docs(01-03): complete database & tests plan

Tasks completed: 3/3
- Create database module with async session management
- Create model tests with in-memory database
- Verify gitignore and full test suite

SUMMARY: .planning/phases/01-foundation/01-03-SUMMARY.md

Phase 1: Foundation complete (3/3 plans)

.planning/ROADMAP.md

@@ -14,7 +14,7 @@ None
 - Integer phases (1, 2, 3): Planned milestone work
 - Decimal phases (2.1, 2.2): Urgent insertions (marked with INSERTED)
 
-- [ ] **Phase 1: Foundation** - Project scaffolding, tooling, database models
+- [x] **Phase 1: Foundation** - Project scaffolding, tooling, database models
 - [ ] **Phase 2: Bot Core** - Telegram bot setup, /help, /status (M1)
 - [ ] **Phase 3: Project CRUD** - Project management commands (M2)
 - [ ] **Phase 4: Single Model Q&A** - AI client abstraction, basic queries (M3)
@@ -23,11 +23,12 @@ None
 
 ## Phase Details
 
-### Phase 1: Foundation
+### Phase 1: Foundation ✓
 **Goal**: Complete project scaffolding with pyproject.toml, ruff, pre-commit, src layout, and SQLAlchemy models
 **Depends on**: Nothing (first phase)
 **Research**: Unlikely (established patterns)
-**Plans**: TBD
+**Plans**: 3 (01-01 scaffolding, 01-02 models, 01-03 database & tests)
+**Completed**: 2026-01-16
 
 ### Phase 2: Bot Core
 **Goal**: Working Telegram bot responding to /help and /status commands
@@ -68,7 +69,7 @@ Phases execute in numeric order: 1 → 2 → 3 → 4 → 5 → 6
 
 | Phase | Plans Complete | Status | Completed |
 |-------|----------------|--------|-----------|
-| 1. Foundation | 2/TBD | In progress | - |
+| 1. Foundation | 3/3 | Complete | 2026-01-16 |
 | 2. Bot Core | 0/TBD | Not started | - |
 | 3. Project CRUD | 0/TBD | Not started | - |
 | 4. Single Model Q&A | 0/TBD | Not started | - |

.planning/STATE.md

@@ -10,27 +10,27 @@ See: .planning/PROJECT.md (updated 2026-01-16)
 ## Current Position
 
 Phase: 1 of 6 (Foundation)
-Plan: 2 of TBD complete
+Plan: 3 of 3 complete
-Status: In progress
+Status: Phase complete
-Last activity: 2026-01-16 — Completed 01-02-PLAN.md (database models)
+Last activity: 2026-01-16 — Completed 01-03-PLAN.md (database & tests)
 
-Progress: ██░░░░░░░░ ~15%
+Progress: █░░░░░░░░░ ~17%
 
 ## Performance Metrics
 
 **Velocity:**
-- Total plans completed: 2
+- Total plans completed: 3
-- Average duration: 5.5 min
+- Average duration: 5 min
-- Total execution time: 0.18 hours
+- Total execution time: 0.25 hours
 
 **By Phase:**
 
 | Phase | Plans | Total | Avg/Plan |
 |-------|-------|-------|----------|
-| 01-foundation | 2 | 11 min | 5.5 min |
+| 01-foundation | 3 | 15 min | 5 min |
 
 **Recent Trend:**
-- Last 5 plans: 01-01 (8 min), 01-02 (3 min)
+- Last 5 plans: 01-01 (8 min), 01-02 (3 min), 01-03 (4 min)
 - Trend: Fast
 
 ## Accumulated Context
@@ -44,6 +44,8 @@ Recent decisions affecting current work:
 - **01-01:** ruff-pre-commit v0.14.13 with --fix for auto-corrections
 - **01-02:** String(36) for UUID storage (SQLite compatibility)
 - **01-02:** JSON type for list/dict fields (no ARRAY for SQLite)
+- **01-03:** expire_on_commit=False for async session usability
+- **01-03:** Module-level globals for engine/session factory (simple singleton)
 
 ### Deferred Issues
 
@@ -55,6 +57,6 @@ None yet.
 
