feat: Implement read receipt handling and mark all outgoing messages as read

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

@@ -335,17 +335,18 @@ class PacketMessage : Packet() {
 /**
  * Read packet (ID: 0x07)
  * Уведомление о прочтении сообщения
+ * Порядок полей как в Desktop: privateKey, fromPublicKey, toPublicKey
  */
 class PacketRead : Packet() {
-    var messageId: String = ""
+    var privateKey: String = ""
     var fromPublicKey: String = ""
     var toPublicKey: String = ""
-    var privateKey: String = ""
     
     override fun getPacketId(): Int = 0x07
     
     override fun receive(stream: Stream) {
-        messageId = stream.readString()
+        // Desktop: privateKey, fromPublicKey, toPublicKey
+        privateKey = stream.readString()
         fromPublicKey = stream.readString()
         toPublicKey = stream.readString()
     }
@@ -353,10 +354,10 @@ class PacketRead : Packet() {
     override fun send(): Stream {
         val stream = Stream()
         stream.writeInt16(getPacketId())
-        stream.writeString(messageId)
+        // Desktop: privateKey, fromPublicKey, toPublicKey
+        stream.writeString(privateKey)
         stream.writeString(fromPublicKey)
         stream.writeString(toPublicKey)
-        stream.writeString(privateKey)
         return stream
     }
 }
@@ -422,6 +423,7 @@ class PacketTyping : Packet() {
 /**
  * Chunk packet (ID: 0x09)
  * Для разбиения больших пакетов на части (как в Desktop)
+ * ВАЖНО: chunkIndex и totalChunks - Int16, не Int32!
  */
 class PacketChunk : Packet() {
     var chunkId: String = ""
@@ -432,18 +434,20 @@ class PacketChunk : Packet() {
     override fun getPacketId(): Int = 0x09
     
     override fun receive(stream: Stream) {
+        // В Desktop: readInt16 для index и total
+        chunkIndex = stream.readInt16()
+        totalChunks = stream.readInt16()
         chunkId = stream.readString()
-        chunkIndex = stream.readInt32()
-        totalChunks = stream.readInt32()
         data = stream.readBytes()
     }
     
     override fun send(): Stream {
         val stream = Stream()
         stream.writeInt16(getPacketId())
+        // В Desktop: writeInt16 для index и total
+        stream.writeInt16(chunkIndex)
+        stream.writeInt16(totalChunks)
         stream.writeString(chunkId)
-        stream.writeInt32(chunkIndex)
-        stream.writeInt32(totalChunks)
         stream.writeBytes(data)
         return stream
     }

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

@@ -87,9 +87,10 @@ object ProtocolManager {
         }
         
         // Обработчик прочтения (0x07)
+        // В Desktop PacketRead не содержит messageId - сообщает что собеседник прочитал сообщения
         waitPacket(0x07) { packet ->
             val readPacket = packet as PacketRead
-            addLog("✓✓ Read: ${readPacket.messageId.take(16)}...")
+            addLog("✓✓ Read from: ${readPacket.fromPublicKey.take(16)}...")
             
             scope.launch {
                 messageRepository?.handleRead(readPacket)