Desktop type scale: page titles 48px, section headings 32px, hero 64px, About copy 17px; keep certificate title out of the scale; v2.24.0

Co-Authored-By: Claude Sonnet 5.5 <noreply@anthropic.com>

package.json

@@ -1,7 +1,7 @@
 {
   "name": "siteforge",
   "private": true,
-  "version": "2.23.3",
+  "version": "2.24.0",
   "type": "module",
   "scripts": {
     "dev": "vite",