fix(pages): use /Pagus/ base path to match repo casing

GitHub Pages preserves repo-name casing; asset URLs must match.

Co-Authored-By: Claude Opus 4.7 <noreply@anthropic.com>

Author: tthallos

playground/vite.config.ts

@@ -3,5 +3,5 @@ import react from '@vitejs/plugin-react'
 
 export default defineConfig({
   plugins: [react()],
-  base: process.env.GITHUB_ACTIONS ? '/pagus/' : '/',
+  base: process.env.GITHUB_ACTIONS ? '/Pagus/' : '/',
 })