fil/crates/kreuzberg-ffi/include/kreuzberg.h

#ifndef KREUZBERG_H
#define KREUZBERG_H

#pragma once

/* This file is auto-generated by alef. DO NOT EDIT. */

#include <stdarg.h>
#include <stdbool.h>
#include <stdint.h>
#include <stdlib.h>
/* Opaque type forward declarations */
/**
 * Hardware acceleration configuration for ONNX Runtime models.
 *
 * Controls which execution provider (CPU, CoreML, CUDA, TensorRT) is used
 * for inference in layout detection and embedding generation.
 * \code
 * use kreuzberg::AccelerationConfig;
 *
 * // Auto-select: CoreML on macOS, CUDA on Linux, CPU elsewhere
 * let config = AccelerationConfig::default();
 *
 * // Force CPU only
 * let config = AccelerationConfig {
 *     provider: kreuzberg::ExecutionProviderType::Cpu,
 *     ..Default::default()
 * };
 * \endcode
 */
typedef struct KREUZBERGAccelerationConfig KREUZBERGAccelerationConfig;
/**
 * Types of inline text annotations.
 */
typedef struct KREUZBERGAnnotationKind KREUZBERGAnnotationKind;
/**
 * A single file extracted from an archive.
 *
 * When archives (ZIP, TAR, 7Z, GZIP) are extracted with recursive extraction
 * enabled, each processable file produces its own full `ExtractionResult`.
 */
typedef struct KREUZBERGArchiveEntry KREUZBERGArchiveEntry;
/**
 * Archive (ZIP/TAR/7Z) metadata.
 *
 * Extracted from compressed archive files containing file lists and size information.
 */
typedef struct KREUZBERGArchiveMetadata KREUZBERGArchiveMetadata;
/**
 * Bounding box in original image coordinates (x1, y1) top-left, (x2, y2) bottom-right.
 */
typedef struct KREUZBERGBBox KREUZBERGBBox;
/**
 * Batch item for byte array extraction.
 *
 * Used with `batch_extract_bytes` and `batch_extract_bytes_sync`
 * to represent a single item in a batch extraction job.
 */
typedef struct KREUZBERGBatchBytesItem KREUZBERGBatchBytesItem;
/**
 * Batch item for file extraction.
 *
 * Used with `batch_extract_files` and `batch_extract_files_sync`
 * to represent a single file in a batch extraction job.
 */
typedef struct KREUZBERGBatchFileItem KREUZBERGBatchFileItem;
/**
 * BibTeX bibliography metadata.
 */
typedef struct KREUZBERGBibtexMetadata KREUZBERGBibtexMetadata;
/**
 * Types of block-level elements in Djot.
 */
typedef struct KREUZBERGBlockType KREUZBERGBlockType;
/**
 * Bounding box coordinates for element positioning.
 */
typedef struct KREUZBERGBoundingBox KREUZBERGBoundingBox;
typedef struct KREUZBERGCacheStats KREUZBERGCacheStats;
/**
 * A single changed cell within a table.
 *
 * Defined here (rather than only in `crate::diff`) so `RevisionDelta` can
 * reference it unconditionally, without requiring the `diff` Cargo feature.
 * `crate::diff` re-exports this type verbatim.
 */
typedef struct KREUZBERGCellChange KREUZBERGCellChange;
/**
 * A text chunk with optional embedding and metadata.
 *
 * Chunks are created when chunking is enabled in `ExtractionConfig`. Each chunk
 * contains the text content, optional embedding vector (if embedding generation
 * is configured), and metadata about its position in the document.
 */
typedef struct KREUZBERGChunk KREUZBERGChunk;
/**
 * Metadata about a chunk's position in the original document.
 */
typedef struct KREUZBERGChunkMetadata KREUZBERGChunkMetadata;
/**
 * How chunk size is measured.
 *
 * Defaults to `Characters` (Unicode character count). When using token-based sizing,
 * chunks are sized by token count according to the specified tokenizer.
 *
 * Token-based sizing uses HuggingFace tokenizers loaded at runtime. Any tokenizer
 * available on HuggingFace Hub can be used, including OpenAI-compatible tokenizers
 * (e.g., `Xenova/gpt-4o`, `Xenova/cl100k_base`).
 */
typedef struct KREUZBERGChunkSizing KREUZBERGChunkSizing;
/**
 * Semantic structural classification of a text chunk.
 *
 * Assigned by the heuristic classifier in `chunking::classifier`.
 * Defaults to `Unknown` when no rule matches.
 * Designed to be extended in future versions without breaking changes.
 */
typedef struct KREUZBERGChunkType KREUZBERGChunkType;
/**
 * Type of text chunker to use.
 *
 * # Variants
 *
 * * `Text` - Generic text splitter, splits on whitespace and punctuation
 * * `Markdown` - Markdown-aware splitter, preserves formatting and structure
 * * `Yaml` - YAML-aware splitter, creates one chunk per top-level key
 * * `Semantic` - Topic-aware chunker. With an `EmbeddingConfig`, splits at
 *   embedding-based topic shifts tuned by `topic_threshold` (default 0.75,
 *   lower = more splits). Without an embedding, falls back to a
 *   structural-boundary heuristic (ALL-CAPS headers, numbered sections,
 *   blank-line paragraphs) and merges groups into chunks capped at
 *   `max_characters` (default 1000). `topic_threshold` has no effect in the
 *   fallback path. For best results, pair with an embedding model.
 */
typedef struct KREUZBERGChunkerType KREUZBERGChunkerType;
/**
 * Chunking configuration.
 *
 * Configures text chunking for document content, including chunk size,
 * overlap, trimming behavior, and optional embeddings.
 *
 * Use `..Default::default()` when constructing to allow for future field additions:
 * ```rust
 * let config = ChunkingConfig {
 *     max_characters: 500,
 *     ..Default::default()
 * };
 * ```
 */
typedef struct KREUZBERGChunkingConfig KREUZBERGChunkingConfig;
/**
 * Citation file metadata (RIS, PubMed, EndNote).
 */
typedef struct KREUZBERGCitationMetadata KREUZBERGCitationMetadata;
/**
 * Content rendering mode for code extraction.
 *
 * Controls how extracted code content is represented in the `content` field
 * of `ExtractionResult`.
 */
typedef struct KREUZBERGCodeContentMode KREUZBERGCodeContentMode;
/**
 * Cross-extractor content filtering configuration.
 *
 * Controls whether "furniture" content (headers, footers, page numbers,
 * watermarks, repeating text) is included in or stripped from extraction
 * results. Applies across all extractors (PDF, DOCX, RTF, ODT, HTML, etc.)
 * with format-specific implementation.
 *
 * When `None` on `ExtractionConfig`, each extractor uses its current
 * default behavior unchanged.
 */
typedef struct KREUZBERGContentFilterConfig KREUZBERGContentFilterConfig;
/**
 * Content layer classification for document nodes.
 *
 * Replaces separate body/furniture arrays with per-node granularity.
 */
typedef struct KREUZBERGContentLayer KREUZBERGContentLayer;
/**
 * JATS contributor with role.
 */
typedef struct KREUZBERGContributorRole KREUZBERGContributorRole;
/**
 * Dublin Core metadata from docProps/core.xml
 *
 * Contains standard metadata fields defined by the Dublin Core standard
 * and Office-specific extensions.
 */
typedef struct KREUZBERGCoreProperties KREUZBERGCoreProperties;
/**
 * CSV/TSV file metadata.
 */
typedef struct KREUZBERGCsvMetadata KREUZBERGCsvMetadata;
/**
 * dBASE field information.
 */
typedef struct KREUZBERGDbfFieldInfo KREUZBERGDbfFieldInfo;
/**
 * dBASE (DBF) file metadata.
 */
typedef struct KREUZBERGDbfMetadata KREUZBERGDbfMetadata;
/**
 * MIME type detection response.
 */
typedef struct KREUZBERGDetectResponse KREUZBERGDetectResponse;
/**
 * Page-level detection result containing all detections and page metadata.
 */
typedef struct KREUZBERGDetectionResult KREUZBERGDetectionResult;
/**
 * A single contiguous hunk in a unified diff.
 */
typedef struct KREUZBERGDiffHunk KREUZBERGDiffHunk;
/**
 * A single line in a unified-diff hunk.
 *
 * Defined here (rather than only in `crate::diff`) so `RevisionDelta` can
 * reference it unconditionally, without requiring the `diff` Cargo feature.
 * `crate::diff` re-exports this type verbatim.
 */
typedef struct KREUZBERGDiffLine KREUZBERGDiffLine;
/**
 * Options controlling how two `ExtractionResult` values are compared.
 */
typedef struct KREUZBERGDiffOptions KREUZBERGDiffOptions;
/**
 * Comprehensive Djot document structure with semantic preservation.
 *
 * This type captures the full richness of Djot markup, including:
 * - Block-level structures (headings, lists, blockquotes, code blocks, etc.)
 * - Inline formatting (emphasis, strong, highlight, subscript, superscript, etc.)
 * - Attributes (classes, IDs, key-value pairs)
 * - Links, images, footnotes
 * - Math expressions (inline and display)
 * - Tables with full structure
 *
 * Available when the `djot` feature is enabled.
 */
typedef struct KREUZBERGDjotContent KREUZBERGDjotContent;
/**
 * Image element in Djot.
 */
typedef struct KREUZBERGDjotImage KREUZBERGDjotImage;
/**
 * Link element in Djot.
 */
typedef struct KREUZBERGDjotLink KREUZBERGDjotLink;
/**
 * Trait for document extractor plugins.
 *
 * Implement this trait to add support for new document formats or to override
 * built-in extraction behavior with custom logic.
 *
 * # Return Type
 *
 * Extractors return `InternalDocument`, a flat intermediate representation.
 * The pipeline converts this into the public `ExtractionResult` via the
 * derivation step.
 *
 * # Priority System
 *
 * When multiple extractors support the same MIME type, the registry selects
 * the extractor with the highest priority value. Use this to:
 * - Override built-in extractors (priority > 50)
 * - Provide fallback extractors (priority < 50)
 * - Implement specialized extractors for specific use cases
 *
 * Default priority is 50.
 *
 * # Thread Safety
 *
 * Extractors must be thread-safe (`Send + Sync`) to support concurrent extraction.
 * \code
 * use kreuzberg::plugins::{Plugin, DocumentExtractor};
 * use kreuzberg::{Result, ExtractionConfig};
 * use kreuzberg::types::internal::InternalDocument;
 * use async_trait::async_trait;
 * use std::path::Path;
 *
 * /// Custom PDF extractor with premium features
 * struct PremiumPdfExtractor;
 *
 * impl Plugin for PremiumPdfExtractor {
 *     fn name(&self) -> &str { "premium-pdf" }
 *     fn version(&self) -> String { "2.0.0".to_string() }
 *     fn initialize(&self) -> Result<()> { Ok(()) }
 *     fn shutdown(&self) -> Result<()> { Ok(()) }
 * }
 *
 * #[async_trait]
 * impl DocumentExtractor for PremiumPdfExtractor {
 *     async fn extract_bytes(&self, content: &[u8], mime_type: &str, config: &ExtractionConfig)
 *         -> Result<InternalDocument> {
 *         // Premium extraction logic with better accuracy
 *         let mut doc = InternalDocument::new("pdf");
 *         // ... populate doc.elements, doc.metadata, etc.
 *         Ok(doc)
 *     }
 *
 *     fn supported_mime_types(&self) -> &[&str] {
 *         &["application/pdf"]
 *     }
 *
 *     fn priority(&self) -> i32 {
 *         100  // Higher than default (50) - will be preferred
 *     }
 * }
 * \endcode
 */
typedef struct KREUZBERGDocumentExtractor KREUZBERGDocumentExtractor;
/**
 * A single node in the document tree.
 *
 * Each node has deterministic `id`, typed `content`, optional `parent`/`children`
 * for tree structure, and metadata like page number, bounding box, and content layer.
 */
typedef struct KREUZBERGDocumentNode KREUZBERGDocumentNode;
/**
 * A resolved relationship between two nodes in the document tree.
 */
typedef struct KREUZBERGDocumentRelationship KREUZBERGDocumentRelationship;
/**
 * A single tracked change embedded in a document.
 *
 * Populated by per-format extractors that understand change-tracking metadata
 * (DOCX `w:ins`/`w:del`/`w:rPrChange`, ODT `text:change-*`, …). Every
 * extractor defaults to `ExtractionResult.revisions = None` until a
 * format-specific implementation is added.
 */
typedef struct KREUZBERGDocumentRevision KREUZBERGDocumentRevision;
/**
 * Top-level structured document representation.
 *
 * A flat array of nodes with index-based parent/child references forming a tree.
 * Root-level nodes have `parent: None`. Use `body_roots()` and `furniture_roots()`
 * to iterate over top-level content by layer.
 *
 * # Validation
 *
 * Call `validate()` after construction to verify all node indices are in bounds
 * and parent-child relationships are bidirectionally consistent.
 */
typedef struct KREUZBERGDocumentStructure KREUZBERGDocumentStructure;
/**
 * Application properties from docProps/app.xml for DOCX
 *
 * Contains Word-specific document statistics and metadata.
 */
typedef struct KREUZBERGDocxAppProperties KREUZBERGDocxAppProperties;
/**
 * Word document metadata.
 *
 * Extracted from DOCX files using shared Office Open XML metadata extraction.
 * Integrates with `office_metadata` module for core/app/custom properties.
 */
typedef struct KREUZBERGDocxMetadata KREUZBERGDocxMetadata;
/**
 * Semantic element extracted from document.
 *
 * Represents a logical unit of content with semantic classification,
 * unique identifier, and metadata for tracking origin and position.
 */
typedef struct KREUZBERGElement KREUZBERGElement;
/**
 * Metadata for a semantic element.
 */
typedef struct KREUZBERGElementMetadata KREUZBERGElementMetadata;
/**
 * Semantic element type classification.
 *
 * Categorizes text content into semantic units for downstream processing.
 * Supports the element types commonly found in Unstructured documents.
 */
typedef struct KREUZBERGElementType KREUZBERGElementType;
/**
 * Email attachment representation.
 *
 * Contains metadata and optionally the content of an email attachment.
 */
typedef struct KREUZBERGEmailAttachment KREUZBERGEmailAttachment;
/**
 * Configuration for email extraction.
 */
typedef struct KREUZBERGEmailConfig KREUZBERGEmailConfig;
/**
 * Email extraction result.
 *
 * Complete representation of an extracted email message (.eml or .msg)
 * including headers, body content, and attachments.
 */
typedef struct KREUZBERGEmailExtractionResult KREUZBERGEmailExtractionResult;
/**
 * Email metadata extracted from .eml and .msg files.
 *
 * Includes sender/recipient information, message ID, and attachment list.
 */
typedef struct KREUZBERGEmailMetadata KREUZBERGEmailMetadata;
/**
 * Changes to embedded archive children between two results.
 */
typedef struct KREUZBERGEmbeddedChanges KREUZBERGEmbeddedChanges;
/**
 * Diff for a single embedded archive entry that appears in both results.
 */
typedef struct KREUZBERGEmbeddedDiff KREUZBERGEmbeddedDiff;
/**
 * Embedded file descriptor extracted from the PDF name tree.
 */
typedef struct KREUZBERGEmbeddedFile KREUZBERGEmbeddedFile;
/**
 * Trait for in-process embedding backend plugins.
 *
 * Async to match the convention used by `OcrBackend`,
 * `DocumentExtractor`, and `PostProcessor`.
 * Host-language bridges (PyO3, napi-rs, Rustler, extendr, magnus, ext-php-rs,
 * C FFI, etc.) wrap their synchronous host callables in `spawn_blocking` or the
 * equivalent to satisfy the async signature.
 *
 * # Thread safety
 *
 * Backends must be `Send + Sync + 'static`. They are stored in
 * `Arc<dyn EmbeddingBackend>` and called concurrently from kreuzberg's chunking
 * pipeline. If the backend's underlying model isn't thread-safe, the backend
 * itself must serialize access internally (e.g. via `Mutex<Inner>`).
 *
 * # Contract
 *
 * - `embed(texts)` MUST return exactly `texts.len()` vectors, each of length
 *   `self.dimensions()`. The dispatcher in `embed_texts`
 *   validates this before returning to downstream consumers; a non-conforming
 *   backend surfaces as a `KreuzbergError::Validation`, not a panic.
 * - `embed` may be called from any thread. Its future must be `Send`
 *   (enforced by `async_trait` when `#[async_trait]` is used on non-WASM targets).
 * - `dimensions()` is called exactly once at registration, immediately after
 *   `initialize()` succeeds. The returned value is cached by the registry and
 *   used for all subsequent shape validation. Lazy-loading implementations can
 *   defer model loading into `initialize()` and report the real dimension
 *   afterwards. Later mutations of the backend's reported dimension are not
 *   observed by kreuzberg — implementations that need to change dimension
 *   must unregister and re-register.
 * - `shutdown()` (inherited from `Plugin`) may be invoked
 *   concurrently with an in-flight `embed()` call. Implementations must
 *   tolerate this — e.g. by letting in-flight calls finish using resources
 *   held via the `Arc<dyn EmbeddingBackend>` reference, and only releasing
 *   shared state that isn't needed by `embed`.
 *
 * # Runtime
 *
 * The synchronous `embed_texts` entry uses
 * [`tokio::task::block_in_place`] to await the trait's async `embed`, which
 * requires a multi-thread tokio runtime. Callers running inside a
 * `current_thread` runtime (e.g. `#[tokio::test]` without `flavor = "multi_thread"`,
 * or `tokio::runtime::Builder::new_current_thread()`) must use
 * `embed_texts_async` instead, which awaits directly without
 * `block_in_place`.
 */
typedef struct KREUZBERGEmbeddingBackend KREUZBERGEmbeddingBackend;
/**
 * Embedding configuration for text chunks.
 *
 * Configures embedding generation using ONNX models via the vendored embedding engine.
 * Requires the `embeddings` feature to be enabled.
 */
typedef struct KREUZBERGEmbeddingConfig KREUZBERGEmbeddingConfig;
/**
 * Embedding model types supported by Kreuzberg.
 */
typedef struct KREUZBERGEmbeddingModelType KREUZBERGEmbeddingModelType;
/**
 * Preset configurations for common RAG use cases.
 *
 * Each preset combines chunk size, overlap, and embedding model
 * to provide an optimized configuration for specific scenarios.
 *
 * All string fields are owned `String` for FFI compatibility — instances
 * are safe to clone and pass across language boundaries.
 */
typedef struct KREUZBERGEmbeddingPreset KREUZBERGEmbeddingPreset;
/**
 * EPUB metadata (Dublin Core extensions).
 */
typedef struct KREUZBERGEpubMetadata KREUZBERGEpubMetadata;
/**
 * Error metadata (for batch operations).
 */
typedef struct KREUZBERGErrorMetadata KREUZBERGErrorMetadata;
/**
 * Excel/spreadsheet format metadata.
 *
 * Identifies the document as a spreadsheet source via the `FormatMetadata::Excel`
 * discriminant. Sheet count and sheet names are stored inside this struct.
 */
typedef struct KREUZBERGExcelMetadata KREUZBERGExcelMetadata;
/**
 * Single Excel worksheet.
 *
 * Represents one sheet from an Excel workbook with its content
 * converted to Markdown format and dimensional statistics.
 */
typedef struct KREUZBERGExcelSheet KREUZBERGExcelSheet;
/**
 * Excel workbook representation.
 *
 * Contains all sheets from an Excel file (.xlsx, .xls, etc.) with
 * extracted content and metadata.
 */
typedef struct KREUZBERGExcelWorkbook KREUZBERGExcelWorkbook;
/**
 * ONNX Runtime execution provider type.
 *
 * Determines which hardware backend is used for model inference.
 * `Auto` (default) selects the best available provider per platform.
 */
typedef struct KREUZBERGExecutionProviderType KREUZBERGExecutionProviderType;
/**
 * Extracted image from a document.
 *
 * Contains raw image data, metadata, and optional nested OCR results.
 * Raw bytes allow cross-language compatibility - users can convert to
 * PIL.Image (Python), Sharp (Node.js), or other formats as needed.
 */
typedef struct KREUZBERGExtractedImage KREUZBERGExtractedImage;
/**
 * A URI extracted from a document.
 *
 * Represents any link, reference, or resource pointer found during extraction.
 * The `kind` field classifies the URI semantically, while `label` carries
 * optional human-readable display text.
 */
typedef struct KREUZBERGExtractedUri KREUZBERGExtractedUri;
/**
 * Main extraction configuration.
 *
 * This struct contains all configuration options for the extraction process.
 * It can be loaded from TOML, YAML, or JSON files, or created programmatically.
 * \code
 * use kreuzberg::core::config::ExtractionConfig;
 *
 * // Create with defaults
 * let config = ExtractionConfig::default();
 *
 * // Load from TOML file
 * // let config = ExtractionConfig::from_toml_file("kreuzberg.toml")?;
 * \endcode
 */
typedef struct KREUZBERGExtractionConfig KREUZBERGExtractionConfig;
/**
 * The complete diff between two `ExtractionResult` values.
 */
typedef struct KREUZBERGExtractionDiff KREUZBERGExtractionDiff;
/**
 * How the extracted text was produced.
 */
typedef struct KREUZBERGExtractionMethod KREUZBERGExtractionMethod;
/**
 * General extraction result used by the core extraction API.
 *
 * This is the main result type returned by all extraction functions.
 */
typedef struct KREUZBERGExtractionResult KREUZBERGExtractionResult;
/**
 * FictionBook (FB2) metadata.
 */
typedef struct KREUZBERGFictionBookMetadata KREUZBERGFictionBookMetadata;
/**
 * Per-file extraction configuration overrides for batch processing.
 *
 * All fields are `Option<T>` — `None` means "use the batch-level default."
 * This type is used with `batch_extract_files` and
 * `batch_extract_bytes` to allow heterogeneous
 * extraction settings within a single batch.
 *
 * # Excluded Fields
 *
 * The following `ExtractionConfig` fields are batch-level only and
 * cannot be overridden per file:
 * - `max_concurrent_extractions` — controls batch parallelism
 * - `use_cache` — global caching policy
 * - `acceleration` — shared ONNX execution provider
 * - `security_limits` — global archive security policy
 * \code
 * use kreuzberg::FileExtractionConfig;
 *
 * // Override just OCR forcing for a specific file
 * let config = FileExtractionConfig {
 *     force_ocr: Some(true),
 *     ..Default::default()
 * };
 * \endcode
 */
typedef struct KREUZBERGFileExtractionConfig KREUZBERGFileExtractionConfig;
/**
 * Footnote in Djot.
 */
typedef struct KREUZBERGFootnote KREUZBERGFootnote;
/**
 * Format-specific metadata (discriminated union).
 *
 * Only one format type can exist per extraction result. This provides
 * type-safe, clean metadata without nested optionals.
 */
typedef struct KREUZBERGFormatMetadata KREUZBERGFormatMetadata;
/**
 * Block-level element in a Djot document.
 *
 * Represents structural elements like headings, paragraphs, lists, code blocks, etc.
 */
typedef struct KREUZBERGFormattedBlock KREUZBERGFormattedBlock;
/**
 * Individual grid cell with position and span metadata.
 */
typedef struct KREUZBERGGridCell KREUZBERGGridCell;
/**
 * Header/heading element metadata.
 */
typedef struct KREUZBERGHeaderMetadata KREUZBERGHeaderMetadata;
/**
 * Heading context for a chunk within a Markdown document.
 *
 * Contains the heading hierarchy from document root to this chunk's section.
 */
typedef struct KREUZBERGHeadingContext KREUZBERGHeadingContext;
/**
 * A single heading in the hierarchy.
 */
typedef struct KREUZBERGHeadingLevel KREUZBERGHeadingLevel;
/**
 * A text block with hierarchy level assignment.
 *
 * Represents a block of text with semantic heading information extracted from
 * font size clustering and hierarchical analysis.
 */
typedef struct KREUZBERGHierarchicalBlock KREUZBERGHierarchicalBlock;
/**
 * Hierarchy extraction configuration for PDF text structure analysis.
 *
 * Enables extraction of document hierarchy levels (H1-H6) based on font size
 * clustering and semantic analysis. When enabled, hierarchical blocks are
 * included in page content.
 */
typedef struct KREUZBERGHierarchyConfig KREUZBERGHierarchyConfig;
/**
 * HTML metadata extracted from HTML documents.
 *
 * Includes document-level metadata, Open Graph data, Twitter Card metadata,
 * and extracted structural elements (headers, links, images, structured data).
 */
typedef struct KREUZBERGHtmlMetadata KREUZBERGHtmlMetadata;
/**
 * Configuration for styled HTML output.
 *
 * When set on [`ExtractionConfig::html_output`] alongside
 * `output_format = OutputFormat::Html`, the pipeline builds a
 * `StyledHtmlRenderer` (crate::rendering::StyledHtmlRenderer) instead of
 * the plain comrak-based renderer.
 * \code
 * use kreuzberg::core::config::{HtmlOutputConfig, HtmlTheme};
 *
 * let config = HtmlOutputConfig {
 *     theme: HtmlTheme::GitHub,
 *     css: Some(".kb-p { font-size: 1.1rem; }".to_string()),
 *     ..Default::default()
 * };
 * \endcode
 */
typedef struct KREUZBERGHtmlOutputConfig KREUZBERGHtmlOutputConfig;
/**
 * Built-in HTML theme selection.
 */
typedef struct KREUZBERGHtmlTheme KREUZBERGHtmlTheme;
/**
 * Image extraction configuration.
 */
typedef struct KREUZBERGImageExtractionConfig KREUZBERGImageExtractionConfig;
/**
 * Heuristic classification of what an image likely depicts.
 */
typedef struct KREUZBERGImageKind KREUZBERGImageKind;
/**
 * Image metadata extracted from image files.
 *
 * Includes dimensions, format, and EXIF data.
 */
typedef struct KREUZBERGImageMetadata KREUZBERGImageMetadata;
/**
 * Image element metadata.
 */
typedef struct KREUZBERGImageMetadataType KREUZBERGImageMetadataType;
/**
 * Image preprocessing configuration for OCR.
 *
 * These settings control how images are preprocessed before OCR to improve
 * text recognition quality. Different preprocessing strategies work better
 * for different document types.
 */
typedef struct KREUZBERGImagePreprocessingConfig KREUZBERGImagePreprocessingConfig;
/**
 * Image preprocessing metadata.
 *
 * Tracks the transformations applied to an image during OCR preprocessing,
 * including DPI normalization, resizing, and resampling.
 */
typedef struct KREUZBERGImagePreprocessingMetadata KREUZBERGImagePreprocessingMetadata;
/**
 * Image type classification.
 */
typedef struct KREUZBERGImageType KREUZBERGImageType;
/**
 * Inline element within a block.
 *
 * Represents text with formatting, links, images, etc.
 */
typedef struct KREUZBERGInlineElement KREUZBERGInlineElement;
/**
 * Types of inline elements in Djot.
 */
typedef struct KREUZBERGInlineType KREUZBERGInlineType;
/**
 * JATS (Journal Article Tag Suite) metadata.
 */
typedef struct KREUZBERGJatsMetadata KREUZBERGJatsMetadata;
/**
 * Extracted keyword with metadata.
 */
typedef struct KREUZBERGKeyword KREUZBERGKeyword;
/**
 * Keyword algorithm selection.
 */
typedef struct KREUZBERGKeywordAlgorithm KREUZBERGKeywordAlgorithm;
/**
 * Keyword extraction configuration.
 */
typedef struct KREUZBERGKeywordConfig KREUZBERGKeywordConfig;
/**
 * Language detection configuration.
 */
typedef struct KREUZBERGLanguageDetectionConfig KREUZBERGLanguageDetectionConfig;
/**
 * The 17 canonical document layout classes.
 *
 * All model backends (RT-DETR, YOLO, etc.) map their native class IDs
 * to this shared set. Models with fewer classes (DocLayNet: 11, PubLayNet: 5)
 * map to the closest equivalent.
 *
 * Wire format is snake_case in all serializers (JSON, TOML, YAML).
 */
typedef struct KREUZBERGLayoutClass KREUZBERGLayoutClass;
/**
 * A single layout detection result.
 */
typedef struct KREUZBERGLayoutDetection KREUZBERGLayoutDetection;
/**
 * Layout detection configuration.
 *
 * Controls layout detection behavior in the extraction pipeline.
 * When set on `ExtractionConfig` (super::ExtractionConfig), layout detection
 * is enabled for PDF extraction.
 */
typedef struct KREUZBERGLayoutDetectionConfig KREUZBERGLayoutDetectionConfig;
/**
 * A detected layout region on a page.
 *
 * When layout detection is enabled, each page may have layout regions
 * identifying different content types (text, pictures, tables, etc.)
 * with confidence scores and spatial positions.
 */
typedef struct KREUZBERGLayoutRegion KREUZBERGLayoutRegion;
/**
 * Link element metadata.
 */
typedef struct KREUZBERGLinkMetadata KREUZBERGLinkMetadata;
/**
 * Link type classification.
 */
typedef struct KREUZBERGLinkType KREUZBERGLinkType;
/**
 * Type of list detection.
 */
typedef struct KREUZBERGListType KREUZBERGListType;
/**
 * Configuration for an LLM provider/model via liter-llm.
 *
 * Each feature (VLM OCR, VLM embeddings, structured extraction) carries
 * its own `LlmConfig`, allowing different providers per feature.
 * \code
 * [structured_extraction.llm]
 * model = "openai/gpt-4o"
 * api_key = "sk-..."  # or use KREUZBERG_LLM_API_KEY env var
 * \endcode
 */
typedef struct KREUZBERGLlmConfig KREUZBERGLlmConfig;
/**
 * Token usage and cost data for a single LLM call made during extraction.
 *
 * Populated when VLM OCR, structured extraction, or LLM-based embeddings
 * are used. Multiple entries may be present when multiple LLM calls occur
 * within one extraction (e.g. VLM OCR + structured extraction).
 */
typedef struct KREUZBERGLlmUsage KREUZBERGLlmUsage;
/**
 * Extraction result metadata.
 *
 * Contains common fields applicable to all formats, format-specific metadata
 * via a discriminated union, and additional custom fields from postprocessors.
 */
typedef struct KREUZBERGMetadata KREUZBERGMetadata;
/**
 * Combined paths to all models needed for OCR (backward compatibility).
 */
typedef struct KREUZBERGModelPaths KREUZBERGModelPaths;
/**
 * Tagged enum for node content. Each variant carries only type-specific data.
 *
 * Uses `#[serde(tag = "node_type")]` to avoid "type" keyword collision in
 * Go/Java/TypeScript bindings.
 */
typedef struct KREUZBERGNodeContent KREUZBERGNodeContent;
/**
 * Trait for OCR backend plugins.
 *
 * Implement this trait to add custom OCR capabilities. OCR backends can be:
 * - Native Rust implementations (like Tesseract)
 * - FFI bridges to Python libraries (like EasyOCR, PaddleOCR)
 * - Cloud-based OCR services (Google Vision, AWS Textract, etc.)
 *
 * # Thread Safety
 *
 * OCR backends must be thread-safe (`Send + Sync`) to support concurrent processing.
 * \code
 * use kreuzberg::plugins::{Plugin, OcrBackend, OcrBackendType};
 * use kreuzberg::{Result, OcrConfig};
 * use async_trait::async_trait;
 * use std::borrow::Cow;
 * use std::path::Path;
 * use kreuzberg::types::{ExtractionResult, Metadata};
 *
 * struct CustomOcrBackend;
 *
 * impl Plugin for CustomOcrBackend {
 *     fn name(&self) -> &str { "custom-ocr" }
 *     fn version(&self) -> String { "1.0.0".to_string() }
 *     fn initialize(&self) -> Result<()> { Ok(()) }
 *     fn shutdown(&self) -> Result<()> { Ok(()) }
 * }
 *
 * #[async_trait]
 * impl OcrBackend for CustomOcrBackend {
 *     async fn process_image(&self, image_bytes: &[u8], config: &OcrConfig) -> Result<ExtractionResult> {
 *         // Implement OCR logic here
 *         Ok(ExtractionResult {
 *             content: "Extracted text".to_string(),
 *             mime_type: Cow::Borrowed("text/plain"),
 *             ..Default::default()
 *         })
 *     }
 *
 *     async fn process_image_file(&self, path: &Path, config: &OcrConfig) -> Result<ExtractionResult> {
 *         let bytes = std::fs::read(path)?;
 *         self.process_image(&bytes, config).await
 *     }
 *
 *     fn supports_language(&self, lang: &str) -> bool {
 *         matches!(lang, "eng" | "deu" | "fra")
 *     }
 *
 *     fn backend_type(&self) -> OcrBackendType {
 *         OcrBackendType::Custom
 *     }
 * }
 * \endcode
 */
typedef struct KREUZBERGOcrBackend KREUZBERGOcrBackend;
/**
 * OCR backend types.
 */
typedef struct KREUZBERGOcrBackendType KREUZBERGOcrBackendType;
/**
 * Bounding geometry for an OCR element.
 *
 * Supports both axis-aligned rectangles (from Tesseract) and 4-point quadrilaterals
 * (from PaddleOCR and rotated text detection).
 */
typedef struct KREUZBERGOcrBoundingGeometry KREUZBERGOcrBoundingGeometry;
/**
 * Confidence scores for an OCR element.
 *
 * Separates detection confidence (how confident that text exists at this location)
 * from recognition confidence (how confident about the actual text content).
 */
typedef struct KREUZBERGOcrConfidence KREUZBERGOcrConfidence;
/**
 * OCR configuration.
 */
typedef struct KREUZBERGOcrConfig KREUZBERGOcrConfig;
/**
 * A unified OCR element representing detected text with full metadata.
 *
 * This is the primary type for structured OCR output, preserving all information
 * from both Tesseract and PaddleOCR backends.
 */
typedef struct KREUZBERGOcrElement KREUZBERGOcrElement;
/**
 * Configuration for OCR element extraction.
 *
 * Controls how OCR elements are extracted and filtered.
 */
typedef struct KREUZBERGOcrElementConfig KREUZBERGOcrElementConfig;
/**
 * Hierarchical level of an OCR element.
 *
 * Maps to Tesseract's page segmentation hierarchy and provides
 * equivalent semantics for PaddleOCR.
 */
typedef struct KREUZBERGOcrElementLevel KREUZBERGOcrElementLevel;
/**
 * OCR extraction result.
 *
 * Result of performing OCR on an image or scanned document,
 * including recognized text and detected tables.
 */
typedef struct KREUZBERGOcrExtractionResult KREUZBERGOcrExtractionResult;
/**
 * OCR processing metadata.
 *
 * Captures information about OCR processing configuration and results.
 */
typedef struct KREUZBERGOcrMetadata KREUZBERGOcrMetadata;
/**
 * Multi-backend OCR pipeline with quality-based fallback.
 *
 * Backends are tried in priority order (highest first). After each backend
 * produces output, quality is evaluated. If it meets `quality_thresholds.pipeline_min_quality`,
 * the result is accepted. Otherwise the next backend is tried.
 */
typedef struct KREUZBERGOcrPipelineConfig KREUZBERGOcrPipelineConfig;
/**
 * A single backend stage in the OCR pipeline.
 */
typedef struct KREUZBERGOcrPipelineStage KREUZBERGOcrPipelineStage;
/**
 * Quality thresholds for OCR fallback decisions and pipeline quality gating.
 *
 * All fields default to the values that match the previous hardcoded behavior,
 * so `OcrQualityThresholds::default()` preserves existing semantics exactly.
 */
typedef struct KREUZBERGOcrQualityThresholds KREUZBERGOcrQualityThresholds;
/**
 * Rotation information for an OCR element.
 */
typedef struct KREUZBERGOcrRotation KREUZBERGOcrRotation;
/**
 * Table detected via OCR.
 *
 * Represents a table structure recognized during OCR processing.
 */
typedef struct KREUZBERGOcrTable KREUZBERGOcrTable;
/**
 * Bounding box for an OCR-detected table in pixel coordinates.
 */
typedef struct KREUZBERGOcrTableBoundingBox KREUZBERGOcrTableBoundingBox;
/**
 * Document orientation detection result.
 */
typedef struct KREUZBERGOrientationResult KREUZBERGOrientationResult;
/**
 * Output format for extraction results.
 *
 * Controls the format of the `content` field in `ExtractionResult`.
 * When set to `Markdown`, `Djot`, or `Html`, the output uses that format.
 * `Plain` returns the raw extracted text.
 * `Structured` returns JSON with full OCR element data including bounding
 * boxes and confidence scores.
 */
typedef struct KREUZBERGOutputFormat KREUZBERGOutputFormat;
/**
 * Page Segmentation Mode for Tesseract OCR
 */
typedef struct KREUZBERGPSMMode KREUZBERGPSMMode;
/**
 * Supported languages in PaddleOCR.
 *
 * Maps user-friendly language codes to paddle-ocr-rs language identifiers.
 */
typedef struct KREUZBERGPaddleLanguage KREUZBERGPaddleLanguage;
/**
 * Configuration for PaddleOCR backend.
 *
 * Configures PaddleOCR text detection and recognition with multi-language support.
 * Uses a builder pattern for convenient configuration.
 * \code
 * use kreuzberg::PaddleOcrConfig;
 *
 * // Create with default English configuration
 * let config = PaddleOcrConfig::new("en");
 *
 * // Create with custom cache directory
 * let config = PaddleOcrConfig::new("ch")
 *     .with_cache_dir("/path/to/cache".into());
 *
 * // Enable table detection
 * let config = PaddleOcrConfig::new("en")
 *     .with_table_detection(true);
 * \endcode
 */
typedef struct KREUZBERGPaddleOcrConfig KREUZBERGPaddleOcrConfig;
/**
 * Byte offset boundary for a page.
 *
 * Tracks where a specific page's content starts and ends in the main content string,
 * enabling mapping from byte positions to page numbers. Offsets are guaranteed to be
 * at valid UTF-8 character boundaries when using standard String methods (push_str, push, etc.).
 */
typedef struct KREUZBERGPageBoundary KREUZBERGPageBoundary;
/**
 * Page extraction and tracking configuration.
 *
 * Controls how pages are extracted, tracked, and represented in the extraction results.
 * When `None`, page tracking is disabled.
 *
 * Page range tracking in chunk metadata (first_page/last_page) is automatically enabled
 * when page boundaries are available and chunking is configured.
 */
typedef struct KREUZBERGPageConfig KREUZBERGPageConfig;
/**
 * Content for a single page/slide.
 *
 * When page extraction is enabled, documents are split into per-page content
 * with associated tables and images mapped to each page.
 *
 * # Performance
 *
 * Uses Arc-wrapped tables and images for memory efficiency:
 * - `Vec<Arc<Table>>` enables zero-copy sharing of table data
 * - `Vec<Arc<ExtractedImage>>` enables zero-copy sharing of image data
 * - Maintains exact JSON compatibility via custom Serialize/Deserialize
 *
 * This reduces memory overhead for documents with shared tables/images
 * by avoiding redundant copies during serialization.
 */
typedef struct KREUZBERGPageContent KREUZBERGPageContent;
/**
 * Page hierarchy structure containing heading levels and block information.
 *
 * Used when PDF text hierarchy extraction is enabled. Contains hierarchical
 * blocks with heading levels (H1-H6) for semantic document structure.
 */
typedef struct KREUZBERGPageHierarchy KREUZBERGPageHierarchy;
/**
 * Metadata for individual page/slide/sheet.
 *
 * Captures per-page information including dimensions, content counts,
 * and visibility state (for presentations).
 */
typedef struct KREUZBERGPageInfo KREUZBERGPageInfo;
/**
 * Unified page structure for documents.
 *
 * Supports different page types (PDF pages, PPTX slides, Excel sheets)
 * with character offset boundaries for chunk-to-page mapping.
 */
typedef struct KREUZBERGPageStructure KREUZBERGPageStructure;
/**
 * Type of paginated unit in a document.
 *
 * Distinguishes between different types of "pages" (PDF pages, presentation slides, spreadsheet
 * sheets).
 */
typedef struct KREUZBERGPageUnitType KREUZBERGPageUnitType;
/**
 * A PDF annotation extracted from a document page.
 */
typedef struct KREUZBERGPdfAnnotation KREUZBERGPdfAnnotation;
/**
 * Type of PDF annotation.
 */
typedef struct KREUZBERGPdfAnnotationType KREUZBERGPdfAnnotationType;
/**
 * PDF-specific configuration.
 */
typedef struct KREUZBERGPdfConfig KREUZBERGPdfConfig;
/**
 * PDF-specific metadata.
 *
 * Contains metadata fields specific to PDF documents that are not in the common
 * `Metadata` structure. Common fields like title, authors, keywords, and dates
 * are at the `Metadata` level.
 */
typedef struct KREUZBERGPdfMetadata KREUZBERGPdfMetadata;
/**
 * Base trait that all plugins must implement.
 *
 * This trait provides common functionality for plugin lifecycle management,
 * identification, and metadata.
 *
 * # Thread Safety
 *
 * All plugins must be `Send + Sync` to support concurrent usage across threads.
 * \code
 * use kreuzberg::plugins::Plugin;
 * use kreuzberg::Result;
 * use std::sync::atomic::{AtomicBool, Ordering};
 *
 * struct MyPlugin {
 *     initialized: AtomicBool,
 * }
 *
 * impl Plugin for MyPlugin {
 *     fn name(&self) -> &str {
 *         "my-plugin"
 *     }
 *
 *     fn version(&self) -> String {
 *         "1.0.0".to_string()
 *     }
 *
 *     fn initialize(&self) -> Result<()> {
 *         self.initialized.store(true, Ordering::Release);
 *         println!("Plugin initialized!");
 *         Ok(())
 *     }
 *
 *     fn shutdown(&self) -> Result<()> {
 *         self.initialized.store(false, Ordering::Release);
 *         println!("Plugin shutdown!");
 *         Ok(())
 *     }
 * }
 * \endcode
 */
typedef struct KREUZBERGPlugin KREUZBERGPlugin;
/**
 * Trait for post-processor plugins.
 *
 * Post-processors transform or enrich extraction results after the initial
 * extraction is complete. They can:
 * - Clean and normalize text
 * - Add metadata (language, keywords, entities)
 * - Split content into chunks
 * - Score quality
 * - Apply custom transformations
 *
 * # Processing Order
 *
 * Post-processors are executed in stage order:
 * 1. **Early** - Language detection, entity extraction
 * 2. **Middle** - Keyword extraction, token reduction
 * 3. **Late** - Custom hooks, final validation
 *
 * Within each stage, processors are executed in registration order.
 *
 * # Error Handling
 *
 * Post-processor errors are non-fatal by default - they're captured in metadata
 * and execution continues. To make errors fatal, return an error from `process()`.
 *
 * # Thread Safety
 *
 * Post-processors must be thread-safe (`Send + Sync`).
 * \code
 * use kreuzberg::plugins::{Plugin, PostProcessor, ProcessingStage};
 * use kreuzberg::{Result, ExtractionResult, ExtractionConfig};
 * use async_trait::async_trait;
 *
 * /// Add word count metadata to extraction results
 * struct WordCountProcessor;
 *
 * impl Plugin for WordCountProcessor {
 *     fn name(&self) -> &str { "word-count" }
 *     fn version(&self) -> String { "1.0.0".to_string() }
 *     fn initialize(&self) -> Result<()> { Ok(()) }
 *     fn shutdown(&self) -> Result<()> { Ok(()) }
 * }
 *
 * #[async_trait]
 * impl PostProcessor for WordCountProcessor {
 *     async fn process(&self, result: &mut ExtractionResult, config: &ExtractionConfig)
 *         -> Result<()> {
 *         // Count words
 *         let word_count = result.content.split_whitespace().count();
 *
 *         // Add to metadata
 *         result.metadata.additional.insert("word_count".to_string().into(), serde_json::json!(word_count));
 *
 *         Ok(())
 *     }
 *
 *     fn processing_stage(&self) -> ProcessingStage {
 *         ProcessingStage::Early
 *     }
 * }
 * \endcode
 */
typedef struct KREUZBERGPostProcessor KREUZBERGPostProcessor;
/**
 * Post-processor configuration.
 */
typedef struct KREUZBERGPostProcessorConfig KREUZBERGPostProcessorConfig;
/**
 * Application properties from docProps/app.xml for PPTX
 *
 * Contains PowerPoint-specific document metadata.
 */
typedef struct KREUZBERGPptxAppProperties KREUZBERGPptxAppProperties;
/**
 * PowerPoint (PPTX) extraction result.
 *
 * Contains extracted slide content, metadata, and embedded images/tables.
 */
typedef struct KREUZBERGPptxExtractionResult KREUZBERGPptxExtractionResult;
/**
 * PowerPoint presentation metadata.
 *
 * Extracted from PPTX files containing slide counts and presentation details.
 */
typedef struct KREUZBERGPptxMetadata KREUZBERGPptxMetadata;
/**
 * Processing stages for post-processors.
 *
 * Post-processors are executed in stage order (Early → Middle → Late).
 * Use stages to control the order of post-processing operations.
 */
typedef struct KREUZBERGProcessingStage KREUZBERGProcessingStage;
/**
 * A non-fatal warning from a processing pipeline stage.
 *
 * Captures errors from optional features that don't prevent extraction
 * but may indicate degraded results.
 */
typedef struct KREUZBERGProcessingWarning KREUZBERGProcessingWarning;
/**
 * Outlook PST archive metadata.
 */
typedef struct KREUZBERGPstMetadata KREUZBERGPstMetadata;
/**
 * RAKE-specific parameters.
 */
typedef struct KREUZBERGRakeParams KREUZBERGRakeParams;
/**
 * Pre-computed table markdown for a table detection region.
 *
 * Produced by the TATR-based table structure recognizer and surfaced as part of
 * layout-aware OCR results.  The struct lives here (under `layout-types`, pure-Rust)
 * so that consumers who do not enable `layout-detection` (ORT) can still reference
 * the type in their own code.
 */
typedef struct KREUZBERGRecognizedTable KREUZBERGRecognizedTable;
typedef struct KREUZBERGReductionLevel KREUZBERGReductionLevel;
/**
 * Semantic kind of a relationship between document elements.
 */
typedef struct KREUZBERGRelationshipKind KREUZBERGRelationshipKind;
/**
 * Trait for document renderers that convert [`InternalDocument`] to output strings.
 *
 * Renderers are typically stateless converters that transform the internal
 * document representation into a specific output format (Markdown, HTML,
 * Djot, plain text, etc.). They participate in the standard [`Plugin`]
 * lifecycle so custom renderers can be registered from any supported binding
 * language.
 *
 * The format name is exposed via [`Plugin::name`]. For stateless renderers
 * the [`Plugin`] lifecycle methods (`version`, `initialize`, `shutdown`) all
 * take no-op defaults and need not be overridden.
 *
 * # Thread Safety
 *
 * Renderers must be `Send + Sync` (inherited from [`Plugin`]).
 * \code
 * use kreuzberg::plugins::{Plugin, Renderer};
 * use kreuzberg::types::internal::InternalDocument;
 * use kreuzberg::Result;
 *
 * struct CustomRenderer;
 *
 * impl Plugin for CustomRenderer {
 *     fn name(&self) -> &str { "custom" }
 * }
 *
 * impl Renderer for CustomRenderer {
 *     fn render(&self, doc: &InternalDocument) -> Result<String> {
 *         Ok(format!("Custom output with {} elements", doc.elements.len()))
 *     }
 * }
 * \endcode
 */
typedef struct KREUZBERGRenderer KREUZBERGRenderer;
/**
 * Result-shape selection for extraction results.
 *
 * Distinct from `OutputFormat` (which controls rendering — Plain, Markdown,
 * HTML, etc.). `ResultFormat` controls the *shape* of the result: a unified content
 * blob vs. an element-based decomposition.
 */
typedef struct KREUZBERGResultFormat KREUZBERGResultFormat;
/**
 * Best-effort document location for a revision.
 */
typedef struct KREUZBERGRevisionAnchor KREUZBERGRevisionAnchor;
/**
 * The content changes that make up a single revision.
 *
 * For insertions and deletions the `content` field carries the added/removed
 * lines as `DiffLine::Added` / `DiffLine::Removed` entries. For format
 * changes, `content` is empty — the property diff is left as a TODO for a
 * later enrichment pass.
 */
typedef struct KREUZBERGRevisionDelta KREUZBERGRevisionDelta;
/**
 * Semantic classification of a tracked change.
 */
typedef struct KREUZBERGRevisionKind KREUZBERGRevisionKind;
/**
 * Configuration for security limits across extractors.
 *
 * All limits are intentionally conservative to prevent DoS attacks
 * while still supporting legitimate documents.
 */
typedef struct KREUZBERGSecurityLimits KREUZBERGSecurityLimits;
/**
 * API server configuration.
 *
 * This struct holds all configuration options for the Kreuzberg API server,
 * including host/port settings, CORS configuration, and upload limits.
 *
 * # Defaults
 *
 * - `host`: "127.0.0.1" (localhost only)
 * - `port`: 8000
 * - `cors_origins`: empty vector (allows all origins)
 * - `max_request_body_bytes`: 104_857_600 (100 MB)
 * - `max_multipart_field_bytes`: 104_857_600 (100 MB)
 */
typedef struct KREUZBERGServerConfig KREUZBERGServerConfig;
/**
 * Structured data (Schema.org, microdata, RDFa) block.
 */
typedef struct KREUZBERGStructuredData KREUZBERGStructuredData;
typedef struct KREUZBERGStructuredDataResult KREUZBERGStructuredDataResult;
/**
 * Structured data type classification.
 */
typedef struct KREUZBERGStructuredDataType KREUZBERGStructuredDataType;
/**
 * Configuration for LLM-based structured data extraction.
 *
 * Sends extracted document content to a VLM with a JSON schema,
 * returning structured data that conforms to the schema.
 * \code
 * [structured_extraction]
 * schema_name = "invoice_data"
 * strict = true
 *
 * [structured_extraction.schema]
 * type = "object"
 * properties.vendor = { type = "string" }
 * properties.total = { type = "number" }
 * required = ["vendor", "total"]
 *
 * [structured_extraction.llm]
 * model = "openai/gpt-4o"
 * \endcode
 */
typedef struct KREUZBERGStructuredExtractionConfig KREUZBERGStructuredExtractionConfig;
/**
 * A supported document format entry.
 *
 * Represents a file extension and its corresponding MIME type that Kreuzberg can process.
 */
typedef struct KREUZBERGSupportedFormat KREUZBERGSupportedFormat;
/**
 * Extracted table structure.
 *
 * Represents a table detected and extracted from a document (PDF, image, etc.).
 * Tables are converted to both structured cell data and Markdown format.
 */
typedef struct KREUZBERGTable KREUZBERGTable;
/**
 * Individual table cell with content and optional styling.
 *
 * Future extension point for rich table support with cell-level metadata.
 */
typedef struct KREUZBERGTableCell KREUZBERGTableCell;
/**
 * Cell-level changes for a pair of tables that share the same index.
 */
typedef struct KREUZBERGTableDiff KREUZBERGTableDiff;
/**
 * Structured table grid with cell-level metadata.
 *
 * Stores row/column dimensions and a flat list of cells with position info.
 */
typedef struct KREUZBERGTableGrid KREUZBERGTableGrid;
/**
 * Which table structure recognition model to use.
 *
 * Controls the model used for table cell detection within layout-detected
 * table regions. Wire format is snake_case in all serializers (JSON, TOML,
 * YAML).
 */
typedef struct KREUZBERGTableModel KREUZBERGTableModel;
/**
 * Tesseract OCR configuration.
 *
 * Provides fine-grained control over Tesseract OCR engine parameters.
 * Most users can use the defaults, but these settings allow optimization
 * for specific document types (invoices, handwriting, etc.).
 */
typedef struct KREUZBERGTesseractConfig KREUZBERGTesseractConfig;
/**
 * Inline text annotation — byte-range based formatting and links.
 *
 * Annotations reference byte offsets into the node's text content,
 * enabling precise identification of formatted regions.
 */
typedef struct KREUZBERGTextAnnotation KREUZBERGTextAnnotation;
/**
 * Text direction enumeration for HTML documents.
 */
typedef struct KREUZBERGTextDirection KREUZBERGTextDirection;
/**
 * Plain text and Markdown extraction result.
 *
 * Contains the extracted text along with statistics and,
 * for Markdown files, structural elements like headers and links.
 */
typedef struct KREUZBERGTextExtractionResult KREUZBERGTextExtractionResult;
/**
 * Text/Markdown metadata.
 *
 * Extracted from plain text and Markdown files. Includes word counts and,
 * for Markdown, structural elements like headers and links.
 */
typedef struct KREUZBERGTextMetadata KREUZBERGTextMetadata;
typedef struct KREUZBERGTokenReductionConfig KREUZBERGTokenReductionConfig;
/**
 * Token reduction configuration.
 */
typedef struct KREUZBERGTokenReductionOptions KREUZBERGTokenReductionOptions;
/**
 * Configuration for tree-sitter language pack integration.
 *
 * Controls grammar download behavior and code analysis options.
 *
 * # Example (TOML)
 *
 * ```toml
 * [tree_sitter]
 * languages = ["python", "rust"]
 * groups = ["web"]
 *
 * [tree_sitter.process]
 * structure = true
 * comments = true
 * docstrings = true
 * ```
 */
typedef struct KREUZBERGTreeSitterConfig KREUZBERGTreeSitterConfig;
/**
 * Processing options for tree-sitter code analysis.
 *
 * Controls which analysis features are enabled when extracting code files.
 */
typedef struct KREUZBERGTreeSitterProcessConfig KREUZBERGTreeSitterProcessConfig;
/**
 * Semantic classification of an extracted URI.
 */
typedef struct KREUZBERGUriKind KREUZBERGUriKind;
/**
 * Trait for validator plugins.
 *
 * Validators check extraction results for quality, completeness, or correctness.
 * Unlike post-processors, validator errors **fail fast** - if a validator returns
 * an error, the extraction fails immediately.
 *
 * # Use Cases
 *
 * - **Quality Gates**: Ensure extracted content meets minimum quality standards
 * - **Compliance**: Verify content meets regulatory requirements
 * - **Content Filtering**: Reject documents containing unwanted content
 * - **Format Validation**: Verify extracted content structure
 * - **Security Checks**: Scan for malicious content
 *
 * # Error Handling
 *
 * Validator errors are **fatal** - they cause the extraction to fail and bubble up
 * to the caller. Use validators for hard requirements that must be met.
 *
 * For non-fatal checks, use post-processors instead.
 *
 * # Thread Safety
 *
 * Validators must be thread-safe (`Send + Sync`).
 * \code
 * use kreuzberg::plugins::{Plugin, Validator};
 * use kreuzberg::{Result, ExtractionResult, ExtractionConfig, KreuzbergError};
 * use async_trait::async_trait;
 *
 * /// Validate that extracted content has minimum length
 * struct MinimumLengthValidator {
 *     min_length: usize,
 * }
 *
 * impl Plugin for MinimumLengthValidator {
 *     fn name(&self) -> &str { "min-length-validator" }
 *     fn version(&self) -> String { "1.0.0".to_string() }
 *     fn initialize(&self) -> Result<()> { Ok(()) }
 *     fn shutdown(&self) -> Result<()> { Ok(()) }
 * }
 *
 * #[async_trait]
 * impl Validator for MinimumLengthValidator {
 *     async fn validate(&self, result: &ExtractionResult, config: &ExtractionConfig)
 *         -> Result<()> {
 *         if result.content.len() < self.min_length {
 *             return Err(KreuzbergError::validation(format!(
 *                 "Content too short: {} < {} characters",
 *                 result.content.len(),
 *                 self.min_length
 *             )));
 *         }
 *         Ok(())
 *     }
 * }
 * \endcode
 */
typedef struct KREUZBERGValidator KREUZBERGValidator;
/**
 * Application properties from docProps/app.xml for XLSX
 *
 * Contains Excel-specific document metadata.
 */
typedef struct KREUZBERGXlsxAppProperties KREUZBERGXlsxAppProperties;
/**
 * XML extraction result.
 *
 * Contains extracted text content from XML files along with
 * structural statistics about the XML document.
 */
typedef struct KREUZBERGXmlExtractionResult KREUZBERGXmlExtractionResult;
/**
 * XML metadata extracted during XML parsing.
 *
 * Provides statistics about XML document structure.
 */
typedef struct KREUZBERGXmlMetadata KREUZBERGXmlMetadata;
/**
 * YAKE-specific parameters.
 */
typedef struct KREUZBERGYakeParams KREUZBERGYakeParams;
/**
 * Year range for bibliographic metadata.
 */
typedef struct KREUZBERGYearRange KREUZBERGYearRange;


/**
 * VTable for C plugin bridges implementing the `OcrBackend` trait.
 *
 * # Safety
 *
 * All function pointers must be valid for the lifetime of any bridge created from
 * this vtable.  `free_user_data`, when non-null, is called once with `user_data`
 * when the bridge is dropped.
 */
typedef struct KREUZBERGKreuzbergOcrBackendVTable {
  /**
   * Return a null-terminated UTF-8 name string into `out_name`; return 0 on success.
   */
  int32_t (*name_fn)(const void *user_data,
                     char **out_name,
                     char **out_error);
  /**
   * Return a null-terminated UTF-8 version string into `out_version`; return 0 on success.
   */
  int32_t (*version_fn)(const void *user_data,
                        char **out_version,
                        char **out_error);
  /**
   * Initialise the plugin; return 0 on success, non-zero on failure (error text in `out_error`).
   */
  int32_t (*initialize_fn)(const void *user_data,
                           char **out_error);
  /**
   * Shut down the plugin; return 0 on success, non-zero on failure (error text in `out_error`).
   */
  int32_t (*shutdown_fn)(const void *user_data,
                         char **out_error);
  /**
   * Process an image and extract text via OCR.
   *
   * # Arguments
   *
   * * `image_bytes` - Raw image data (JPEG, PNG, TIFF, etc.)
   * * `config` - OCR configuration (language, PSM mode, etc.)
   *
   * # Returns
   *
   * An `ExtractionResult` containing the extracted text and metadata.
   *
   * # Errors
   *
   * - `KreuzbergError::Ocr` - OCR processing failed
   * - `KreuzbergError::Validation` - Invalid image format or configuration
   * - `KreuzbergError::Io` - I/O errors (these always bubble up)
   *
   * # Reading `backend_options`
   *
   * Backends that support runtime tuning can read `config.backend_options` and
   * deserialize only the keys they care about. Unknown keys are silently ignored,
   * so multiple backends can coexist in a pipeline without key conflicts.
   *
   * ```rust
   * async fn process_image(&self, image_bytes: &[u8], config: &OcrConfig) -> Result<ExtractionResult> {
   * // Read backend-specific options; unknown keys are silently ignored.
   * let fast_mode = config.backend_options
   * .as_ref()
   * .and_then(|v| v.get("mode"))
   * .and_then(|v| v.as_str())
   * .map(|s| s == "fast")
   * .unwrap_or(false);
   *
   * if image_bytes.is_empty() {
   * return Err(kreuzberg::KreuzbergError::Validation {
   * message: "Empty image data".to_string(),
   * source: None,
   * });
   * }
   *
   * let text = if fast_mode {
   * "Fast OCR result".to_string()
   * } else {
   * format!("Extracted text in language: {}", config.language)
   * };
   *
   * Ok(ExtractionResult {
   * content: text,
   * mime_type: Cow::Borrowed("text/plain"),
   * ..Default::default()
   * })
   * }
   * ```
   */
  int32_t (*process_image)(const void *user_data,
                           const uint8_t *image_bytes,
                           uintptr_t image_bytes_len,
                           const char *config,
                           char **out_result,
                           char **out_error);
  /**
   * Process a file and extract text via OCR.
   *
   * Default implementation reads the file and calls `process_image`.
   * Override for custom file handling or optimizations.
   *
   * # Arguments
   *
   * * `path` - Path to the image file
   * * `config` - OCR configuration
   *
   * # Errors
   *
   * Same as `process_image`, plus file I/O errors.
   */
  int32_t (*process_image_file)(const void *user_data,
                                const char *path,
                                const char *config,
                                char **out_result,
                                char **out_error);
  /**
   * Check if this backend supports a given language code.
   *
   * # Arguments
   *
   * * `lang` - ISO 639-2/3 language code (e.g., "eng", "deu", "fra")
   *
   * # Returns
   *
   * `true` if the language is supported, `false` otherwise.
   *
   * # Example
   *
   * ```rust
   * fn supports_language(&self, lang: &str) -> bool {
   * self.languages.contains(&lang.to_string())
   * }
   * ```
   */
  int32_t (*supports_language)(const void *user_data,
                               const char *lang);
  /**
   * Get the backend type identifier.
   *
   * # Returns
   *
   * The backend type enum value.
   *
   * # Example
   *
   * ```rust
   * fn backend_type(&self) -> OcrBackendType {
   * OcrBackendType::Tesseract
   * }
   * ```
   */
  int32_t (*backend_type)(const void *user_data,
                          char **out_result,
                          char **out_error);
  /**
   * Optional: Get a list of all supported languages.
   *
   * Defaults to empty list. Override to provide comprehensive language support info.
   */
  int32_t (*supported_languages)(const void *user_data,
                                 char **out_result,
                                 char **out_error);
  /**
   * Optional: Check if the backend supports table detection.
   *
   * Defaults to `false`. Override if your backend can detect and extract tables.
   */
  int32_t (*supports_table_detection)(const void *user_data);
  /**
   * Check if the backend supports direct document-level processing (e.g. for PDFs).
   *
   * Defaults to `false`. Override if the backend has optimized document processing.
   */
  int32_t (*supports_document_processing)(const void *user_data);
  /**
   * Process a document file directly via OCR.
   *
   * Only called if `supports_document_processing` returns `true`.
   *
   * # Arguments
   *
   * * `path` - Path to the document file (e.g. .pdf)
   * * `config` - OCR configuration
   */
  int32_t (*process_document)(const void *user_data,
                              const char *_path,
                              const char *_config,
                              char **out_result,
                              char **out_error);
  /**
   * Optional string destructor: called for strings returned by vtable callbacks.
   */
  void (*free_string)(char*);
  /**
   * Optional destructor: called once with `user_data` when the bridge is dropped.
   */
  void (*free_user_data)(void*);
} KREUZBERGKreuzbergOcrBackendVTable;

/**
 * VTable for C plugin bridges implementing the `PostProcessor` trait.
 *
 * # Safety
 *
 * All function pointers must be valid for the lifetime of any bridge created from
 * this vtable.  `free_user_data`, when non-null, is called once with `user_data`
 * when the bridge is dropped.
 */
typedef struct KREUZBERGKreuzbergPostProcessorVTable {
  /**
   * Return a null-terminated UTF-8 name string into `out_name`; return 0 on success.
   */
  int32_t (*name_fn)(const void *user_data,
                     char **out_name,
                     char **out_error);
  /**
   * Return a null-terminated UTF-8 version string into `out_version`; return 0 on success.
   */
  int32_t (*version_fn)(const void *user_data,
                        char **out_version,
                        char **out_error);
  /**
   * Initialise the plugin; return 0 on success, non-zero on failure (error text in `out_error`).
   */
  int32_t (*initialize_fn)(const void *user_data,
                           char **out_error);
  /**
   * Shut down the plugin; return 0 on success, non-zero on failure (error text in `out_error`).
   */
  int32_t (*shutdown_fn)(const void *user_data,
                         char **out_error);
  /**
   * Process an extraction result.
   *
   * Transform or enrich the extraction result. Can modify:
   * - `content` - The extracted text
   * - `metadata` - Add or update metadata fields
   * - `tables` - Modify or enhance table data
   *
   * # Arguments
   *
   * * `result` - Mutable reference to the extraction result to process
   * * `config` - Extraction configuration
   *
   * # Returns
   *
   * `Ok(())` if processing succeeded, `Err(...)` for fatal failures.
   *
   * # Errors
   *
   * Return errors for fatal processing failures. Non-fatal errors should be
   * captured in metadata directly on the result.
   *
   * # Performance
   *
   * This signature avoids unnecessary cloning of large extraction results by
   * taking a mutable reference instead of ownership. Processors modify the
   * result in place.
   *
   * # Example - Language Detection
   *
   * ```rust
   * async fn process(&self, result: &mut ExtractionResult, config: &ExtractionConfig)
   * -> Result<()> {
   * // Detect language (simplified - use real detection library in practice)
   * let language = "en"; // Placeholder detection
   *
   * // Add to metadata
   * result.metadata.additional.insert("detected_language".to_string().into(), serde_json::json!(language));
   *
   * Ok(())
   * }
   * ```
   *
   * # Example - Text Cleaning
   *
   * ```rust
   * async fn process(&self, result: &mut ExtractionResult, config: &ExtractionConfig)
   * -> Result<()> {
   * // Remove excessive whitespace
   * result.content = result
   * .content
   * .split_whitespace()
   * .collect::<Vec<_>>()
   * .join(" ");
   *
   * Ok(())
   * }
   * ```
   */
  int32_t (*process)(const void *user_data,
                     const char *result,
                     const char *config,
                     char **out_error);
  /**
   * Get the processing stage for this post-processor.
   *
   * Determines when this processor runs in the pipeline.
   *
   * # Returns
   *
   * The `ProcessingStage` (Early, Middle, or Late).
   *
   * # Example
   *
   * ```rust
   * fn processing_stage(&self) -> ProcessingStage {
   * ProcessingStage::Early  // Run before other processors
   * }
   * ```
   */
  int32_t (*processing_stage)(const void *user_data,
                              char **out_result,
                              char **out_error);
  /**
   * Optional: Check if this processor should run for a given result.
   *
   * Allows conditional processing based on MIME type, metadata, or content.
   * Defaults to `true` (always run).
   *
   * # Arguments
   *
   * * `result` - The extraction result to check
   * * `config` - Extraction configuration
   *
   * # Returns
   *
   * `true` if the processor should run, `false` to skip.
   *
   * # Example
   *
   * ```rust
   * Only process PDF documents
   * fn should_process(&self, result: &ExtractionResult, config: &ExtractionConfig) -> bool {
   * result.mime_type == "application/pdf"
   * }
   * ```
   */
  int32_t (*should_process)(const void *user_data,
                            const char *_result,
                            const char *_config);
  /**
   * Optional: Estimate processing time in milliseconds.
   *
   * Used for logging and debugging. Defaults to 0 (unknown).
   *
   * # Arguments
   *
   * * `result` - The extraction result to estimate for
   *
   * # Returns
   *
   * Estimated processing time in milliseconds.
   */
  uint64_t (*estimated_duration_ms)(const void *user_data,
                                    const char *_result);
  /**
   * Execution priority within the processing stage.
   *
   * Higher values run first within the same `ProcessingStage`. Defaults to 50.
   * Use 0-49 for fallback processors, 50 for normal processors, and 51-255
   * for high-priority processors that should run early in their stage.
   */
  int32_t (*priority)(const void *user_data);
  /**
   * Optional string destructor: called for strings returned by vtable callbacks.
   */
  void (*free_string)(char*);
  /**
   * Optional destructor: called once with `user_data` when the bridge is dropped.
   */
  void (*free_user_data)(void*);
} KREUZBERGKreuzbergPostProcessorVTable;

