docs(01.1-05): complete server tests and events plan

Tasks completed: 2/2
- Write unit tests for CoordinationServer
- Add event emission to server and shutdown handler

SUMMARY: .planning/phases/01.1-hexagonal-architecture/01.1-05-SUMMARY.md

.planning/phases/01.1-hexagonal-architecture/01.1-05-SUMMARY.md

@@ -0,0 +1,101 @@
+---
+phase: 01.1-hexagonal-architecture
+plan: 05
+subsystem: server
+tags: [vitest, events, eventbus, server, shutdown, lifecycle, testing]
+
+# Dependency graph
+requires:
+  - phase: 01.1-01
+    provides: EventBus port interface and domain events (ServerStartedEvent, ServerStoppedEvent)
+provides:
+  - Comprehensive CoordinationServer test coverage
+  - Server lifecycle event emission
+  - GracefulShutdown test coverage
+affects: [01.1-06]
+
+# Tech tracking
+tech-stack:
+  added: []
+  patterns: [event-driven-lifecycle, optional-dependency-injection]
+
+key-files:
+  created:
+    - src/server/index.test.ts
+    - src/server/shutdown.test.ts
+  modified:
+    - src/server/index.ts
+
+key-decisions:
+  - "EventBus is optional parameter for backwards compatibility"
+  - "Events emitted before console.log in start(), before close in stop()"
+  - "Signal handler tests verify listener count increase rather than triggering signals"
+
+patterns-established:
+  - "Optional eventBus injection pattern for lifecycle events"
+  - "Mock creation helper functions for consistent test setup"
+
+# Metrics
+duration: 2min
+completed: 2026-01-30
+---
+
+# Phase 1.1 Plan 05: Server Tests and Events Summary
+
+**Comprehensive server test coverage with lifecycle event emission through EventBus for reactive coordination patterns**
+
+## Performance
+
+- **Duration:** 2 min
+- **Started:** 2026-01-30T13:01:10Z
+- **Completed:** 2026-01-30T13:03:38Z
+- **Tasks:** 2
+- **Files modified:** 3
+
+## Accomplishments
+
+- Comprehensive unit tests for CoordinationServer (lifecycle, HTTP endpoints, PID file management)
+- Server emits ServerStarted and ServerStopped events through optional EventBus
+- GracefulShutdown test coverage for shutdown() method and signal handler installation
+- 16 new server tests + 6 shutdown tests = 22 new tests total
+
+## Task Commits
+
+Each task was committed atomically:
+
+1. **Task 1: Write unit tests for CoordinationServer** - `ea79b3b` (test)
+2. **Task 2: Add event emission to server and shutdown handler** - `1f255ee` (feat)
+
+## Files Created/Modified
+
+- `src/server/index.test.ts` - CoordinationServer lifecycle, HTTP endpoint, PID file, and event emission tests
+- `src/server/shutdown.test.ts` - GracefulShutdown shutdown() and install() tests
+- `src/server/index.ts` - Added optional eventBus parameter, emit ServerStarted/ServerStopped events
+
+## Decisions Made
+
+1. **EventBus as optional parameter** - Maintains backwards compatibility while enabling event-driven patterns
+2. **Events emitted at specific lifecycle points** - ServerStarted after PID file written, ServerStopped before closing connections
+3. **Signal handler tests use listener count** - Safer than triggering actual signals which could affect test runner
+
+## Deviations from Plan
+
+None - plan executed exactly as written.
+
+## Issues Encountered
+
+None
+
+## User Setup Required
+
+None - no external service configuration required.
+
+## Next Phase Readiness
+
+- Server module fully tested with event emission
+- Event-driven lifecycle enables reactive patterns (dashboard updates, coordination)
+- Ready for 01.1-06: Final integration and phase completion
+
+---
+*Phase: 01.1-hexagonal-architecture*
+*Completed: 2026-01-30*