docs(02-02): complete repository layer plan

Tasks completed: 4/4
- Create repository port interfaces
- Create Drizzle repository adapters
- Write repository tests
- Update exports and test cascade deletes

SUMMARY: .planning/phases/02-data-layer/02-02-SUMMARY.md

.planning/STATE.md

@@ -10,18 +10,18 @@ See: .planning/PROJECT.md (updated 2026-01-30)
 ## Current Position
 
 Phase: 2 of 8 (Data Layer)
-Plan: 1 of ? in current phase
+Plan: 2 of ? in current phase
 Status: In progress
-Last activity: 2026-01-30 — Completed 02-01-PLAN.md
+Last activity: 2026-01-30 — Completed 02-02-PLAN.md
 
-Progress: ██████████████░░ 90%
+Progress: ██████████████░░ 92%
 
 ## Performance Metrics
 
 **Velocity:**
-- Total plans completed: 12
+- Total plans completed: 13
 - Average duration: 3 min
-- Total execution time: 33 min
+- Total execution time: 38 min
 
 **By Phase:**
 
@@ -29,10 +29,10 @@ Progress: ██████████████░░ 90%
 |-------|-------|-------|----------|
 | 1 | 5/5 | 15 min | 3 min |
 | 1.1 | 6/6 | 15 min | 3 min |
-| 2 | 1/? | 3 min | 3 min |
+| 2 | 2/? | 8 min | 4 min |
 
 **Recent Trend:**
-- Last 5 plans: 01.1-02 (6 min), 01.1-05 (2 min), 01.1-06 (4 min), 02-01 (3 min)
+- Last 5 plans: 01.1-05 (2 min), 01.1-06 (4 min), 02-01 (3 min), 02-02 (5 min)
 - Trend: Steady
 
 ## Accumulated Context
@@ -55,6 +55,9 @@ Recent decisions affecting current work:
 - 02-01: Factory function for database (not singleton) allows isolated test instances
 - 02-01: WAL mode enabled for better concurrent read performance
 - 02-01: Separate task_dependencies table for many-to-many task relationships
+- 02-02: Repository per aggregate (one interface/adapter per table)
+- 02-02: Port-adapter pattern for repositories (same as EventBus)
+- 02-02: Fetch after insert to ensure schema defaults applied
 
 ### Pending Todos
 
@@ -73,5 +76,5 @@ None yet.
 ## Session Continuity
 
 Last session: 2026-01-30
-Stopped at: Completed 02-01-PLAN.md (SQLite Database Setup)
+Stopped at: Completed 02-02-PLAN.md (Repository Layer)
 Resume file: None