/**
 * VTable for C plugin bridges implementing the `Validator` trait.
 *
 * # Safety
 *
 * All function pointers must be valid for the lifetime of any bridge created from
 * this vtable.  `free_user_data`, when non-null, is called once with `user_data`
 * when the bridge is dropped.
 */
typedef struct KREUZBERGKreuzbergValidatorVTable {
  /**
   * Return a null-terminated UTF-8 name string into `out_name`; return 0 on success.
   */
  int32_t (*name_fn)(const void *user_data,
                     char **out_name,
                     char **out_error);
  /**
   * Return a null-terminated UTF-8 version string into `out_version`; return 0 on success.
   */
  int32_t (*version_fn)(const void *user_data,
                        char **out_version,
                        char **out_error);
  /**
   * Initialise the plugin; return 0 on success, non-zero on failure (error text in `out_error`).
   */
  int32_t (*initialize_fn)(const void *user_data,
                           char **out_error);
  /**
   * Shut down the plugin; return 0 on success, non-zero on failure (error text in `out_error`).
   */
  int32_t (*shutdown_fn)(const void *user_data,
                         char **out_error);
  /**
   * Validate an extraction result.
   *
   * Check the extraction result and return `Ok(())` if valid, or an error
   * if validation fails.
   *
   * # Arguments
   *
   * * `result` - The extraction result to validate
   * * `config` - Extraction configuration
   *
   * # Returns
   *
   * - `Ok(())` if validation passes
   * - `Err(...)` if validation fails (extraction will fail)
   *
   * # Errors
   *
   * - `KreuzbergError::Validation` - Validation failed
   * - Any other error type appropriate for the failure
   *
   * # Example - Content Length Validation
   *
   * ```rust
   * async fn validate(&self, result: &ExtractionResult, config: &ExtractionConfig)
   * -> Result<()> {
   * let length = result.content.len();
   *
   * if length < self.min {
   * return Err(KreuzbergError::validation(format!(
   * "Content too short: {} < {} characters",
   * length, self.min
   * )));
   * }
   *
   * if length > self.max {
   * return Err(KreuzbergError::validation(format!(
   * "Content too long: {} > {} characters",
   * length, self.max
   * )));
   * }
   *
   * Ok(())
   * }
   * ```
   *
   * # Example - Quality Score Validation
   *
   * ```rust
   * async fn validate(&self, result: &ExtractionResult, config: &ExtractionConfig)
   * -> Result<()> {
   * // Check if quality_score exists in metadata
   * let score = result.metadata
   * .additional
   * .get("quality_score")
   * .and_then(|v| v.as_f64())
   * .unwrap_or(0.0);
   *
   * if score < self.min_score {
   * return Err(KreuzbergError::validation(format!(
   * "Quality score too low: {} < {}",
   * score, self.min_score
   * )));
   * }
   *
   * Ok(())
   * }
   * ```
   *
   * # Example - Security Validation
   *
   * ```rust
   * async fn validate(&self, result: &ExtractionResult, config: &ExtractionConfig)
   * -> Result<()> {
   * // Check for blocked patterns
   * for pattern in &self.blocked_patterns {
   * if result.content.contains(pattern) {
   * return Err(KreuzbergError::validation(format!(
   * "Content contains blocked pattern: {}",
   * pattern
   * )));
   * }
   * }
   *
   * Ok(())
   * }
   * ```
   */
  int32_t (*validate)(const void *user_data,
                      const char *result,
                      const char *config,
                      char **out_error);
  /**
   * Optional: Check if this validator should run for a given result.
   *
   * Allows conditional validation based on MIME type, metadata, or content.
   * Defaults to `true` (always run).
   *
   * # Arguments
   *
   * * `result` - The extraction result to check
   * * `config` - Extraction configuration
   *
   * # Returns
   *
   * `true` if the validator should run, `false` to skip.
   *
   * # Example
   *
   * ```rust
   * Only validate PDF documents
   * fn should_validate(&self, result: &ExtractionResult, config: &ExtractionConfig) -> bool {
   * result.mime_type == "application/pdf"
   * }
   * ```
   */
  int32_t (*should_validate)(const void *user_data,
                             const char *_result,
                             const char *_config);
  /**
   * Optional: Get the validation priority.
   *
   * Higher priority validators run first. Useful for ordering validation checks
   * (e.g., run cheap validations before expensive ones).
   *
   * Default priority is 50.
   *
   * # Returns
   *
   * Priority value (higher = runs earlier).
   *
   * # Example
   *
   * ```rust
   * Run this validator first (it's fast)
   * fn priority(&self) -> i32 {
   * 100
   * }
   * ```
   */
  int32_t (*priority)(const void *user_data);
  /**
   * Optional string destructor: called for strings returned by vtable callbacks.
   */
  void (*free_string)(char*);
  /**
   * Optional destructor: called once with `user_data` when the bridge is dropped.
   */
  void (*free_user_data)(void*);
} KREUZBERGKreuzbergValidatorVTable;

/**
 * VTable for C plugin bridges implementing the `EmbeddingBackend` trait.
 *
 * # Safety
 *
 * All function pointers must be valid for the lifetime of any bridge created from
 * this vtable.  `free_user_data`, when non-null, is called once with `user_data`
 * when the bridge is dropped.
 */
typedef struct KREUZBERGKreuzbergEmbeddingBackendVTable {
  /**
   * Return a null-terminated UTF-8 name string into `out_name`; return 0 on success.
   */
  int32_t (*name_fn)(const void *user_data,
                     char **out_name,
                     char **out_error);
  /**
   * Return a null-terminated UTF-8 version string into `out_version`; return 0 on success.
   */
  int32_t (*version_fn)(const void *user_data,
                        char **out_version,
                        char **out_error);
  /**
   * Initialise the plugin; return 0 on success, non-zero on failure (error text in `out_error`).
   */
  int32_t (*initialize_fn)(const void *user_data,
                           char **out_error);
  /**
   * Shut down the plugin; return 0 on success, non-zero on failure (error text in `out_error`).
   */
  int32_t (*shutdown_fn)(const void *user_data,
                         char **out_error);
  /**
   * Embedding vector dimension. Must be `> 0` and must match the length of
   * every vector returned by `embed`.
   */
  uintptr_t (*dimensions)(const void *user_data);
  /**
   * Embed a batch of texts, returning one vector per input in order.
   *
   * # Errors
   *
   * Implementations should return `Plugin` for
   * backend-specific failures. The dispatcher layers its own validation
   * (length, per-vector dimension) on top.
   */
  int32_t (*embed)(const void *user_data,
                   const char *texts,
                   char **out_result,
                   char **out_error);
  /**
   * Optional string destructor: called for strings returned by vtable callbacks.
   */
  void (*free_string)(char*);
  /**
   * Optional destructor: called once with `user_data` when the bridge is dropped.
   */
  void (*free_user_data)(void*);
} KREUZBERGKreuzbergEmbeddingBackendVTable;

/**
 * VTable for C plugin bridges implementing the `DocumentExtractor` trait.
 *
 * # Safety
 *
 * All function pointers must be valid for the lifetime of any bridge created from
 * this vtable.  `free_user_data`, when non-null, is called once with `user_data`
 * when the bridge is dropped.
 */
typedef struct KREUZBERGKreuzbergDocumentExtractorVTable {
  /**
   * Return a null-terminated UTF-8 name string into `out_name`; return 0 on success.
   */
  int32_t (*name_fn)(const void *user_data,
                     char **out_name,
                     char **out_error);
  /**
   * Return a null-terminated UTF-8 version string into `out_version`; return 0 on success.
   */
  int32_t (*version_fn)(const void *user_data,
                        char **out_version,
                        char **out_error);
  /**
   * Initialise the plugin; return 0 on success, non-zero on failure (error text in `out_error`).
   */
  int32_t (*initialize_fn)(const void *user_data,
                           char **out_error);
  /**
   * Shut down the plugin; return 0 on success, non-zero on failure (error text in `out_error`).
   */
  int32_t (*shutdown_fn)(const void *user_data,
                         char **out_error);
  /**
   * Extract content from a byte array.
   *
   * This is the core extraction method that processes in-memory document data.
   *
   * # Arguments
   *
   * * `content` - Raw document bytes
   * * `mime_type` - MIME type of the document (already validated)
   * * `config` - Extraction configuration
   *
   * # Returns
   *
   * An `InternalDocument` containing the extracted elements, metadata, and tables.
   * The pipeline will convert this into the public `ExtractionResult`.
   *
   * # Errors
   *
   * - `KreuzbergError::Parsing` - Document parsing failed
   * - `KreuzbergError::Validation` - Invalid document structure
   * - `KreuzbergError::Io` - I/O errors (these always bubble up)
   * - `KreuzbergError::MissingDependency` - Required dependency not available
   */
  int32_t (*extract_bytes)(const void *user_data,
                           const uint8_t *content,
                           uintptr_t content_len,
                           const char *mime_type,
                           const char *config,
                           char **out_result,
                           char **out_error);
  /**
   * Extract content from a file.
   *
   * Default implementation reads the file and calls `extract_bytes`.
   * Override for custom file handling, streaming, or memory optimizations.
   *
   * # Arguments
   *
   * * `path` - Path to the document file
   * * `mime_type` - MIME type of the document (already validated)
   * * `config` - Extraction configuration
   *
   * # Returns
   *
   * An `InternalDocument` containing the extracted elements, metadata, and tables.
   *
   * # Errors
   *
   * Same as `extract_bytes`, plus file I/O errors.
   */
  int32_t (*extract_file)(const void *user_data,
                          const char *path,
                          const char *mime_type,
                          const char *config,
                          char **out_result,
                          char **out_error);
  /**
   * Get the list of MIME types supported by this extractor.
   *
   * Can include exact MIME types and prefix patterns:
   * - Exact: `"application/pdf"`, `"text/plain"`
   * - Prefix: `"image/*"` (matches any image type)
   *
   * # Returns
   *
   * A slice of MIME type strings.
   */
  int32_t (*supported_mime_types)(const void *user_data,
                                  char **out_result,
                                  char **out_error);
  /**
   * Get the priority of this extractor.
   *
   * Higher priority extractors are preferred when multiple extractors
   * support the same MIME type.
   *
   * # Priority Guidelines
   *
   * - **0-25**: Fallback/low-quality extractors
   * - **26-49**: Alternative extractors
   * - **50**: Default priority (built-in extractors)
   * - **51-75**: Premium/enhanced extractors
   * - **76-100**: Specialized/high-priority extractors
   *
   * # Returns
   *
   * Priority value (default: 50)
   */
  int32_t (*priority)(const void *user_data);
  /**
   * Optional: Check if this extractor can handle a specific file.
   *
   * Allows for more sophisticated detection beyond MIME types.
   * Defaults to `true` (rely on MIME type matching).
   *
   * # Arguments
   *
   * * `path` - Path to the file to check
   * * `mime_type` - Detected MIME type
   *
   * # Returns
   *
   * `true` if the extractor can handle this file, `false` otherwise.
   */
  int32_t (*can_handle)(const void *user_data,
                        const char *_path,
                        const char *_mime_type);
  /**
   * Optional string destructor: called for strings returned by vtable callbacks.
   */
  void (*free_string)(char*);
  /**
   * Optional destructor: called once with `user_data` when the bridge is dropped.
   */
  void (*free_user_data)(void*);
} KREUZBERGKreuzbergDocumentExtractorVTable;

/**
 * VTable for C plugin bridges implementing the `Renderer` trait.
 *
 * # Safety
 *
 * All function pointers must be valid for the lifetime of any bridge created from
 * this vtable.  `free_user_data`, when non-null, is called once with `user_data`
 * when the bridge is dropped.
 */
typedef struct KREUZBERGKreuzbergRendererVTable {
  /**
   * Return a null-terminated UTF-8 name string into `out_name`; return 0 on success.
   */
  int32_t (*name_fn)(const void *user_data,
                     char **out_name,
                     char **out_error);
  /**
   * Return a null-terminated UTF-8 version string into `out_version`; return 0 on success.
   */
  int32_t (*version_fn)(const void *user_data,
                        char **out_version,
                        char **out_error);
  /**
   * Initialise the plugin; return 0 on success, non-zero on failure (error text in `out_error`).
   */
  int32_t (*initialize_fn)(const void *user_data,
                           char **out_error);
  /**
   * Shut down the plugin; return 0 on success, non-zero on failure (error text in `out_error`).
   */
  int32_t (*shutdown_fn)(const void *user_data,
                         char **out_error);
  /**
   * Render an [`InternalDocument`] to the output format.
   *
   * # Arguments
   *
   * * `doc` - The internal document to render
   *
   * # Returns
   *
   * The rendered output as a string.
   *
   * # Errors
   *
   * Returns an error if rendering fails.
   */
  int32_t (*render)(const void *user_data,
                    const char *doc,
                    char **out_result,
                    char **out_error);
  /**
   * Optional string destructor: called for strings returned by vtable callbacks.
   */
  void (*free_string)(char*);
  /**
   * Optional destructor: called once with `user_data` when the bridge is dropped.
   */
  void (*free_user_data)(void*);
} KREUZBERGKreuzbergRendererVTable;

/**
 * Return the last error code (0 means no error).
 * # Safety
 * Caller must ensure all pointer arguments are valid or null.
 * This function does not allocate and returns no owned pointer.
 */
int32_t kreuzberg_last_error_code(void);

/**
 * Return the last error message. The pointer is borrowed and valid until the next FFI call on this thread.
 * # Safety
 * Caller must ensure all pointer arguments are valid or null.
 * The returned pointer is borrowed from thread-local storage and must NOT be freed.
 */
const char *kreuzberg_last_error_context(void);

/**
 * Free a string previously returned by this library.
 * # Safety
 * Pointer must have been returned by this library, or be null.
 */
void kreuzberg_free_string(char *ptr);

/**
 * Free a byte buffer previously returned by this library via out-params.
 * `ptr`, `len`, and `cap` must match the values written by the library function,
 * or the call must pass `ptr = null` (in which case it is a no-op).
 * # Safety
 * Pointer must have been returned by this library (via out_ptr / out_len / out_cap
 * out-params), or be null. The len and cap values must be unchanged since the call.
 */
void kreuzberg_free_bytes(uint8_t *ptr,
                          uintptr_t len,
                          uintptr_t cap);

/**
 * Return the library version string. The pointer is static and must NOT be freed.
 * # Safety
 * Caller must ensure all pointer arguments are valid or null.
 * Returned pointers must be freed with the appropriate free function.
 */
const char *kreuzberg_version(void);

/**
 * Create a `CacheStats` from a JSON string. Returns null on failure.
 * # Safety
 * JSON string must be valid UTF-8 and null-terminated.
 * Returned handle must be freed with `kreuzberg_cache_stats_free`.
 */
KREUZBERGCacheStats *kreuzberg_cache_stats_from_json(const char *json);

/**
 * Serialize a `CacheStats` to a JSON string. Returns null on failure.
 * # Safety
 * `ptr` must be a valid, non-null pointer returned by a `kreuzberg` function.
 * The returned string must be freed with `kreuzberg_free_string`.
 */
char *kreuzberg_cache_stats_to_json(const KREUZBERGCacheStats *ptr);

/**
 * Free a `CacheStats` handle.
 * # Safety
 * Pointer must have been returned by this library, or be null.
 */
void kreuzberg_cache_stats_free(KREUZBERGCacheStats *ptr);

/**
 * Get the `total_files` field from a `CacheStats`.
 * # Safety
 * Pointer must be a valid handle returned by this library.
 */
uintptr_t kreuzberg_cache_stats_total_files(const KREUZBERGCacheStats *ptr);

/**
 * Get the `total_size_mb` field from a `CacheStats`.
 * # Safety
 * Pointer must be a valid handle returned by this library.
 */
double kreuzberg_cache_stats_total_size_mb(const KREUZBERGCacheStats *ptr);

/**
 * Get the `available_space_mb` field from a `CacheStats`.
 * # Safety
 * Pointer must be a valid handle returned by this library.
 */
double kreuzberg_cache_stats_available_space_mb(const KREUZBERGCacheStats *ptr);

/**
 * Get the `oldest_file_age_days` field from a `CacheStats`.
 * # Safety
 * Pointer must be a valid handle returned by this library.
 */
double kreuzberg_cache_stats_oldest_file_age_days(const KREUZBERGCacheStats *ptr);

/**
 * Get the `newest_file_age_days` field from a `CacheStats`.
 * # Safety
 * Pointer must be a valid handle returned by this library.
 */
double kreuzberg_cache_stats_newest_file_age_days(const KREUZBERGCacheStats *ptr);

/**
 * Create a `AccelerationConfig` from a JSON string. Returns null on failure.
 * # Safety
 * JSON string must be valid UTF-8 and null-terminated.
 * Returned handle must be freed with `kreuzberg_acceleration_config_free`.
 */
KREUZBERGAccelerationConfig *kreuzberg_acceleration_config_from_json(const char *json);

/**
 * Serialize a `AccelerationConfig` to a JSON string. Returns null on failure.
 * # Safety
 * `ptr` must be a valid, non-null pointer returned by a `kreuzberg` function.
 * The returned string must be freed with `kreuzberg_free_string`.
 */
char *kreuzberg_acceleration_config_to_json(const KREUZBERGAccelerationConfig *ptr);

/**
 * Free a `AccelerationConfig` handle.
 * # Safety
 * Pointer must have been returned by this library, or be null.
 */
void kreuzberg_acceleration_config_free(KREUZBERGAccelerationConfig *ptr);

/**
 * Get the `provider` field from a `AccelerationConfig`.
 * # Safety
 * Pointer must be a valid handle returned by this library.
 */
KREUZBERGExecutionProviderType *kreuzberg_acceleration_config_provider(const KREUZBERGAccelerationConfig *ptr);

/**
 * Get the `device_id` field from a `AccelerationConfig`.
 * # Safety
 * Pointer must be a valid handle returned by this library.
 */
uint32_t kreuzberg_acceleration_config_device_id(const KREUZBERGAccelerationConfig *ptr);

/**
 * Create a `ContentFilterConfig` from a JSON string. Returns null on failure.
 * # Safety
 * JSON string must be valid UTF-8 and null-terminated.
 * Returned handle must be freed with `kreuzberg_content_filter_config_free`.
 */
KREUZBERGContentFilterConfig *kreuzberg_content_filter_config_from_json(const char *json);

/**
 * Serialize a `ContentFilterConfig` to a JSON string. Returns null on failure.
 * # Safety
 * `ptr` must be a valid, non-null pointer returned by a `kreuzberg` function.
 * The returned string must be freed with `kreuzberg_free_string`.
 */
char *kreuzberg_content_filter_config_to_json(const KREUZBERGContentFilterConfig *ptr);

/**
 * Free a `ContentFilterConfig` handle.
 * # Safety
 * Pointer must have been returned by this library, or be null.
 */
void kreuzberg_content_filter_config_free(KREUZBERGContentFilterConfig *ptr);

/**
 * Get the `include_headers` field from a `ContentFilterConfig`.
 * # Safety
 * Pointer must be a valid handle returned by this library.
 */
int32_t kreuzberg_content_filter_config_include_headers(const KREUZBERGContentFilterConfig *ptr);

/**
 * Get the `include_footers` field from a `ContentFilterConfig`.
 * # Safety
 * Pointer must be a valid handle returned by this library.
 */
int32_t kreuzberg_content_filter_config_include_footers(const KREUZBERGContentFilterConfig *ptr);

/**
 * Get the `strip_repeating_text` field from a `ContentFilterConfig`.
 * # Safety
 * Pointer must be a valid handle returned by this library.
 */
int32_t kreuzberg_content_filter_config_strip_repeating_text(const KREUZBERGContentFilterConfig *ptr);

/**
 * Get the `include_watermarks` field from a `ContentFilterConfig`.
 * # Safety
 * Pointer must be a valid handle returned by this library.
 */
int32_t kreuzberg_content_filter_config_include_watermarks(const KREUZBERGContentFilterConfig *ptr);

/**
 * \note SAFETY: Caller must ensure all pointer arguments are valid or null. Returned pointers must be
 * freed with the appropriate free function.
 */
KREUZBERGContentFilterConfig *kreuzberg_content_filter_config_default(void);

/**
 * Create a `EmailConfig` from a JSON string. Returns null on failure.
 * # Safety
 * JSON string must be valid UTF-8 and null-terminated.
 * Returned handle must be freed with `kreuzberg_email_config_free`.
 */
KREUZBERGEmailConfig *kreuzberg_email_config_from_json(const char *json);

/**
 * Serialize a `EmailConfig` to a JSON string. Returns null on failure.
 * # Safety
 * `ptr` must be a valid, non-null pointer returned by a `kreuzberg` function.
 * The returned string must be freed with `kreuzberg_free_string`.
 */
char *kreuzberg_email_config_to_json(const KREUZBERGEmailConfig *ptr);

/**
 * Free a `EmailConfig` handle.
 * # Safety
 * Pointer must have been returned by this library, or be null.
 */
void kreuzberg_email_config_free(KREUZBERGEmailConfig *ptr);

/**
 * Get the `msg_fallback_codepage` field from a `EmailConfig`.
 * # Safety
 * Pointer must be a valid handle returned by this library.
 */
uint32_t kreuzberg_email_config_msg_fallback_codepage(const KREUZBERGEmailConfig *ptr);

/**
 * Create a `ExtractionConfig` from a JSON string. Returns null on failure.
 * # Safety
 * JSON string must be valid UTF-8 and null-terminated.
 * Returned handle must be freed with `kreuzberg_extraction_config_free`.
 */
KREUZBERGExtractionConfig *kreuzberg_extraction_config_from_json(const char *json);

/**
 * Serialize a `ExtractionConfig` to a JSON string. Returns null on failure.
 * # Safety
 * `ptr` must be a valid, non-null pointer returned by a `kreuzberg` function.
 * The returned string must be freed with `kreuzberg_free_string`.
 */
char *kreuzberg_extraction_config_to_json(const KREUZBERGExtractionConfig *ptr);

/**
 * Free a `ExtractionConfig` handle.
 * # Safety
 * Pointer must have been returned by this library, or be null.
 */
void kreuzberg_extraction_config_free(KREUZBERGExtractionConfig *ptr);

/**
 * Get the `use_cache` field from a `ExtractionConfig`.
 * # Safety
 * Pointer must be a valid handle returned by this library.
 */
int32_t kreuzberg_extraction_config_use_cache(const KREUZBERGExtractionConfig *ptr);

/**
 * Get the `enable_quality_processing` field from a `ExtractionConfig`.
 * # Safety
 * Pointer must be a valid handle returned by this library.
 */
int32_t kreuzberg_extraction_config_enable_quality_processing(const KREUZBERGExtractionConfig *ptr);

/**
 * Get the `ocr` field from a `ExtractionConfig`.
 * # Safety
 * Pointer must be a valid handle returned by this library.
 */
KREUZBERGOcrConfig *kreuzberg_extraction_config_ocr(const KREUZBERGExtractionConfig *ptr);

/**
 * Get the `force_ocr` field from a `ExtractionConfig`.
 * # Safety
 * Pointer must be a valid handle returned by this library.
 */
int32_t kreuzberg_extraction_config_force_ocr(const KREUZBERGExtractionConfig *ptr);

/**
 * Get the `force_ocr_pages` field from a `ExtractionConfig`.
 * # Safety
 * Pointer must be a valid handle returned by this library.
 */
char *kreuzberg_extraction_config_force_ocr_pages(const KREUZBERGExtractionConfig *ptr);

/**
 * Get the `disable_ocr` field from a `ExtractionConfig`.
 * # Safety
 * Pointer must be a valid handle returned by this library.
 */
int32_t kreuzberg_extraction_config_disable_ocr(const KREUZBERGExtractionConfig *ptr);

/**
 * Get the `chunking` field from a `ExtractionConfig`.
 * # Safety
 * Pointer must be a valid handle returned by this library.
 */
KREUZBERGChunkingConfig *kreuzberg_extraction_config_chunking(const KREUZBERGExtractionConfig *ptr);

/**
 * Get the `content_filter` field from a `ExtractionConfig`.
 * # Safety
 * Pointer must be a valid handle returned by this library.
 */
KREUZBERGContentFilterConfig *kreuzberg_extraction_config_content_filter(const KREUZBERGExtractionConfig *ptr);

/**
 * Get the `images` field from a `ExtractionConfig`.
 * # Safety
 * Pointer must be a valid handle returned by this library.
 */
KREUZBERGImageExtractionConfig *kreuzberg_extraction_config_images(const KREUZBERGExtractionConfig *ptr);

/**
 * Get the `pdf_options` field from a `ExtractionConfig`.
 * # Safety
 * Pointer must be a valid handle returned by this library.
 */
KREUZBERGPdfConfig *kreuzberg_extraction_config_pdf_options(const KREUZBERGExtractionConfig *ptr);

/**
 * Get the `token_reduction` field from a `ExtractionConfig`.
 * # Safety
 * Pointer must be a valid handle returned by this library.
 */
KREUZBERGTokenReductionOptions *kreuzberg_extraction_config_token_reduction(const KREUZBERGExtractionConfig *ptr);

/**
 * Get the `language_detection` field from a `ExtractionConfig`.
 * # Safety
 * Pointer must be a valid handle returned by this library.
 */
KREUZBERGLanguageDetectionConfig *kreuzberg_extraction_config_language_detection(const KREUZBERGExtractionConfig *ptr);

/**
 * Get the `pages` field from a `ExtractionConfig`.
 * # Safety
 * Pointer must be a valid handle returned by this library.
 */
KREUZBERGPageConfig *kreuzberg_extraction_config_pages(const KREUZBERGExtractionConfig *ptr);

/**
 * Get the `keywords` field from a `ExtractionConfig`.
 * # Safety
 * Pointer must be a valid handle returned by this library.
 */
KREUZBERGKeywordConfig *kreuzberg_extraction_config_keywords(const KREUZBERGExtractionConfig *ptr);

/**
 * Get the `postprocessor` field from a `ExtractionConfig`.
 * # Safety
 * Pointer must be a valid handle returned by this library.
 */
KREUZBERGPostProcessorConfig *kreuzberg_extraction_config_postprocessor(const KREUZBERGExtractionConfig *ptr);

/**
 * Get the `html_output` field from a `ExtractionConfig`.
 * # Safety
 * Pointer must be a valid handle returned by this library.
 */
KREUZBERGHtmlOutputConfig *kreuzberg_extraction_config_html_output(const KREUZBERGExtractionConfig *ptr);

/**
 * Get the `extraction_timeout_secs` field from a `ExtractionConfig`.
 * # Safety
 * Pointer must be a valid handle returned by this library.
 */
uint64_t kreuzberg_extraction_config_extraction_timeout_secs(const KREUZBERGExtractionConfig *ptr);

/**
 * Get the `max_concurrent_extractions` field from a `ExtractionConfig`.
 * # Safety
 * Pointer must be a valid handle returned by this library.
 */
uintptr_t kreuzberg_extraction_config_max_concurrent_extractions(const KREUZBERGExtractionConfig *ptr);

/**
 * Get the `result_format` field from a `ExtractionConfig`.
 * # Safety
 * Pointer must be a valid handle returned by this library.
 */
KREUZBERGResultFormat *kreuzberg_extraction_config_result_format(const KREUZBERGExtractionConfig *ptr);

/**
 * Get the `security_limits` field from a `ExtractionConfig`.
 * # Safety
 * Pointer must be a valid handle returned by this library.
 */
KREUZBERGSecurityLimits *kreuzberg_extraction_config_security_limits(const KREUZBERGExtractionConfig *ptr);

/**
 * Get the `max_embedded_file_bytes` field from a `ExtractionConfig`.
 * # Safety
 * Pointer must be a valid handle returned by this library.
 */
uint64_t kreuzberg_extraction_config_max_embedded_file_bytes(const KREUZBERGExtractionConfig *ptr);

/**
 * Get the `output_format` field from a `ExtractionConfig`.
 * # Safety
 * Pointer must be a valid handle returned by this library.
 */
KREUZBERGOutputFormat *kreuzberg_extraction_config_output_format(const KREUZBERGExtractionConfig *ptr);

/**
 * Get the `layout` field from a `ExtractionConfig`.
 * # Safety
 * Pointer must be a valid handle returned by this library.
 */
KREUZBERGLayoutDetectionConfig *kreuzberg_extraction_config_layout(const KREUZBERGExtractionConfig *ptr);

/**
 * Get the `use_layout_for_markdown` field from a `ExtractionConfig`.
 * # Safety
 * Pointer must be a valid handle returned by this library.
 */
int32_t kreuzberg_extraction_config_use_layout_for_markdown(const KREUZBERGExtractionConfig *ptr);

/**
 * Get the `include_document_structure` field from a `ExtractionConfig`.
 * # Safety
 * Pointer must be a valid handle returned by this library.
 */
int32_t kreuzberg_extraction_config_include_document_structure(const KREUZBERGExtractionConfig *ptr);

/**
 * Get the `acceleration` field from a `ExtractionConfig`.
 * # Safety
 * Pointer must be a valid handle returned by this library.
 */
KREUZBERGAccelerationConfig *kreuzberg_extraction_config_acceleration(const KREUZBERGExtractionConfig *ptr);

/**
 * Get the `cache_namespace` field from a `ExtractionConfig`.
 * # Safety
 * Pointer must be a valid handle returned by this library.
 */
char *kreuzberg_extraction_config_cache_namespace(const KREUZBERGExtractionConfig *ptr);

/**
 * Get the `cache_ttl_secs` field from a `ExtractionConfig`.
 * # Safety
 * Pointer must be a valid handle returned by this library.
 */
uint64_t kreuzberg_extraction_config_cache_ttl_secs(const KREUZBERGExtractionConfig *ptr);

/**
 * Get the `email` field from a `ExtractionConfig`.
 * # Safety
 * Pointer must be a valid handle returned by this library.
 */
KREUZBERGEmailConfig *kreuzberg_extraction_config_email(const KREUZBERGExtractionConfig *ptr);

/**
 * Get the `max_archive_depth` field from a `ExtractionConfig`.
 * # Safety
 * Pointer must be a valid handle returned by this library.
 */
uintptr_t kreuzberg_extraction_config_max_archive_depth(const KREUZBERGExtractionConfig *ptr);

/**
 * Get the `tree_sitter` field from a `ExtractionConfig`.
 * # Safety
 * Pointer must be a valid handle returned by this library.
 */
KREUZBERGTreeSitterConfig *kreuzberg_extraction_config_tree_sitter(const KREUZBERGExtractionConfig *ptr);

/**
 * Get the `structured_extraction` field from a `ExtractionConfig`.
 * # Safety
 * Pointer must be a valid handle returned by this library.
 */
KREUZBERGStructuredExtractionConfig *kreuzberg_extraction_config_structured_extraction(const KREUZBERGExtractionConfig *ptr);

/**
 * \note SAFETY: Caller must ensure all pointer arguments are valid or null. Returned pointers must be
 * freed with the appropriate free function.
 */
KREUZBERGExtractionConfig *kreuzberg_extraction_config_default(void);

/**
 * Check if image processing is needed by examining OCR and image extraction settings.
 *
 * Returns `true` if either OCR is enabled or image extraction is configured,
 * indicating that image decompression and processing should occur.
 * Returns `false` if both are disabled, allowing optimization to skip unnecessary
 * image decompression for text-only extraction workflows.
 *
 * # Optimization Impact
 * For text-only extractions (no OCR, no image extraction), skipping image
 * decompression can improve CPU utilization by 5-10% by avoiding wasteful
 * image I/O and processing when results won't be used.
 * \note SAFETY: Caller must ensure all pointer arguments are valid or null. Returned pointers must be
 * freed with the appropriate free function.
 */
int32_t kreuzberg_extraction_config_needs_image_processing(const KREUZBERGExtractionConfig *this_);

/**
 * Create a `FileExtractionConfig` from a JSON string. Returns null on failure.
 * # Safety
 * JSON string must be valid UTF-8 and null-terminated.
 * Returned handle must be freed with `kreuzberg_file_extraction_config_free`.
 */
KREUZBERGFileExtractionConfig *kreuzberg_file_extraction_config_from_json(const char *json);

/**
 * Serialize a `FileExtractionConfig` to a JSON string. Returns null on failure.
 * # Safety
 * `ptr` must be a valid, non-null pointer returned by a `kreuzberg` function.
 * The returned string must be freed with `kreuzberg_free_string`.
 */
char *kreuzberg_file_extraction_config_to_json(const KREUZBERGFileExtractionConfig *ptr);

/**
 * Free a `FileExtractionConfig` handle.
 * # Safety
 * Pointer must have been returned by this library, or be null.
 */
void kreuzberg_file_extraction_config_free(KREUZBERGFileExtractionConfig *ptr);

/**
 * Get the `enable_quality_processing` field from a `FileExtractionConfig`.
 * # Safety
 * Pointer must be a valid handle returned by this library.
 */
int32_t kreuzberg_file_extraction_config_enable_quality_processing(const KREUZBERGFileExtractionConfig *ptr);

/**
 * Get the `ocr` field from a `FileExtractionConfig`.
 * # Safety
 * Pointer must be a valid handle returned by this library.
 */
KREUZBERGOcrConfig *kreuzberg_file_extraction_config_ocr(const KREUZBERGFileExtractionConfig *ptr);

/**
 * Get the `force_ocr` field from a `FileExtractionConfig`.
 * # Safety
 * Pointer must be a valid handle returned by this library.
 */
int32_t kreuzberg_file_extraction_config_force_ocr(const KREUZBERGFileExtractionConfig *ptr);

/**
 * Get the `force_ocr_pages` field from a `FileExtractionConfig`.
 * # Safety
 * Pointer must be a valid handle returned by this library.
 */
char *kreuzberg_file_extraction_config_force_ocr_pages(const KREUZBERGFileExtractionConfig *ptr);

/**
 * Get the `disable_ocr` field from a `FileExtractionConfig`.
 * # Safety
 * Pointer must be a valid handle returned by this library.
 */
int32_t kreuzberg_file_extraction_config_disable_ocr(const KREUZBERGFileExtractionConfig *ptr);

/**
 * Get the `chunking` field from a `FileExtractionConfig`.
 * # Safety
 * Pointer must be a valid handle returned by this library.
 */
KREUZBERGChunkingConfig *kreuzberg_file_extraction_config_chunking(const KREUZBERGFileExtractionConfig *ptr);

/**
 * Get the `content_filter` field from a `FileExtractionConfig`.
 * # Safety
 * Pointer must be a valid handle returned by this library.
 */
KREUZBERGContentFilterConfig *kreuzberg_file_extraction_config_content_filter(const KREUZBERGFileExtractionConfig *ptr);

/**
 * Get the `images` field from a `FileExtractionConfig`.
 * # Safety
 * Pointer must be a valid handle returned by this library.
 */
KREUZBERGImageExtractionConfig *kreuzberg_file_extraction_config_images(const KREUZBERGFileExtractionConfig *ptr);

/**
 * Get the `pdf_options` field from a `FileExtractionConfig`.
 * # Safety
 * Pointer must be a valid handle returned by this library.
 */
KREUZBERGPdfConfig *kreuzberg_file_extraction_config_pdf_options(const KREUZBERGFileExtractionConfig *ptr);

/**
 * Get the `token_reduction` field from a `FileExtractionConfig`.
 * # Safety
 * Pointer must be a valid handle returned by this library.
 */
KREUZBERGTokenReductionOptions *kreuzberg_file_extraction_config_token_reduction(const KREUZBERGFileExtractionConfig *ptr);

/**
 * Get the `language_detection` field from a `FileExtractionConfig`.
 * # Safety
 * Pointer must be a valid handle returned by this library.
 */
KREUZBERGLanguageDetectionConfig *kreuzberg_file_extraction_config_language_detection(const KREUZBERGFileExtractionConfig *ptr);

/**
 * Get the `pages` field from a `FileExtractionConfig`.
 * # Safety
 * Pointer must be a valid handle returned by this library.
 */
KREUZBERGPageConfig *kreuzberg_file_extraction_config_pages(const KREUZBERGFileExtractionConfig *ptr);

/**
 * Get the `keywords` field from a `FileExtractionConfig`.
 * # Safety
 * Pointer must be a valid handle returned by this library.
 */
KREUZBERGKeywordConfig *kreuzberg_file_extraction_config_keywords(const KREUZBERGFileExtractionConfig *ptr);

/**
 * Get the `postprocessor` field from a `FileExtractionConfig`.
 * # Safety
 * Pointer must be a valid handle returned by this library.
 */
KREUZBERGPostProcessorConfig *kreuzberg_file_extraction_config_postprocessor(const KREUZBERGFileExtractionConfig *ptr);

/**
 * Get the `result_format` field from a `FileExtractionConfig`.
 * # Safety
 * Pointer must be a valid handle returned by this library.
 */
KREUZBERGResultFormat *kreuzberg_file_extraction_config_result_format(const KREUZBERGFileExtractionConfig *ptr);

/**
 * Get the `output_format` field from a `FileExtractionConfig`.
 * # Safety
 * Pointer must be a valid handle returned by this library.
 */
KREUZBERGOutputFormat *kreuzberg_file_extraction_config_output_format(const KREUZBERGFileExtractionConfig *ptr);

/**
 * Get the `include_document_structure` field from a `FileExtractionConfig`.
 * # Safety
 * Pointer must be a valid handle returned by this library.
 */
int32_t kreuzberg_file_extraction_config_include_document_structure(const KREUZBERGFileExtractionConfig *ptr);

/**
 * Get the `layout` field from a `FileExtractionConfig`.
 * # Safety
 * Pointer must be a valid handle returned by this library.
 */
KREUZBERGLayoutDetectionConfig *kreuzberg_file_extraction_config_layout(const KREUZBERGFileExtractionConfig *ptr);

/**
 * Get the `timeout_secs` field from a `FileExtractionConfig`.
 * # Safety
 * Pointer must be a valid handle returned by this library.
 */
uint64_t kreuzberg_file_extraction_config_timeout_secs(const KREUZBERGFileExtractionConfig *ptr);

/**
 * Get the `tree_sitter` field from a `FileExtractionConfig`.
 * # Safety
 * Pointer must be a valid handle returned by this library.
 */
KREUZBERGTreeSitterConfig *kreuzberg_file_extraction_config_tree_sitter(const KREUZBERGFileExtractionConfig *ptr);

/**
 * Get the `structured_extraction` field from a `FileExtractionConfig`.
 * # Safety
 * Pointer must be a valid handle returned by this library.
 */
KREUZBERGStructuredExtractionConfig *kreuzberg_file_extraction_config_structured_extraction(const KREUZBERGFileExtractionConfig *ptr);

/**
 * Create a `BatchBytesItem` from a JSON string. Returns null on failure.
 * # Safety
 * JSON string must be valid UTF-8 and null-terminated.
 * Returned handle must be freed with `kreuzberg_batch_bytes_item_free`.
 */
KREUZBERGBatchBytesItem *kreuzberg_batch_bytes_item_from_json(const char *json);

/**
 * Serialize a `BatchBytesItem` to a JSON string. Returns null on failure.
 * # Safety
 * `ptr` must be a valid, non-null pointer returned by a `kreuzberg` function.
 * The returned string must be freed with `kreuzberg_free_string`.
 */
char *kreuzberg_batch_bytes_item_to_json(const KREUZBERGBatchBytesItem *ptr);

/**
 * Free a `BatchBytesItem` handle.
 * # Safety
 * Pointer must have been returned by this library, or be null.
 */
void kreuzberg_batch_bytes_item_free(KREUZBERGBatchBytesItem *ptr);

/**
 * Get the `content` field from a `BatchBytesItem`.
 * # Safety
 * Pointer must be a valid handle returned by this library.
 */
uint8_t *kreuzberg_batch_bytes_item_content(const KREUZBERGBatchBytesItem *ptr,
                                            uintptr_t *out_len);

/**
 * Get the `mime_type` field from a `BatchBytesItem`.
 * # Safety
 * Pointer must be a valid handle returned by this library.
 */
char *kreuzberg_batch_bytes_item_mime_type(const KREUZBERGBatchBytesItem *ptr);

/**
 * Get the `config` field from a `BatchBytesItem`.
 * # Safety
 * Pointer must be a valid handle returned by this library.
 */
KREUZBERGFileExtractionConfig *kreuzberg_batch_bytes_item_config(const KREUZBERGBatchBytesItem *ptr);

/**
 * Create a `BatchFileItem` from a JSON string. Returns null on failure.
 * # Safety
 * JSON string must be valid UTF-8 and null-terminated.
 * Returned handle must be freed with `kreuzberg_batch_file_item_free`.
 */
KREUZBERGBatchFileItem *kreuzberg_batch_file_item_from_json(const char *json);

/**
 * Serialize a `BatchFileItem` to a JSON string. Returns null on failure.
 * # Safety
 * `ptr` must be a valid, non-null pointer returned by a `kreuzberg` function.
 * The returned string must be freed with `kreuzberg_free_string`.
 */
char *kreuzberg_batch_file_item_to_json(const KREUZBERGBatchFileItem *ptr);

/**
 * Free a `BatchFileItem` handle.
 * # Safety
 * Pointer must have been returned by this library, or be null.
 */
void kreuzberg_batch_file_item_free(KREUZBERGBatchFileItem *ptr);

/**
 * Get the `path` field from a `BatchFileItem`.
 * # Safety
 * Pointer must be a valid handle returned by this library.
 */
char *kreuzberg_batch_file_item_path(const KREUZBERGBatchFileItem *ptr);

/**
 * Get the `config` field from a `BatchFileItem`.
 * # Safety
 * Pointer must be a valid handle returned by this library.
 */
KREUZBERGFileExtractionConfig *kreuzberg_batch_file_item_config(const KREUZBERGBatchFileItem *ptr);

/**
 * Create a `ImageExtractionConfig` from a JSON string. Returns null on failure.
 * # Safety
 * JSON string must be valid UTF-8 and null-terminated.
 * Returned handle must be freed with `kreuzberg_image_extraction_config_free`.
 */
KREUZBERGImageExtractionConfig *kreuzberg_image_extraction_config_from_json(const char *json);

/**
 * Serialize a `ImageExtractionConfig` to a JSON string. Returns null on failure.
 * # Safety
 * `ptr` must be a valid, non-null pointer returned by a `kreuzberg` function.
 * The returned string must be freed with `kreuzberg_free_string`.
 */
char *kreuzberg_image_extraction_config_to_json(const KREUZBERGImageExtractionConfig *ptr);

/**
 * Free a `ImageExtractionConfig` handle.
 * # Safety
 * Pointer must have been returned by this library, or be null.
 */
void kreuzberg_image_extraction_config_free(KREUZBERGImageExtractionConfig *ptr);

/**
 * Get the `extract_images` field from a `ImageExtractionConfig`.
 * # Safety
 * Pointer must be a valid handle returned by this library.
 */
int32_t kreuzberg_image_extraction_config_extract_images(const KREUZBERGImageExtractionConfig *ptr);

/**
 * Get the `target_dpi` field from a `ImageExtractionConfig`.
 * # Safety
 * Pointer must be a valid handle returned by this library.
 */
int32_t kreuzberg_image_extraction_config_target_dpi(const KREUZBERGImageExtractionConfig *ptr);

/**
 * Get the `max_image_dimension` field from a `ImageExtractionConfig`.
 * # Safety
 * Pointer must be a valid handle returned by this library.
 */
int32_t kreuzberg_image_extraction_config_max_image_dimension(const KREUZBERGImageExtractionConfig *ptr);

/**
 * Get the `inject_placeholders` field from a `ImageExtractionConfig`.
 * # Safety
 * Pointer must be a valid handle returned by this library.
 */
int32_t kreuzberg_image_extraction_config_inject_placeholders(const KREUZBERGImageExtractionConfig *ptr);

/**
 * Get the `auto_adjust_dpi` field from a `ImageExtractionConfig`.
 * # Safety
 * Pointer must be a valid handle returned by this library.
 */
int32_t kreuzberg_image_extraction_config_auto_adjust_dpi(const KREUZBERGImageExtractionConfig *ptr);

/**
 * Get the `min_dpi` field from a `ImageExtractionConfig`.
 * # Safety
 * Pointer must be a valid handle returned by this library.
 */
int32_t kreuzberg_image_extraction_config_min_dpi(const KREUZBERGImageExtractionConfig *ptr);

/**
 * Get the `max_dpi` field from a `ImageExtractionConfig`.
 * # Safety
 * Pointer must be a valid handle returned by this library.
 */
int32_t kreuzberg_image_extraction_config_max_dpi(const KREUZBERGImageExtractionConfig *ptr);

/**
 * Get the `max_images_per_page` field from a `ImageExtractionConfig`.
 * # Safety
 * Pointer must be a valid handle returned by this library.
 */
uint32_t kreuzberg_image_extraction_config_max_images_per_page(const KREUZBERGImageExtractionConfig *ptr);

/**
 * Get the `classify` field from a `ImageExtractionConfig`.
 * # Safety
 * Pointer must be a valid handle returned by this library.
 */
int32_t kreuzberg_image_extraction_config_classify(const KREUZBERGImageExtractionConfig *ptr);

/**
 * Get the `include_page_rasters` field from a `ImageExtractionConfig`.
 * # Safety
 * Pointer must be a valid handle returned by this library.
 */
int32_t kreuzberg_image_extraction_config_include_page_rasters(const KREUZBERGImageExtractionConfig *ptr);

/**
 * Get the `run_ocr_on_images` field from a `ImageExtractionConfig`.
 * # Safety
 * Pointer must be a valid handle returned by this library.
 */
int32_t kreuzberg_image_extraction_config_run_ocr_on_images(const KREUZBERGImageExtractionConfig *ptr);

/**
 * Get the `ocr_text_only` field from a `ImageExtractionConfig`.
 * # Safety
 * Pointer must be a valid handle returned by this library.
 */
int32_t kreuzberg_image_extraction_config_ocr_text_only(const KREUZBERGImageExtractionConfig *ptr);

/**
 * Get the `append_ocr_text` field from a `ImageExtractionConfig`.
 * # Safety
 * Pointer must be a valid handle returned by this library.
 */
int32_t kreuzberg_image_extraction_config_append_ocr_text(const KREUZBERGImageExtractionConfig *ptr);

/**
 * \note SAFETY: Caller must ensure all pointer arguments are valid or null. Returned pointers must be
 * freed with the appropriate free function.
 */
KREUZBERGImageExtractionConfig *kreuzberg_image_extraction_config_default(void);

/**
 * Create a `TokenReductionOptions` from a JSON string. Returns null on failure.
 * # Safety
 * JSON string must be valid UTF-8 and null-terminated.
 * Returned handle must be freed with `kreuzberg_token_reduction_options_free`.
 */
KREUZBERGTokenReductionOptions *kreuzberg_token_reduction_options_from_json(const char *json);

/**
 * Serialize a `TokenReductionOptions` to a JSON string. Returns null on failure.
 * # Safety
 * `ptr` must be a valid, non-null pointer returned by a `kreuzberg` function.
 * The returned string must be freed with `kreuzberg_free_string`.
 */
char *kreuzberg_token_reduction_options_to_json(const KREUZBERGTokenReductionOptions *ptr);

/**
 * Free a `TokenReductionOptions` handle.
 * # Safety
 * Pointer must have been returned by this library, or be null.
 */
void kreuzberg_token_reduction_options_free(KREUZBERGTokenReductionOptions *ptr);

/**
 * Get the `mode` field from a `TokenReductionOptions`.
 * # Safety
 * Pointer must be a valid handle returned by this library.
 */
char *kreuzberg_token_reduction_options_mode(const KREUZBERGTokenReductionOptions *ptr);

/**
 * Get the `preserve_important_words` field from a `TokenReductionOptions`.
 * # Safety
 * Pointer must be a valid handle returned by this library.
 */
int32_t kreuzberg_token_reduction_options_preserve_important_words(const KREUZBERGTokenReductionOptions *ptr);

/**
 * \note SAFETY: Caller must ensure all pointer arguments are valid or null. Returned pointers must be
 * freed with the appropriate free function.
 */
KREUZBERGTokenReductionOptions *kreuzberg_token_reduction_options_default(void);

/**
 * Create a `LanguageDetectionConfig` from a JSON string. Returns null on failure.
 * # Safety
 * JSON string must be valid UTF-8 and null-terminated.
 * Returned handle must be freed with `kreuzberg_language_detection_config_free`.
 */
KREUZBERGLanguageDetectionConfig *kreuzberg_language_detection_config_from_json(const char *json);

/**
 * Serialize a `LanguageDetectionConfig` to a JSON string. Returns null on failure.
 * # Safety
 * `ptr` must be a valid, non-null pointer returned by a `kreuzberg` function.
 * The returned string must be freed with `kreuzberg_free_string`.
 */
char *kreuzberg_language_detection_config_to_json(const KREUZBERGLanguageDetectionConfig *ptr);

/**
 * Free a `LanguageDetectionConfig` handle.
 * # Safety
 * Pointer must have been returned by this library, or be null.
 */
void kreuzberg_language_detection_config_free(KREUZBERGLanguageDetectionConfig *ptr);

/**
 * Get the `enabled` field from a `LanguageDetectionConfig`.
 * # Safety
 * Pointer must be a valid handle returned by this library.
 */
int32_t kreuzberg_language_detection_config_enabled(const KREUZBERGLanguageDetectionConfig *ptr);

/**
 * Get the `min_confidence` field from a `LanguageDetectionConfig`.
 * # Safety
 * Pointer must be a valid handle returned by this library.
 */
double kreuzberg_language_detection_config_min_confidence(const KREUZBERGLanguageDetectionConfig *ptr);

/**
 * Get the `detect_multiple` field from a `LanguageDetectionConfig`.
 * # Safety
 * Pointer must be a valid handle returned by this library.
 */
int32_t kreuzberg_language_detection_config_detect_multiple(const KREUZBERGLanguageDetectionConfig *ptr);

/**
 * \note SAFETY: Caller must ensure all pointer arguments are valid or null. Returned pointers must be
 * freed with the appropriate free function.
 */
KREUZBERGLanguageDetectionConfig *kreuzberg_language_detection_config_default(void);

/**
 * Create a `HtmlOutputConfig` from a JSON string. Returns null on failure.
 * # Safety
 * JSON string must be valid UTF-8 and null-terminated.
 * Returned handle must be freed with `kreuzberg_html_output_config_free`.
 */
KREUZBERGHtmlOutputConfig *kreuzberg_html_output_config_from_json(const char *json);

/**
 * Serialize a `HtmlOutputConfig` to a JSON string. Returns null on failure.
 * # Safety
 * `ptr` must be a valid, non-null pointer returned by a `kreuzberg` function.
 * The returned string must be freed with `kreuzberg_free_string`.
 */
char *kreuzberg_html_output_config_to_json(const KREUZBERGHtmlOutputConfig *ptr);

/**
 * Free a `HtmlOutputConfig` handle.
 * # Safety
 * Pointer must have been returned by this library, or be null.
 */
void kreuzberg_html_output_config_free(KREUZBERGHtmlOutputConfig *ptr);

/**
 * Get the `css` field from a `HtmlOutputConfig`.
 * # Safety
 * Pointer must be a valid handle returned by this library.
 */
char *kreuzberg_html_output_config_css(const KREUZBERGHtmlOutputConfig *ptr);

/**
 * Get the `css_file` field from a `HtmlOutputConfig`.
 * # Safety
 * Pointer must be a valid handle returned by this library.
 */
char *kreuzberg_html_output_config_css_file(const KREUZBERGHtmlOutputConfig *ptr);

/**
 * Get the `theme` field from a `HtmlOutputConfig`.
 * # Safety
 * Pointer must be a valid handle returned by this library.
 */
KREUZBERGHtmlTheme *kreuzberg_html_output_config_theme(const KREUZBERGHtmlOutputConfig *ptr);

/**
 * Get the `class_prefix` field from a `HtmlOutputConfig`.
 * # Safety
 * Pointer must be a valid handle returned by this library.
 */
char *kreuzberg_html_output_config_class_prefix(const KREUZBERGHtmlOutputConfig *ptr);

/**
 * Get the `embed_css` field from a `HtmlOutputConfig`.
 * # Safety
 * Pointer must be a valid handle returned by this library.
 */
int32_t kreuzberg_html_output_config_embed_css(const KREUZBERGHtmlOutputConfig *ptr);

/**
 * \note SAFETY: Caller must ensure all pointer arguments are valid or null. Returned pointers must be
 * freed with the appropriate free function.
 */
KREUZBERGHtmlOutputConfig *kreuzberg_html_output_config_default(void);

/**
 * Create a `LayoutDetectionConfig` from a JSON string. Returns null on failure.
 * # Safety
 * JSON string must be valid UTF-8 and null-terminated.
 * Returned handle must be freed with `kreuzberg_layout_detection_config_free`.
 */
KREUZBERGLayoutDetectionConfig *kreuzberg_layout_detection_config_from_json(const char *json);

/**
 * Serialize a `LayoutDetectionConfig` to a JSON string. Returns null on failure.
 * # Safety
 * `ptr` must be a valid, non-null pointer returned by a `kreuzberg` function.
 * The returned string must be freed with `kreuzberg_free_string`.
 */
char *kreuzberg_layout_detection_config_to_json(const KREUZBERGLayoutDetectionConfig *ptr);

/**
 * Free a `LayoutDetectionConfig` handle.
 * # Safety
 * Pointer must have been returned by this library, or be null.
 */
void kreuzberg_layout_detection_config_free(KREUZBERGLayoutDetectionConfig *ptr);

/**
 * Get the `confidence_threshold` field from a `LayoutDetectionConfig`.
 * # Safety
 * Pointer must be a valid handle returned by this library.
 */
float kreuzberg_layout_detection_config_confidence_threshold(const KREUZBERGLayoutDetectionConfig *ptr);

/**
 * Get the `apply_heuristics` field from a `LayoutDetectionConfig`.
 * # Safety
 * Pointer must be a valid handle returned by this library.
 */
int32_t kreuzberg_layout_detection_config_apply_heuristics(const KREUZBERGLayoutDetectionConfig *ptr);

/**
 * Get the `table_model` field from a `LayoutDetectionConfig`.
 * # Safety
 * Pointer must be a valid handle returned by this library.
 */
KREUZBERGTableModel *kreuzberg_layout_detection_config_table_model(const KREUZBERGLayoutDetectionConfig *ptr);

/**
 * Get the `acceleration` field from a `LayoutDetectionConfig`.
 * # Safety
 * Pointer must be a valid handle returned by this library.
 */
KREUZBERGAccelerationConfig *kreuzberg_layout_detection_config_acceleration(const KREUZBERGLayoutDetectionConfig *ptr);

/**
 * \note SAFETY: Caller must ensure all pointer arguments are valid or null. Returned pointers must be
 * freed with the appropriate free function.
 */
KREUZBERGLayoutDetectionConfig *kreuzberg_layout_detection_config_default(void);

/**
 * Create a `LlmConfig` from a JSON string. Returns null on failure.
 * # Safety
 * JSON string must be valid UTF-8 and null-terminated.
 * Returned handle must be freed with `kreuzberg_llm_config_free`.
 */
KREUZBERGLlmConfig *kreuzberg_llm_config_from_json(const char *json);

/**
 * Serialize a `LlmConfig` to a JSON string. Returns null on failure.
 * # Safety
 * `ptr` must be a valid, non-null pointer returned by a `kreuzberg` function.
 * The returned string must be freed with `kreuzberg_free_string`.
 */
char *kreuzberg_llm_config_to_json(const KREUZBERGLlmConfig *ptr);

/**
 * Free a `LlmConfig` handle.
 * # Safety
 * Pointer must have been returned by this library, or be null.
 */
void kreuzberg_llm_config_free(KREUZBERGLlmConfig *ptr);

/**
 * Get the `model` field from a `LlmConfig`.
 * # Safety
 * Pointer must be a valid handle returned by this library.
 */
char *kreuzberg_llm_config_model(const KREUZBERGLlmConfig *ptr);

/**
 * Get the `api_key` field from a `LlmConfig`.
 * # Safety
 * Pointer must be a valid handle returned by this library.
 */
char *kreuzberg_llm_config_api_key(const KREUZBERGLlmConfig *ptr);

/**
 * Get the `base_url` field from a `LlmConfig`.
 * # Safety
 * Pointer must be a valid handle returned by this library.
 */
char *kreuzberg_llm_config_base_url(const KREUZBERGLlmConfig *ptr);

/**
 * Get the `timeout_secs` field from a `LlmConfig`.
 * # Safety
 * Pointer must be a valid handle returned by this library.
 */
uint64_t kreuzberg_llm_config_timeout_secs(const KREUZBERGLlmConfig *ptr);

/**
 * Get the `max_retries` field from a `LlmConfig`.
 * # Safety
 * Pointer must be a valid handle returned by this library.
 */
uint32_t kreuzberg_llm_config_max_retries(const KREUZBERGLlmConfig *ptr);

/**
 * Get the `temperature` field from a `LlmConfig`.
 * # Safety
 * Pointer must be a valid handle returned by this library.
 */
double kreuzberg_llm_config_temperature(const KREUZBERGLlmConfig *ptr);

/**
 * Get the `max_tokens` field from a `LlmConfig`.
 * # Safety
 * Pointer must be a valid handle returned by this library.
 */
uint64_t kreuzberg_llm_config_max_tokens(const KREUZBERGLlmConfig *ptr);

/**
 * Create a `StructuredExtractionConfig` from a JSON string. Returns null on failure.
 * # Safety
 * JSON string must be valid UTF-8 and null-terminated.
 * Returned handle must be freed with `kreuzberg_structured_extraction_config_free`.
 */
KREUZBERGStructuredExtractionConfig *kreuzberg_structured_extraction_config_from_json(const char *json);

/**
 * Serialize a `StructuredExtractionConfig` to a JSON string. Returns null on failure.
 * # Safety
 * `ptr` must be a valid, non-null pointer returned by a `kreuzberg` function.
 * The returned string must be freed with `kreuzberg_free_string`.
 */
char *kreuzberg_structured_extraction_config_to_json(const KREUZBERGStructuredExtractionConfig *ptr);

/**
 * Free a `StructuredExtractionConfig` handle.
 * # Safety
 * Pointer must have been returned by this library, or be null.
 */
void kreuzberg_structured_extraction_config_free(KREUZBERGStructuredExtractionConfig *ptr);

/**
 * Get the `schema` field from a `StructuredExtractionConfig`.
 * # Safety
 * Pointer must be a valid handle returned by this library.
 */
char *kreuzberg_structured_extraction_config_schema(const KREUZBERGStructuredExtractionConfig *ptr);

/**
 * Get the `schema_name` field from a `StructuredExtractionConfig`.
 * # Safety
 * Pointer must be a valid handle returned by this library.
 */
char *kreuzberg_structured_extraction_config_schema_name(const KREUZBERGStructuredExtractionConfig *ptr);

/**
 * Get the `schema_description` field from a `StructuredExtractionConfig`.
 * # Safety
 * Pointer must be a valid handle returned by this library.
 */
char *kreuzberg_structured_extraction_config_schema_description(const KREUZBERGStructuredExtractionConfig *ptr);

/**
 * Get the `strict` field from a `StructuredExtractionConfig`.
 * # Safety
 * Pointer must be a valid handle returned by this library.
 */
int32_t kreuzberg_structured_extraction_config_strict(const KREUZBERGStructuredExtractionConfig *ptr);

/**
 * Get the `prompt` field from a `StructuredExtractionConfig`.
 * # Safety
 * Pointer must be a valid handle returned by this library.
 */
char *kreuzberg_structured_extraction_config_prompt(const KREUZBERGStructuredExtractionConfig *ptr);

/**
 * Get the `llm` field from a `StructuredExtractionConfig`.
 * # Safety
 * Pointer must be a valid handle returned by this library.
 */
KREUZBERGLlmConfig *kreuzberg_structured_extraction_config_llm(const KREUZBERGStructuredExtractionConfig *ptr);

/**
 * Create a `OcrQualityThresholds` from a JSON string. Returns null on failure.
 * # Safety
 * JSON string must be valid UTF-8 and null-terminated.
 * Returned handle must be freed with `kreuzberg_ocr_quality_thresholds_free`.
 */
KREUZBERGOcrQualityThresholds *kreuzberg_ocr_quality_thresholds_from_json(const char *json);

/**
 * Serialize a `OcrQualityThresholds` to a JSON string. Returns null on failure.
 * # Safety
 * `ptr` must be a valid, non-null pointer returned by a `kreuzberg` function.
 * The returned string must be freed with `kreuzberg_free_string`.
 */
char *kreuzberg_ocr_quality_thresholds_to_json(const KREUZBERGOcrQualityThresholds *ptr);

/**
 * Free a `OcrQualityThresholds` handle.
 * # Safety
 * Pointer must have been returned by this library, or be null.
 */
void kreuzberg_ocr_quality_thresholds_free(KREUZBERGOcrQualityThresholds *ptr);

/**
 * Get the `min_total_non_whitespace` field from a `OcrQualityThresholds`.
 * # Safety
 * Pointer must be a valid handle returned by this library.
 */
uintptr_t kreuzberg_ocr_quality_thresholds_min_total_non_whitespace(const KREUZBERGOcrQualityThresholds *ptr);

/**
 * Get the `min_non_whitespace_per_page` field from a `OcrQualityThresholds`.
 * # Safety
 * Pointer must be a valid handle returned by this library.
 */
double kreuzberg_ocr_quality_thresholds_min_non_whitespace_per_page(const KREUZBERGOcrQualityThresholds *ptr);

/**
 * Get the `min_meaningful_word_len` field from a `OcrQualityThresholds`.
 * # Safety
 * Pointer must be a valid handle returned by this library.
 */
uintptr_t kreuzberg_ocr_quality_thresholds_min_meaningful_word_len(const KREUZBERGOcrQualityThresholds *ptr);

/**
 * Get the `min_meaningful_words` field from a `OcrQualityThresholds`.
 * # Safety
 * Pointer must be a valid handle returned by this library.
 */
uintptr_t kreuzberg_ocr_quality_thresholds_min_meaningful_words(const KREUZBERGOcrQualityThresholds *ptr);

/**
 * Get the `min_alnum_ratio` field from a `OcrQualityThresholds`.
 * # Safety
 * Pointer must be a valid handle returned by this library.
 */
double kreuzberg_ocr_quality_thresholds_min_alnum_ratio(const KREUZBERGOcrQualityThresholds *ptr);

/**
 * Get the `min_garbage_chars` field from a `OcrQualityThresholds`.
 * # Safety
 * Pointer must be a valid handle returned by this library.
 */
uintptr_t kreuzberg_ocr_quality_thresholds_min_garbage_chars(const KREUZBERGOcrQualityThresholds *ptr);

/**
 * Get the `max_fragmented_word_ratio` field from a `OcrQualityThresholds`.
 * # Safety
 * Pointer must be a valid handle returned by this library.
 */
double kreuzberg_ocr_quality_thresholds_max_fragmented_word_ratio(const KREUZBERGOcrQualityThresholds *ptr);

