feat: Implement Novu username and update functionality

src/lib/notificationService.ts

@@ -71,6 +71,30 @@ class NotificationService {
     }
   }
 
+  /**
+   * Update an existing Novu subscriber's profile information
+   */
+  async updateSubscriber(subscriberData: SubscriberData): Promise<{ success: boolean; error?: string }> {
+    if (!this.isNovuEnabled) {
+      console.warn('Novu is not configured. Skipping subscriber update.');
+      return { success: false, error: 'Novu not configured' };
+    }
+
+    try {
+      const { data, error } = await supabase.functions.invoke('update-novu-subscriber', {
+        body: subscriberData,
+      });
+
+      if (error) throw error;
+
+      console.log('Novu subscriber updated successfully');
+      return { success: true };
+    } catch (error: any) {
+      console.error('Error updating Novu subscriber:', error);
+      return { success: false, error: error.message };
+    }
+  }
+
   /**
    * Update subscriber preferences in Novu
    */