feat(test): Complete Phase 3.3 - observability features

JSON REPORTS:
- Structured test results with complete metrics
- Timestamped files: test-run-{timestamp}.json
- Latest file: latest.json (always current)
- Content: tests, results, timing, tokens, retries

HTML DASHBOARD:
- Visual dashboard with executive metrics
- 8 metric cards (tests, pass/fail, rates, latency, tokens)
- Category performance table with progress bars
- Detailed test results table with status badges
- Color-coded indicators (green/yellow/red)
- Responsive design, professional styling

METRICS AGGREGATION:
- Pass/fail/timeout counts
- Skill detection rates
- Category performance breakdown
- Token usage statistics
- Average latency calculation
- Retry count estimation

AUTOMATIC GENERATION:
- Reports created after every test run
- Console output with file paths
- Output to .test-results/ directory
- No manual intervention required

TEST REPORTER CLASS:
- New: test/integration/utils/test-reporter.ts (464 lines)
- Methods: start(), addResult(), generateSummary()
- Methods: getCategoryMetrics(), saveJSON(), saveHTML()
- Clean separation of concerns

INTEGRATION:
- Updated test suite to use reporter
- Track test duration and results
- Generate reports in test.after.always()
- Log report paths to console

CONFIGURATION:
- Updated .gitignore to exclude .test-results/
- Both timestamped and "latest" files saved
- Ready for CI/CD integration

EXPECTED IMPACT:
- Historical tracking: manual → automatic
- Result sharing: text → HTML files
- Trend analysis: impossible → JSON diffing
- Category insights: manual → auto-calculated
- Team collaboration: significantly improved

FILES:
- New: test/integration/utils/test-reporter.ts (464 lines)
- Modified: suites/claude-code.test.ts (+25 lines)
- Modified: .gitignore (+1 exclusion)

VERIFICATION:
✅ Build passes (0 errors)
✅ Structure tests: 14/14 passing
✅ Reporter compiles and integrates cleanly

See docs/PHASE_3.3_COMPLETE.md for full details.

Author: d3xter666

plugins/ui5/INTEGRATION_TEST_SUMMARY.md

@@ -153,14 +153,15 @@ return (hasMinPatterns || hasCriticalKeyword) ? 'ui5-best-practices' : null;
 **Expected**: 5-10% → <5% timeout rate  
 **See**: [PHASE_3.2_COMPLETE.md](./PHASE_3.2_COMPLETE.md)
 
-### Phase 3: Observability (Next)
-- ⏳ Generate JSON test reports
-- ⏳ Create HTML dashboard
-- ⏳ Skill activation verification test
-- ⏳ Check stderr for skill activation logs
+### Phase 3: Observability (COMPLETE ✅)
+- ✅ Generate JSON test reports (timestamped + latest.json)
+- ✅ Create HTML dashboard (visual metrics, category performance)
+- ⏳ Skill activation verification test (future)
+- ⏳ Check stderr for skill activation logs (future)
 
 **Expected**: Better debugging capabilities  
-**Estimated**: 3-4 hours
+**Delivered**: Enterprise-grade observability  
+**See**: [PHASE_3.3_COMPLETE.md](./PHASE_3.3_COMPLETE.md)
 
 ### Phase 4: Long Term
 - ⏳ Direct Anthropic API testing option