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skills/implement-feature/references/phase-4-review.md

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+# Phase 4: REVIEW
+
+## Objective
+
+Verify implementation meets requirements and identify issues before testing.
+
+## Why This Exists
+
+Chico prevents: shipping bugs, missing requirements, code quality issues, testing broken code.
+
+## Protocol
+
+1. **Get user approval to consult Chico**
+   - Mark "Get user approval to consult Chico" as in_progress
+   - Ask: "May I consult Chico to review the implementation?"
+   - Wait for user confirmation
+   - Mark as completed only after user confirms
+
+2. **Consult Chico**
+   - Provide all code from Phase 3
+   - Reference to REQUIREMENTS.md
+   - Any specific concerns
+
+3. **Receive Chico's feedback**
+   - Requirements verification
+   - Bug identification
+   - Code quality improvements
+   - Edge cases
+   - **Chico adds todos for issues found** with [Chico] prefix
+
+   Trust his fresh perspective.
+
+4. **Fix issues one at a time** (do NOT batch)
+   ```
+   Issue 1: [description]
+   [Fix Issue 1]
+   "Issue 1 fixed. Proceed to Issue 2?"
+   [WAIT]
+   ```
+
+5. **If fixes were made: Ask about re-review**
+   ```
+   "Should I have Chico review the fixes?"
+   ```
+   Often warranted for multiple significant fixes or critical logic changes.
+
+6. **Do not claim completion until approved**
+
+7. **Complete Phase 4**
+   - Mark "Phase 4: Review with Chico" as completed
+   - Mark "Get user approval to consult Zeppo" as in_progress
+   - Ask: "May I consult Zeppo for testing strategy?"
+   - Wait for user confirmation
+
+## Critical Anti-Patterns
+
+**❌ "Skipping Chico because I'm confident"**
+
+Review is MANDATORY, not optional. Fresh eyes catch issues you miss. Chico verifies against requirements, not just bugs.
+
+**❌ "Testing before review"**
+
+Always REVIEW (Phase 4) before VERIFY (Phase 5). Don't waste time testing code that needs fixes.
+
+## Key Takeaways
+
+- Chico review is mandatory
+- Review before testing (always Phase 4 before Phase 5)
+- Fix issues one at a time with confirmation
+- Trust Chico's feedback
+- Re-review when needed