Use envConfig for DESKTOP_API_URL in get-shared-tasks

Co-Authored-By: Gemini <noreply@google.com>

Author: m13v

web/frontend/src/actions/tasks/get-shared-tasks.ts

@@ -1,6 +1,7 @@
 'use server';
+import envConfig from '@/src/constants/envConfig';
 
-const DESKTOP_API_URL = process.env.DESKTOP_API_URL || 'https://desktop-backend-hhibjajaja-uc.a.run.app';
+const DESKTOP_API_URL = envConfig.DESKTOP_API_URL;
 
 export interface SharedTaskInfo {
   description: string;