/engineer-work — Plan Execution

Execute implementation plans task-by-task with structured progress tracking, incremental commits, quality checks, and PR creation.

When to Use

• User says "build this", "implement this", "start working"
• After completing /engineer-plan and ready to execute
• User provides a plan file to implement

Process

Step 1: Setup

Locate the plan: Use $ARGUMENTS as the plan path, or check docs/plans/ for the most recent plan, or ask the user.

Create a branch:

git checkout -b feature/<plan-name>

Initialize tracking: Create a TodoWrite with all tasks from the plan. Mark Task 0 (setup) as in_progress.

Step 2: Execute Tasks

Work through each task in dependency order.

Per-task loop:

1. Mark task in_progress in TodoWrite
2. Read the task — review acceptance criteria, key files
3. Implement — follow existing codebase patterns, keep changes minimal
4. Self-check — verify acceptance criteria are met
5. Commit — one commit per logical unit of work
6. Mark task completed in TodoWrite

Implementation rules:

• Follow existing patterns (don't introduce new conventions)
• Keep changes minimal — implement what the task says, nothing more
• Run npx tsc --noEmit after significant changes
• Fix lint errors as you go
• If stuck, check docs/solutions/ for relevant past solutions
• If a task reveals a plan problem, note it and adapt

Commit format:

type(scope): description

Types: feat, fix, refactor, chore, test, docs

• Imperative mood: "add" not "added"
• Under 72 characters
• One commit per task (split large tasks into multiple)

Step 3: Quality Checks

After all tasks complete, detect the tech stack and run appropriate checks.

Always run:

npx tsc --noEmit          # TypeScript type check
npm run lint              # or project-specific lint command

Stack-adaptive checks (detect from config files):

• Next.js (next.config.*): npm run build to catch build errors
• Expo (app.json): npx expo lint
• Tests: npm test if test scripts exist

Fix any issues found, commit as fix: address lint/type issues, and re-run checks.

Step 4: Create PR

gh pr create --title "[type]: [feature name]" --body "$(cat <<'EOF'
## Summary
- [Primary change]
- [Secondary change]

## Plan Reference
[Link to docs/plans/ file]

## Testing
- [ ] Type check passes
- [ ] Lint passes
- [ ] [Feature-specific verification]
EOF
)"

Step 5: Handoff

Use AskUserQuestion:

• "PR is ready. What's next?" (header: "Next step")
  • "Run a full review (/engineer-review)" — Comprehensive code review
  • "Document learnings (/knowledge-compound)" — Capture patterns
  • "Done" — Close out

Output

• Feature branch with incremental commits
• Pull request on GitHub

Next Steps

• Want a thorough review? → /engineer-review
• Security check needed? → /security-audit
• Capture what you learned? → /knowledge-compound