Addresses on-device feedback from Increment 1:
- #2 Professional incoming screen: IncomingCallActivity redesigned — brand-
blue backdrop, circular avatar with the caller's initial, name + call
type, and two round icon buttons (red hang-up = Decline, green phone =
Accept) instead of the full-screen colored buttons. New vector drawables
ic_call_answer / ic_call_decline (also used on the notification actions).
- #1 Killed-state ring: the missed-call notification arriving while killed
proves FCM reaches the app, so the ring (high-priority DATA) is being
held by OEM battery management (OnePlus/Oppo Doze) until the call is over.
Added REQUEST_IGNORE_BATTERY_OPTIMIZATIONS + a requestCallReliability()
plugin method that prompts the "allow background activity" dialog once;
the web calls it on Android call setup. (OEM auto-launch is a manual
toggle with no API — guide the user.)
#3 (speaker/Bluetooth) and #4 (background audio) ride Increment 2 (native
LiveKit Android media + foreground service) — kept separate so the LiveKit
dependency can't block these UI/reliability fixes (the iOS coupling lesson).
Co-Authored-By: Claude Opus 4.8 <noreply@anthropic.com>
SravanandClaude Opus 4.8
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