ModelManager
interface ModelManager
The settings-screen-facing control surface for optional downloadable on-device models. Kept tiny on purpose (list / observe / download / delete). Backends that need no download (ML Kit Gemini Nano is managed by AICore; Foundation Models by the OS) don't appear here — only models the app fetches itself (MediaPipe Gemma) do.
Model binaries are NEVER shipped in the repo: download is user-triggered, wifi-only by default, into app-private storage.