Nomad changes

docs/snippets/c/config/config_discover.md

@@ -0,0 +1,62 @@
+```c title="C"
+#include "kreuzberg.h"
+#include <stdio.h>
+#include <stdlib.h>
+#include <string.h>
+
+/* The C FFI does not expose config-file auto-discovery directly. Load the
+ * file contents in your application and pass the JSON to
+ * kreuzberg_extraction_config_from_json. For TOML/YAML, convert in your
+ * application before calling the FFI. */
+static char *read_text_file(const char *path) {
+    FILE *fp = fopen(path, "rb");
+    if (!fp) {
+        return NULL;
+    }
+    fseek(fp, 0, SEEK_END);
+    long size = ftell(fp);
+    fseek(fp, 0, SEEK_SET);
+    char *buf = (char *)malloc((size_t)size + 1);
+    if (!buf) {
+        fclose(fp);
+        return NULL;
+    }
+    fread(buf, 1, (size_t)size, fp);
+    buf[size] = '\0';
+    fclose(fp);
+    return buf;
+}
+
+int main(void) {
+    char *json = read_text_file("kreuzberg.json");
+    KREUZBERGExtractionConfig *config = json
+        ? kreuzberg_extraction_config_from_json(json)
+        : kreuzberg_extraction_config_default();
+    free(json);
+
+    if (!config) {
+        fprintf(stderr, "config load failed (code %d): %s\n",
+                kreuzberg_last_error_code(),
+                kreuzberg_last_error_context());
+        return 1;
+    }
+
+    KREUZBERGExtractionResult *result =
+        kreuzberg_extract_file_sync("document.pdf", NULL, config);
+    if (!result) {
+        fprintf(stderr, "extraction failed (code %d): %s\n",
+                kreuzberg_last_error_code(),
+                kreuzberg_last_error_context());
+        kreuzberg_extraction_config_free(config);
+        return 1;
+    }
+
+    char *content = kreuzberg_extraction_result_content(result);
+    printf("%s\n", content ? content : "(empty)");
+    kreuzberg_free_string(content);
+
+    kreuzberg_extraction_result_free(result);
+    kreuzberg_extraction_config_free(config);
+    return 0;
+}
+```