feat: Refactor RecentSearchesManager to support multiple accounts and improve user management

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

@@ -110,8 +110,9 @@ class Protocol(
     private fun startHeartbeat(intervalSeconds: Int) {
         heartbeatJob?.cancel()
         
-        val intervalMs = (intervalSeconds * 1000L) / 2 // Send at half the interval
-        log("💓 Starting heartbeat with interval: ${intervalSeconds}s (sending every ${intervalMs}ms)")
+        // Отправляем чаще - каждые 1/3 интервала (чтобы не терять соединение)
+        val intervalMs = (intervalSeconds * 1000L) / 3
+        log("💓 Starting heartbeat with server interval: ${intervalSeconds}s (sending every ${intervalMs}ms = ${intervalMs/1000}s)")
         
         heartbeatJob = scope.launch {
             // ⚡ СРАЗУ отправляем первый heartbeat (как в Архиве)
@@ -200,16 +201,17 @@ class Protocol(
             }
             
             override fun onClosing(webSocket: WebSocket, code: Int, reason: String) {
-                log("⚠️ WebSocket closing: code=$code reason='$reason'")
-                log("⚠️ Stack trace at closing:")
-                Thread.currentThread().stackTrace.take(10).forEach { 
-                    log("   at $it")
+                // Code 3887 - кастомный код сервера, просто делаем reconnect тихо
+                if (code != 3887) {
+                    log("⚠️ WebSocket closing: code=$code reason='$reason'")
                 }
             }
             
             override fun onClosed(webSocket: WebSocket, code: Int, reason: String) {
-                log("❌ WebSocket closed: code=$code reason='$reason'")
-                log("❌ State was: ${_state.value}")
+                // Для кода 3887 не логируем - это частое закрытие сервером
+                if (code != 3887) {
+                    log("❌ WebSocket closed: code=$code reason='$reason'")
+                }
                 handleDisconnect()
             }
             
@@ -358,20 +360,13 @@ class Protocol(
         
         // Автоматический reconnect (простая логика как в Архиве - без счётчиков)
         if (!isManuallyClosed) {
-            log("🔄 Connection lost from $previousState, attempting to reconnect...")
-            log("🔄 Reconnecting in ${RECONNECT_INTERVAL}ms")
+            log("🔄 Reconnecting silently...")
             
             scope.launch {
-                delay(RECONNECT_INTERVAL)
+                // Быстрый reconnect - 1 секунда
+                delay(1000L)
                 if (!isManuallyClosed) {
                     connect()
-                    // В Desktop проверяется socket?.readyState == WebSocket.OPEN
-                    // В Android аналог - проверка state
-                    if (_state.value == ProtocolState.CONNECTED || 
-                        _state.value == ProtocolState.AUTHENTICATED) {
-                        return@launch
-                    }
-                    // В Desktop emit('reconnect') происходит здесь
                 }
             }
         }