build(config): switch to local Fontsource fonts for offline Blume builds

apps/docs/blume.config.ts

@@ -1,5 +1,24 @@
 import { defineConfig } from "blume";
 
+// Blume's defaults (`inter`, `ibm-plex-mono`) are fetched from fonts.gstatic.com
+// on every build, which has timed out on the Pages runner and, fully offline,
+// silently ships no fonts at all. The same two families from Fontsource, as
+// local files, keep the build network-free. Blume resolves `src` from this
+// directory; the workspace links these packages under ./node_modules.
+const inter = {
+  name: "Inter",
+  variants: [
+    { src: "./node_modules/@fontsource-variable/inter/files/inter-latin-wght-normal.woff2", weight: "100..900" },
+  ],
+};
+const plexMono = {
+  name: "IBM Plex Mono",
+  variants: [
+    { src: "./node_modules/@fontsource/ibm-plex-mono/files/ibm-plex-mono-latin-400-normal.woff2", weight: 400 },
+    { src: "./node_modules/@fontsource/ibm-plex-mono/files/ibm-plex-mono-latin-500-normal.woff2", weight: 500 },
+  ],
+};
+
 export default defineConfig({
   title: "Leetcode",
   description: "Documentation for LeetCode solutions",
@@ -11,6 +30,9 @@ export default defineConfig({
   content: {
     root: "content",
   },
+  theme: {
+    fonts: { display: inter, body: inter, mono: plexMono },
+  },
   navigation: {
     sidebar: {
       display: "flat", // "flat" | "group" | "page"

apps/docs/package.json

@@ -11,5 +11,9 @@
     "blume": "^2.0.1",
     "react": "^19.2.8",
     "react-dom": "^19.2.8"
+  },
+  "devDependencies": {
+    "@fontsource-variable/inter": "^5.3.0",
+    "@fontsource/ibm-plex-mono": "^5.3.0"
   }
 }