{
  "hooks": {
    "PreToolUse": [
      {
        "matcher": "Edit|Write",
        "hooks": [
          {
            "type": "command",
            "command": "python3 -c \"\nimport sys, json\ndata = json.load(sys.stdin)\nfp = data.get('tool_input', {}).get('file_path', '')\nif 'PcanBasic.cs' in fp or '/old_source/' in fp or 'old_source/' in fp:\n    print(json.dumps({'decision': 'block', 'reason': 'PROTECTED FILE: PcanBasic.cs is a vendor file and old_source/ is archived reference. Neither should be modified.'}))\n    sys.exit(1)\n\"",
            "timeout": 5,
            "statusMessage": "Checking protected files..."
          }
        ]
      }
    ]
  }
}