Deploy tutorial feature and recent fixes

Fix SPA deep-link 404s on Hugging Face and remove leftover debug instrumentation.

Fix interactive chat wizards and surface in-progress creations on workshop pages.

Switch all LLM calls to GPT-5.4 and load secrets from shared.env.

fix: advisor preview accepts main JWT; resilient user lookup for /auth/me

Replace MongoDB with SQLite + bucket-mounted file uploads

Workshop: sample data menu, manage page, LLM UX, HANA 422 fix

fix(advisor-preview): workshop iframe auth, static bundle, Vite proxy

feat(experiment): multi-LLM chat with LLMChats3-style registry

Add RAG document upload and context injection for personas and advisor panels

Workshop: persona/advisor experiments, builds, UI polish

feat: advisor panel wizard, persona selection, and workshop updates

feat(persona): v2 wizard fields, chat draft sync, UX polish

Workshop UI, speech settings, experiment page, and HF Spaces deployment

Add docker-compose.dev.yml hot reload (Mongo, uvicorn --reload, Vite); SERVE_FRONTEND_STATIC; API_PROXY_TARGET

Fix Gemini chat (retries, JSON parse, config path), health gemini flag; always-visible user menu; Profile for guests; clearer chat errors

Initial CU Student AI Project Helper: FastAPI, Gemini, Mongo, React SPA