Better-Auth uses nanoid strings for user IDs, not UUIDs. Changed all
user_id parameter/return types in the API layer from UUID to str,
removed the obsolete UUID import where unused, and updated the
_validate_session_token return type accordingly.
Co-authored-by: CartSnitch Engineer Bot <cartnoreply@cartsnitch.com>
Co-authored-by: Paperclip <noreply@paperclip.ing>
Replace hand-rolled JWT auth with Better-Auth session-based authentication.
- Scaffold auth/ Node.js service with Better-Auth, bcrypt password compat,
Postgres adapter mapped to existing users table
- Add Alembic migration (002) creating sessions, accounts, verifications
tables and migrating password hashes to accounts table
- Update FastAPI auth dependency to validate sessions via shared DB
(supports both cookie and Bearer token)
- Remove registration/login/refresh endpoints from API gateway (now
handled by Better-Auth service)
- Update frontend to use better-auth/react client with httpOnly cookies
(no tokens in localStorage or memory)
- Rewrite auth store, Login, Register, Dashboard, Settings, ProtectedRoute
to use session-based auth
- Update all tests to create sessions directly in DB instead of JWT tokens
Resolves CAR-27
See plan: CAR-26#document-plan
Co-Authored-By: Paperclip <noreply@paperclip.ing>
cartsnitch-engineer[bot]