chore(docs): upgrade geistdocs to 1.16.0

apps/docs/app/[lang]/layout.tsx

@@ -38,7 +38,7 @@ const Layout = async ({ children, params }: LayoutProps<"/[lang]">) => {
         <GeistdocsProvider basePath={config.basePath} lang={lang}>
           <Navbar config={config} />
           {children}
-          <Footer config={config} />
+          <Footer />
         </GeistdocsProvider>
       </body>
     </html>

apps/docs/app/styles/geistdocs.css

@@ -40,6 +40,10 @@
 }
 
 :root {
+  /* Geist Sans is loaded from the `geist` npm package, which exposes the
+     `--font-geist-sans` variable. Alias it so `font-sans`/`--font-sans`
+     resolves to it. */
+  --font-sans: var(--font-geist-sans);
   --radius: 0.625rem;
   --background: oklch(1 0 0);
   --foreground: oklch(0.145 0 0);

apps/docs/lib/geistdocs/fonts.ts

@@ -1,14 +1,11 @@
-import {
-  Geist_Mono as createMono,
-  Geist as createSans,
-} from "next/font/google";
+import { GeistSans } from "geist/font/sans";
+import { Geist_Mono as createMono } from "next/font/google";
 
-export const sans = createSans({
-  variable: "--font-sans",
-  subsets: ["latin"],
-  weight: "variable",
-  display: "swap",
-});
+// Geist Sans is loaded from the `geist` npm package (local woff2) rather than
+// Google Fonts so the full font-feature-settings — e.g. the `ss11` alternate
+// "I" enabled in the geistdocs theme — are available. The package hardcodes the
+// `--font-geist-sans` variable; it's aliased to `--font-sans` in geistdocs.css.
+export const sans = GeistSans;
 
 export const mono = createMono({
   variable: "--font-mono",

apps/docs/package.json

@@ -15,14 +15,15 @@
     "@streamdown/code": "^1.0.3",
     "@vercel/analytics": "^1.6.1",
     "@vercel/edge-config": "^1.4.3",
-    "@vercel/geistdocs": "1.15.5",
+    "@vercel/geistdocs": "1.16.0",
     "@vercel/speed-insights": "^1.3.1",
     "class-variance-authority": "^0.7.1",
     "clsx": "^2.1.1",
     "feed": "^5.1.0",
     "fumadocs-core": "16.2.2",
     "fumadocs-mdx": "14.0.4",
     "fumadocs-ui": "16.2.2",
+    "geist": "^1.7.1",
     "lucide-react": "^0.555.0",
     "motion": "^12.23.25",
     "next": "16.2.6",