.planning/phases/02-data-layer/02-02-SUMMARY.md

@@ -0,0 +1,140 @@
+---
+phase: 02-data-layer
+plan: 02
+subsystem: database
+tags: [drizzle, repository-pattern, hexagonal, sqlite, crud]
+
+# Dependency graph
+requires:
+  - phase: 02-01
+    provides: SQLite database with Drizzle ORM and task hierarchy schema
+provides:
+  - Repository port interfaces (Initiative, Phase, Plan, Task)
+  - Drizzle adapter implementations for all repositories
+  - In-memory test database helpers
+  - Cascade delete verification through repository layer
+affects: [03-git-integration, 04-agent-lifecycle, 05-task-dispatch]
+
+# Tech tracking
+tech-stack:
+  added: [nanoid]
+  patterns: [repository-pattern, port-adapter, dependency-injection]
+
+key-files:
+  created:
+    - src/db/repositories/initiative-repository.ts
+    - src/db/repositories/phase-repository.ts
+    - src/db/repositories/plan-repository.ts
+    - src/db/repositories/task-repository.ts
+    - src/db/repositories/index.ts
+    - src/db/repositories/drizzle/initiative.ts
+    - src/db/repositories/drizzle/phase.ts
+    - src/db/repositories/drizzle/plan.ts
+    - src/db/repositories/drizzle/task.ts
+    - src/db/repositories/drizzle/index.ts
+    - src/db/repositories/drizzle/test-helpers.ts
+    - src/db/repositories/drizzle/*.test.ts
+  modified:
+    - src/db/index.ts
+
+key-decisions:
+  - "Repository per aggregate: Each repository only knows about its own table"
+  - "Port-adapter pattern: Interfaces are ports, Drizzle implementations are adapters"
+  - "Fetch after insert: Adapters fetch inserted record to ensure all defaults applied"
+  - "In-memory testing: createTestDatabase helper with raw SQL schema setup"
+
+patterns-established:
+  - "Repository pattern: Separate interfaces from implementations"
+  - "DI for database: Adapters take DrizzleDatabase in constructor"
+  - "Test helpers: createTestDatabase() for isolated test instances"
+
+# Metrics
+duration: 5min
+completed: 2026-01-30
+---
+
+# Phase 2 Plan 2: Repository Layer Summary
+
+**Repository layer with separate port interfaces and Drizzle adapters per aggregate (Initiative, Phase, Plan, Task)**
+
+## Performance
+
+- **Duration:** 5 min
+- **Started:** 2026-01-30T18:06:00Z
+- **Completed:** 2026-01-30T18:11:44Z
+- **Tasks:** 4
+- **Files modified:** 17
+
+## Accomplishments
+
+- Created 4 repository port interfaces following hexagonal architecture
+- Implemented 4 Drizzle adapter classes with full CRUD operations
+- Added comprehensive test coverage (45 tests) including cascade delete verification
+- Updated src/db/index.ts to export all interfaces and adapters
+
+## Task Commits
+
+Each task was committed atomically:
+
+1. **Task 1: Create repository port interfaces** - `5e5bca3` (feat)
+2. **Task 2: Create Drizzle repository adapters** - `14e0f6f` (feat)
+3. **Task 3: Write repository tests** - `830aa4b` (test)
+4. **Task 4: Update exports and test cascade deletes** - `112cc23` (feat)
+
+## Files Created/Modified
+
+**Port Interfaces:**
+- `src/db/repositories/initiative-repository.ts` - InitiativeRepository interface + types
+- `src/db/repositories/phase-repository.ts` - PhaseRepository interface with findByInitiativeId
+- `src/db/repositories/plan-repository.ts` - PlanRepository interface with findByPhaseId
+- `src/db/repositories/task-repository.ts` - TaskRepository interface with findByPlanId
+- `src/db/repositories/index.ts` - Re-exports all interfaces
+
+**Drizzle Adapters:**
+- `src/db/repositories/drizzle/initiative.ts` - DrizzleInitiativeRepository
+- `src/db/repositories/drizzle/phase.ts` - DrizzlePhaseRepository (orders by number)
+- `src/db/repositories/drizzle/plan.ts` - DrizzlePlanRepository (orders by number)
+- `src/db/repositories/drizzle/task.ts` - DrizzleTaskRepository (orders by order field)
+- `src/db/repositories/drizzle/index.ts` - Re-exports all adapters
+
+**Tests:**
+- `src/db/repositories/drizzle/test-helpers.ts` - createTestDatabase with in-memory SQLite
+- `src/db/repositories/drizzle/initiative.test.ts` - 10 tests
+- `src/db/repositories/drizzle/phase.test.ts` - 10 tests
+- `src/db/repositories/drizzle/plan.test.ts` - 10 tests
+- `src/db/repositories/drizzle/task.test.ts` - 12 tests
+- `src/db/repositories/drizzle/cascade.test.ts` - 3 cascade delete tests
+
+**Updated:**
+- `src/db/index.ts` - Added repository interface and adapter exports
+
+## Decisions Made
+
+- **Repository per aggregate:** Each repository only knows its own table, maintaining clean DDD boundaries
+- **Port-adapter pattern:** Same pattern as EventBus from Phase 1.1 - interfaces are ports, implementations are adapters
+- **Fetch after insert:** Adapters fetch the inserted record to ensure defaults from schema are applied
+- **In-memory test setup:** createTestDatabase() uses raw SQL to create schema for in-memory tests
+
+## Deviations from Plan
+
+None - plan executed exactly as written.
+
+## Issues Encountered
+
+None.
+
+## User Setup Required
+
+None - no external service configuration required.
+
+## Next Phase Readiness
+
+- Repository layer complete with full CRUD operations
+- All repositories tested with 45 passing tests
+- Cascade deletes verified through repository layer
+- Ready for service layer implementation in future plans
+- No blockers for continuing
+
+---
+*Phase: 02-data-layer*
+*Completed: 2026-01-30*