chore: save session state – feature/phase-1 ready to implement

- Update session-context.md with exact resume point for next session
- Update settings.local.json with broader git permissions
- feature/grundstruktur merged to develop
- PAT authentication configured

Version: 0.2.3

backend/requirements.txt

@@ -0,0 +1,11 @@
+fastapi==0.111.0
+uvicorn[standard]==0.29.0
+sqlalchemy==2.0.30
+alembic==1.13.1
+asyncpg==0.29.0
+pydantic==2.7.1
+pydantic-settings==2.2.1
+python-jose[cryptography]==3.3.0
+passlib[bcrypt]==1.7.4
+python-multipart==0.0.9
+greenlet==3.0.3