feat: Add comprehensive React Native ecosystem RSS feeds

- Add Expo blog RSS feed for Expo SDK updates and announcements
- Add Callstack blog (React Native consulting company with high-quality content)
- Add Infinite Red blog (React Native agency with popular libraries like Flipper)
- Add Aman Mittal's blog (prolific React Native developer and writer)
- Improve React Native news coverage to capture more ecosystem updates

This will help capture important React Native ecosystem news including:
- Expo SDK releases and new features
- React Native performance optimizations
- Popular library updates
- Community best practices

🤖 Generated with [Claude Code](https://claude.ai/code)

Co-Authored-By: Claude <[email protected]>

Author: kboy-silvergym

scripts/generate_article.py

@@ -20,6 +20,10 @@
     # React Native関連
     "React Native Blog": "https://reactnative.dev/blog/rss.xml",
     "React Native Community": "https://medium.com/feed/react-native-community",
+    "Expo Blog": "https://expo.dev/blog.rss",
+    "Callstack Blog": "https://www.callstack.com/blog/rss.xml",
+    "Infinite Red": "https://infinite.red/feed.xml",
+    "Aman Mittal": "https://amanhimself.dev/rss.xml",
     "Reddit React Native": "https://www.reddit.com/r/reactnative/.rss",
     "Qiita (React Native)": "https://qiita.com/tags/react-native/feed",
     "React Native YouTube": "https://www.youtube.com/feeds/videos.xml?channel_id=UCMYS7PYW8T9lHVtNXbLvR3w",