Improve platform health monitoring and add administrative task controls

Adds task scheduler initialization, enhanced health check, and admin monitoring API endpoints.

Replit-Commit-Author: Agent
Replit-Commit-Session-Id: c5f0c281-8dd8-4846-b452-4a07bcd21062
Replit-Commit-Screenshot-Url: https://storage.googleapis.com/screenshot-production-us-central1/9777c70b-fc38-4831-8d6b-78dfffe041b0/dc0a5a62-bcd9-407a-9d2c-d05501cafcbe.jpg

server/index.ts

@@ -67,5 +67,8 @@ app.use((req, res, next) => {
     reusePort: true,
   }, () => {
     log(`serving on port ${port}`);
+    
+    // Initialize background task scheduler
+    taskScheduler.initialize();
   });
 })();