docs(05-04): complete DispatchManager adapter plan

Tasks completed: 3/3
- Implement dependency checking algorithm
- Implement dispatchNext and queue state
- Add tests and wire up exports

SUMMARY: .planning/phases/05-task-dispatch/05-04-SUMMARY.md

.planning/STATE.md

@@ -10,18 +10,18 @@ See: .planning/PROJECT.md (updated 2026-01-30)
 ## Current Position
 
 Phase: 5 of 8 (Task Dispatch)
-Plan: 3 of 5 in current phase (05-01, 05-02, 05-03 complete)
+Plan: 4 of 5 in current phase (05-01, 05-02, 05-03, 05-04 complete)
 Status: In progress
-Last activity: 2026-01-30 — Completed 05-01-PLAN.md
+Last activity: 2026-01-30 — Completed 05-04-PLAN.md
 
-Progress: ████████░░ 84%
+Progress: ████████░░ 88%
 
 ## Performance Metrics
 
 **Velocity:**
-- Total plans completed: 22
+- Total plans completed: 23
 - Average duration: 3 min
-- Total execution time: 67 min
+- Total execution time: 71 min
 
 **By Phase:**
 
@@ -32,10 +32,10 @@ Progress: ████████░░ 84%
 | 2 | 2/2 | 8 min | 4 min |
 | 3 | 2/2 | 7 min | 4 min |
 | 4 | 4/4 | 12 min | 3 min |
-| 5 | 3/5 | 10 min | 3 min |
+| 5 | 4/5 | 14 min | 4 min |
 
 **Recent Trend:**
-- Last 5 plans: 04-04 (3 min), 05-03 (3 min), 05-02 (3 min), 05-01 (4 min)
+- Last 5 plans: 05-04 (4 min), 05-03 (3 min), 05-02 (3 min), 05-01 (4 min)
 - Trend: Steady
 
 ## Accumulated Context
@@ -88,6 +88,9 @@ Recent decisions affecting current work:
 - 05-01: Sender/recipient pattern with type enum and nullable ID for agent-user communication
 - 05-01: requiresResponse boolean for distinguishing questions from notifications
 - 05-01: Self-referential parentMessageId for response threading
+- 05-04: In-memory Map for task queue (persistent queue not needed for v1)
+- 05-04: Dependency checking via taskRepository.findById status check
+- 05-04: Agent name generated from taskId prefix
 
 ### Pending Todos
 
@@ -106,5 +109,5 @@ None yet.
 ## Session Continuity
 
 Last session: 2026-01-30
-Stopped at: Completed 05-01-PLAN.md — Message Schema & Repository
+Stopped at: Completed 05-04-PLAN.md — DispatchManager Adapter
 Resume file: None

.planning/phases/05-task-dispatch/05-04-SUMMARY.md

@@ -0,0 +1,111 @@
+---
+phase: 05-task-dispatch
+plan: 04
+subsystem: dispatch
+tags: [dispatch, queue, events, dependency, hexagonal]
+
+# Dependency graph
+requires:
+  - phase: 05-01
+    provides: MessageRepository for agent-user communication
+  - phase: 05-03
+    provides: DispatchManager port interface
+provides:
+  - DefaultDispatchManager adapter implementation
+  - In-memory task queue with priority ordering
+  - Dependency-checking dispatch algorithm
+  - Task lifecycle event emission
+affects: [05-05]
+
+# Tech tracking
+tech-stack:
+  added: []
+  patterns:
+    - "In-memory queue for task dispatch management"
+    - "Priority-first, FIFO-secondary ordering"
+    - "Port-adapter pattern for DispatchManager"
+
+key-files:
+  created:
+    - src/dispatch/manager.ts
+    - src/dispatch/manager.test.ts
+  modified:
+    - src/dispatch/index.ts
+
+key-decisions:
+  - "In-memory Map for queue (no persistent queue needed for v1)"
+  - "Dependency checking via taskRepository.findById status check"
+  - "Agent name generated from taskId prefix"
+
+patterns-established:
+  - "Task dispatch via priority then FIFO ordering"
+  - "Event emission for all task state transitions"
+
+# Metrics
+duration: 4min
+completed: 2026-01-30
+---
+
+# Phase 5 Plan 04: DispatchManager Adapter Summary
+
+**DefaultDispatchManager adapter with dependency checking, priority-ordered dispatch, and 14 comprehensive tests**
+
+## Performance
+
+- **Duration:** 4 min
+- **Started:** 2026-01-30T20:38:00Z
+- **Completed:** 2026-01-30T20:43:00Z
+- **Tasks:** 3
+- **Files modified:** 3
+
+## Accomplishments
+
+- Implemented DefaultDispatchManager adapter implementing DispatchManager interface
+- Built in-memory task queue with priority (high > medium > low) and FIFO ordering
+- Implemented dependency checking algorithm for dispatch readiness
+- Added all four task lifecycle events (queued, dispatched, completed, blocked)
+- Created 14 comprehensive tests covering all dispatch scenarios
+
+## Task Commits
+
+Each task was committed atomically:
+
+1. **Task 1: Implement dependency checking algorithm** - `e924fb6` (feat)
+2. **Task 2: Implement dispatchNext and queue state** - `e924fb6` (included in Task 1 - single file implementation)
+3. **Task 3: Add tests and wire up exports** - `364ffc3` (test)
+
+## Files Created/Modified
+
+- `src/dispatch/manager.ts` - DefaultDispatchManager implementation with queue management
+- `src/dispatch/manager.test.ts` - 14 tests for queue, dispatch, and dependency scenarios
+- `src/dispatch/index.ts` - Export DefaultDispatchManager from dispatch module
+
+## Decisions Made
+
+1. **In-memory Map for queue**: Simple Map-based queue is sufficient for v1. Persistent queue can be added later if needed.
+2. **Dependency checking via repository**: Check task status via taskRepository.findById rather than maintaining separate state.
+3. **Agent name from taskId**: Generate agent names like `agent-{taskId.slice(0,6)}` for simple identification.
+4. **Tasks 1 & 2 combined**: dispatchNext and queue state are tightly coupled to the core algorithm, implemented in single file.
+
+## Deviations from Plan
+
+None - plan executed exactly as written.
+
+## Issues Encountered
+
+None
+
+## User Setup Required
+
+None - no external service configuration required.
+
+## Next Phase Readiness
+
+- DefaultDispatchManager ready for integration with server and CLI
+- All dispatch events available for coordination workflows
+- Queue state visibility enables dispatch monitoring
+- Ready for 05-05 (Message & Dispatch CLI commands)
+
+---
+*Phase: 05-task-dispatch*
+*Completed: 2026-01-30*