ensureSelfInTargets() and loadDashboardState() ran as independent
coroutines, so the dashboard could read selfNeedsRestart=false before
the init completed. On slower devices (Pixel 4a) this caused "Installed,
inactive" instead of the restart prompt.
- Make selfNeedsRestart nullable; show spinner until resolved
- Sync zygisk targets to module dir so next app fork picks them up
- Show "restart app to activate" instead of misleading "inactive"
- Add scripts/clean-device.sh for testing fresh installs via adb
