Bump _hf_repos limit 500→2000 to cover full catalog

app.py

@@ -175,7 +175,7 @@ def _parse_mode_from_json_col(cell: object) -> str:
 def _hf_repos() -> set[str]:
     try:
         api = HfApi()
-        repos = api.list_datasets(author=HF_ORG, limit=500)
+        repos = api.list_datasets(author=HF_ORG, limit=2000)
         return {r.id.split("/", 1)[-1] for r in repos}
     except (HfHubHTTPError, Exception):  # noqa: BLE001
         return set()