Chat: no time limit on the retry (slow connections)

Chat: retry stalled downloads so an audit from the desktop app always attaches

Accept an audit handed over from the old address

Chat: instant answers from the knowledge base, AI download in the background with consent, auto-start when stored, rewrite with AI

Security assistant chat as the front page (Nox-style, WebLLM on device, grounded in the Devseis knowledge base, Run audit from chat); phone check moved to phone.html