docs: import TRM design handoff + defer adoption to phase 3.8

A design handoff bundle generated by Claude Design (claude.ai/design)
on 2026-05-02. Defines the Bloomberg/F1-pit-wall aesthetic for TRM:
- ink-on-paper base + race-flag red accent (#E8412B)
- square-edged everything, sharp printed offset shadows
- mono numerics (JetBrains Mono) for any changing value
- Goldplay (real licensed font, three weights in bundle fonts/)
- four surfaces designed: dashboard / leaderboard / mobile / marketing
  (SPA scope is the first two)

The bundle is committed in-tree at TRM_Design_System-handoff/ so 3.8
has the full source material when it picks the work up. Includes:
- Top-level + project READMEs (the design spec)
- chats/chat1.md (intent + iteration history)
- colors_and_type.css (token set, drop-in for Tailwind 4 @theme)
- fonts/ (Goldplay regular/semibold/bold)
- ui_kits/ (HTML prototypes per surface)
- preview/ (per-token visual reference cards)

Updated phase-3-dogfood-readiness/README.md task 3.8 row to point at
the bundle and document the recommended approach (retheme shadcn via
CSS variable overrides + Tailwind 4 @theme, not replace).

Why deferred: foundational tokens are non-blocking for Phase 1 (login
+ placeholder home) and Phase 2 (live map without chrome). Applying
them now would either delay dogfood-blocking work or land partial
styling that gets reworked when 3.8 lands the full pass.

TRM_Design_System-handoff/trm-design-system/project/ui_kits/leaderboard/HeroClock.jsx

@@ -0,0 +1,22 @@
+function HeroClock({ time, eventName, sport, distance, weather }) {
+  return (
+    <div style={{ display: 'grid', gridTemplateColumns: '1fr auto', alignItems: 'center', padding: '24px 32px', borderBottom: '1px solid var(--night-line)' }}>
+      <div>
+        <div style={{ display: 'flex', alignItems: 'center', gap: 14 }}>
+          <img src="../../assets/logo-trm.png" alt="TRM" style={{ height: 26, filter: 'invert(1) brightness(1.1)' }} />
+          <span style={{ fontFamily: 'var(--font-mono)', fontSize: 11, color: 'var(--night-fg-3)', letterSpacing: '0.10em', textTransform: 'uppercase' }}>Live tracking</span>
+          <span className="pill live"><span className="dot"></span>LIVE</span>
+        </div>
+        <div style={{ fontFamily: 'var(--font-display)', fontSize: 32, fontWeight: 700, marginTop: 14, letterSpacing: '-0.02em' }}>{eventName}</div>
+        <div style={{ fontFamily: 'var(--font-mono)', fontSize: 13, color: 'var(--night-fg-2)', marginTop: 8, letterSpacing: '0.04em' }}>
+          {sport} · {distance} · {weather}
+        </div>
+      </div>
+      <div style={{ textAlign: 'right' }}>
+        <div style={{ fontFamily: 'var(--font-mono)', fontSize: 11, color: 'var(--night-fg-3)', letterSpacing: '0.10em', textTransform: 'uppercase' }}>Race clock</div>
+        <div style={{ fontFamily: 'var(--font-mono)', fontVariantNumeric: 'tabular-nums', fontSize: 96, fontWeight: 600, letterSpacing: '-0.04em', lineHeight: 1, marginTop: 6 }}>{time}</div>
+      </div>
+    </div>
+  );
+}
+window.HeroClock = HeroClock;