Strictly opt-in, gated, with the deterministic features as the always-present floor:
- GenerationEngine: WebLLM (Qwen2.5-1.5B, WebGPU, CDN-loaded) + BYO-key cloud
(OpenAI-compatible); native stub. Pure grounding prompt builder (4 tests).
- rag.askLectures: retrieve Phase-1 hits -> grounded prompt -> answer with
citations; refuses when nothing relevant; falls back to search-only when no
engine is available. Never sends raw audio/transcripts — only question + snippets.
- aiStore (BYO key persisted in localStorage on web), Ask screen (answer +
tappable citation chips that jump to the audio + honest "verify" disclaimer),
Settings AI section (engine status + bring-your-own-key form).
279 tests green, 0 tsc errors, web export builds. ROADMAP phases 0-5 complete.
Co-Authored-By: Claude Opus 4.8 <noreply@anthropic.com>
