web: bump to node 22, next 15, react 19, etc.

web/src/css/main.scss

@@ -1,8 +1,8 @@
-@import 'fonts.scss';
-@import 'variables.scss';
-@import 'animations.scss';
-@import 'base.scss';
+@use 'fonts.scss';
+@use 'variables.scss';
+@use 'animations.scss';
+@use 'base.scss';
 
-@import 'button.scss';
+@use 'button.scss';
 
-@import 'news.scss';
+@use 'news.scss';