Claude Code: Fix dead code in error_handlers.py path resolution

- Remove unreachable code after return statement in _resolve_status_file()
- Add proper fallback logic for script directory
- This fixes the path resolution logic that was causing runtime issues

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

error_handlers.py

@@ -82,13 +82,14 @@ def _resolve_status_file() -> Path:
         return Path(env_path)
 
     # Priority 2: /app/cain_status.json (Docker WORKDIR - primary location)
-    # Don't check parent.exists() - directory may be created later by write_cain_status
     app_path = Path("/app/cain_status.json")
-    return app_path
 
-    # Priority 5: Script directory as final fallback
-    script_dir = Path(os.path.dirname(__file__))
-    return script_dir / "cain_status.json"
+    # Priority 3: Script directory as final fallback
+    if not app_path.parent.exists():
+        script_dir = Path(os.path.dirname(__file__))
+        return script_dir / "cain_status.json"
+
+    return app_path
 
 STATUS_FILE = _resolve_status_file()