phone: keep-alive foreground service + notification perm; glasses: clear NoConnection on reconnect

- ConnectionKeepAliveService (foreground, PARTIAL_WAKE_LOCK + WIFI_MODE_FULL_HIGH_PERF,
  started in PhoneVmApp.onCreate): without it HONOR deep-sleeps the phone process on
  screen-off and the glasses lose the WebSocket link. Same mechanic as view-mate.
- MainActivity: request POST_NOTIFICATIONS so the FGS notification is visible.
- VmGlassesController.onPhoneConnected(): drop a stuck NoConnection state when the
  phone (re)connects; returns to Running if a guest is active, else NoAppSelected.
- VmService: call it from onConnected.
- stopGuest/switch: force-stop the previous guest before releasing its display
  (releasing first migrates the guest task to display 0 full-screen); VirtualDisplay
  frame source now destroys its UserService on release.
- Mercury status: retry the first pullGeneralStatus until it lands, refresh every 15s
  and on tab open; GlassesStatusScreen shows 'Ждём статус от очков…' instead of fake zeros.
- MainActivity(glasses): HOME candidate flag + finish() on a non-default display (recursion guard).
- README: Home-launcher setup/rollback section.
- BOOTSTRAP_TEST.md: post-reboot Shizuku bootstrap investigation log.

app-phone-vm/src/main/kotlin/pw/binom/rayneovm/phone/PhoneVmApp.kt

@@ -21,6 +21,14 @@ class PhoneVmApp : Application(), ControllerProvider, MercuryControllerProvider
     override fun onCreate() {
         super.onCreate()
         Log.i(TAG, "PhoneVmApp onCreate, uid=${android.os.Process.myUid()}")
+        // Хранитель связи: держит процесс живым при выключенном экране, иначе HONOR усыпляет
+        // его и очки теряют WebSocket-связь. Может быть запрещён системой при старте из фона —
+        // тогда связь просто отвалится по экрану, как раньше; приложение не падает.
+        try {
+            ConnectionKeepAliveService.start(this)
+        } catch (t: Throwable) {
+            Log.w(TAG, "ConnectionKeepAliveService start failed", t)
+        }
         // Запуск отложен до первого обращения — в lazy.
         controller.start()
         mercuryController.refresh()
@@ -28,6 +36,7 @@ class PhoneVmApp : Application(), ControllerProvider, MercuryControllerProvider
 
     override fun onTerminate() {
         super.onTerminate()
+        ConnectionKeepAliveService.stop(this)
         controller.stop()
         mercuryController.close()
     }