Implement daemon socket listener management in BranchView.vue

- Added a watcher for the daemon socket to properly register and unregister message event listeners on socket changes.
- Simplified the event listener setup for handling daemon messages, improving code clarity and maintainability.
- Ensured that listeners are removed during component unmount to prevent memory leaks.

frontend/src/views/falukant/BranchView.vue

@@ -144,6 +144,19 @@ export default {
         RevenueSection,
         BuyVehicleDialog,
     },
+
+    watch: {
+        // Wenn sich der Daemon-Socket ändert (z.B. nach Login/Reconnect),
+        // Listener sauber entfernen/neu registrieren.
+        daemonSocket(newSocket, oldSocket) {
+            if (oldSocket) {
+                oldSocket.removeEventListener('message', this.handleDaemonMessage);
+            }
+            if (newSocket) {
+                newSocket.addEventListener('message', this.handleDaemonMessage);
+            }
+        }
+    },
  
     data() {
         return {
@@ -181,24 +194,9 @@ export default {
         }
 
         // Live-Socket-Events (Daemon WS)
-        [
-            "production_ready", "stock_change", "price_update",
-            "director_death", "production_started", "selled_items",
-            "knowledge_update", "falukantUpdateStatus", "falukantBranchUpdate"
-        ].forEach(eventName => {
-            if (this.daemonSocket) {
-                this.daemonSocket.addEventListener('message', (event) => {
-                    try {
-                        const data = JSON.parse(event.data);
-                        if (data.event === eventName) {
-                            this.handleEvent(data);
-                        }
-                    } catch (error) {
-                        // Ignore non-JSON messages like ping/pong
-                    }
-                });
-            }
-        });
+        if (this.daemonSocket) {
+            this.daemonSocket.addEventListener('message', this.handleDaemonMessage);
+        }
 
         // Live-Socket-Events (Backend Socket.io)
         if (this.socket) {
@@ -208,7 +206,10 @@ export default {
     },
 
     beforeUnmount() {
-        // Daemon WebSocket wird automatisch beim Logout geschlossen
+        // Daemon WebSocket: Listener entfernen (der Socket selbst wird beim Logout geschlossen)
+        if (this.daemonSocket) {
+            this.daemonSocket.removeEventListener('message', this.handleDaemonMessage);
+        }
         if (this.socket) {
             this.socket.off('falukantUpdateStatus');
             this.socket.off('falukantBranchUpdate');