Nomad changes

docs/snippets/swift/api/batch_extract_files_sync.md

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+```swift title="Swift"
+import Foundation
+import Kreuzberg
+import RustBridge
+
+// `BatchFileItem` is an opaque swift-bridge class with no public Swift
+// constructor — build items from JSON via `batchFileItemFromJson`.
+let items = RustVec<BatchFileItem>()
+for path in ["doc1.pdf", "doc2.docx", "report.pdf"] {
+    let json = "{\"path\": \"\(path)\"}"
+    items.push(value: try batchFileItemFromJson(json))
+}
+
+let config = try extractionConfigFromJson("{}")
+let results = try batchExtractFilesSync(items, config)
+
+for (index, result) in results.enumerated() {
+    print("File \(index): \(result.content().toString().count) chars")
+}
+```