spawn: Hook for Claude Code

{
  "PreToolUse": [
    {
      "matcher": "Write|Edit",
      "hooks": [
        {
          "type": "command",
          "command": "bun .claude/scripts/enforce-worktree.ts"
        }
      ]
    },
    {
      "matcher": "Bash",
      "hooks": [
        {
          "type": "command",
          "command": "bun .claude/scripts/pre-merge-check.ts"
        }
      ]
    },
    {
      "matcher": "Bash",
      "hooks": [
        {
          "type": "command",
          "command": "bash -c 'INPUT=$(cat); CMD=$(echo \"$INPUT\" | jq -r \".tool_input.command // empty\"); echo \"$CMD\" | grep -qE \"gh pr (merge|ready)\" || exit 0; WT=$(echo \"$CMD\" | grep -oE \"/tmp/spawn-worktrees/[a-zA-Z0-9._/-]+\" | head -1); if [ -n \"$WT\" ] && [ -d \"$WT/packages/cli\" ]; then ROOT=\"$WT\"; else ROOT=$(git rev-parse --show-toplevel 2>/dev/null); fi; if [ -z \"$ROOT\" ] || [ ! -d \"$ROOT/packages/cli\" ]; then echo \"WARNING: Could not find spawn repo for pre-merge checks\" >&2; exit 0; fi; cd \"$ROOT/packages/cli\" || exit 2; echo \"Pre-merge gate: running biome check + bun test in $ROOT/packages/cli ...\" >&2; bunx @biomejs/biome check src/ 2>&1 || { echo \"BLOCKED: biome check failed — fix lint/format issues before merging\" >&2; exit 2; }; bun test 2>&1 || { echo \"BLOCKED: tests failed — fix failures before merging\" >&2; exit 2; }; echo \"Pre-merge checks passed\" >&2'"
        }
      ]
    }
  ]
}