Add system monitoring tools to track server health and performance

Implements a SystemMonitoringPage with real-time metrics, scheduled tasks via node-cron, and an error tracking middleware.

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-78dfffe041b0/53043054-81f8-48da-804c-936ffa3007e0.jpg

server/index.ts

@@ -1,5 +1,6 @@
 import express, { type Request, Response, NextFunction } from "express";
 import { registerRoutes } from "./routes";
+import { taskScheduler } from "./services/taskScheduler";
 import { setupVite, serveStatic, log } from "./vite";
 
 const app = express();