Исправление бесконечного рендер-цикла SearchView и поиск по публичному ключу

Rosetta/Core/Network/Protocol/ProtocolManager.swift

@@ -328,14 +328,13 @@ final class ProtocolManager: @unchecked Sendable {
 
     private func startHeartbeat(interval: Int) {
         heartbeatTask?.cancel()
-        let intervalMs = UInt64(interval) * 1_000_000_000 / 3
+        // Match Android: intervalMs = (intervalSeconds * 1000L) / 2
+        let intervalNs = UInt64(interval) * 1_000_000_000 / 2
 
         heartbeatTask = Task {
-            // Send first heartbeat immediately
-            client.sendText("heartbeat")
-
+            // Match Android: delay first, then send (no immediate first beat)
             while !Task.isCancelled {
-                try? await Task.sleep(nanoseconds: intervalMs)
+                try? await Task.sleep(nanoseconds: intervalNs)
                 guard !Task.isCancelled else { break }
                 client.sendText("heartbeat")
             }