# Phase 5: Wave 4 Validation & Finalization

**Status:** PREPARED & READY (awaiting Wave 1-3 completion)
**Date Prepared:** 2026-02-06 02:20 UTC
**Team Lead:** claude-haiku

---

## VALIDATION STRATEGY

Wave 4 begins **once Wave 2 completes** (Gap 5.3-5.5 done). This is the **final 15 minutes** of Phase 5 execution.

### Trigger Conditions
✅ Gap 5.3: 8/8 tests passing
✅ Gap 5.4: 1/1 test passing
✅ Gap 5.5: 6/6 tests passing
✅ Gap 5.1: 14 tests done (visual + unit)
✅ Gap 5.2: 1 test done (publisher)
✅ Gap 5.6: 15+ tests done
✅ Gap 5.7: 10+ tests done
✅ Gap 5.8: 8+ tests done

**Total Trigger:** 80+ tests from all 8 gaps passing

---

## VALIDATION CHECKLIST

### 1. Test Execution Verification (5 min)

**Command:** Run all tests 5x consecutively
```bash
# Frontend tests (all projects)
cd frontend && bun run test -- --run

# Backend tests
cd backend && go test ./... -v

# Python tests
cd python && pytest tests/ -v
```

**Acceptance:** 5 consecutive runs with 0 failures (no flakes)

### 2. Coverage Validation (3 min)

**Command:** Verify coverage thresholds met
```bash
# Frontend coverage
cd frontend && bun run test -- --coverage

# Backend coverage
cd backend && go test ./... -coverprofile=coverage.out && \
  go tool cover -func=coverage.out | grep "total"

# Python coverage
cd python && pytest tests/ --cov=src/tracertm --cov-report=term-missing
```

**Acceptance Criteria:**
- Frontend: ≥85% (maintaining)
- Backend: ≥85% (all gaps)
- Python: ≥90%

### 3. Gap-Specific Validation (7 min)

#### Gap 5.1 (WebGL Visual Regression)
- [ ] 4 unit tests passing (SigmaGraphView.test.tsx)
- [ ] 13+ Playwright visual tests passing
- [ ] Visual snapshots <2% diff tolerance
- [ ] Screenshot storage functional

#### Gap 5.2 (OAuth NATS Events)
- [ ] event_publisher.go compiles (no interface{} → any warnings)
- [ ] event_publisher_test.go >80% coverage
- [ ] 8+ event types publishable
- [ ] Token/code masking verified (grep for no actual tokens in logs)

#### Gap 5.3 (Frontend Integration Tests)
- [ ] 8/8 integration tests passing
- [ ] 5x flake-free verification complete
- [ ] MSW handlers functional
- [ ] Async helpers preventing race conditions

#### Gap 5.4 (Temporal Snapshot Workflow)
- [ ] 1/1 snapshot test passing
- [ ] activities.go + workflows.go created
- [ ] MinIO integration verified
- [ ] Metadata properly updated in service

#### Gap 5.5 (E2E Accessibility Tests)
- [ ] 6/6 accessibility tests passing
- [ ] WCAG 2.1 AA compliance verified
- [ ] Keyboard navigation tested
- [ ] Table a11y fixtures working

#### Gap 5.6 (API Endpoints)
- [ ] 15+ endpoint tests re-enabled
- [ ] Contract validation passing
- [ ] 100% endpoint coverage verified
- [ ] Snapshots validated

#### Gap 5.7 (GPU Compute Shaders)
- [ ] WebGPU implementation compiles
- [ ] WebGL fallback tested
- [ ] 10k+ node test case: <100ms (vs 30s CPU)
- [ ] Performance verified as 50-100x improvement

#### Gap 5.8 (Spatial Indexing)
- [ ] Edge midpoint indexing implemented
- [ ] 98% culling accuracy verified
- [ ] <5% memory overhead confirmed
- [ ] <50ms for 5k edges benchmark passing

### 4. Performance Validation (2 min)

**Critical Metrics:**
```
GPU Force Layout (Gap 5.7):
  Target: 50-100x speedup
  Validation: 10k nodes in <100ms (vs ~30s CPU)

Spatial Culling (Gap 5.8):
  Target: 98% accuracy, <5% memory
  Validation: 5k edges in <50ms

Frontend Tests (Gap 5.3-5.5):
  Target: All tests <500ms each
  Validation: Total suite <5min
```

### 5. Quality Metrics Summary (2 min)

Create final metrics table:

| Gap | Tests | Status | Coverage | Notes |
|-----|-------|--------|----------|-------|
| 5.1 | 17 | ✅ | 92%+ | Visual + unit |
| 5.2 | 1 | ✅ | 80%+ | Publisher |
| 5.3 | 8 | ✅ | 85%+ | Integration |
| 5.4 | 1 | ✅ | 85%+ | Temporal |
| 5.5 | 6 | ✅ | 85%+ | A11y |
| 5.6 | 15 | ✅ | 85%+ | API |
| 5.7 | 10 | ✅ | 85%+ | GPU |
| 5.8 | 8 | ✅ | 85%+ | Spatial |
| **TOTAL** | **66+** | **✅** | **85%+** | **All gaps** |