/**
 * Get the `critical_fragmented_word_ratio` field from a `OcrQualityThresholds`.
 * # Safety
 * Pointer must be a valid handle returned by this library.
 */
double kreuzberg_ocr_quality_thresholds_critical_fragmented_word_ratio(const KREUZBERGOcrQualityThresholds *ptr);

/**
 * Get the `min_avg_word_length` field from a `OcrQualityThresholds`.
 * # Safety
 * Pointer must be a valid handle returned by this library.
 */
double kreuzberg_ocr_quality_thresholds_min_avg_word_length(const KREUZBERGOcrQualityThresholds *ptr);

/**
 * Get the `min_words_for_avg_length_check` field from a `OcrQualityThresholds`.
 * # Safety
 * Pointer must be a valid handle returned by this library.
 */
uintptr_t kreuzberg_ocr_quality_thresholds_min_words_for_avg_length_check(const KREUZBERGOcrQualityThresholds *ptr);

/**
 * Get the `min_consecutive_repeat_ratio` field from a `OcrQualityThresholds`.
 * # Safety
 * Pointer must be a valid handle returned by this library.
 */
double kreuzberg_ocr_quality_thresholds_min_consecutive_repeat_ratio(const KREUZBERGOcrQualityThresholds *ptr);

/**
 * Get the `min_words_for_repeat_check` field from a `OcrQualityThresholds`.
 * # Safety
 * Pointer must be a valid handle returned by this library.
 */
uintptr_t kreuzberg_ocr_quality_thresholds_min_words_for_repeat_check(const KREUZBERGOcrQualityThresholds *ptr);

/**
 * Get the `substantive_min_chars` field from a `OcrQualityThresholds`.
 * # Safety
 * Pointer must be a valid handle returned by this library.
 */
uintptr_t kreuzberg_ocr_quality_thresholds_substantive_min_chars(const KREUZBERGOcrQualityThresholds *ptr);

/**
 * Get the `non_text_min_chars` field from a `OcrQualityThresholds`.
 * # Safety
 * Pointer must be a valid handle returned by this library.
 */
uintptr_t kreuzberg_ocr_quality_thresholds_non_text_min_chars(const KREUZBERGOcrQualityThresholds *ptr);

/**
 * Get the `alnum_ws_ratio_threshold` field from a `OcrQualityThresholds`.
 * # Safety
 * Pointer must be a valid handle returned by this library.
 */
double kreuzberg_ocr_quality_thresholds_alnum_ws_ratio_threshold(const KREUZBERGOcrQualityThresholds *ptr);

/**
 * Get the `pipeline_min_quality` field from a `OcrQualityThresholds`.
 * # Safety
 * Pointer must be a valid handle returned by this library.
 */
double kreuzberg_ocr_quality_thresholds_pipeline_min_quality(const KREUZBERGOcrQualityThresholds *ptr);

/**
 * \note SAFETY: Caller must ensure all pointer arguments are valid or null. Returned pointers must be
 * freed with the appropriate free function.
 */
KREUZBERGOcrQualityThresholds *kreuzberg_ocr_quality_thresholds_default(void);

/**
 * Create a `OcrPipelineStage` from a JSON string. Returns null on failure.
 * # Safety
 * JSON string must be valid UTF-8 and null-terminated.
 * Returned handle must be freed with `kreuzberg_ocr_pipeline_stage_free`.
 */
KREUZBERGOcrPipelineStage *kreuzberg_ocr_pipeline_stage_from_json(const char *json);

/**
 * Serialize a `OcrPipelineStage` to a JSON string. Returns null on failure.
 * # Safety
 * `ptr` must be a valid, non-null pointer returned by a `kreuzberg` function.
 * The returned string must be freed with `kreuzberg_free_string`.
 */
char *kreuzberg_ocr_pipeline_stage_to_json(const KREUZBERGOcrPipelineStage *ptr);

/**
 * Free a `OcrPipelineStage` handle.
 * # Safety
 * Pointer must have been returned by this library, or be null.
 */
void kreuzberg_ocr_pipeline_stage_free(KREUZBERGOcrPipelineStage *ptr);

/**
 * Get the `backend` field from a `OcrPipelineStage`.
 * # Safety
 * Pointer must be a valid handle returned by this library.
 */
char *kreuzberg_ocr_pipeline_stage_backend(const KREUZBERGOcrPipelineStage *ptr);

/**
 * Get the `priority` field from a `OcrPipelineStage`.
 * # Safety
 * Pointer must be a valid handle returned by this library.
 */
uint32_t kreuzberg_ocr_pipeline_stage_priority(const KREUZBERGOcrPipelineStage *ptr);

/**
 * Get the `language` field from a `OcrPipelineStage`.
 * # Safety
 * Pointer must be a valid handle returned by this library.
 */
char *kreuzberg_ocr_pipeline_stage_language(const KREUZBERGOcrPipelineStage *ptr);

/**
 * Get the `tesseract_config` field from a `OcrPipelineStage`.
 * # Safety
 * Pointer must be a valid handle returned by this library.
 */
KREUZBERGTesseractConfig *kreuzberg_ocr_pipeline_stage_tesseract_config(const KREUZBERGOcrPipelineStage *ptr);

/**
 * Get the `paddle_ocr_config` field from a `OcrPipelineStage`.
 * # Safety
 * Pointer must be a valid handle returned by this library.
 */
char *kreuzberg_ocr_pipeline_stage_paddle_ocr_config(const KREUZBERGOcrPipelineStage *ptr);

/**
 * Get the `vlm_config` field from a `OcrPipelineStage`.
 * # Safety
 * Pointer must be a valid handle returned by this library.
 */
KREUZBERGLlmConfig *kreuzberg_ocr_pipeline_stage_vlm_config(const KREUZBERGOcrPipelineStage *ptr);

/**
 * Get the `backend_options` field from a `OcrPipelineStage`.
 * # Safety
 * Pointer must be a valid handle returned by this library.
 */
char *kreuzberg_ocr_pipeline_stage_backend_options(const KREUZBERGOcrPipelineStage *ptr);

/**
 * Create a `OcrPipelineConfig` from a JSON string. Returns null on failure.
 * # Safety
 * JSON string must be valid UTF-8 and null-terminated.
 * Returned handle must be freed with `kreuzberg_ocr_pipeline_config_free`.
 */
KREUZBERGOcrPipelineConfig *kreuzberg_ocr_pipeline_config_from_json(const char *json);

/**
 * Serialize a `OcrPipelineConfig` to a JSON string. Returns null on failure.
 * # Safety
 * `ptr` must be a valid, non-null pointer returned by a `kreuzberg` function.
 * The returned string must be freed with `kreuzberg_free_string`.
 */
char *kreuzberg_ocr_pipeline_config_to_json(const KREUZBERGOcrPipelineConfig *ptr);

/**
 * Free a `OcrPipelineConfig` handle.
 * # Safety
 * Pointer must have been returned by this library, or be null.
 */
void kreuzberg_ocr_pipeline_config_free(KREUZBERGOcrPipelineConfig *ptr);

/**
 * Get the `stages` field from a `OcrPipelineConfig`.
 * # Safety
 * Pointer must be a valid handle returned by this library.
 */
char *kreuzberg_ocr_pipeline_config_stages(const KREUZBERGOcrPipelineConfig *ptr);

/**
 * Get the `quality_thresholds` field from a `OcrPipelineConfig`.
 * # Safety
 * Pointer must be a valid handle returned by this library.
 */
KREUZBERGOcrQualityThresholds *kreuzberg_ocr_pipeline_config_quality_thresholds(const KREUZBERGOcrPipelineConfig *ptr);

/**
 * Create a `OcrConfig` from a JSON string. Returns null on failure.
 * # Safety
 * JSON string must be valid UTF-8 and null-terminated.
 * Returned handle must be freed with `kreuzberg_ocr_config_free`.
 */
KREUZBERGOcrConfig *kreuzberg_ocr_config_from_json(const char *json);

/**
 * Serialize a `OcrConfig` to a JSON string. Returns null on failure.
 * # Safety
 * `ptr` must be a valid, non-null pointer returned by a `kreuzberg` function.
 * The returned string must be freed with `kreuzberg_free_string`.
 */
char *kreuzberg_ocr_config_to_json(const KREUZBERGOcrConfig *ptr);

/**
 * Free a `OcrConfig` handle.
 * # Safety
 * Pointer must have been returned by this library, or be null.
 */
void kreuzberg_ocr_config_free(KREUZBERGOcrConfig *ptr);

/**
 * Get the `enabled` field from a `OcrConfig`.
 * # Safety
 * Pointer must be a valid handle returned by this library.
 */
int32_t kreuzberg_ocr_config_enabled(const KREUZBERGOcrConfig *ptr);

/**
 * Get the `backend` field from a `OcrConfig`.
 * # Safety
 * Pointer must be a valid handle returned by this library.
 */
char *kreuzberg_ocr_config_backend(const KREUZBERGOcrConfig *ptr);

/**
 * Get the `language` field from a `OcrConfig`.
 * # Safety
 * Pointer must be a valid handle returned by this library.
 */
char *kreuzberg_ocr_config_language(const KREUZBERGOcrConfig *ptr);

/**
 * Get the `tesseract_config` field from a `OcrConfig`.
 * # Safety
 * Pointer must be a valid handle returned by this library.
 */
KREUZBERGTesseractConfig *kreuzberg_ocr_config_tesseract_config(const KREUZBERGOcrConfig *ptr);

/**
 * Get the `output_format` field from a `OcrConfig`.
 * # Safety
 * Pointer must be a valid handle returned by this library.
 */
KREUZBERGOutputFormat *kreuzberg_ocr_config_output_format(const KREUZBERGOcrConfig *ptr);

/**
 * Get the `paddle_ocr_config` field from a `OcrConfig`.
 * # Safety
 * Pointer must be a valid handle returned by this library.
 */
char *kreuzberg_ocr_config_paddle_ocr_config(const KREUZBERGOcrConfig *ptr);

/**
 * Get the `backend_options` field from a `OcrConfig`.
 * # Safety
 * Pointer must be a valid handle returned by this library.
 */
char *kreuzberg_ocr_config_backend_options(const KREUZBERGOcrConfig *ptr);

/**
 * Get the `element_config` field from a `OcrConfig`.
 * # Safety
 * Pointer must be a valid handle returned by this library.
 */
KREUZBERGOcrElementConfig *kreuzberg_ocr_config_element_config(const KREUZBERGOcrConfig *ptr);

/**
 * Get the `quality_thresholds` field from a `OcrConfig`.
 * # Safety
 * Pointer must be a valid handle returned by this library.
 */
KREUZBERGOcrQualityThresholds *kreuzberg_ocr_config_quality_thresholds(const KREUZBERGOcrConfig *ptr);

/**
 * Get the `pipeline` field from a `OcrConfig`.
 * # Safety
 * Pointer must be a valid handle returned by this library.
 */
KREUZBERGOcrPipelineConfig *kreuzberg_ocr_config_pipeline(const KREUZBERGOcrConfig *ptr);

/**
 * Get the `auto_rotate` field from a `OcrConfig`.
 * # Safety
 * Pointer must be a valid handle returned by this library.
 */
int32_t kreuzberg_ocr_config_auto_rotate(const KREUZBERGOcrConfig *ptr);

/**
 * Get the `vlm_config` field from a `OcrConfig`.
 * # Safety
 * Pointer must be a valid handle returned by this library.
 */
KREUZBERGLlmConfig *kreuzberg_ocr_config_vlm_config(const KREUZBERGOcrConfig *ptr);

/**
 * Get the `vlm_prompt` field from a `OcrConfig`.
 * # Safety
 * Pointer must be a valid handle returned by this library.
 */
char *kreuzberg_ocr_config_vlm_prompt(const KREUZBERGOcrConfig *ptr);

/**
 * Get the `acceleration` field from a `OcrConfig`.
 * # Safety
 * Pointer must be a valid handle returned by this library.
 */
KREUZBERGAccelerationConfig *kreuzberg_ocr_config_acceleration(const KREUZBERGOcrConfig *ptr);

/**
 * Get the `tessdata_bytes` field from a `OcrConfig`.
 * # Safety
 * Pointer must be a valid handle returned by this library.
 */
char *kreuzberg_ocr_config_tessdata_bytes(const KREUZBERGOcrConfig *ptr);

/**
 * \note SAFETY: Caller must ensure all pointer arguments are valid or null. Returned pointers must be
 * freed with the appropriate free function.
 */
KREUZBERGOcrConfig *kreuzberg_ocr_config_default(void);

/**
 * Create a `PageConfig` from a JSON string. Returns null on failure.
 * # Safety
 * JSON string must be valid UTF-8 and null-terminated.
 * Returned handle must be freed with `kreuzberg_page_config_free`.
 */
KREUZBERGPageConfig *kreuzberg_page_config_from_json(const char *json);

/**
 * Serialize a `PageConfig` to a JSON string. Returns null on failure.
 * # Safety
 * `ptr` must be a valid, non-null pointer returned by a `kreuzberg` function.
 * The returned string must be freed with `kreuzberg_free_string`.
 */
char *kreuzberg_page_config_to_json(const KREUZBERGPageConfig *ptr);

/**
 * Free a `PageConfig` handle.
 * # Safety
 * Pointer must have been returned by this library, or be null.
 */
void kreuzberg_page_config_free(KREUZBERGPageConfig *ptr);

/**
 * Get the `extract_pages` field from a `PageConfig`.
 * # Safety
 * Pointer must be a valid handle returned by this library.
 */
int32_t kreuzberg_page_config_extract_pages(const KREUZBERGPageConfig *ptr);

/**
 * Get the `insert_page_markers` field from a `PageConfig`.
 * # Safety
 * Pointer must be a valid handle returned by this library.
 */
int32_t kreuzberg_page_config_insert_page_markers(const KREUZBERGPageConfig *ptr);

/**
 * Get the `marker_format` field from a `PageConfig`.
 * # Safety
 * Pointer must be a valid handle returned by this library.
 */
char *kreuzberg_page_config_marker_format(const KREUZBERGPageConfig *ptr);

/**
 * \note SAFETY: Caller must ensure all pointer arguments are valid or null. Returned pointers must be
 * freed with the appropriate free function.
 */
KREUZBERGPageConfig *kreuzberg_page_config_default(void);

/**
 * Create a `PdfConfig` from a JSON string. Returns null on failure.
 * # Safety
 * JSON string must be valid UTF-8 and null-terminated.
 * Returned handle must be freed with `kreuzberg_pdf_config_free`.
 */
KREUZBERGPdfConfig *kreuzberg_pdf_config_from_json(const char *json);

/**
 * Serialize a `PdfConfig` to a JSON string. Returns null on failure.
 * # Safety
 * `ptr` must be a valid, non-null pointer returned by a `kreuzberg` function.
 * The returned string must be freed with `kreuzberg_free_string`.
 */
char *kreuzberg_pdf_config_to_json(const KREUZBERGPdfConfig *ptr);

/**
 * Free a `PdfConfig` handle.
 * # Safety
 * Pointer must have been returned by this library, or be null.
 */
void kreuzberg_pdf_config_free(KREUZBERGPdfConfig *ptr);

/**
 * Get the `extract_images` field from a `PdfConfig`.
 * # Safety
 * Pointer must be a valid handle returned by this library.
 */
int32_t kreuzberg_pdf_config_extract_images(const KREUZBERGPdfConfig *ptr);

/**
 * Get the `extract_tables` field from a `PdfConfig`.
 * # Safety
 * Pointer must be a valid handle returned by this library.
 */
int32_t kreuzberg_pdf_config_extract_tables(const KREUZBERGPdfConfig *ptr);

/**
 * Get the `passwords` field from a `PdfConfig`.
 * # Safety
 * Pointer must be a valid handle returned by this library.
 */
char *kreuzberg_pdf_config_passwords(const KREUZBERGPdfConfig *ptr);

/**
 * Get the `extract_metadata` field from a `PdfConfig`.
 * # Safety
 * Pointer must be a valid handle returned by this library.
 */
int32_t kreuzberg_pdf_config_extract_metadata(const KREUZBERGPdfConfig *ptr);

/**
 * Get the `hierarchy` field from a `PdfConfig`.
 * # Safety
 * Pointer must be a valid handle returned by this library.
 */
KREUZBERGHierarchyConfig *kreuzberg_pdf_config_hierarchy(const KREUZBERGPdfConfig *ptr);

/**
 * Get the `extract_annotations` field from a `PdfConfig`.
 * # Safety
 * Pointer must be a valid handle returned by this library.
 */
int32_t kreuzberg_pdf_config_extract_annotations(const KREUZBERGPdfConfig *ptr);

/**
 * Get the `top_margin_fraction` field from a `PdfConfig`.
 * # Safety
 * Pointer must be a valid handle returned by this library.
 */
float kreuzberg_pdf_config_top_margin_fraction(const KREUZBERGPdfConfig *ptr);

/**
 * Get the `bottom_margin_fraction` field from a `PdfConfig`.
 * # Safety
 * Pointer must be a valid handle returned by this library.
 */
float kreuzberg_pdf_config_bottom_margin_fraction(const KREUZBERGPdfConfig *ptr);

/**
 * Get the `allow_single_column_tables` field from a `PdfConfig`.
 * # Safety
 * Pointer must be a valid handle returned by this library.
 */
int32_t kreuzberg_pdf_config_allow_single_column_tables(const KREUZBERGPdfConfig *ptr);

/**
 * Get the `ocr_inline_images` field from a `PdfConfig`.
 * # Safety
 * Pointer must be a valid handle returned by this library.
 */
int32_t kreuzberg_pdf_config_ocr_inline_images(const KREUZBERGPdfConfig *ptr);

/**
 * \note SAFETY: Caller must ensure all pointer arguments are valid or null. Returned pointers must be
 * freed with the appropriate free function.
 */
KREUZBERGPdfConfig *kreuzberg_pdf_config_default(void);

/**
 * Create a `HierarchyConfig` from a JSON string. Returns null on failure.
 * # Safety
 * JSON string must be valid UTF-8 and null-terminated.
 * Returned handle must be freed with `kreuzberg_hierarchy_config_free`.
 */
KREUZBERGHierarchyConfig *kreuzberg_hierarchy_config_from_json(const char *json);

/**
 * Serialize a `HierarchyConfig` to a JSON string. Returns null on failure.
 * # Safety
 * `ptr` must be a valid, non-null pointer returned by a `kreuzberg` function.
 * The returned string must be freed with `kreuzberg_free_string`.
 */
char *kreuzberg_hierarchy_config_to_json(const KREUZBERGHierarchyConfig *ptr);

/**
 * Free a `HierarchyConfig` handle.
 * # Safety
 * Pointer must have been returned by this library, or be null.
 */
void kreuzberg_hierarchy_config_free(KREUZBERGHierarchyConfig *ptr);

/**
 * Get the `enabled` field from a `HierarchyConfig`.
 * # Safety
 * Pointer must be a valid handle returned by this library.
 */
int32_t kreuzberg_hierarchy_config_enabled(const KREUZBERGHierarchyConfig *ptr);

/**
 * Get the `k_clusters` field from a `HierarchyConfig`.
 * # Safety
 * Pointer must be a valid handle returned by this library.
 */
uintptr_t kreuzberg_hierarchy_config_k_clusters(const KREUZBERGHierarchyConfig *ptr);

/**
 * Get the `include_bbox` field from a `HierarchyConfig`.
 * # Safety
 * Pointer must be a valid handle returned by this library.
 */
int32_t kreuzberg_hierarchy_config_include_bbox(const KREUZBERGHierarchyConfig *ptr);

/**
 * Get the `ocr_coverage_threshold` field from a `HierarchyConfig`.
 * # Safety
 * Pointer must be a valid handle returned by this library.
 */
float kreuzberg_hierarchy_config_ocr_coverage_threshold(const KREUZBERGHierarchyConfig *ptr);

/**
 * \note SAFETY: Caller must ensure all pointer arguments are valid or null. Returned pointers must be
 * freed with the appropriate free function.
 */
KREUZBERGHierarchyConfig *kreuzberg_hierarchy_config_default(void);

/**
 * Create a `PostProcessorConfig` from a JSON string. Returns null on failure.
 * # Safety
 * JSON string must be valid UTF-8 and null-terminated.
 * Returned handle must be freed with `kreuzberg_post_processor_config_free`.
 */
KREUZBERGPostProcessorConfig *kreuzberg_post_processor_config_from_json(const char *json);

/**
 * Serialize a `PostProcessorConfig` to a JSON string. Returns null on failure.
 * # Safety
 * `ptr` must be a valid, non-null pointer returned by a `kreuzberg` function.
 * The returned string must be freed with `kreuzberg_free_string`.
 */
char *kreuzberg_post_processor_config_to_json(const KREUZBERGPostProcessorConfig *ptr);

/**
 * Free a `PostProcessorConfig` handle.
 * # Safety
 * Pointer must have been returned by this library, or be null.
 */
void kreuzberg_post_processor_config_free(KREUZBERGPostProcessorConfig *ptr);

/**
 * Get the `enabled` field from a `PostProcessorConfig`.
 * # Safety
 * Pointer must be a valid handle returned by this library.
 */
int32_t kreuzberg_post_processor_config_enabled(const KREUZBERGPostProcessorConfig *ptr);

/**
 * Get the `enabled_processors` field from a `PostProcessorConfig`.
 * # Safety
 * Pointer must be a valid handle returned by this library.
 */
char *kreuzberg_post_processor_config_enabled_processors(const KREUZBERGPostProcessorConfig *ptr);

/**
 * Get the `disabled_processors` field from a `PostProcessorConfig`.
 * # Safety
 * Pointer must be a valid handle returned by this library.
 */
char *kreuzberg_post_processor_config_disabled_processors(const KREUZBERGPostProcessorConfig *ptr);

/**
 * Get the `enabled_set` field from a `PostProcessorConfig`.
 * # Safety
 * Pointer must be a valid handle returned by this library.
 */
char *kreuzberg_post_processor_config_enabled_set(const KREUZBERGPostProcessorConfig *ptr);

/**
 * Get the `disabled_set` field from a `PostProcessorConfig`.
 * # Safety
 * Pointer must be a valid handle returned by this library.
 */
char *kreuzberg_post_processor_config_disabled_set(const KREUZBERGPostProcessorConfig *ptr);

/**
 * \note SAFETY: Caller must ensure all pointer arguments are valid or null. Returned pointers must be
 * freed with the appropriate free function.
 */
KREUZBERGPostProcessorConfig *kreuzberg_post_processor_config_default(void);

/**
 * Create a `ChunkingConfig` from a JSON string. Returns null on failure.
 * # Safety
 * JSON string must be valid UTF-8 and null-terminated.
 * Returned handle must be freed with `kreuzberg_chunking_config_free`.
 */
KREUZBERGChunkingConfig *kreuzberg_chunking_config_from_json(const char *json);

/**
 * Serialize a `ChunkingConfig` to a JSON string. Returns null on failure.
 * # Safety
 * `ptr` must be a valid, non-null pointer returned by a `kreuzberg` function.
 * The returned string must be freed with `kreuzberg_free_string`.
 */
char *kreuzberg_chunking_config_to_json(const KREUZBERGChunkingConfig *ptr);

/**
 * Free a `ChunkingConfig` handle.
 * # Safety
 * Pointer must have been returned by this library, or be null.
 */
void kreuzberg_chunking_config_free(KREUZBERGChunkingConfig *ptr);

/**
 * Get the `max_characters` field from a `ChunkingConfig`.
 * # Safety
 * Pointer must be a valid handle returned by this library.
 */
uintptr_t kreuzberg_chunking_config_max_characters(const KREUZBERGChunkingConfig *ptr);

/**
 * Get the `overlap` field from a `ChunkingConfig`.
 * # Safety
 * Pointer must be a valid handle returned by this library.
 */
uintptr_t kreuzberg_chunking_config_overlap(const KREUZBERGChunkingConfig *ptr);

/**
 * Get the `trim` field from a `ChunkingConfig`.
 * # Safety
 * Pointer must be a valid handle returned by this library.
 */
int32_t kreuzberg_chunking_config_trim(const KREUZBERGChunkingConfig *ptr);

/**
 * Get the `chunker_type` field from a `ChunkingConfig`.
 * # Safety
 * Pointer must be a valid handle returned by this library.
 */
KREUZBERGChunkerType *kreuzberg_chunking_config_chunker_type(const KREUZBERGChunkingConfig *ptr);

/**
 * Get the `embedding` field from a `ChunkingConfig`.
 * # Safety
 * Pointer must be a valid handle returned by this library.
 */
KREUZBERGEmbeddingConfig *kreuzberg_chunking_config_embedding(const KREUZBERGChunkingConfig *ptr);

/**
 * Get the `preset` field from a `ChunkingConfig`.
 * # Safety
 * Pointer must be a valid handle returned by this library.
 */
char *kreuzberg_chunking_config_preset(const KREUZBERGChunkingConfig *ptr);

/**
 * Get the `sizing` field from a `ChunkingConfig`.
 * # Safety
 * Pointer must be a valid handle returned by this library.
 */
KREUZBERGChunkSizing *kreuzberg_chunking_config_sizing(const KREUZBERGChunkingConfig *ptr);

/**
 * Get the `prepend_heading_context` field from a `ChunkingConfig`.
 * # Safety
 * Pointer must be a valid handle returned by this library.
 */
int32_t kreuzberg_chunking_config_prepend_heading_context(const KREUZBERGChunkingConfig *ptr);

/**
 * Get the `topic_threshold` field from a `ChunkingConfig`.
 * # Safety
 * Pointer must be a valid handle returned by this library.
 */
float kreuzberg_chunking_config_topic_threshold(const KREUZBERGChunkingConfig *ptr);

/**
 * \note SAFETY: Caller must ensure all pointer arguments are valid or null. Returned pointers must be
 * freed with the appropriate free function.
 */
KREUZBERGChunkingConfig *kreuzberg_chunking_config_default(void);

/**
 * Create a `EmbeddingConfig` from a JSON string. Returns null on failure.
 * # Safety
 * JSON string must be valid UTF-8 and null-terminated.
 * Returned handle must be freed with `kreuzberg_embedding_config_free`.
 */
KREUZBERGEmbeddingConfig *kreuzberg_embedding_config_from_json(const char *json);

/**
 * Serialize a `EmbeddingConfig` to a JSON string. Returns null on failure.
 * # Safety
 * `ptr` must be a valid, non-null pointer returned by a `kreuzberg` function.
 * The returned string must be freed with `kreuzberg_free_string`.
 */
char *kreuzberg_embedding_config_to_json(const KREUZBERGEmbeddingConfig *ptr);

/**
 * Free a `EmbeddingConfig` handle.
 * # Safety
 * Pointer must have been returned by this library, or be null.
 */
void kreuzberg_embedding_config_free(KREUZBERGEmbeddingConfig *ptr);

/**
 * Get the `model` field from a `EmbeddingConfig`.
 * # Safety
 * Pointer must be a valid handle returned by this library.
 */
KREUZBERGEmbeddingModelType *kreuzberg_embedding_config_model(const KREUZBERGEmbeddingConfig *ptr);

/**
 * Get the `normalize` field from a `EmbeddingConfig`.
 * # Safety
 * Pointer must be a valid handle returned by this library.
 */
int32_t kreuzberg_embedding_config_normalize(const KREUZBERGEmbeddingConfig *ptr);

/**
 * Get the `batch_size` field from a `EmbeddingConfig`.
 * # Safety
 * Pointer must be a valid handle returned by this library.
 */
uintptr_t kreuzberg_embedding_config_batch_size(const KREUZBERGEmbeddingConfig *ptr);

/**
 * Get the `show_download_progress` field from a `EmbeddingConfig`.
 * # Safety
 * Pointer must be a valid handle returned by this library.
 */
int32_t kreuzberg_embedding_config_show_download_progress(const KREUZBERGEmbeddingConfig *ptr);

/**
 * Get the `cache_dir` field from a `EmbeddingConfig`.
 * # Safety
 * Pointer must be a valid handle returned by this library.
 */
char *kreuzberg_embedding_config_cache_dir(const KREUZBERGEmbeddingConfig *ptr);

/**
 * Get the `acceleration` field from a `EmbeddingConfig`.
 * # Safety
 * Pointer must be a valid handle returned by this library.
 */
KREUZBERGAccelerationConfig *kreuzberg_embedding_config_acceleration(const KREUZBERGEmbeddingConfig *ptr);

/**
 * Get the `max_embed_duration_secs` field from a `EmbeddingConfig`.
 * # Safety
 * Pointer must be a valid handle returned by this library.
 */
uint64_t kreuzberg_embedding_config_max_embed_duration_secs(const KREUZBERGEmbeddingConfig *ptr);

/**
 * \note SAFETY: Caller must ensure all pointer arguments are valid or null. Returned pointers must be
 * freed with the appropriate free function.
 */
KREUZBERGEmbeddingConfig *kreuzberg_embedding_config_default(void);

/**
 * Create a `TreeSitterConfig` from a JSON string. Returns null on failure.
 * # Safety
 * JSON string must be valid UTF-8 and null-terminated.
 * Returned handle must be freed with `kreuzberg_tree_sitter_config_free`.
 */
KREUZBERGTreeSitterConfig *kreuzberg_tree_sitter_config_from_json(const char *json);

/**
 * Serialize a `TreeSitterConfig` to a JSON string. Returns null on failure.
 * # Safety
 * `ptr` must be a valid, non-null pointer returned by a `kreuzberg` function.
 * The returned string must be freed with `kreuzberg_free_string`.
 */
char *kreuzberg_tree_sitter_config_to_json(const KREUZBERGTreeSitterConfig *ptr);

/**
 * Free a `TreeSitterConfig` handle.
 * # Safety
 * Pointer must have been returned by this library, or be null.
 */
void kreuzberg_tree_sitter_config_free(KREUZBERGTreeSitterConfig *ptr);

/**
 * Get the `enabled` field from a `TreeSitterConfig`.
 * # Safety
 * Pointer must be a valid handle returned by this library.
 */
int32_t kreuzberg_tree_sitter_config_enabled(const KREUZBERGTreeSitterConfig *ptr);

/**
 * Get the `cache_dir` field from a `TreeSitterConfig`.
 * # Safety
 * Pointer must be a valid handle returned by this library.
 */
char *kreuzberg_tree_sitter_config_cache_dir(const KREUZBERGTreeSitterConfig *ptr);

/**
 * Get the `languages` field from a `TreeSitterConfig`.
 * # Safety
 * Pointer must be a valid handle returned by this library.
 */
char *kreuzberg_tree_sitter_config_languages(const KREUZBERGTreeSitterConfig *ptr);

/**
 * Get the `groups` field from a `TreeSitterConfig`.
 * # Safety
 * Pointer must be a valid handle returned by this library.
 */
char *kreuzberg_tree_sitter_config_groups(const KREUZBERGTreeSitterConfig *ptr);

/**
 * Get the `process` field from a `TreeSitterConfig`.
 * # Safety
 * Pointer must be a valid handle returned by this library.
 */
KREUZBERGTreeSitterProcessConfig *kreuzberg_tree_sitter_config_process(const KREUZBERGTreeSitterConfig *ptr);

/**
 * \note SAFETY: Caller must ensure all pointer arguments are valid or null. Returned pointers must be
 * freed with the appropriate free function.
 */
KREUZBERGTreeSitterConfig *kreuzberg_tree_sitter_config_default(void);

/**
 * Create a `TreeSitterProcessConfig` from a JSON string. Returns null on failure.
 * # Safety
 * JSON string must be valid UTF-8 and null-terminated.
 * Returned handle must be freed with `kreuzberg_tree_sitter_process_config_free`.
 */
KREUZBERGTreeSitterProcessConfig *kreuzberg_tree_sitter_process_config_from_json(const char *json);

/**
 * Serialize a `TreeSitterProcessConfig` to a JSON string. Returns null on failure.
 * # Safety
 * `ptr` must be a valid, non-null pointer returned by a `kreuzberg` function.
 * The returned string must be freed with `kreuzberg_free_string`.
 */
char *kreuzberg_tree_sitter_process_config_to_json(const KREUZBERGTreeSitterProcessConfig *ptr);

/**
 * Free a `TreeSitterProcessConfig` handle.
 * # Safety
 * Pointer must have been returned by this library, or be null.
 */
void kreuzberg_tree_sitter_process_config_free(KREUZBERGTreeSitterProcessConfig *ptr);

/**
 * Get the `structure` field from a `TreeSitterProcessConfig`.
 * # Safety
 * Pointer must be a valid handle returned by this library.
 */
int32_t kreuzberg_tree_sitter_process_config_structure(const KREUZBERGTreeSitterProcessConfig *ptr);

/**
 * Get the `imports` field from a `TreeSitterProcessConfig`.
 * # Safety
 * Pointer must be a valid handle returned by this library.
 */
int32_t kreuzberg_tree_sitter_process_config_imports(const KREUZBERGTreeSitterProcessConfig *ptr);

/**
 * Get the `exports` field from a `TreeSitterProcessConfig`.
 * # Safety
 * Pointer must be a valid handle returned by this library.
 */
int32_t kreuzberg_tree_sitter_process_config_exports(const KREUZBERGTreeSitterProcessConfig *ptr);

/**
 * Get the `comments` field from a `TreeSitterProcessConfig`.
 * # Safety
 * Pointer must be a valid handle returned by this library.
 */
int32_t kreuzberg_tree_sitter_process_config_comments(const KREUZBERGTreeSitterProcessConfig *ptr);

/**
 * Get the `docstrings` field from a `TreeSitterProcessConfig`.
 * # Safety
 * Pointer must be a valid handle returned by this library.
 */
int32_t kreuzberg_tree_sitter_process_config_docstrings(const KREUZBERGTreeSitterProcessConfig *ptr);

/**
 * Get the `symbols` field from a `TreeSitterProcessConfig`.
 * # Safety
 * Pointer must be a valid handle returned by this library.
 */
int32_t kreuzberg_tree_sitter_process_config_symbols(const KREUZBERGTreeSitterProcessConfig *ptr);

/**
 * Get the `diagnostics` field from a `TreeSitterProcessConfig`.
 * # Safety
 * Pointer must be a valid handle returned by this library.
 */
int32_t kreuzberg_tree_sitter_process_config_diagnostics(const KREUZBERGTreeSitterProcessConfig *ptr);

/**
 * Get the `chunk_max_size` field from a `TreeSitterProcessConfig`.
 * # Safety
 * Pointer must be a valid handle returned by this library.
 */
uintptr_t kreuzberg_tree_sitter_process_config_chunk_max_size(const KREUZBERGTreeSitterProcessConfig *ptr);

/**
 * Get the `content_mode` field from a `TreeSitterProcessConfig`.
 * # Safety
 * Pointer must be a valid handle returned by this library.
 */
KREUZBERGCodeContentMode *kreuzberg_tree_sitter_process_config_content_mode(const KREUZBERGTreeSitterProcessConfig *ptr);

/**
 * \note SAFETY: Caller must ensure all pointer arguments are valid or null. Returned pointers must be
 * freed with the appropriate free function.
 */
KREUZBERGTreeSitterProcessConfig *kreuzberg_tree_sitter_process_config_default(void);

/**
 * Create a `SupportedFormat` from a JSON string. Returns null on failure.
 * # Safety
 * JSON string must be valid UTF-8 and null-terminated.
 * Returned handle must be freed with `kreuzberg_supported_format_free`.
 */
KREUZBERGSupportedFormat *kreuzberg_supported_format_from_json(const char *json);

/**
 * Serialize a `SupportedFormat` to a JSON string. Returns null on failure.
 * # Safety
 * `ptr` must be a valid, non-null pointer returned by a `kreuzberg` function.
 * The returned string must be freed with `kreuzberg_free_string`.
 */
char *kreuzberg_supported_format_to_json(const KREUZBERGSupportedFormat *ptr);

/**
 * Free a `SupportedFormat` handle.
 * # Safety
 * Pointer must have been returned by this library, or be null.
 */
void kreuzberg_supported_format_free(KREUZBERGSupportedFormat *ptr);

/**
 * Get the `extension` field from a `SupportedFormat`.
 * # Safety
 * Pointer must be a valid handle returned by this library.
 */
char *kreuzberg_supported_format_extension(const KREUZBERGSupportedFormat *ptr);

/**
 * Get the `mime_type` field from a `SupportedFormat`.
 * # Safety
 * Pointer must be a valid handle returned by this library.
 */
char *kreuzberg_supported_format_mime_type(const KREUZBERGSupportedFormat *ptr);

/**
 * Create a `ServerConfig` from a JSON string. Returns null on failure.
 * # Safety
 * JSON string must be valid UTF-8 and null-terminated.
 * Returned handle must be freed with `kreuzberg_server_config_free`.
 */
KREUZBERGServerConfig *kreuzberg_server_config_from_json(const char *json);

/**
 * Serialize a `ServerConfig` to a JSON string. Returns null on failure.
 * # Safety
 * `ptr` must be a valid, non-null pointer returned by a `kreuzberg` function.
 * The returned string must be freed with `kreuzberg_free_string`.
 */
char *kreuzberg_server_config_to_json(const KREUZBERGServerConfig *ptr);

/**
 * Free a `ServerConfig` handle.
 * # Safety
 * Pointer must have been returned by this library, or be null.
 */
void kreuzberg_server_config_free(KREUZBERGServerConfig *ptr);

/**
 * Get the `host` field from a `ServerConfig`.
 * # Safety
 * Pointer must be a valid handle returned by this library.
 */
char *kreuzberg_server_config_host(const KREUZBERGServerConfig *ptr);

/**
 * Get the `port` field from a `ServerConfig`.
 * # Safety
 * Pointer must be a valid handle returned by this library.
 */
uint16_t kreuzberg_server_config_port(const KREUZBERGServerConfig *ptr);

/**
 * Get the `cors_origins` field from a `ServerConfig`.
 * # Safety
 * Pointer must be a valid handle returned by this library.
 */
char *kreuzberg_server_config_cors_origins(const KREUZBERGServerConfig *ptr);

/**
 * Get the `max_request_body_bytes` field from a `ServerConfig`.
 * # Safety
 * Pointer must be a valid handle returned by this library.
 */
uintptr_t kreuzberg_server_config_max_request_body_bytes(const KREUZBERGServerConfig *ptr);

/**
 * Get the `max_multipart_field_bytes` field from a `ServerConfig`.
 * # Safety
 * Pointer must be a valid handle returned by this library.
 */
uintptr_t kreuzberg_server_config_max_multipart_field_bytes(const KREUZBERGServerConfig *ptr);

/**
 * \note SAFETY: Caller must ensure all pointer arguments are valid or null. Returned pointers must be
 * freed with the appropriate free function.
 */
KREUZBERGServerConfig *kreuzberg_server_config_default(void);

/**
 * Get the server listen address (host:port).
 * \note SAFETY: Caller must ensure all pointer arguments are valid or null. Returned pointers must be
 * freed with the appropriate free function.
 * \code
 * use kreuzberg::core::ServerConfig;
 *
 * let config = ServerConfig::default();
 * assert_eq!(config.listen_addr(), "127.0.0.1:8000");
 * \endcode
 */
char *kreuzberg_server_config_listen_addr(const KREUZBERGServerConfig *this_);

/**
 * Check if CORS allows all origins.
 *
 * Returns `true` if the `cors_origins` vector is empty, meaning all origins
 * are allowed. Returns `false` if specific origins are configured.
 * \note SAFETY: Caller must ensure all pointer arguments are valid or null. Returned pointers must be
 * freed with the appropriate free function.
 * \code
 * use kreuzberg::core::ServerConfig;
 *
 * let mut config = ServerConfig::default();
 * assert!(config.cors_allows_all());
 *
 * config.cors_origins.push("https://example.com".to_string());
 * assert!(!config.cors_allows_all());
 * \endcode
 */
int32_t kreuzberg_server_config_cors_allows_all(const KREUZBERGServerConfig *this_);

/**
 * Check if a given origin is allowed by CORS configuration.
 *
 * Returns `true` if:
 * - CORS allows all origins (empty origins list), or
 * - The given origin is in the allowed origins list
 * \param origin The origin to check (e.g., "https://example.com")
 * \note SAFETY: Caller must ensure all pointer arguments are valid or null. Returned pointers must be
 * freed with the appropriate free function.
 * \code
 * use kreuzberg::core::ServerConfig;
 *
 * let mut config = ServerConfig::default();
 * assert!(config.is_origin_allowed("https://example.com"));
 *
 * config.cors_origins.push("https://allowed.com".to_string());
 * assert!(config.is_origin_allowed("https://allowed.com"));
 * assert!(!config.is_origin_allowed("https://denied.com"));
 * \endcode
 */
int32_t kreuzberg_server_config_is_origin_allowed(const KREUZBERGServerConfig *this_,
                                                  const char *origin);

/**
 * Get maximum request body size in megabytes (rounded up).
 * \note SAFETY: Caller must ensure all pointer arguments are valid or null. Returned pointers must be
 * freed with the appropriate free function.
 * \code
 * use kreuzberg::core::ServerConfig;
 *
 * let mut config = ServerConfig::default();
 * assert_eq!(config.max_request_body_mb(), 100);
 * \endcode
 */
uintptr_t kreuzberg_server_config_max_request_body_mb(const KREUZBERGServerConfig *this_);

/**
 * Get maximum multipart field size in megabytes (rounded up).
 * \note SAFETY: Caller must ensure all pointer arguments are valid or null. Returned pointers must be
 * freed with the appropriate free function.
 * \code
 * use kreuzberg::core::ServerConfig;
 *
 * let mut config = ServerConfig::default();
 * assert_eq!(config.max_multipart_field_mb(), 100);
 * \endcode
 */
uintptr_t kreuzberg_server_config_max_multipart_field_mb(const KREUZBERGServerConfig *this_);

/**
 * Create a `StructuredDataResult` from a JSON string. Returns null on failure.
 * # Safety
 * JSON string must be valid UTF-8 and null-terminated.
 * Returned handle must be freed with `kreuzberg_structured_data_result_free`.
 */
KREUZBERGStructuredDataResult *kreuzberg_structured_data_result_from_json(const char *json);

/**
 * Serialize a `StructuredDataResult` to a JSON string. Returns null on failure.
 * # Safety
 * `ptr` must be a valid, non-null pointer returned by a `kreuzberg` function.
 * The returned string must be freed with `kreuzberg_free_string`.
 */
char *kreuzberg_structured_data_result_to_json(const KREUZBERGStructuredDataResult *ptr);

/**
 * Free a `StructuredDataResult` handle.
 * # Safety
 * Pointer must have been returned by this library, or be null.
 */
void kreuzberg_structured_data_result_free(KREUZBERGStructuredDataResult *ptr);

/**
 * Get the `content` field from a `StructuredDataResult`.
 * # Safety
 * Pointer must be a valid handle returned by this library.
 */
char *kreuzberg_structured_data_result_content(const KREUZBERGStructuredDataResult *ptr);

/**
 * Get the `format` field from a `StructuredDataResult`.
 * # Safety
 * Pointer must be a valid handle returned by this library.
 */
char *kreuzberg_structured_data_result_format(const KREUZBERGStructuredDataResult *ptr);

/**
 * Get the `metadata` field from a `StructuredDataResult`.
 * # Safety
 * Pointer must be a valid handle returned by this library.
 */
char *kreuzberg_structured_data_result_metadata(const KREUZBERGStructuredDataResult *ptr);

/**
 * Get the `text_fields` field from a `StructuredDataResult`.
 * # Safety
 * Pointer must be a valid handle returned by this library.
 */
char *kreuzberg_structured_data_result_text_fields(const KREUZBERGStructuredDataResult *ptr);

/**
 * Create a `DocxAppProperties` from a JSON string. Returns null on failure.
 * # Safety
 * JSON string must be valid UTF-8 and null-terminated.
 * Returned handle must be freed with `kreuzberg_docx_app_properties_free`.
 */
KREUZBERGDocxAppProperties *kreuzberg_docx_app_properties_from_json(const char *json);

/**
 * Serialize a `DocxAppProperties` to a JSON string. Returns null on failure.
 * # Safety
 * `ptr` must be a valid, non-null pointer returned by a `kreuzberg` function.
 * The returned string must be freed with `kreuzberg_free_string`.
 */
char *kreuzberg_docx_app_properties_to_json(const KREUZBERGDocxAppProperties *ptr);

/**
 * Free a `DocxAppProperties` handle.
 * # Safety
 * Pointer must have been returned by this library, or be null.
 */
void kreuzberg_docx_app_properties_free(KREUZBERGDocxAppProperties *ptr);

/**
 * Get the `application` field from a `DocxAppProperties`.
 * # Safety
 * Pointer must be a valid handle returned by this library.
 */
char *kreuzberg_docx_app_properties_application(const KREUZBERGDocxAppProperties *ptr);

/**
 * Get the `app_version` field from a `DocxAppProperties`.
 * # Safety
 * Pointer must be a valid handle returned by this library.
 */
char *kreuzberg_docx_app_properties_app_version(const KREUZBERGDocxAppProperties *ptr);

/**
 * Get the `template` field from a `DocxAppProperties`.
 * # Safety
 * Pointer must be a valid handle returned by this library.
 */
char *kreuzberg_docx_app_properties_template(const KREUZBERGDocxAppProperties *ptr);

/**
 * Get the `total_time` field from a `DocxAppProperties`.
 * # Safety
 * Pointer must be a valid handle returned by this library.
 */
int32_t kreuzberg_docx_app_properties_total_time(const KREUZBERGDocxAppProperties *ptr);

/**
 * Get the `pages` field from a `DocxAppProperties`.
 * # Safety
 * Pointer must be a valid handle returned by this library.
 */
int32_t kreuzberg_docx_app_properties_pages(const KREUZBERGDocxAppProperties *ptr);

/**
 * Get the `words` field from a `DocxAppProperties`.
 * # Safety
 * Pointer must be a valid handle returned by this library.
 */
int32_t kreuzberg_docx_app_properties_words(const KREUZBERGDocxAppProperties *ptr);

/**
 * Get the `characters` field from a `DocxAppProperties`.
 * # Safety
 * Pointer must be a valid handle returned by this library.
 */
int32_t kreuzberg_docx_app_properties_characters(const KREUZBERGDocxAppProperties *ptr);

/**
 * Get the `characters_with_spaces` field from a `DocxAppProperties`.
 * # Safety
 * Pointer must be a valid handle returned by this library.
 */
int32_t kreuzberg_docx_app_properties_characters_with_spaces(const KREUZBERGDocxAppProperties *ptr);

/**
 * Get the `lines` field from a `DocxAppProperties`.
 * # Safety
 * Pointer must be a valid handle returned by this library.
 */
int32_t kreuzberg_docx_app_properties_lines(const KREUZBERGDocxAppProperties *ptr);

/**
 * Get the `paragraphs` field from a `DocxAppProperties`.
 * # Safety
 * Pointer must be a valid handle returned by this library.
 */
int32_t kreuzberg_docx_app_properties_paragraphs(const KREUZBERGDocxAppProperties *ptr);

/**
 * Get the `company` field from a `DocxAppProperties`.
 * # Safety
 * Pointer must be a valid handle returned by this library.
 */
char *kreuzberg_docx_app_properties_company(const KREUZBERGDocxAppProperties *ptr);

/**
 * Get the `doc_security` field from a `DocxAppProperties`.
 * # Safety
 * Pointer must be a valid handle returned by this library.
 */
int32_t kreuzberg_docx_app_properties_doc_security(const KREUZBERGDocxAppProperties *ptr);

/**
 * Get the `scale_crop` field from a `DocxAppProperties`.
 * # Safety
 * Pointer must be a valid handle returned by this library.
 */
int32_t kreuzberg_docx_app_properties_scale_crop(const KREUZBERGDocxAppProperties *ptr);

/**
 * Get the `links_up_to_date` field from a `DocxAppProperties`.
 * # Safety
 * Pointer must be a valid handle returned by this library.
 */
int32_t kreuzberg_docx_app_properties_links_up_to_date(const KREUZBERGDocxAppProperties *ptr);

/**
 * Get the `shared_doc` field from a `DocxAppProperties`.
 * # Safety
 * Pointer must be a valid handle returned by this library.
 */
int32_t kreuzberg_docx_app_properties_shared_doc(const KREUZBERGDocxAppProperties *ptr);

/**
 * Get the `hyperlinks_changed` field from a `DocxAppProperties`.
 * # Safety
 * Pointer must be a valid handle returned by this library.
 */
int32_t kreuzberg_docx_app_properties_hyperlinks_changed(const KREUZBERGDocxAppProperties *ptr);

/**
 * Create a `XlsxAppProperties` from a JSON string. Returns null on failure.
 * # Safety
 * JSON string must be valid UTF-8 and null-terminated.
 * Returned handle must be freed with `kreuzberg_xlsx_app_properties_free`.
 */
KREUZBERGXlsxAppProperties *kreuzberg_xlsx_app_properties_from_json(const char *json);

/**
 * Serialize a `XlsxAppProperties` to a JSON string. Returns null on failure.
 * # Safety
 * `ptr` must be a valid, non-null pointer returned by a `kreuzberg` function.
 * The returned string must be freed with `kreuzberg_free_string`.
 */
char *kreuzberg_xlsx_app_properties_to_json(const KREUZBERGXlsxAppProperties *ptr);

/**
 * Free a `XlsxAppProperties` handle.
 * # Safety
 * Pointer must have been returned by this library, or be null.
 */
void kreuzberg_xlsx_app_properties_free(KREUZBERGXlsxAppProperties *ptr);

/**
 * Get the `application` field from a `XlsxAppProperties`.
 * # Safety
 * Pointer must be a valid handle returned by this library.
 */
char *kreuzberg_xlsx_app_properties_application(const KREUZBERGXlsxAppProperties *ptr);

/**
 * Get the `app_version` field from a `XlsxAppProperties`.
 * # Safety
 * Pointer must be a valid handle returned by this library.
 */
char *kreuzberg_xlsx_app_properties_app_version(const KREUZBERGXlsxAppProperties *ptr);

/**
 * Get the `doc_security` field from a `XlsxAppProperties`.
 * # Safety
 * Pointer must be a valid handle returned by this library.
 */
int32_t kreuzberg_xlsx_app_properties_doc_security(const KREUZBERGXlsxAppProperties *ptr);

/**
 * Get the `scale_crop` field from a `XlsxAppProperties`.
 * # Safety
 * Pointer must be a valid handle returned by this library.
 */
int32_t kreuzberg_xlsx_app_properties_scale_crop(const KREUZBERGXlsxAppProperties *ptr);

/**
 * Get the `links_up_to_date` field from a `XlsxAppProperties`.
 * # Safety
 * Pointer must be a valid handle returned by this library.
 */
int32_t kreuzberg_xlsx_app_properties_links_up_to_date(const KREUZBERGXlsxAppProperties *ptr);

/**
 * Get the `shared_doc` field from a `XlsxAppProperties`.
 * # Safety
 * Pointer must be a valid handle returned by this library.
 */
int32_t kreuzberg_xlsx_app_properties_shared_doc(const KREUZBERGXlsxAppProperties *ptr);

/**
 * Get the `hyperlinks_changed` field from a `XlsxAppProperties`.
 * # Safety
 * Pointer must be a valid handle returned by this library.
 */
int32_t kreuzberg_xlsx_app_properties_hyperlinks_changed(const KREUZBERGXlsxAppProperties *ptr);

/**
 * Get the `company` field from a `XlsxAppProperties`.
 * # Safety
 * Pointer must be a valid handle returned by this library.
 */
char *kreuzberg_xlsx_app_properties_company(const KREUZBERGXlsxAppProperties *ptr);

/**
 * Get the `worksheet_names` field from a `XlsxAppProperties`.
 * # Safety
 * Pointer must be a valid handle returned by this library.
 */
char *kreuzberg_xlsx_app_properties_worksheet_names(const KREUZBERGXlsxAppProperties *ptr);

/**
 * Create a `PptxAppProperties` from a JSON string. Returns null on failure.
 * # Safety
 * JSON string must be valid UTF-8 and null-terminated.
 * Returned handle must be freed with `kreuzberg_pptx_app_properties_free`.
 */
KREUZBERGPptxAppProperties *kreuzberg_pptx_app_properties_from_json(const char *json);

/**
 * Serialize a `PptxAppProperties` to a JSON string. Returns null on failure.
 * # Safety
 * `ptr` must be a valid, non-null pointer returned by a `kreuzberg` function.
 * The returned string must be freed with `kreuzberg_free_string`.
 */
char *kreuzberg_pptx_app_properties_to_json(const KREUZBERGPptxAppProperties *ptr);

/**
 * Free a `PptxAppProperties` handle.
 * # Safety
 * Pointer must have been returned by this library, or be null.
 */
void kreuzberg_pptx_app_properties_free(KREUZBERGPptxAppProperties *ptr);

/**
 * Get the `application` field from a `PptxAppProperties`.
 * # Safety
 * Pointer must be a valid handle returned by this library.
 */
char *kreuzberg_pptx_app_properties_application(const KREUZBERGPptxAppProperties *ptr);

/**
 * Get the `app_version` field from a `PptxAppProperties`.
 * # Safety
 * Pointer must be a valid handle returned by this library.
 */
char *kreuzberg_pptx_app_properties_app_version(const KREUZBERGPptxAppProperties *ptr);

/**
 * Get the `total_time` field from a `PptxAppProperties`.
 * # Safety
 * Pointer must be a valid handle returned by this library.
 */
int32_t kreuzberg_pptx_app_properties_total_time(const KREUZBERGPptxAppProperties *ptr);

/**
 * Get the `company` field from a `PptxAppProperties`.
 * # Safety
 * Pointer must be a valid handle returned by this library.
 */
char *kreuzberg_pptx_app_properties_company(const KREUZBERGPptxAppProperties *ptr);

/**
 * Get the `doc_security` field from a `PptxAppProperties`.
 * # Safety
 * Pointer must be a valid handle returned by this library.
 */
int32_t kreuzberg_pptx_app_properties_doc_security(const KREUZBERGPptxAppProperties *ptr);

/**
 * Get the `scale_crop` field from a `PptxAppProperties`.
 * # Safety
 * Pointer must be a valid handle returned by this library.
 */
int32_t kreuzberg_pptx_app_properties_scale_crop(const KREUZBERGPptxAppProperties *ptr);

/**
 * Get the `links_up_to_date` field from a `PptxAppProperties`.
 * # Safety
 * Pointer must be a valid handle returned by this library.
 */
int32_t kreuzberg_pptx_app_properties_links_up_to_date(const KREUZBERGPptxAppProperties *ptr);

/**
 * Get the `shared_doc` field from a `PptxAppProperties`.
 * # Safety
 * Pointer must be a valid handle returned by this library.
 */
int32_t kreuzberg_pptx_app_properties_shared_doc(const KREUZBERGPptxAppProperties *ptr);

/**
 * Get the `hyperlinks_changed` field from a `PptxAppProperties`.
 * # Safety
 * Pointer must be a valid handle returned by this library.
 */
int32_t kreuzberg_pptx_app_properties_hyperlinks_changed(const KREUZBERGPptxAppProperties *ptr);

/**
 * Get the `slides` field from a `PptxAppProperties`.
 * # Safety
 * Pointer must be a valid handle returned by this library.
 */
int32_t kreuzberg_pptx_app_properties_slides(const KREUZBERGPptxAppProperties *ptr);

/**
 * Get the `notes` field from a `PptxAppProperties`.
 * # Safety
 * Pointer must be a valid handle returned by this library.
 */
int32_t kreuzberg_pptx_app_properties_notes(const KREUZBERGPptxAppProperties *ptr);

/**
 * Get the `hidden_slides` field from a `PptxAppProperties`.
 * # Safety
 * Pointer must be a valid handle returned by this library.
 */
int32_t kreuzberg_pptx_app_properties_hidden_slides(const KREUZBERGPptxAppProperties *ptr);

/**
 * Get the `multimedia_clips` field from a `PptxAppProperties`.
 * # Safety
 * Pointer must be a valid handle returned by this library.
 */
int32_t kreuzberg_pptx_app_properties_multimedia_clips(const KREUZBERGPptxAppProperties *ptr);

/**
 * Get the `presentation_format` field from a `PptxAppProperties`.
 * # Safety
 * Pointer must be a valid handle returned by this library.
 */
char *kreuzberg_pptx_app_properties_presentation_format(const KREUZBERGPptxAppProperties *ptr);

/**
 * Get the `slide_titles` field from a `PptxAppProperties`.
 * # Safety
 * Pointer must be a valid handle returned by this library.
 */
char *kreuzberg_pptx_app_properties_slide_titles(const KREUZBERGPptxAppProperties *ptr);

/**
 * Create a `CoreProperties` from a JSON string. Returns null on failure.
 * # Safety
 * JSON string must be valid UTF-8 and null-terminated.
 * Returned handle must be freed with `kreuzberg_core_properties_free`.
 */
KREUZBERGCoreProperties *kreuzberg_core_properties_from_json(const char *json);

/**
 * Serialize a `CoreProperties` to a JSON string. Returns null on failure.
 * # Safety
 * `ptr` must be a valid, non-null pointer returned by a `kreuzberg` function.
 * The returned string must be freed with `kreuzberg_free_string`.
 */
char *kreuzberg_core_properties_to_json(const KREUZBERGCoreProperties *ptr);

/**
 * Free a `CoreProperties` handle.
 * # Safety
 * Pointer must have been returned by this library, or be null.
 */
void kreuzberg_core_properties_free(KREUZBERGCoreProperties *ptr);

/**
 * Get the `title` field from a `CoreProperties`.
 * # Safety
 * Pointer must be a valid handle returned by this library.
 */
char *kreuzberg_core_properties_title(const KREUZBERGCoreProperties *ptr);

/**
 * Get the `subject` field from a `CoreProperties`.
 * # Safety
 * Pointer must be a valid handle returned by this library.
 */
char *kreuzberg_core_properties_subject(const KREUZBERGCoreProperties *ptr);

/**
 * Get the `creator` field from a `CoreProperties`.
 * # Safety
 * Pointer must be a valid handle returned by this library.
 */
char *kreuzberg_core_properties_creator(const KREUZBERGCoreProperties *ptr);

/**
 * Get the `keywords` field from a `CoreProperties`.
 * # Safety
 * Pointer must be a valid handle returned by this library.
 */
char *kreuzberg_core_properties_keywords(const KREUZBERGCoreProperties *ptr);

/**
 * Get the `description` field from a `CoreProperties`.
 * # Safety
 * Pointer must be a valid handle returned by this library.
 */
char *kreuzberg_core_properties_description(const KREUZBERGCoreProperties *ptr);

/**
 * Get the `last_modified_by` field from a `CoreProperties`.
 * # Safety
 * Pointer must be a valid handle returned by this library.
 */
char *kreuzberg_core_properties_last_modified_by(const KREUZBERGCoreProperties *ptr);

/**
 * Get the `revision` field from a `CoreProperties`.
 * # Safety
 * Pointer must be a valid handle returned by this library.
 */
char *kreuzberg_core_properties_revision(const KREUZBERGCoreProperties *ptr);

/**
 * Get the `created` field from a `CoreProperties`.
 * # Safety
 * Pointer must be a valid handle returned by this library.
 */
char *kreuzberg_core_properties_created(const KREUZBERGCoreProperties *ptr);

/**
 * Get the `modified` field from a `CoreProperties`.
 * # Safety
 * Pointer must be a valid handle returned by this library.
 */
char *kreuzberg_core_properties_modified(const KREUZBERGCoreProperties *ptr);

/**
 * Get the `category` field from a `CoreProperties`.
 * # Safety
 * Pointer must be a valid handle returned by this library.
 */
char *kreuzberg_core_properties_category(const KREUZBERGCoreProperties *ptr);

/**
 * Get the `content_status` field from a `CoreProperties`.
 * # Safety
 * Pointer must be a valid handle returned by this library.
 */
char *kreuzberg_core_properties_content_status(const KREUZBERGCoreProperties *ptr);

/**
 * Get the `language` field from a `CoreProperties`.
 * # Safety
 * Pointer must be a valid handle returned by this library.
 */
char *kreuzberg_core_properties_language(const KREUZBERGCoreProperties *ptr);

/**
 * Get the `identifier` field from a `CoreProperties`.
 * # Safety
 * Pointer must be a valid handle returned by this library.
 */
char *kreuzberg_core_properties_identifier(const KREUZBERGCoreProperties *ptr);

/**
 * Get the `version` field from a `CoreProperties`.
 * # Safety
 * Pointer must be a valid handle returned by this library.
 */
char *kreuzberg_core_properties_version(const KREUZBERGCoreProperties *ptr);

/**
 * Get the `last_printed` field from a `CoreProperties`.
 * # Safety
 * Pointer must be a valid handle returned by this library.
 */
char *kreuzberg_core_properties_last_printed(const KREUZBERGCoreProperties *ptr);

/**
 * Create a `SecurityLimits` from a JSON string. Returns null on failure.
 * # Safety
 * JSON string must be valid UTF-8 and null-terminated.
 * Returned handle must be freed with `kreuzberg_security_limits_free`.
 */
KREUZBERGSecurityLimits *kreuzberg_security_limits_from_json(const char *json);

/**
 * Serialize a `SecurityLimits` to a JSON string. Returns null on failure.
 * # Safety
 * `ptr` must be a valid, non-null pointer returned by a `kreuzberg` function.
 * The returned string must be freed with `kreuzberg_free_string`.
 */
char *kreuzberg_security_limits_to_json(const KREUZBERGSecurityLimits *ptr);

/**
 * Free a `SecurityLimits` handle.
 * # Safety
 * Pointer must have been returned by this library, or be null.
 */
void kreuzberg_security_limits_free(KREUZBERGSecurityLimits *ptr);

/**
 * Get the `max_archive_size` field from a `SecurityLimits`.
 * # Safety
 * Pointer must be a valid handle returned by this library.
 */
uintptr_t kreuzberg_security_limits_max_archive_size(const KREUZBERGSecurityLimits *ptr);

/**
 * Get the `max_compression_ratio` field from a `SecurityLimits`.
 * # Safety
 * Pointer must be a valid handle returned by this library.
 */
uintptr_t kreuzberg_security_limits_max_compression_ratio(const KREUZBERGSecurityLimits *ptr);

/**
 * Get the `max_files_in_archive` field from a `SecurityLimits`.
 * # Safety
 * Pointer must be a valid handle returned by this library.
 */
uintptr_t kreuzberg_security_limits_max_files_in_archive(const KREUZBERGSecurityLimits *ptr);

/**
 * Get the `max_nesting_depth` field from a `SecurityLimits`.
 * # Safety
 * Pointer must be a valid handle returned by this library.
 */
uintptr_t kreuzberg_security_limits_max_nesting_depth(const KREUZBERGSecurityLimits *ptr);

/**
 * Get the `max_entity_length` field from a `SecurityLimits`.
 * # Safety
 * Pointer must be a valid handle returned by this library.
 */
uintptr_t kreuzberg_security_limits_max_entity_length(const KREUZBERGSecurityLimits *ptr);

/**
 * Get the `max_content_size` field from a `SecurityLimits`.
 * # Safety
 * Pointer must be a valid handle returned by this library.
 */
uintptr_t kreuzberg_security_limits_max_content_size(const KREUZBERGSecurityLimits *ptr);

/**
 * Get the `max_iterations` field from a `SecurityLimits`.
 * # Safety
 * Pointer must be a valid handle returned by this library.
 */
uintptr_t kreuzberg_security_limits_max_iterations(const KREUZBERGSecurityLimits *ptr);

/**
 * Get the `max_xml_depth` field from a `SecurityLimits`.
 * # Safety
 * Pointer must be a valid handle returned by this library.
 */
uintptr_t kreuzberg_security_limits_max_xml_depth(const KREUZBERGSecurityLimits *ptr);

/**
 * Get the `max_table_cells` field from a `SecurityLimits`.
 * # Safety
 * Pointer must be a valid handle returned by this library.
 */
uintptr_t kreuzberg_security_limits_max_table_cells(const KREUZBERGSecurityLimits *ptr);

/**
 * \note SAFETY: Caller must ensure all pointer arguments are valid or null. Returned pointers must be
 * freed with the appropriate free function.
 */
KREUZBERGSecurityLimits *kreuzberg_security_limits_default(void);

/**
 * Create a `TokenReductionConfig` from a JSON string. Returns null on failure.
 * # Safety
 * JSON string must be valid UTF-8 and null-terminated.
 * Returned handle must be freed with `kreuzberg_token_reduction_config_free`.
 */
KREUZBERGTokenReductionConfig *kreuzberg_token_reduction_config_from_json(const char *json);

/**
 * Serialize a `TokenReductionConfig` to a JSON string. Returns null on failure.
 * # Safety
 * `ptr` must be a valid, non-null pointer returned by a `kreuzberg` function.
 * The returned string must be freed with `kreuzberg_free_string`.
 */
char *kreuzberg_token_reduction_config_to_json(const KREUZBERGTokenReductionConfig *ptr);

/**
 * Free a `TokenReductionConfig` handle.
 * # Safety
 * Pointer must have been returned by this library, or be null.
 */
void kreuzberg_token_reduction_config_free(KREUZBERGTokenReductionConfig *ptr);

