fix: include .md/.mdx document files in graphify update rebuild path

graphify/watch.py

@@ -70,6 +70,13 @@ def _rebuild_code(watch_path: Path, *, follow_symlinks: bool = False, force: boo
         detected = detect(watch_path, follow_symlinks=follow_symlinks)
         code_files = [Path(f) for f in detected['files']['code']]
 
+        # Include document files that have AST extractors (e.g. .md, .mdx)
+        from graphify.extract import _get_extractor
+        for doc_file in detected['files'].get('document', []):
+            p = Path(doc_file)
+            if _get_extractor(p) is not None:
+                code_files.append(p)
+
         if not code_files:
             print("[graphify watch] No code files found - nothing to rebuild.")
             return False