docs(01.1-04): complete logging module tests and events plan

Tasks completed: 2/2
- Write unit tests for LogManager and ProcessLogWriter
- Add event emission to ProcessLogWriter

SUMMARY: .planning/phases/01.1-hexagonal-architecture/01.1-04-SUMMARY.md

.planning/ROADMAP.md

@@ -134,7 +134,7 @@ Phases execute in numeric order: 1 → 1.1 → 2 → 3 → 4 → 5 → 6 → 7
 | Phase | Plans Complete | Status | Completed |
 |-------|----------------|--------|-----------|
 | 1. Core Infrastructure | 5/5 | Complete | 2026-01-30 |
-| 1.1. Hexagonal Architecture | 3/6 | In progress | - |
+| 1.1. Hexagonal Architecture | 4/6 | In progress | - |
 | 2. Data Layer | 0/? | Not started | - |
 | 3. Git Integration | 0/? | Not started | - |
 | 4. Agent Lifecycle | 0/? | Not started | - |

.planning/STATE.md

@@ -47,6 +47,7 @@ Recent decisions affecting current work:
 - 01-05: Used node:http instead of Express for minimal server footprint
 - 01.1-01: EventBus is PORT, EventEmitterBus is ADAPTER for swappability
 - 01.1-02: Zod for output validation, procedures match HTTP endpoint shapes
+- 01.1-03: Optional eventBus parameter for ProcessManager, events emitted synchronously
 - 01.1-04: EventBus is optional parameter for backwards compatibility in logging
 - 01.1-05: Optional eventBus injection for server lifecycle events
 

.planning/phases/01.1-hexagonal-architecture/01.1-04-SUMMARY.md

@@ -0,0 +1,106 @@
+---
+phase: 01.1-hexagonal-architecture
+plan: 04
+subsystem: logging
+tags: [vitest, events, logging, file-io, eventbus]
+
+# Dependency graph
+requires:
+  - phase: 01.1-01
+    provides: EventBus port interface, LogEntryEvent type
+provides:
+  - Comprehensive LogManager test coverage
+  - Comprehensive ProcessLogWriter test coverage
+  - Event emission for log entries (stdout/stderr)
+  - Real-time log streaming capability via EventBus
+affects: [01.1-05, 01.1-06, 07-FSUI]
+
+# Tech tracking
+tech-stack:
+  added: []
+  patterns: [event-driven-logging, optional-dependency-injection]
+
+key-files:
+  created:
+    - src/logging/manager.test.ts
+    - src/logging/writer.test.ts
+  modified:
+    - src/logging/writer.ts
+    - src/logging/index.ts
+
+key-decisions:
+  - "EventBus is optional parameter for backwards compatibility"
+  - "Events emitted after file write completes for consistency"
+  - "Buffer data converted to string for event payload"
+
+patterns-established:
+  - "Optional EventBus injection pattern for modules"
+  - "Log streaming via log:entry events"
+
+# Metrics
+duration: 4min
+completed: 2026-01-30
+---
+
+# Phase 1.1 Plan 04: Logging Module Tests + Events Summary
+
+**Comprehensive test coverage for LogManager and ProcessLogWriter with optional EventBus integration for real-time log streaming**
+
+## Performance
+
+- **Duration:** 4 min
+- **Started:** 2026-01-30T14:00:00Z
+- **Completed:** 2026-01-30T14:04:00Z
+- **Tasks:** 2
+- **Files modified:** 4
+
+## Accomplishments
+
+- 35 unit tests for LogManager covering directory operations, path resolution, log listing, and retention cleanup
+- 24 unit tests for ProcessLogWriter covering file operations, timestamps, append mode, and event emission
+- ProcessLogWriter accepts optional EventBus and emits log:entry events
+- createLogger convenience function updated to support EventBus parameter
+- Backwards compatible - eventBus parameter is optional
+
+## Task Commits
+
+Each task was committed atomically:
+
+1. **Task 1: Write unit tests for LogManager and ProcessLogWriter** - `17f4e61` (test)
+2. **Task 2: Add event emission to ProcessLogWriter** - `bac133d` (feat)
+
+## Files Created/Modified
+
+- `src/logging/manager.test.ts` - 17 tests for LogManager (directory creation, path resolution, log listing, cleanup)
+- `src/logging/writer.test.ts` - 24 tests for ProcessLogWriter (file ops, timestamps, events, compatibility)
+- `src/logging/writer.ts` - Added optional EventBus parameter, emits log:entry events on write
+- `src/logging/index.ts` - Updated createLogger to accept optional EventBus
+
+## Decisions Made
+
+1. **Optional EventBus parameter** - Maintains backwards compatibility while enabling event emission
+2. **Events emitted after file write** - Ensures file is written before event is emitted for consistency
+3. **Buffer converted to string for events** - Event payload uses string for easier consumption by UI/subscribers
+
+## Deviations from Plan
+
+None - plan executed exactly as written.
+
+## Issues Encountered
+
+None
+
+## User Setup Required
+
+None - no external service configuration required.
+
+## Next Phase Readiness
+
+- Logging module fully tested with 41 tests total
+- LogEntry events flow through event bus for real-time streaming
+- Ready for Phase 7 (FSUI) which will consume log events
+- Ready for 01.1-05: Server Module Tests + Events
+
+---
+*Phase: 01.1-hexagonal-architecture*
+*Completed: 2026-01-30*