feat: Add FCM token display and copy functionality in ChatsListScreen

app/src/main/java/com/rosetta/messenger/MainActivity.kt

@@ -420,6 +420,8 @@ class MainActivity : FragmentActivity() {
         com.rosetta.messenger.push.RosettaFirebaseMessagingService.isAppInForeground = true
         // ⚡ На возврате в приложение пробуем мгновенный reconnect без ожидания backoff.
         ProtocolManager.reconnectNowIfNeeded("activity_onResume")
+        // 🔄 Desktop parity: синхронизация при каждом заходе в приложение
+        ProtocolManager.syncOnForeground()
     }
 
     override fun onPause() {

app/src/main/java/com/rosetta/messenger/network/ProtocolManager.kt

@@ -69,6 +69,7 @@ object ProtocolManager {
     private val _syncInProgress = MutableStateFlow(false)
     val syncInProgress: StateFlow<Boolean> = _syncInProgress.asStateFlow()
     @Volatile private var resyncRequiredAfterAccountInit = false
+    @Volatile private var lastForegroundSyncTime = 0L
     // Desktop parity: sequential task queue matching dialogQueue.ts (promise chain).
     // Uses Channel to guarantee strict FIFO ordering (Mutex+lastInboundJob had a race
     // condition: Dispatchers.IO doesn't guarantee FIFO, so the last-launched job could
@@ -561,6 +562,22 @@ object ProtocolManager {
     fun reconnectNowIfNeeded(reason: String = "foreground_resume") {
         getProtocol().reconnectNowIfNeeded(reason)
     }
+
+    /**
+     * Desktop parity: синхронизация при каждом заходе в приложение.
+     * Desktop вызывает trySync() на каждый handshakeExchangeComplete.
+     * На Android — вызываем из onResume(), если уже AUTHENTICATED и не идёт sync.
+     * Дебаунс 5 секунд чтобы не спамить при быстром alt-tab.
+     */
+    fun syncOnForeground() {
+        if (!isAuthenticated()) return
+        if (syncBatchInProgress) return
+        val now = System.currentTimeMillis()
+        if (now - lastForegroundSyncTime < 5_000) return
+        lastForegroundSyncTime = now
+        addLog("🔄 SYNC on foreground resume")
+        requestSynchronize()
+    }
     
     /**
      * Authenticate with server

app/src/main/java/com/rosetta/messenger/ui/chats/ChatsListScreen.kt

@@ -1148,6 +1148,58 @@ fun ChatsListScreen(
                                                                 }
                                                         )
 
+                                                        // 🔔 FCM Token
+                                                        DrawerDivider(isDarkTheme)
+                                                        run {
+                                                                var fcmToken by remember { mutableStateOf<String?>(null) }
+                                                                LaunchedEffect(Unit) {
+                                                                        fcmToken = context.getSharedPreferences("rosetta_prefs", Context.MODE_PRIVATE)
+                                                                                .getString("fcm_token", null)
+                                                                }
+                                                                val clipboardManager = androidx.compose.ui.platform.LocalClipboardManager.current
+                                                                val tokenValue = fcmToken
+                                                                if (!tokenValue.isNullOrEmpty()) {
+                                                                        Column(
+                                                                                modifier = Modifier
+                                                                                        .fillMaxWidth()
+                                                                                        .clickable {
+                                                                                                clipboardManager.setText(
+                                                                                                        androidx.compose.ui.text.AnnotatedString(tokenValue)
+                                                                                                )
+                                                                                                android.widget.Toast.makeText(
+                                                                                                        context,
+                                                                                                        "FCM token copied",
+                                                                                                        android.widget.Toast.LENGTH_SHORT
+                                                                                                ).show()
+                                                                                        }
+                                                                                        .padding(horizontal = 20.dp, vertical = 10.dp)
+                                                                        ) {
+                                                                                Text(
+                                                                                        text = "FCM Token (tap to copy)",
+                                                                                        fontSize = 11.sp,
+                                                                                        fontWeight = FontWeight.Medium,
+                                                                                        color = if (isDarkTheme) Color(0xFF8E8E93) else Color(0xFF8E8E93)
+                                                                                )
+                                                                                Spacer(modifier = Modifier.height(4.dp))
+                                                                                Text(
+                                                                                        text = tokenValue,
+                                                                                        fontSize = 9.sp,
+                                                                                        color = if (isDarkTheme) Color(0xFF555555) else Color(0xFFAAAAAA),
+                                                                                        maxLines = 3,
+                                                                                        overflow = TextOverflow.Ellipsis,
+                                                                                        fontFamily = FontFamily.Monospace
+                                                                                )
+                                                                        }
+                                                                } else {
+                                                                        Text(
+                                                                                text = "FCM Token: not available",
+                                                                                fontSize = 11.sp,
+                                                                                color = if (isDarkTheme) Color(0xFF555555) else Color(0xFFAAAAAA),
+                                                                                modifier = Modifier.padding(horizontal = 20.dp, vertical = 10.dp)
+                                                                        )
+                                                                }
+                                                        }
+
                                                 }
 
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