- instance_lite.h/c: full uTun stack from INI config text
(keygen, uasync, UTUN_INSTANCE, SQLite, chat_core/sync, BGP, etcp_router)
- jni_bridge: nativeStart/Stop, nativeJoinChannel → chat_sync_connect_from_invite,
nativeSubscribeLogs, C logs → logcat + Kotlin LogManager
- Kotlin: direct read-only SQLite queries (channels, messages),
ViewModel with live event callbacks, reactive LogScreen (tail -f),
CameraX QR scanner with proper lifecycle, JoinChannelDialog
- HeadlessService: generates INI config from Kotlin settings → C instance
