Add system for managing and scheduling data backups

Introduce a new backup management feature with automated scheduling, manual backups, and a dedicated interface for viewing backup status and details. This includes integrating `node-cron` for scheduling, updating the database schema to store backup information, and creating new routes and components for the backup manager.

Replit-Commit-Author: Agent
Replit-Commit-Session-Id: 7c468936-2a88-4686-ac0a-84921a45222d
Replit-Commit-Checkpoint-Type: full_checkpoint
Replit-Commit-Screenshot-Url: https://storage.googleapis.com/screenshot-production-us-central1/1957c339-2757-4d1f-8e92-e9f71a1ce58e/7c468936-2a88-4686-ac0a-84921a45222d/9xfbVBU

server/routes.ts

@@ -2352,7 +2352,12 @@ RÉSUMÉ DU SCAN
 
   app.post('/api/backups', isAuthenticated, requireAdmin, async (req: any, res) => {
     try {
-      const backup = await backupService.createBackup('manual');
+      const user = await storage.getUserWithGroups(req.user.claims ? req.user.claims.sub : req.user.id);
+      if (!user) {
+        return res.status(404).json({ message: "User not found" });
+      }
+
+      const backup = await backupService.createBackup('manual', user.id);
       res.json(backup);
     } catch (error) {
       console.error("Error creating backup:", error);