Subagent-Driven Development

Process

1. Read plan, extract all tasks
      ↓
2. Create TodoWrite with all tasks
      ↓
3. For each task:
   a. Dispatch Implementer Subagent
   b. Implementer: implement, test, commit
   c. Dispatch Spec Reviewer (matches spec?)
   d. Spec issues? → Implementer fixes → re-review
   e. Dispatch Quality Reviewer (code quality?)
   f. Quality issues? → Implementer fixes → re-review
   g. Mark task complete
      ↓
4. All tasks complete → Final review → Done

Review Order is Critical

Spec Compliance Review FIRST
        ↓
    ✅ Passes
        ↓
Code Quality Review SECOND

Why: No point reviewing code quality if it doesn't meet spec.

Subagent Prompts

Implementer

• Provide FULL task text (don't make subagent read file)
• Provide context (where task fits in plan)
• Require TDD and self-review

Spec Reviewer

• Check: Does implementation match spec exactly?
• Missing anything? Added anything extra?

Quality Reviewer

• Check: Tests, readability, error handling, performance, security
• Rate issues as Critical/Important/Minor

Key Rules

• ALWAYS run both reviews (spec AND quality)
• MUST fix issues before proceeding to next task
• NEVER dispatch multiple implementers in parallel
• ALWAYS provide full task text to subagent
• Spec review FIRST, then quality review

Red Flags

Never:

• Skip any review
• Proceed with unfixed issues
• Start quality review before spec passes
• Move to next task with open issues

If issues found:

• Same implementer fixes them
• Reviewer reviews again
• Repeat until approved

Common Mistakes

• ❌ Skip spec review → ✅ Always verify spec first
• ❌ Skip quality review → ✅ Always check quality
• ❌ Wrong review order → ✅ Spec first, then quality
• ❌ Provide partial task text → ✅ Give full text