* Add a mobile native-chat opt-in so users pick terminal vs chat once
Mirror the notifications one-time opt-in for the native-chat default view.
After pairing, a full-screen modal (modeled on notification-opt-in) lets the
user choose whether supported agent sessions open in the terminal or in native
chat, then persists the choice to the existing orca:defaultSessionView key.
- Expose readDefaultSessionViewPreference() (tri-state; absent key = undecided)
so the gate can prompt exactly once; loadDefaultSessionView() is unchanged.
- shouldPresentSessionViewOptIn() gates the screen; the home focus effect shows
it after the notification opt-in.
- Settings -> Native chat toggle (already shipped) remains the recovery path.
* fix(mobile): preserve onboarding flow after pairing
* refine mobile session view opt-in copy
* Unify mobile onboarding prompts
OrcaWin
Brennan Benson