docs(14-08): complete phase dispatch E2E tests plan

Tasks completed: 2/2
- Add phaseDispatchManager to TestHarness
- Create phase dispatch E2E tests

SUMMARY: .planning/phases/14-parallel-phase-execution/14-08-SUMMARY.md

.planning/phases/14-parallel-phase-execution/14-08-SUMMARY.md

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+---
+phase: 14-parallel-phase-execution
+plan: 08
+subsystem: testing
+tags: [e2e, vitest, phase-dispatch, dependencies]
+
+# Dependency graph
+requires:
+  - phase: 14-06
+    provides: CLI commands for phase dispatch
+  - phase: 14-04
+    provides: PhaseDispatchManager adapter implementation
+provides:
+  - E2E tests for parallel phase execution scenarios
+  - TestHarness integration with PhaseDispatchManager
+affects: [15-frontend-wireframes]
+
+# Tech tracking
+tech-stack:
+  added: []
+  patterns:
+    - Phase dispatch testing via TestHarness (same pattern as task dispatch)
+    - Diamond dependency pattern testing for phase graph
+
+key-files:
+  created:
+    - src/test/e2e/phase-dispatch.test.ts
+  modified:
+    - src/test/harness.ts
+
+key-decisions:
+  - "PhaseDispatchManager wired into TestHarness following DispatchManager pattern"
+  - "E2E tests cover 4 core scenarios: independent, sequential, diamond, blocked"
+
+patterns-established:
+  - "Phase E2E tests mirror task E2E test structure"
+  - "Diamond dependency pattern validation (A -> B,C -> D)"
+
+# Metrics
+duration: 3min
+completed: 2026-02-02
+---
+
+# Phase 14 Plan 08: E2E Tests for Phase Dispatch Summary
+
+**E2E tests for parallel phase execution with dependency ordering, covering independent dispatch, sequential dependencies, diamond patterns, and blocked phases**
+
+## Performance
+
+- **Duration:** 3 min
+- **Started:** 2026-02-02T13:47:00Z
+- **Completed:** 2026-02-02T13:50:00Z
+- **Tasks:** 2
+- **Files modified:** 2
+
+## Accomplishments
+
+- Added phaseDispatchManager to TestHarness wired with phaseRepository and eventBus
+- Created 5 E2E tests covering parallel phase execution scenarios
+- Verified independent phases dispatch in parallel
+- Verified dependent phases wait for prerequisites
+- Verified diamond dependency pattern (A -> B,C -> D)
+- Verified blocked phases prevent dispatch and propagate down chain
+
+## Task Commits
+
+Each task was committed atomically:
+
+1. **Task 2: Add phaseDispatchManager to TestHarness** - `38ee2d1` (feat)
+2. **Task 1: Create phase dispatch E2E tests** - `03fefd8` (test)
+
+## Files Created/Modified
+
+- `src/test/harness.ts` - Added phaseDispatchManager property and wiring
+- `src/test/e2e/phase-dispatch.test.ts` - New E2E test file with 5 tests
+
+## Decisions Made
+
+- PhaseDispatchManager added to TestHarness following exact pattern of DispatchManager
+- E2E tests use direct repository/manager calls rather than fixtures (phases created inline for clarity)
+
+## Deviations from Plan
+
+None - plan executed exactly as written.
+
+## Issues Encountered
+
+None.
+
+## User Setup Required
+
+None - no external service configuration required.
+
+## Verification
+
+- [x] `npm run build` succeeds without errors
+- [x] `npm test` passes all 452 tests (including 5 new E2E tests)
+- [x] E2E tests verify actual parallel behavior
+
+## Next Phase Readiness
+
+- Phase 14 parallel execution complete
+- All E2E tests pass
+- Ready for Phase 15 (Frontend Wireframes)
+
+---
+*Phase: 14-parallel-phase-execution*
+*Completed: 2026-02-02*