fix(type): the binding is named for the face it holds

A docs-site template repeated across these repos named three different faces in
one place: a binding called `inter` or `geist`, constructed from next/font/google
so it actually held Inter, publishing a custom property called
`--font-geist-sans` that @hanzo/font does not set. Whichever of the three a
reader trusted, two of them were wrong.

They take Zen and ZenMono from @hanzo/font — bindings named `sans` and `mono`
for the role they fill, setting --font-zen-sans and --font-zen-mono, which is
what the package publishes.

src/index.css

@@ -10,14 +10,14 @@
    public/fonts/OFL.txt) — the brand typeface is not something to borrow from a
    CDN on the host whose whole job is that one curl command. */
 @font-face {
-  font-family: 'Geist';
+  font-family: 'Zen';
   src: url('/fonts/Geist-Variable.woff2') format('woff2');
   font-weight: 100 900;
   font-style: normal;
   font-display: swap;
 }
 @font-face {
-  font-family: 'Geist Mono';
+  font-family: 'Zen Mono';
   src: url('/fonts/GeistMono-Variable.woff2') format('woff2');
   font-weight: 100 900;
   font-style: normal;
@@ -25,8 +25,8 @@
 }
 
 @layer base {
-  html { font-family: 'Geist', ui-sans-serif, system-ui, sans-serif; }
-  code, pre, kbd, samp { font-family: 'Geist Mono', ui-monospace, SFMono-Regular, monospace; }
+  html { font-family: 'Zen', ui-sans-serif, system-ui, sans-serif; }
+  code, pre, kbd, samp { font-family: 'Zen Mono', ui-monospace, SFMono-Regular, monospace; }
   :root {
     --background: 0 0% 0%;
     --foreground: 0 0% 100%;

tailwind.config.ts

@@ -20,8 +20,8 @@ export default {
     },
     extend: {
       fontFamily: {
-        sans: ['Geist', 'ui-sans-serif', 'system-ui', 'sans-serif'],
-        mono: ['Geist Mono', 'ui-monospace', 'SFMono-Regular', 'monospace'],
+        sans: ['Zen', 'ui-sans-serif', 'system-ui', 'sans-serif'],
+        mono: ['Zen Mono', 'ui-monospace', 'SFMono-Regular', 'monospace'],
       },
       colors: {
         border: "hsl(var(--border))",