feat(api): add debug logging to vision_rag_query (VRAG)

feat(vision-rag): add LangChain deps and verify .venv; vision_rag_query uses ChatOpenAI; set default OPENAI_MODEL to gpt-4o

fix(frontend): constrain preview image to container and improve OpenAI chat error logging; rebuild and sync CRA assets

fix(api): serve CRA build assets from nested static/static paths to avoid 404s

chore: rebuild frontend and sync to static

Add OpenAI model listing to chat API for debugging

Fix static file routing by adding explicit handlers for JS files

Add dedicated static file route handler to fix 404 errors for JS files

chore(api): add no-cache headers to serve_static to prevent stale frontend assets

feat(openai): add OpenAI Chat UI and backend via official OpenAI SDK; integrate built React assets; update requirements and env pins

Do not modify session in serve_index_html to avoid extending expiry; honor absolute 2-min expiry

Idle auto-logout: add 2-min client-side inactivity timer that redirects to /logout; keep session heartbeat redirect detection

Heartbeat fix: detect redirect on expired session using fetch redirect:'manual' and redirected/url checks; auto-redirect to /login

Fix redirect loop: show login page if session is authenticated but not fresh; only redirect to index when fresh

Redirect to login instead of 401 on unauthorized/not-fresh sessions (Flask-Login handlers)

Redirect-on-expiry: fresh required on /api/status and injected heartbeat in index.html responses to auto-redirect to /login when session expires

Security/session hardening: absolute 2-min expiry (SESSION_REFRESH_EACH_REQUEST=False), disable remember, anti-autofill login form, no-store cache on protected routes, clear session on logout

Enforce 2-minute session expiry: set PERMANENT_SESSION_LIFETIME=120s via timedelta and disable remember-login

Adjust session cookie SameSite=None and set PERMANENT_SESSION_LIFETIME=120s for testing

Use SameSite=None for session/remember cookies (iframe compatibility on Spaces)

Fix login redirect loop with improved session handling and debugging

Fix login redirect loop with improved session persistence

Fix Flask-Session permission error by using temp directory

Fix login redirect loop with Flask-Session and improved routing

Fix login redirect loop by improving login and serve_react functions

Fix routing conflict causing redirect loop after login

Update api.py

Fix authentication issues with Flask-Login

Fix login redirect issue and enhance session management

Fix login functionality and translate UI to English

Add login feature with Flask-Login

Copy files from hf-space to vision_llm_agent