Fusion
2ce7862058
feat: simplify auth flow - replace JWT with session cookies
Replace complex JWT + refresh token authentication with simple
session-based auth using signed cookies.
**Removed:**
- JWT token service (jwt_service.py)
- Refresh token store (refresh_store.py)
- Refresh token model and database table
- JWKS fetching and OIDC token verification
- python-jose dependency
**Added:**
- Session service (session.py) with HMAC-SHA256 signed cookies
- Auth dependencies module for shared auth logic
- Session-based auth endpoints
**Updated:**
- All API endpoints to use session-based auth
- Config: removed JWT settings, added SESSION_SECRET/SESSION_TTL_HOURS
- Tests: rewritten for session-based flow
- Frontend: no changes needed (already uses cookies)
Quality gates: ruff ✓, mypy ✓, typecheck ✓, lint ✓