Admin panel: real data - backend API, users/audit/roles/stats, frontend wired

Co-authored-by: Cursor <cursoragent@cursor.com>

backend/src/routes/index.ts

@@ -1,4 +1,5 @@
 import { Router } from 'express';
+import adminRoutes from '../modules/admin/admin.routes';
 import authRoutes from '../modules/auth/auth.routes';
 import contactsRoutes from '../modules/contacts/contacts.routes';
 import crmRoutes from '../modules/crm/crm.routes';
@@ -10,6 +11,7 @@ import marketingRoutes from '../modules/marketing/marketing.routes';
 const router = Router();
 
 // Module routes
+router.use('/admin', adminRoutes);
 router.use('/auth', authRoutes);
 router.use('/contacts', contactsRoutes);
 router.use('/crm', crmRoutes);