Enable automatic data backups to secure user information regularly

Implements automatic database backups every 12 hours using node-cron, retaining only the 10 most recent backups in server/backup-scheduler.ts.

Replit-Commit-Author: Agent
Replit-Commit-Session-Id: 91318273-c764-4fd4-be04-bdc12c38af32
Replit-Commit-Screenshot-Url: https://storage.googleapis.com/screenshot-production-us-central1/0715008c-7244-40f4-befc-26c014852236/674ec742-23a2-4047-910f-36599184f036.jpg

server/index.ts

@@ -1,6 +1,7 @@
 import express, { type Request, Response, NextFunction } from "express";
 import { registerRoutes } from "./routes";
 import { setupVite, serveStatic, log } from "./vite";
+import { startBackupScheduler } from "./backup-scheduler";
 
 const app = express();
 app.use(express.json());
@@ -66,5 +67,8 @@ app.use((req, res, next) => {
     reusePort: true,
   }, () => {
     log(`serving on port ${port}`);
+    
+    // Start the automatic backup scheduler
+    startBackupScheduler();
   });
 })();