cursor:do — Single-Task Write Delegate to Cursor Composer

🚀 cursor / composer-2.5-fast / feat/foo-bar / Add login form validation
これから:
1. pre-check (branch / cursor-agent) → 専用 worktree 作成
2. composer に実装委譲 (--write)
3. diff レビュー → cherry-pick → Plans.md 更新

× 「composer 2.5 で実装する流れですね、まず確認します」（中身のない前置き）
× 「Cursor を呼ぶ前に branch を見ます」 → bash → 「branch を確認しました」（言い換え）
× ★ Insight ──── Cursor の強みは…

🚀 cursor / composer-2.5-fast / feat/foo-bar / Add login form validation
これから: worktree 作成 → composer に実装委譲 → diff レビュー → cherry-pick

CURSOR_DO_AWAITING_TASK: provide a one-line task description as $ARGUMENTS

🚀 cursor / composer-2.5-fast / <current-branch> / <task-first-60-chars>

bash -c '
  set +e
  echo "==BRANCH=="; git branch --show-current
  echo "==VERSION=="; cat VERSION 2>/dev/null
  echo "==PLANS_TAIL=="; tail -n 12 Plans.md 2>/dev/null
  echo "==CURSOR_AGENT=="
  CURSOR_AGENT_BIN="${CURSOR_AGENT_BIN:-}"
  if [ -z "$CURSOR_AGENT_BIN" ]; then
    if command -v cursor-agent >/dev/null 2>&1; then
      CURSOR_AGENT_BIN="$(command -v cursor-agent)"
    elif [ -x "$HOME/.local/bin/cursor-agent" ]; then
      CURSOR_AGENT_BIN="$HOME/.local/bin/cursor-agent"
    fi
  fi
  if [ -z "$CURSOR_AGENT_BIN" ]; then
    echo "NOT_INSTALLED"
  else
    "$CURSOR_AGENT_BIN" --version 2>/dev/null || echo "NOT_INSTALLED"
  fi
'

bash -c '
  set -euo pipefail
  valid_root() {
    [ -n "${1:-}" ] && [ -f "$1/scripts/cursor-companion.sh" ] && { [ -f "$1/.claude-plugin/plugin.json" ] || [ -f "$1/.codex-plugin/plugin.json" ] || [ -f "$1/.cursor-plugin/plugin.json" ]; }
  }
  HARNESS_PLUGIN_ROOT="${HARNESS_PLUGIN_ROOT:-${CLAUDE_PLUGIN_ROOT:-}}"
  ROOT="$HARNESS_PLUGIN_ROOT"
  if ! valid_root "$ROOT"; then
    ROOT=""
    if [ -n "${CLAUDE_SKILL_DIR:-}" ]; then
      probe="$(cd "${CLAUDE_SKILL_DIR}" && pwd)"
      while [ "$probe" != "/" ] && ! valid_root "$probe"; do
        probe="$(cd "$probe/.." && pwd)"
      done
      valid_root "$probe" && ROOT="$probe"
    fi
  fi
  if ! valid_root "$ROOT"; then
    ROOT=""
    for c in "${CLAUDE_PROJECT_DIR:-}" "$PWD" \
             "$HOME/.claude/plugins/marketplaces/claude-code-harness-marketplace" \
             "$HOME/.claude/plugins/cache/claude-code-harness-marketplace/claude-code-harness/"*; do
      if valid_root "$c"; then ROOT="$c"; break; fi
    done
  fi
  if ! valid_root "$ROOT"; then
    echo "ERROR: claude-code-harness plugin root not found (no scripts/cursor-companion.sh)" >&2
    exit 2
  fi
  HARNESS_PLUGIN_ROOT="$ROOT"
  BACKEND=$(bash "${HARNESS_PLUGIN_ROOT}/scripts/resolve-impl-backend.sh" --backend cursor --role worker)
  MODEL=$(bash "${HARNESS_PLUGIN_ROOT}/scripts/model-routing.sh" --host cursor --role worker --field model)
  echo "PLUGIN_ROOT=${HARNESS_PLUGIN_ROOT}"
  echo "BACKEND=$BACKEND"
  echo "MODEL=$MODEL"
'

bash -c '
  set -euo pipefail
  REPO_ROOT="$(git rev-parse --show-toplevel)"
  cd "$REPO_ROOT"
  ID="$(date +%Y%m%d-%H%M%S)-$$"
  WT_DIR="$REPO_ROOT/.claude/worktrees/cursor-do-${ID}"
  BASE_REF="$(git rev-parse HEAD)"
  BASE_BRANCH="$(git branch --show-current)"
  WT_BRANCH="cursor-do/${ID}"
  mkdir -p "$REPO_ROOT/.claude/worktrees"
  git worktree add -b "${WT_BRANCH}" "${WT_DIR}" "${BASE_REF}"
  echo "REPO_ROOT=${REPO_ROOT}"
  echo "WT_DIR=${WT_DIR}"
  echo "WT_BRANCH=${WT_BRANCH}"
  echo "BASE_REF=${BASE_REF}"
  echo "BASE_BRANCH=${BASE_BRANCH}"
'

