feat: server-based version with menu flagging, distributed polling, and SSE

Complete implementation including:
- Express server with Bessa API proxy
- Puppeteer scraper for menu data
- Flag storage (file-based persistence)
- SSE manager for real-time updates
- Polling orchestrator for distributed polling
- Frontend with weekly view, ordering, and flagging UI
- Yellow/green glow indicators for flagged items

src/utils/logger.ts

@@ -0,0 +1,25 @@
+// Simple logger utility
+
+export const logger = {
+    info: (message: string, ...args: any[]) => {
+        console.log(`[INFO] ${message}`, ...args);
+    },
+
+    success: (message: string, ...args: any[]) => {
+        console.log(`✅ ${message}`, ...args);
+    },
+
+    error: (message: string, ...args: any[]) => {
+        console.error(`❌ [ERROR] ${message}`, ...args);
+    },
+
+    debug: (message: string, ...args: any[]) => {
+        if (process.env.DEBUG) {
+            console.log(`[DEBUG] ${message}`, ...args);
+        }
+    },
+
+    warn: (message: string, ...args: any[]) => {
+        console.warn(`⚠️  [WARN] ${message}`, ...args);
+    },
+};