Update 7 files

- /_includes/word_count.html
- /_config.yml
- /_layouts/default.html
- /Gemfile
- /js/rss-feed-preview.js
- /_posts/2025-04-08-feed.md
- /links.md

_config.yml

@@ -10,6 +10,7 @@ paginate: 7
 plugins:
   - jekyll-sitemap
   - jekyll-feed
+  - jekyll-include-cache
 feed:
   path: atom.xml
 google_analytics: UA-137710294-1