Fix 4 bugs from third code review

- Fix delete_proj not persisting cleared current_project to config:
  page reload after deleting active project restored deleted name,
  silently breaking all DB sync
- Fix sync_to_db crash on non-dict batch_data items: add isinstance
  guard matching import_json_file
- Fix output_types ignored in load_dynamic: parse declared types and
  use to_int()/to_float() to coerce values, so downstream ComfyUI
  nodes receive correct types even when API returns strings
- Fix backward-compat comma-split for types not trimming whitespace:
  legacy workflows with "STRING, INT" got types " INT" breaking
  ComfyUI connection type-matching

Co-Authored-By: Claude Opus 4.6 <noreply@anthropic.com>

utils.py

@@ -202,6 +202,8 @@ def sync_to_db(db, project_name: str, file_path: Path, data: dict) -> None:
             if isinstance(batch_data, list):
                 db.conn.execute("DELETE FROM sequences WHERE data_file_id = ?", (df_id,))
                 for item in batch_data:
+                    if not isinstance(item, dict):
+                        continue
                     seq_num = int(item.get(KEY_SEQUENCE_NUMBER, 0))
                     now = __import__('time').time()
                     db.conn.execute(