bash -c '
  set -euo pipefail
  valid_root() {
    [ -n "${1:-}" ] && [ -f "$1/scripts/cursor-companion.sh" ] && { [ -f "$1/.claude-plugin/plugin.json" ] || [ -f "$1/.codex-plugin/plugin.json" ] || [ -f "$1/.cursor-plugin/plugin.json" ]; }
  }
  HARNESS_PLUGIN_ROOT="${HARNESS_PLUGIN_ROOT:-${CLAUDE_PLUGIN_ROOT:-}}"
  ROOT="${PLUGIN_ROOT:-$HARNESS_PLUGIN_ROOT}"
  if ! valid_root "$ROOT"; then
    ROOT=""
    if [ -n "${CLAUDE_SKILL_DIR:-}" ]; then
      probe="$(cd "${CLAUDE_SKILL_DIR}" && pwd)"
      while [ "$probe" != "/" ] && ! valid_root "$probe"; do
        probe="$(cd "$probe/.." && pwd)"
      done
      valid_root "$probe" && ROOT="$probe"
    fi
  fi
  if ! valid_root "$ROOT"; then
    ROOT=""
    for c in "${CLAUDE_PROJECT_DIR:-}" "$PWD" \
             "$HOME/.claude/plugins/marketplaces/claude-code-harness-marketplace" \
             "$HOME/.claude/plugins/cache/claude-code-harness-marketplace/claude-code-harness/"*; do
      if valid_root "$c"; then ROOT="$c"; break; fi
    done
  fi
  if ! valid_root "$ROOT"; then
    echo "ERROR: claude-code-harness plugin root not found (no scripts/cursor-companion.sh)" >&2
    exit 2
  fi
  HARNESS_PLUGIN_ROOT="$ROOT"
  PROMPT="<task-description>

Constraints:
- Modify only files relevant to the task.
- Keep existing tests green. Add tests when the task is verifiable.
- Match existing code style and naming.
- Create exactly one git commit if your environment supports it; otherwise leave one dirty changeset for Lead auto-commit.
- Do not touch .claude-plugin/settings*, .claude/settings*, .eslintrc*, biome.json, tsconfig*.json."
  bash "${HARNESS_PLUGIN_ROOT}/scripts/cursor-companion.sh" task \
    --write \
    --workspace "${WT_DIR}" \
    "${PROMPT}"
' 2>&1

bash -c '
  set -euo pipefail
  cd "${WT_DIR}"
  # Composer は dirty changeset を返すことがあるため、既存 commit に fold する
  if [ -n "$(git status --porcelain)" ]; then
    git add -A
    if [ "$(git rev-list --count "${BASE_REF}..HEAD")" -gt 0 ]; then
      git -c user.name="cursor-composer" -c user.email="cursor-composer@local" \
        commit --amend --no-edit --no-verify
      echo "==AUTO_AMENDED=="
    else
      git -c user.name="cursor-composer" -c user.email="cursor-composer@local" \
        commit --no-verify -m "cursor: ${TASK_SUMMARY:-cursor-do delegated change}"
      echo "==AUTO_COMMITTED=="
    fi
    git log -1 --oneline
  fi
  echo "==LOG=="
  git log --oneline "${BASE_REF}..HEAD"
  echo "==STAT=="
  git diff --stat "${BASE_REF}..HEAD"
  echo "==DIFF=="
  git diff "${BASE_REF}..HEAD"
'

bash -c '
  set -euo pipefail
  COMMIT_COUNT="$(cd "${WT_DIR}" && git rev-list --count "${BASE_REF}..HEAD")"
  if [ "${COMMIT_COUNT}" -eq 0 ]; then
    echo "ERROR: no commits to cherry-pick"
    exit 1
  fi
  if [ "${COMMIT_COUNT}" -ne 1 ]; then
    echo "ERROR: cursor returned ${COMMIT_COUNT} commits; expected exactly one. Keep worktree for manual review: ${WT_DIR}"
    exit 1
  fi
  if ! git diff --quiet -- Plans.md || ! git diff --cached --quiet -- Plans.md; then
    echo "ERROR: Plans.md has pre-existing local edits; refusing to cherry-pick before the cursor:do marker amend"
    exit 1
  fi
  SHA="$(cd "${WT_DIR}" && git rev-parse HEAD)"
  git cherry-pick "${SHA}"
  echo "==CHERRY_PICKED=="
  git log --oneline -n 1
'

| <task> | ... | cc:done [<merged-sha>] |

bash -c '
  set -euo pipefail
  if git diff --quiet -- Plans.md; then
    echo "PLANS_UPDATED=0"
  else
    git add Plans.md
    git commit --amend --no-edit
    echo "PLANS_UPDATED=1"
    echo "MERGED_SHA=$(git rev-parse HEAD)"
  fi
'

bash -c '
  set -euo pipefail
  git worktree remove --force "${WT_DIR}"
  git branch -D "${WT_BRANCH}" 2>/dev/null || true
  echo "==CLEANUP=="
  git worktree list | grep -v "cursor-do-" || true
'

cursor:do completed
   task: <task-first-60-chars>
   commits: <count>
   base: <BASE_REF> → cherry-picked into <BASE_BRANCH>
   plans: <updated|skipped (no match)>
   files: <changed-file-count> changed, +<inserts> -<deletes>