perf(core): self-host fonts, eliminate Google Fonts CDN, defer API fetches, and convert utility islands to zero-JS

package.json

@@ -16,6 +16,9 @@
     "@astrojs/react": "^6.0.1",
     "@astrojs/sitemap": "^3.7.4",
     "@astrojs/vercel": "^11.0.10",
+    "@fontsource-variable/inter": "^5.3.0",
+    "@fontsource-variable/jetbrains-mono": "^5.3.0",
+    "@fontsource/dotgothic16": "^5.3.1",
     "@fortawesome/fontawesome-free": "^7.3.1",
     "@fortawesome/fontawesome-svg-core": "^7.3.1",
     "@fortawesome/free-brands-svg-icons": "^7.3.1",