Nomad changes

docs/snippets/c/plugins/unregister_plugins.md

@@ -0,0 +1,31 @@
+```c title="C"
+#include <kreuzberg.h>
+#include <stdio.h>
+
+static int unregister_or_log(
+    int32_t (*unregister_fn)(const char *, char **),
+    const char *kind,
+    const char *name
+) {
+    char *err = NULL;
+    int32_t rc = unregister_fn(name, &err);
+    if (rc != 0) {
+        fprintf(stderr, "unregister %s '%s' failed: %s\n",
+                kind,
+                name,
+                err ? err : "(no detail)");
+        kreuzberg_free_string(err);
+        return 1;
+    }
+    return 0;
+}
+
+int main(void) {
+    int failures = 0;
+    failures += unregister_or_log(kreuzberg_unregister_post_processor, "post-processor", "word-count");
+    failures += unregister_or_log(kreuzberg_unregister_validator, "validator", "min-length-validator");
+    failures += unregister_or_log(kreuzberg_unregister_ocr_backend, "OCR backend", "my-ocr");
+    failures += unregister_or_log(kreuzberg_unregister_embedding_backend, "embedding backend", "my-embedder");
+    return failures == 0 ? 0 : 1;
+}
+```