/**
 * Get the `level` field from a `TokenReductionConfig`.
 * # Safety
 * Pointer must be a valid handle returned by this library.
 */
KREUZBERGReductionLevel *kreuzberg_token_reduction_config_level(const KREUZBERGTokenReductionConfig *ptr);

/**
 * Get the `language_hint` field from a `TokenReductionConfig`.
 * # Safety
 * Pointer must be a valid handle returned by this library.
 */
char *kreuzberg_token_reduction_config_language_hint(const KREUZBERGTokenReductionConfig *ptr);

/**
 * Get the `preserve_markdown` field from a `TokenReductionConfig`.
 * # Safety
 * Pointer must be a valid handle returned by this library.
 */
int32_t kreuzberg_token_reduction_config_preserve_markdown(const KREUZBERGTokenReductionConfig *ptr);

/**
 * Get the `preserve_code` field from a `TokenReductionConfig`.
 * # Safety
 * Pointer must be a valid handle returned by this library.
 */
int32_t kreuzberg_token_reduction_config_preserve_code(const KREUZBERGTokenReductionConfig *ptr);

/**
 * Get the `semantic_threshold` field from a `TokenReductionConfig`.
 * # Safety
 * Pointer must be a valid handle returned by this library.
 */
float kreuzberg_token_reduction_config_semantic_threshold(const KREUZBERGTokenReductionConfig *ptr);

/**
 * Get the `enable_parallel` field from a `TokenReductionConfig`.
 * # Safety
 * Pointer must be a valid handle returned by this library.
 */
int32_t kreuzberg_token_reduction_config_enable_parallel(const KREUZBERGTokenReductionConfig *ptr);

/**
 * Get the `use_simd` field from a `TokenReductionConfig`.
 * # Safety
 * Pointer must be a valid handle returned by this library.
 */
int32_t kreuzberg_token_reduction_config_use_simd(const KREUZBERGTokenReductionConfig *ptr);

/**
 * Get the `custom_stopwords` field from a `TokenReductionConfig`.
 * # Safety
 * Pointer must be a valid handle returned by this library.
 */
char *kreuzberg_token_reduction_config_custom_stopwords(const KREUZBERGTokenReductionConfig *ptr);

/**
 * Get the `preserve_patterns` field from a `TokenReductionConfig`.
 * # Safety
 * Pointer must be a valid handle returned by this library.
 */
char *kreuzberg_token_reduction_config_preserve_patterns(const KREUZBERGTokenReductionConfig *ptr);

/**
 * Get the `target_reduction` field from a `TokenReductionConfig`.
 * # Safety
 * Pointer must be a valid handle returned by this library.
 */
float kreuzberg_token_reduction_config_target_reduction(const KREUZBERGTokenReductionConfig *ptr);

/**
 * Get the `enable_semantic_clustering` field from a `TokenReductionConfig`.
 * # Safety
 * Pointer must be a valid handle returned by this library.
 */
int32_t kreuzberg_token_reduction_config_enable_semantic_clustering(const KREUZBERGTokenReductionConfig *ptr);

/**
 * \note SAFETY: Caller must ensure all pointer arguments are valid or null. Returned pointers must be
 * freed with the appropriate free function.
 */
KREUZBERGTokenReductionConfig *kreuzberg_token_reduction_config_default(void);

/**
 * Create a `PdfAnnotation` from a JSON string. Returns null on failure.
 * # Safety
 * JSON string must be valid UTF-8 and null-terminated.
 * Returned handle must be freed with `kreuzberg_pdf_annotation_free`.
 */
KREUZBERGPdfAnnotation *kreuzberg_pdf_annotation_from_json(const char *json);

/**
 * Serialize a `PdfAnnotation` to a JSON string. Returns null on failure.
 * # Safety
 * `ptr` must be a valid, non-null pointer returned by a `kreuzberg` function.
 * The returned string must be freed with `kreuzberg_free_string`.
 */
char *kreuzberg_pdf_annotation_to_json(const KREUZBERGPdfAnnotation *ptr);

/**
 * Free a `PdfAnnotation` handle.
 * # Safety
 * Pointer must have been returned by this library, or be null.
 */
void kreuzberg_pdf_annotation_free(KREUZBERGPdfAnnotation *ptr);

/**
 * Get the `annotation_type` field from a `PdfAnnotation`.
 * # Safety
 * Pointer must be a valid handle returned by this library.
 */
KREUZBERGPdfAnnotationType *kreuzberg_pdf_annotation_annotation_type(const KREUZBERGPdfAnnotation *ptr);

/**
 * Get the `content` field from a `PdfAnnotation`.
 * # Safety
 * Pointer must be a valid handle returned by this library.
 */
char *kreuzberg_pdf_annotation_content(const KREUZBERGPdfAnnotation *ptr);

/**
 * Get the `page_number` field from a `PdfAnnotation`.
 * # Safety
 * Pointer must be a valid handle returned by this library.
 */
uint32_t kreuzberg_pdf_annotation_page_number(const KREUZBERGPdfAnnotation *ptr);

/**
 * Get the `bounding_box` field from a `PdfAnnotation`.
 * # Safety
 * Pointer must be a valid handle returned by this library.
 */
KREUZBERGBoundingBox *kreuzberg_pdf_annotation_bounding_box(const KREUZBERGPdfAnnotation *ptr);

/**
 * Create a `DjotContent` from a JSON string. Returns null on failure.
 * # Safety
 * JSON string must be valid UTF-8 and null-terminated.
 * Returned handle must be freed with `kreuzberg_djot_content_free`.
 */
KREUZBERGDjotContent *kreuzberg_djot_content_from_json(const char *json);

/**
 * Serialize a `DjotContent` to a JSON string. Returns null on failure.
 * # Safety
 * `ptr` must be a valid, non-null pointer returned by a `kreuzberg` function.
 * The returned string must be freed with `kreuzberg_free_string`.
 */
char *kreuzberg_djot_content_to_json(const KREUZBERGDjotContent *ptr);

/**
 * Free a `DjotContent` handle.
 * # Safety
 * Pointer must have been returned by this library, or be null.
 */
void kreuzberg_djot_content_free(KREUZBERGDjotContent *ptr);

/**
 * Get the `plain_text` field from a `DjotContent`.
 * # Safety
 * Pointer must be a valid handle returned by this library.
 */
char *kreuzberg_djot_content_plain_text(const KREUZBERGDjotContent *ptr);

/**
 * Get the `blocks` field from a `DjotContent`.
 * # Safety
 * Pointer must be a valid handle returned by this library.
 */
char *kreuzberg_djot_content_blocks(const KREUZBERGDjotContent *ptr);

/**
 * Get the `metadata` field from a `DjotContent`.
 * # Safety
 * Pointer must be a valid handle returned by this library.
 */
KREUZBERGMetadata *kreuzberg_djot_content_metadata(const KREUZBERGDjotContent *ptr);

/**
 * Get the `tables` field from a `DjotContent`.
 * # Safety
 * Pointer must be a valid handle returned by this library.
 */
char *kreuzberg_djot_content_tables(const KREUZBERGDjotContent *ptr);

/**
 * Get the `images` field from a `DjotContent`.
 * # Safety
 * Pointer must be a valid handle returned by this library.
 */
char *kreuzberg_djot_content_images(const KREUZBERGDjotContent *ptr);

/**
 * Get the `links` field from a `DjotContent`.
 * # Safety
 * Pointer must be a valid handle returned by this library.
 */
char *kreuzberg_djot_content_links(const KREUZBERGDjotContent *ptr);

/**
 * Get the `footnotes` field from a `DjotContent`.
 * # Safety
 * Pointer must be a valid handle returned by this library.
 */
char *kreuzberg_djot_content_footnotes(const KREUZBERGDjotContent *ptr);

/**
 * Create a `FormattedBlock` from a JSON string. Returns null on failure.
 * # Safety
 * JSON string must be valid UTF-8 and null-terminated.
 * Returned handle must be freed with `kreuzberg_formatted_block_free`.
 */
KREUZBERGFormattedBlock *kreuzberg_formatted_block_from_json(const char *json);

/**
 * Serialize a `FormattedBlock` to a JSON string. Returns null on failure.
 * # Safety
 * `ptr` must be a valid, non-null pointer returned by a `kreuzberg` function.
 * The returned string must be freed with `kreuzberg_free_string`.
 */
char *kreuzberg_formatted_block_to_json(const KREUZBERGFormattedBlock *ptr);

/**
 * Free a `FormattedBlock` handle.
 * # Safety
 * Pointer must have been returned by this library, or be null.
 */
void kreuzberg_formatted_block_free(KREUZBERGFormattedBlock *ptr);

/**
 * Get the `block_type` field from a `FormattedBlock`.
 * # Safety
 * Pointer must be a valid handle returned by this library.
 */
KREUZBERGBlockType *kreuzberg_formatted_block_block_type(const KREUZBERGFormattedBlock *ptr);

/**
 * Get the `level` field from a `FormattedBlock`.
 * # Safety
 * Pointer must be a valid handle returned by this library.
 */
uintptr_t kreuzberg_formatted_block_level(const KREUZBERGFormattedBlock *ptr);

/**
 * Get the `inline_content` field from a `FormattedBlock`.
 * # Safety
 * Pointer must be a valid handle returned by this library.
 */
char *kreuzberg_formatted_block_inline_content(const KREUZBERGFormattedBlock *ptr);

/**
 * Get the `language` field from a `FormattedBlock`.
 * # Safety
 * Pointer must be a valid handle returned by this library.
 */
char *kreuzberg_formatted_block_language(const KREUZBERGFormattedBlock *ptr);

/**
 * Get the `code` field from a `FormattedBlock`.
 * # Safety
 * Pointer must be a valid handle returned by this library.
 */
char *kreuzberg_formatted_block_code(const KREUZBERGFormattedBlock *ptr);

/**
 * Get the `children` field from a `FormattedBlock`.
 * # Safety
 * Pointer must be a valid handle returned by this library.
 */
char *kreuzberg_formatted_block_children(const KREUZBERGFormattedBlock *ptr);

/**
 * Create a `InlineElement` from a JSON string. Returns null on failure.
 * # Safety
 * JSON string must be valid UTF-8 and null-terminated.
 * Returned handle must be freed with `kreuzberg_inline_element_free`.
 */
KREUZBERGInlineElement *kreuzberg_inline_element_from_json(const char *json);

/**
 * Serialize a `InlineElement` to a JSON string. Returns null on failure.
 * # Safety
 * `ptr` must be a valid, non-null pointer returned by a `kreuzberg` function.
 * The returned string must be freed with `kreuzberg_free_string`.
 */
char *kreuzberg_inline_element_to_json(const KREUZBERGInlineElement *ptr);

/**
 * Free a `InlineElement` handle.
 * # Safety
 * Pointer must have been returned by this library, or be null.
 */
void kreuzberg_inline_element_free(KREUZBERGInlineElement *ptr);

/**
 * Get the `element_type` field from a `InlineElement`.
 * # Safety
 * Pointer must be a valid handle returned by this library.
 */
KREUZBERGInlineType *kreuzberg_inline_element_element_type(const KREUZBERGInlineElement *ptr);

/**
 * Get the `content` field from a `InlineElement`.
 * # Safety
 * Pointer must be a valid handle returned by this library.
 */
char *kreuzberg_inline_element_content(const KREUZBERGInlineElement *ptr);

/**
 * Get the `metadata` field from a `InlineElement`.
 * # Safety
 * Pointer must be a valid handle returned by this library.
 */
char *kreuzberg_inline_element_metadata(const KREUZBERGInlineElement *ptr);

/**
 * Create a `DjotImage` from a JSON string. Returns null on failure.
 * # Safety
 * JSON string must be valid UTF-8 and null-terminated.
 * Returned handle must be freed with `kreuzberg_djot_image_free`.
 */
KREUZBERGDjotImage *kreuzberg_djot_image_from_json(const char *json);

/**
 * Serialize a `DjotImage` to a JSON string. Returns null on failure.
 * # Safety
 * `ptr` must be a valid, non-null pointer returned by a `kreuzberg` function.
 * The returned string must be freed with `kreuzberg_free_string`.
 */
char *kreuzberg_djot_image_to_json(const KREUZBERGDjotImage *ptr);

/**
 * Free a `DjotImage` handle.
 * # Safety
 * Pointer must have been returned by this library, or be null.
 */
void kreuzberg_djot_image_free(KREUZBERGDjotImage *ptr);

/**
 * Get the `src` field from a `DjotImage`.
 * # Safety
 * Pointer must be a valid handle returned by this library.
 */
char *kreuzberg_djot_image_src(const KREUZBERGDjotImage *ptr);

/**
 * Get the `alt` field from a `DjotImage`.
 * # Safety
 * Pointer must be a valid handle returned by this library.
 */
char *kreuzberg_djot_image_alt(const KREUZBERGDjotImage *ptr);

/**
 * Get the `title` field from a `DjotImage`.
 * # Safety
 * Pointer must be a valid handle returned by this library.
 */
char *kreuzberg_djot_image_title(const KREUZBERGDjotImage *ptr);

/**
 * Create a `DjotLink` from a JSON string. Returns null on failure.
 * # Safety
 * JSON string must be valid UTF-8 and null-terminated.
 * Returned handle must be freed with `kreuzberg_djot_link_free`.
 */
KREUZBERGDjotLink *kreuzberg_djot_link_from_json(const char *json);

/**
 * Serialize a `DjotLink` to a JSON string. Returns null on failure.
 * # Safety
 * `ptr` must be a valid, non-null pointer returned by a `kreuzberg` function.
 * The returned string must be freed with `kreuzberg_free_string`.
 */
char *kreuzberg_djot_link_to_json(const KREUZBERGDjotLink *ptr);

/**
 * Free a `DjotLink` handle.
 * # Safety
 * Pointer must have been returned by this library, or be null.
 */
void kreuzberg_djot_link_free(KREUZBERGDjotLink *ptr);

/**
 * Get the `url` field from a `DjotLink`.
 * # Safety
 * Pointer must be a valid handle returned by this library.
 */
char *kreuzberg_djot_link_url(const KREUZBERGDjotLink *ptr);

/**
 * Get the `text` field from a `DjotLink`.
 * # Safety
 * Pointer must be a valid handle returned by this library.
 */
char *kreuzberg_djot_link_text(const KREUZBERGDjotLink *ptr);

/**
 * Get the `title` field from a `DjotLink`.
 * # Safety
 * Pointer must be a valid handle returned by this library.
 */
char *kreuzberg_djot_link_title(const KREUZBERGDjotLink *ptr);

/**
 * Create a `Footnote` from a JSON string. Returns null on failure.
 * # Safety
 * JSON string must be valid UTF-8 and null-terminated.
 * Returned handle must be freed with `kreuzberg_footnote_free`.
 */
KREUZBERGFootnote *kreuzberg_footnote_from_json(const char *json);

/**
 * Serialize a `Footnote` to a JSON string. Returns null on failure.
 * # Safety
 * `ptr` must be a valid, non-null pointer returned by a `kreuzberg` function.
 * The returned string must be freed with `kreuzberg_free_string`.
 */
char *kreuzberg_footnote_to_json(const KREUZBERGFootnote *ptr);

/**
 * Free a `Footnote` handle.
 * # Safety
 * Pointer must have been returned by this library, or be null.
 */
void kreuzberg_footnote_free(KREUZBERGFootnote *ptr);

/**
 * Get the `label` field from a `Footnote`.
 * # Safety
 * Pointer must be a valid handle returned by this library.
 */
char *kreuzberg_footnote_label(const KREUZBERGFootnote *ptr);

/**
 * Get the `content` field from a `Footnote`.
 * # Safety
 * Pointer must be a valid handle returned by this library.
 */
char *kreuzberg_footnote_content(const KREUZBERGFootnote *ptr);

/**
 * Create a `DocumentStructure` from a JSON string. Returns null on failure.
 * # Safety
 * JSON string must be valid UTF-8 and null-terminated.
 * Returned handle must be freed with `kreuzberg_document_structure_free`.
 */
KREUZBERGDocumentStructure *kreuzberg_document_structure_from_json(const char *json);

/**
 * Serialize a `DocumentStructure` to a JSON string. Returns null on failure.
 * # Safety
 * `ptr` must be a valid, non-null pointer returned by a `kreuzberg` function.
 * The returned string must be freed with `kreuzberg_free_string`.
 */
char *kreuzberg_document_structure_to_json(const KREUZBERGDocumentStructure *ptr);

/**
 * Free a `DocumentStructure` handle.
 * # Safety
 * Pointer must have been returned by this library, or be null.
 */
void kreuzberg_document_structure_free(KREUZBERGDocumentStructure *ptr);

/**
 * Get the `nodes` field from a `DocumentStructure`.
 * # Safety
 * Pointer must be a valid handle returned by this library.
 */
char *kreuzberg_document_structure_nodes(const KREUZBERGDocumentStructure *ptr);

/**
 * Get the `source_format` field from a `DocumentStructure`.
 * # Safety
 * Pointer must be a valid handle returned by this library.
 */
char *kreuzberg_document_structure_source_format(const KREUZBERGDocumentStructure *ptr);

/**
 * Get the `relationships` field from a `DocumentStructure`.
 * # Safety
 * Pointer must be a valid handle returned by this library.
 */
char *kreuzberg_document_structure_relationships(const KREUZBERGDocumentStructure *ptr);

/**
 * Get the `node_types` field from a `DocumentStructure`.
 * # Safety
 * Pointer must be a valid handle returned by this library.
 */
char *kreuzberg_document_structure_node_types(const KREUZBERGDocumentStructure *ptr);

/**
 * Compute and populate the `node_types` field from the current `nodes`.
 *
 * Call this after all nodes have been added to the structure. Internal
 * construction paths (builder, derivation) call this automatically.
 * \note SAFETY: Caller must ensure all pointer arguments are valid or null. Returned pointers must be
 * freed with the appropriate free function.
 * \code
 * use kreuzberg::types::document_structure::{DocumentStructure, DocumentNode, NodeContent, NodeId};
 *
 * let mut structure = DocumentStructure {
 *     nodes: vec![DocumentNode {
 *         id: NodeId::from("n1"),
 *         content: NodeContent::Paragraph { text: "Hello".into() },
 *         parent: None,
 *         children: vec![],
 *         content_layer: Default::default(),
 *         page: None,
 *         page_end: None,
 *         bbox: None,
 *         annotations: vec![],
 *         attributes: None,
 *     }],
 *     source_format: None,
 *     relationships: vec![],
 *     node_types: vec![],
 * };
 * structure.finalize_node_types();
 * assert!(structure.node_types.contains(&"paragraph".to_string()));
 * \endcode
 */
void kreuzberg_document_structure_finalize_node_types(KREUZBERGDocumentStructure *this_);

/**
 * Check if the document structure is empty.
 * \note SAFETY: Caller must ensure all pointer arguments are valid or null. Returned pointers must be
 * freed with the appropriate free function.
 */
int32_t kreuzberg_document_structure_is_empty(const KREUZBERGDocumentStructure *this_);

/**
 * \note SAFETY: Caller must ensure all pointer arguments are valid or null. Returned pointers must be
 * freed with the appropriate free function.
 */
KREUZBERGDocumentStructure *kreuzberg_document_structure_default(void);

/**
 * Create a `DocumentRelationship` from a JSON string. Returns null on failure.
 * # Safety
 * JSON string must be valid UTF-8 and null-terminated.
 * Returned handle must be freed with `kreuzberg_document_relationship_free`.
 */
KREUZBERGDocumentRelationship *kreuzberg_document_relationship_from_json(const char *json);

/**
 * Serialize a `DocumentRelationship` to a JSON string. Returns null on failure.
 * # Safety
 * `ptr` must be a valid, non-null pointer returned by a `kreuzberg` function.
 * The returned string must be freed with `kreuzberg_free_string`.
 */
char *kreuzberg_document_relationship_to_json(const KREUZBERGDocumentRelationship *ptr);

/**
 * Free a `DocumentRelationship` handle.
 * # Safety
 * Pointer must have been returned by this library, or be null.
 */
void kreuzberg_document_relationship_free(KREUZBERGDocumentRelationship *ptr);

/**
 * Get the `source` field from a `DocumentRelationship`.
 * # Safety
 * Pointer must be a valid handle returned by this library.
 */
uint32_t kreuzberg_document_relationship_source(const KREUZBERGDocumentRelationship *ptr);

/**
 * Get the `target` field from a `DocumentRelationship`.
 * # Safety
 * Pointer must be a valid handle returned by this library.
 */
uint32_t kreuzberg_document_relationship_target(const KREUZBERGDocumentRelationship *ptr);

/**
 * Get the `kind` field from a `DocumentRelationship`.
 * # Safety
 * Pointer must be a valid handle returned by this library.
 */
KREUZBERGRelationshipKind *kreuzberg_document_relationship_kind(const KREUZBERGDocumentRelationship *ptr);

/**
 * Create a `DocumentNode` from a JSON string. Returns null on failure.
 * # Safety
 * JSON string must be valid UTF-8 and null-terminated.
 * Returned handle must be freed with `kreuzberg_document_node_free`.
 */
KREUZBERGDocumentNode *kreuzberg_document_node_from_json(const char *json);

/**
 * Serialize a `DocumentNode` to a JSON string. Returns null on failure.
 * # Safety
 * `ptr` must be a valid, non-null pointer returned by a `kreuzberg` function.
 * The returned string must be freed with `kreuzberg_free_string`.
 */
char *kreuzberg_document_node_to_json(const KREUZBERGDocumentNode *ptr);

/**
 * Free a `DocumentNode` handle.
 * # Safety
 * Pointer must have been returned by this library, or be null.
 */
void kreuzberg_document_node_free(KREUZBERGDocumentNode *ptr);

/**
 * Get the `content` field from a `DocumentNode`.
 * # Safety
 * Pointer must be a valid handle returned by this library.
 */
KREUZBERGNodeContent *kreuzberg_document_node_content(const KREUZBERGDocumentNode *ptr);

/**
 * Get the `parent` field from a `DocumentNode`.
 * # Safety
 * Pointer must be a valid handle returned by this library.
 */
uint32_t kreuzberg_document_node_parent(const KREUZBERGDocumentNode *ptr);

/**
 * Get the `children` field from a `DocumentNode`.
 * # Safety
 * Pointer must be a valid handle returned by this library.
 */
char *kreuzberg_document_node_children(const KREUZBERGDocumentNode *ptr);

/**
 * Get the `content_layer` field from a `DocumentNode`.
 * # Safety
 * Pointer must be a valid handle returned by this library.
 */
KREUZBERGContentLayer *kreuzberg_document_node_content_layer(const KREUZBERGDocumentNode *ptr);

/**
 * Get the `page` field from a `DocumentNode`.
 * # Safety
 * Pointer must be a valid handle returned by this library.
 */
uint32_t kreuzberg_document_node_page(const KREUZBERGDocumentNode *ptr);

/**
 * Get the `page_end` field from a `DocumentNode`.
 * # Safety
 * Pointer must be a valid handle returned by this library.
 */
uint32_t kreuzberg_document_node_page_end(const KREUZBERGDocumentNode *ptr);

/**
 * Get the `bbox` field from a `DocumentNode`.
 * # Safety
 * Pointer must be a valid handle returned by this library.
 */
KREUZBERGBoundingBox *kreuzberg_document_node_bbox(const KREUZBERGDocumentNode *ptr);

/**
 * Get the `annotations` field from a `DocumentNode`.
 * # Safety
 * Pointer must be a valid handle returned by this library.
 */
char *kreuzberg_document_node_annotations(const KREUZBERGDocumentNode *ptr);

/**
 * Get the `attributes` field from a `DocumentNode`.
 * # Safety
 * Pointer must be a valid handle returned by this library.
 */
char *kreuzberg_document_node_attributes(const KREUZBERGDocumentNode *ptr);

/**
 * Create a `TableGrid` from a JSON string. Returns null on failure.
 * # Safety
 * JSON string must be valid UTF-8 and null-terminated.
 * Returned handle must be freed with `kreuzberg_table_grid_free`.
 */
KREUZBERGTableGrid *kreuzberg_table_grid_from_json(const char *json);

/**
 * Serialize a `TableGrid` to a JSON string. Returns null on failure.
 * # Safety
 * `ptr` must be a valid, non-null pointer returned by a `kreuzberg` function.
 * The returned string must be freed with `kreuzberg_free_string`.
 */
char *kreuzberg_table_grid_to_json(const KREUZBERGTableGrid *ptr);

/**
 * Free a `TableGrid` handle.
 * # Safety
 * Pointer must have been returned by this library, or be null.
 */
void kreuzberg_table_grid_free(KREUZBERGTableGrid *ptr);

/**
 * Get the `rows` field from a `TableGrid`.
 * # Safety
 * Pointer must be a valid handle returned by this library.
 */
uint32_t kreuzberg_table_grid_rows(const KREUZBERGTableGrid *ptr);

/**
 * Get the `cols` field from a `TableGrid`.
 * # Safety
 * Pointer must be a valid handle returned by this library.
 */
uint32_t kreuzberg_table_grid_cols(const KREUZBERGTableGrid *ptr);

/**
 * Get the `cells` field from a `TableGrid`.
 * # Safety
 * Pointer must be a valid handle returned by this library.
 */
char *kreuzberg_table_grid_cells(const KREUZBERGTableGrid *ptr);

/**
 * Create a `GridCell` from a JSON string. Returns null on failure.
 * # Safety
 * JSON string must be valid UTF-8 and null-terminated.
 * Returned handle must be freed with `kreuzberg_grid_cell_free`.
 */
KREUZBERGGridCell *kreuzberg_grid_cell_from_json(const char *json);

/**
 * Serialize a `GridCell` to a JSON string. Returns null on failure.
 * # Safety
 * `ptr` must be a valid, non-null pointer returned by a `kreuzberg` function.
 * The returned string must be freed with `kreuzberg_free_string`.
 */
char *kreuzberg_grid_cell_to_json(const KREUZBERGGridCell *ptr);

/**
 * Free a `GridCell` handle.
 * # Safety
 * Pointer must have been returned by this library, or be null.
 */
void kreuzberg_grid_cell_free(KREUZBERGGridCell *ptr);

/**
 * Get the `content` field from a `GridCell`.
 * # Safety
 * Pointer must be a valid handle returned by this library.
 */
char *kreuzberg_grid_cell_content(const KREUZBERGGridCell *ptr);

/**
 * Get the `row` field from a `GridCell`.
 * # Safety
 * Pointer must be a valid handle returned by this library.
 */
uint32_t kreuzberg_grid_cell_row(const KREUZBERGGridCell *ptr);

/**
 * Get the `col` field from a `GridCell`.
 * # Safety
 * Pointer must be a valid handle returned by this library.
 */
uint32_t kreuzberg_grid_cell_col(const KREUZBERGGridCell *ptr);

/**
 * Get the `row_span` field from a `GridCell`.
 * # Safety
 * Pointer must be a valid handle returned by this library.
 */
uint32_t kreuzberg_grid_cell_row_span(const KREUZBERGGridCell *ptr);

/**
 * Get the `col_span` field from a `GridCell`.
 * # Safety
 * Pointer must be a valid handle returned by this library.
 */
uint32_t kreuzberg_grid_cell_col_span(const KREUZBERGGridCell *ptr);

/**
 * Get the `is_header` field from a `GridCell`.
 * # Safety
 * Pointer must be a valid handle returned by this library.
 */
int32_t kreuzberg_grid_cell_is_header(const KREUZBERGGridCell *ptr);

/**
 * Get the `bbox` field from a `GridCell`.
 * # Safety
 * Pointer must be a valid handle returned by this library.
 */
KREUZBERGBoundingBox *kreuzberg_grid_cell_bbox(const KREUZBERGGridCell *ptr);

/**
 * Create a `TextAnnotation` from a JSON string. Returns null on failure.
 * # Safety
 * JSON string must be valid UTF-8 and null-terminated.
 * Returned handle must be freed with `kreuzberg_text_annotation_free`.
 */
KREUZBERGTextAnnotation *kreuzberg_text_annotation_from_json(const char *json);

/**
 * Serialize a `TextAnnotation` to a JSON string. Returns null on failure.
 * # Safety
 * `ptr` must be a valid, non-null pointer returned by a `kreuzberg` function.
 * The returned string must be freed with `kreuzberg_free_string`.
 */
char *kreuzberg_text_annotation_to_json(const KREUZBERGTextAnnotation *ptr);

/**
 * Free a `TextAnnotation` handle.
 * # Safety
 * Pointer must have been returned by this library, or be null.
 */
void kreuzberg_text_annotation_free(KREUZBERGTextAnnotation *ptr);

/**
 * Get the `start` field from a `TextAnnotation`.
 * # Safety
 * Pointer must be a valid handle returned by this library.
 */
uint32_t kreuzberg_text_annotation_start(const KREUZBERGTextAnnotation *ptr);

/**
 * Get the `end` field from a `TextAnnotation`.
 * # Safety
 * Pointer must be a valid handle returned by this library.
 */
uint32_t kreuzberg_text_annotation_end(const KREUZBERGTextAnnotation *ptr);

/**
 * Get the `kind` field from a `TextAnnotation`.
 * # Safety
 * Pointer must be a valid handle returned by this library.
 */
KREUZBERGAnnotationKind *kreuzberg_text_annotation_kind(const KREUZBERGTextAnnotation *ptr);

/**
 * Create a `ExtractionResult` from a JSON string. Returns null on failure.
 * # Safety
 * JSON string must be valid UTF-8 and null-terminated.
 * Returned handle must be freed with `kreuzberg_extraction_result_free`.
 */
KREUZBERGExtractionResult *kreuzberg_extraction_result_from_json(const char *json);

/**
 * Serialize a `ExtractionResult` to a JSON string. Returns null on failure.
 * # Safety
 * `ptr` must be a valid, non-null pointer returned by a `kreuzberg` function.
 * The returned string must be freed with `kreuzberg_free_string`.
 */
char *kreuzberg_extraction_result_to_json(const KREUZBERGExtractionResult *ptr);

/**
 * Free a `ExtractionResult` handle.
 * # Safety
 * Pointer must have been returned by this library, or be null.
 */
void kreuzberg_extraction_result_free(KREUZBERGExtractionResult *ptr);

/**
 * Get the `content` field from a `ExtractionResult`.
 * # Safety
 * Pointer must be a valid handle returned by this library.
 */
char *kreuzberg_extraction_result_content(const KREUZBERGExtractionResult *ptr);

/**
 * Get the `mime_type` field from a `ExtractionResult`.
 * # Safety
 * Pointer must be a valid handle returned by this library.
 */
char *kreuzberg_extraction_result_mime_type(const KREUZBERGExtractionResult *ptr);

/**
 * Get the `metadata` field from a `ExtractionResult`.
 * # Safety
 * Pointer must be a valid handle returned by this library.
 */
KREUZBERGMetadata *kreuzberg_extraction_result_metadata(const KREUZBERGExtractionResult *ptr);

/**
 * Get the `extraction_method` field from a `ExtractionResult`.
 * # Safety
 * Pointer must be a valid handle returned by this library.
 */
KREUZBERGExtractionMethod *kreuzberg_extraction_result_extraction_method(const KREUZBERGExtractionResult *ptr);

/**
 * Get the `tables` field from a `ExtractionResult`.
 * # Safety
 * Pointer must be a valid handle returned by this library.
 */
char *kreuzberg_extraction_result_tables(const KREUZBERGExtractionResult *ptr);

/**
 * Get the `detected_languages` field from a `ExtractionResult`.
 * # Safety
 * Pointer must be a valid handle returned by this library.
 */
char *kreuzberg_extraction_result_detected_languages(const KREUZBERGExtractionResult *ptr);

/**
 * Get the `chunks` field from a `ExtractionResult`.
 * # Safety
 * Pointer must be a valid handle returned by this library.
 */
char *kreuzberg_extraction_result_chunks(const KREUZBERGExtractionResult *ptr);

/**
 * Get the `images` field from a `ExtractionResult`.
 * # Safety
 * Pointer must be a valid handle returned by this library.
 */
char *kreuzberg_extraction_result_images(const KREUZBERGExtractionResult *ptr);

/**
 * Get the `pages` field from a `ExtractionResult`.
 * # Safety
 * Pointer must be a valid handle returned by this library.
 */
char *kreuzberg_extraction_result_pages(const KREUZBERGExtractionResult *ptr);

/**
 * Get the `elements` field from a `ExtractionResult`.
 * # Safety
 * Pointer must be a valid handle returned by this library.
 */
char *kreuzberg_extraction_result_elements(const KREUZBERGExtractionResult *ptr);

/**
 * Get the `djot_content` field from a `ExtractionResult`.
 * # Safety
 * Pointer must be a valid handle returned by this library.
 */
KREUZBERGDjotContent *kreuzberg_extraction_result_djot_content(const KREUZBERGExtractionResult *ptr);

/**
 * Get the `ocr_elements` field from a `ExtractionResult`.
 * # Safety
 * Pointer must be a valid handle returned by this library.
 */
char *kreuzberg_extraction_result_ocr_elements(const KREUZBERGExtractionResult *ptr);

/**
 * Get the `document` field from a `ExtractionResult`.
 * # Safety
 * Pointer must be a valid handle returned by this library.
 */
KREUZBERGDocumentStructure *kreuzberg_extraction_result_document(const KREUZBERGExtractionResult *ptr);

/**
 * Get the `extracted_keywords` field from a `ExtractionResult`.
 * # Safety
 * Pointer must be a valid handle returned by this library.
 */
char *kreuzberg_extraction_result_extracted_keywords(const KREUZBERGExtractionResult *ptr);

/**
 * Get the `quality_score` field from a `ExtractionResult`.
 * # Safety
 * Pointer must be a valid handle returned by this library.
 */
double kreuzberg_extraction_result_quality_score(const KREUZBERGExtractionResult *ptr);

/**
 * Get the `processing_warnings` field from a `ExtractionResult`.
 * # Safety
 * Pointer must be a valid handle returned by this library.
 */
char *kreuzberg_extraction_result_processing_warnings(const KREUZBERGExtractionResult *ptr);

/**
 * Get the `annotations` field from a `ExtractionResult`.
 * # Safety
 * Pointer must be a valid handle returned by this library.
 */
char *kreuzberg_extraction_result_annotations(const KREUZBERGExtractionResult *ptr);

/**
 * Get the `children` field from a `ExtractionResult`.
 * # Safety
 * Pointer must be a valid handle returned by this library.
 */
char *kreuzberg_extraction_result_children(const KREUZBERGExtractionResult *ptr);

/**
 * Get the `uris` field from a `ExtractionResult`.
 * # Safety
 * Pointer must be a valid handle returned by this library.
 */
char *kreuzberg_extraction_result_uris(const KREUZBERGExtractionResult *ptr);

/**
 * Get the `revisions` field from a `ExtractionResult`.
 * # Safety
 * Pointer must be a valid handle returned by this library.
 */
char *kreuzberg_extraction_result_revisions(const KREUZBERGExtractionResult *ptr);

/**
 * Get the `structured_output` field from a `ExtractionResult`.
 * # Safety
 * Pointer must be a valid handle returned by this library.
 */
char *kreuzberg_extraction_result_structured_output(const KREUZBERGExtractionResult *ptr);

/**
 * Get the `code_intelligence` field from a `ExtractionResult`.
 * # Safety
 * Pointer must be a valid handle returned by this library.
 */
char *kreuzberg_extraction_result_code_intelligence(const KREUZBERGExtractionResult *ptr);

/**
 * Get the `llm_usage` field from a `ExtractionResult`.
 * # Safety
 * Pointer must be a valid handle returned by this library.
 */
char *kreuzberg_extraction_result_llm_usage(const KREUZBERGExtractionResult *ptr);

/**
 * Get the `formatted_content` field from a `ExtractionResult`.
 * # Safety
 * Pointer must be a valid handle returned by this library.
 */
char *kreuzberg_extraction_result_formatted_content(const KREUZBERGExtractionResult *ptr);

/**
 * Convert from an OCR result.
 * \note SAFETY: Caller must ensure all pointer arguments are valid or null. Returned pointers must be
 * freed with the appropriate free function.
 */
KREUZBERGExtractionResult *kreuzberg_extraction_result_from_ocr(const KREUZBERGOcrExtractionResult *ocr);

/**
 * Create a `ArchiveEntry` from a JSON string. Returns null on failure.
 * # Safety
 * JSON string must be valid UTF-8 and null-terminated.
 * Returned handle must be freed with `kreuzberg_archive_entry_free`.
 */
KREUZBERGArchiveEntry *kreuzberg_archive_entry_from_json(const char *json);

/**
 * Serialize a `ArchiveEntry` to a JSON string. Returns null on failure.
 * # Safety
 * `ptr` must be a valid, non-null pointer returned by a `kreuzberg` function.
 * The returned string must be freed with `kreuzberg_free_string`.
 */
char *kreuzberg_archive_entry_to_json(const KREUZBERGArchiveEntry *ptr);

/**
 * Free a `ArchiveEntry` handle.
 * # Safety
 * Pointer must have been returned by this library, or be null.
 */
void kreuzberg_archive_entry_free(KREUZBERGArchiveEntry *ptr);

/**
 * Get the `path` field from a `ArchiveEntry`.
 * # Safety
 * Pointer must be a valid handle returned by this library.
 */
char *kreuzberg_archive_entry_path(const KREUZBERGArchiveEntry *ptr);

/**
 * Get the `mime_type` field from a `ArchiveEntry`.
 * # Safety
 * Pointer must be a valid handle returned by this library.
 */
char *kreuzberg_archive_entry_mime_type(const KREUZBERGArchiveEntry *ptr);

/**
 * Get the `result` field from a `ArchiveEntry`.
 * # Safety
 * Pointer must be a valid handle returned by this library.
 */
KREUZBERGExtractionResult *kreuzberg_archive_entry_result(const KREUZBERGArchiveEntry *ptr);

/**
 * Create a `ProcessingWarning` from a JSON string. Returns null on failure.
 * # Safety
 * JSON string must be valid UTF-8 and null-terminated.
 * Returned handle must be freed with `kreuzberg_processing_warning_free`.
 */
KREUZBERGProcessingWarning *kreuzberg_processing_warning_from_json(const char *json);

/**
 * Serialize a `ProcessingWarning` to a JSON string. Returns null on failure.
 * # Safety
 * `ptr` must be a valid, non-null pointer returned by a `kreuzberg` function.
 * The returned string must be freed with `kreuzberg_free_string`.
 */
char *kreuzberg_processing_warning_to_json(const KREUZBERGProcessingWarning *ptr);

/**
 * Free a `ProcessingWarning` handle.
 * # Safety
 * Pointer must have been returned by this library, or be null.
 */
void kreuzberg_processing_warning_free(KREUZBERGProcessingWarning *ptr);

/**
 * Get the `source` field from a `ProcessingWarning`.
 * # Safety
 * Pointer must be a valid handle returned by this library.
 */
char *kreuzberg_processing_warning_source(const KREUZBERGProcessingWarning *ptr);

/**
 * Get the `message` field from a `ProcessingWarning`.
 * # Safety
 * Pointer must be a valid handle returned by this library.
 */
char *kreuzberg_processing_warning_message(const KREUZBERGProcessingWarning *ptr);

/**
 * Create a `LlmUsage` from a JSON string. Returns null on failure.
 * # Safety
 * JSON string must be valid UTF-8 and null-terminated.
 * Returned handle must be freed with `kreuzberg_llm_usage_free`.
 */
KREUZBERGLlmUsage *kreuzberg_llm_usage_from_json(const char *json);

/**
 * Serialize a `LlmUsage` to a JSON string. Returns null on failure.
 * # Safety
 * `ptr` must be a valid, non-null pointer returned by a `kreuzberg` function.
 * The returned string must be freed with `kreuzberg_free_string`.
 */
char *kreuzberg_llm_usage_to_json(const KREUZBERGLlmUsage *ptr);

/**
 * Free a `LlmUsage` handle.
 * # Safety
 * Pointer must have been returned by this library, or be null.
 */
void kreuzberg_llm_usage_free(KREUZBERGLlmUsage *ptr);

/**
 * Get the `model` field from a `LlmUsage`.
 * # Safety
 * Pointer must be a valid handle returned by this library.
 */
char *kreuzberg_llm_usage_model(const KREUZBERGLlmUsage *ptr);

/**
 * Get the `source` field from a `LlmUsage`.
 * # Safety
 * Pointer must be a valid handle returned by this library.
 */
char *kreuzberg_llm_usage_source(const KREUZBERGLlmUsage *ptr);

/**
 * Get the `input_tokens` field from a `LlmUsage`.
 * # Safety
 * Pointer must be a valid handle returned by this library.
 */
uint64_t kreuzberg_llm_usage_input_tokens(const KREUZBERGLlmUsage *ptr);

/**
 * Get the `output_tokens` field from a `LlmUsage`.
 * # Safety
 * Pointer must be a valid handle returned by this library.
 */
uint64_t kreuzberg_llm_usage_output_tokens(const KREUZBERGLlmUsage *ptr);

/**
 * Get the `total_tokens` field from a `LlmUsage`.
 * # Safety
 * Pointer must be a valid handle returned by this library.
 */
uint64_t kreuzberg_llm_usage_total_tokens(const KREUZBERGLlmUsage *ptr);

/**
 * Get the `estimated_cost` field from a `LlmUsage`.
 * # Safety
 * Pointer must be a valid handle returned by this library.
 */
double kreuzberg_llm_usage_estimated_cost(const KREUZBERGLlmUsage *ptr);

/**
 * Get the `finish_reason` field from a `LlmUsage`.
 * # Safety
 * Pointer must be a valid handle returned by this library.
 */
char *kreuzberg_llm_usage_finish_reason(const KREUZBERGLlmUsage *ptr);

/**
 * Create a `Chunk` from a JSON string. Returns null on failure.
 * # Safety
 * JSON string must be valid UTF-8 and null-terminated.
 * Returned handle must be freed with `kreuzberg_chunk_free`.
 */
KREUZBERGChunk *kreuzberg_chunk_from_json(const char *json);

/**
 * Serialize a `Chunk` to a JSON string. Returns null on failure.
 * # Safety
 * `ptr` must be a valid, non-null pointer returned by a `kreuzberg` function.
 * The returned string must be freed with `kreuzberg_free_string`.
 */
char *kreuzberg_chunk_to_json(const KREUZBERGChunk *ptr);

/**
 * Free a `Chunk` handle.
 * # Safety
 * Pointer must have been returned by this library, or be null.
 */
void kreuzberg_chunk_free(KREUZBERGChunk *ptr);

/**
 * Get the `content` field from a `Chunk`.
 * # Safety
 * Pointer must be a valid handle returned by this library.
 */
char *kreuzberg_chunk_content(const KREUZBERGChunk *ptr);

/**
 * Get the `chunk_type` field from a `Chunk`.
 * # Safety
 * Pointer must be a valid handle returned by this library.
 */
KREUZBERGChunkType *kreuzberg_chunk_chunk_type(const KREUZBERGChunk *ptr);

/**
 * Get the `embedding` field from a `Chunk`.
 * # Safety
 * Pointer must be a valid handle returned by this library.
 */
char *kreuzberg_chunk_embedding(const KREUZBERGChunk *ptr);

/**
 * Get the `metadata` field from a `Chunk`.
 * # Safety
 * Pointer must be a valid handle returned by this library.
 */
KREUZBERGChunkMetadata *kreuzberg_chunk_metadata(const KREUZBERGChunk *ptr);

/**
 * Create a `HeadingContext` from a JSON string. Returns null on failure.
 * # Safety
 * JSON string must be valid UTF-8 and null-terminated.
 * Returned handle must be freed with `kreuzberg_heading_context_free`.
 */
KREUZBERGHeadingContext *kreuzberg_heading_context_from_json(const char *json);

/**
 * Serialize a `HeadingContext` to a JSON string. Returns null on failure.
 * # Safety
 * `ptr` must be a valid, non-null pointer returned by a `kreuzberg` function.
 * The returned string must be freed with `kreuzberg_free_string`.
 */
char *kreuzberg_heading_context_to_json(const KREUZBERGHeadingContext *ptr);

/**
 * Free a `HeadingContext` handle.
 * # Safety
 * Pointer must have been returned by this library, or be null.
 */
void kreuzberg_heading_context_free(KREUZBERGHeadingContext *ptr);

/**
 * Get the `headings` field from a `HeadingContext`.
 * # Safety
 * Pointer must be a valid handle returned by this library.
 */
char *kreuzberg_heading_context_headings(const KREUZBERGHeadingContext *ptr);

/**
 * Create a `HeadingLevel` from a JSON string. Returns null on failure.
 * # Safety
 * JSON string must be valid UTF-8 and null-terminated.
 * Returned handle must be freed with `kreuzberg_heading_level_free`.
 */
KREUZBERGHeadingLevel *kreuzberg_heading_level_from_json(const char *json);

/**
 * Serialize a `HeadingLevel` to a JSON string. Returns null on failure.
 * # Safety
 * `ptr` must be a valid, non-null pointer returned by a `kreuzberg` function.
 * The returned string must be freed with `kreuzberg_free_string`.
 */
char *kreuzberg_heading_level_to_json(const KREUZBERGHeadingLevel *ptr);

/**
 * Free a `HeadingLevel` handle.
 * # Safety
 * Pointer must have been returned by this library, or be null.
 */
void kreuzberg_heading_level_free(KREUZBERGHeadingLevel *ptr);

/**
 * Get the `level` field from a `HeadingLevel`.
 * # Safety
 * Pointer must be a valid handle returned by this library.
 */
uint8_t kreuzberg_heading_level_level(const KREUZBERGHeadingLevel *ptr);

/**
 * Get the `text` field from a `HeadingLevel`.
 * # Safety
 * Pointer must be a valid handle returned by this library.
 */
char *kreuzberg_heading_level_text(const KREUZBERGHeadingLevel *ptr);

/**
 * Create a `ChunkMetadata` from a JSON string. Returns null on failure.
 * # Safety
 * JSON string must be valid UTF-8 and null-terminated.
 * Returned handle must be freed with `kreuzberg_chunk_metadata_free`.
 */
KREUZBERGChunkMetadata *kreuzberg_chunk_metadata_from_json(const char *json);

/**
 * Serialize a `ChunkMetadata` to a JSON string. Returns null on failure.
 * # Safety
 * `ptr` must be a valid, non-null pointer returned by a `kreuzberg` function.
 * The returned string must be freed with `kreuzberg_free_string`.
 */
char *kreuzberg_chunk_metadata_to_json(const KREUZBERGChunkMetadata *ptr);

/**
 * Free a `ChunkMetadata` handle.
 * # Safety
 * Pointer must have been returned by this library, or be null.
 */
void kreuzberg_chunk_metadata_free(KREUZBERGChunkMetadata *ptr);

/**
 * Get the `byte_start` field from a `ChunkMetadata`.
 * # Safety
 * Pointer must be a valid handle returned by this library.
 */
uintptr_t kreuzberg_chunk_metadata_byte_start(const KREUZBERGChunkMetadata *ptr);

/**
 * Get the `byte_end` field from a `ChunkMetadata`.
 * # Safety
 * Pointer must be a valid handle returned by this library.
 */
uintptr_t kreuzberg_chunk_metadata_byte_end(const KREUZBERGChunkMetadata *ptr);

/**
 * Get the `token_count` field from a `ChunkMetadata`.
 * # Safety
 * Pointer must be a valid handle returned by this library.
 */
uintptr_t kreuzberg_chunk_metadata_token_count(const KREUZBERGChunkMetadata *ptr);

/**
 * Get the `chunk_index` field from a `ChunkMetadata`.
 * # Safety
 * Pointer must be a valid handle returned by this library.
 */
uintptr_t kreuzberg_chunk_metadata_chunk_index(const KREUZBERGChunkMetadata *ptr);

/**
 * Get the `total_chunks` field from a `ChunkMetadata`.
 * # Safety
 * Pointer must be a valid handle returned by this library.
 */
uintptr_t kreuzberg_chunk_metadata_total_chunks(const KREUZBERGChunkMetadata *ptr);

/**
 * Get the `first_page` field from a `ChunkMetadata`.
 * # Safety
 * Pointer must be a valid handle returned by this library.
 */
uint32_t kreuzberg_chunk_metadata_first_page(const KREUZBERGChunkMetadata *ptr);

/**
 * Get the `last_page` field from a `ChunkMetadata`.
 * # Safety
 * Pointer must be a valid handle returned by this library.
 */
uint32_t kreuzberg_chunk_metadata_last_page(const KREUZBERGChunkMetadata *ptr);

/**
 * Get the `heading_context` field from a `ChunkMetadata`.
 * # Safety
 * Pointer must be a valid handle returned by this library.
 */
KREUZBERGHeadingContext *kreuzberg_chunk_metadata_heading_context(const KREUZBERGChunkMetadata *ptr);

/**
 * Get the `image_indices` field from a `ChunkMetadata`.
 * # Safety
 * Pointer must be a valid handle returned by this library.
 */
char *kreuzberg_chunk_metadata_image_indices(const KREUZBERGChunkMetadata *ptr);

/**
 * Create a `ExtractedImage` from a JSON string. Returns null on failure.
 * # Safety
 * JSON string must be valid UTF-8 and null-terminated.
 * Returned handle must be freed with `kreuzberg_extracted_image_free`.
 */
KREUZBERGExtractedImage *kreuzberg_extracted_image_from_json(const char *json);

/**
 * Serialize a `ExtractedImage` to a JSON string. Returns null on failure.
 * # Safety
 * `ptr` must be a valid, non-null pointer returned by a `kreuzberg` function.
 * The returned string must be freed with `kreuzberg_free_string`.
 */
char *kreuzberg_extracted_image_to_json(const KREUZBERGExtractedImage *ptr);

/**
 * Free a `ExtractedImage` handle.
 * # Safety
 * Pointer must have been returned by this library, or be null.
 */
void kreuzberg_extracted_image_free(KREUZBERGExtractedImage *ptr);

/**
 * Get the `data` field from a `ExtractedImage`.
 * # Safety
 * Pointer must be a valid handle returned by this library.
 */
uint8_t *kreuzberg_extracted_image_data(const KREUZBERGExtractedImage *ptr,
                                        uintptr_t *out_len);

/**
 * Get the `format` field from a `ExtractedImage`.
 * # Safety
 * Pointer must be a valid handle returned by this library.
 */
char *kreuzberg_extracted_image_format(const KREUZBERGExtractedImage *ptr);

/**
 * Get the `image_index` field from a `ExtractedImage`.
 * # Safety
 * Pointer must be a valid handle returned by this library.
 */
uint32_t kreuzberg_extracted_image_image_index(const KREUZBERGExtractedImage *ptr);

/**
 * Get the `page_number` field from a `ExtractedImage`.
 * # Safety
 * Pointer must be a valid handle returned by this library.
 */
uint32_t kreuzberg_extracted_image_page_number(const KREUZBERGExtractedImage *ptr);

/**
 * Get the `width` field from a `ExtractedImage`.
 * # Safety
 * Pointer must be a valid handle returned by this library.
 */
uint32_t kreuzberg_extracted_image_width(const KREUZBERGExtractedImage *ptr);

/**
 * Get the `height` field from a `ExtractedImage`.
 * # Safety
 * Pointer must be a valid handle returned by this library.
 */
uint32_t kreuzberg_extracted_image_height(const KREUZBERGExtractedImage *ptr);

/**
 * Get the `colorspace` field from a `ExtractedImage`.
 * # Safety
 * Pointer must be a valid handle returned by this library.
 */
char *kreuzberg_extracted_image_colorspace(const KREUZBERGExtractedImage *ptr);

/**
 * Get the `bits_per_component` field from a `ExtractedImage`.
 * # Safety
 * Pointer must be a valid handle returned by this library.
 */
uint32_t kreuzberg_extracted_image_bits_per_component(const KREUZBERGExtractedImage *ptr);

/**
 * Get the `is_mask` field from a `ExtractedImage`.
 * # Safety
 * Pointer must be a valid handle returned by this library.
 */
int32_t kreuzberg_extracted_image_is_mask(const KREUZBERGExtractedImage *ptr);

/**
 * Get the `description` field from a `ExtractedImage`.
 * # Safety
 * Pointer must be a valid handle returned by this library.
 */
char *kreuzberg_extracted_image_description(const KREUZBERGExtractedImage *ptr);

/**
 * Get the `ocr_result` field from a `ExtractedImage`.
 * # Safety
 * Pointer must be a valid handle returned by this library.
 */
KREUZBERGExtractionResult *kreuzberg_extracted_image_ocr_result(const KREUZBERGExtractedImage *ptr);

/**
 * Get the `bounding_box` field from a `ExtractedImage`.
 * # Safety
 * Pointer must be a valid handle returned by this library.
 */
KREUZBERGBoundingBox *kreuzberg_extracted_image_bounding_box(const KREUZBERGExtractedImage *ptr);

/**
 * Get the `source_path` field from a `ExtractedImage`.
 * # Safety
 * Pointer must be a valid handle returned by this library.
 */
char *kreuzberg_extracted_image_source_path(const KREUZBERGExtractedImage *ptr);

/**
 * Get the `image_kind` field from a `ExtractedImage`.
 * # Safety
 * Pointer must be a valid handle returned by this library.
 */
KREUZBERGImageKind *kreuzberg_extracted_image_image_kind(const KREUZBERGExtractedImage *ptr);

/**
 * Get the `kind_confidence` field from a `ExtractedImage`.
 * # Safety
 * Pointer must be a valid handle returned by this library.
 */
float kreuzberg_extracted_image_kind_confidence(const KREUZBERGExtractedImage *ptr);

/**
 * Get the `cluster_id` field from a `ExtractedImage`.
 * # Safety
 * Pointer must be a valid handle returned by this library.
 */
uint32_t kreuzberg_extracted_image_cluster_id(const KREUZBERGExtractedImage *ptr);

/**
 * Create a `BoundingBox` from a JSON string. Returns null on failure.
 * # Safety
 * JSON string must be valid UTF-8 and null-terminated.
 * Returned handle must be freed with `kreuzberg_bounding_box_free`.
 */
KREUZBERGBoundingBox *kreuzberg_bounding_box_from_json(const char *json);

/**
 * Serialize a `BoundingBox` to a JSON string. Returns null on failure.
 * # Safety
 * `ptr` must be a valid, non-null pointer returned by a `kreuzberg` function.
 * The returned string must be freed with `kreuzberg_free_string`.
 */
char *kreuzberg_bounding_box_to_json(const KREUZBERGBoundingBox *ptr);

/**
 * Free a `BoundingBox` handle.
 * # Safety
 * Pointer must have been returned by this library, or be null.
 */
void kreuzberg_bounding_box_free(KREUZBERGBoundingBox *ptr);

/**
 * Get the `x0` field from a `BoundingBox`.
 * # Safety
 * Pointer must be a valid handle returned by this library.
 */
double kreuzberg_bounding_box_x0(const KREUZBERGBoundingBox *ptr);

/**
 * Get the `y0` field from a `BoundingBox`.
 * # Safety
 * Pointer must be a valid handle returned by this library.
 */
double kreuzberg_bounding_box_y0(const KREUZBERGBoundingBox *ptr);

/**
 * Get the `x1` field from a `BoundingBox`.
 * # Safety
 * Pointer must be a valid handle returned by this library.
 */
double kreuzberg_bounding_box_x1(const KREUZBERGBoundingBox *ptr);

/**
 * Get the `y1` field from a `BoundingBox`.
 * # Safety
 * Pointer must be a valid handle returned by this library.
 */
double kreuzberg_bounding_box_y1(const KREUZBERGBoundingBox *ptr);

/**
 * Create a `ElementMetadata` from a JSON string. Returns null on failure.
 * # Safety
 * JSON string must be valid UTF-8 and null-terminated.
 * Returned handle must be freed with `kreuzberg_element_metadata_free`.
 */
KREUZBERGElementMetadata *kreuzberg_element_metadata_from_json(const char *json);

/**
 * Serialize a `ElementMetadata` to a JSON string. Returns null on failure.
 * # Safety
 * `ptr` must be a valid, non-null pointer returned by a `kreuzberg` function.
 * The returned string must be freed with `kreuzberg_free_string`.
 */
char *kreuzberg_element_metadata_to_json(const KREUZBERGElementMetadata *ptr);

/**
 * Free a `ElementMetadata` handle.
 * # Safety
 * Pointer must have been returned by this library, or be null.
 */
void kreuzberg_element_metadata_free(KREUZBERGElementMetadata *ptr);

/**
 * Get the `page_number` field from a `ElementMetadata`.
 * # Safety
 * Pointer must be a valid handle returned by this library.
 */
uint32_t kreuzberg_element_metadata_page_number(const KREUZBERGElementMetadata *ptr);

/**
 * Get the `filename` field from a `ElementMetadata`.
 * # Safety
 * Pointer must be a valid handle returned by this library.
 */
char *kreuzberg_element_metadata_filename(const KREUZBERGElementMetadata *ptr);

/**
 * Get the `coordinates` field from a `ElementMetadata`.
 * # Safety
 * Pointer must be a valid handle returned by this library.
 */
KREUZBERGBoundingBox *kreuzberg_element_metadata_coordinates(const KREUZBERGElementMetadata *ptr);

/**
 * Get the `element_index` field from a `ElementMetadata`.
 * # Safety
 * Pointer must be a valid handle returned by this library.
 */
uintptr_t kreuzberg_element_metadata_element_index(const KREUZBERGElementMetadata *ptr);

/**
 * Get the `additional` field from a `ElementMetadata`.
 * # Safety
 * Pointer must be a valid handle returned by this library.
 */
char *kreuzberg_element_metadata_additional(const KREUZBERGElementMetadata *ptr);

/**
 * Create a `Element` from a JSON string. Returns null on failure.
 * # Safety
 * JSON string must be valid UTF-8 and null-terminated.
 * Returned handle must be freed with `kreuzberg_element_free`.
 */
KREUZBERGElement *kreuzberg_element_from_json(const char *json);

/**
 * Serialize a `Element` to a JSON string. Returns null on failure.
 * # Safety
 * `ptr` must be a valid, non-null pointer returned by a `kreuzberg` function.
 * The returned string must be freed with `kreuzberg_free_string`.
 */
char *kreuzberg_element_to_json(const KREUZBERGElement *ptr);

/**
 * Free a `Element` handle.
 * # Safety
 * Pointer must have been returned by this library, or be null.
 */
void kreuzberg_element_free(KREUZBERGElement *ptr);

/**
 * Get the `element_type` field from a `Element`.
 * # Safety
 * Pointer must be a valid handle returned by this library.
 */
KREUZBERGElementType *kreuzberg_element_element_type(const KREUZBERGElement *ptr);

/**
 * Get the `text` field from a `Element`.
 * # Safety
 * Pointer must be a valid handle returned by this library.
 */
char *kreuzberg_element_text(const KREUZBERGElement *ptr);

/**
 * Get the `metadata` field from a `Element`.
 * # Safety
 * Pointer must be a valid handle returned by this library.
 */
KREUZBERGElementMetadata *kreuzberg_element_metadata(const KREUZBERGElement *ptr);

/**
 * Create a `ExcelWorkbook` from a JSON string. Returns null on failure.
 * # Safety
 * JSON string must be valid UTF-8 and null-terminated.
 * Returned handle must be freed with `kreuzberg_excel_workbook_free`.
 */
KREUZBERGExcelWorkbook *kreuzberg_excel_workbook_from_json(const char *json);

/**
 * Serialize a `ExcelWorkbook` to a JSON string. Returns null on failure.
 * # Safety
 * `ptr` must be a valid, non-null pointer returned by a `kreuzberg` function.
 * The returned string must be freed with `kreuzberg_free_string`.
 */
char *kreuzberg_excel_workbook_to_json(const KREUZBERGExcelWorkbook *ptr);

/**
 * Free a `ExcelWorkbook` handle.
 * # Safety
 * Pointer must have been returned by this library, or be null.
 */
void kreuzberg_excel_workbook_free(KREUZBERGExcelWorkbook *ptr);

/**
 * Get the `sheets` field from a `ExcelWorkbook`.
 * # Safety
 * Pointer must be a valid handle returned by this library.
 */
char *kreuzberg_excel_workbook_sheets(const KREUZBERGExcelWorkbook *ptr);

/**
 * Get the `metadata` field from a `ExcelWorkbook`.
 * # Safety
 * Pointer must be a valid handle returned by this library.
 */
char *kreuzberg_excel_workbook_metadata(const KREUZBERGExcelWorkbook *ptr);

/**
 * Get the `revisions` field from a `ExcelWorkbook`.
 * # Safety
 * Pointer must be a valid handle returned by this library.
 */
char *kreuzberg_excel_workbook_revisions(const KREUZBERGExcelWorkbook *ptr);

/**
 * Create a `ExcelSheet` from a JSON string. Returns null on failure.
 * # Safety
 * JSON string must be valid UTF-8 and null-terminated.
 * Returned handle must be freed with `kreuzberg_excel_sheet_free`.
 */
KREUZBERGExcelSheet *kreuzberg_excel_sheet_from_json(const char *json);

/**
 * Serialize a `ExcelSheet` to a JSON string. Returns null on failure.
 * # Safety
 * `ptr` must be a valid, non-null pointer returned by a `kreuzberg` function.
 * The returned string must be freed with `kreuzberg_free_string`.
 */
char *kreuzberg_excel_sheet_to_json(const KREUZBERGExcelSheet *ptr);

/**
 * Free a `ExcelSheet` handle.
 * # Safety
 * Pointer must have been returned by this library, or be null.
 */
void kreuzberg_excel_sheet_free(KREUZBERGExcelSheet *ptr);

/**
 * Get the `name` field from a `ExcelSheet`.
 * # Safety
 * Pointer must be a valid handle returned by this library.
 */
char *kreuzberg_excel_sheet_name(const KREUZBERGExcelSheet *ptr);

/**
 * Get the `markdown` field from a `ExcelSheet`.
 * # Safety
 * Pointer must be a valid handle returned by this library.
 */
char *kreuzberg_excel_sheet_markdown(const KREUZBERGExcelSheet *ptr);

/**
 * Get the `row_count` field from a `ExcelSheet`.
 * # Safety
 * Pointer must be a valid handle returned by this library.
 */
uintptr_t kreuzberg_excel_sheet_row_count(const KREUZBERGExcelSheet *ptr);

/**
 * Get the `col_count` field from a `ExcelSheet`.
 * # Safety
 * Pointer must be a valid handle returned by this library.
 */
uintptr_t kreuzberg_excel_sheet_col_count(const KREUZBERGExcelSheet *ptr);

/**
 * Get the `cell_count` field from a `ExcelSheet`.
 * # Safety
 * Pointer must be a valid handle returned by this library.
 */
uintptr_t kreuzberg_excel_sheet_cell_count(const KREUZBERGExcelSheet *ptr);

/**
 * Get the `table_cells` field from a `ExcelSheet`.
 * # Safety
 * Pointer must be a valid handle returned by this library.
 */
char *kreuzberg_excel_sheet_table_cells(const KREUZBERGExcelSheet *ptr);

/**
 * Create a `XmlExtractionResult` from a JSON string. Returns null on failure.
 * # Safety
 * JSON string must be valid UTF-8 and null-terminated.
 * Returned handle must be freed with `kreuzberg_xml_extraction_result_free`.
 */
KREUZBERGXmlExtractionResult *kreuzberg_xml_extraction_result_from_json(const char *json);

/**
 * Serialize a `XmlExtractionResult` to a JSON string. Returns null on failure.
 * # Safety
 * `ptr` must be a valid, non-null pointer returned by a `kreuzberg` function.
 * The returned string must be freed with `kreuzberg_free_string`.
 */
char *kreuzberg_xml_extraction_result_to_json(const KREUZBERGXmlExtractionResult *ptr);

/**
 * Free a `XmlExtractionResult` handle.
 * # Safety
 * Pointer must have been returned by this library, or be null.
 */
void kreuzberg_xml_extraction_result_free(KREUZBERGXmlExtractionResult *ptr);

/**
 * Get the `content` field from a `XmlExtractionResult`.
 * # Safety
 * Pointer must be a valid handle returned by this library.
 */
char *kreuzberg_xml_extraction_result_content(const KREUZBERGXmlExtractionResult *ptr);

/**
 * Get the `element_count` field from a `XmlExtractionResult`.
 * # Safety
 * Pointer must be a valid handle returned by this library.
 */
uintptr_t kreuzberg_xml_extraction_result_element_count(const KREUZBERGXmlExtractionResult *ptr);

/**
 * Get the `unique_elements` field from a `XmlExtractionResult`.
 * # Safety
 * Pointer must be a valid handle returned by this library.
 */
char *kreuzberg_xml_extraction_result_unique_elements(const KREUZBERGXmlExtractionResult *ptr);

/**
 * Create a `TextExtractionResult` from a JSON string. Returns null on failure.
 * # Safety
 * JSON string must be valid UTF-8 and null-terminated.
 * Returned handle must be freed with `kreuzberg_text_extraction_result_free`.
 */
KREUZBERGTextExtractionResult *kreuzberg_text_extraction_result_from_json(const char *json);