 ## Session Continuity
 
-Last session: 2026-01-16T15:09:42Z
+Last session: 2026-01-16T15:17:06Z
-Stopped at: Completed 01-02-PLAN.md (database models)
+Stopped at: Completed Phase 1 (Foundation) — 3/3 plans done
 Resume file: None

.planning/phases/01-foundation/01-03-SUMMARY.md

@@ -0,0 +1,106 @@
+---
+phase: 01-foundation
+plan: 03
+subsystem: database
+tags: [sqlalchemy, async, aiosqlite, pytest, testing]
+
+# Dependency graph
+requires:
+  - phase: 01-foundation/01-02
+    provides: SQLAlchemy models (Project, Discussion, Round, Message, Consensus)
+provides:
+  - Async database session management (init_db, create_tables, get_session, close_db)
+  - In-memory database testing pattern
+  - Model test coverage (5 tests)
+affects: [02-bot-core, 03-discussion-engine]
+
+# Tech tracking
+tech-stack:
+  added: [sqlalchemy.ext.asyncio, aiosqlite]
+  patterns: [async context manager for sessions, in-memory SQLite for tests]
+
+key-files:
+  created:
+    - src/moai/core/database.py
+    - tests/test_models.py
+
+key-decisions:
+  - "Session auto-commits on context exit, rollback on exception"
+  - "Module-level globals for engine/session factory (simple singleton pattern)"
+  - "expire_on_commit=False for async session usability"
+
+patterns-established:
+  - "Database fixture pattern: init_db with in-memory URL, create_tables, yield session, close_db"
+  - "Relationship testing via refresh() for lazy-loaded collections"
+
+issues-created: []
+
+# Metrics
+duration: 4min
+completed: 2026-01-16
+---
+
+# Phase 01-03: Database & Tests Summary
+
+**Async SQLAlchemy session management with in-memory test fixture and 5 model tests at 95% coverage**
+
+## Performance
+
+- **Duration:** 4 min
+- **Started:** 2026-01-16T15:13:19Z
+- **Completed:** 2026-01-16T15:17:06Z
+- **Tasks:** 3 (2 with commits, 1 verification-only)
+- **Files modified:** 2
+
+## Accomplishments
+- Created database.py with async session factory and context manager
+- Implemented 5 comprehensive model tests covering creation, relationships, and cascades
+- Achieved 95% code coverage on core module
+
+## Task Commits
+
+Each task was committed atomically:
+
+1. **Task 1: Create database module** - `bb932e6` (feat)
+2. **Task 2: Create model tests** - `fb81fea` (test)
+3. **Task 3: Verify gitignore and test suite** - No commit needed (entries already present)
+
+## Files Created/Modified
+- `src/moai/core/database.py` - Async session management with init_db, create_tables, get_session, close_db
+- `tests/test_models.py` - 5 tests: create_project, create_discussion_with_project, create_full_discussion_chain, create_consensus, project_cascade_delete
+
+## Decisions Made
+- Used `expire_on_commit=False` in session factory to allow attribute access after commit without re-query
+- Session context manager handles commit/rollback automatically
+- Module-level globals for engine/factory simplifies dependency injection for this Phase 1 scope
+
+## Deviations from Plan
+
+None - plan executed exactly as written.
+
+**Note:** Task 3 required no commit because `.gitignore` already contained all specified entries from a previous setup phase.
+
+## Issues Encountered
+None
+
+## Test Results
+
+```
+tests/test_models.py::test_create_project PASSED
+tests/test_models.py::test_create_discussion_with_project PASSED
+tests/test_models.py::test_create_full_discussion_chain PASSED
+tests/test_models.py::test_create_consensus PASSED
+tests/test_models.py::test_project_cascade_delete PASSED
+
+Coverage: 95% (101 statements, 5 missing)
+Missing: error handling paths in database.py (lines 62, 85, 91-93)
+```
+
+## Next Phase Readiness
+- Foundation phase complete: scaffolding, models, database all working
+- Ready for Phase 2: Bot Core (handlers, middleware, bot setup)
+- All core infrastructure tested and operational
+
+---
+*Phase: 01-foundation*
+*Completed: 2026-01-16*