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-glasses-vm/src/main/AndroidManifest.xml

@@ -50,16 +50,27 @@
         android:supportsRtl="true"
         tools:targetApi="36">
 
+        <!-- MainActivity — заодно HOME-кандидат: на этих очках BOOT_COMPLETED
+             ненадёжен, а домашний экран система поднимает всегда.
+             Дефолтным его не назначаем — это делается отдельно
+             (`cmd package set-home-activity`), по явной команде. -->
         <activity
             android:name=".MainActivity"
             android:exported="true"
-            android:configChanges="orientation|screenSize|keyboardHidden"
+            android:configChanges="orientation|screenSize|smallestScreenSize|screenLayout|density|keyboardHidden|navigation|mcc|mnc"
             android:launchMode="singleTask"
+            android:stateNotNeeded="true"
+            android:clearTaskOnLaunch="true"
             android:theme="@style/Theme.RayNeoVm">
             <intent-filter>
                 <action android:name="android.intent.action.MAIN" />
                 <category android:name="android.intent.category.LAUNCHER" />
             </intent-filter>
+            <intent-filter>
+                <action android:name="android.intent.action.MAIN" />
+                <category android:name="android.intent.category.HOME" />
+                <category android:name="android.intent.category.DEFAULT" />
+            </intent-filter>
         </activity>
 
         <!-- Foreground service: WebSocket server + mDNS -->