feat: prevent duplicate initialization of Paarrot API and update server port

src/app/paarrot-api.ts

@@ -18,6 +18,11 @@ import { getCallService } from './features/call/useCall';
  */
 let navigateFunction: ((path: string) => void) | null = null;
 
+/**
+ * Track if the API has been initialized to prevent duplicate listeners
+ */
+let isInitialized = false;
+
 /**
  * Set the navigate function for programmatic navigation
  * Call this from your router setup
@@ -38,6 +43,13 @@ export function initPaarrotAPI(matrixClient: MatrixClient) {
     return;
   }
 
+  // Prevent duplicate registrations
+  if (isInitialized) {
+    console.log('Paarrot API: Already initialized, skipping');
+    return;
+  }
+  isInitialized = true;
+
   console.log('Paarrot API: Initializing API handler');
 
   // Listen for API actions from the Electron API server