fix: improve maintenance and synchronize live conversations

frontend/src/services/socket.ts

@@ -34,7 +34,15 @@ class SocketService {
   }
 
   connect(namespace: string = '/agent') {
-    if (this.socket?.connected) return
+    if (this.socket) {
+      // Socket.IO keeps the same instance while its manager reconnects. Reuse
+      // that instance so existing event subscriptions survive the reconnect
+      // window and repeated callers cannot orphan a pending socket.
+      if (!this.socket.connected && !this.socket.active) {
+        this.socket.connect()
+      }
+      return
+    }
 
     // Use the runtime-resolved WS URL (window.APP_CONFIG → VITE_WS_URL → localhost),
     // same as every other consumer. Reading import.meta.env directly baked the
@@ -76,12 +84,13 @@ class SocketService {
     }
   }
 
-  emit(event: string, data: unknown) {
+  emit(event: string, data: unknown, acknowledge?: () => void) {
     if (!this.socket) {
       console.error('Socket not initialized')
       return
     }
-    this.socket.emit(event, data)
+    if (acknowledge) this.socket.emit(event, data, acknowledge)
+    else this.socket.emit(event, data)
   }
 
   emitPing(event: string) {