fix(website): clear WCAG AA across both themes, and stop the hero shifting

Contrast was measured, not eyeballed: 41 foreground/background pairs across
both themes and the terminal surface, each against the darkest (light) or
lightest (dark) surface it actually sits on. Five failed. Links on manila
read 3.64:1 and the footer's "No telemetry. Ever." — a claim the site goes
out of its way to make — sat at 2.86:1.

The accent needed splitting rather than moving. #c1502e clears 4.5:1 as a
button fill behind white but only 3.99:1 as an 11px eyebrow on vinyl, so
--accent keeps the brand hue for fills and a new --accent-text carries the
readable cut. The terminal gets the same treatment dark emulators give their
palettes: alarm and oxide brighten inside .tui-content so "Failed" is
legible next to its glyph.

Reduced motion no longer nukes everything. A blanket 0.01ms also kills the
transitions that answer a click, which is feedback rather than movement;
looping and travelling animation stops, the rest caps at 80ms. The TUI
already skipped its opening run and still does.

The hero reserves its box with aspect-ratio from the first paint. It was
prerendered at full unscaled height and collapsed once JS measured, moving
everything below it by ~145px. Measured shift is now 0.

Also: the webfont loads non-blocking (display=swap meant the first frame
never waited for it anyway), footer link groups nest under a heading instead
of sitting level with page sections, and eight tokens nothing referenced
stop shipping.

website/src/pages/home.tsx

@@ -22,7 +22,7 @@ const PLATFORMS: readonly { name: OsName; note: string; anchor: string }[] = [
 const FEATURES = [
   {
     glyph: '→',
-    color: 'var(--accent)',
+    color: 'var(--accent-text)',
     title: 'Search & download',
     cmd: 'soulseek-rs "field recordings"',
     body: <>Search the network, pick results in the TUI, and queue downloads with pause, resume, and retry.</>,
@@ -86,7 +86,7 @@ const FEATURES = [
   },
   {
     glyph: '▮',
-    color: 'var(--accent)',
+    color: 'var(--accent-text)',
     title: 'TUI and CLI',
     cmd: 'soulseek-rs',
     body: (
@@ -165,7 +165,7 @@ export const Home = () => {
                   >
                     <OsIcon name={platform.name} className="max-[519px]:size-[26px]" />
                     <span className="flex flex-col leading-[1.35] max-[519px]:hidden">
-                      <b className="text-[13.5px] font-medium text-primary transition-colors group-hover:text-accent">
+                      <b className="text-[13.5px] font-medium text-primary transition-colors group-hover:text-accent-text">
                         {platform.name}
                       </b>
                       <span className="text-[11.5px] text-secondary">{platform.note}</span>
@@ -251,7 +251,7 @@ export const Home = () => {
           <div className="flex flex-col gap-3.5">
             <Eyebrow>get started</Eyebrow>
             <h2 className="text-[26px] leading-[34px] font-medium text-balance sm:text-title sm:leading-[var(--text-title--line-height)]">
-              Install it, then press <span className="text-accent">/</span> to search.
+              Install it, then press <span className="text-accent-text">/</span> to search.
             </h2>
             <p className="text-secondary">
               Needs a Rust toolchain. From there it&rsquo;s one command, then the TUI opens.