Refines v1.19: Meta's presence detector stays enabled and Immortal now cooperates with it rather than removing stock functionality.
How it behaves now (measured on device):
- Someone nearby: presence activity extends the system's dream deadline, so the photo frame runs uninterrupted — no bounce, no flicker.
- Room empties: the system ends the screensaver; Immortal hands over seamlessly, then mains-powered Portals keep the frame up permanently while the Portal Go (with the renamed "Sleep on battery when nobody's around" setting, on by default) goes to real sleep to save the battery.
- The kit no longer disables presence (a DISABLE_PRESENCE=true opt-out remains for camera-averse setups). If you ran the v1.19 kit, re-enable with:
adb shell pm enable com.facebook.alohaservices.presence
Existing installs update in place.