update 2026 theme and logo (#541)

* purple styling

* add logo hero image

* remove theme switcher

* use gray bg

* fix icons

* og image

* fix link style

* tweak nav

* newline

* update icons

* remove 2025 source

* add placeholder pages

* fix ordering

* update nav style

* launch new site

* update 2027 page style

* update rockgarden version

* list some index pages

* reorder cards

Author: tylerdave

.gitignore

@@ -18,8 +18,8 @@ public/
 2026/_site/
 2026/.rockgarden/
 
-# Theme build artifacts
-2026/_themes/*/node_modules/
+# Dependencies
+node_modules/
 
 # Mac files
 .DS_Store