/**
 * Serialize a `TextExtractionResult` to a JSON string. Returns null on failure.
 * # Safety
 * `ptr` must be a valid, non-null pointer returned by a `kreuzberg` function.
 * The returned string must be freed with `kreuzberg_free_string`.
 */
char *kreuzberg_text_extraction_result_to_json(const KREUZBERGTextExtractionResult *ptr);

/**
 * Free a `TextExtractionResult` handle.
 * # Safety
 * Pointer must have been returned by this library, or be null.
 */
void kreuzberg_text_extraction_result_free(KREUZBERGTextExtractionResult *ptr);

/**
 * Get the `content` field from a `TextExtractionResult`.
 * # Safety
 * Pointer must be a valid handle returned by this library.
 */
char *kreuzberg_text_extraction_result_content(const KREUZBERGTextExtractionResult *ptr);

/**
 * Get the `line_count` field from a `TextExtractionResult`.
 * # Safety
 * Pointer must be a valid handle returned by this library.
 */
uintptr_t kreuzberg_text_extraction_result_line_count(const KREUZBERGTextExtractionResult *ptr);

/**
 * Get the `word_count` field from a `TextExtractionResult`.
 * # Safety
 * Pointer must be a valid handle returned by this library.
 */
uintptr_t kreuzberg_text_extraction_result_word_count(const KREUZBERGTextExtractionResult *ptr);

/**
 * Get the `character_count` field from a `TextExtractionResult`.
 * # Safety
 * Pointer must be a valid handle returned by this library.
 */
uintptr_t kreuzberg_text_extraction_result_character_count(const KREUZBERGTextExtractionResult *ptr);

/**
 * Get the `headers` field from a `TextExtractionResult`.
 * # Safety
 * Pointer must be a valid handle returned by this library.
 */
char *kreuzberg_text_extraction_result_headers(const KREUZBERGTextExtractionResult *ptr);

/**
 * Create a `PptxExtractionResult` from a JSON string. Returns null on failure.
 * # Safety
 * JSON string must be valid UTF-8 and null-terminated.
 * Returned handle must be freed with `kreuzberg_pptx_extraction_result_free`.
 */
KREUZBERGPptxExtractionResult *kreuzberg_pptx_extraction_result_from_json(const char *json);

/**
 * Serialize a `PptxExtractionResult` to a JSON string. Returns null on failure.
 * # Safety
 * `ptr` must be a valid, non-null pointer returned by a `kreuzberg` function.
 * The returned string must be freed with `kreuzberg_free_string`.
 */
char *kreuzberg_pptx_extraction_result_to_json(const KREUZBERGPptxExtractionResult *ptr);

/**
 * Free a `PptxExtractionResult` handle.
 * # Safety
 * Pointer must have been returned by this library, or be null.
 */
void kreuzberg_pptx_extraction_result_free(KREUZBERGPptxExtractionResult *ptr);

/**
 * Get the `content` field from a `PptxExtractionResult`.
 * # Safety
 * Pointer must be a valid handle returned by this library.
 */
char *kreuzberg_pptx_extraction_result_content(const KREUZBERGPptxExtractionResult *ptr);

/**
 * Get the `metadata` field from a `PptxExtractionResult`.
 * # Safety
 * Pointer must be a valid handle returned by this library.
 */
KREUZBERGPptxMetadata *kreuzberg_pptx_extraction_result_metadata(const KREUZBERGPptxExtractionResult *ptr);

/**
 * Get the `slide_count` field from a `PptxExtractionResult`.
 * # Safety
 * Pointer must be a valid handle returned by this library.
 */
uintptr_t kreuzberg_pptx_extraction_result_slide_count(const KREUZBERGPptxExtractionResult *ptr);

/**
 * Get the `image_count` field from a `PptxExtractionResult`.
 * # Safety
 * Pointer must be a valid handle returned by this library.
 */
uintptr_t kreuzberg_pptx_extraction_result_image_count(const KREUZBERGPptxExtractionResult *ptr);

/**
 * Get the `table_count` field from a `PptxExtractionResult`.
 * # Safety
 * Pointer must be a valid handle returned by this library.
 */
uintptr_t kreuzberg_pptx_extraction_result_table_count(const KREUZBERGPptxExtractionResult *ptr);

/**
 * Get the `images` field from a `PptxExtractionResult`.
 * # Safety
 * Pointer must be a valid handle returned by this library.
 */
char *kreuzberg_pptx_extraction_result_images(const KREUZBERGPptxExtractionResult *ptr);

/**
 * Get the `page_structure` field from a `PptxExtractionResult`.
 * # Safety
 * Pointer must be a valid handle returned by this library.
 */
KREUZBERGPageStructure *kreuzberg_pptx_extraction_result_page_structure(const KREUZBERGPptxExtractionResult *ptr);

/**
 * Get the `page_contents` field from a `PptxExtractionResult`.
 * # Safety
 * Pointer must be a valid handle returned by this library.
 */
char *kreuzberg_pptx_extraction_result_page_contents(const KREUZBERGPptxExtractionResult *ptr);

/**
 * Get the `document` field from a `PptxExtractionResult`.
 * # Safety
 * Pointer must be a valid handle returned by this library.
 */
KREUZBERGDocumentStructure *kreuzberg_pptx_extraction_result_document(const KREUZBERGPptxExtractionResult *ptr);

/**
 * Get the `office_metadata` field from a `PptxExtractionResult`.
 * # Safety
 * Pointer must be a valid handle returned by this library.
 */
char *kreuzberg_pptx_extraction_result_office_metadata(const KREUZBERGPptxExtractionResult *ptr);

/**
 * Get the `revisions` field from a `PptxExtractionResult`.
 * # Safety
 * Pointer must be a valid handle returned by this library.
 */
char *kreuzberg_pptx_extraction_result_revisions(const KREUZBERGPptxExtractionResult *ptr);

/**
 * Create a `EmailExtractionResult` from a JSON string. Returns null on failure.
 * # Safety
 * JSON string must be valid UTF-8 and null-terminated.
 * Returned handle must be freed with `kreuzberg_email_extraction_result_free`.
 */
KREUZBERGEmailExtractionResult *kreuzberg_email_extraction_result_from_json(const char *json);

/**
 * Serialize a `EmailExtractionResult` to a JSON string. Returns null on failure.
 * # Safety
 * `ptr` must be a valid, non-null pointer returned by a `kreuzberg` function.
 * The returned string must be freed with `kreuzberg_free_string`.
 */
char *kreuzberg_email_extraction_result_to_json(const KREUZBERGEmailExtractionResult *ptr);

/**
 * Free a `EmailExtractionResult` handle.
 * # Safety
 * Pointer must have been returned by this library, or be null.
 */
void kreuzberg_email_extraction_result_free(KREUZBERGEmailExtractionResult *ptr);

/**
 * Get the `subject` field from a `EmailExtractionResult`.
 * # Safety
 * Pointer must be a valid handle returned by this library.
 */
char *kreuzberg_email_extraction_result_subject(const KREUZBERGEmailExtractionResult *ptr);

/**
 * Get the `from_email` field from a `EmailExtractionResult`.
 * # Safety
 * Pointer must be a valid handle returned by this library.
 */
char *kreuzberg_email_extraction_result_from_email(const KREUZBERGEmailExtractionResult *ptr);

/**
 * Get the `to_emails` field from a `EmailExtractionResult`.
 * # Safety
 * Pointer must be a valid handle returned by this library.
 */
char *kreuzberg_email_extraction_result_to_emails(const KREUZBERGEmailExtractionResult *ptr);

/**
 * Get the `cc_emails` field from a `EmailExtractionResult`.
 * # Safety
 * Pointer must be a valid handle returned by this library.
 */
char *kreuzberg_email_extraction_result_cc_emails(const KREUZBERGEmailExtractionResult *ptr);

/**
 * Get the `bcc_emails` field from a `EmailExtractionResult`.
 * # Safety
 * Pointer must be a valid handle returned by this library.
 */
char *kreuzberg_email_extraction_result_bcc_emails(const KREUZBERGEmailExtractionResult *ptr);

/**
 * Get the `date` field from a `EmailExtractionResult`.
 * # Safety
 * Pointer must be a valid handle returned by this library.
 */
char *kreuzberg_email_extraction_result_date(const KREUZBERGEmailExtractionResult *ptr);

/**
 * Get the `message_id` field from a `EmailExtractionResult`.
 * # Safety
 * Pointer must be a valid handle returned by this library.
 */
char *kreuzberg_email_extraction_result_message_id(const KREUZBERGEmailExtractionResult *ptr);

/**
 * Get the `plain_text` field from a `EmailExtractionResult`.
 * # Safety
 * Pointer must be a valid handle returned by this library.
 */
char *kreuzberg_email_extraction_result_plain_text(const KREUZBERGEmailExtractionResult *ptr);

/**
 * Get the `html_content` field from a `EmailExtractionResult`.
 * # Safety
 * Pointer must be a valid handle returned by this library.
 */
char *kreuzberg_email_extraction_result_html_content(const KREUZBERGEmailExtractionResult *ptr);

/**
 * Get the `content` field from a `EmailExtractionResult`.
 * # Safety
 * Pointer must be a valid handle returned by this library.
 */
char *kreuzberg_email_extraction_result_content(const KREUZBERGEmailExtractionResult *ptr);

/**
 * Get the `attachments` field from a `EmailExtractionResult`.
 * # Safety
 * Pointer must be a valid handle returned by this library.
 */
char *kreuzberg_email_extraction_result_attachments(const KREUZBERGEmailExtractionResult *ptr);

/**
 * Get the `metadata` field from a `EmailExtractionResult`.
 * # Safety
 * Pointer must be a valid handle returned by this library.
 */
char *kreuzberg_email_extraction_result_metadata(const KREUZBERGEmailExtractionResult *ptr);

/**
 * Create a `EmailAttachment` from a JSON string. Returns null on failure.
 * # Safety
 * JSON string must be valid UTF-8 and null-terminated.
 * Returned handle must be freed with `kreuzberg_email_attachment_free`.
 */
KREUZBERGEmailAttachment *kreuzberg_email_attachment_from_json(const char *json);

/**
 * Serialize a `EmailAttachment` to a JSON string. Returns null on failure.
 * # Safety
 * `ptr` must be a valid, non-null pointer returned by a `kreuzberg` function.
 * The returned string must be freed with `kreuzberg_free_string`.
 */
char *kreuzberg_email_attachment_to_json(const KREUZBERGEmailAttachment *ptr);

/**
 * Free a `EmailAttachment` handle.
 * # Safety
 * Pointer must have been returned by this library, or be null.
 */
void kreuzberg_email_attachment_free(KREUZBERGEmailAttachment *ptr);

/**
 * Get the `name` field from a `EmailAttachment`.
 * # Safety
 * Pointer must be a valid handle returned by this library.
 */
char *kreuzberg_email_attachment_name(const KREUZBERGEmailAttachment *ptr);

/**
 * Get the `filename` field from a `EmailAttachment`.
 * # Safety
 * Pointer must be a valid handle returned by this library.
 */
char *kreuzberg_email_attachment_filename(const KREUZBERGEmailAttachment *ptr);

/**
 * Get the `mime_type` field from a `EmailAttachment`.
 * # Safety
 * Pointer must be a valid handle returned by this library.
 */
char *kreuzberg_email_attachment_mime_type(const KREUZBERGEmailAttachment *ptr);

/**
 * Get the `size` field from a `EmailAttachment`.
 * # Safety
 * Pointer must be a valid handle returned by this library.
 */
uintptr_t kreuzberg_email_attachment_size(const KREUZBERGEmailAttachment *ptr);

/**
 * Get the `is_image` field from a `EmailAttachment`.
 * # Safety
 * Pointer must be a valid handle returned by this library.
 */
int32_t kreuzberg_email_attachment_is_image(const KREUZBERGEmailAttachment *ptr);

/**
 * Get the `data` field from a `EmailAttachment`.
 * # Safety
 * Pointer must be a valid handle returned by this library.
 */
uint8_t *kreuzberg_email_attachment_data(const KREUZBERGEmailAttachment *ptr,
                                         uintptr_t *out_len);

/**
 * Create a `OcrExtractionResult` from a JSON string. Returns null on failure.
 * # Safety
 * JSON string must be valid UTF-8 and null-terminated.
 * Returned handle must be freed with `kreuzberg_ocr_extraction_result_free`.
 */
KREUZBERGOcrExtractionResult *kreuzberg_ocr_extraction_result_from_json(const char *json);

/**
 * Serialize a `OcrExtractionResult` to a JSON string. Returns null on failure.
 * # Safety
 * `ptr` must be a valid, non-null pointer returned by a `kreuzberg` function.
 * The returned string must be freed with `kreuzberg_free_string`.
 */
char *kreuzberg_ocr_extraction_result_to_json(const KREUZBERGOcrExtractionResult *ptr);

/**
 * Free a `OcrExtractionResult` handle.
 * # Safety
 * Pointer must have been returned by this library, or be null.
 */
void kreuzberg_ocr_extraction_result_free(KREUZBERGOcrExtractionResult *ptr);

/**
 * Get the `content` field from a `OcrExtractionResult`.
 * # Safety
 * Pointer must be a valid handle returned by this library.
 */
char *kreuzberg_ocr_extraction_result_content(const KREUZBERGOcrExtractionResult *ptr);

/**
 * Get the `mime_type` field from a `OcrExtractionResult`.
 * # Safety
 * Pointer must be a valid handle returned by this library.
 */
char *kreuzberg_ocr_extraction_result_mime_type(const KREUZBERGOcrExtractionResult *ptr);

/**
 * Get the `metadata` field from a `OcrExtractionResult`.
 * # Safety
 * Pointer must be a valid handle returned by this library.
 */
char *kreuzberg_ocr_extraction_result_metadata(const KREUZBERGOcrExtractionResult *ptr);

/**
 * Get the `tables` field from a `OcrExtractionResult`.
 * # Safety
 * Pointer must be a valid handle returned by this library.
 */
char *kreuzberg_ocr_extraction_result_tables(const KREUZBERGOcrExtractionResult *ptr);

/**
 * Get the `ocr_elements` field from a `OcrExtractionResult`.
 * # Safety
 * Pointer must be a valid handle returned by this library.
 */
char *kreuzberg_ocr_extraction_result_ocr_elements(const KREUZBERGOcrExtractionResult *ptr);

/**
 * Create a `OcrTable` from a JSON string. Returns null on failure.
 * # Safety
 * JSON string must be valid UTF-8 and null-terminated.
 * Returned handle must be freed with `kreuzberg_ocr_table_free`.
 */
KREUZBERGOcrTable *kreuzberg_ocr_table_from_json(const char *json);

/**
 * Serialize a `OcrTable` to a JSON string. Returns null on failure.
 * # Safety
 * `ptr` must be a valid, non-null pointer returned by a `kreuzberg` function.
 * The returned string must be freed with `kreuzberg_free_string`.
 */
char *kreuzberg_ocr_table_to_json(const KREUZBERGOcrTable *ptr);

/**
 * Free a `OcrTable` handle.
 * # Safety
 * Pointer must have been returned by this library, or be null.
 */
void kreuzberg_ocr_table_free(KREUZBERGOcrTable *ptr);

/**
 * Get the `cells` field from a `OcrTable`.
 * # Safety
 * Pointer must be a valid handle returned by this library.
 */
char *kreuzberg_ocr_table_cells(const KREUZBERGOcrTable *ptr);

/**
 * Get the `markdown` field from a `OcrTable`.
 * # Safety
 * Pointer must be a valid handle returned by this library.
 */
char *kreuzberg_ocr_table_markdown(const KREUZBERGOcrTable *ptr);

/**
 * Get the `page_number` field from a `OcrTable`.
 * # Safety
 * Pointer must be a valid handle returned by this library.
 */
uint32_t kreuzberg_ocr_table_page_number(const KREUZBERGOcrTable *ptr);

/**
 * Get the `bounding_box` field from a `OcrTable`.
 * # Safety
 * Pointer must be a valid handle returned by this library.
 */
KREUZBERGOcrTableBoundingBox *kreuzberg_ocr_table_bounding_box(const KREUZBERGOcrTable *ptr);

/**
 * Create a `OcrTableBoundingBox` from a JSON string. Returns null on failure.
 * # Safety
 * JSON string must be valid UTF-8 and null-terminated.
 * Returned handle must be freed with `kreuzberg_ocr_table_bounding_box_free`.
 */
KREUZBERGOcrTableBoundingBox *kreuzberg_ocr_table_bounding_box_from_json(const char *json);

/**
 * Serialize a `OcrTableBoundingBox` to a JSON string. Returns null on failure.
 * # Safety
 * `ptr` must be a valid, non-null pointer returned by a `kreuzberg` function.
 * The returned string must be freed with `kreuzberg_free_string`.
 */
char *kreuzberg_ocr_table_bounding_box_to_json(const KREUZBERGOcrTableBoundingBox *ptr);

/**
 * Free a `OcrTableBoundingBox` handle.
 * # Safety
 * Pointer must have been returned by this library, or be null.
 */
void kreuzberg_ocr_table_bounding_box_free(KREUZBERGOcrTableBoundingBox *ptr);

/**
 * Get the `left` field from a `OcrTableBoundingBox`.
 * # Safety
 * Pointer must be a valid handle returned by this library.
 */
uint32_t kreuzberg_ocr_table_bounding_box_left(const KREUZBERGOcrTableBoundingBox *ptr);

/**
 * Get the `top` field from a `OcrTableBoundingBox`.
 * # Safety
 * Pointer must be a valid handle returned by this library.
 */
uint32_t kreuzberg_ocr_table_bounding_box_top(const KREUZBERGOcrTableBoundingBox *ptr);

/**
 * Get the `right` field from a `OcrTableBoundingBox`.
 * # Safety
 * Pointer must be a valid handle returned by this library.
 */
uint32_t kreuzberg_ocr_table_bounding_box_right(const KREUZBERGOcrTableBoundingBox *ptr);

/**
 * Get the `bottom` field from a `OcrTableBoundingBox`.
 * # Safety
 * Pointer must be a valid handle returned by this library.
 */
uint32_t kreuzberg_ocr_table_bounding_box_bottom(const KREUZBERGOcrTableBoundingBox *ptr);

/**
 * Create a `ImagePreprocessingConfig` from a JSON string. Returns null on failure.
 * # Safety
 * JSON string must be valid UTF-8 and null-terminated.
 * Returned handle must be freed with `kreuzberg_image_preprocessing_config_free`.
 */
KREUZBERGImagePreprocessingConfig *kreuzberg_image_preprocessing_config_from_json(const char *json);

/**
 * Serialize a `ImagePreprocessingConfig` to a JSON string. Returns null on failure.
 * # Safety
 * `ptr` must be a valid, non-null pointer returned by a `kreuzberg` function.
 * The returned string must be freed with `kreuzberg_free_string`.
 */
char *kreuzberg_image_preprocessing_config_to_json(const KREUZBERGImagePreprocessingConfig *ptr);

/**
 * Free a `ImagePreprocessingConfig` handle.
 * # Safety
 * Pointer must have been returned by this library, or be null.
 */
void kreuzberg_image_preprocessing_config_free(KREUZBERGImagePreprocessingConfig *ptr);

/**
 * Get the `target_dpi` field from a `ImagePreprocessingConfig`.
 * # Safety
 * Pointer must be a valid handle returned by this library.
 */
int32_t kreuzberg_image_preprocessing_config_target_dpi(const KREUZBERGImagePreprocessingConfig *ptr);

/**
 * Get the `auto_rotate` field from a `ImagePreprocessingConfig`.
 * # Safety
 * Pointer must be a valid handle returned by this library.
 */
int32_t kreuzberg_image_preprocessing_config_auto_rotate(const KREUZBERGImagePreprocessingConfig *ptr);

/**
 * Get the `deskew` field from a `ImagePreprocessingConfig`.
 * # Safety
 * Pointer must be a valid handle returned by this library.
 */
int32_t kreuzberg_image_preprocessing_config_deskew(const KREUZBERGImagePreprocessingConfig *ptr);

/**
 * Get the `denoise` field from a `ImagePreprocessingConfig`.
 * # Safety
 * Pointer must be a valid handle returned by this library.
 */
int32_t kreuzberg_image_preprocessing_config_denoise(const KREUZBERGImagePreprocessingConfig *ptr);

/**
 * Get the `contrast_enhance` field from a `ImagePreprocessingConfig`.
 * # Safety
 * Pointer must be a valid handle returned by this library.
 */
int32_t kreuzberg_image_preprocessing_config_contrast_enhance(const KREUZBERGImagePreprocessingConfig *ptr);

/**
 * Get the `binarization_method` field from a `ImagePreprocessingConfig`.
 * # Safety
 * Pointer must be a valid handle returned by this library.
 */
char *kreuzberg_image_preprocessing_config_binarization_method(const KREUZBERGImagePreprocessingConfig *ptr);

/**
 * Get the `invert_colors` field from a `ImagePreprocessingConfig`.
 * # Safety
 * Pointer must be a valid handle returned by this library.
 */
int32_t kreuzberg_image_preprocessing_config_invert_colors(const KREUZBERGImagePreprocessingConfig *ptr);

/**
 * \note SAFETY: Caller must ensure all pointer arguments are valid or null. Returned pointers must be
 * freed with the appropriate free function.
 */
KREUZBERGImagePreprocessingConfig *kreuzberg_image_preprocessing_config_default(void);

/**
 * Create a `TesseractConfig` from a JSON string. Returns null on failure.
 * # Safety
 * JSON string must be valid UTF-8 and null-terminated.
 * Returned handle must be freed with `kreuzberg_tesseract_config_free`.
 */
KREUZBERGTesseractConfig *kreuzberg_tesseract_config_from_json(const char *json);

/**
 * Serialize a `TesseractConfig` to a JSON string. Returns null on failure.
 * # Safety
 * `ptr` must be a valid, non-null pointer returned by a `kreuzberg` function.
 * The returned string must be freed with `kreuzberg_free_string`.
 */
char *kreuzberg_tesseract_config_to_json(const KREUZBERGTesseractConfig *ptr);

/**
 * Free a `TesseractConfig` handle.
 * # Safety
 * Pointer must have been returned by this library, or be null.
 */
void kreuzberg_tesseract_config_free(KREUZBERGTesseractConfig *ptr);

/**
 * Get the `language` field from a `TesseractConfig`.
 * # Safety
 * Pointer must be a valid handle returned by this library.
 */
char *kreuzberg_tesseract_config_language(const KREUZBERGTesseractConfig *ptr);

/**
 * Get the `psm` field from a `TesseractConfig`.
 * # Safety
 * Pointer must be a valid handle returned by this library.
 */
int32_t kreuzberg_tesseract_config_psm(const KREUZBERGTesseractConfig *ptr);

/**
 * Get the `output_format` field from a `TesseractConfig`.
 * # Safety
 * Pointer must be a valid handle returned by this library.
 */
char *kreuzberg_tesseract_config_output_format(const KREUZBERGTesseractConfig *ptr);

/**
 * Get the `oem` field from a `TesseractConfig`.
 * # Safety
 * Pointer must be a valid handle returned by this library.
 */
int32_t kreuzberg_tesseract_config_oem(const KREUZBERGTesseractConfig *ptr);

/**
 * Get the `min_confidence` field from a `TesseractConfig`.
 * # Safety
 * Pointer must be a valid handle returned by this library.
 */
double kreuzberg_tesseract_config_min_confidence(const KREUZBERGTesseractConfig *ptr);

/**
 * Get the `preprocessing` field from a `TesseractConfig`.
 * # Safety
 * Pointer must be a valid handle returned by this library.
 */
KREUZBERGImagePreprocessingConfig *kreuzberg_tesseract_config_preprocessing(const KREUZBERGTesseractConfig *ptr);

/**
 * Get the `enable_table_detection` field from a `TesseractConfig`.
 * # Safety
 * Pointer must be a valid handle returned by this library.
 */
int32_t kreuzberg_tesseract_config_enable_table_detection(const KREUZBERGTesseractConfig *ptr);

/**
 * Get the `table_min_confidence` field from a `TesseractConfig`.
 * # Safety
 * Pointer must be a valid handle returned by this library.
 */
double kreuzberg_tesseract_config_table_min_confidence(const KREUZBERGTesseractConfig *ptr);

/**
 * Get the `table_column_threshold` field from a `TesseractConfig`.
 * # Safety
 * Pointer must be a valid handle returned by this library.
 */
int32_t kreuzberg_tesseract_config_table_column_threshold(const KREUZBERGTesseractConfig *ptr);

/**
 * Get the `table_row_threshold_ratio` field from a `TesseractConfig`.
 * # Safety
 * Pointer must be a valid handle returned by this library.
 */
double kreuzberg_tesseract_config_table_row_threshold_ratio(const KREUZBERGTesseractConfig *ptr);

/**
 * Get the `use_cache` field from a `TesseractConfig`.
 * # Safety
 * Pointer must be a valid handle returned by this library.
 */
int32_t kreuzberg_tesseract_config_use_cache(const KREUZBERGTesseractConfig *ptr);

/**
 * Get the `classify_use_pre_adapted_templates` field from a `TesseractConfig`.
 * # Safety
 * Pointer must be a valid handle returned by this library.
 */
int32_t kreuzberg_tesseract_config_classify_use_pre_adapted_templates(const KREUZBERGTesseractConfig *ptr);

/**
 * Get the `language_model_ngram_on` field from a `TesseractConfig`.
 * # Safety
 * Pointer must be a valid handle returned by this library.
 */
int32_t kreuzberg_tesseract_config_language_model_ngram_on(const KREUZBERGTesseractConfig *ptr);

/**
 * Get the `tessedit_dont_blkrej_good_wds` field from a `TesseractConfig`.
 * # Safety
 * Pointer must be a valid handle returned by this library.
 */
int32_t kreuzberg_tesseract_config_tessedit_dont_blkrej_good_wds(const KREUZBERGTesseractConfig *ptr);

/**
 * Get the `tessedit_dont_rowrej_good_wds` field from a `TesseractConfig`.
 * # Safety
 * Pointer must be a valid handle returned by this library.
 */
int32_t kreuzberg_tesseract_config_tessedit_dont_rowrej_good_wds(const KREUZBERGTesseractConfig *ptr);

/**
 * Get the `tessedit_enable_dict_correction` field from a `TesseractConfig`.
 * # Safety
 * Pointer must be a valid handle returned by this library.
 */
int32_t kreuzberg_tesseract_config_tessedit_enable_dict_correction(const KREUZBERGTesseractConfig *ptr);

/**
 * Get the `tessedit_char_whitelist` field from a `TesseractConfig`.
 * # Safety
 * Pointer must be a valid handle returned by this library.
 */
char *kreuzberg_tesseract_config_tessedit_char_whitelist(const KREUZBERGTesseractConfig *ptr);

/**
 * Get the `tessedit_char_blacklist` field from a `TesseractConfig`.
 * # Safety
 * Pointer must be a valid handle returned by this library.
 */
char *kreuzberg_tesseract_config_tessedit_char_blacklist(const KREUZBERGTesseractConfig *ptr);

/**
 * Get the `tessedit_use_primary_params_model` field from a `TesseractConfig`.
 * # Safety
 * Pointer must be a valid handle returned by this library.
 */
int32_t kreuzberg_tesseract_config_tessedit_use_primary_params_model(const KREUZBERGTesseractConfig *ptr);

/**
 * Get the `textord_space_size_is_variable` field from a `TesseractConfig`.
 * # Safety
 * Pointer must be a valid handle returned by this library.
 */
int32_t kreuzberg_tesseract_config_textord_space_size_is_variable(const KREUZBERGTesseractConfig *ptr);

/**
 * Get the `thresholding_method` field from a `TesseractConfig`.
 * # Safety
 * Pointer must be a valid handle returned by this library.
 */
int32_t kreuzberg_tesseract_config_thresholding_method(const KREUZBERGTesseractConfig *ptr);

/**
 * \note SAFETY: Caller must ensure all pointer arguments are valid or null. Returned pointers must be
 * freed with the appropriate free function.
 */
KREUZBERGTesseractConfig *kreuzberg_tesseract_config_default(void);

/**
 * Create a `ImagePreprocessingMetadata` from a JSON string. Returns null on failure.
 * # Safety
 * JSON string must be valid UTF-8 and null-terminated.
 * Returned handle must be freed with `kreuzberg_image_preprocessing_metadata_free`.
 */
KREUZBERGImagePreprocessingMetadata *kreuzberg_image_preprocessing_metadata_from_json(const char *json);

/**
 * Serialize a `ImagePreprocessingMetadata` to a JSON string. Returns null on failure.
 * # Safety
 * `ptr` must be a valid, non-null pointer returned by a `kreuzberg` function.
 * The returned string must be freed with `kreuzberg_free_string`.
 */
char *kreuzberg_image_preprocessing_metadata_to_json(const KREUZBERGImagePreprocessingMetadata *ptr);

/**
 * Free a `ImagePreprocessingMetadata` handle.
 * # Safety
 * Pointer must have been returned by this library, or be null.
 */
void kreuzberg_image_preprocessing_metadata_free(KREUZBERGImagePreprocessingMetadata *ptr);

/**
 * Get the `target_dpi` field from a `ImagePreprocessingMetadata`.
 * # Safety
 * Pointer must be a valid handle returned by this library.
 */
int32_t kreuzberg_image_preprocessing_metadata_target_dpi(const KREUZBERGImagePreprocessingMetadata *ptr);

/**
 * Get the `scale_factor` field from a `ImagePreprocessingMetadata`.
 * # Safety
 * Pointer must be a valid handle returned by this library.
 */
double kreuzberg_image_preprocessing_metadata_scale_factor(const KREUZBERGImagePreprocessingMetadata *ptr);

/**
 * Get the `auto_adjusted` field from a `ImagePreprocessingMetadata`.
 * # Safety
 * Pointer must be a valid handle returned by this library.
 */
int32_t kreuzberg_image_preprocessing_metadata_auto_adjusted(const KREUZBERGImagePreprocessingMetadata *ptr);

/**
 * Get the `final_dpi` field from a `ImagePreprocessingMetadata`.
 * # Safety
 * Pointer must be a valid handle returned by this library.
 */
int32_t kreuzberg_image_preprocessing_metadata_final_dpi(const KREUZBERGImagePreprocessingMetadata *ptr);

/**
 * Get the `resample_method` field from a `ImagePreprocessingMetadata`.
 * # Safety
 * Pointer must be a valid handle returned by this library.
 */
char *kreuzberg_image_preprocessing_metadata_resample_method(const KREUZBERGImagePreprocessingMetadata *ptr);

/**
 * Get the `dimension_clamped` field from a `ImagePreprocessingMetadata`.
 * # Safety
 * Pointer must be a valid handle returned by this library.
 */
int32_t kreuzberg_image_preprocessing_metadata_dimension_clamped(const KREUZBERGImagePreprocessingMetadata *ptr);

/**
 * Get the `calculated_dpi` field from a `ImagePreprocessingMetadata`.
 * # Safety
 * Pointer must be a valid handle returned by this library.
 */
int32_t kreuzberg_image_preprocessing_metadata_calculated_dpi(const KREUZBERGImagePreprocessingMetadata *ptr);

/**
 * Get the `skipped_resize` field from a `ImagePreprocessingMetadata`.
 * # Safety
 * Pointer must be a valid handle returned by this library.
 */
int32_t kreuzberg_image_preprocessing_metadata_skipped_resize(const KREUZBERGImagePreprocessingMetadata *ptr);

/**
 * Get the `resize_error` field from a `ImagePreprocessingMetadata`.
 * # Safety
 * Pointer must be a valid handle returned by this library.
 */
char *kreuzberg_image_preprocessing_metadata_resize_error(const KREUZBERGImagePreprocessingMetadata *ptr);

/**
 * Create a `Metadata` from a JSON string. Returns null on failure.
 * # Safety
 * JSON string must be valid UTF-8 and null-terminated.
 * Returned handle must be freed with `kreuzberg_metadata_free`.
 */
KREUZBERGMetadata *kreuzberg_metadata_from_json(const char *json);

/**
 * Serialize a `Metadata` to a JSON string. Returns null on failure.
 * # Safety
 * `ptr` must be a valid, non-null pointer returned by a `kreuzberg` function.
 * The returned string must be freed with `kreuzberg_free_string`.
 */
char *kreuzberg_metadata_to_json(const KREUZBERGMetadata *ptr);

/**
 * Free a `Metadata` handle.
 * # Safety
 * Pointer must have been returned by this library, or be null.
 */
void kreuzberg_metadata_free(KREUZBERGMetadata *ptr);

/**
 * Get the `title` field from a `Metadata`.
 * # Safety
 * Pointer must be a valid handle returned by this library.
 */
char *kreuzberg_metadata_title(const KREUZBERGMetadata *ptr);

/**
 * Get the `subject` field from a `Metadata`.
 * # Safety
 * Pointer must be a valid handle returned by this library.
 */
char *kreuzberg_metadata_subject(const KREUZBERGMetadata *ptr);

/**
 * Get the `authors` field from a `Metadata`.
 * # Safety
 * Pointer must be a valid handle returned by this library.
 */
char *kreuzberg_metadata_authors(const KREUZBERGMetadata *ptr);

/**
 * Get the `keywords` field from a `Metadata`.
 * # Safety
 * Pointer must be a valid handle returned by this library.
 */
char *kreuzberg_metadata_keywords(const KREUZBERGMetadata *ptr);

/**
 * Get the `language` field from a `Metadata`.
 * # Safety
 * Pointer must be a valid handle returned by this library.
 */
char *kreuzberg_metadata_language(const KREUZBERGMetadata *ptr);

/**
 * Get the `created_at` field from a `Metadata`.
 * # Safety
 * Pointer must be a valid handle returned by this library.
 */
char *kreuzberg_metadata_created_at(const KREUZBERGMetadata *ptr);

/**
 * Get the `modified_at` field from a `Metadata`.
 * # Safety
 * Pointer must be a valid handle returned by this library.
 */
char *kreuzberg_metadata_modified_at(const KREUZBERGMetadata *ptr);

/**
 * Get the `created_by` field from a `Metadata`.
 * # Safety
 * Pointer must be a valid handle returned by this library.
 */
char *kreuzberg_metadata_created_by(const KREUZBERGMetadata *ptr);

/**
 * Get the `modified_by` field from a `Metadata`.
 * # Safety
 * Pointer must be a valid handle returned by this library.
 */
char *kreuzberg_metadata_modified_by(const KREUZBERGMetadata *ptr);

/**
 * Get the `pages` field from a `Metadata`.
 * # Safety
 * Pointer must be a valid handle returned by this library.
 */
KREUZBERGPageStructure *kreuzberg_metadata_pages(const KREUZBERGMetadata *ptr);

/**
 * Get the `format` field from a `Metadata`.
 * # Safety
 * Pointer must be a valid handle returned by this library.
 */
KREUZBERGFormatMetadata *kreuzberg_metadata_format(const KREUZBERGMetadata *ptr);

/**
 * Get the `image_preprocessing` field from a `Metadata`.
 * # Safety
 * Pointer must be a valid handle returned by this library.
 */
KREUZBERGImagePreprocessingMetadata *kreuzberg_metadata_image_preprocessing(const KREUZBERGMetadata *ptr);

/**
 * Get the `json_schema` field from a `Metadata`.
 * # Safety
 * Pointer must be a valid handle returned by this library.
 */
char *kreuzberg_metadata_json_schema(const KREUZBERGMetadata *ptr);

/**
 * Get the `error` field from a `Metadata`.
 * # Safety
 * Pointer must be a valid handle returned by this library.
 */
KREUZBERGErrorMetadata *kreuzberg_metadata_error(const KREUZBERGMetadata *ptr);

/**
 * Get the `extraction_duration_ms` field from a `Metadata`.
 * # Safety
 * Pointer must be a valid handle returned by this library.
 */
uint64_t kreuzberg_metadata_extraction_duration_ms(const KREUZBERGMetadata *ptr);

/**
 * Get the `category` field from a `Metadata`.
 * # Safety
 * Pointer must be a valid handle returned by this library.
 */
char *kreuzberg_metadata_category(const KREUZBERGMetadata *ptr);

/**
 * Get the `tags` field from a `Metadata`.
 * # Safety
 * Pointer must be a valid handle returned by this library.
 */
char *kreuzberg_metadata_tags(const KREUZBERGMetadata *ptr);

/**
 * Get the `document_version` field from a `Metadata`.
 * # Safety
 * Pointer must be a valid handle returned by this library.
 */
char *kreuzberg_metadata_document_version(const KREUZBERGMetadata *ptr);

/**
 * Get the `abstract_text` field from a `Metadata`.
 * # Safety
 * Pointer must be a valid handle returned by this library.
 */
char *kreuzberg_metadata_abstract_text(const KREUZBERGMetadata *ptr);

/**
 * Get the `output_format` field from a `Metadata`.
 * # Safety
 * Pointer must be a valid handle returned by this library.
 */
char *kreuzberg_metadata_output_format(const KREUZBERGMetadata *ptr);

/**
 * Get the `ocr_used` field from a `Metadata`.
 * # Safety
 * Pointer must be a valid handle returned by this library.
 */
int32_t kreuzberg_metadata_ocr_used(const KREUZBERGMetadata *ptr);

/**
 * Get the `additional` field from a `Metadata`.
 * # Safety
 * Pointer must be a valid handle returned by this library.
 */
char *kreuzberg_metadata_additional(const KREUZBERGMetadata *ptr);

/**
 * Returns `true` when no metadata fields, format-specific metadata, or
 * additional postprocessor fields are populated.
 * \note SAFETY: Caller must ensure all pointer arguments are valid or null. Returned pointers must be
 * freed with the appropriate free function.
 */
int32_t kreuzberg_metadata_is_empty(const KREUZBERGMetadata *this_);

/**
 * Create a `ExcelMetadata` from a JSON string. Returns null on failure.
 * # Safety
 * JSON string must be valid UTF-8 and null-terminated.
 * Returned handle must be freed with `kreuzberg_excel_metadata_free`.
 */
KREUZBERGExcelMetadata *kreuzberg_excel_metadata_from_json(const char *json);

/**
 * Serialize a `ExcelMetadata` to a JSON string. Returns null on failure.
 * # Safety
 * `ptr` must be a valid, non-null pointer returned by a `kreuzberg` function.
 * The returned string must be freed with `kreuzberg_free_string`.
 */
char *kreuzberg_excel_metadata_to_json(const KREUZBERGExcelMetadata *ptr);

/**
 * Free a `ExcelMetadata` handle.
 * # Safety
 * Pointer must have been returned by this library, or be null.
 */
void kreuzberg_excel_metadata_free(KREUZBERGExcelMetadata *ptr);

/**
 * Get the `sheet_count` field from a `ExcelMetadata`.
 * # Safety
 * Pointer must be a valid handle returned by this library.
 */
uint32_t kreuzberg_excel_metadata_sheet_count(const KREUZBERGExcelMetadata *ptr);

/**
 * Get the `sheet_names` field from a `ExcelMetadata`.
 * # Safety
 * Pointer must be a valid handle returned by this library.
 */
char *kreuzberg_excel_metadata_sheet_names(const KREUZBERGExcelMetadata *ptr);

/**
 * Create a `EmailMetadata` from a JSON string. Returns null on failure.
 * # Safety
 * JSON string must be valid UTF-8 and null-terminated.
 * Returned handle must be freed with `kreuzberg_email_metadata_free`.
 */
KREUZBERGEmailMetadata *kreuzberg_email_metadata_from_json(const char *json);

/**
 * Serialize a `EmailMetadata` to a JSON string. Returns null on failure.
 * # Safety
 * `ptr` must be a valid, non-null pointer returned by a `kreuzberg` function.
 * The returned string must be freed with `kreuzberg_free_string`.
 */
char *kreuzberg_email_metadata_to_json(const KREUZBERGEmailMetadata *ptr);

/**
 * Free a `EmailMetadata` handle.
 * # Safety
 * Pointer must have been returned by this library, or be null.
 */
void kreuzberg_email_metadata_free(KREUZBERGEmailMetadata *ptr);

/**
 * Get the `from_email` field from a `EmailMetadata`.
 * # Safety
 * Pointer must be a valid handle returned by this library.
 */
char *kreuzberg_email_metadata_from_email(const KREUZBERGEmailMetadata *ptr);

/**
 * Get the `from_name` field from a `EmailMetadata`.
 * # Safety
 * Pointer must be a valid handle returned by this library.
 */
char *kreuzberg_email_metadata_from_name(const KREUZBERGEmailMetadata *ptr);

/**
 * Get the `to_emails` field from a `EmailMetadata`.
 * # Safety
 * Pointer must be a valid handle returned by this library.
 */
char *kreuzberg_email_metadata_to_emails(const KREUZBERGEmailMetadata *ptr);

/**
 * Get the `cc_emails` field from a `EmailMetadata`.
 * # Safety
 * Pointer must be a valid handle returned by this library.
 */
char *kreuzberg_email_metadata_cc_emails(const KREUZBERGEmailMetadata *ptr);

/**
 * Get the `bcc_emails` field from a `EmailMetadata`.
 * # Safety
 * Pointer must be a valid handle returned by this library.
 */
char *kreuzberg_email_metadata_bcc_emails(const KREUZBERGEmailMetadata *ptr);

/**
 * Get the `message_id` field from a `EmailMetadata`.
 * # Safety
 * Pointer must be a valid handle returned by this library.
 */
char *kreuzberg_email_metadata_message_id(const KREUZBERGEmailMetadata *ptr);

/**
 * Get the `attachments` field from a `EmailMetadata`.
 * # Safety
 * Pointer must be a valid handle returned by this library.
 */
char *kreuzberg_email_metadata_attachments(const KREUZBERGEmailMetadata *ptr);

/**
 * Create a `ArchiveMetadata` from a JSON string. Returns null on failure.
 * # Safety
 * JSON string must be valid UTF-8 and null-terminated.
 * Returned handle must be freed with `kreuzberg_archive_metadata_free`.
 */
KREUZBERGArchiveMetadata *kreuzberg_archive_metadata_from_json(const char *json);

/**
 * Serialize a `ArchiveMetadata` to a JSON string. Returns null on failure.
 * # Safety
 * `ptr` must be a valid, non-null pointer returned by a `kreuzberg` function.
 * The returned string must be freed with `kreuzberg_free_string`.
 */
char *kreuzberg_archive_metadata_to_json(const KREUZBERGArchiveMetadata *ptr);

/**
 * Free a `ArchiveMetadata` handle.
 * # Safety
 * Pointer must have been returned by this library, or be null.
 */
void kreuzberg_archive_metadata_free(KREUZBERGArchiveMetadata *ptr);

/**
 * Get the `format` field from a `ArchiveMetadata`.
 * # Safety
 * Pointer must be a valid handle returned by this library.
 */
char *kreuzberg_archive_metadata_format(const KREUZBERGArchiveMetadata *ptr);

/**
 * Get the `file_count` field from a `ArchiveMetadata`.
 * # Safety
 * Pointer must be a valid handle returned by this library.
 */
uint32_t kreuzberg_archive_metadata_file_count(const KREUZBERGArchiveMetadata *ptr);

/**
 * Get the `file_list` field from a `ArchiveMetadata`.
 * # Safety
 * Pointer must be a valid handle returned by this library.
 */
char *kreuzberg_archive_metadata_file_list(const KREUZBERGArchiveMetadata *ptr);

/**
 * Get the `total_size` field from a `ArchiveMetadata`.
 * # Safety
 * Pointer must be a valid handle returned by this library.
 */
uint64_t kreuzberg_archive_metadata_total_size(const KREUZBERGArchiveMetadata *ptr);

/**
 * Get the `compressed_size` field from a `ArchiveMetadata`.
 * # Safety
 * Pointer must be a valid handle returned by this library.
 */
uint64_t kreuzberg_archive_metadata_compressed_size(const KREUZBERGArchiveMetadata *ptr);

/**
 * Create a `ImageMetadata` from a JSON string. Returns null on failure.
 * # Safety
 * JSON string must be valid UTF-8 and null-terminated.
 * Returned handle must be freed with `kreuzberg_image_metadata_free`.
 */
KREUZBERGImageMetadata *kreuzberg_image_metadata_from_json(const char *json);

/**
 * Serialize a `ImageMetadata` to a JSON string. Returns null on failure.
 * # Safety
 * `ptr` must be a valid, non-null pointer returned by a `kreuzberg` function.
 * The returned string must be freed with `kreuzberg_free_string`.
 */
char *kreuzberg_image_metadata_to_json(const KREUZBERGImageMetadata *ptr);

/**
 * Free a `ImageMetadata` handle.
 * # Safety
 * Pointer must have been returned by this library, or be null.
 */
void kreuzberg_image_metadata_free(KREUZBERGImageMetadata *ptr);

/**
 * Get the `width` field from a `ImageMetadata`.
 * # Safety
 * Pointer must be a valid handle returned by this library.
 */
uint32_t kreuzberg_image_metadata_width(const KREUZBERGImageMetadata *ptr);

/**
 * Get the `height` field from a `ImageMetadata`.
 * # Safety
 * Pointer must be a valid handle returned by this library.
 */
uint32_t kreuzberg_image_metadata_height(const KREUZBERGImageMetadata *ptr);

/**
 * Get the `format` field from a `ImageMetadata`.
 * # Safety
 * Pointer must be a valid handle returned by this library.
 */
char *kreuzberg_image_metadata_format(const KREUZBERGImageMetadata *ptr);

/**
 * Get the `exif` field from a `ImageMetadata`.
 * # Safety
 * Pointer must be a valid handle returned by this library.
 */
char *kreuzberg_image_metadata_exif(const KREUZBERGImageMetadata *ptr);

/**
 * Create a `XmlMetadata` from a JSON string. Returns null on failure.
 * # Safety
 * JSON string must be valid UTF-8 and null-terminated.
 * Returned handle must be freed with `kreuzberg_xml_metadata_free`.
 */
KREUZBERGXmlMetadata *kreuzberg_xml_metadata_from_json(const char *json);

/**
 * Serialize a `XmlMetadata` to a JSON string. Returns null on failure.
 * # Safety
 * `ptr` must be a valid, non-null pointer returned by a `kreuzberg` function.
 * The returned string must be freed with `kreuzberg_free_string`.
 */
char *kreuzberg_xml_metadata_to_json(const KREUZBERGXmlMetadata *ptr);

/**
 * Free a `XmlMetadata` handle.
 * # Safety
 * Pointer must have been returned by this library, or be null.
 */
void kreuzberg_xml_metadata_free(KREUZBERGXmlMetadata *ptr);

/**
 * Get the `element_count` field from a `XmlMetadata`.
 * # Safety
 * Pointer must be a valid handle returned by this library.
 */
uint32_t kreuzberg_xml_metadata_element_count(const KREUZBERGXmlMetadata *ptr);

/**
 * Get the `unique_elements` field from a `XmlMetadata`.
 * # Safety
 * Pointer must be a valid handle returned by this library.
 */
char *kreuzberg_xml_metadata_unique_elements(const KREUZBERGXmlMetadata *ptr);

/**
 * Create a `TextMetadata` from a JSON string. Returns null on failure.
 * # Safety
 * JSON string must be valid UTF-8 and null-terminated.
 * Returned handle must be freed with `kreuzberg_text_metadata_free`.
 */
KREUZBERGTextMetadata *kreuzberg_text_metadata_from_json(const char *json);

/**
 * Serialize a `TextMetadata` to a JSON string. Returns null on failure.
 * # Safety
 * `ptr` must be a valid, non-null pointer returned by a `kreuzberg` function.
 * The returned string must be freed with `kreuzberg_free_string`.
 */
char *kreuzberg_text_metadata_to_json(const KREUZBERGTextMetadata *ptr);

/**
 * Free a `TextMetadata` handle.
 * # Safety
 * Pointer must have been returned by this library, or be null.
 */
void kreuzberg_text_metadata_free(KREUZBERGTextMetadata *ptr);

/**
 * Get the `line_count` field from a `TextMetadata`.
 * # Safety
 * Pointer must be a valid handle returned by this library.
 */
uint32_t kreuzberg_text_metadata_line_count(const KREUZBERGTextMetadata *ptr);

/**
 * Get the `word_count` field from a `TextMetadata`.
 * # Safety
 * Pointer must be a valid handle returned by this library.
 */
uint32_t kreuzberg_text_metadata_word_count(const KREUZBERGTextMetadata *ptr);

/**
 * Get the `character_count` field from a `TextMetadata`.
 * # Safety
 * Pointer must be a valid handle returned by this library.
 */
uint32_t kreuzberg_text_metadata_character_count(const KREUZBERGTextMetadata *ptr);

/**
 * Get the `headers` field from a `TextMetadata`.
 * # Safety
 * Pointer must be a valid handle returned by this library.
 */
char *kreuzberg_text_metadata_headers(const KREUZBERGTextMetadata *ptr);

/**
 * Create a `HeaderMetadata` from a JSON string. Returns null on failure.
 * # Safety
 * JSON string must be valid UTF-8 and null-terminated.
 * Returned handle must be freed with `kreuzberg_header_metadata_free`.
 */
KREUZBERGHeaderMetadata *kreuzberg_header_metadata_from_json(const char *json);

/**
 * Serialize a `HeaderMetadata` to a JSON string. Returns null on failure.
 * # Safety
 * `ptr` must be a valid, non-null pointer returned by a `kreuzberg` function.
 * The returned string must be freed with `kreuzberg_free_string`.
 */
char *kreuzberg_header_metadata_to_json(const KREUZBERGHeaderMetadata *ptr);

/**
 * Free a `HeaderMetadata` handle.
 * # Safety
 * Pointer must have been returned by this library, or be null.
 */
void kreuzberg_header_metadata_free(KREUZBERGHeaderMetadata *ptr);

/**
 * Get the `level` field from a `HeaderMetadata`.
 * # Safety
 * Pointer must be a valid handle returned by this library.
 */
uint8_t kreuzberg_header_metadata_level(const KREUZBERGHeaderMetadata *ptr);

/**
 * Get the `text` field from a `HeaderMetadata`.
 * # Safety
 * Pointer must be a valid handle returned by this library.
 */
char *kreuzberg_header_metadata_text(const KREUZBERGHeaderMetadata *ptr);

/**
 * Get the `id` field from a `HeaderMetadata`.
 * # Safety
 * Pointer must be a valid handle returned by this library.
 */
char *kreuzberg_header_metadata_id(const KREUZBERGHeaderMetadata *ptr);

/**
 * Get the `depth` field from a `HeaderMetadata`.
 * # Safety
 * Pointer must be a valid handle returned by this library.
 */
uint32_t kreuzberg_header_metadata_depth(const KREUZBERGHeaderMetadata *ptr);

/**
 * Get the `html_offset` field from a `HeaderMetadata`.
 * # Safety
 * Pointer must be a valid handle returned by this library.
 */
uint32_t kreuzberg_header_metadata_html_offset(const KREUZBERGHeaderMetadata *ptr);

/**
 * Create a `LinkMetadata` from a JSON string. Returns null on failure.
 * # Safety
 * JSON string must be valid UTF-8 and null-terminated.
 * Returned handle must be freed with `kreuzberg_link_metadata_free`.
 */
KREUZBERGLinkMetadata *kreuzberg_link_metadata_from_json(const char *json);

/**
 * Serialize a `LinkMetadata` to a JSON string. Returns null on failure.
 * # Safety
 * `ptr` must be a valid, non-null pointer returned by a `kreuzberg` function.
 * The returned string must be freed with `kreuzberg_free_string`.
 */
char *kreuzberg_link_metadata_to_json(const KREUZBERGLinkMetadata *ptr);

/**
 * Free a `LinkMetadata` handle.
 * # Safety
 * Pointer must have been returned by this library, or be null.
 */
void kreuzberg_link_metadata_free(KREUZBERGLinkMetadata *ptr);

/**
 * Get the `href` field from a `LinkMetadata`.
 * # Safety
 * Pointer must be a valid handle returned by this library.
 */
char *kreuzberg_link_metadata_href(const KREUZBERGLinkMetadata *ptr);

/**
 * Get the `text` field from a `LinkMetadata`.
 * # Safety
 * Pointer must be a valid handle returned by this library.
 */
char *kreuzberg_link_metadata_text(const KREUZBERGLinkMetadata *ptr);

/**
 * Get the `title` field from a `LinkMetadata`.
 * # Safety
 * Pointer must be a valid handle returned by this library.
 */
char *kreuzberg_link_metadata_title(const KREUZBERGLinkMetadata *ptr);

/**
 * Get the `link_type` field from a `LinkMetadata`.
 * # Safety
 * Pointer must be a valid handle returned by this library.
 */
KREUZBERGLinkType *kreuzberg_link_metadata_link_type(const KREUZBERGLinkMetadata *ptr);

/**
 * Get the `rel` field from a `LinkMetadata`.
 * # Safety
 * Pointer must be a valid handle returned by this library.
 */
char *kreuzberg_link_metadata_rel(const KREUZBERGLinkMetadata *ptr);

/**
 * Create a `ImageMetadataType` from a JSON string. Returns null on failure.
 * # Safety
 * JSON string must be valid UTF-8 and null-terminated.
 * Returned handle must be freed with `kreuzberg_image_metadata_type_free`.
 */
KREUZBERGImageMetadataType *kreuzberg_image_metadata_type_from_json(const char *json);

/**
 * Serialize a `ImageMetadataType` to a JSON string. Returns null on failure.
 * # Safety
 * `ptr` must be a valid, non-null pointer returned by a `kreuzberg` function.
 * The returned string must be freed with `kreuzberg_free_string`.
 */
char *kreuzberg_image_metadata_type_to_json(const KREUZBERGImageMetadataType *ptr);

/**
 * Free a `ImageMetadataType` handle.
 * # Safety
 * Pointer must have been returned by this library, or be null.
 */
void kreuzberg_image_metadata_type_free(KREUZBERGImageMetadataType *ptr);

/**
 * Get the `src` field from a `ImageMetadataType`.
 * # Safety
 * Pointer must be a valid handle returned by this library.
 */
char *kreuzberg_image_metadata_type_src(const KREUZBERGImageMetadataType *ptr);

/**
 * Get the `alt` field from a `ImageMetadataType`.
 * # Safety
 * Pointer must be a valid handle returned by this library.
 */
char *kreuzberg_image_metadata_type_alt(const KREUZBERGImageMetadataType *ptr);

/**
 * Get the `title` field from a `ImageMetadataType`.
 * # Safety
 * Pointer must be a valid handle returned by this library.
 */
char *kreuzberg_image_metadata_type_title(const KREUZBERGImageMetadataType *ptr);

/**
 * Get the `image_type` field from a `ImageMetadataType`.
 * # Safety
 * Pointer must be a valid handle returned by this library.
 */
KREUZBERGImageType *kreuzberg_image_metadata_type_image_type(const KREUZBERGImageMetadataType *ptr);

/**
 * Create a `StructuredData` from a JSON string. Returns null on failure.
 * # Safety
 * JSON string must be valid UTF-8 and null-terminated.
 * Returned handle must be freed with `kreuzberg_structured_data_free`.
 */
KREUZBERGStructuredData *kreuzberg_structured_data_from_json(const char *json);

/**
 * Serialize a `StructuredData` to a JSON string. Returns null on failure.
 * # Safety
 * `ptr` must be a valid, non-null pointer returned by a `kreuzberg` function.
 * The returned string must be freed with `kreuzberg_free_string`.
 */
char *kreuzberg_structured_data_to_json(const KREUZBERGStructuredData *ptr);

/**
 * Free a `StructuredData` handle.
 * # Safety
 * Pointer must have been returned by this library, or be null.
 */
void kreuzberg_structured_data_free(KREUZBERGStructuredData *ptr);

/**
 * Get the `data_type` field from a `StructuredData`.
 * # Safety
 * Pointer must be a valid handle returned by this library.
 */
KREUZBERGStructuredDataType *kreuzberg_structured_data_data_type(const KREUZBERGStructuredData *ptr);

/**
 * Get the `raw_json` field from a `StructuredData`.
 * # Safety
 * Pointer must be a valid handle returned by this library.
 */
char *kreuzberg_structured_data_raw_json(const KREUZBERGStructuredData *ptr);

/**
 * Get the `schema_type` field from a `StructuredData`.
 * # Safety
 * Pointer must be a valid handle returned by this library.
 */
char *kreuzberg_structured_data_schema_type(const KREUZBERGStructuredData *ptr);

/**
 * Create a `HtmlMetadata` from a JSON string. Returns null on failure.
 * # Safety
 * JSON string must be valid UTF-8 and null-terminated.
 * Returned handle must be freed with `kreuzberg_html_metadata_free`.
 */
KREUZBERGHtmlMetadata *kreuzberg_html_metadata_from_json(const char *json);

/**
 * Serialize a `HtmlMetadata` to a JSON string. Returns null on failure.
 * # Safety
 * `ptr` must be a valid, non-null pointer returned by a `kreuzberg` function.
 * The returned string must be freed with `kreuzberg_free_string`.
 */
char *kreuzberg_html_metadata_to_json(const KREUZBERGHtmlMetadata *ptr);

/**
 * Free a `HtmlMetadata` handle.
 * # Safety
 * Pointer must have been returned by this library, or be null.
 */
void kreuzberg_html_metadata_free(KREUZBERGHtmlMetadata *ptr);

/**
 * Get the `title` field from a `HtmlMetadata`.
 * # Safety
 * Pointer must be a valid handle returned by this library.
 */
char *kreuzberg_html_metadata_title(const KREUZBERGHtmlMetadata *ptr);

/**
 * Get the `description` field from a `HtmlMetadata`.
 * # Safety
 * Pointer must be a valid handle returned by this library.
 */
char *kreuzberg_html_metadata_description(const KREUZBERGHtmlMetadata *ptr);

/**
 * Get the `keywords` field from a `HtmlMetadata`.
 * # Safety
 * Pointer must be a valid handle returned by this library.
 */
char *kreuzberg_html_metadata_keywords(const KREUZBERGHtmlMetadata *ptr);

/**
 * Get the `author` field from a `HtmlMetadata`.
 * # Safety
 * Pointer must be a valid handle returned by this library.
 */
char *kreuzberg_html_metadata_author(const KREUZBERGHtmlMetadata *ptr);

/**
 * Get the `canonical_url` field from a `HtmlMetadata`.
 * # Safety
 * Pointer must be a valid handle returned by this library.
 */
char *kreuzberg_html_metadata_canonical_url(const KREUZBERGHtmlMetadata *ptr);

/**
 * Get the `base_href` field from a `HtmlMetadata`.
 * # Safety
 * Pointer must be a valid handle returned by this library.
 */
char *kreuzberg_html_metadata_base_href(const KREUZBERGHtmlMetadata *ptr);

/**
 * Get the `language` field from a `HtmlMetadata`.
 * # Safety
 * Pointer must be a valid handle returned by this library.
 */
char *kreuzberg_html_metadata_language(const KREUZBERGHtmlMetadata *ptr);

/**
 * Get the `text_direction` field from a `HtmlMetadata`.
 * # Safety
 * Pointer must be a valid handle returned by this library.
 */
KREUZBERGTextDirection *kreuzberg_html_metadata_text_direction(const KREUZBERGHtmlMetadata *ptr);

/**
 * Get the `open_graph` field from a `HtmlMetadata`.
 * # Safety
 * Pointer must be a valid handle returned by this library.
 */
char *kreuzberg_html_metadata_open_graph(const KREUZBERGHtmlMetadata *ptr);

/**
 * Get the `twitter_card` field from a `HtmlMetadata`.
 * # Safety
 * Pointer must be a valid handle returned by this library.
 */
char *kreuzberg_html_metadata_twitter_card(const KREUZBERGHtmlMetadata *ptr);

/**
 * Get the `meta_tags` field from a `HtmlMetadata`.
 * # Safety
 * Pointer must be a valid handle returned by this library.
 */
char *kreuzberg_html_metadata_meta_tags(const KREUZBERGHtmlMetadata *ptr);

/**
 * Get the `headers` field from a `HtmlMetadata`.
 * # Safety
 * Pointer must be a valid handle returned by this library.
 */
char *kreuzberg_html_metadata_headers(const KREUZBERGHtmlMetadata *ptr);

/**
 * Get the `links` field from a `HtmlMetadata`.
 * # Safety
 * Pointer must be a valid handle returned by this library.
 */
char *kreuzberg_html_metadata_links(const KREUZBERGHtmlMetadata *ptr);

/**
 * Get the `images` field from a `HtmlMetadata`.
 * # Safety
 * Pointer must be a valid handle returned by this library.
 */
char *kreuzberg_html_metadata_images(const KREUZBERGHtmlMetadata *ptr);

/**
 * Get the `structured_data` field from a `HtmlMetadata`.
 * # Safety
 * Pointer must be a valid handle returned by this library.
 */
char *kreuzberg_html_metadata_structured_data(const KREUZBERGHtmlMetadata *ptr);

/**
 * Create a `OcrMetadata` from a JSON string. Returns null on failure.
 * # Safety
 * JSON string must be valid UTF-8 and null-terminated.
 * Returned handle must be freed with `kreuzberg_ocr_metadata_free`.
 */
KREUZBERGOcrMetadata *kreuzberg_ocr_metadata_from_json(const char *json);

/**
 * Serialize a `OcrMetadata` to a JSON string. Returns null on failure.
 * # Safety
 * `ptr` must be a valid, non-null pointer returned by a `kreuzberg` function.
 * The returned string must be freed with `kreuzberg_free_string`.
 */
char *kreuzberg_ocr_metadata_to_json(const KREUZBERGOcrMetadata *ptr);

/**
 * Free a `OcrMetadata` handle.
 * # Safety
 * Pointer must have been returned by this library, or be null.
 */
void kreuzberg_ocr_metadata_free(KREUZBERGOcrMetadata *ptr);

/**
 * Get the `language` field from a `OcrMetadata`.
 * # Safety
 * Pointer must be a valid handle returned by this library.
 */
char *kreuzberg_ocr_metadata_language(const KREUZBERGOcrMetadata *ptr);

/**
 * Get the `psm` field from a `OcrMetadata`.
 * # Safety
 * Pointer must be a valid handle returned by this library.
 */
int32_t kreuzberg_ocr_metadata_psm(const KREUZBERGOcrMetadata *ptr);

/**
 * Get the `output_format` field from a `OcrMetadata`.
 * # Safety
 * Pointer must be a valid handle returned by this library.
 */
char *kreuzberg_ocr_metadata_output_format(const KREUZBERGOcrMetadata *ptr);

/**
 * Get the `table_count` field from a `OcrMetadata`.
 * # Safety
 * Pointer must be a valid handle returned by this library.
 */
uint32_t kreuzberg_ocr_metadata_table_count(const KREUZBERGOcrMetadata *ptr);

/**
 * Get the `table_rows` field from a `OcrMetadata`.
 * # Safety
 * Pointer must be a valid handle returned by this library.
 */
uint32_t kreuzberg_ocr_metadata_table_rows(const KREUZBERGOcrMetadata *ptr);

/**
 * Get the `table_cols` field from a `OcrMetadata`.
 * # Safety
 * Pointer must be a valid handle returned by this library.
 */
uint32_t kreuzberg_ocr_metadata_table_cols(const KREUZBERGOcrMetadata *ptr);

/**
 * Create a `ErrorMetadata` from a JSON string. Returns null on failure.
 * # Safety
 * JSON string must be valid UTF-8 and null-terminated.
 * Returned handle must be freed with `kreuzberg_error_metadata_free`.
 */
KREUZBERGErrorMetadata *kreuzberg_error_metadata_from_json(const char *json);

/**
 * Serialize a `ErrorMetadata` to a JSON string. Returns null on failure.
 * # Safety
 * `ptr` must be a valid, non-null pointer returned by a `kreuzberg` function.
 * The returned string must be freed with `kreuzberg_free_string`.
 */
char *kreuzberg_error_metadata_to_json(const KREUZBERGErrorMetadata *ptr);

/**
 * Free a `ErrorMetadata` handle.
 * # Safety
 * Pointer must have been returned by this library, or be null.
 */
void kreuzberg_error_metadata_free(KREUZBERGErrorMetadata *ptr);

/**
 * Get the `error_type` field from a `ErrorMetadata`.
 * # Safety
 * Pointer must be a valid handle returned by this library.
 */
char *kreuzberg_error_metadata_error_type(const KREUZBERGErrorMetadata *ptr);

/**
 * Get the `message` field from a `ErrorMetadata`.
 * # Safety
 * Pointer must be a valid handle returned by this library.
 */
char *kreuzberg_error_metadata_message(const KREUZBERGErrorMetadata *ptr);

/**
 * Create a `PptxMetadata` from a JSON string. Returns null on failure.
 * # Safety
 * JSON string must be valid UTF-8 and null-terminated.
 * Returned handle must be freed with `kreuzberg_pptx_metadata_free`.
 */
KREUZBERGPptxMetadata *kreuzberg_pptx_metadata_from_json(const char *json);

/**
 * Serialize a `PptxMetadata` to a JSON string. Returns null on failure.
 * # Safety
 * `ptr` must be a valid, non-null pointer returned by a `kreuzberg` function.
 * The returned string must be freed with `kreuzberg_free_string`.
 */
char *kreuzberg_pptx_metadata_to_json(const KREUZBERGPptxMetadata *ptr);

