Resolve the backend URL from the current host at runtime (lib/backend-url.ts)
so one build works on localhost and any clinic LAN IP without a rebuild; used
by the API client, auth client, and socket. Wire the AI-chat mic to the Web
Speech API with graceful fallback. Add a Settings "About & updates" panel
(current/latest version, update command, shareable network address) and an
optional dismissible update banner.
Co-Authored-By: Claude Opus 4.8 <noreply@anthropic.com>
Khalid Abdi