Nomad changes

docs/snippets/c/plugins/extractor_registration.md

@@ -0,0 +1,27 @@
+```c title="C"
+#include <kreuzberg.h>
+#include <stdio.h>
+
+/*
+ * The kreuzberg C FFI does not expose a public function for registering
+ * custom DocumentExtractor implementations from C. Document extractors must
+ * be registered from Rust via `kreuzberg::plugins::registry::get_document_extractor_registry()`
+ * before the C library is loaded.
+ *
+ * From C you can inspect which extractors the core has registered:
+ */
+
+int main(void) {
+    char *json = kreuzberg_list_document_extractors();
+    if (!json) {
+        fprintf(stderr, "list document extractors failed (code %d): %s\n",
+                kreuzberg_last_error_code(),
+                kreuzberg_last_error_context());
+        return 1;
+    }
+
+    printf("Registered document extractors: %s\n", json);
+    kreuzberg_free_string(json);
+    return 0;
+}
+```