SamoilenkoVadym 563d476a94 feat(backend): migrate from Flask to FastAPI with Redis sessions ...

- Create FastAPI application with async I/O
- Implement Redis session storage (fixes session loss on restart)
- Add JWT authentication with refresh tokens
- Add Microsoft SSO support via MSAL
- Copy all processors from src/ (100% reused, no changes)
- Create file upload/download endpoints
- Create metadata update endpoints
- Create template CRUD endpoints
- Add SQLAlchemy async database models
- Add Docker Compose configuration with Redis

Solves critical issues:
- Session management: Redis replaces in-memory dicts
- Scalability: Async FastAPI + microservices architecture
- File handling: Persistent storage with auto-cleanup

Key files:
- backend/app/main.py - FastAPI entry point
- backend/app/core/redis_client.py - Session store
- backend/app/core/auth.py - JWT authentication
- backend/app/api/* - All REST endpoints
- backend/app/processors/ - Reused from src/

Co-Authored-By: Claude Sonnet 4.5 (1M context) <noreply@anthropic.com>

2026-02-09 13:14:37 +00:00

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