feat: Preload critical fonts

This change preloads critical fonts to improve page load performance by breaking the request chain.

Author: neural-loop

data/fonts.toml

@@ -0,0 +1,8 @@
+# data/fonts.toml
+# List of critical fonts to preload. Paths are relative to the /assets directory.
+files = [
+  "fonts/inter-v19-latin-regular.woff2",
+  "fonts/inter-v19-latin-600.woff2",
+  "fonts/inter-v19-latin-700.woff2",
+  "fonts/roboto-slab-v35-latin-700.woff2"
+]

layouts/partials/essentials/head.html

@@ -64,6 +64,12 @@
 <link rel="icon" type="image/png" sizes="16x16" href="/favicon-16x16.png">
 <link rel="apple-touch-icon" sizes="180x180" href="/apple-touch-icon.png">
 <link rel="icon" type="image/png" sizes="32x32" href="/favicon-32x32.png">
+{{/* Preload critical fonts to break the request chain */}}
+{{ range site.Data.fonts.files }}
+  {{ with resources.Get . }}
+    <link rel="preload" href="{{ .RelPermalink }}" as="font" type="font/woff2" crossorigin>
+  {{ end }}
+{{ end }}
 
 <!-- opengraph and twitter card -->
 {{ partial "components/base-seo.html" . }}