Handle stringified AI writer rewrites

src/vk_parser_app/workers/ai_writer.py

@@ -135,6 +135,11 @@ def validate_rewrites(
     rewrites = data.get("rewrites")
     if not isinstance(rewrites, list) and isinstance(data.get("data"), dict):
         rewrites = data["data"].get("rewrites")
+    if isinstance(rewrites, str):
+        try:
+            rewrites = json.loads(rewrites)
+        except json.JSONDecodeError:
+            pass
     if not isinstance(rewrites, list):
         raise ValueError("AI response has no rewrites list")
     out: list[dict] = []