Initial commit: Hugo static site for nerdy events

- Custom cyberpunk/console theme with pure CSS
- Event management with RSS and iCal calendar feeds
- Gitea workflow for automated deployment
- Complete documentation and setup instructions

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

Co-Authored-By: Claude <noreply@anthropic.com>

public/categories/feed.xml

@@ -0,0 +1,11 @@
+<?xml version="1.0" encoding="utf-8" standalone="yes"?>
+<rss version="2.0" xmlns:atom="http://www.w3.org/2005/Atom">
+  <channel>
+    <title>Categories on NERDER.LAND</title>
+    <link>http://localhost:1313/categories/</link>
+    <description>Recent content in Categories on NERDER.LAND</description>
+    <generator>Hugo</generator>
+    <language>en-us</language>
+    <atom:link href="http://localhost:1313/categories/feed.xml" rel="self" type="application/rss+xml" />
+  </channel>
+</rss>