feat(backend): FastAPI + libSQL + auth register/login/me + tests (TDD)
- FastAPI app with lifespan, CORS, health endpoint
- SQLAlchemy 2.0 async with aiosqlite, Base/UUIDMixin/TenantMixin/TimestampMixin
- Tenant and User models with multi-tenant isolation
- Auth: register (creates tenant+user), login, /me endpoint
- JWT HS256 tokens, bcrypt password hashing
- Alembic async setup with initial migration
- 6 passing tests (register, login, wrong password, me, no token, health)
Co-Authored-By: Claude Sonnet 4.6 <noreply@anthropic.com>
Marius Mutu
907b7be0fd