Add service status panel and improve tech variant feeds

- Add ServiceStatusPanel: monitors AWS, Azure, GCP, GitHub, OpenAI, Slack, etc.
- Add new feeds: Engadget, Fast Company, MIT Research, Show HN, YC Launches, Dev Events
- Remove broken feeds: Protocol Policy, Axios AI, AnandTech (shut down)
- Add "SOON" badge for events within 2 days
- Fix GitHub Trending to use actual RSS feed (mshibanami.github.io)
- Add domains to rss-proxy allowlist

api/rss-proxy.js

@@ -86,6 +86,10 @@ const ALLOWED_DOMAINS = [
   'www.axios.com',
   'github.blog',
   'githubnext.com',
+  'mshibanami.github.io',
+  'www.engadget.com',
+  'news.mit.edu',
+  'dev.events',
 ];
 
 export default async function handler(req) {