feat: implement Paarrot API for Electron integration with navigation and IPC handlers

src/app/features/call/useCall.ts

@@ -19,6 +19,28 @@ interface CallContextValue {
 
 const CallContext = createContext<CallContextValue | null>(null);
 
+/**
+ * Global reference to CallService for use outside React components
+ * (e.g., from Electron IPC handlers)
+ */
+let globalCallServiceInstance: CallService | null = null;
+
+/**
+ * Get the global CallService instance
+ * @returns The CallService instance or null if not initialized
+ */
+export function getCallService(): CallService | null {
+  return globalCallServiceInstance;
+}
+
+/**
+ * Set the global CallService instance
+ * @param service - The CallService instance
+ */
+function setGlobalCallService(service: CallService | null): void {
+  globalCallServiceInstance = service;
+}
+
 /**
  * Hook to access the call context
  * @returns The call context value
@@ -103,6 +125,7 @@ export function useCallService(options?: UseCallServiceOptions): CallContextValu
         );
 
         setCallService(service);
+        setGlobalCallService(service); // Make available globally for Paarrot API
         setCallSupported(true);
         setCallSupportLoading(false);
         // eslint-disable-next-line no-console
@@ -146,6 +169,7 @@ export function useCallService(options?: UseCallServiceOptions): CallContextValu
     return () => {
       unsubscribe?.();
       service?.dispose();
+      setGlobalCallService(null); // Clear global reference
     };
   }, [mx, configuredLivekitUrl]);