# Code Review Summary

**PR**: #44
**Branch**: fix/timing-based-test-waits → main
**Date**: 2025-12-28 22:51
**Audits Run**: 6

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## 🚦 Merge Recommendation: ✅ APPROVED

All 6 reviews approved the changes. The PR improves test reliability by replacing non-deterministic `setTimeout` waits with deterministic event-driven synchronization.

### Reasoning

1. **No production code issues** - The only production change is adding `resourceMonitor` DI option to bootstrap.ts, which follows existing patterns
2. **Test infrastructure improvements** - Replaces ~60 timing-based waits with `flushEventLoop()`
3. **Issues are test-only** - Memory leaks found in test utilities don't affect production
4. **All tests pass** - 726 tests passing

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## 📊 Issues Summary

| Category | Critical | High | Medium | Low | Total |
|----------|----------|------|--------|-----|-------|
| 🔴 Blocking (Your Changes) | 0 | 0 | 0 | 0 | 0 |
| ⚠️ Should-Fix (Test Utilities) | 0 | 0 | 3 | 2 | 5 |
| ℹ️ Pre-existing | 0 | 0 | 5 | 0 | 5 |

## 💬 PR Comments

- **Created**: 2 (Architecture + Performance reviews)
- **Skipped**: 4 (issues documented in reports)

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## 🔴 Blocking Issues

**None.** All reviewers approved.

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## ⚠️ Should-Fix Issues (Test Utilities Only)

These issues are in `tests/fixtures/test-doubles.ts` and don't affect production:

| Issue | Severity | Location | Description |
|-------|----------|----------|-------------|
| `waitFor()` leaks on timeout | MEDIUM | Lines 219-232 | Handler never unsubscribed on timeout |
| `once()` never unsubscribes | MEDIUM | Lines 250-258 | Handler wrapper stays in Map after call |
| `removeListener()` broken | MEDIUM | Lines 264-270 | Can't remove wrapped handlers |
| Handler not cleaned on success | LOW | Lines 224-231 | Handler remains after resolve |
| Wrapper tracking missing | LOW | Lines 250-258 | No mapping for removeListener |

**Impact**: Memory accumulates during test runs. Cleaned up on process exit.

**Recommendation**: Fix in follow-up PR for test reliability in watch mode.

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## 📁 Audit Reports

| Audit | Score | Issues | Recommendation |
|-------|-------|--------|----------------|
| [Security](./security-report.2025-12-28_2251.md) | 10/10 | 0 | APPROVED |
| [Performance](./performance-report.2025-12-28_2251.md) | 9/10 | 2 | APPROVED |
| [Architecture](./architecture-report.2025-12-28_2251.md) | 7/10 | 3 | APPROVED WITH CONDITIONS |
| [Complexity](./complexity-report.2025-12-28_2251.md) | 8/10 | 3 | APPROVED |
| [Tests](./tests-report.2025-12-28_2251.md) | 9/10 | 1 | APPROVED |
| [TypeScript](./typescript-report.2025-12-28_2251.md) | 9/10 | 0 | APPROVED |

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## 🎯 Action Plan

### Before Merge (Required)

None - all reviews approved.

### After Merge (Recommended)

1. **Create follow-up issue** for test utility memory leaks
   - Fix `waitFor()` to unsubscribe on timeout
   - Fix `once()` to unsubscribe after call
   - Fix `removeListener()` to use subscription ID mapping

### Technical Debt (Noted)

5 pre-existing TypeScript issues identified (wrong imports, missing interface methods) - tracked separately.

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## 📈 Improvements Made

This PR delivers:

| Metric | Before | After |
|--------|--------|-------|
| setTimeout waits | ~60 | ~6 (intentional timing tests only) |
| Test determinism | Flaky | Deterministic |
| Test speed | ~8s | ~2-4s (estimated 6s saved) |
| Flakiness risk | HIGH | LOW |

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