Document bank architecture + new endpoints + Groq provider

Feature: QuestionBank + game endpoints (/next, /prefill) + Groq provider

Quality: retry LLM once at greedy temp when JSON parse fails

Quality: NLI premise/hypothesis order fix, focused sentence premise, no false unverified

Quality: deterministic low temp for smoke model, smaller generation budget

Quality: skip NLI for grounded fallback answers, filter stopword key terms

Quality: chat-template prompting, robust JSON parse, grounded context fallback, real difficulty distance

Document live deployment URL

Remove stray .tree.txt

Fix ensure_index cold-start path (sources_path on settings)

Replace with MultiQGen RAG question generator (FastAPI)

Refresh backend from local workspace

Single update: external Postgres support + persistent DB fallback

Optimize Docker startup and reduce Space cold-start overhead

Persist users DB path and migrate legacy db

Trigger rebuild

Add device block controls to admin dashboard

Add simple admin dashboard UI

Deploy access gateway backend

initial commit