- Add LLMProvider.isUserSelectable (default true) and filter
ProviderPickerSection on it; next pass can hide non-user presets
(e.g. a future DeepSeek key-preset) without changing call sites.
- KeyboardRootView: hide TranslationChip when off (matches user's
mental model of an opt-in feature), drop the 'warming' branch
(Qwen3 download UX was removed with the backend in v0.2.0), unify
chip pill height to minHeight 28 + vertical 6 for visual rhythm
across all topbar chips.
- TranslationChip: drop isLocal warning path — both engines now
run the translate-and-polish step (local routes through DeepSeek
via ProviderConfig.localModeProviderId).
- OnboardingView: cloud engine branch now wraps the translation
row in the same surface card chrome as the local branch.
- Strings: drop keyboard.models.warming (no longer referenced).
DeepSeek key pre-fill deferred to a follow-up.