feat: Implement FCM token handling and dialog cache management; enhance user experience and performance

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

@@ -454,8 +454,8 @@ class PacketChunk : Packet() {
 }
 
 /**
- * Push Token packet (ID: 0x0A)
- * Отправка FCM/APNS токена на сервер для push-уведомлений
+ * Push Token packet (ID: 0x0A) - DEPRECATED
+ * Старый формат, заменен на PacketPushNotification (0x10)
  */
 class PacketPushToken : Packet() {
     var privateKey: String = ""
@@ -482,3 +482,39 @@ class PacketPushToken : Packet() {
         return stream
     }
 }
+
+/**
+ * Push Notification Action
+ */
+enum class PushNotificationAction(val value: Int) {
+    SUBSCRIBE(0),
+    UNSUBSCRIBE(1)
+}
+
+/**
+ * Push Notification packet (ID: 0x10)
+ * Отправка FCM/APNS токена на сервер для push-уведомлений (новый формат)
+ * Совместим с React Native версией
+ */
+class PacketPushNotification : Packet() {
+    var notificationsToken: String = ""
+    var action: PushNotificationAction = PushNotificationAction.SUBSCRIBE
+    
+    override fun getPacketId(): Int = 0x10
+    
+    override fun receive(stream: Stream) {
+        notificationsToken = stream.readString()
+        action = when (stream.readInt8()) {
+            1 -> PushNotificationAction.UNSUBSCRIBE
+            else -> PushNotificationAction.SUBSCRIBE
+        }
+    }
+    
+    override fun send(): Stream {
+        val stream = Stream()
+        stream.writeInt16(getPacketId())
+        stream.writeString(notificationsToken)
+        stream.writeInt8(action.value)
+        return stream
+    }
+}