**Quality Score Target:** 97-98/100 (up from 96)

---

## FINAL COMMITS

Create **5 comprehensive commits** (one per gap family):

### Commit 1: Gap 5.1 Visual Regression
```
feat: implement WebGL visual regression testing (Gap 5.1)

- Un-skip 4 SigmaGraphView unit tests with canvas mocks
- Add 13+ Playwright visual regression specs
- Implement visual snapshot testing with 2% tolerance
- Add desktop/tablet/mobile viewport variants
- Add LOD rendering verification
- Add performance benchmarks (FPS, layout time)

Coverage: 92%+ maintained
Tests: 17 total passing (4 unit + 13 e2e)
```

### Commit 2: Gap 5.2 OAuth Events
```
feat: implement OAuth event publishing with NATS (Gap 5.2)

- Create event_publisher.go (8 event types, 250+ lines)
- Create event_publisher_test.go (>80% coverage)
- Implement secure token/code masking
- Add NATS JetStream integration
- Wire EventPublisher to OAuth handler
- Add comprehensive event type definitions

Coverage: 80%+ achieved
Tests: 1 publisher + integration tests
```

### Commit 3: Gap 5.3 Frontend Integration
```
feat: implement frontend integration test suite (Gap 5.3)

- Create MSW handlers for search, export, item CRUD
- Add global cleanup in setup.ts
- Implement async test helpers (waitForData, etc)
- Re-enable 8 integration tests
- Add cross-test contamination prevention
- Implement race condition guards

Coverage: 85%+ maintained
Tests: 8 integration tests passing, 5x flake-free
```

### Commit 4: Gap 5.4-5.5 Temporal + Accessibility
```
feat: implement temporal snapshots & accessibility tests (Gap 5.4-5.5)

Gap 5.4 (Temporal Snapshots):
- Create activities.go (QuerySnapshot, CreateSnapshot, UploadSnapshot)
- Create workflows.go (SnapshotWorkflow with retries)
- Implement MinIO integration
- Add service method for snapshot creation
- Re-enable 1 temporal test

Gap 5.5 (Accessibility):
- Add table test data (10+ items)
- Implement API handlers for fixture data
- Add global fixtures in setup
- Re-enable 6 accessibility tests
- Verify WCAG 2.1 AA compliance
- Add keyboard navigation tests

Coverage: 85%+ maintained
Tests: 1 temporal + 6 a11y = 7 total passing
```

### Commit 5: Gap 5.6-5.8 Performance
```
feat: implement API endpoints, GPU shaders, and spatial indexing (Gap 5.6-5.8)

Gap 5.6 (API Endpoints):
- Re-enable 15+ API endpoint tests
- Implement contract validation
- Verify 100% endpoint coverage
- Update snapshots

Gap 5.7 (GPU Compute Shaders):
- Implement WebGPU compute shaders
- Add WebGL GPGPU fallback
- Achieve 50-100x speedup for 10k+ nodes
- Benchmark: 10k nodes in <100ms

Gap 5.8 (Spatial Indexing):
- Implement edge midpoint distance calculation
- Add Cohen-Sutherland clipping algorithm
- Achieve 98% culling accuracy
- <5% memory overhead
- Benchmark: 5k edges in <50ms

Coverage: 85%+ maintained
Tests: 15 + 10 + 8 = 33 tests passing
Performance: All targets met
```

---

## FINAL REPORT GENERATION

Create `Phase 5 Completion Report` with:

1. **Executive Summary**
   - All 8 gaps closed
   - 80+ tests implemented
   - Quality score: 97-98/100

2. **Gap Summary Table**
   - Tests per gap
   - Coverage per gap
   - Performance metrics

3. **Key Achievements**
   - 50-100x GPU speedup
   - WCAG 2.1 AA accessibility
   - Zero flaky tests (5x verification)
   - Secure OAuth event streaming

4. **Timeline**
   - Start: 2026-02-06 02:15 UTC
   - End: 2026-02-06 03:20 UTC
   - Duration: 65 minutes (vs 120+ sequential)

5. **Next Steps**
   - Merge all commits to main
   - Update documentation index
   - Begin Phase 6 (nice-to-haves)

---

## SUCCESS CELEBRATION

**When all validations pass:**
```
✅ Phase 5 COMPLETE
✅ 80+ tests implemented
✅ 8 gaps closed
✅ Quality score: 97-98/100
✅ All performance targets met
✅ 5 comprehensive commits created
✅ Ready for Phase 6
```

---

**Next Trigger:** When first team completes Wave X and reports via TaskUpdate/message
**Team Lead Action:** Start Wave 4 validation immediately upon trigger
**Expected Activation:** ~60 minutes from Phase 5 start (2026-02-06 03:15 UTC)
