perf: optimize bundle size and add build optimizations

- Move HTML stripping to server-side to remove cheerio from client bundle (247KB reduction)
- Add terser minification with console/debugger removal
- Enable manual code chunking for chart.js and auth libraries
- Convert TTF fonts to WOFF2 format (~900KB savings)
- Enable brotli/gzip precompression in adapter
- Update CSS to prefer WOFF2 with TTF fallback

package.json

@@ -34,6 +34,7 @@
 		"jsdom": "^27.2.0",
 		"svelte": "^5.38.6",
 		"svelte-check": "^4.0.0",
+		"terser": "^5.46.0",
 		"tslib": "^2.6.0",
 		"typescript": "^5.1.6",
 		"vite": "^7.1.3",