fix(notification): disconnect idle background socket (#858)

* fix(notification): disconnect idle background socket

* fix(notification): clear rejected prompt state

app/src/main/java/com/m57/hermescontrol/MainActivity.kt

@@ -13,6 +13,8 @@ import androidx.compose.runtime.collectAsState
 import androidx.compose.runtime.getValue
 import androidx.compose.ui.Modifier
 import com.m57.hermescontrol.data.local.AuthManager
+import com.m57.hermescontrol.data.ws.HermesWsClient
+import com.m57.hermescontrol.notification.NotificationHelper
 import com.m57.hermescontrol.notification.NotificationReplyReceiver
 import com.m57.hermescontrol.theme.HermesControlTheme
 import com.m57.hermescontrol.util.LocaleContextWrapper
@@ -73,6 +75,21 @@ class MainActivity : ComponentActivity() {
         consumeNotificationIntent(intent)
     }
 
+    override fun onStart() {
+        super.onStart()
+        NotificationHelper.setAppForeground(this, true)
+        NotificationHelper.stop(this)
+        if (AuthManager.isGatedMode() || !AuthManager.getToken().isNullOrBlank()) {
+            HermesWsClient.connect()
+        }
+    }
+
+    override fun onStop() {
+        NotificationHelper.setAppForeground(this, false)
+        NotificationHelper.start(this)
+        super.onStop()
+    }
+
     private fun consumeNotificationIntent(intent: Intent?) {
         // Issue #832: MainActivity is exported (launcher requirement) — only
         // honor intents stamped with our own notification action.