Add Puppeteer support to bypass bot detection

Major changes:
- Install puppeteer, puppeteer-extra, puppeteer-extra-plugin-stealth
- Create PuppeteerFetcher class with Stealth plugin
- Update all crawlers to use Puppeteer instead of Axios
- Add browser lifecycle management (init/close)
- Update test.ts and index.ts with browser cleanup

Features:
- Real Chrome browser execution (bypasses TLS fingerprinting)
- Stealth plugin to avoid bot detection
- Headless mode for background operation
- Proper error handling and browser cleanup

Limitations:
- Requires Chrome/Chromium installation
- Higher resource usage (~200MB memory)
- Slower than Axios (browser startup time)
- Cannot test in current environment (Chrome install blocked)

Next steps:
- Test in local environment with Chrome installed
- Adjust HTML selectors based on actual page structure
- Monitor for Cloudflare blocks

crawler/package.json

@@ -10,13 +10,20 @@
     "start": "node dist/index.js",
     "test": "tsx src/test.ts"
   },
-  "keywords": ["crawler", "community", "korea"],
+  "keywords": [
+    "crawler",
+    "community",
+    "korea"
+  ],
   "author": "",
   "license": "MIT",
   "dependencies": {
     "axios": "^1.7.9",
     "cheerio": "^1.0.0",
-    "node-cron": "^3.0.3"
+    "node-cron": "^3.0.3",
+    "puppeteer": "^24.30.0",
+    "puppeteer-extra": "^3.3.6",
+    "puppeteer-extra-plugin-stealth": "^2.11.2"
   },
   "devDependencies": {
     "@types/node": "^22.10.2",