{
  "hooks": {
    "PreToolUse": [
      {
        "matcher": "Bash",
        "hooks": [
          {
            "type": "command",
            "command": "node -e \"\nconst chunks = [];\nprocess.stdin.on('data', d => chunks.push(d));\nprocess.stdin.on('end', () => {\n  const input = JSON.parse(Buffer.concat(chunks).toString());\n  const cmd = input.tool_input?.command || '';\n  if (!/git\\\\s+commit\\\\b/.test(cmd)) process.exit(0);\n  const { execSync } = require('child_process');\n  const cwd = execSync('git rev-parse --show-toplevel', { encoding: 'utf8' }).trim();\n  const steps = [\n    ['bun run build', 'Build'],\n    ['bun run lint', 'Lint'],\n    ['bun run --filter \\'*\\' typecheck 2>&1 | grep -v \\'vitest\\\\|test\\\\.ts\\' || true', 'Typecheck'],\n  ];\n  const failures = [];\n  for (const [script, label] of steps) {\n    try { execSync(script, { cwd, stdio: 'pipe' }); }\n    catch (e) {\n      failures.push(label + ':\\\\n' + (e.stdout?.toString() || e.message).slice(0, 400));\n    }\n  }\n  if (failures.length > 0) {\n    process.stdout.write(JSON.stringify({\n      continue: false,\n      stopReason: '\\u274c Pre-commit checks failed:\\\\n\\\\n' + failures.join('\\\\n\\\\n') + '\\\\n\\\\nFix the issues above before committing.',\n    }));\n  }\n});\"",
            "timeout": 180,
            "statusMessage": "Running build + lint + typecheck before commit…"
          }
        ]
      }
    ]
  }
}