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Author SHA1 Message Date
fbcd2bbb8e feat(01-02): set up PostgreSQL with Docker and async session factory
- Add docker-compose.yml with PostgreSQL 16 container (port 5433)
- Create async database session factory with connection pooling
- Configure SQLAlchemy 2.0 DeclarativeBase for models
- Update .env.example with correct database URL

Connection pool settings from research: pool_size=10, max_overflow=20,
pool_recycle=1800 (30 min), pool_pre_ping=True for validation.
2026-01-25 20:10:18 +00:00