{
  "description": "Protect critical files from accidental modification. Prevents editing of important system files, configuration files, and production code.",
  "hooks": {
    "PreToolUse": [
      {
        "matcher": "Edit|MultiEdit|Write",
        "hooks": [
          {
            "type": "command",
            "command": "PROTECTED_PATTERNS=('*/etc/*' '*/usr/bin/*' '*/usr/sbin/*' '*.production.*' '*prod*config*' '*/node_modules/*' '*/vendor/*'); for pattern in \"${PROTECTED_PATTERNS[@]}\"; do if [[ \"$CLAUDE_TOOL_FILE_PATH\" == $pattern ]]; then echo \"Error: File $CLAUDE_TOOL_FILE_PATH is protected from modification\" >&2; exit 1; fi; done"
          }
        ]
      }
    ]
  }
}