Replace cheero with puppeteer

server.ts

@@ -3,6 +3,7 @@ import { serve } from "@hono/node-server";
 import { Hono } from "hono";
 import { batchScheduler } from "./services/batch-scheduler.js";
 import { config, validateConfig } from "./services/config.js";
+import { closeBrowser } from "./services/content-extractor.js";
 
 // Validate configuration on startup
 try {
@@ -572,6 +573,19 @@ app.get("*", serveIndex);
 // Batch processing - now using batch scheduler
 console.log("🔄 Batch scheduler initialized and ready");
 
+// Graceful shutdown
+process.on('SIGINT', async () => {
+  console.log('\n🛑 Received SIGINT. Graceful shutdown...');
+  await closeBrowser();
+  process.exit(0);
+});
+
+process.on('SIGTERM', async () => {
+  console.log('\n🛑 Received SIGTERM. Graceful shutdown...');
+  await closeBrowser();
+  process.exit(0);
+});
+
 // サーバー起動
 serve(
   {