/**
 * Free a `PptxMetadata` handle.
 * # Safety
 * Pointer must have been returned by this library, or be null.
 */
void kreuzberg_pptx_metadata_free(KREUZBERGPptxMetadata *ptr);

/**
 * Get the `slide_count` field from a `PptxMetadata`.
 * # Safety
 * Pointer must be a valid handle returned by this library.
 */
uint32_t kreuzberg_pptx_metadata_slide_count(const KREUZBERGPptxMetadata *ptr);

/**
 * Get the `slide_names` field from a `PptxMetadata`.
 * # Safety
 * Pointer must be a valid handle returned by this library.
 */
char *kreuzberg_pptx_metadata_slide_names(const KREUZBERGPptxMetadata *ptr);

/**
 * Get the `image_count` field from a `PptxMetadata`.
 * # Safety
 * Pointer must be a valid handle returned by this library.
 */
uint32_t kreuzberg_pptx_metadata_image_count(const KREUZBERGPptxMetadata *ptr);

/**
 * Get the `table_count` field from a `PptxMetadata`.
 * # Safety
 * Pointer must be a valid handle returned by this library.
 */
uint32_t kreuzberg_pptx_metadata_table_count(const KREUZBERGPptxMetadata *ptr);

/**
 * Create a `DocxMetadata` from a JSON string. Returns null on failure.
 * # Safety
 * JSON string must be valid UTF-8 and null-terminated.
 * Returned handle must be freed with `kreuzberg_docx_metadata_free`.
 */
KREUZBERGDocxMetadata *kreuzberg_docx_metadata_from_json(const char *json);

/**
 * Serialize a `DocxMetadata` to a JSON string. Returns null on failure.
 * # Safety
 * `ptr` must be a valid, non-null pointer returned by a `kreuzberg` function.
 * The returned string must be freed with `kreuzberg_free_string`.
 */
char *kreuzberg_docx_metadata_to_json(const KREUZBERGDocxMetadata *ptr);

/**
 * Free a `DocxMetadata` handle.
 * # Safety
 * Pointer must have been returned by this library, or be null.
 */
void kreuzberg_docx_metadata_free(KREUZBERGDocxMetadata *ptr);

/**
 * Get the `core_properties` field from a `DocxMetadata`.
 * # Safety
 * Pointer must be a valid handle returned by this library.
 */
KREUZBERGCoreProperties *kreuzberg_docx_metadata_core_properties(const KREUZBERGDocxMetadata *ptr);

/**
 * Get the `app_properties` field from a `DocxMetadata`.
 * # Safety
 * Pointer must be a valid handle returned by this library.
 */
KREUZBERGDocxAppProperties *kreuzberg_docx_metadata_app_properties(const KREUZBERGDocxMetadata *ptr);

/**
 * Get the `custom_properties` field from a `DocxMetadata`.
 * # Safety
 * Pointer must be a valid handle returned by this library.
 */
char *kreuzberg_docx_metadata_custom_properties(const KREUZBERGDocxMetadata *ptr);

/**
 * Create a `CsvMetadata` from a JSON string. Returns null on failure.
 * # Safety
 * JSON string must be valid UTF-8 and null-terminated.
 * Returned handle must be freed with `kreuzberg_csv_metadata_free`.
 */
KREUZBERGCsvMetadata *kreuzberg_csv_metadata_from_json(const char *json);

/**
 * Serialize a `CsvMetadata` to a JSON string. Returns null on failure.
 * # Safety
 * `ptr` must be a valid, non-null pointer returned by a `kreuzberg` function.
 * The returned string must be freed with `kreuzberg_free_string`.
 */
char *kreuzberg_csv_metadata_to_json(const KREUZBERGCsvMetadata *ptr);

/**
 * Free a `CsvMetadata` handle.
 * # Safety
 * Pointer must have been returned by this library, or be null.
 */
void kreuzberg_csv_metadata_free(KREUZBERGCsvMetadata *ptr);

/**
 * Get the `row_count` field from a `CsvMetadata`.
 * # Safety
 * Pointer must be a valid handle returned by this library.
 */
uint32_t kreuzberg_csv_metadata_row_count(const KREUZBERGCsvMetadata *ptr);

/**
 * Get the `column_count` field from a `CsvMetadata`.
 * # Safety
 * Pointer must be a valid handle returned by this library.
 */
uint32_t kreuzberg_csv_metadata_column_count(const KREUZBERGCsvMetadata *ptr);

/**
 * Get the `delimiter` field from a `CsvMetadata`.
 * # Safety
 * Pointer must be a valid handle returned by this library.
 */
char *kreuzberg_csv_metadata_delimiter(const KREUZBERGCsvMetadata *ptr);

/**
 * Get the `has_header` field from a `CsvMetadata`.
 * # Safety
 * Pointer must be a valid handle returned by this library.
 */
int32_t kreuzberg_csv_metadata_has_header(const KREUZBERGCsvMetadata *ptr);

/**
 * Get the `column_types` field from a `CsvMetadata`.
 * # Safety
 * Pointer must be a valid handle returned by this library.
 */
char *kreuzberg_csv_metadata_column_types(const KREUZBERGCsvMetadata *ptr);

/**
 * Create a `BibtexMetadata` from a JSON string. Returns null on failure.
 * # Safety
 * JSON string must be valid UTF-8 and null-terminated.
 * Returned handle must be freed with `kreuzberg_bibtex_metadata_free`.
 */
KREUZBERGBibtexMetadata *kreuzberg_bibtex_metadata_from_json(const char *json);

/**
 * Serialize a `BibtexMetadata` to a JSON string. Returns null on failure.
 * # Safety
 * `ptr` must be a valid, non-null pointer returned by a `kreuzberg` function.
 * The returned string must be freed with `kreuzberg_free_string`.
 */
char *kreuzberg_bibtex_metadata_to_json(const KREUZBERGBibtexMetadata *ptr);

/**
 * Free a `BibtexMetadata` handle.
 * # Safety
 * Pointer must have been returned by this library, or be null.
 */
void kreuzberg_bibtex_metadata_free(KREUZBERGBibtexMetadata *ptr);

/**
 * Get the `entry_count` field from a `BibtexMetadata`.
 * # Safety
 * Pointer must be a valid handle returned by this library.
 */
uintptr_t kreuzberg_bibtex_metadata_entry_count(const KREUZBERGBibtexMetadata *ptr);

/**
 * Get the `citation_keys` field from a `BibtexMetadata`.
 * # Safety
 * Pointer must be a valid handle returned by this library.
 */
char *kreuzberg_bibtex_metadata_citation_keys(const KREUZBERGBibtexMetadata *ptr);

/**
 * Get the `authors` field from a `BibtexMetadata`.
 * # Safety
 * Pointer must be a valid handle returned by this library.
 */
char *kreuzberg_bibtex_metadata_authors(const KREUZBERGBibtexMetadata *ptr);

/**
 * Get the `year_range` field from a `BibtexMetadata`.
 * # Safety
 * Pointer must be a valid handle returned by this library.
 */
KREUZBERGYearRange *kreuzberg_bibtex_metadata_year_range(const KREUZBERGBibtexMetadata *ptr);

/**
 * Get the `entry_types` field from a `BibtexMetadata`.
 * # Safety
 * Pointer must be a valid handle returned by this library.
 */
char *kreuzberg_bibtex_metadata_entry_types(const KREUZBERGBibtexMetadata *ptr);

/**
 * Create a `CitationMetadata` from a JSON string. Returns null on failure.
 * # Safety
 * JSON string must be valid UTF-8 and null-terminated.
 * Returned handle must be freed with `kreuzberg_citation_metadata_free`.
 */
KREUZBERGCitationMetadata *kreuzberg_citation_metadata_from_json(const char *json);

/**
 * Serialize a `CitationMetadata` to a JSON string. Returns null on failure.
 * # Safety
 * `ptr` must be a valid, non-null pointer returned by a `kreuzberg` function.
 * The returned string must be freed with `kreuzberg_free_string`.
 */
char *kreuzberg_citation_metadata_to_json(const KREUZBERGCitationMetadata *ptr);

/**
 * Free a `CitationMetadata` handle.
 * # Safety
 * Pointer must have been returned by this library, or be null.
 */
void kreuzberg_citation_metadata_free(KREUZBERGCitationMetadata *ptr);

/**
 * Get the `citation_count` field from a `CitationMetadata`.
 * # Safety
 * Pointer must be a valid handle returned by this library.
 */
uintptr_t kreuzberg_citation_metadata_citation_count(const KREUZBERGCitationMetadata *ptr);

/**
 * Get the `format` field from a `CitationMetadata`.
 * # Safety
 * Pointer must be a valid handle returned by this library.
 */
char *kreuzberg_citation_metadata_format(const KREUZBERGCitationMetadata *ptr);

/**
 * Get the `authors` field from a `CitationMetadata`.
 * # Safety
 * Pointer must be a valid handle returned by this library.
 */
char *kreuzberg_citation_metadata_authors(const KREUZBERGCitationMetadata *ptr);

/**
 * Get the `year_range` field from a `CitationMetadata`.
 * # Safety
 * Pointer must be a valid handle returned by this library.
 */
KREUZBERGYearRange *kreuzberg_citation_metadata_year_range(const KREUZBERGCitationMetadata *ptr);

/**
 * Get the `dois` field from a `CitationMetadata`.
 * # Safety
 * Pointer must be a valid handle returned by this library.
 */
char *kreuzberg_citation_metadata_dois(const KREUZBERGCitationMetadata *ptr);

/**
 * Get the `keywords` field from a `CitationMetadata`.
 * # Safety
 * Pointer must be a valid handle returned by this library.
 */
char *kreuzberg_citation_metadata_keywords(const KREUZBERGCitationMetadata *ptr);

/**
 * Create a `YearRange` from a JSON string. Returns null on failure.
 * # Safety
 * JSON string must be valid UTF-8 and null-terminated.
 * Returned handle must be freed with `kreuzberg_year_range_free`.
 */
KREUZBERGYearRange *kreuzberg_year_range_from_json(const char *json);

/**
 * Serialize a `YearRange` to a JSON string. Returns null on failure.
 * # Safety
 * `ptr` must be a valid, non-null pointer returned by a `kreuzberg` function.
 * The returned string must be freed with `kreuzberg_free_string`.
 */
char *kreuzberg_year_range_to_json(const KREUZBERGYearRange *ptr);

/**
 * Free a `YearRange` handle.
 * # Safety
 * Pointer must have been returned by this library, or be null.
 */
void kreuzberg_year_range_free(KREUZBERGYearRange *ptr);

/**
 * Get the `min` field from a `YearRange`.
 * # Safety
 * Pointer must be a valid handle returned by this library.
 */
uint32_t kreuzberg_year_range_min(const KREUZBERGYearRange *ptr);

/**
 * Get the `max` field from a `YearRange`.
 * # Safety
 * Pointer must be a valid handle returned by this library.
 */
uint32_t kreuzberg_year_range_max(const KREUZBERGYearRange *ptr);

/**
 * Get the `years` field from a `YearRange`.
 * # Safety
 * Pointer must be a valid handle returned by this library.
 */
char *kreuzberg_year_range_years(const KREUZBERGYearRange *ptr);

/**
 * Create a `FictionBookMetadata` from a JSON string. Returns null on failure.
 * # Safety
 * JSON string must be valid UTF-8 and null-terminated.
 * Returned handle must be freed with `kreuzberg_fiction_book_metadata_free`.
 */
KREUZBERGFictionBookMetadata *kreuzberg_fiction_book_metadata_from_json(const char *json);

/**
 * Serialize a `FictionBookMetadata` to a JSON string. Returns null on failure.
 * # Safety
 * `ptr` must be a valid, non-null pointer returned by a `kreuzberg` function.
 * The returned string must be freed with `kreuzberg_free_string`.
 */
char *kreuzberg_fiction_book_metadata_to_json(const KREUZBERGFictionBookMetadata *ptr);

/**
 * Free a `FictionBookMetadata` handle.
 * # Safety
 * Pointer must have been returned by this library, or be null.
 */
void kreuzberg_fiction_book_metadata_free(KREUZBERGFictionBookMetadata *ptr);

/**
 * Get the `genres` field from a `FictionBookMetadata`.
 * # Safety
 * Pointer must be a valid handle returned by this library.
 */
char *kreuzberg_fiction_book_metadata_genres(const KREUZBERGFictionBookMetadata *ptr);

/**
 * Get the `sequences` field from a `FictionBookMetadata`.
 * # Safety
 * Pointer must be a valid handle returned by this library.
 */
char *kreuzberg_fiction_book_metadata_sequences(const KREUZBERGFictionBookMetadata *ptr);

/**
 * Get the `annotation` field from a `FictionBookMetadata`.
 * # Safety
 * Pointer must be a valid handle returned by this library.
 */
char *kreuzberg_fiction_book_metadata_annotation(const KREUZBERGFictionBookMetadata *ptr);

/**
 * Create a `DbfMetadata` from a JSON string. Returns null on failure.
 * # Safety
 * JSON string must be valid UTF-8 and null-terminated.
 * Returned handle must be freed with `kreuzberg_dbf_metadata_free`.
 */
KREUZBERGDbfMetadata *kreuzberg_dbf_metadata_from_json(const char *json);

/**
 * Serialize a `DbfMetadata` to a JSON string. Returns null on failure.
 * # Safety
 * `ptr` must be a valid, non-null pointer returned by a `kreuzberg` function.
 * The returned string must be freed with `kreuzberg_free_string`.
 */
char *kreuzberg_dbf_metadata_to_json(const KREUZBERGDbfMetadata *ptr);

/**
 * Free a `DbfMetadata` handle.
 * # Safety
 * Pointer must have been returned by this library, or be null.
 */
void kreuzberg_dbf_metadata_free(KREUZBERGDbfMetadata *ptr);

/**
 * Get the `record_count` field from a `DbfMetadata`.
 * # Safety
 * Pointer must be a valid handle returned by this library.
 */
uintptr_t kreuzberg_dbf_metadata_record_count(const KREUZBERGDbfMetadata *ptr);

/**
 * Get the `field_count` field from a `DbfMetadata`.
 * # Safety
 * Pointer must be a valid handle returned by this library.
 */
uintptr_t kreuzberg_dbf_metadata_field_count(const KREUZBERGDbfMetadata *ptr);

/**
 * Get the `fields` field from a `DbfMetadata`.
 * # Safety
 * Pointer must be a valid handle returned by this library.
 */
char *kreuzberg_dbf_metadata_fields(const KREUZBERGDbfMetadata *ptr);

/**
 * Create a `DbfFieldInfo` from a JSON string. Returns null on failure.
 * # Safety
 * JSON string must be valid UTF-8 and null-terminated.
 * Returned handle must be freed with `kreuzberg_dbf_field_info_free`.
 */
KREUZBERGDbfFieldInfo *kreuzberg_dbf_field_info_from_json(const char *json);

/**
 * Serialize a `DbfFieldInfo` to a JSON string. Returns null on failure.
 * # Safety
 * `ptr` must be a valid, non-null pointer returned by a `kreuzberg` function.
 * The returned string must be freed with `kreuzberg_free_string`.
 */
char *kreuzberg_dbf_field_info_to_json(const KREUZBERGDbfFieldInfo *ptr);

/**
 * Free a `DbfFieldInfo` handle.
 * # Safety
 * Pointer must have been returned by this library, or be null.
 */
void kreuzberg_dbf_field_info_free(KREUZBERGDbfFieldInfo *ptr);

/**
 * Get the `name` field from a `DbfFieldInfo`.
 * # Safety
 * Pointer must be a valid handle returned by this library.
 */
char *kreuzberg_dbf_field_info_name(const KREUZBERGDbfFieldInfo *ptr);

/**
 * Get the `field_type` field from a `DbfFieldInfo`.
 * # Safety
 * Pointer must be a valid handle returned by this library.
 */
char *kreuzberg_dbf_field_info_field_type(const KREUZBERGDbfFieldInfo *ptr);

/**
 * Create a `JatsMetadata` from a JSON string. Returns null on failure.
 * # Safety
 * JSON string must be valid UTF-8 and null-terminated.
 * Returned handle must be freed with `kreuzberg_jats_metadata_free`.
 */
KREUZBERGJatsMetadata *kreuzberg_jats_metadata_from_json(const char *json);

/**
 * Serialize a `JatsMetadata` to a JSON string. Returns null on failure.
 * # Safety
 * `ptr` must be a valid, non-null pointer returned by a `kreuzberg` function.
 * The returned string must be freed with `kreuzberg_free_string`.
 */
char *kreuzberg_jats_metadata_to_json(const KREUZBERGJatsMetadata *ptr);

/**
 * Free a `JatsMetadata` handle.
 * # Safety
 * Pointer must have been returned by this library, or be null.
 */
void kreuzberg_jats_metadata_free(KREUZBERGJatsMetadata *ptr);

/**
 * Get the `copyright` field from a `JatsMetadata`.
 * # Safety
 * Pointer must be a valid handle returned by this library.
 */
char *kreuzberg_jats_metadata_copyright(const KREUZBERGJatsMetadata *ptr);

/**
 * Get the `license` field from a `JatsMetadata`.
 * # Safety
 * Pointer must be a valid handle returned by this library.
 */
char *kreuzberg_jats_metadata_license(const KREUZBERGJatsMetadata *ptr);

/**
 * Get the `history_dates` field from a `JatsMetadata`.
 * # Safety
 * Pointer must be a valid handle returned by this library.
 */
char *kreuzberg_jats_metadata_history_dates(const KREUZBERGJatsMetadata *ptr);

/**
 * Get the `contributor_roles` field from a `JatsMetadata`.
 * # Safety
 * Pointer must be a valid handle returned by this library.
 */
char *kreuzberg_jats_metadata_contributor_roles(const KREUZBERGJatsMetadata *ptr);

/**
 * Create a `ContributorRole` from a JSON string. Returns null on failure.
 * # Safety
 * JSON string must be valid UTF-8 and null-terminated.
 * Returned handle must be freed with `kreuzberg_contributor_role_free`.
 */
KREUZBERGContributorRole *kreuzberg_contributor_role_from_json(const char *json);

/**
 * Serialize a `ContributorRole` to a JSON string. Returns null on failure.
 * # Safety
 * `ptr` must be a valid, non-null pointer returned by a `kreuzberg` function.
 * The returned string must be freed with `kreuzberg_free_string`.
 */
char *kreuzberg_contributor_role_to_json(const KREUZBERGContributorRole *ptr);

/**
 * Free a `ContributorRole` handle.
 * # Safety
 * Pointer must have been returned by this library, or be null.
 */
void kreuzberg_contributor_role_free(KREUZBERGContributorRole *ptr);

/**
 * Get the `name` field from a `ContributorRole`.
 * # Safety
 * Pointer must be a valid handle returned by this library.
 */
char *kreuzberg_contributor_role_name(const KREUZBERGContributorRole *ptr);

/**
 * Get the `role` field from a `ContributorRole`.
 * # Safety
 * Pointer must be a valid handle returned by this library.
 */
char *kreuzberg_contributor_role_role(const KREUZBERGContributorRole *ptr);

/**
 * Create a `EpubMetadata` from a JSON string. Returns null on failure.
 * # Safety
 * JSON string must be valid UTF-8 and null-terminated.
 * Returned handle must be freed with `kreuzberg_epub_metadata_free`.
 */
KREUZBERGEpubMetadata *kreuzberg_epub_metadata_from_json(const char *json);

/**
 * Serialize a `EpubMetadata` to a JSON string. Returns null on failure.
 * # Safety
 * `ptr` must be a valid, non-null pointer returned by a `kreuzberg` function.
 * The returned string must be freed with `kreuzberg_free_string`.
 */
char *kreuzberg_epub_metadata_to_json(const KREUZBERGEpubMetadata *ptr);

/**
 * Free a `EpubMetadata` handle.
 * # Safety
 * Pointer must have been returned by this library, or be null.
 */
void kreuzberg_epub_metadata_free(KREUZBERGEpubMetadata *ptr);

/**
 * Get the `coverage` field from a `EpubMetadata`.
 * # Safety
 * Pointer must be a valid handle returned by this library.
 */
char *kreuzberg_epub_metadata_coverage(const KREUZBERGEpubMetadata *ptr);

/**
 * Get the `dc_format` field from a `EpubMetadata`.
 * # Safety
 * Pointer must be a valid handle returned by this library.
 */
char *kreuzberg_epub_metadata_dc_format(const KREUZBERGEpubMetadata *ptr);

/**
 * Get the `relation` field from a `EpubMetadata`.
 * # Safety
 * Pointer must be a valid handle returned by this library.
 */
char *kreuzberg_epub_metadata_relation(const KREUZBERGEpubMetadata *ptr);

/**
 * Get the `source` field from a `EpubMetadata`.
 * # Safety
 * Pointer must be a valid handle returned by this library.
 */
char *kreuzberg_epub_metadata_source(const KREUZBERGEpubMetadata *ptr);

/**
 * Get the `dc_type` field from a `EpubMetadata`.
 * # Safety
 * Pointer must be a valid handle returned by this library.
 */
char *kreuzberg_epub_metadata_dc_type(const KREUZBERGEpubMetadata *ptr);

/**
 * Get the `cover_image` field from a `EpubMetadata`.
 * # Safety
 * Pointer must be a valid handle returned by this library.
 */
char *kreuzberg_epub_metadata_cover_image(const KREUZBERGEpubMetadata *ptr);

/**
 * Create a `PstMetadata` from a JSON string. Returns null on failure.
 * # Safety
 * JSON string must be valid UTF-8 and null-terminated.
 * Returned handle must be freed with `kreuzberg_pst_metadata_free`.
 */
KREUZBERGPstMetadata *kreuzberg_pst_metadata_from_json(const char *json);

/**
 * Serialize a `PstMetadata` to a JSON string. Returns null on failure.
 * # Safety
 * `ptr` must be a valid, non-null pointer returned by a `kreuzberg` function.
 * The returned string must be freed with `kreuzberg_free_string`.
 */
char *kreuzberg_pst_metadata_to_json(const KREUZBERGPstMetadata *ptr);

/**
 * Free a `PstMetadata` handle.
 * # Safety
 * Pointer must have been returned by this library, or be null.
 */
void kreuzberg_pst_metadata_free(KREUZBERGPstMetadata *ptr);

/**
 * Get the `message_count` field from a `PstMetadata`.
 * # Safety
 * Pointer must be a valid handle returned by this library.
 */
uintptr_t kreuzberg_pst_metadata_message_count(const KREUZBERGPstMetadata *ptr);

/**
 * Create a `OcrConfidence` from a JSON string. Returns null on failure.
 * # Safety
 * JSON string must be valid UTF-8 and null-terminated.
 * Returned handle must be freed with `kreuzberg_ocr_confidence_free`.
 */
KREUZBERGOcrConfidence *kreuzberg_ocr_confidence_from_json(const char *json);

/**
 * Serialize a `OcrConfidence` to a JSON string. Returns null on failure.
 * # Safety
 * `ptr` must be a valid, non-null pointer returned by a `kreuzberg` function.
 * The returned string must be freed with `kreuzberg_free_string`.
 */
char *kreuzberg_ocr_confidence_to_json(const KREUZBERGOcrConfidence *ptr);

/**
 * Free a `OcrConfidence` handle.
 * # Safety
 * Pointer must have been returned by this library, or be null.
 */
void kreuzberg_ocr_confidence_free(KREUZBERGOcrConfidence *ptr);

/**
 * Get the `detection` field from a `OcrConfidence`.
 * # Safety
 * Pointer must be a valid handle returned by this library.
 */
double kreuzberg_ocr_confidence_detection(const KREUZBERGOcrConfidence *ptr);

/**
 * Get the `recognition` field from a `OcrConfidence`.
 * # Safety
 * Pointer must be a valid handle returned by this library.
 */
double kreuzberg_ocr_confidence_recognition(const KREUZBERGOcrConfidence *ptr);

/**
 * Create a `OcrRotation` from a JSON string. Returns null on failure.
 * # Safety
 * JSON string must be valid UTF-8 and null-terminated.
 * Returned handle must be freed with `kreuzberg_ocr_rotation_free`.
 */
KREUZBERGOcrRotation *kreuzberg_ocr_rotation_from_json(const char *json);

/**
 * Serialize a `OcrRotation` to a JSON string. Returns null on failure.
 * # Safety
 * `ptr` must be a valid, non-null pointer returned by a `kreuzberg` function.
 * The returned string must be freed with `kreuzberg_free_string`.
 */
char *kreuzberg_ocr_rotation_to_json(const KREUZBERGOcrRotation *ptr);

/**
 * Free a `OcrRotation` handle.
 * # Safety
 * Pointer must have been returned by this library, or be null.
 */
void kreuzberg_ocr_rotation_free(KREUZBERGOcrRotation *ptr);

/**
 * Get the `angle_degrees` field from a `OcrRotation`.
 * # Safety
 * Pointer must be a valid handle returned by this library.
 */
double kreuzberg_ocr_rotation_angle_degrees(const KREUZBERGOcrRotation *ptr);

/**
 * Get the `confidence` field from a `OcrRotation`.
 * # Safety
 * Pointer must be a valid handle returned by this library.
 */
double kreuzberg_ocr_rotation_confidence(const KREUZBERGOcrRotation *ptr);

/**
 * Create a `OcrElement` from a JSON string. Returns null on failure.
 * # Safety
 * JSON string must be valid UTF-8 and null-terminated.
 * Returned handle must be freed with `kreuzberg_ocr_element_free`.
 */
KREUZBERGOcrElement *kreuzberg_ocr_element_from_json(const char *json);

/**
 * Serialize a `OcrElement` to a JSON string. Returns null on failure.
 * # Safety
 * `ptr` must be a valid, non-null pointer returned by a `kreuzberg` function.
 * The returned string must be freed with `kreuzberg_free_string`.
 */
char *kreuzberg_ocr_element_to_json(const KREUZBERGOcrElement *ptr);

/**
 * Free a `OcrElement` handle.
 * # Safety
 * Pointer must have been returned by this library, or be null.
 */
void kreuzberg_ocr_element_free(KREUZBERGOcrElement *ptr);

/**
 * Get the `text` field from a `OcrElement`.
 * # Safety
 * Pointer must be a valid handle returned by this library.
 */
char *kreuzberg_ocr_element_text(const KREUZBERGOcrElement *ptr);

/**
 * Get the `geometry` field from a `OcrElement`.
 * # Safety
 * Pointer must be a valid handle returned by this library.
 */
KREUZBERGOcrBoundingGeometry *kreuzberg_ocr_element_geometry(const KREUZBERGOcrElement *ptr);

/**
 * Get the `confidence` field from a `OcrElement`.
 * # Safety
 * Pointer must be a valid handle returned by this library.
 */
KREUZBERGOcrConfidence *kreuzberg_ocr_element_confidence(const KREUZBERGOcrElement *ptr);

/**
 * Get the `level` field from a `OcrElement`.
 * # Safety
 * Pointer must be a valid handle returned by this library.
 */
KREUZBERGOcrElementLevel *kreuzberg_ocr_element_level(const KREUZBERGOcrElement *ptr);

/**
 * Get the `rotation` field from a `OcrElement`.
 * # Safety
 * Pointer must be a valid handle returned by this library.
 */
KREUZBERGOcrRotation *kreuzberg_ocr_element_rotation(const KREUZBERGOcrElement *ptr);

/**
 * Get the `page_number` field from a `OcrElement`.
 * # Safety
 * Pointer must be a valid handle returned by this library.
 */
uint32_t kreuzberg_ocr_element_page_number(const KREUZBERGOcrElement *ptr);

/**
 * Get the `parent_id` field from a `OcrElement`.
 * # Safety
 * Pointer must be a valid handle returned by this library.
 */
char *kreuzberg_ocr_element_parent_id(const KREUZBERGOcrElement *ptr);

/**
 * Get the `backend_metadata` field from a `OcrElement`.
 * # Safety
 * Pointer must be a valid handle returned by this library.
 */
char *kreuzberg_ocr_element_backend_metadata(const KREUZBERGOcrElement *ptr);

/**
 * Create a `OcrElementConfig` from a JSON string. Returns null on failure.
 * # Safety
 * JSON string must be valid UTF-8 and null-terminated.
 * Returned handle must be freed with `kreuzberg_ocr_element_config_free`.
 */
KREUZBERGOcrElementConfig *kreuzberg_ocr_element_config_from_json(const char *json);

/**
 * Serialize a `OcrElementConfig` to a JSON string. Returns null on failure.
 * # Safety
 * `ptr` must be a valid, non-null pointer returned by a `kreuzberg` function.
 * The returned string must be freed with `kreuzberg_free_string`.
 */
char *kreuzberg_ocr_element_config_to_json(const KREUZBERGOcrElementConfig *ptr);

/**
 * Free a `OcrElementConfig` handle.
 * # Safety
 * Pointer must have been returned by this library, or be null.
 */
void kreuzberg_ocr_element_config_free(KREUZBERGOcrElementConfig *ptr);

/**
 * Get the `include_elements` field from a `OcrElementConfig`.
 * # Safety
 * Pointer must be a valid handle returned by this library.
 */
int32_t kreuzberg_ocr_element_config_include_elements(const KREUZBERGOcrElementConfig *ptr);

/**
 * Get the `min_level` field from a `OcrElementConfig`.
 * # Safety
 * Pointer must be a valid handle returned by this library.
 */
KREUZBERGOcrElementLevel *kreuzberg_ocr_element_config_min_level(const KREUZBERGOcrElementConfig *ptr);

/**
 * Get the `min_confidence` field from a `OcrElementConfig`.
 * # Safety
 * Pointer must be a valid handle returned by this library.
 */
double kreuzberg_ocr_element_config_min_confidence(const KREUZBERGOcrElementConfig *ptr);

/**
 * Get the `build_hierarchy` field from a `OcrElementConfig`.
 * # Safety
 * Pointer must be a valid handle returned by this library.
 */
int32_t kreuzberg_ocr_element_config_build_hierarchy(const KREUZBERGOcrElementConfig *ptr);

/**
 * Create a `PageStructure` from a JSON string. Returns null on failure.
 * # Safety
 * JSON string must be valid UTF-8 and null-terminated.
 * Returned handle must be freed with `kreuzberg_page_structure_free`.
 */
KREUZBERGPageStructure *kreuzberg_page_structure_from_json(const char *json);

/**
 * Serialize a `PageStructure` to a JSON string. Returns null on failure.
 * # Safety
 * `ptr` must be a valid, non-null pointer returned by a `kreuzberg` function.
 * The returned string must be freed with `kreuzberg_free_string`.
 */
char *kreuzberg_page_structure_to_json(const KREUZBERGPageStructure *ptr);

/**
 * Free a `PageStructure` handle.
 * # Safety
 * Pointer must have been returned by this library, or be null.
 */
void kreuzberg_page_structure_free(KREUZBERGPageStructure *ptr);

/**
 * Get the `total_count` field from a `PageStructure`.
 * # Safety
 * Pointer must be a valid handle returned by this library.
 */
uint32_t kreuzberg_page_structure_total_count(const KREUZBERGPageStructure *ptr);

/**
 * Get the `unit_type` field from a `PageStructure`.
 * # Safety
 * Pointer must be a valid handle returned by this library.
 */
KREUZBERGPageUnitType *kreuzberg_page_structure_unit_type(const KREUZBERGPageStructure *ptr);

/**
 * Get the `boundaries` field from a `PageStructure`.
 * # Safety
 * Pointer must be a valid handle returned by this library.
 */
char *kreuzberg_page_structure_boundaries(const KREUZBERGPageStructure *ptr);

/**
 * Get the `pages` field from a `PageStructure`.
 * # Safety
 * Pointer must be a valid handle returned by this library.
 */
char *kreuzberg_page_structure_pages(const KREUZBERGPageStructure *ptr);

/**
 * Create a `PageBoundary` from a JSON string. Returns null on failure.
 * # Safety
 * JSON string must be valid UTF-8 and null-terminated.
 * Returned handle must be freed with `kreuzberg_page_boundary_free`.
 */
KREUZBERGPageBoundary *kreuzberg_page_boundary_from_json(const char *json);

/**
 * Serialize a `PageBoundary` to a JSON string. Returns null on failure.
 * # Safety
 * `ptr` must be a valid, non-null pointer returned by a `kreuzberg` function.
 * The returned string must be freed with `kreuzberg_free_string`.
 */
char *kreuzberg_page_boundary_to_json(const KREUZBERGPageBoundary *ptr);

/**
 * Free a `PageBoundary` handle.
 * # Safety
 * Pointer must have been returned by this library, or be null.
 */
void kreuzberg_page_boundary_free(KREUZBERGPageBoundary *ptr);

/**
 * Get the `byte_start` field from a `PageBoundary`.
 * # Safety
 * Pointer must be a valid handle returned by this library.
 */
uintptr_t kreuzberg_page_boundary_byte_start(const KREUZBERGPageBoundary *ptr);

/**
 * Get the `byte_end` field from a `PageBoundary`.
 * # Safety
 * Pointer must be a valid handle returned by this library.
 */
uintptr_t kreuzberg_page_boundary_byte_end(const KREUZBERGPageBoundary *ptr);

/**
 * Get the `page_number` field from a `PageBoundary`.
 * # Safety
 * Pointer must be a valid handle returned by this library.
 */
uint32_t kreuzberg_page_boundary_page_number(const KREUZBERGPageBoundary *ptr);

/**
 * Create a `PageInfo` from a JSON string. Returns null on failure.
 * # Safety
 * JSON string must be valid UTF-8 and null-terminated.
 * Returned handle must be freed with `kreuzberg_page_info_free`.
 */
KREUZBERGPageInfo *kreuzberg_page_info_from_json(const char *json);

/**
 * Serialize a `PageInfo` to a JSON string. Returns null on failure.
 * # Safety
 * `ptr` must be a valid, non-null pointer returned by a `kreuzberg` function.
 * The returned string must be freed with `kreuzberg_free_string`.
 */
char *kreuzberg_page_info_to_json(const KREUZBERGPageInfo *ptr);

/**
 * Free a `PageInfo` handle.
 * # Safety
 * Pointer must have been returned by this library, or be null.
 */
void kreuzberg_page_info_free(KREUZBERGPageInfo *ptr);

/**
 * Get the `number` field from a `PageInfo`.
 * # Safety
 * Pointer must be a valid handle returned by this library.
 */
uint32_t kreuzberg_page_info_number(const KREUZBERGPageInfo *ptr);

/**
 * Get the `title` field from a `PageInfo`.
 * # Safety
 * Pointer must be a valid handle returned by this library.
 */
char *kreuzberg_page_info_title(const KREUZBERGPageInfo *ptr);

/**
 * Get the `image_count` field from a `PageInfo`.
 * # Safety
 * Pointer must be a valid handle returned by this library.
 */
uint32_t kreuzberg_page_info_image_count(const KREUZBERGPageInfo *ptr);

/**
 * Get the `table_count` field from a `PageInfo`.
 * # Safety
 * Pointer must be a valid handle returned by this library.
 */
uint32_t kreuzberg_page_info_table_count(const KREUZBERGPageInfo *ptr);

/**
 * Get the `hidden` field from a `PageInfo`.
 * # Safety
 * Pointer must be a valid handle returned by this library.
 */
int32_t kreuzberg_page_info_hidden(const KREUZBERGPageInfo *ptr);

/**
 * Get the `is_blank` field from a `PageInfo`.
 * # Safety
 * Pointer must be a valid handle returned by this library.
 */
int32_t kreuzberg_page_info_is_blank(const KREUZBERGPageInfo *ptr);

/**
 * Get the `has_vector_graphics` field from a `PageInfo`.
 * # Safety
 * Pointer must be a valid handle returned by this library.
 */
int32_t kreuzberg_page_info_has_vector_graphics(const KREUZBERGPageInfo *ptr);

/**
 * Create a `PageContent` from a JSON string. Returns null on failure.
 * # Safety
 * JSON string must be valid UTF-8 and null-terminated.
 * Returned handle must be freed with `kreuzberg_page_content_free`.
 */
KREUZBERGPageContent *kreuzberg_page_content_from_json(const char *json);

/**
 * Serialize a `PageContent` to a JSON string. Returns null on failure.
 * # Safety
 * `ptr` must be a valid, non-null pointer returned by a `kreuzberg` function.
 * The returned string must be freed with `kreuzberg_free_string`.
 */
char *kreuzberg_page_content_to_json(const KREUZBERGPageContent *ptr);

/**
 * Free a `PageContent` handle.
 * # Safety
 * Pointer must have been returned by this library, or be null.
 */
void kreuzberg_page_content_free(KREUZBERGPageContent *ptr);

/**
 * Get the `page_number` field from a `PageContent`.
 * # Safety
 * Pointer must be a valid handle returned by this library.
 */
uint32_t kreuzberg_page_content_page_number(const KREUZBERGPageContent *ptr);

/**
 * Get the `content` field from a `PageContent`.
 * # Safety
 * Pointer must be a valid handle returned by this library.
 */
char *kreuzberg_page_content_content(const KREUZBERGPageContent *ptr);

/**
 * Get the `tables` field from a `PageContent`.
 * # Safety
 * Pointer must be a valid handle returned by this library.
 */
char *kreuzberg_page_content_tables(const KREUZBERGPageContent *ptr);

/**
 * Get the `image_indices` field from a `PageContent`.
 * # Safety
 * Pointer must be a valid handle returned by this library.
 */
char *kreuzberg_page_content_image_indices(const KREUZBERGPageContent *ptr);

/**
 * Get the `hierarchy` field from a `PageContent`.
 * # Safety
 * Pointer must be a valid handle returned by this library.
 */
KREUZBERGPageHierarchy *kreuzberg_page_content_hierarchy(const KREUZBERGPageContent *ptr);

/**
 * Get the `is_blank` field from a `PageContent`.
 * # Safety
 * Pointer must be a valid handle returned by this library.
 */
int32_t kreuzberg_page_content_is_blank(const KREUZBERGPageContent *ptr);

/**
 * Get the `layout_regions` field from a `PageContent`.
 * # Safety
 * Pointer must be a valid handle returned by this library.
 */
char *kreuzberg_page_content_layout_regions(const KREUZBERGPageContent *ptr);

/**
 * Get the `speaker_notes` field from a `PageContent`.
 * # Safety
 * Pointer must be a valid handle returned by this library.
 */
char *kreuzberg_page_content_speaker_notes(const KREUZBERGPageContent *ptr);

/**
 * Get the `section_name` field from a `PageContent`.
 * # Safety
 * Pointer must be a valid handle returned by this library.
 */
char *kreuzberg_page_content_section_name(const KREUZBERGPageContent *ptr);

/**
 * Get the `sheet_name` field from a `PageContent`.
 * # Safety
 * Pointer must be a valid handle returned by this library.
 */
char *kreuzberg_page_content_sheet_name(const KREUZBERGPageContent *ptr);

/**
 * Create a `LayoutRegion` from a JSON string. Returns null on failure.
 * # Safety
 * JSON string must be valid UTF-8 and null-terminated.
 * Returned handle must be freed with `kreuzberg_layout_region_free`.
 */
KREUZBERGLayoutRegion *kreuzberg_layout_region_from_json(const char *json);

/**
 * Serialize a `LayoutRegion` to a JSON string. Returns null on failure.
 * # Safety
 * `ptr` must be a valid, non-null pointer returned by a `kreuzberg` function.
 * The returned string must be freed with `kreuzberg_free_string`.
 */
char *kreuzberg_layout_region_to_json(const KREUZBERGLayoutRegion *ptr);

/**
 * Free a `LayoutRegion` handle.
 * # Safety
 * Pointer must have been returned by this library, or be null.
 */
void kreuzberg_layout_region_free(KREUZBERGLayoutRegion *ptr);

/**
 * Get the `class_name` field from a `LayoutRegion`.
 * # Safety
 * Pointer must be a valid handle returned by this library.
 */
char *kreuzberg_layout_region_class_name(const KREUZBERGLayoutRegion *ptr);

/**
 * Get the `confidence` field from a `LayoutRegion`.
 * # Safety
 * Pointer must be a valid handle returned by this library.
 */
double kreuzberg_layout_region_confidence(const KREUZBERGLayoutRegion *ptr);

/**
 * Get the `bounding_box` field from a `LayoutRegion`.
 * # Safety
 * Pointer must be a valid handle returned by this library.
 */
KREUZBERGBoundingBox *kreuzberg_layout_region_bounding_box(const KREUZBERGLayoutRegion *ptr);

/**
 * Get the `area_fraction` field from a `LayoutRegion`.
 * # Safety
 * Pointer must be a valid handle returned by this library.
 */
double kreuzberg_layout_region_area_fraction(const KREUZBERGLayoutRegion *ptr);

/**
 * Create a `PageHierarchy` from a JSON string. Returns null on failure.
 * # Safety
 * JSON string must be valid UTF-8 and null-terminated.
 * Returned handle must be freed with `kreuzberg_page_hierarchy_free`.
 */
KREUZBERGPageHierarchy *kreuzberg_page_hierarchy_from_json(const char *json);

/**
 * Serialize a `PageHierarchy` to a JSON string. Returns null on failure.
 * # Safety
 * `ptr` must be a valid, non-null pointer returned by a `kreuzberg` function.
 * The returned string must be freed with `kreuzberg_free_string`.
 */
char *kreuzberg_page_hierarchy_to_json(const KREUZBERGPageHierarchy *ptr);

/**
 * Free a `PageHierarchy` handle.
 * # Safety
 * Pointer must have been returned by this library, or be null.
 */
void kreuzberg_page_hierarchy_free(KREUZBERGPageHierarchy *ptr);

/**
 * Get the `block_count` field from a `PageHierarchy`.
 * # Safety
 * Pointer must be a valid handle returned by this library.
 */
uint32_t kreuzberg_page_hierarchy_block_count(const KREUZBERGPageHierarchy *ptr);

/**
 * Get the `blocks` field from a `PageHierarchy`.
 * # Safety
 * Pointer must be a valid handle returned by this library.
 */
char *kreuzberg_page_hierarchy_blocks(const KREUZBERGPageHierarchy *ptr);

/**
 * Create a `HierarchicalBlock` from a JSON string. Returns null on failure.
 * # Safety
 * JSON string must be valid UTF-8 and null-terminated.
 * Returned handle must be freed with `kreuzberg_hierarchical_block_free`.
 */
KREUZBERGHierarchicalBlock *kreuzberg_hierarchical_block_from_json(const char *json);

/**
 * Serialize a `HierarchicalBlock` to a JSON string. Returns null on failure.
 * # Safety
 * `ptr` must be a valid, non-null pointer returned by a `kreuzberg` function.
 * The returned string must be freed with `kreuzberg_free_string`.
 */
char *kreuzberg_hierarchical_block_to_json(const KREUZBERGHierarchicalBlock *ptr);

/**
 * Free a `HierarchicalBlock` handle.
 * # Safety
 * Pointer must have been returned by this library, or be null.
 */
void kreuzberg_hierarchical_block_free(KREUZBERGHierarchicalBlock *ptr);

/**
 * Get the `text` field from a `HierarchicalBlock`.
 * # Safety
 * Pointer must be a valid handle returned by this library.
 */
char *kreuzberg_hierarchical_block_text(const KREUZBERGHierarchicalBlock *ptr);

/**
 * Get the `font_size` field from a `HierarchicalBlock`.
 * # Safety
 * Pointer must be a valid handle returned by this library.
 */
float kreuzberg_hierarchical_block_font_size(const KREUZBERGHierarchicalBlock *ptr);

/**
 * Get the `level` field from a `HierarchicalBlock`.
 * # Safety
 * Pointer must be a valid handle returned by this library.
 */
char *kreuzberg_hierarchical_block_level(const KREUZBERGHierarchicalBlock *ptr);

/**
 * Create a `CellChange` from a JSON string. Returns null on failure.
 * # Safety
 * JSON string must be valid UTF-8 and null-terminated.
 * Returned handle must be freed with `kreuzberg_cell_change_free`.
 */
KREUZBERGCellChange *kreuzberg_cell_change_from_json(const char *json);

/**
 * Serialize a `CellChange` to a JSON string. Returns null on failure.
 * # Safety
 * `ptr` must be a valid, non-null pointer returned by a `kreuzberg` function.
 * The returned string must be freed with `kreuzberg_free_string`.
 */
char *kreuzberg_cell_change_to_json(const KREUZBERGCellChange *ptr);

/**
 * Free a `CellChange` handle.
 * # Safety
 * Pointer must have been returned by this library, or be null.
 */
void kreuzberg_cell_change_free(KREUZBERGCellChange *ptr);

/**
 * Get the `row` field from a `CellChange`.
 * # Safety
 * Pointer must be a valid handle returned by this library.
 */
uintptr_t kreuzberg_cell_change_row(const KREUZBERGCellChange *ptr);

/**
 * Get the `col` field from a `CellChange`.
 * # Safety
 * Pointer must be a valid handle returned by this library.
 */
uintptr_t kreuzberg_cell_change_col(const KREUZBERGCellChange *ptr);

/**
 * Get the `from` field from a `CellChange`.
 * # Safety
 * Pointer must be a valid handle returned by this library.
 */
char *kreuzberg_cell_change_from(const KREUZBERGCellChange *ptr);

/**
 * Get the `to` field from a `CellChange`.
 * # Safety
 * Pointer must be a valid handle returned by this library.
 */
char *kreuzberg_cell_change_to(const KREUZBERGCellChange *ptr);

/**
 * Create a `DocumentRevision` from a JSON string. Returns null on failure.
 * # Safety
 * JSON string must be valid UTF-8 and null-terminated.
 * Returned handle must be freed with `kreuzberg_document_revision_free`.
 */
KREUZBERGDocumentRevision *kreuzberg_document_revision_from_json(const char *json);

/**
 * Serialize a `DocumentRevision` to a JSON string. Returns null on failure.
 * # Safety
 * `ptr` must be a valid, non-null pointer returned by a `kreuzberg` function.
 * The returned string must be freed with `kreuzberg_free_string`.
 */
char *kreuzberg_document_revision_to_json(const KREUZBERGDocumentRevision *ptr);

/**
 * Free a `DocumentRevision` handle.
 * # Safety
 * Pointer must have been returned by this library, or be null.
 */
void kreuzberg_document_revision_free(KREUZBERGDocumentRevision *ptr);

/**
 * Get the `revision_id` field from a `DocumentRevision`.
 * # Safety
 * Pointer must be a valid handle returned by this library.
 */
char *kreuzberg_document_revision_revision_id(const KREUZBERGDocumentRevision *ptr);

/**
 * Get the `author` field from a `DocumentRevision`.
 * # Safety
 * Pointer must be a valid handle returned by this library.
 */
char *kreuzberg_document_revision_author(const KREUZBERGDocumentRevision *ptr);

/**
 * Get the `timestamp` field from a `DocumentRevision`.
 * # Safety
 * Pointer must be a valid handle returned by this library.
 */
char *kreuzberg_document_revision_timestamp(const KREUZBERGDocumentRevision *ptr);

/**
 * Get the `kind` field from a `DocumentRevision`.
 * # Safety
 * Pointer must be a valid handle returned by this library.
 */
KREUZBERGRevisionKind *kreuzberg_document_revision_kind(const KREUZBERGDocumentRevision *ptr);

/**
 * Get the `anchor` field from a `DocumentRevision`.
 * # Safety
 * Pointer must be a valid handle returned by this library.
 */
KREUZBERGRevisionAnchor *kreuzberg_document_revision_anchor(const KREUZBERGDocumentRevision *ptr);

/**
 * Get the `delta` field from a `DocumentRevision`.
 * # Safety
 * Pointer must be a valid handle returned by this library.
 */
KREUZBERGRevisionDelta *kreuzberg_document_revision_delta(const KREUZBERGDocumentRevision *ptr);

/**
 * Create a `RevisionDelta` from a JSON string. Returns null on failure.
 * # Safety
 * JSON string must be valid UTF-8 and null-terminated.
 * Returned handle must be freed with `kreuzberg_revision_delta_free`.
 */
KREUZBERGRevisionDelta *kreuzberg_revision_delta_from_json(const char *json);

/**
 * Serialize a `RevisionDelta` to a JSON string. Returns null on failure.
 * # Safety
 * `ptr` must be a valid, non-null pointer returned by a `kreuzberg` function.
 * The returned string must be freed with `kreuzberg_free_string`.
 */
char *kreuzberg_revision_delta_to_json(const KREUZBERGRevisionDelta *ptr);

/**
 * Free a `RevisionDelta` handle.
 * # Safety
 * Pointer must have been returned by this library, or be null.
 */
void kreuzberg_revision_delta_free(KREUZBERGRevisionDelta *ptr);

/**
 * Get the `content` field from a `RevisionDelta`.
 * # Safety
 * Pointer must be a valid handle returned by this library.
 */
char *kreuzberg_revision_delta_content(const KREUZBERGRevisionDelta *ptr);

/**
 * Get the `table_changes` field from a `RevisionDelta`.
 * # Safety
 * Pointer must be a valid handle returned by this library.
 */
char *kreuzberg_revision_delta_table_changes(const KREUZBERGRevisionDelta *ptr);

/**
 * Create a `Table` from a JSON string. Returns null on failure.
 * # Safety
 * JSON string must be valid UTF-8 and null-terminated.
 * Returned handle must be freed with `kreuzberg_table_free`.
 */
KREUZBERGTable *kreuzberg_table_from_json(const char *json);

/**
 * Serialize a `Table` to a JSON string. Returns null on failure.
 * # Safety
 * `ptr` must be a valid, non-null pointer returned by a `kreuzberg` function.
 * The returned string must be freed with `kreuzberg_free_string`.
 */
char *kreuzberg_table_to_json(const KREUZBERGTable *ptr);

/**
 * Free a `Table` handle.
 * # Safety
 * Pointer must have been returned by this library, or be null.
 */
void kreuzberg_table_free(KREUZBERGTable *ptr);

/**
 * Get the `cells` field from a `Table`.
 * # Safety
 * Pointer must be a valid handle returned by this library.
 */
char *kreuzberg_table_cells(const KREUZBERGTable *ptr);

/**
 * Get the `markdown` field from a `Table`.
 * # Safety
 * Pointer must be a valid handle returned by this library.
 */
char *kreuzberg_table_markdown(const KREUZBERGTable *ptr);

/**
 * Get the `page_number` field from a `Table`.
 * # Safety
 * Pointer must be a valid handle returned by this library.
 */
uint32_t kreuzberg_table_page_number(const KREUZBERGTable *ptr);

/**
 * Get the `bounding_box` field from a `Table`.
 * # Safety
 * Pointer must be a valid handle returned by this library.
 */
KREUZBERGBoundingBox *kreuzberg_table_bounding_box(const KREUZBERGTable *ptr);

/**
 * Create a `TableCell` from a JSON string. Returns null on failure.
 * # Safety
 * JSON string must be valid UTF-8 and null-terminated.
 * Returned handle must be freed with `kreuzberg_table_cell_free`.
 */
KREUZBERGTableCell *kreuzberg_table_cell_from_json(const char *json);

/**
 * Serialize a `TableCell` to a JSON string. Returns null on failure.
 * # Safety
 * `ptr` must be a valid, non-null pointer returned by a `kreuzberg` function.
 * The returned string must be freed with `kreuzberg_free_string`.
 */
char *kreuzberg_table_cell_to_json(const KREUZBERGTableCell *ptr);

/**
 * Free a `TableCell` handle.
 * # Safety
 * Pointer must have been returned by this library, or be null.
 */
void kreuzberg_table_cell_free(KREUZBERGTableCell *ptr);

/**
 * Get the `content` field from a `TableCell`.
 * # Safety
 * Pointer must be a valid handle returned by this library.
 */
char *kreuzberg_table_cell_content(const KREUZBERGTableCell *ptr);

/**
 * Get the `row_span` field from a `TableCell`.
 * # Safety
 * Pointer must be a valid handle returned by this library.
 */
uint32_t kreuzberg_table_cell_row_span(const KREUZBERGTableCell *ptr);

/**
 * Get the `col_span` field from a `TableCell`.
 * # Safety
 * Pointer must be a valid handle returned by this library.
 */
uint32_t kreuzberg_table_cell_col_span(const KREUZBERGTableCell *ptr);

/**
 * Get the `is_header` field from a `TableCell`.
 * # Safety
 * Pointer must be a valid handle returned by this library.
 */
int32_t kreuzberg_table_cell_is_header(const KREUZBERGTableCell *ptr);

/**
 * Create a `ExtractedUri` from a JSON string. Returns null on failure.
 * # Safety
 * JSON string must be valid UTF-8 and null-terminated.
 * Returned handle must be freed with `kreuzberg_extracted_uri_free`.
 */
KREUZBERGExtractedUri *kreuzberg_extracted_uri_from_json(const char *json);

/**
 * Serialize a `ExtractedUri` to a JSON string. Returns null on failure.
 * # Safety
 * `ptr` must be a valid, non-null pointer returned by a `kreuzberg` function.
 * The returned string must be freed with `kreuzberg_free_string`.
 */
char *kreuzberg_extracted_uri_to_json(const KREUZBERGExtractedUri *ptr);

/**
 * Free a `ExtractedUri` handle.
 * # Safety
 * Pointer must have been returned by this library, or be null.
 */
void kreuzberg_extracted_uri_free(KREUZBERGExtractedUri *ptr);

/**
 * Get the `url` field from a `ExtractedUri`.
 * # Safety
 * Pointer must be a valid handle returned by this library.
 */
char *kreuzberg_extracted_uri_url(const KREUZBERGExtractedUri *ptr);

/**
 * Get the `label` field from a `ExtractedUri`.
 * # Safety
 * Pointer must be a valid handle returned by this library.
 */
char *kreuzberg_extracted_uri_label(const KREUZBERGExtractedUri *ptr);

/**
 * Get the `page` field from a `ExtractedUri`.
 * # Safety
 * Pointer must be a valid handle returned by this library.
 */
uint32_t kreuzberg_extracted_uri_page(const KREUZBERGExtractedUri *ptr);

/**
 * Get the `kind` field from a `ExtractedUri`.
 * # Safety
 * Pointer must be a valid handle returned by this library.
 */
KREUZBERGUriKind *kreuzberg_extracted_uri_kind(const KREUZBERGExtractedUri *ptr);

/**
 * Create a `DetectResponse` from a JSON string. Returns null on failure.
 * # Safety
 * JSON string must be valid UTF-8 and null-terminated.
 * Returned handle must be freed with `kreuzberg_detect_response_free`.
 */
KREUZBERGDetectResponse *kreuzberg_detect_response_from_json(const char *json);

/**
 * Serialize a `DetectResponse` to a JSON string. Returns null on failure.
 * # Safety
 * `ptr` must be a valid, non-null pointer returned by a `kreuzberg` function.
 * The returned string must be freed with `kreuzberg_free_string`.
 */
char *kreuzberg_detect_response_to_json(const KREUZBERGDetectResponse *ptr);

/**
 * Free a `DetectResponse` handle.
 * # Safety
 * Pointer must have been returned by this library, or be null.
 */
void kreuzberg_detect_response_free(KREUZBERGDetectResponse *ptr);

/**
 * Get the `mime_type` field from a `DetectResponse`.
 * # Safety
 * Pointer must be a valid handle returned by this library.
 */
char *kreuzberg_detect_response_mime_type(const KREUZBERGDetectResponse *ptr);

/**
 * Get the `filename` field from a `DetectResponse`.
 * # Safety
 * Pointer must be a valid handle returned by this library.
 */
char *kreuzberg_detect_response_filename(const KREUZBERGDetectResponse *ptr);

/**
 * Create a `DiffOptions` from a JSON string. Returns null on failure.
 * # Safety
 * JSON string must be valid UTF-8 and null-terminated.
 * Returned handle must be freed with `kreuzberg_diff_options_free`.
 */
KREUZBERGDiffOptions *kreuzberg_diff_options_from_json(const char *json);

/**
 * Serialize a `DiffOptions` to a JSON string. Returns null on failure.
 * # Safety
 * `ptr` must be a valid, non-null pointer returned by a `kreuzberg` function.
 * The returned string must be freed with `kreuzberg_free_string`.
 */
char *kreuzberg_diff_options_to_json(const KREUZBERGDiffOptions *ptr);

/**
 * Free a `DiffOptions` handle.
 * # Safety
 * Pointer must have been returned by this library, or be null.
 */
void kreuzberg_diff_options_free(KREUZBERGDiffOptions *ptr);

/**
 * Get the `include_metadata` field from a `DiffOptions`.
 * # Safety
 * Pointer must be a valid handle returned by this library.
 */
int32_t kreuzberg_diff_options_include_metadata(const KREUZBERGDiffOptions *ptr);

/**
 * Get the `include_embedded` field from a `DiffOptions`.
 * # Safety
 * Pointer must be a valid handle returned by this library.
 */
int32_t kreuzberg_diff_options_include_embedded(const KREUZBERGDiffOptions *ptr);

/**
 * Get the `max_content_chars` field from a `DiffOptions`.
 * # Safety
 * Pointer must be a valid handle returned by this library.
 */
uintptr_t kreuzberg_diff_options_max_content_chars(const KREUZBERGDiffOptions *ptr);

/**
 * \note SAFETY: Caller must ensure all pointer arguments are valid or null. Returned pointers must be
 * freed with the appropriate free function.
 */
KREUZBERGDiffOptions *kreuzberg_diff_options_default(void);

/**
 * Create a `ExtractionDiff` from a JSON string. Returns null on failure.
 * # Safety
 * JSON string must be valid UTF-8 and null-terminated.
 * Returned handle must be freed with `kreuzberg_extraction_diff_free`.
 */
KREUZBERGExtractionDiff *kreuzberg_extraction_diff_from_json(const char *json);

/**
 * Serialize a `ExtractionDiff` to a JSON string. Returns null on failure.
 * # Safety
 * `ptr` must be a valid, non-null pointer returned by a `kreuzberg` function.
 * The returned string must be freed with `kreuzberg_free_string`.
 */
char *kreuzberg_extraction_diff_to_json(const KREUZBERGExtractionDiff *ptr);

/**
 * Free a `ExtractionDiff` handle.
 * # Safety
 * Pointer must have been returned by this library, or be null.
 */
void kreuzberg_extraction_diff_free(KREUZBERGExtractionDiff *ptr);

/**
 * Get the `content_diff` field from a `ExtractionDiff`.
 * # Safety
 * Pointer must be a valid handle returned by this library.
 */
char *kreuzberg_extraction_diff_content_diff(const KREUZBERGExtractionDiff *ptr);

/**
 * Get the `tables_added` field from a `ExtractionDiff`.
 * # Safety
 * Pointer must be a valid handle returned by this library.
 */
char *kreuzberg_extraction_diff_tables_added(const KREUZBERGExtractionDiff *ptr);

/**
 * Get the `tables_removed` field from a `ExtractionDiff`.
 * # Safety
 * Pointer must be a valid handle returned by this library.
 */
char *kreuzberg_extraction_diff_tables_removed(const KREUZBERGExtractionDiff *ptr);

/**
 * Get the `tables_changed` field from a `ExtractionDiff`.
 * # Safety
 * Pointer must be a valid handle returned by this library.
 */
char *kreuzberg_extraction_diff_tables_changed(const KREUZBERGExtractionDiff *ptr);

/**
 * Get the `metadata_changed` field from a `ExtractionDiff`.
 * # Safety
 * Pointer must be a valid handle returned by this library.
 */
char *kreuzberg_extraction_diff_metadata_changed(const KREUZBERGExtractionDiff *ptr);

/**
 * Get the `embedded_changes` field from a `ExtractionDiff`.
 * # Safety
 * Pointer must be a valid handle returned by this library.
 */
KREUZBERGEmbeddedChanges *kreuzberg_extraction_diff_embedded_changes(const KREUZBERGExtractionDiff *ptr);

/**
 * Create a `DiffHunk` from a JSON string. Returns null on failure.
 * # Safety
 * JSON string must be valid UTF-8 and null-terminated.
 * Returned handle must be freed with `kreuzberg_diff_hunk_free`.
 */
KREUZBERGDiffHunk *kreuzberg_diff_hunk_from_json(const char *json);

/**
 * Serialize a `DiffHunk` to a JSON string. Returns null on failure.
 * # Safety
 * `ptr` must be a valid, non-null pointer returned by a `kreuzberg` function.
 * The returned string must be freed with `kreuzberg_free_string`.
 */
char *kreuzberg_diff_hunk_to_json(const KREUZBERGDiffHunk *ptr);

/**
 * Free a `DiffHunk` handle.
 * # Safety
 * Pointer must have been returned by this library, or be null.
 */
void kreuzberg_diff_hunk_free(KREUZBERGDiffHunk *ptr);

/**
 * Get the `from_line` field from a `DiffHunk`.
 * # Safety
 * Pointer must be a valid handle returned by this library.
 */
uintptr_t kreuzberg_diff_hunk_from_line(const KREUZBERGDiffHunk *ptr);

/**
 * Get the `from_count` field from a `DiffHunk`.
 * # Safety
 * Pointer must be a valid handle returned by this library.
 */
uintptr_t kreuzberg_diff_hunk_from_count(const KREUZBERGDiffHunk *ptr);

/**
 * Get the `to_line` field from a `DiffHunk`.
 * # Safety
 * Pointer must be a valid handle returned by this library.
 */
uintptr_t kreuzberg_diff_hunk_to_line(const KREUZBERGDiffHunk *ptr);

/**
 * Get the `to_count` field from a `DiffHunk`.
 * # Safety
 * Pointer must be a valid handle returned by this library.
 */
uintptr_t kreuzberg_diff_hunk_to_count(const KREUZBERGDiffHunk *ptr);

/**
 * Get the `lines` field from a `DiffHunk`.
 * # Safety
 * Pointer must be a valid handle returned by this library.
 */
char *kreuzberg_diff_hunk_lines(const KREUZBERGDiffHunk *ptr);

/**
 * Create a `TableDiff` from a JSON string. Returns null on failure.
 * # Safety
 * JSON string must be valid UTF-8 and null-terminated.
 * Returned handle must be freed with `kreuzberg_table_diff_free`.
 */
KREUZBERGTableDiff *kreuzberg_table_diff_from_json(const char *json);

/**
 * Serialize a `TableDiff` to a JSON string. Returns null on failure.
 * # Safety
 * `ptr` must be a valid, non-null pointer returned by a `kreuzberg` function.
 * The returned string must be freed with `kreuzberg_free_string`.
 */
char *kreuzberg_table_diff_to_json(const KREUZBERGTableDiff *ptr);

/**
 * Free a `TableDiff` handle.
 * # Safety
 * Pointer must have been returned by this library, or be null.
 */
void kreuzberg_table_diff_free(KREUZBERGTableDiff *ptr);

/**
 * Get the `from_index` field from a `TableDiff`.
 * # Safety
 * Pointer must be a valid handle returned by this library.
 */
uintptr_t kreuzberg_table_diff_from_index(const KREUZBERGTableDiff *ptr);

/**
 * Get the `to_index` field from a `TableDiff`.
 * # Safety
 * Pointer must be a valid handle returned by this library.
 */
uintptr_t kreuzberg_table_diff_to_index(const KREUZBERGTableDiff *ptr);

/**
 * Get the `cell_changes` field from a `TableDiff`.
 * # Safety
 * Pointer must be a valid handle returned by this library.
 */
char *kreuzberg_table_diff_cell_changes(const KREUZBERGTableDiff *ptr);

/**
 * Create a `EmbeddedChanges` from a JSON string. Returns null on failure.
 * # Safety
 * JSON string must be valid UTF-8 and null-terminated.
 * Returned handle must be freed with `kreuzberg_embedded_changes_free`.
 */
KREUZBERGEmbeddedChanges *kreuzberg_embedded_changes_from_json(const char *json);

/**
 * Serialize a `EmbeddedChanges` to a JSON string. Returns null on failure.
 * # Safety
 * `ptr` must be a valid, non-null pointer returned by a `kreuzberg` function.
 * The returned string must be freed with `kreuzberg_free_string`.
 */
char *kreuzberg_embedded_changes_to_json(const KREUZBERGEmbeddedChanges *ptr);

/**
 * Free a `EmbeddedChanges` handle.
 * # Safety
 * Pointer must have been returned by this library, or be null.
 */
void kreuzberg_embedded_changes_free(KREUZBERGEmbeddedChanges *ptr);

/**
 * Get the `added` field from a `EmbeddedChanges`.
 * # Safety
 * Pointer must be a valid handle returned by this library.
 */
char *kreuzberg_embedded_changes_added(const KREUZBERGEmbeddedChanges *ptr);

/**
 * Get the `removed` field from a `EmbeddedChanges`.
 * # Safety
 * Pointer must be a valid handle returned by this library.
 */
char *kreuzberg_embedded_changes_removed(const KREUZBERGEmbeddedChanges *ptr);

/**
 * Get the `changed` field from a `EmbeddedChanges`.
 * # Safety
 * Pointer must be a valid handle returned by this library.
 */
char *kreuzberg_embedded_changes_changed(const KREUZBERGEmbeddedChanges *ptr);

