fix: skip corrupted run state files in list_runs (#3814)

* fix: skip corrupted run state files in list_runs

* fix: address review comments - add UnicodeDecodeError, dict validation, and regression tests

- Catch UnicodeDecodeError for invalid UTF-8 encoding
- Validate loaded JSON is a dict with required 'run_id' key
- Add 5 regression tests for corrupted state files

Fixes #3814

src/specify_cli/workflows/engine.py

@@ -1710,8 +1710,13 @@ class WorkflowEngine:
                 continue
             state_path = run_dir / "state.json"
             if state_path.exists():
-                with open(state_path, encoding="utf-8") as f:
-                    state_data = json.load(f)
+                try:
+                    with open(state_path, encoding="utf-8") as f:
+                        state_data = json.load(f)
+                except (json.JSONDecodeError, OSError, UnicodeDecodeError):
+                    continue
+                if not isinstance(state_data, dict) or "run_id" not in state_data:
+                    continue
                 runs.append(state_data)
         return runs