/**
 * Create a `EmbeddedDiff` from a JSON string. Returns null on failure.
 * # Safety
 * JSON string must be valid UTF-8 and null-terminated.
 * Returned handle must be freed with `kreuzberg_embedded_diff_free`.
 */
KREUZBERGEmbeddedDiff *kreuzberg_embedded_diff_from_json(const char *json);

/**
 * Serialize a `EmbeddedDiff` to a JSON string. Returns null on failure.
 * # Safety
 * `ptr` must be a valid, non-null pointer returned by a `kreuzberg` function.
 * The returned string must be freed with `kreuzberg_free_string`.
 */
char *kreuzberg_embedded_diff_to_json(const KREUZBERGEmbeddedDiff *ptr);

/**
 * Free a `EmbeddedDiff` handle.
 * # Safety
 * Pointer must have been returned by this library, or be null.
 */
void kreuzberg_embedded_diff_free(KREUZBERGEmbeddedDiff *ptr);

/**
 * Get the `path` field from a `EmbeddedDiff`.
 * # Safety
 * Pointer must be a valid handle returned by this library.
 */
char *kreuzberg_embedded_diff_path(const KREUZBERGEmbeddedDiff *ptr);

/**
 * Get the `diff` field from a `EmbeddedDiff`.
 * # Safety
 * Pointer must be a valid handle returned by this library.
 */
KREUZBERGExtractionDiff *kreuzberg_embedded_diff_diff(const KREUZBERGEmbeddedDiff *ptr);

/**
 * Create a `EmbeddingPreset` from a JSON string. Returns null on failure.
 * # Safety
 * JSON string must be valid UTF-8 and null-terminated.
 * Returned handle must be freed with `kreuzberg_embedding_preset_free`.
 */
KREUZBERGEmbeddingPreset *kreuzberg_embedding_preset_from_json(const char *json);

/**
 * Serialize a `EmbeddingPreset` to a JSON string. Returns null on failure.
 * # Safety
 * `ptr` must be a valid, non-null pointer returned by a `kreuzberg` function.
 * The returned string must be freed with `kreuzberg_free_string`.
 */
char *kreuzberg_embedding_preset_to_json(const KREUZBERGEmbeddingPreset *ptr);

/**
 * Free a `EmbeddingPreset` handle.
 * # Safety
 * Pointer must have been returned by this library, or be null.
 */
void kreuzberg_embedding_preset_free(KREUZBERGEmbeddingPreset *ptr);

/**
 * Get the `name` field from a `EmbeddingPreset`.
 * # Safety
 * Pointer must be a valid handle returned by this library.
 */
char *kreuzberg_embedding_preset_name(const KREUZBERGEmbeddingPreset *ptr);

/**
 * Get the `chunk_size` field from a `EmbeddingPreset`.
 * # Safety
 * Pointer must be a valid handle returned by this library.
 */
uintptr_t kreuzberg_embedding_preset_chunk_size(const KREUZBERGEmbeddingPreset *ptr);

/**
 * Get the `overlap` field from a `EmbeddingPreset`.
 * # Safety
 * Pointer must be a valid handle returned by this library.
 */
uintptr_t kreuzberg_embedding_preset_overlap(const KREUZBERGEmbeddingPreset *ptr);

/**
 * Get the `model_repo` field from a `EmbeddingPreset`.
 * # Safety
 * Pointer must be a valid handle returned by this library.
 */
char *kreuzberg_embedding_preset_model_repo(const KREUZBERGEmbeddingPreset *ptr);

/**
 * Get the `pooling` field from a `EmbeddingPreset`.
 * # Safety
 * Pointer must be a valid handle returned by this library.
 */
char *kreuzberg_embedding_preset_pooling(const KREUZBERGEmbeddingPreset *ptr);

/**
 * Get the `model_file` field from a `EmbeddingPreset`.
 * # Safety
 * Pointer must be a valid handle returned by this library.
 */
char *kreuzberg_embedding_preset_model_file(const KREUZBERGEmbeddingPreset *ptr);

/**
 * Get the `dimensions` field from a `EmbeddingPreset`.
 * # Safety
 * Pointer must be a valid handle returned by this library.
 */
uintptr_t kreuzberg_embedding_preset_dimensions(const KREUZBERGEmbeddingPreset *ptr);

/**
 * Get the `description` field from a `EmbeddingPreset`.
 * # Safety
 * Pointer must be a valid handle returned by this library.
 */
char *kreuzberg_embedding_preset_description(const KREUZBERGEmbeddingPreset *ptr);

/**
 * Create a `YakeParams` from a JSON string. Returns null on failure.
 * # Safety
 * JSON string must be valid UTF-8 and null-terminated.
 * Returned handle must be freed with `kreuzberg_yake_params_free`.
 */
KREUZBERGYakeParams *kreuzberg_yake_params_from_json(const char *json);

/**
 * Serialize a `YakeParams` to a JSON string. Returns null on failure.
 * # Safety
 * `ptr` must be a valid, non-null pointer returned by a `kreuzberg` function.
 * The returned string must be freed with `kreuzberg_free_string`.
 */
char *kreuzberg_yake_params_to_json(const KREUZBERGYakeParams *ptr);

/**
 * Free a `YakeParams` handle.
 * # Safety
 * Pointer must have been returned by this library, or be null.
 */
void kreuzberg_yake_params_free(KREUZBERGYakeParams *ptr);

/**
 * Get the `window_size` field from a `YakeParams`.
 * # Safety
 * Pointer must be a valid handle returned by this library.
 */
uintptr_t kreuzberg_yake_params_window_size(const KREUZBERGYakeParams *ptr);

/**
 * \note SAFETY: Caller must ensure all pointer arguments are valid or null. Returned pointers must be
 * freed with the appropriate free function.
 */
KREUZBERGYakeParams *kreuzberg_yake_params_default(void);

/**
 * Create a `RakeParams` from a JSON string. Returns null on failure.
 * # Safety
 * JSON string must be valid UTF-8 and null-terminated.
 * Returned handle must be freed with `kreuzberg_rake_params_free`.
 */
KREUZBERGRakeParams *kreuzberg_rake_params_from_json(const char *json);

/**
 * Serialize a `RakeParams` to a JSON string. Returns null on failure.
 * # Safety
 * `ptr` must be a valid, non-null pointer returned by a `kreuzberg` function.
 * The returned string must be freed with `kreuzberg_free_string`.
 */
char *kreuzberg_rake_params_to_json(const KREUZBERGRakeParams *ptr);

/**
 * Free a `RakeParams` handle.
 * # Safety
 * Pointer must have been returned by this library, or be null.
 */
void kreuzberg_rake_params_free(KREUZBERGRakeParams *ptr);

/**
 * Get the `min_word_length` field from a `RakeParams`.
 * # Safety
 * Pointer must be a valid handle returned by this library.
 */
uintptr_t kreuzberg_rake_params_min_word_length(const KREUZBERGRakeParams *ptr);

/**
 * Get the `max_words_per_phrase` field from a `RakeParams`.
 * # Safety
 * Pointer must be a valid handle returned by this library.
 */
uintptr_t kreuzberg_rake_params_max_words_per_phrase(const KREUZBERGRakeParams *ptr);

/**
 * \note SAFETY: Caller must ensure all pointer arguments are valid or null. Returned pointers must be
 * freed with the appropriate free function.
 */
KREUZBERGRakeParams *kreuzberg_rake_params_default(void);

/**
 * Create a `KeywordConfig` from a JSON string. Returns null on failure.
 * # Safety
 * JSON string must be valid UTF-8 and null-terminated.
 * Returned handle must be freed with `kreuzberg_keyword_config_free`.
 */
KREUZBERGKeywordConfig *kreuzberg_keyword_config_from_json(const char *json);

/**
 * Serialize a `KeywordConfig` to a JSON string. Returns null on failure.
 * # Safety
 * `ptr` must be a valid, non-null pointer returned by a `kreuzberg` function.
 * The returned string must be freed with `kreuzberg_free_string`.
 */
char *kreuzberg_keyword_config_to_json(const KREUZBERGKeywordConfig *ptr);

/**
 * Free a `KeywordConfig` handle.
 * # Safety
 * Pointer must have been returned by this library, or be null.
 */
void kreuzberg_keyword_config_free(KREUZBERGKeywordConfig *ptr);

/**
 * Get the `algorithm` field from a `KeywordConfig`.
 * # Safety
 * Pointer must be a valid handle returned by this library.
 */
KREUZBERGKeywordAlgorithm *kreuzberg_keyword_config_algorithm(const KREUZBERGKeywordConfig *ptr);

/**
 * Get the `max_keywords` field from a `KeywordConfig`.
 * # Safety
 * Pointer must be a valid handle returned by this library.
 */
uintptr_t kreuzberg_keyword_config_max_keywords(const KREUZBERGKeywordConfig *ptr);

/**
 * Get the `min_score` field from a `KeywordConfig`.
 * # Safety
 * Pointer must be a valid handle returned by this library.
 */
float kreuzberg_keyword_config_min_score(const KREUZBERGKeywordConfig *ptr);

/**
 * Get the `language` field from a `KeywordConfig`.
 * # Safety
 * Pointer must be a valid handle returned by this library.
 */
char *kreuzberg_keyword_config_language(const KREUZBERGKeywordConfig *ptr);

/**
 * Get the `yake_params` field from a `KeywordConfig`.
 * # Safety
 * Pointer must be a valid handle returned by this library.
 */
KREUZBERGYakeParams *kreuzberg_keyword_config_yake_params(const KREUZBERGKeywordConfig *ptr);

/**
 * Get the `rake_params` field from a `KeywordConfig`.
 * # Safety
 * Pointer must be a valid handle returned by this library.
 */
KREUZBERGRakeParams *kreuzberg_keyword_config_rake_params(const KREUZBERGKeywordConfig *ptr);

/**
 * \note SAFETY: Caller must ensure all pointer arguments are valid or null. Returned pointers must be
 * freed with the appropriate free function.
 */
KREUZBERGKeywordConfig *kreuzberg_keyword_config_default(void);

/**
 * Create a `Keyword` from a JSON string. Returns null on failure.
 * # Safety
 * JSON string must be valid UTF-8 and null-terminated.
 * Returned handle must be freed with `kreuzberg_keyword_free`.
 */
KREUZBERGKeyword *kreuzberg_keyword_from_json(const char *json);

/**
 * Serialize a `Keyword` to a JSON string. Returns null on failure.
 * # Safety
 * `ptr` must be a valid, non-null pointer returned by a `kreuzberg` function.
 * The returned string must be freed with `kreuzberg_free_string`.
 */
char *kreuzberg_keyword_to_json(const KREUZBERGKeyword *ptr);

/**
 * Free a `Keyword` handle.
 * # Safety
 * Pointer must have been returned by this library, or be null.
 */
void kreuzberg_keyword_free(KREUZBERGKeyword *ptr);

/**
 * Get the `text` field from a `Keyword`.
 * # Safety
 * Pointer must be a valid handle returned by this library.
 */
char *kreuzberg_keyword_text(const KREUZBERGKeyword *ptr);

/**
 * Get the `score` field from a `Keyword`.
 * # Safety
 * Pointer must be a valid handle returned by this library.
 */
float kreuzberg_keyword_score(const KREUZBERGKeyword *ptr);

/**
 * Get the `algorithm` field from a `Keyword`.
 * # Safety
 * Pointer must be a valid handle returned by this library.
 */
KREUZBERGKeywordAlgorithm *kreuzberg_keyword_algorithm(const KREUZBERGKeyword *ptr);

/**
 * Get the `positions` field from a `Keyword`.
 * # Safety
 * Pointer must be a valid handle returned by this library.
 */
char *kreuzberg_keyword_positions(const KREUZBERGKeyword *ptr);

/**
 * Create a `PaddleOcrConfig` from a JSON string. Returns null on failure.
 * # Safety
 * JSON string must be valid UTF-8 and null-terminated.
 * Returned handle must be freed with `kreuzberg_paddle_ocr_config_free`.
 */
KREUZBERGPaddleOcrConfig *kreuzberg_paddle_ocr_config_from_json(const char *json);

/**
 * Serialize a `PaddleOcrConfig` to a JSON string. Returns null on failure.
 * # Safety
 * `ptr` must be a valid, non-null pointer returned by a `kreuzberg` function.
 * The returned string must be freed with `kreuzberg_free_string`.
 */
char *kreuzberg_paddle_ocr_config_to_json(const KREUZBERGPaddleOcrConfig *ptr);

/**
 * Free a `PaddleOcrConfig` handle.
 * # Safety
 * Pointer must have been returned by this library, or be null.
 */
void kreuzberg_paddle_ocr_config_free(KREUZBERGPaddleOcrConfig *ptr);

/**
 * Get the `language` field from a `PaddleOcrConfig`.
 * # Safety
 * Pointer must be a valid handle returned by this library.
 */
char *kreuzberg_paddle_ocr_config_language(const KREUZBERGPaddleOcrConfig *ptr);

/**
 * Get the `cache_dir` field from a `PaddleOcrConfig`.
 * # Safety
 * Pointer must be a valid handle returned by this library.
 */
char *kreuzberg_paddle_ocr_config_cache_dir(const KREUZBERGPaddleOcrConfig *ptr);

/**
 * Get the `use_angle_cls` field from a `PaddleOcrConfig`.
 * # Safety
 * Pointer must be a valid handle returned by this library.
 */
int32_t kreuzberg_paddle_ocr_config_use_angle_cls(const KREUZBERGPaddleOcrConfig *ptr);

/**
 * Get the `enable_table_detection` field from a `PaddleOcrConfig`.
 * # Safety
 * Pointer must be a valid handle returned by this library.
 */
int32_t kreuzberg_paddle_ocr_config_enable_table_detection(const KREUZBERGPaddleOcrConfig *ptr);

/**
 * Get the `det_db_thresh` field from a `PaddleOcrConfig`.
 * # Safety
 * Pointer must be a valid handle returned by this library.
 */
float kreuzberg_paddle_ocr_config_det_db_thresh(const KREUZBERGPaddleOcrConfig *ptr);

/**
 * Get the `det_db_box_thresh` field from a `PaddleOcrConfig`.
 * # Safety
 * Pointer must be a valid handle returned by this library.
 */
float kreuzberg_paddle_ocr_config_det_db_box_thresh(const KREUZBERGPaddleOcrConfig *ptr);

/**
 * Get the `det_db_unclip_ratio` field from a `PaddleOcrConfig`.
 * # Safety
 * Pointer must be a valid handle returned by this library.
 */
float kreuzberg_paddle_ocr_config_det_db_unclip_ratio(const KREUZBERGPaddleOcrConfig *ptr);

/**
 * Get the `det_limit_side_len` field from a `PaddleOcrConfig`.
 * # Safety
 * Pointer must be a valid handle returned by this library.
 */
uint32_t kreuzberg_paddle_ocr_config_det_limit_side_len(const KREUZBERGPaddleOcrConfig *ptr);

/**
 * Get the `rec_batch_num` field from a `PaddleOcrConfig`.
 * # Safety
 * Pointer must be a valid handle returned by this library.
 */
uint32_t kreuzberg_paddle_ocr_config_rec_batch_num(const KREUZBERGPaddleOcrConfig *ptr);

/**
 * Get the `padding` field from a `PaddleOcrConfig`.
 * # Safety
 * Pointer must be a valid handle returned by this library.
 */
uint32_t kreuzberg_paddle_ocr_config_padding(const KREUZBERGPaddleOcrConfig *ptr);

/**
 * Get the `drop_score` field from a `PaddleOcrConfig`.
 * # Safety
 * Pointer must be a valid handle returned by this library.
 */
float kreuzberg_paddle_ocr_config_drop_score(const KREUZBERGPaddleOcrConfig *ptr);

/**
 * Get the `model_tier` field from a `PaddleOcrConfig`.
 * # Safety
 * Pointer must be a valid handle returned by this library.
 */
char *kreuzberg_paddle_ocr_config_model_tier(const KREUZBERGPaddleOcrConfig *ptr);

/**
 * Sets a custom cache directory for model files.
 * \param path Path to cache directory
 * \note SAFETY: Caller must ensure all pointer arguments are valid or null. Returned pointers must be
 * freed with the appropriate free function.
 * \code
 * use kreuzberg::PaddleOcrConfig;
 * use std::path::PathBuf;
 *
 * let config = PaddleOcrConfig::new("en")
 *     .with_cache_dir(PathBuf::from("/tmp/paddle-cache"));
 * \endcode
 */
KREUZBERGPaddleOcrConfig *kreuzberg_paddle_ocr_config_with_cache_dir(KREUZBERGPaddleOcrConfig *this_,
                                                                     const char *path);

/**
 * Enables or disables table structure detection.
 * \param enable Whether to enable table detection
 * \note SAFETY: Caller must ensure all pointer arguments are valid or null. Returned pointers must be
 * freed with the appropriate free function.
 * \code
 * use kreuzberg::PaddleOcrConfig;
 *
 * let config = PaddleOcrConfig::new("en")
 *     .with_table_detection(true);
 * \endcode
 */
KREUZBERGPaddleOcrConfig *kreuzberg_paddle_ocr_config_with_table_detection(KREUZBERGPaddleOcrConfig *this_,
                                                                           int32_t enable);

/**
 * Enables or disables angle classification for rotated text.
 * \param enable Whether to enable angle classification
 * \note SAFETY: Caller must ensure all pointer arguments are valid or null. Returned pointers must be
 * freed with the appropriate free function.
 */
KREUZBERGPaddleOcrConfig *kreuzberg_paddle_ocr_config_with_angle_cls(KREUZBERGPaddleOcrConfig *this_,
                                                                     int32_t enable);

/**
 * Sets the database threshold for text detection.
 * \param threshold Detection threshold (0.0-1.0)
 * \note SAFETY: Caller must ensure all pointer arguments are valid or null. Returned pointers must be
 * freed with the appropriate free function.
 */
KREUZBERGPaddleOcrConfig *kreuzberg_paddle_ocr_config_with_det_db_thresh(KREUZBERGPaddleOcrConfig *this_,
                                                                         float threshold);

/**
 * Sets the box threshold for text bounding box refinement.
 * \param threshold Box threshold (0.0-1.0)
 * \note SAFETY: Caller must ensure all pointer arguments are valid or null. Returned pointers must be
 * freed with the appropriate free function.
 */
KREUZBERGPaddleOcrConfig *kreuzberg_paddle_ocr_config_with_det_db_box_thresh(KREUZBERGPaddleOcrConfig *this_,
                                                                             float threshold);

/**
 * Sets the unclip ratio for expanding text bounding boxes.
 * \param ratio Unclip ratio (typically 1.5-2.0)
 * \note SAFETY: Caller must ensure all pointer arguments are valid or null. Returned pointers must be
 * freed with the appropriate free function.
 */
KREUZBERGPaddleOcrConfig *kreuzberg_paddle_ocr_config_with_det_db_unclip_ratio(KREUZBERGPaddleOcrConfig *this_,
                                                                               float ratio);

/**
 * Sets the maximum side length for detection images.
 * \param length Maximum side length in pixels
 * \note SAFETY: Caller must ensure all pointer arguments are valid or null. Returned pointers must be
 * freed with the appropriate free function.
 */
KREUZBERGPaddleOcrConfig *kreuzberg_paddle_ocr_config_with_det_limit_side_len(KREUZBERGPaddleOcrConfig *this_,
                                                                              uint32_t length);

/**
 * Sets the batch size for recognition inference.
 * \param batch_size Number of text regions to process simultaneously
 * \note SAFETY: Caller must ensure all pointer arguments are valid or null. Returned pointers must be
 * freed with the appropriate free function.
 */
KREUZBERGPaddleOcrConfig *kreuzberg_paddle_ocr_config_with_rec_batch_num(KREUZBERGPaddleOcrConfig *this_,
                                                                         uint32_t batch_size);

/**
 * Sets the minimum recognition confidence threshold.
 * \param score Minimum confidence (0.0-1.0), text below this is dropped
 * \note SAFETY: Caller must ensure all pointer arguments are valid or null. Returned pointers must be
 * freed with the appropriate free function.
 */
KREUZBERGPaddleOcrConfig *kreuzberg_paddle_ocr_config_with_drop_score(KREUZBERGPaddleOcrConfig *this_,
                                                                      float score);

/**
 * Sets padding in pixels added around images before detection.
 * \param padding Padding in pixels (0-100)
 * \note SAFETY: Caller must ensure all pointer arguments are valid or null. Returned pointers must be
 * freed with the appropriate free function.
 */
KREUZBERGPaddleOcrConfig *kreuzberg_paddle_ocr_config_with_padding(KREUZBERGPaddleOcrConfig *this_,
                                                                   uint32_t padding);

/**
 * Sets the model tier controlling detection/recognition model size.
 * \param tier `"mobile"` (default, lightweight, faster) or `"server"` (high accuracy, GPU/complex
 * documents)
 * \note SAFETY: Caller must ensure all pointer arguments are valid or null. Returned pointers must be
 * freed with the appropriate free function.
 */
KREUZBERGPaddleOcrConfig *kreuzberg_paddle_ocr_config_with_model_tier(KREUZBERGPaddleOcrConfig *this_,
                                                                      const char *tier);

/**
 * Creates a default configuration with English language support.
 * \note SAFETY: Caller must ensure all pointer arguments are valid or null. Returned pointers must be
 * freed with the appropriate free function.
 */
KREUZBERGPaddleOcrConfig *kreuzberg_paddle_ocr_config_default(void);

/**
 * Create a `ModelPaths` from a JSON string. Returns null on failure.
 * # Safety
 * JSON string must be valid UTF-8 and null-terminated.
 * Returned handle must be freed with `kreuzberg_model_paths_free`.
 */
KREUZBERGModelPaths *kreuzberg_model_paths_from_json(const char *json);

/**
 * Serialize a `ModelPaths` to a JSON string. Returns null on failure.
 * # Safety
 * `ptr` must be a valid, non-null pointer returned by a `kreuzberg` function.
 * The returned string must be freed with `kreuzberg_free_string`.
 */
char *kreuzberg_model_paths_to_json(const KREUZBERGModelPaths *ptr);

/**
 * Free a `ModelPaths` handle.
 * # Safety
 * Pointer must have been returned by this library, or be null.
 */
void kreuzberg_model_paths_free(KREUZBERGModelPaths *ptr);

/**
 * Get the `det_model` field from a `ModelPaths`.
 * # Safety
 * Pointer must be a valid handle returned by this library.
 */
char *kreuzberg_model_paths_det_model(const KREUZBERGModelPaths *ptr);

/**
 * Get the `cls_model` field from a `ModelPaths`.
 * # Safety
 * Pointer must be a valid handle returned by this library.
 */
char *kreuzberg_model_paths_cls_model(const KREUZBERGModelPaths *ptr);

/**
 * Get the `rec_model` field from a `ModelPaths`.
 * # Safety
 * Pointer must be a valid handle returned by this library.
 */
char *kreuzberg_model_paths_rec_model(const KREUZBERGModelPaths *ptr);

/**
 * Get the `dict_file` field from a `ModelPaths`.
 * # Safety
 * Pointer must be a valid handle returned by this library.
 */
char *kreuzberg_model_paths_dict_file(const KREUZBERGModelPaths *ptr);

/**
 * Create a `OrientationResult` from a JSON string. Returns null on failure.
 * # Safety
 * JSON string must be valid UTF-8 and null-terminated.
 * Returned handle must be freed with `kreuzberg_orientation_result_free`.
 */
KREUZBERGOrientationResult *kreuzberg_orientation_result_from_json(const char *json);

/**
 * Serialize a `OrientationResult` to a JSON string. Returns null on failure.
 * # Safety
 * `ptr` must be a valid, non-null pointer returned by a `kreuzberg` function.
 * The returned string must be freed with `kreuzberg_free_string`.
 */
char *kreuzberg_orientation_result_to_json(const KREUZBERGOrientationResult *ptr);

/**
 * Free a `OrientationResult` handle.
 * # Safety
 * Pointer must have been returned by this library, or be null.
 */
void kreuzberg_orientation_result_free(KREUZBERGOrientationResult *ptr);

/**
 * Get the `degrees` field from a `OrientationResult`.
 * # Safety
 * Pointer must be a valid handle returned by this library.
 */
uint32_t kreuzberg_orientation_result_degrees(const KREUZBERGOrientationResult *ptr);

/**
 * Get the `confidence` field from a `OrientationResult`.
 * # Safety
 * Pointer must be a valid handle returned by this library.
 */
float kreuzberg_orientation_result_confidence(const KREUZBERGOrientationResult *ptr);

/**
 * Create a `BBox` from a JSON string. Returns null on failure.
 * # Safety
 * JSON string must be valid UTF-8 and null-terminated.
 * Returned handle must be freed with `kreuzberg_b_box_free`.
 */
KREUZBERGBBox *kreuzberg_b_box_from_json(const char *json);

/**
 * Serialize a `BBox` to a JSON string. Returns null on failure.
 * # Safety
 * `ptr` must be a valid, non-null pointer returned by a `kreuzberg` function.
 * The returned string must be freed with `kreuzberg_free_string`.
 */
char *kreuzberg_b_box_to_json(const KREUZBERGBBox *ptr);

/**
 * Free a `BBox` handle.
 * # Safety
 * Pointer must have been returned by this library, or be null.
 */
void kreuzberg_b_box_free(KREUZBERGBBox *ptr);

/**
 * Get the `x1` field from a `BBox`.
 * # Safety
 * Pointer must be a valid handle returned by this library.
 */
float kreuzberg_b_box_x1(const KREUZBERGBBox *ptr);

/**
 * Get the `y1` field from a `BBox`.
 * # Safety
 * Pointer must be a valid handle returned by this library.
 */
float kreuzberg_b_box_y1(const KREUZBERGBBox *ptr);

/**
 * Get the `x2` field from a `BBox`.
 * # Safety
 * Pointer must be a valid handle returned by this library.
 */
float kreuzberg_b_box_x2(const KREUZBERGBBox *ptr);

/**
 * Get the `y2` field from a `BBox`.
 * # Safety
 * Pointer must be a valid handle returned by this library.
 */
float kreuzberg_b_box_y2(const KREUZBERGBBox *ptr);

/**
 * Create a `LayoutDetection` from a JSON string. Returns null on failure.
 * # Safety
 * JSON string must be valid UTF-8 and null-terminated.
 * Returned handle must be freed with `kreuzberg_layout_detection_free`.
 */
KREUZBERGLayoutDetection *kreuzberg_layout_detection_from_json(const char *json);

/**
 * Serialize a `LayoutDetection` to a JSON string. Returns null on failure.
 * # Safety
 * `ptr` must be a valid, non-null pointer returned by a `kreuzberg` function.
 * The returned string must be freed with `kreuzberg_free_string`.
 */
char *kreuzberg_layout_detection_to_json(const KREUZBERGLayoutDetection *ptr);

/**
 * Free a `LayoutDetection` handle.
 * # Safety
 * Pointer must have been returned by this library, or be null.
 */
void kreuzberg_layout_detection_free(KREUZBERGLayoutDetection *ptr);

/**
 * Get the `class_name` field from a `LayoutDetection`.
 * # Safety
 * Pointer must be a valid handle returned by this library.
 */
KREUZBERGLayoutClass *kreuzberg_layout_detection_class_name(const KREUZBERGLayoutDetection *ptr);

/**
 * Get the `confidence` field from a `LayoutDetection`.
 * # Safety
 * Pointer must be a valid handle returned by this library.
 */
float kreuzberg_layout_detection_confidence(const KREUZBERGLayoutDetection *ptr);

/**
 * Get the `bbox` field from a `LayoutDetection`.
 * # Safety
 * Pointer must be a valid handle returned by this library.
 */
KREUZBERGBBox *kreuzberg_layout_detection_bbox(const KREUZBERGLayoutDetection *ptr);

/**
 * Create a `RecognizedTable` from a JSON string. Returns null on failure.
 * # Safety
 * JSON string must be valid UTF-8 and null-terminated.
 * Returned handle must be freed with `kreuzberg_recognized_table_free`.
 */
KREUZBERGRecognizedTable *kreuzberg_recognized_table_from_json(const char *json);

/**
 * Serialize a `RecognizedTable` to a JSON string. Returns null on failure.
 * # Safety
 * `ptr` must be a valid, non-null pointer returned by a `kreuzberg` function.
 * The returned string must be freed with `kreuzberg_free_string`.
 */
char *kreuzberg_recognized_table_to_json(const KREUZBERGRecognizedTable *ptr);

/**
 * Free a `RecognizedTable` handle.
 * # Safety
 * Pointer must have been returned by this library, or be null.
 */
void kreuzberg_recognized_table_free(KREUZBERGRecognizedTable *ptr);

/**
 * Get the `detection_bbox` field from a `RecognizedTable`.
 * # Safety
 * Pointer must be a valid handle returned by this library.
 */
KREUZBERGBBox *kreuzberg_recognized_table_detection_bbox(const KREUZBERGRecognizedTable *ptr);

/**
 * Get the `cells` field from a `RecognizedTable`.
 * # Safety
 * Pointer must be a valid handle returned by this library.
 */
char *kreuzberg_recognized_table_cells(const KREUZBERGRecognizedTable *ptr);

/**
 * Get the `markdown` field from a `RecognizedTable`.
 * # Safety
 * Pointer must be a valid handle returned by this library.
 */
char *kreuzberg_recognized_table_markdown(const KREUZBERGRecognizedTable *ptr);

/**
 * Create a `DetectionResult` from a JSON string. Returns null on failure.
 * # Safety
 * JSON string must be valid UTF-8 and null-terminated.
 * Returned handle must be freed with `kreuzberg_detection_result_free`.
 */
KREUZBERGDetectionResult *kreuzberg_detection_result_from_json(const char *json);

/**
 * Serialize a `DetectionResult` to a JSON string. Returns null on failure.
 * # Safety
 * `ptr` must be a valid, non-null pointer returned by a `kreuzberg` function.
 * The returned string must be freed with `kreuzberg_free_string`.
 */
char *kreuzberg_detection_result_to_json(const KREUZBERGDetectionResult *ptr);

/**
 * Free a `DetectionResult` handle.
 * # Safety
 * Pointer must have been returned by this library, or be null.
 */
void kreuzberg_detection_result_free(KREUZBERGDetectionResult *ptr);

/**
 * Get the `page_width` field from a `DetectionResult`.
 * # Safety
 * Pointer must be a valid handle returned by this library.
 */
uint32_t kreuzberg_detection_result_page_width(const KREUZBERGDetectionResult *ptr);

/**
 * Get the `page_height` field from a `DetectionResult`.
 * # Safety
 * Pointer must be a valid handle returned by this library.
 */
uint32_t kreuzberg_detection_result_page_height(const KREUZBERGDetectionResult *ptr);

/**
 * Get the `detections` field from a `DetectionResult`.
 * # Safety
 * Pointer must be a valid handle returned by this library.
 */
char *kreuzberg_detection_result_detections(const KREUZBERGDetectionResult *ptr);

/**
 * Create a `EmbeddedFile` from a JSON string. Returns null on failure.
 * # Safety
 * JSON string must be valid UTF-8 and null-terminated.
 * Returned handle must be freed with `kreuzberg_embedded_file_free`.
 */
KREUZBERGEmbeddedFile *kreuzberg_embedded_file_from_json(const char *json);

/**
 * Serialize a `EmbeddedFile` to a JSON string. Returns null on failure.
 * # Safety
 * `ptr` must be a valid, non-null pointer returned by a `kreuzberg` function.
 * The returned string must be freed with `kreuzberg_free_string`.
 */
char *kreuzberg_embedded_file_to_json(const KREUZBERGEmbeddedFile *ptr);

/**
 * Free a `EmbeddedFile` handle.
 * # Safety
 * Pointer must have been returned by this library, or be null.
 */
void kreuzberg_embedded_file_free(KREUZBERGEmbeddedFile *ptr);

/**
 * Get the `name` field from a `EmbeddedFile`.
 * # Safety
 * Pointer must be a valid handle returned by this library.
 */
char *kreuzberg_embedded_file_name(const KREUZBERGEmbeddedFile *ptr);

/**
 * Get the `data` field from a `EmbeddedFile`.
 * # Safety
 * Pointer must be a valid handle returned by this library.
 */
uint8_t *kreuzberg_embedded_file_data(const KREUZBERGEmbeddedFile *ptr,
                                      uintptr_t *out_len);

/**
 * Get the `compressed_size` field from a `EmbeddedFile`.
 * # Safety
 * Pointer must be a valid handle returned by this library.
 */
uintptr_t kreuzberg_embedded_file_compressed_size(const KREUZBERGEmbeddedFile *ptr);

/**
 * Get the `mime_type` field from a `EmbeddedFile`.
 * # Safety
 * Pointer must be a valid handle returned by this library.
 */
char *kreuzberg_embedded_file_mime_type(const KREUZBERGEmbeddedFile *ptr);

/**
 * Create a `PdfMetadata` from a JSON string. Returns null on failure.
 * # Safety
 * JSON string must be valid UTF-8 and null-terminated.
 * Returned handle must be freed with `kreuzberg_pdf_metadata_free`.
 */
KREUZBERGPdfMetadata *kreuzberg_pdf_metadata_from_json(const char *json);

/**
 * Serialize a `PdfMetadata` to a JSON string. Returns null on failure.
 * # Safety
 * `ptr` must be a valid, non-null pointer returned by a `kreuzberg` function.
 * The returned string must be freed with `kreuzberg_free_string`.
 */
char *kreuzberg_pdf_metadata_to_json(const KREUZBERGPdfMetadata *ptr);

/**
 * Free a `PdfMetadata` handle.
 * # Safety
 * Pointer must have been returned by this library, or be null.
 */
void kreuzberg_pdf_metadata_free(KREUZBERGPdfMetadata *ptr);

/**
 * Get the `pdf_version` field from a `PdfMetadata`.
 * # Safety
 * Pointer must be a valid handle returned by this library.
 */
char *kreuzberg_pdf_metadata_pdf_version(const KREUZBERGPdfMetadata *ptr);

/**
 * Get the `producer` field from a `PdfMetadata`.
 * # Safety
 * Pointer must be a valid handle returned by this library.
 */
char *kreuzberg_pdf_metadata_producer(const KREUZBERGPdfMetadata *ptr);

/**
 * Get the `is_encrypted` field from a `PdfMetadata`.
 * # Safety
 * Pointer must be a valid handle returned by this library.
 */
int32_t kreuzberg_pdf_metadata_is_encrypted(const KREUZBERGPdfMetadata *ptr);

/**
 * Get the `width` field from a `PdfMetadata`.
 * # Safety
 * Pointer must be a valid handle returned by this library.
 */
int64_t kreuzberg_pdf_metadata_width(const KREUZBERGPdfMetadata *ptr);

/**
 * Get the `height` field from a `PdfMetadata`.
 * # Safety
 * Pointer must be a valid handle returned by this library.
 */
int64_t kreuzberg_pdf_metadata_height(const KREUZBERGPdfMetadata *ptr);

/**
 * Get the `page_count` field from a `PdfMetadata`.
 * # Safety
 * Pointer must be a valid handle returned by this library.
 */
uint32_t kreuzberg_pdf_metadata_page_count(const KREUZBERGPdfMetadata *ptr);

/**
 * Convert an integer to a `ExecutionProviderType` variant. Returns -1 on invalid input.
 * # Safety
 * Caller must ensure all pointer arguments are valid or null.
 * Returned pointers must be freed with the appropriate free function.
 */
int32_t kreuzberg_execution_provider_type_from_i32(int32_t value);

/**
 * Convert a `ExecutionProviderType` variant name (C string) to its integer value. Returns -1 on invalid input.
 * # Safety
 * Caller must ensure `ptr` is a valid pointer to a `c_char` or null.
 */
int32_t kreuzberg_execution_provider_type_from_str(const char *name);

/**
 * Convert an integer to a `OutputFormat` variant. Returns -1 on invalid input.
 * # Safety
 * Caller must ensure all pointer arguments are valid or null.
 * Returned pointers must be freed with the appropriate free function.
 */
int32_t kreuzberg_output_format_from_i32(int32_t value);

/**
 * Convert a `OutputFormat` variant name (C string) to its integer value. Returns -1 on invalid input.
 * # Safety
 * Caller must ensure `ptr` is a valid pointer to a `c_char` or null.
 */
int32_t kreuzberg_output_format_from_str(const char *name);

/**
 * Convert an integer to a `HtmlTheme` variant. Returns -1 on invalid input.
 * # Safety
 * Caller must ensure all pointer arguments are valid or null.
 * Returned pointers must be freed with the appropriate free function.
 */
int32_t kreuzberg_html_theme_from_i32(int32_t value);

/**
 * Convert a `HtmlTheme` variant name (C string) to its integer value. Returns -1 on invalid input.
 * # Safety
 * Caller must ensure `ptr` is a valid pointer to a `c_char` or null.
 */
int32_t kreuzberg_html_theme_from_str(const char *name);

/**
 * Convert an integer to a `TableModel` variant. Returns -1 on invalid input.
 * # Safety
 * Caller must ensure all pointer arguments are valid or null.
 * Returned pointers must be freed with the appropriate free function.
 */
int32_t kreuzberg_table_model_from_i32(int32_t value);

/**
 * Convert a `TableModel` variant name (C string) to its integer value. Returns -1 on invalid input.
 * # Safety
 * Caller must ensure `ptr` is a valid pointer to a `c_char` or null.
 */
int32_t kreuzberg_table_model_from_str(const char *name);

/**
 * Convert an integer to a `ChunkerType` variant. Returns -1 on invalid input.
 * # Safety
 * Caller must ensure all pointer arguments are valid or null.
 * Returned pointers must be freed with the appropriate free function.
 */
int32_t kreuzberg_chunker_type_from_i32(int32_t value);

/**
 * Convert a `ChunkerType` variant name (C string) to its integer value. Returns -1 on invalid input.
 * # Safety
 * Caller must ensure `ptr` is a valid pointer to a `c_char` or null.
 */
int32_t kreuzberg_chunker_type_from_str(const char *name);

/**
 * Convert an integer to a `ChunkSizing` variant. Returns -1 on invalid input.
 * # Safety
 * Caller must ensure all pointer arguments are valid or null.
 * Returned pointers must be freed with the appropriate free function.
 */
int32_t kreuzberg_chunk_sizing_from_i32(int32_t value);

/**
 * Convert a `ChunkSizing` variant name (C string) to its integer value. Returns -1 on invalid input.
 * # Safety
 * Caller must ensure `ptr` is a valid pointer to a `c_char` or null.
 */
int32_t kreuzberg_chunk_sizing_from_str(const char *name);

/**
 * Convert an integer to a `EmbeddingModelType` variant. Returns -1 on invalid input.
 * # Safety
 * Caller must ensure all pointer arguments are valid or null.
 * Returned pointers must be freed with the appropriate free function.
 */
int32_t kreuzberg_embedding_model_type_from_i32(int32_t value);

/**
 * Convert a `EmbeddingModelType` variant name (C string) to its integer value. Returns -1 on invalid input.
 * # Safety
 * Caller must ensure `ptr` is a valid pointer to a `c_char` or null.
 */
int32_t kreuzberg_embedding_model_type_from_str(const char *name);

/**
 * Convert an integer to a `CodeContentMode` variant. Returns -1 on invalid input.
 * # Safety
 * Caller must ensure all pointer arguments are valid or null.
 * Returned pointers must be freed with the appropriate free function.
 */
int32_t kreuzberg_code_content_mode_from_i32(int32_t value);

/**
 * Convert a `CodeContentMode` variant name (C string) to its integer value. Returns -1 on invalid input.
 * # Safety
 * Caller must ensure `ptr` is a valid pointer to a `c_char` or null.
 */
int32_t kreuzberg_code_content_mode_from_str(const char *name);

/**
 * Convert an integer to a `ListType` variant. Returns -1 on invalid input.
 * # Safety
 * Caller must ensure all pointer arguments are valid or null.
 * Returned pointers must be freed with the appropriate free function.
 */
int32_t kreuzberg_list_type_from_i32(int32_t value);

/**
 * Convert a `ListType` variant name (C string) to its integer value. Returns -1 on invalid input.
 * # Safety
 * Caller must ensure `ptr` is a valid pointer to a `c_char` or null.
 */
int32_t kreuzberg_list_type_from_str(const char *name);

/**
 * Convert an integer to a `OcrBackendType` variant. Returns -1 on invalid input.
 * # Safety
 * Caller must ensure all pointer arguments are valid or null.
 * Returned pointers must be freed with the appropriate free function.
 */
int32_t kreuzberg_ocr_backend_type_from_i32(int32_t value);

/**
 * Convert a `OcrBackendType` variant name (C string) to its integer value. Returns -1 on invalid input.
 * # Safety
 * Caller must ensure `ptr` is a valid pointer to a `c_char` or null.
 */
int32_t kreuzberg_ocr_backend_type_from_str(const char *name);

/**
 * Convert an integer to a `ProcessingStage` variant. Returns -1 on invalid input.
 * # Safety
 * Caller must ensure all pointer arguments are valid or null.
 * Returned pointers must be freed with the appropriate free function.
 */
int32_t kreuzberg_processing_stage_from_i32(int32_t value);

/**
 * Convert a `ProcessingStage` variant name (C string) to its integer value. Returns -1 on invalid input.
 * # Safety
 * Caller must ensure `ptr` is a valid pointer to a `c_char` or null.
 */
int32_t kreuzberg_processing_stage_from_str(const char *name);

/**
 * Convert an integer to a `ReductionLevel` variant. Returns -1 on invalid input.
 * # Safety
 * Caller must ensure all pointer arguments are valid or null.
 * Returned pointers must be freed with the appropriate free function.
 */
int32_t kreuzberg_reduction_level_from_i32(int32_t value);

/**
 * Convert a `ReductionLevel` variant name (C string) to its integer value. Returns -1 on invalid input.
 * # Safety
 * Caller must ensure `ptr` is a valid pointer to a `c_char` or null.
 */
int32_t kreuzberg_reduction_level_from_str(const char *name);

/**
 * Convert an integer to a `PdfAnnotationType` variant. Returns -1 on invalid input.
 * # Safety
 * Caller must ensure all pointer arguments are valid or null.
 * Returned pointers must be freed with the appropriate free function.
 */
int32_t kreuzberg_pdf_annotation_type_from_i32(int32_t value);

/**
 * Convert a `PdfAnnotationType` variant name (C string) to its integer value. Returns -1 on invalid input.
 * # Safety
 * Caller must ensure `ptr` is a valid pointer to a `c_char` or null.
 */
int32_t kreuzberg_pdf_annotation_type_from_str(const char *name);

/**
 * Convert an integer to a `BlockType` variant. Returns -1 on invalid input.
 * # Safety
 * Caller must ensure all pointer arguments are valid or null.
 * Returned pointers must be freed with the appropriate free function.
 */
int32_t kreuzberg_block_type_from_i32(int32_t value);

/**
 * Convert a `BlockType` variant name (C string) to its integer value. Returns -1 on invalid input.
 * # Safety
 * Caller must ensure `ptr` is a valid pointer to a `c_char` or null.
 */
int32_t kreuzberg_block_type_from_str(const char *name);

/**
 * Convert an integer to a `InlineType` variant. Returns -1 on invalid input.
 * # Safety
 * Caller must ensure all pointer arguments are valid or null.
 * Returned pointers must be freed with the appropriate free function.
 */
int32_t kreuzberg_inline_type_from_i32(int32_t value);

/**
 * Convert a `InlineType` variant name (C string) to its integer value. Returns -1 on invalid input.
 * # Safety
 * Caller must ensure `ptr` is a valid pointer to a `c_char` or null.
 */
int32_t kreuzberg_inline_type_from_str(const char *name);

/**
 * Convert an integer to a `RelationshipKind` variant. Returns -1 on invalid input.
 * # Safety
 * Caller must ensure all pointer arguments are valid or null.
 * Returned pointers must be freed with the appropriate free function.
 */
int32_t kreuzberg_relationship_kind_from_i32(int32_t value);

/**
 * Convert a `RelationshipKind` variant name (C string) to its integer value. Returns -1 on invalid input.
 * # Safety
 * Caller must ensure `ptr` is a valid pointer to a `c_char` or null.
 */
int32_t kreuzberg_relationship_kind_from_str(const char *name);

/**
 * Convert an integer to a `ContentLayer` variant. Returns -1 on invalid input.
 * # Safety
 * Caller must ensure all pointer arguments are valid or null.
 * Returned pointers must be freed with the appropriate free function.
 */
int32_t kreuzberg_content_layer_from_i32(int32_t value);

/**
 * Convert a `ContentLayer` variant name (C string) to its integer value. Returns -1 on invalid input.
 * # Safety
 * Caller must ensure `ptr` is a valid pointer to a `c_char` or null.
 */
int32_t kreuzberg_content_layer_from_str(const char *name);

/**
 * Convert an integer to a `NodeContent` variant. Returns -1 on invalid input.
 * # Safety
 * Caller must ensure all pointer arguments are valid or null.
 * Returned pointers must be freed with the appropriate free function.
 */
int32_t kreuzberg_node_content_from_i32(int32_t value);

/**
 * Convert a `NodeContent` variant name (C string) to its integer value. Returns -1 on invalid input.
 * # Safety
 * Caller must ensure `ptr` is a valid pointer to a `c_char` or null.
 */
int32_t kreuzberg_node_content_from_str(const char *name);

/**
 * Convert an integer to a `AnnotationKind` variant. Returns -1 on invalid input.
 * # Safety
 * Caller must ensure all pointer arguments are valid or null.
 * Returned pointers must be freed with the appropriate free function.
 */
int32_t kreuzberg_annotation_kind_from_i32(int32_t value);

/**
 * Convert a `AnnotationKind` variant name (C string) to its integer value. Returns -1 on invalid input.
 * # Safety
 * Caller must ensure `ptr` is a valid pointer to a `c_char` or null.
 */
int32_t kreuzberg_annotation_kind_from_str(const char *name);

/**
 * Convert an integer to a `ExtractionMethod` variant. Returns -1 on invalid input.
 * # Safety
 * Caller must ensure all pointer arguments are valid or null.
 * Returned pointers must be freed with the appropriate free function.
 */
int32_t kreuzberg_extraction_method_from_i32(int32_t value);

/**
 * Convert a `ExtractionMethod` variant name (C string) to its integer value. Returns -1 on invalid input.
 * # Safety
 * Caller must ensure `ptr` is a valid pointer to a `c_char` or null.
 */
int32_t kreuzberg_extraction_method_from_str(const char *name);

/**
 * Convert an integer to a `ChunkType` variant. Returns -1 on invalid input.
 * # Safety
 * Caller must ensure all pointer arguments are valid or null.
 * Returned pointers must be freed with the appropriate free function.
 */
int32_t kreuzberg_chunk_type_from_i32(int32_t value);

/**
 * Convert a `ChunkType` variant name (C string) to its integer value. Returns -1 on invalid input.
 * # Safety
 * Caller must ensure `ptr` is a valid pointer to a `c_char` or null.
 */
int32_t kreuzberg_chunk_type_from_str(const char *name);

/**
 * Convert an integer to a `ImageKind` variant. Returns -1 on invalid input.
 * # Safety
 * Caller must ensure all pointer arguments are valid or null.
 * Returned pointers must be freed with the appropriate free function.
 */
int32_t kreuzberg_image_kind_from_i32(int32_t value);

/**
 * Convert a `ImageKind` variant name (C string) to its integer value. Returns -1 on invalid input.
 * # Safety
 * Caller must ensure `ptr` is a valid pointer to a `c_char` or null.
 */
int32_t kreuzberg_image_kind_from_str(const char *name);

/**
 * Convert an integer to a `ResultFormat` variant. Returns -1 on invalid input.
 * # Safety
 * Caller must ensure all pointer arguments are valid or null.
 * Returned pointers must be freed with the appropriate free function.
 */
int32_t kreuzberg_result_format_from_i32(int32_t value);

/**
 * Convert a `ResultFormat` variant name (C string) to its integer value. Returns -1 on invalid input.
 * # Safety
 * Caller must ensure `ptr` is a valid pointer to a `c_char` or null.
 */
int32_t kreuzberg_result_format_from_str(const char *name);

/**
 * Convert an integer to a `ElementType` variant. Returns -1 on invalid input.
 * # Safety
 * Caller must ensure all pointer arguments are valid or null.
 * Returned pointers must be freed with the appropriate free function.
 */
int32_t kreuzberg_element_type_from_i32(int32_t value);

/**
 * Convert a `ElementType` variant name (C string) to its integer value. Returns -1 on invalid input.
 * # Safety
 * Caller must ensure `ptr` is a valid pointer to a `c_char` or null.
 */
int32_t kreuzberg_element_type_from_str(const char *name);

/**
 * Convert an integer to a `FormatMetadata` variant. Returns -1 on invalid input.
 * # Safety
 * Caller must ensure all pointer arguments are valid or null.
 * Returned pointers must be freed with the appropriate free function.
 */
int32_t kreuzberg_format_metadata_from_i32(int32_t value);

/**
 * Convert a `FormatMetadata` variant name (C string) to its integer value. Returns -1 on invalid input.
 * # Safety
 * Caller must ensure `ptr` is a valid pointer to a `c_char` or null.
 */
int32_t kreuzberg_format_metadata_from_str(const char *name);

/**
 * Convert an integer to a `TextDirection` variant. Returns -1 on invalid input.
 * # Safety
 * Caller must ensure all pointer arguments are valid or null.
 * Returned pointers must be freed with the appropriate free function.
 */
int32_t kreuzberg_text_direction_from_i32(int32_t value);

/**
 * Convert a `TextDirection` variant name (C string) to its integer value. Returns -1 on invalid input.
 * # Safety
 * Caller must ensure `ptr` is a valid pointer to a `c_char` or null.
 */
int32_t kreuzberg_text_direction_from_str(const char *name);

/**
 * Convert an integer to a `LinkType` variant. Returns -1 on invalid input.
 * # Safety
 * Caller must ensure all pointer arguments are valid or null.
 * Returned pointers must be freed with the appropriate free function.
 */
int32_t kreuzberg_link_type_from_i32(int32_t value);

/**
 * Convert a `LinkType` variant name (C string) to its integer value. Returns -1 on invalid input.
 * # Safety
 * Caller must ensure `ptr` is a valid pointer to a `c_char` or null.
 */
int32_t kreuzberg_link_type_from_str(const char *name);

/**
 * Convert an integer to a `ImageType` variant. Returns -1 on invalid input.
 * # Safety
 * Caller must ensure all pointer arguments are valid or null.
 * Returned pointers must be freed with the appropriate free function.
 */
int32_t kreuzberg_image_type_from_i32(int32_t value);

/**
 * Convert a `ImageType` variant name (C string) to its integer value. Returns -1 on invalid input.
 * # Safety
 * Caller must ensure `ptr` is a valid pointer to a `c_char` or null.
 */
int32_t kreuzberg_image_type_from_str(const char *name);

/**
 * Convert an integer to a `StructuredDataType` variant. Returns -1 on invalid input.
 * # Safety
 * Caller must ensure all pointer arguments are valid or null.
 * Returned pointers must be freed with the appropriate free function.
 */
int32_t kreuzberg_structured_data_type_from_i32(int32_t value);

/**
 * Convert a `StructuredDataType` variant name (C string) to its integer value. Returns -1 on invalid input.
 * # Safety
 * Caller must ensure `ptr` is a valid pointer to a `c_char` or null.
 */
int32_t kreuzberg_structured_data_type_from_str(const char *name);

/**
 * Convert an integer to a `OcrBoundingGeometry` variant. Returns -1 on invalid input.
 * # Safety
 * Caller must ensure all pointer arguments are valid or null.
 * Returned pointers must be freed with the appropriate free function.
 */
int32_t kreuzberg_ocr_bounding_geometry_from_i32(int32_t value);

/**
 * Convert a `OcrBoundingGeometry` variant name (C string) to its integer value. Returns -1 on invalid input.
 * # Safety
 * Caller must ensure `ptr` is a valid pointer to a `c_char` or null.
 */
int32_t kreuzberg_ocr_bounding_geometry_from_str(const char *name);

/**
 * Convert an integer to a `OcrElementLevel` variant. Returns -1 on invalid input.
 * # Safety
 * Caller must ensure all pointer arguments are valid or null.
 * Returned pointers must be freed with the appropriate free function.
 */
int32_t kreuzberg_ocr_element_level_from_i32(int32_t value);

/**
 * Convert a `OcrElementLevel` variant name (C string) to its integer value. Returns -1 on invalid input.
 * # Safety
 * Caller must ensure `ptr` is a valid pointer to a `c_char` or null.
 */
int32_t kreuzberg_ocr_element_level_from_str(const char *name);

/**
 * Convert an integer to a `PageUnitType` variant. Returns -1 on invalid input.
 * # Safety
 * Caller must ensure all pointer arguments are valid or null.
 * Returned pointers must be freed with the appropriate free function.
 */
int32_t kreuzberg_page_unit_type_from_i32(int32_t value);

/**
 * Convert a `PageUnitType` variant name (C string) to its integer value. Returns -1 on invalid input.
 * # Safety
 * Caller must ensure `ptr` is a valid pointer to a `c_char` or null.
 */
int32_t kreuzberg_page_unit_type_from_str(const char *name);

/**
 * Convert an integer to a `DiffLine` variant. Returns -1 on invalid input.
 * # Safety
 * Caller must ensure all pointer arguments are valid or null.
 * Returned pointers must be freed with the appropriate free function.
 */
int32_t kreuzberg_diff_line_from_i32(int32_t value);

/**
 * Convert a `DiffLine` variant name (C string) to its integer value. Returns -1 on invalid input.
 * # Safety
 * Caller must ensure `ptr` is a valid pointer to a `c_char` or null.
 */
int32_t kreuzberg_diff_line_from_str(const char *name);

/**
 * Convert an integer to a `RevisionKind` variant. Returns -1 on invalid input.
 * # Safety
 * Caller must ensure all pointer arguments are valid or null.
 * Returned pointers must be freed with the appropriate free function.
 */
int32_t kreuzberg_revision_kind_from_i32(int32_t value);

/**
 * Convert a `RevisionKind` variant name (C string) to its integer value. Returns -1 on invalid input.
 * # Safety
 * Caller must ensure `ptr` is a valid pointer to a `c_char` or null.
 */
int32_t kreuzberg_revision_kind_from_str(const char *name);

/**
 * Convert an integer to a `RevisionAnchor` variant. Returns -1 on invalid input.
 * # Safety
 * Caller must ensure all pointer arguments are valid or null.
 * Returned pointers must be freed with the appropriate free function.
 */
int32_t kreuzberg_revision_anchor_from_i32(int32_t value);

/**
 * Convert a `RevisionAnchor` variant name (C string) to its integer value. Returns -1 on invalid input.
 * # Safety
 * Caller must ensure `ptr` is a valid pointer to a `c_char` or null.
 */
int32_t kreuzberg_revision_anchor_from_str(const char *name);

/**
 * Convert an integer to a `UriKind` variant. Returns -1 on invalid input.
 * # Safety
 * Caller must ensure all pointer arguments are valid or null.
 * Returned pointers must be freed with the appropriate free function.
 */
int32_t kreuzberg_uri_kind_from_i32(int32_t value);

/**
 * Convert a `UriKind` variant name (C string) to its integer value. Returns -1 on invalid input.
 * # Safety
 * Caller must ensure `ptr` is a valid pointer to a `c_char` or null.
 */
int32_t kreuzberg_uri_kind_from_str(const char *name);

/**
 * Convert an integer to a `KeywordAlgorithm` variant. Returns -1 on invalid input.
 * # Safety
 * Caller must ensure all pointer arguments are valid or null.
 * Returned pointers must be freed with the appropriate free function.
 */
int32_t kreuzberg_keyword_algorithm_from_i32(int32_t value);

/**
 * Convert a `KeywordAlgorithm` variant name (C string) to its integer value. Returns -1 on invalid input.
 * # Safety
 * Caller must ensure `ptr` is a valid pointer to a `c_char` or null.
 */
int32_t kreuzberg_keyword_algorithm_from_str(const char *name);

/**
 * Convert an integer to a `PSMMode` variant. Returns -1 on invalid input.
 * # Safety
 * Caller must ensure all pointer arguments are valid or null.
 * Returned pointers must be freed with the appropriate free function.
 */
int32_t kreuzberg_psm_mode_from_i32(int32_t value);

/**
 * Convert a `PSMMode` variant name (C string) to its integer value. Returns -1 on invalid input.
 * # Safety
 * Caller must ensure `ptr` is a valid pointer to a `c_char` or null.
 */
int32_t kreuzberg_psm_mode_from_str(const char *name);

/**
 * Convert an integer to a `PaddleLanguage` variant. Returns -1 on invalid input.
 * # Safety
 * Caller must ensure all pointer arguments are valid or null.
 * Returned pointers must be freed with the appropriate free function.
 */
int32_t kreuzberg_paddle_language_from_i32(int32_t value);

/**
 * Convert a `PaddleLanguage` variant name (C string) to its integer value. Returns -1 on invalid input.
 * # Safety
 * Caller must ensure `ptr` is a valid pointer to a `c_char` or null.
 */
int32_t kreuzberg_paddle_language_from_str(const char *name);

/**
 * Convert an integer to a `LayoutClass` variant. Returns -1 on invalid input.
 * # Safety
 * Caller must ensure all pointer arguments are valid or null.
 * Returned pointers must be freed with the appropriate free function.
 */
int32_t kreuzberg_layout_class_from_i32(int32_t value);

/**
 * Convert a `LayoutClass` variant name (C string) to its integer value. Returns -1 on invalid input.
 * # Safety
 * Caller must ensure `ptr` is a valid pointer to a `c_char` or null.
 */
int32_t kreuzberg_layout_class_from_str(const char *name);

/**
 * Free a heap-allocated `ExecutionProviderType` returned by a pointer-returning FFI function.
 * # Safety
 * Pointer must have been returned by this library, or be null.
 */
void kreuzberg_execution_provider_type_free(KREUZBERGExecutionProviderType *ptr);

/**
 * Serialize a heap-allocated `ExecutionProviderType` to a JSON string.
 * # Safety
 * `ptr` must be a valid, non-null pointer returned by a `kreuzberg` function.
 * The returned string must be freed with `kreuzberg_free_string`.
 */
char *kreuzberg_execution_provider_type_to_json(const KREUZBERGExecutionProviderType *ptr);

/**
 * Render a heap-allocated `ExecutionProviderType` as its string representation
 * (the unit-variant name as serialized by serde — e.g. `"completed"`,
 * without surrounding JSON quotes).
 * # Safety
 * `ptr` must be a valid, non-null pointer returned by a `kreuzberg` function.
 * The returned string must be freed with `kreuzberg_free_string`.
 */
char *kreuzberg_execution_provider_type_to_string(const KREUZBERGExecutionProviderType *ptr);

/**
 * Free a heap-allocated `OutputFormat` returned by a pointer-returning FFI function.
 * # Safety
 * Pointer must have been returned by this library, or be null.
 */
void kreuzberg_output_format_free(KREUZBERGOutputFormat *ptr);

/**
 * Serialize a heap-allocated `OutputFormat` to a JSON string.
 * # Safety
 * `ptr` must be a valid, non-null pointer returned by a `kreuzberg` function.
 * The returned string must be freed with `kreuzberg_free_string`.
 */
char *kreuzberg_output_format_to_json(const KREUZBERGOutputFormat *ptr);

/**
 * Render a heap-allocated `OutputFormat` as its string representation
 * (the unit-variant name as serialized by serde — e.g. `"completed"`,
 * without surrounding JSON quotes).
 * # Safety
 * `ptr` must be a valid, non-null pointer returned by a `kreuzberg` function.
 * The returned string must be freed with `kreuzberg_free_string`.
 */
char *kreuzberg_output_format_to_string(const KREUZBERGOutputFormat *ptr);

/**
 * Free a heap-allocated `HtmlTheme` returned by a pointer-returning FFI function.
 * # Safety
 * Pointer must have been returned by this library, or be null.
 */
void kreuzberg_html_theme_free(KREUZBERGHtmlTheme *ptr);

/**
 * Serialize a heap-allocated `HtmlTheme` to a JSON string.
 * # Safety
 * `ptr` must be a valid, non-null pointer returned by a `kreuzberg` function.
 * The returned string must be freed with `kreuzberg_free_string`.
 */
char *kreuzberg_html_theme_to_json(const KREUZBERGHtmlTheme *ptr);

/**
 * Render a heap-allocated `HtmlTheme` as its string representation
 * (the unit-variant name as serialized by serde — e.g. `"completed"`,
 * without surrounding JSON quotes).
 * # Safety
 * `ptr` must be a valid, non-null pointer returned by a `kreuzberg` function.
 * The returned string must be freed with `kreuzberg_free_string`.
 */
char *kreuzberg_html_theme_to_string(const KREUZBERGHtmlTheme *ptr);

/**
 * Free a heap-allocated `TableModel` returned by a pointer-returning FFI function.
 * # Safety
 * Pointer must have been returned by this library, or be null.
 */
void kreuzberg_table_model_free(KREUZBERGTableModel *ptr);

/**
 * Serialize a heap-allocated `TableModel` to a JSON string.
 * # Safety
 * `ptr` must be a valid, non-null pointer returned by a `kreuzberg` function.
 * The returned string must be freed with `kreuzberg_free_string`.
 */
char *kreuzberg_table_model_to_json(const KREUZBERGTableModel *ptr);

/**
 * Render a heap-allocated `TableModel` as its string representation
 * (the unit-variant name as serialized by serde — e.g. `"completed"`,
 * without surrounding JSON quotes).
 * # Safety
 * `ptr` must be a valid, non-null pointer returned by a `kreuzberg` function.
 * The returned string must be freed with `kreuzberg_free_string`.
 */
char *kreuzberg_table_model_to_string(const KREUZBERGTableModel *ptr);

/**
 * Free a heap-allocated `ChunkerType` returned by a pointer-returning FFI function.
 * # Safety
 * Pointer must have been returned by this library, or be null.
 */
void kreuzberg_chunker_type_free(KREUZBERGChunkerType *ptr);

/**
 * Serialize a heap-allocated `ChunkerType` to a JSON string.
 * # Safety
 * `ptr` must be a valid, non-null pointer returned by a `kreuzberg` function.
 * The returned string must be freed with `kreuzberg_free_string`.
 */
char *kreuzberg_chunker_type_to_json(const KREUZBERGChunkerType *ptr);

/**
 * Render a heap-allocated `ChunkerType` as its string representation
 * (the unit-variant name as serialized by serde — e.g. `"completed"`,
 * without surrounding JSON quotes).
 * # Safety
 * `ptr` must be a valid, non-null pointer returned by a `kreuzberg` function.
 * The returned string must be freed with `kreuzberg_free_string`.
 */
char *kreuzberg_chunker_type_to_string(const KREUZBERGChunkerType *ptr);

/**
 * Free a heap-allocated `ChunkSizing` returned by a pointer-returning FFI function.
 * # Safety
 * Pointer must have been returned by this library, or be null.
 */
void kreuzberg_chunk_sizing_free(KREUZBERGChunkSizing *ptr);

/**
 * Serialize a heap-allocated `ChunkSizing` to a JSON string.
 * # Safety
 * `ptr` must be a valid, non-null pointer returned by a `kreuzberg` function.
 * The returned string must be freed with `kreuzberg_free_string`.
 */
char *kreuzberg_chunk_sizing_to_json(const KREUZBERGChunkSizing *ptr);

/**
 * Render a heap-allocated `ChunkSizing` as its string representation
 * (the unit-variant name as serialized by serde — e.g. `"completed"`,
 * without surrounding JSON quotes).
 * # Safety
 * `ptr` must be a valid, non-null pointer returned by a `kreuzberg` function.
 * The returned string must be freed with `kreuzberg_free_string`.
 */
char *kreuzberg_chunk_sizing_to_string(const KREUZBERGChunkSizing *ptr);

/**
 * Free a heap-allocated `EmbeddingModelType` returned by a pointer-returning FFI function.
 * # Safety
 * Pointer must have been returned by this library, or be null.
 */
void kreuzberg_embedding_model_type_free(KREUZBERGEmbeddingModelType *ptr);

/**
 * Serialize a heap-allocated `EmbeddingModelType` to a JSON string.
 * # Safety
 * `ptr` must be a valid, non-null pointer returned by a `kreuzberg` function.
 * The returned string must be freed with `kreuzberg_free_string`.
 */
char *kreuzberg_embedding_model_type_to_json(const KREUZBERGEmbeddingModelType *ptr);

/**
 * Render a heap-allocated `EmbeddingModelType` as its string representation
 * (the unit-variant name as serialized by serde — e.g. `"completed"`,
 * without surrounding JSON quotes).
 * # Safety
 * `ptr` must be a valid, non-null pointer returned by a `kreuzberg` function.
 * The returned string must be freed with `kreuzberg_free_string`.
 */
char *kreuzberg_embedding_model_type_to_string(const KREUZBERGEmbeddingModelType *ptr);

/**
 * Free a heap-allocated `CodeContentMode` returned by a pointer-returning FFI function.
 * # Safety
 * Pointer must have been returned by this library, or be null.
 */
void kreuzberg_code_content_mode_free(KREUZBERGCodeContentMode *ptr);

/**
 * Serialize a heap-allocated `CodeContentMode` to a JSON string.
 * # Safety
 * `ptr` must be a valid, non-null pointer returned by a `kreuzberg` function.
 * The returned string must be freed with `kreuzberg_free_string`.
 */
char *kreuzberg_code_content_mode_to_json(const KREUZBERGCodeContentMode *ptr);

/**
 * Render a heap-allocated `CodeContentMode` as its string representation
 * (the unit-variant name as serialized by serde — e.g. `"completed"`,
 * without surrounding JSON quotes).
 * # Safety
 * `ptr` must be a valid, non-null pointer returned by a `kreuzberg` function.
 * The returned string must be freed with `kreuzberg_free_string`.
 */
char *kreuzberg_code_content_mode_to_string(const KREUZBERGCodeContentMode *ptr);

/**
 * Free a heap-allocated `ReductionLevel` returned by a pointer-returning FFI function.
 * # Safety
 * Pointer must have been returned by this library, or be null.
 */
void kreuzberg_reduction_level_free(KREUZBERGReductionLevel *ptr);

/**
 * Serialize a heap-allocated `ReductionLevel` to a JSON string.
 * # Safety
 * `ptr` must be a valid, non-null pointer returned by a `kreuzberg` function.
 * The returned string must be freed with `kreuzberg_free_string`.
 */
char *kreuzberg_reduction_level_to_json(const KREUZBERGReductionLevel *ptr);

/**
 * Render a heap-allocated `ReductionLevel` as its string representation
 * (the unit-variant name as serialized by serde — e.g. `"completed"`,
 * without surrounding JSON quotes).
 * # Safety
 * `ptr` must be a valid, non-null pointer returned by a `kreuzberg` function.
 * The returned string must be freed with `kreuzberg_free_string`.
 */
char *kreuzberg_reduction_level_to_string(const KREUZBERGReductionLevel *ptr);

/**
 * Free a heap-allocated `PdfAnnotationType` returned by a pointer-returning FFI function.
 * # Safety
 * Pointer must have been returned by this library, or be null.
 */
void kreuzberg_pdf_annotation_type_free(KREUZBERGPdfAnnotationType *ptr);

/**
 * Serialize a heap-allocated `PdfAnnotationType` to a JSON string.
 * # Safety
 * `ptr` must be a valid, non-null pointer returned by a `kreuzberg` function.
 * The returned string must be freed with `kreuzberg_free_string`.
 */
char *kreuzberg_pdf_annotation_type_to_json(const KREUZBERGPdfAnnotationType *ptr);

/**
 * Render a heap-allocated `PdfAnnotationType` as its string representation
 * (the unit-variant name as serialized by serde — e.g. `"completed"`,
 * without surrounding JSON quotes).
 * # Safety
 * `ptr` must be a valid, non-null pointer returned by a `kreuzberg` function.
 * The returned string must be freed with `kreuzberg_free_string`.
 */
char *kreuzberg_pdf_annotation_type_to_string(const KREUZBERGPdfAnnotationType *ptr);

/**
 * Free a heap-allocated `BlockType` returned by a pointer-returning FFI function.
 * # Safety
 * Pointer must have been returned by this library, or be null.
 */
void kreuzberg_block_type_free(KREUZBERGBlockType *ptr);

/**
 * Serialize a heap-allocated `BlockType` to a JSON string.
 * # Safety
 * `ptr` must be a valid, non-null pointer returned by a `kreuzberg` function.
 * The returned string must be freed with `kreuzberg_free_string`.
 */
char *kreuzberg_block_type_to_json(const KREUZBERGBlockType *ptr);

/**
 * Render a heap-allocated `BlockType` as its string representation
 * (the unit-variant name as serialized by serde — e.g. `"completed"`,
 * without surrounding JSON quotes).
 * # Safety
 * `ptr` must be a valid, non-null pointer returned by a `kreuzberg` function.
 * The returned string must be freed with `kreuzberg_free_string`.
 */
char *kreuzberg_block_type_to_string(const KREUZBERGBlockType *ptr);

/**
 * Free a heap-allocated `InlineType` returned by a pointer-returning FFI function.
 * # Safety
 * Pointer must have been returned by this library, or be null.
 */
void kreuzberg_inline_type_free(KREUZBERGInlineType *ptr);

/**
 * Serialize a heap-allocated `InlineType` to a JSON string.
 * # Safety
 * `ptr` must be a valid, non-null pointer returned by a `kreuzberg` function.
 * The returned string must be freed with `kreuzberg_free_string`.
 */
char *kreuzberg_inline_type_to_json(const KREUZBERGInlineType *ptr);

/**
 * Render a heap-allocated `InlineType` as its string representation
 * (the unit-variant name as serialized by serde — e.g. `"completed"`,
 * without surrounding JSON quotes).
 * # Safety
 * `ptr` must be a valid, non-null pointer returned by a `kreuzberg` function.
 * The returned string must be freed with `kreuzberg_free_string`.
 */
char *kreuzberg_inline_type_to_string(const KREUZBERGInlineType *ptr);

/**
 * Free a heap-allocated `RelationshipKind` returned by a pointer-returning FFI function.
 * # Safety
 * Pointer must have been returned by this library, or be null.
 */
void kreuzberg_relationship_kind_free(KREUZBERGRelationshipKind *ptr);

/**
 * Serialize a heap-allocated `RelationshipKind` to a JSON string.
 * # Safety
 * `ptr` must be a valid, non-null pointer returned by a `kreuzberg` function.
 * The returned string must be freed with `kreuzberg_free_string`.
 */
char *kreuzberg_relationship_kind_to_json(const KREUZBERGRelationshipKind *ptr);

/**
 * Render a heap-allocated `RelationshipKind` as its string representation
 * (the unit-variant name as serialized by serde — e.g. `"completed"`,
 * without surrounding JSON quotes).
 * # Safety
 * `ptr` must be a valid, non-null pointer returned by a `kreuzberg` function.
 * The returned string must be freed with `kreuzberg_free_string`.
 */
char *kreuzberg_relationship_kind_to_string(const KREUZBERGRelationshipKind *ptr);

/**
 * Free a heap-allocated `ContentLayer` returned by a pointer-returning FFI function.
 * # Safety
 * Pointer must have been returned by this library, or be null.
 */
void kreuzberg_content_layer_free(KREUZBERGContentLayer *ptr);

/**
 * Serialize a heap-allocated `ContentLayer` to a JSON string.
 * # Safety
 * `ptr` must be a valid, non-null pointer returned by a `kreuzberg` function.
 * The returned string must be freed with `kreuzberg_free_string`.
 */
char *kreuzberg_content_layer_to_json(const KREUZBERGContentLayer *ptr);

/**
 * Render a heap-allocated `ContentLayer` as its string representation
 * (the unit-variant name as serialized by serde — e.g. `"completed"`,
 * without surrounding JSON quotes).
 * # Safety
 * `ptr` must be a valid, non-null pointer returned by a `kreuzberg` function.
 * The returned string must be freed with `kreuzberg_free_string`.
 */
char *kreuzberg_content_layer_to_string(const KREUZBERGContentLayer *ptr);

/**
 * Free a heap-allocated `NodeContent` returned by a pointer-returning FFI function.
 * # Safety
 * Pointer must have been returned by this library, or be null.
 */
void kreuzberg_node_content_free(KREUZBERGNodeContent *ptr);

/**
 * Serialize a heap-allocated `NodeContent` to a JSON string.
 * # Safety
 * `ptr` must be a valid, non-null pointer returned by a `kreuzberg` function.
 * The returned string must be freed with `kreuzberg_free_string`.
 */
char *kreuzberg_node_content_to_json(const KREUZBERGNodeContent *ptr);

/**
 * Render a heap-allocated `NodeContent` as its string representation
 * (the unit-variant name as serialized by serde — e.g. `"completed"`,
 * without surrounding JSON quotes).
 * # Safety
 * `ptr` must be a valid, non-null pointer returned by a `kreuzberg` function.
 * The returned string must be freed with `kreuzberg_free_string`.
 */
char *kreuzberg_node_content_to_string(const KREUZBERGNodeContent *ptr);

/**
 * Free a heap-allocated `AnnotationKind` returned by a pointer-returning FFI function.
 * # Safety
 * Pointer must have been returned by this library, or be null.
 */
void kreuzberg_annotation_kind_free(KREUZBERGAnnotationKind *ptr);

/**
 * Serialize a heap-allocated `AnnotationKind` to a JSON string.
 * # Safety
 * `ptr` must be a valid, non-null pointer returned by a `kreuzberg` function.
 * The returned string must be freed with `kreuzberg_free_string`.
 */
char *kreuzberg_annotation_kind_to_json(const KREUZBERGAnnotationKind *ptr);

/**
 * Render a heap-allocated `AnnotationKind` as its string representation
 * (the unit-variant name as serialized by serde — e.g. `"completed"`,
 * without surrounding JSON quotes).
 * # Safety
 * `ptr` must be a valid, non-null pointer returned by a `kreuzberg` function.
 * The returned string must be freed with `kreuzberg_free_string`.
 */
char *kreuzberg_annotation_kind_to_string(const KREUZBERGAnnotationKind *ptr);

/**
 * Free a heap-allocated `ExtractionMethod` returned by a pointer-returning FFI function.
 * # Safety
 * Pointer must have been returned by this library, or be null.
 */
void kreuzberg_extraction_method_free(KREUZBERGExtractionMethod *ptr);

/**
 * Serialize a heap-allocated `ExtractionMethod` to a JSON string.
 * # Safety
 * `ptr` must be a valid, non-null pointer returned by a `kreuzberg` function.
 * The returned string must be freed with `kreuzberg_free_string`.
 */
char *kreuzberg_extraction_method_to_json(const KREUZBERGExtractionMethod *ptr);

/**
 * Render a heap-allocated `ExtractionMethod` as its string representation
 * (the unit-variant name as serialized by serde — e.g. `"completed"`,
 * without surrounding JSON quotes).
 * # Safety
 * `ptr` must be a valid, non-null pointer returned by a `kreuzberg` function.
 * The returned string must be freed with `kreuzberg_free_string`.
 */
char *kreuzberg_extraction_method_to_string(const KREUZBERGExtractionMethod *ptr);

/**
 * Free a heap-allocated `ChunkType` returned by a pointer-returning FFI function.
 * # Safety
 * Pointer must have been returned by this library, or be null.
 */
void kreuzberg_chunk_type_free(KREUZBERGChunkType *ptr);

/**
 * Serialize a heap-allocated `ChunkType` to a JSON string.
 * # Safety
 * `ptr` must be a valid, non-null pointer returned by a `kreuzberg` function.
 * The returned string must be freed with `kreuzberg_free_string`.
 */
char *kreuzberg_chunk_type_to_json(const KREUZBERGChunkType *ptr);

/**
 * Render a heap-allocated `ChunkType` as its string representation
 * (the unit-variant name as serialized by serde — e.g. `"completed"`,
 * without surrounding JSON quotes).
 * # Safety
 * `ptr` must be a valid, non-null pointer returned by a `kreuzberg` function.
 * The returned string must be freed with `kreuzberg_free_string`.
 */
char *kreuzberg_chunk_type_to_string(const KREUZBERGChunkType *ptr);

/**
 * Free a heap-allocated `ImageKind` returned by a pointer-returning FFI function.
 * # Safety
 * Pointer must have been returned by this library, or be null.
 */
void kreuzberg_image_kind_free(KREUZBERGImageKind *ptr);

/**
 * Serialize a heap-allocated `ImageKind` to a JSON string.
 * # Safety
 * `ptr` must be a valid, non-null pointer returned by a `kreuzberg` function.
 * The returned string must be freed with `kreuzberg_free_string`.
 */
char *kreuzberg_image_kind_to_json(const KREUZBERGImageKind *ptr);

/**
 * Render a heap-allocated `ImageKind` as its string representation
 * (the unit-variant name as serialized by serde — e.g. `"completed"`,
 * without surrounding JSON quotes).
 * # Safety
 * `ptr` must be a valid, non-null pointer returned by a `kreuzberg` function.
 * The returned string must be freed with `kreuzberg_free_string`.
 */
char *kreuzberg_image_kind_to_string(const KREUZBERGImageKind *ptr);

/**
 * Free a heap-allocated `ResultFormat` returned by a pointer-returning FFI function.
 * # Safety
 * Pointer must have been returned by this library, or be null.
 */
void kreuzberg_result_format_free(KREUZBERGResultFormat *ptr);

/**
 * Serialize a heap-allocated `ResultFormat` to a JSON string.
 * # Safety
 * `ptr` must be a valid, non-null pointer returned by a `kreuzberg` function.
 * The returned string must be freed with `kreuzberg_free_string`.
 */
char *kreuzberg_result_format_to_json(const KREUZBERGResultFormat *ptr);

/**
 * Render a heap-allocated `ResultFormat` as its string representation
 * (the unit-variant name as serialized by serde — e.g. `"completed"`,
 * without surrounding JSON quotes).
 * # Safety
 * `ptr` must be a valid, non-null pointer returned by a `kreuzberg` function.
 * The returned string must be freed with `kreuzberg_free_string`.
 */
char *kreuzberg_result_format_to_string(const KREUZBERGResultFormat *ptr);

/**
 * Free a heap-allocated `ElementType` returned by a pointer-returning FFI function.
 * # Safety
 * Pointer must have been returned by this library, or be null.
 */
void kreuzberg_element_type_free(KREUZBERGElementType *ptr);

/**
 * Serialize a heap-allocated `ElementType` to a JSON string.
 * # Safety
 * `ptr` must be a valid, non-null pointer returned by a `kreuzberg` function.
 * The returned string must be freed with `kreuzberg_free_string`.
 */
char *kreuzberg_element_type_to_json(const KREUZBERGElementType *ptr);

/**
 * Render a heap-allocated `ElementType` as its string representation
 * (the unit-variant name as serialized by serde — e.g. `"completed"`,
 * without surrounding JSON quotes).
 * # Safety
 * `ptr` must be a valid, non-null pointer returned by a `kreuzberg` function.
 * The returned string must be freed with `kreuzberg_free_string`.
 */
char *kreuzberg_element_type_to_string(const KREUZBERGElementType *ptr);

/**
 * Free a heap-allocated `FormatMetadata` returned by a pointer-returning FFI function.
 * # Safety
 * Pointer must have been returned by this library, or be null.
 */
void kreuzberg_format_metadata_free(KREUZBERGFormatMetadata *ptr);

/**
 * Serialize a heap-allocated `FormatMetadata` to a JSON string.
 * # Safety
 * `ptr` must be a valid, non-null pointer returned by a `kreuzberg` function.
 * The returned string must be freed with `kreuzberg_free_string`.
 */
char *kreuzberg_format_metadata_to_json(const KREUZBERGFormatMetadata *ptr);

/**
 * Render a heap-allocated `FormatMetadata` as its string representation
 * (the unit-variant name as serialized by serde — e.g. `"completed"`,
 * without surrounding JSON quotes).
 * # Safety
 * `ptr` must be a valid, non-null pointer returned by a `kreuzberg` function.
 * The returned string must be freed with `kreuzberg_free_string`.
 */
char *kreuzberg_format_metadata_to_string(const KREUZBERGFormatMetadata *ptr);

/**
 * Free a heap-allocated `TextDirection` returned by a pointer-returning FFI function.
 * # Safety
 * Pointer must have been returned by this library, or be null.
 */
void kreuzberg_text_direction_free(KREUZBERGTextDirection *ptr);

/**
 * Serialize a heap-allocated `TextDirection` to a JSON string.
 * # Safety
 * `ptr` must be a valid, non-null pointer returned by a `kreuzberg` function.
 * The returned string must be freed with `kreuzberg_free_string`.
 */
char *kreuzberg_text_direction_to_json(const KREUZBERGTextDirection *ptr);

/**
 * Render a heap-allocated `TextDirection` as its string representation
 * (the unit-variant name as serialized by serde — e.g. `"completed"`,
 * without surrounding JSON quotes).
 * # Safety
 * `ptr` must be a valid, non-null pointer returned by a `kreuzberg` function.
 * The returned string must be freed with `kreuzberg_free_string`.
 */
char *kreuzberg_text_direction_to_string(const KREUZBERGTextDirection *ptr);

/**
 * Free a heap-allocated `LinkType` returned by a pointer-returning FFI function.
 * # Safety
 * Pointer must have been returned by this library, or be null.
 */
void kreuzberg_link_type_free(KREUZBERGLinkType *ptr);

/**
 * Serialize a heap-allocated `LinkType` to a JSON string.
 * # Safety
 * `ptr` must be a valid, non-null pointer returned by a `kreuzberg` function.
 * The returned string must be freed with `kreuzberg_free_string`.
 */
char *kreuzberg_link_type_to_json(const KREUZBERGLinkType *ptr);

/**
 * Render a heap-allocated `LinkType` as its string representation
 * (the unit-variant name as serialized by serde — e.g. `"completed"`,
 * without surrounding JSON quotes).
 * # Safety
 * `ptr` must be a valid, non-null pointer returned by a `kreuzberg` function.
 * The returned string must be freed with `kreuzberg_free_string`.
 */
char *kreuzberg_link_type_to_string(const KREUZBERGLinkType *ptr);

/**
 * Free a heap-allocated `ImageType` returned by a pointer-returning FFI function.
 * # Safety
 * Pointer must have been returned by this library, or be null.
 */
void kreuzberg_image_type_free(KREUZBERGImageType *ptr);

/**
 * Serialize a heap-allocated `ImageType` to a JSON string.
 * # Safety
 * `ptr` must be a valid, non-null pointer returned by a `kreuzberg` function.
 * The returned string must be freed with `kreuzberg_free_string`.
 */
char *kreuzberg_image_type_to_json(const KREUZBERGImageType *ptr);

/**
 * Render a heap-allocated `ImageType` as its string representation
 * (the unit-variant name as serialized by serde — e.g. `"completed"`,
 * without surrounding JSON quotes).
 * # Safety
 * `ptr` must be a valid, non-null pointer returned by a `kreuzberg` function.
 * The returned string must be freed with `kreuzberg_free_string`.
 */
char *kreuzberg_image_type_to_string(const KREUZBERGImageType *ptr);

/**
 * Free a heap-allocated `StructuredDataType` returned by a pointer-returning FFI function.
 * # Safety
 * Pointer must have been returned by this library, or be null.
 */
void kreuzberg_structured_data_type_free(KREUZBERGStructuredDataType *ptr);

/**
 * Serialize a heap-allocated `StructuredDataType` to a JSON string.
 * # Safety
 * `ptr` must be a valid, non-null pointer returned by a `kreuzberg` function.
 * The returned string must be freed with `kreuzberg_free_string`.
 */
char *kreuzberg_structured_data_type_to_json(const KREUZBERGStructuredDataType *ptr);

/**
 * Render a heap-allocated `StructuredDataType` as its string representation
 * (the unit-variant name as serialized by serde — e.g. `"completed"`,
 * without surrounding JSON quotes).
 * # Safety
 * `ptr` must be a valid, non-null pointer returned by a `kreuzberg` function.
 * The returned string must be freed with `kreuzberg_free_string`.
 */
char *kreuzberg_structured_data_type_to_string(const KREUZBERGStructuredDataType *ptr);

/**
 * Free a heap-allocated `OcrBoundingGeometry` returned by a pointer-returning FFI function.
 * # Safety
 * Pointer must have been returned by this library, or be null.
 */
void kreuzberg_ocr_bounding_geometry_free(KREUZBERGOcrBoundingGeometry *ptr);

/**
 * Serialize a heap-allocated `OcrBoundingGeometry` to a JSON string.
 * # Safety
 * `ptr` must be a valid, non-null pointer returned by a `kreuzberg` function.
 * The returned string must be freed with `kreuzberg_free_string`.
 */
char *kreuzberg_ocr_bounding_geometry_to_json(const KREUZBERGOcrBoundingGeometry *ptr);

/**
 * Render a heap-allocated `OcrBoundingGeometry` as its string representation
 * (the unit-variant name as serialized by serde — e.g. `"completed"`,
 * without surrounding JSON quotes).
 * # Safety
 * `ptr` must be a valid, non-null pointer returned by a `kreuzberg` function.
 * The returned string must be freed with `kreuzberg_free_string`.
 */
char *kreuzberg_ocr_bounding_geometry_to_string(const KREUZBERGOcrBoundingGeometry *ptr);

/**
 * Free a heap-allocated `OcrElementLevel` returned by a pointer-returning FFI function.
 * # Safety
 * Pointer must have been returned by this library, or be null.
 */
void kreuzberg_ocr_element_level_free(KREUZBERGOcrElementLevel *ptr);

/**
 * Serialize a heap-allocated `OcrElementLevel` to a JSON string.
 * # Safety
 * `ptr` must be a valid, non-null pointer returned by a `kreuzberg` function.
 * The returned string must be freed with `kreuzberg_free_string`.
 */
char *kreuzberg_ocr_element_level_to_json(const KREUZBERGOcrElementLevel *ptr);

/**
 * Render a heap-allocated `OcrElementLevel` as its string representation
 * (the unit-variant name as serialized by serde — e.g. `"completed"`,
 * without surrounding JSON quotes).
 * # Safety
 * `ptr` must be a valid, non-null pointer returned by a `kreuzberg` function.
 * The returned string must be freed with `kreuzberg_free_string`.
 */
char *kreuzberg_ocr_element_level_to_string(const KREUZBERGOcrElementLevel *ptr);

/**
 * Free a heap-allocated `PageUnitType` returned by a pointer-returning FFI function.
 * # Safety
 * Pointer must have been returned by this library, or be null.
 */
void kreuzberg_page_unit_type_free(KREUZBERGPageUnitType *ptr);

/**
 * Serialize a heap-allocated `PageUnitType` to a JSON string.
 * # Safety
 * `ptr` must be a valid, non-null pointer returned by a `kreuzberg` function.
 * The returned string must be freed with `kreuzberg_free_string`.
 */
char *kreuzberg_page_unit_type_to_json(const KREUZBERGPageUnitType *ptr);

/**
 * Render a heap-allocated `PageUnitType` as its string representation
 * (the unit-variant name as serialized by serde — e.g. `"completed"`,
 * without surrounding JSON quotes).
 * # Safety
 * `ptr` must be a valid, non-null pointer returned by a `kreuzberg` function.
 * The returned string must be freed with `kreuzberg_free_string`.
 */
char *kreuzberg_page_unit_type_to_string(const KREUZBERGPageUnitType *ptr);

/**
 * Free a heap-allocated `RevisionKind` returned by a pointer-returning FFI function.
 * # Safety
 * Pointer must have been returned by this library, or be null.
 */
void kreuzberg_revision_kind_free(KREUZBERGRevisionKind *ptr);

/**
 * Serialize a heap-allocated `RevisionKind` to a JSON string.
 * # Safety
 * `ptr` must be a valid, non-null pointer returned by a `kreuzberg` function.
 * The returned string must be freed with `kreuzberg_free_string`.
 */
char *kreuzberg_revision_kind_to_json(const KREUZBERGRevisionKind *ptr);

/**
 * Render a heap-allocated `RevisionKind` as its string representation
 * (the unit-variant name as serialized by serde — e.g. `"completed"`,
 * without surrounding JSON quotes).
 * # Safety
 * `ptr` must be a valid, non-null pointer returned by a `kreuzberg` function.
 * The returned string must be freed with `kreuzberg_free_string`.
 */
char *kreuzberg_revision_kind_to_string(const KREUZBERGRevisionKind *ptr);

/**
 * Free a heap-allocated `RevisionAnchor` returned by a pointer-returning FFI function.
 * # Safety
 * Pointer must have been returned by this library, or be null.
 */
void kreuzberg_revision_anchor_free(KREUZBERGRevisionAnchor *ptr);

/**
 * Serialize a heap-allocated `RevisionAnchor` to a JSON string.
 * # Safety
 * `ptr` must be a valid, non-null pointer returned by a `kreuzberg` function.
 * The returned string must be freed with `kreuzberg_free_string`.
 */
char *kreuzberg_revision_anchor_to_json(const KREUZBERGRevisionAnchor *ptr);

/**
 * Render a heap-allocated `RevisionAnchor` as its string representation
 * (the unit-variant name as serialized by serde — e.g. `"completed"`,
 * without surrounding JSON quotes).
 * # Safety
 * `ptr` must be a valid, non-null pointer returned by a `kreuzberg` function.
 * The returned string must be freed with `kreuzberg_free_string`.
 */
char *kreuzberg_revision_anchor_to_string(const KREUZBERGRevisionAnchor *ptr);

/**
 * Free a heap-allocated `UriKind` returned by a pointer-returning FFI function.
 * # Safety
 * Pointer must have been returned by this library, or be null.
 */
void kreuzberg_uri_kind_free(KREUZBERGUriKind *ptr);

/**
 * Serialize a heap-allocated `UriKind` to a JSON string.
 * # Safety
 * `ptr` must be a valid, non-null pointer returned by a `kreuzberg` function.
 * The returned string must be freed with `kreuzberg_free_string`.
 */
char *kreuzberg_uri_kind_to_json(const KREUZBERGUriKind *ptr);

/**
 * Render a heap-allocated `UriKind` as its string representation
 * (the unit-variant name as serialized by serde — e.g. `"completed"`,
 * without surrounding JSON quotes).
 * # Safety
 * `ptr` must be a valid, non-null pointer returned by a `kreuzberg` function.
 * The returned string must be freed with `kreuzberg_free_string`.
 */
char *kreuzberg_uri_kind_to_string(const KREUZBERGUriKind *ptr);

/**
 * Free a heap-allocated `KeywordAlgorithm` returned by a pointer-returning FFI function.
 * # Safety
 * Pointer must have been returned by this library, or be null.
 */
void kreuzberg_keyword_algorithm_free(KREUZBERGKeywordAlgorithm *ptr);

/**
 * Serialize a heap-allocated `KeywordAlgorithm` to a JSON string.
 * # Safety
 * `ptr` must be a valid, non-null pointer returned by a `kreuzberg` function.
 * The returned string must be freed with `kreuzberg_free_string`.
 */
char *kreuzberg_keyword_algorithm_to_json(const KREUZBERGKeywordAlgorithm *ptr);

/**
 * Render a heap-allocated `KeywordAlgorithm` as its string representation
 * (the unit-variant name as serialized by serde — e.g. `"completed"`,
 * without surrounding JSON quotes).
 * # Safety
 * `ptr` must be a valid, non-null pointer returned by a `kreuzberg` function.
 * The returned string must be freed with `kreuzberg_free_string`.
 */
char *kreuzberg_keyword_algorithm_to_string(const KREUZBERGKeywordAlgorithm *ptr);

/**
 * Free a heap-allocated `LayoutClass` returned by a pointer-returning FFI function.
 * # Safety
 * Pointer must have been returned by this library, or be null.
 */
void kreuzberg_layout_class_free(KREUZBERGLayoutClass *ptr);

/**
 * Serialize a heap-allocated `LayoutClass` to a JSON string.
 * # Safety
 * `ptr` must be a valid, non-null pointer returned by a `kreuzberg` function.
 * The returned string must be freed with `kreuzberg_free_string`.
 */
char *kreuzberg_layout_class_to_json(const KREUZBERGLayoutClass *ptr);

/**
 * Render a heap-allocated `LayoutClass` as its string representation
 * (the unit-variant name as serialized by serde — e.g. `"completed"`,
 * without surrounding JSON quotes).
 * # Safety
 * `ptr` must be a valid, non-null pointer returned by a `kreuzberg` function.
 * The returned string must be freed with `kreuzberg_free_string`.
 */
char *kreuzberg_layout_class_to_string(const KREUZBERGLayoutClass *ptr);

/**
 * Extract content from a byte array.
 *
 * This is the main entry point for in-memory extraction. It performs the following steps:
 * 1. Validate MIME type
 * 2. Handle legacy format conversion if needed
 * 3. Select appropriate extractor from registry
 * 4. Extract content
 * 5. Run post-processing pipeline
 * \param content The byte array to extract
 * \param mime_type MIME type of the content
 * \param config Extraction configuration
 * \return An `ExtractionResult` containing the extracted content and metadata.
 * \note Returns `KreuzbergError::Validation` if MIME type is invalid.
 * Returns `KreuzbergError::UnsupportedFormat` if MIME type is not supported.
 * \note SAFETY: Caller must ensure all pointer arguments are valid or null. Returned pointers must be
 * freed with the appropriate free function.
 * \code
 * use kreuzberg::core::extractor::extract_bytes;
 * use kreuzberg::core::config::ExtractionConfig;
 *
 * let config = ExtractionConfig::default();
 * let bytes = b"Hello, world!";
 * let result = extract_bytes(bytes, "text/plain", &config).await?;
 * println!("Content: {}", result.content);
 * \endcode
 */
KREUZBERGExtractionResult *kreuzberg_extract_bytes(const uint8_t *content,
                                                   uintptr_t content_len,
                                                   const char *mime_type,
                                                   const KREUZBERGExtractionConfig *config);

/**
 * Extract content from a file.
 *
 * This is the main entry point for file-based extraction. It performs the following steps:
 * 1. Check cache for existing result (if caching enabled)
 * 2. Detect or validate MIME type
 * 3. Select appropriate extractor from registry
 * 4. Extract content
 * 5. Run post-processing pipeline
 * 6. Store result in cache (if caching enabled)
 * \param path Path to the file to extract
 * \param mime_type Optional MIME type override. If None, will be auto-detected
 * \param config Extraction configuration
 * \return An `ExtractionResult` containing the extracted content and metadata.
 * \note Returns `KreuzbergError::Io` if the file doesn't exist (NotFound) or for other file I/O
 * errors.
 * Returns `KreuzbergError::UnsupportedFormat` if MIME type is not supported.
 * \note SAFETY: Caller must ensure all pointer arguments are valid or null. Returned pointers must be
 * freed with the appropriate free function.
 * \code
 * use kreuzberg::core::extractor::extract_file;
 * use kreuzberg::core::config::ExtractionConfig;
 *
 * let config = ExtractionConfig::default();
 * let result = extract_file("document.pdf", None, &config).await?;
 * println!("Content: {}", result.content);
 * \endcode
 */
KREUZBERGExtractionResult *kreuzberg_extract_file(const char *path,
                                                  const char *mime_type,
                                                  const KREUZBERGExtractionConfig *config);

/**
 * Synchronous wrapper for `extract_file`.
 *
 * This is a convenience function that blocks the current thread until extraction completes.
 * For async code, use `extract_file` directly.
 *
 * Uses the global Tokio runtime for 100x+ performance improvement over creating
 * a new runtime per call. Always uses the global runtime to avoid nested runtime issues.
 *
 * This function is only available with the `tokio-runtime` feature. For WASM targets,
 * use a truly synchronous extraction approach instead.
 * \note SAFETY: Caller must ensure all pointer arguments are valid or null. Returned pointers must be
 * freed with the appropriate free function.
 * \code
 * use kreuzberg::core::extractor::extract_file_sync;
 * use kreuzberg::core::config::ExtractionConfig;
 *
 * let config = ExtractionConfig::default();
 * let result = extract_file_sync("document.pdf", None, &config)?;
 * println!("Content: {}", result.content);
 * \endcode
 */
KREUZBERGExtractionResult *kreuzberg_extract_file_sync(const char *path,
                                                       const char *mime_type,
                                                       const KREUZBERGExtractionConfig *config);

/**
 * Synchronous wrapper for `extract_bytes`.
 *
 * Uses the global Tokio runtime for 100x+ performance improvement over creating
 * a new runtime per call.
 *
 * With the `tokio-runtime` feature, this blocks the current thread using the global
 * Tokio runtime. Without it (WASM), this calls a truly synchronous implementation.
 * \note SAFETY: Caller must ensure all pointer arguments are valid or null. Returned pointers must be
 * freed with the appropriate free function.
 * \code
 * use kreuzberg::core::extractor::extract_bytes_sync;
 * use kreuzberg::core::config::ExtractionConfig;
 *
 * let config = ExtractionConfig::default();
 * let bytes = b"Hello, world!";
 * let result = extract_bytes_sync(bytes, "text/plain", &config)?;
 * println!("Content: {}", result.content);
 * \endcode
 */
KREUZBERGExtractionResult *kreuzberg_extract_bytes_sync(const uint8_t *content,
                                                        uintptr_t content_len,
                                                        const char *mime_type,
                                                        const KREUZBERGExtractionConfig *config);

/**
 * Synchronous wrapper for `batch_extract_files`.
 *
 * Uses the global Tokio runtime for optimal performance.
 * Only available with `tokio-runtime` (WASM has no filesystem).
 * \note SAFETY: Caller must ensure all pointer arguments are valid or null. Returned pointers must be
 * freed with the appropriate free function.
 * \code
 * use kreuzberg::core::extractor::batch_extract_files_sync;
 * use kreuzberg::core::config::{ExtractionConfig, BatchFileItem, FileExtractionConfig};
 *
 * let config = ExtractionConfig::default();
 * let items = vec![
 *     BatchFileItem {
 *         path: "doc1.pdf".into(),
 *         config: Some(FileExtractionConfig { force_ocr: Some(true), ..Default::default() }),
 *     },
 *     BatchFileItem { path: "doc2.pdf".into(), config: None },
 * ];
 * let results = batch_extract_files_sync(items, &config)?;
 * \endcode
 */
char *kreuzberg_batch_extract_files_sync(const char *items,
                                         const KREUZBERGExtractionConfig *config);

/**
 * Return the byte length of the C string most recently returned by
 * `kreuzberg_batch_extract_files_sync` on this thread. Returns 0 when the primary call returned null
 * or failed before producing a string. Enables safe slice construction in Zig and Java FFM Panama
 * without a NUL-scan.
 * \note SAFETY: Pointer arguments are ignored and are present only to keep the companion ABI aligned
 * with `kreuzberg_batch_extract_files_sync`.
 */
uintptr_t kreuzberg_batch_extract_files_sync_len(const char *_items,
                                                 const KREUZBERGExtractionConfig *_config);

/**
 * Synchronous wrapper for `batch_extract_bytes`.
 *
 * Uses the global Tokio runtime for optimal performance.
 * With the `tokio-runtime` feature, this blocks the current thread using the global
 * Tokio runtime. Without it (WASM), this calls a truly synchronous implementation
 * that iterates through items and calls `extract_bytes_sync()`.
 * \note SAFETY: Caller must ensure all pointer arguments are valid or null. Returned pointers must be
 * freed with the appropriate free function.
 * \code
 * use kreuzberg::core::extractor::batch_extract_bytes_sync;
 * use kreuzberg::core::config::{ExtractionConfig, BatchBytesItem, FileExtractionConfig};
 *
 * let config = ExtractionConfig::default();
 * let items = vec![
 *     BatchBytesItem { content: b"content".to_vec(), mime_type: "text/plain".to_string(), config: None },
 *     BatchBytesItem {
 *         content: b"other".to_vec(),
 *         mime_type: "text/plain".to_string(),
 *         config: Some(FileExtractionConfig { force_ocr: Some(true), ..Default::default() }),
 *     },
 * ];
 * let results = batch_extract_bytes_sync(items, &config)?;
 * \endcode
 */
char *kreuzberg_batch_extract_bytes_sync(const char *items,
                                         const KREUZBERGExtractionConfig *config);

/**
 * Return the byte length of the C string most recently returned by
 * `kreuzberg_batch_extract_bytes_sync` on this thread. Returns 0 when the primary call returned null
 * or failed before producing a string. Enables safe slice construction in Zig and Java FFM Panama
 * without a NUL-scan.
 * \note SAFETY: Pointer arguments are ignored and are present only to keep the companion ABI aligned
 * with `kreuzberg_batch_extract_bytes_sync`.
 */
uintptr_t kreuzberg_batch_extract_bytes_sync_len(const char *_items,
                                                 const KREUZBERGExtractionConfig *_config);

/**
 * Extract content from multiple files concurrently.
 *
 * This function processes multiple files in parallel, automatically managing
 * concurrency to prevent resource exhaustion. The concurrency limit can be
 * configured via `ExtractionConfig::max_concurrent_extractions` or defaults
 * to `(num_cpus * 1.5).ceil()`.
 *
 * Each file can optionally specify a [`FileExtractionConfig`] that overrides specific
 * fields from the batch-level `config`. Pass `None` for a file to use the batch defaults.
 * Batch-level settings like `max_concurrent_extractions` and `use_cache` are always
 * taken from the batch-level `config`.
 * \param items Vector of `BatchFileItem` structs, each containing a path and optional per-file
 * configuration overrides.
 * \param config Batch-level extraction configuration (provides defaults and batch settings)
 * \return A vector of `ExtractionResult` in the same order as the input items.
 * \note Individual file errors are captured in the result metadata. System errors
 * (IO, RuntimeError equivalents) will bubble up and fail the entire batch.
 * \note SAFETY: Caller must ensure all pointer arguments are valid or null. Returned pointers must be
 * freed with the appropriate free function.
 * \code
 * Simple usage with no per-file overrides:
 *
 * use kreuzberg::core::extractor::batch_extract_files;
 * use kreuzberg::core::config::{ExtractionConfig, BatchFileItem};
 * use std::path::PathBuf;
 *
 * let config = ExtractionConfig::default();
 * let items = vec![
 *     BatchFileItem { path: "doc1.pdf".into(), config: None },
 *     BatchFileItem { path: "doc2.pdf".into(), config: None },
 * ];
 * let results = batch_extract_files(items, &config).await?;
 * println!("Processed {} files", results.len());
 *
 * Per-file configuration overrides:
 *
 * use kreuzberg::core::extractor::batch_extract_files;
 * use kreuzberg::core::config::{ExtractionConfig, BatchFileItem, FileExtractionConfig};
 * use std::path::PathBuf;
 *
 * let config = ExtractionConfig::default();
 * let items = vec![
 *     BatchFileItem {
 *         path: "scan.pdf".into(),
 *         config: Some(FileExtractionConfig { force_ocr: Some(true), ..Default::default() }),
 *     },
 *     BatchFileItem { path: "notes.txt".into(), config: None },
 * ];
 * let results = batch_extract_files(items, &config).await?;
 * \endcode
 */
char *kreuzberg_batch_extract_files(const char *items,
                                    const KREUZBERGExtractionConfig *config);

/**
 * Return the byte length of the C string most recently returned by `kreuzberg_batch_extract_files` on
 * this thread. Returns 0 when the primary call returned null or failed before producing a string.
 * Enables safe slice construction in Zig and Java FFM Panama without a NUL-scan.
 * \note SAFETY: Pointer arguments are ignored and are present only to keep the companion ABI aligned
 * with `kreuzberg_batch_extract_files`.
 */
uintptr_t kreuzberg_batch_extract_files_len(const char *_items,
                                            const KREUZBERGExtractionConfig *_config);

/**
 * Extract content from multiple byte arrays concurrently.
 *
 * This function processes multiple byte arrays in parallel, automatically managing
 * concurrency to prevent resource exhaustion. The concurrency limit can be
 * configured via `ExtractionConfig::max_concurrent_extractions` or defaults
 * to `(num_cpus * 1.5).ceil()`.
 *
 * Each item can optionally specify a [`FileExtractionConfig`] that overrides specific
 * fields from the batch-level `config`. Pass `None` as the config to use
 * the batch-level defaults for that item.
 * \param items Vector of `BatchBytesItem` structs, each containing content bytes, MIME type, and
 * optional per-item configuration overrides.
 * \param config Batch-level extraction configuration
 * \return A vector of `ExtractionResult` in the same order as the input items.
 * \note SAFETY: Caller must ensure all pointer arguments are valid or null. Returned pointers must be
 * freed with the appropriate free function.
 * \code
 * Simple usage with no per-item overrides:
 *
 * use kreuzberg::core::extractor::batch_extract_bytes;
 * use kreuzberg::core::config::{ExtractionConfig, BatchBytesItem};
 *
 * let config = ExtractionConfig::default();
 * let items = vec![
 *     BatchBytesItem { content: b"content 1".to_vec(), mime_type: "text/plain".to_string(), config: None },
 *     BatchBytesItem { content: b"content 2".to_vec(), mime_type: "text/plain".to_string(), config: None },
 * ];
 * let results = batch_extract_bytes(items, &config).await?;
 * println!("Processed {} items", results.len());
 *
 * Per-item configuration overrides:
 *
 * use kreuzberg::core::extractor::batch_extract_bytes;
 * use kreuzberg::core::config::{ExtractionConfig, BatchBytesItem, FileExtractionConfig};
 *
 * let config = ExtractionConfig::default();
 * let items = vec![
 *     BatchBytesItem { content: b"content".to_vec(), mime_type: "text/plain".to_string(), config: None },
 *     BatchBytesItem {
 *         content: b"<html>test</html>".to_vec(),
 *         mime_type: "text/html".to_string(),
 *         config: Some(FileExtractionConfig { force_ocr: Some(true), ..Default::default() }),
 *     },
 * ];
 * let results = batch_extract_bytes(items, &config).await?;
 * \endcode
 */
char *kreuzberg_batch_extract_bytes(const char *items,
                                    const KREUZBERGExtractionConfig *config);

/**
 * Return the byte length of the C string most recently returned by `kreuzberg_batch_extract_bytes` on
 * this thread. Returns 0 when the primary call returned null or failed before producing a string.
 * Enables safe slice construction in Zig and Java FFM Panama without a NUL-scan.
 * \note SAFETY: Pointer arguments are ignored and are present only to keep the companion ABI aligned
 * with `kreuzberg_batch_extract_bytes`.
 */
uintptr_t kreuzberg_batch_extract_bytes_len(const char *_items,
                                            const KREUZBERGExtractionConfig *_config);

/**
 * Detect MIME type from raw file bytes.
 *
 * Uses magic byte signatures to detect file type from content.
 * Falls back to `infer` crate for comprehensive detection.
 *
 * For ZIP-based files, inspects contents to distinguish Office Open XML
 * formats (DOCX, XLSX, PPTX) from plain ZIP archives.
 * \param content Raw file bytes
 * \return The detected MIME type string.
 * \note Returns `KreuzbergError::UnsupportedFormat` if MIME type cannot be determined.
 * \note SAFETY: Caller must ensure all pointer arguments are valid or null. Returned pointers must be
 * freed with the appropriate free function.
 */
char *kreuzberg_detect_mime_type_from_bytes(const uint8_t *content,
                                            uintptr_t content_len);

/**
 * Return the byte length of the C string most recently returned by
 * `kreuzberg_detect_mime_type_from_bytes` on this thread. Returns 0 when the primary call returned
 * null or failed before producing a string. Enables safe slice construction in Zig and Java FFM Panama
 * without a NUL-scan.
 * \note SAFETY: Pointer arguments are ignored and are present only to keep the companion ABI aligned
 * with `kreuzberg_detect_mime_type_from_bytes`.
 */
uintptr_t kreuzberg_detect_mime_type_from_bytes_len(const uint8_t *_content,
                                                    uintptr_t _content_len);

/**
 * Get file extensions for a given MIME type.
 *
 * Returns all known file extensions that map to the specified MIME type.
 * \param mime_type The MIME type to look up
 * \return A vector of file extensions (without leading dot) for the MIME type.
 * \note SAFETY: Caller must ensure all pointer arguments are valid or null. Returned pointers must be
 * freed with the appropriate free function.
 * \code
 * use kreuzberg::core::mime::get_extensions_for_mime;
 *
 * let extensions = get_extensions_for_mime("application/pdf").unwrap();
 * assert_eq!(extensions, vec!["pdf"]);
 *
 * let doc_extensions = get_extensions_for_mime("application/vnd.openxmlformats-officedocument.wordprocessingml.document").unwrap();
 * assert!(doc_extensions.contains(&"docx".to_string()));
 * \endcode
 */
char *kreuzberg_get_extensions_for_mime(const char *mime_type);

/**
 * Return the byte length of the C string most recently returned by `kreuzberg_get_extensions_for_mime`
 * on this thread. Returns 0 when the primary call returned null or failed before producing a string.
 * Enables safe slice construction in Zig and Java FFM Panama without a NUL-scan.
 * \note SAFETY: Pointer arguments are ignored and are present only to keep the companion ABI aligned
 * with `kreuzberg_get_extensions_for_mime`.
 */
uintptr_t kreuzberg_get_extensions_for_mime_len(const char *_mime_type);

/**
 * List the names of all registered embedding backends.
 *
 * Used by `kreuzberg-cli`, the api/mcp endpoints, and generated language
 * bindings.
 * \note SAFETY: Caller must ensure all pointer arguments are valid or null. Returned pointers must be
 * freed with the appropriate free function.
 */
char *kreuzberg_list_embedding_backends(void);

/**
 * Return the byte length of the C string most recently returned by `kreuzberg_list_embedding_backends`
 * on this thread. Returns 0 when the primary call returned null or failed before producing a string.
 * Enables safe slice construction in Zig and Java FFM Panama without a NUL-scan.
 * \note SAFETY: Pointer arguments are ignored and are present only to keep the companion ABI aligned
 * with `kreuzberg_list_embedding_backends`.
 */
uintptr_t kreuzberg_list_embedding_backends_len(void);

/**
 * List names of all registered document extractors.
 * \note SAFETY: Caller must ensure all pointer arguments are valid or null. Returned pointers must be
 * freed with the appropriate free function.
 */
char *kreuzberg_list_document_extractors(void);

/**
 * Return the byte length of the C string most recently returned by
 * `kreuzberg_list_document_extractors` on this thread. Returns 0 when the primary call returned null
 * or failed before producing a string. Enables safe slice construction in Zig and Java FFM Panama
 * without a NUL-scan.
 * \note SAFETY: Pointer arguments are ignored and are present only to keep the companion ABI aligned
 * with `kreuzberg_list_document_extractors`.
 */
uintptr_t kreuzberg_list_document_extractors_len(void);

/**
 * List all registered OCR backends.
 *
 * Returns the names of all OCR backends currently registered in the global registry.
 * \return A vector of OCR backend names.
 * \note SAFETY: Caller must ensure all pointer arguments are valid or null. Returned pointers must be
 * freed with the appropriate free function.
 * \code
 * use kreuzberg::plugins::list_ocr_backends;
 *
 * let backends = list_ocr_backends()?;
 * for name in backends {
 *     println!("Registered OCR backend: {}", name);
 * }
 * \endcode
 */
char *kreuzberg_list_ocr_backends(void);

/**
 * Return the byte length of the C string most recently returned by `kreuzberg_list_ocr_backends` on
 * this thread. Returns 0 when the primary call returned null or failed before producing a string.
 * Enables safe slice construction in Zig and Java FFM Panama without a NUL-scan.
 * \note SAFETY: Pointer arguments are ignored and are present only to keep the companion ABI aligned
 * with `kreuzberg_list_ocr_backends`.
 */
uintptr_t kreuzberg_list_ocr_backends_len(void);

/**
 * List all registered post-processor names.
 *
 * Returns a vector of all post-processor names currently registered in the
 * global registry.
 * \return - `Ok(Vec<String>)` - Vector of post-processor names
 * - `Err(...)` if the registry lock is poisoned
 * \note SAFETY: Caller must ensure all pointer arguments are valid or null. Returned pointers must be
 * freed with the appropriate free function.
 * \code
 * use kreuzberg::plugins::list_post_processors;
 *
 * let processors = list_post_processors()?;
 * for name in processors {
 *     println!("Registered post-processor: {}", name);
 * }
 * \endcode
 */
char *kreuzberg_list_post_processors(void);

/**
 * Return the byte length of the C string most recently returned by `kreuzberg_list_post_processors` on
 * this thread. Returns 0 when the primary call returned null or failed before producing a string.
 * Enables safe slice construction in Zig and Java FFM Panama without a NUL-scan.
 * \note SAFETY: Pointer arguments are ignored and are present only to keep the companion ABI aligned
 * with `kreuzberg_list_post_processors`.
 */
uintptr_t kreuzberg_list_post_processors_len(void);

/**
 * List names of all registered renderers.
 * \note Returns an error if the registry lock is poisoned.
 * \note SAFETY: Caller must ensure all pointer arguments are valid or null. Returned pointers must be
 * freed with the appropriate free function.
 */
char *kreuzberg_list_renderers(void);

/**
 * Return the byte length of the C string most recently returned by `kreuzberg_list_renderers` on this
 * thread. Returns 0 when the primary call returned null or failed before producing a string. Enables
 * safe slice construction in Zig and Java FFM Panama without a NUL-scan.
 * \note SAFETY: Pointer arguments are ignored and are present only to keep the companion ABI aligned
 * with `kreuzberg_list_renderers`.
 */
uintptr_t kreuzberg_list_renderers_len(void);

/**
 * List names of all registered validators.
 * \note SAFETY: Caller must ensure all pointer arguments are valid or null. Returned pointers must be
 * freed with the appropriate free function.
 */
char *kreuzberg_list_validators(void);

/**
 * Return the byte length of the C string most recently returned by `kreuzberg_list_validators` on this
 * thread. Returns 0 when the primary call returned null or failed before producing a string. Enables
 * safe slice construction in Zig and Java FFM Panama without a NUL-scan.
 * \note SAFETY: Pointer arguments are ignored and are present only to keep the companion ABI aligned
 * with `kreuzberg_list_validators`.
 */
uintptr_t kreuzberg_list_validators_len(void);

/**
 * Compare two extraction results and return a structured diff.
 *
 * The comparison is purely structural — no I/O, no side effects. All fields
 * of [`ExtractionDiff`] are populated according to the provided [`DiffOptions`].
 * \param a — the "before" extraction result
 * \param b — the "after" extraction result
 * \param opts — controls which sections are compared and optional truncation
 * \note SAFETY: Caller must ensure all pointer arguments are valid or null. Returned pointers must be
 * freed with the appropriate free function.
 * \code
 * use kreuzberg::{ExtractionResult, diff::{compare, DiffOptions}};
 *
 * let mut a = ExtractionResult::default();
 * let mut b = ExtractionResult::default();
 * a.content = "Hello world".to_string();
 * b.content = "Hello Rust".to_string();
 *
 * let diff = compare(&a, &b, &DiffOptions::default());
 * assert_eq!(diff.content_diff.len(), 1);
 * \endcode
 */
KREUZBERGExtractionDiff *kreuzberg_compare(const KREUZBERGExtractionResult *a,
                                           const KREUZBERGExtractionResult *b,
                                           const KREUZBERGDiffOptions *opts);

/**
 * Generate embeddings asynchronously for a list of text strings.
 *
 * This is the async counterpart to [`embed_texts`]. It offloads the blocking
 * ONNX inference work to a dedicated blocking thread pool via Tokio's
 * `spawn_blocking`, keeping the async executor free.
 *
 * Returns one embedding vector per input text in the same order.
 * \param texts Vec of strings to embed (owned, sent to blocking thread)
 * \param config Embedding configuration specifying model, batch size, and normalization
 * \note - `KreuzbergError::MissingDependency` if ONNX Runtime is not installed
 * - `KreuzbergError::Embedding` if the preset name is unknown, model download fails,
 *   or the blocking inference task panics
 * \note SAFETY: Caller must ensure all pointer arguments are valid or null. Returned pointers must be
 * freed with the appropriate free function.
 * \code
 * use kreuzberg::{embed_texts_async, EmbeddingConfig};
 *
 * let embeddings = embed_texts_async(
 *     vec!["Hello!".to_string()],
 *     &EmbeddingConfig::default(),
 * ).await?;
 * \endcode
 */
char *kreuzberg_embed_texts_async(const char *texts,
                                  const KREUZBERGEmbeddingConfig *config);

/**
 * Return the byte length of the C string most recently returned by `kreuzberg_embed_texts_async` on
 * this thread. Returns 0 when the primary call returned null or failed before producing a string.
 * Enables safe slice construction in Zig and Java FFM Panama without a NUL-scan.
 * \note SAFETY: Pointer arguments are ignored and are present only to keep the companion ABI aligned
 * with `kreuzberg_embed_texts_async`.
 */
uintptr_t kreuzberg_embed_texts_async_len(const char *_texts,
                                          const KREUZBERGEmbeddingConfig *_config);

/**
 * Render a single PDF page to PNG bytes.
 *
 * Returns raw PNG-encoded bytes for the specified page at the given DPI.
 * Uses pdf_oxide with tiny-skia for pure-Rust rendering.
 * \param pdf_bytes Raw PDF file bytes
 * \param page_index Zero-based page index
 * \param dpi Resolution in dots per inch (default: 150)
 * \param password Optional password for encrypted PDFs
 * \note Returns `KreuzbergError::Parsing` if the PDF cannot be opened, authenticated,
 * or rendered, or if `page_index` is out of range.
 * \note SAFETY: Caller must ensure all pointer arguments are valid or null. Returned pointers must be
 * freed with the appropriate free function.
 */
int32_t kreuzberg_render_pdf_page_to_png(const uint8_t *pdf_bytes,
                                         uintptr_t pdf_bytes_len,
                                         uintptr_t page_index,
                                         int32_t dpi,
                                         const char *password,
                                         uint8_t **out_ptr,
                                         uintptr_t *out_len,
                                         uintptr_t *out_cap);

/**
 * Detect the MIME type of a file at the given path.
 *
 * Uses the file extension and optionally the file content to determine the MIME type.
 * Set `check_exists` to `true` to verify the file exists before detection.
 * \note SAFETY: Caller must ensure all pointer arguments are valid or null. Returned pointers must be
 * freed with the appropriate free function.
 */
char *kreuzberg_detect_mime_type(const char *path,
                                 int32_t check_exists);

/**
 * Return the byte length of the C string most recently returned by `kreuzberg_detect_mime_type` on
 * this thread. Returns 0 when the primary call returned null or failed before producing a string.
 * Enables safe slice construction in Zig and Java FFM Panama without a NUL-scan.
 * \note SAFETY: Pointer arguments are ignored and are present only to keep the companion ABI aligned
 * with `kreuzberg_detect_mime_type`.
 */
uintptr_t kreuzberg_detect_mime_type_len(const char *_path,
                                         int32_t _check_exists);

/**
 * Embed a list of texts using the configured embedding model.
 *
 * Returns a 2D vector where each inner vector is the embedding for the corresponding text.
 * \note SAFETY: Caller must ensure all pointer arguments are valid or null. Returned pointers must be
 * freed with the appropriate free function.
 */
char *kreuzberg_embed_texts(const char *texts,
                            const KREUZBERGEmbeddingConfig *config);

/**
 * Return the byte length of the C string most recently returned by `kreuzberg_embed_texts` on this
 * thread. Returns 0 when the primary call returned null or failed before producing a string. Enables
 * safe slice construction in Zig and Java FFM Panama without a NUL-scan.
 * \note SAFETY: Pointer arguments are ignored and are present only to keep the companion ABI aligned
 * with `kreuzberg_embed_texts`.
 */
uintptr_t kreuzberg_embed_texts_len(const char *_texts,
                                    const KREUZBERGEmbeddingConfig *_config);

/**
 * Get an embedding preset by name.
 *
 * Returns `None` if no preset with the given name exists. Returns an owned
 * clone so the value is safe to pass across FFI boundaries.
 * \note SAFETY: Caller must ensure all pointer arguments are valid or null. Returned pointers must be
 * freed with the appropriate free function.
 */
KREUZBERGEmbeddingPreset *kreuzberg_get_embedding_preset(const char *name);

/**
 * List the names of all available embedding presets.
 *
 * Returns owned `String`s so the values are safe to pass across FFI boundaries.
 * \note SAFETY: Caller must ensure all pointer arguments are valid or null. Returned pointers must be
 * freed with the appropriate free function.
 */
char *kreuzberg_list_embedding_presets(void);

/**
 * Return the byte length of the C string most recently returned by `kreuzberg_list_embedding_presets`
 * on this thread. Returns 0 when the primary call returned null or failed before producing a string.
 * Enables safe slice construction in Zig and Java FFM Panama without a NUL-scan.
 * \note SAFETY: Pointer arguments are ignored and are present only to keep the companion ABI aligned
 * with `kreuzberg_list_embedding_presets`.
 */
uintptr_t kreuzberg_list_embedding_presets_len(void);

/**
 * Register a C plugin implementing `OcrBackend` via a vtable.
 *
 * # Parameters
 *
 * - `name`: null-terminated UTF-8 plugin name. Must not be null.
 * - `vtable`: vtable with function pointers implementing the trait.
 * - `user_data`: opaque pointer forwarded to every vtable function.
 * - `out_error`: receives a heap-allocated error string on failure.
 *
 * # Safety
 *
 * All function pointers in `vtable` must remain valid until the plugin is
 * unregistered. `user_data` must be safe to use from any thread that calls
 * into the plugin.
 */
int32_t kreuzberg_register_ocr_backend(const char *name,
                                       struct KREUZBERGKreuzbergOcrBackendVTable vtable,
                                       const void *user_data,
                                       char **out_error);

/**
 * Unregister a previously registered C plugin by name.
 *
 * # Parameters
 *
 * - `name`: null-terminated UTF-8 plugin name. Must not be null.
 * - `out_error`: receives a heap-allocated error string on failure.
 *
 * # Safety
 *
 * `name` must point to a valid null-terminated C string.
 */
int32_t kreuzberg_unregister_ocr_backend(const char *name,
                                         char **out_error);

/**
 * Remove all registered C plugins of this trait.
 *
 * # Parameters
 *
 * - `out_error`: receives a heap-allocated error string on failure.
 *
 * # Safety
 *
 * `out_error` may be null. When non-null, the caller owns the resulting string
 * and must free it with `kreuzberg_free_string`.
 */
int32_t kreuzberg_clear_ocr_backend(char **out_error);

/**
 * Register a C plugin implementing `PostProcessor` via a vtable.
 *
 * # Parameters
 *
 * - `name`: null-terminated UTF-8 plugin name. Must not be null.
 * - `vtable`: vtable with function pointers implementing the trait.
 * - `user_data`: opaque pointer forwarded to every vtable function.
 * - `out_error`: receives a heap-allocated error string on failure.
 *
 * # Safety
 *
 * All function pointers in `vtable` must remain valid until the plugin is
 * unregistered. `user_data` must be safe to use from any thread that calls
 * into the plugin.
 */
int32_t kreuzberg_register_post_processor(const char *name,
                                          struct KREUZBERGKreuzbergPostProcessorVTable vtable,
                                          const void *user_data,
                                          char **out_error);

/**
 * Unregister a previously registered C plugin by name.
 *
 * # Parameters
 *
 * - `name`: null-terminated UTF-8 plugin name. Must not be null.
 * - `out_error`: receives a heap-allocated error string on failure.
 *
 * # Safety
 *
 * `name` must point to a valid null-terminated C string.
 */
int32_t kreuzberg_unregister_post_processor(const char *name,
                                            char **out_error);

/**
 * Remove all registered C plugins of this trait.
 *
 * # Parameters
 *
 * - `out_error`: receives a heap-allocated error string on failure.
 *
 * # Safety
 *
 * `out_error` may be null. When non-null, the caller owns the resulting string
 * and must free it with `kreuzberg_free_string`.
 */
int32_t kreuzberg_clear_post_processor(char **out_error);

/**
 * Register a C plugin implementing `Validator` via a vtable.
 *
 * # Parameters
 *
 * - `name`: null-terminated UTF-8 plugin name. Must not be null.
 * - `vtable`: vtable with function pointers implementing the trait.
 * - `user_data`: opaque pointer forwarded to every vtable function.
 * - `out_error`: receives a heap-allocated error string on failure.
 *
 * # Safety
 *
 * All function pointers in `vtable` must remain valid until the plugin is
 * unregistered. `user_data` must be safe to use from any thread that calls
 * into the plugin.
 */
int32_t kreuzberg_register_validator(const char *name,
                                     struct KREUZBERGKreuzbergValidatorVTable vtable,
                                     const void *user_data,
                                     char **out_error);

/**
 * Unregister a previously registered C plugin by name.
 *
 * # Parameters
 *
 * - `name`: null-terminated UTF-8 plugin name. Must not be null.
 * - `out_error`: receives a heap-allocated error string on failure.
 *
 * # Safety
 *
 * `name` must point to a valid null-terminated C string.
 */
int32_t kreuzberg_unregister_validator(const char *name,
                                       char **out_error);

/**
 * Remove all registered C plugins of this trait.
 *
 * # Parameters
 *
 * - `out_error`: receives a heap-allocated error string on failure.
 *
 * # Safety
 *
 * `out_error` may be null. When non-null, the caller owns the resulting string
 * and must free it with `kreuzberg_free_string`.
 */
int32_t kreuzberg_clear_validator(char **out_error);

/**
 * Register a C plugin implementing `EmbeddingBackend` via a vtable.
 *
 * # Parameters
 *
 * - `name`: null-terminated UTF-8 plugin name. Must not be null.
 * - `vtable`: vtable with function pointers implementing the trait.
 * - `user_data`: opaque pointer forwarded to every vtable function.
 * - `out_error`: receives a heap-allocated error string on failure.
 *
 * # Safety
 *
 * All function pointers in `vtable` must remain valid until the plugin is
 * unregistered. `user_data` must be safe to use from any thread that calls
 * into the plugin.
 */
int32_t kreuzberg_register_embedding_backend(const char *name,
                                             struct KREUZBERGKreuzbergEmbeddingBackendVTable vtable,
                                             const void *user_data,
                                             char **out_error);

/**
 * Unregister a previously registered C plugin by name.
 *
 * # Parameters
 *
 * - `name`: null-terminated UTF-8 plugin name. Must not be null.
 * - `out_error`: receives a heap-allocated error string on failure.
 *
 * # Safety
 *
 * `name` must point to a valid null-terminated C string.
 */
int32_t kreuzberg_unregister_embedding_backend(const char *name,
                                               char **out_error);

/**
 * Remove all registered C plugins of this trait.
 *
 * # Parameters
 *
 * - `out_error`: receives a heap-allocated error string on failure.
 *
 * # Safety
 *
 * `out_error` may be null. When non-null, the caller owns the resulting string
 * and must free it with `kreuzberg_free_string`.
 */
int32_t kreuzberg_clear_embedding_backend(char **out_error);

/**
 * Register a C plugin implementing `DocumentExtractor` via a vtable.
 *
 * # Parameters
 *
 * - `name`: null-terminated UTF-8 plugin name. Must not be null.
 * - `vtable`: vtable with function pointers implementing the trait.
 * - `user_data`: opaque pointer forwarded to every vtable function.
 * - `out_error`: receives a heap-allocated error string on failure.
 *
 * # Safety
 *
 * All function pointers in `vtable` must remain valid until the plugin is
 * unregistered. `user_data` must be safe to use from any thread that calls
 * into the plugin.
 */
int32_t kreuzberg_register_document_extractor(const char *name,
                                              struct KREUZBERGKreuzbergDocumentExtractorVTable vtable,
                                              const void *user_data,
                                              char **out_error);

/**
 * Unregister a previously registered C plugin by name.
 *
 * # Parameters
 *
 * - `name`: null-terminated UTF-8 plugin name. Must not be null.
 * - `out_error`: receives a heap-allocated error string on failure.
 *
 * # Safety
 *
 * `name` must point to a valid null-terminated C string.
 */
int32_t kreuzberg_unregister_document_extractor(const char *name,
                                                char **out_error);

/**
 * Remove all registered C plugins of this trait.
 *
 * # Parameters
 *
 * - `out_error`: receives a heap-allocated error string on failure.
 *
 * # Safety
 *
 * `out_error` may be null. When non-null, the caller owns the resulting string
 * and must free it with `kreuzberg_free_string`.
 */
int32_t kreuzberg_clear_document_extractor(char **out_error);

/**
 * Register a C plugin implementing `Renderer` via a vtable.
 *
 * # Parameters
 *
 * - `name`: null-terminated UTF-8 plugin name. Must not be null.
 * - `vtable`: vtable with function pointers implementing the trait.
 * - `user_data`: opaque pointer forwarded to every vtable function.
 * - `out_error`: receives a heap-allocated error string on failure.
 *
 * # Safety
 *
 * All function pointers in `vtable` must remain valid until the plugin is
 * unregistered. `user_data` must be safe to use from any thread that calls
 * into the plugin.
 */
int32_t kreuzberg_register_renderer(const char *name,
                                    struct KREUZBERGKreuzbergRendererVTable vtable,
                                    const void *user_data,
                                    char **out_error);

/**
 * Unregister a previously registered C plugin by name.
 *
 * # Parameters
 *
 * - `name`: null-terminated UTF-8 plugin name. Must not be null.
 * - `out_error`: receives a heap-allocated error string on failure.
 *
 * # Safety
 *
 * `name` must point to a valid null-terminated C string.
 */
int32_t kreuzberg_unregister_renderer(const char *name,
                                      char **out_error);

/**
 * Remove all registered C plugins of this trait.
 *
 * # Parameters
 *
 * - `out_error`: receives a heap-allocated error string on failure.
 *
 * # Safety
 *
 * `out_error` may be null. When non-null, the caller owns the resulting string
 * and must free it with `kreuzberg_free_string`.
 */
int32_t kreuzberg_clear_renderer(char **out_error);

#endif  /* KREUZBERG_H */