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/dashboard/RaceControl.jsx

@@ -0,0 +1,58 @@
+function RaceControl({ leaders, alerts, mats }) {
+  return (
+    <div style={{ display: 'grid', gridTemplateColumns: '1.4fr 1fr', gap: 16 }}>
+      <div className="card">
+        <div className="card-head">
+          <h3>Live leaderboard · Coastline 10K</h3>
+          <span className="pill live" style={{ marginLeft: 'auto' }}><span className="dot"></span>LIVE</span>
+          <span style={{ fontFamily: 'var(--font-mono)', fontVariantNumeric: 'tabular-nums', fontSize: 14, fontWeight: 600 }}>00:42:18.4</span>
+        </div>
+        <table className="lb">
+          <thead>
+            <tr>
+              <th style={{ width: 36 }}>POS</th>
+              <th style={{ width: 50 }}>BIB</th>
+              <th>NAME</th>
+              <th>WAVE</th>
+              <th className="num">SPLIT 3</th>
+              <th className="num">GAP</th>
+              <th className="num">PACE</th>
+            </tr>
+          </thead>
+          <tbody>
+            {leaders.map(l => (
+              <tr key={l.pos}>
+                <td style={{ fontWeight: 700, color: l.pos === 1 ? 'var(--flag)' : 'var(--ink)' }}>{l.pos}</td>
+                <td>{l.bib}</td>
+                <td className="name">{l.name}</td>
+                <td>{l.wave}</td>
+                <td className="num">{l.split}</td>
+                <td className={'num ' + (l.gap === '—' ? '' : 'loss')}>{l.gap}</td>
+                <td className="num">{l.pace}</td>
+              </tr>
+            ))}
+          </tbody>
+        </table>
+      </div>
+      <div style={{ display: 'flex', flexDirection: 'column', gap: 16 }}>
+        <div className="card">
+          <div className="card-head"><h3>Timing mats</h3></div>
+          <div style={{ padding: 14, display: 'grid', gridTemplateColumns: 'repeat(2, 1fr)', gap: 8 }}>
+            {mats.map(m => (
+              <div key={m.id} style={{ border: '1px solid var(--hairline)', padding: '8px 10px', display: 'flex', alignItems: 'center', gap: 10 }}>
+                <span className="dot" style={{ width: 8, height: 8, borderRadius: 999, background: m.online ? 'var(--green)' : 'var(--flag)', display: 'inline-block' }}></span>
+                <div style={{ flex: 1 }}>
+                  <div style={{ fontFamily: 'var(--font-display)', fontSize: 12, fontWeight: 600 }}>{m.name}</div>
+                  <div style={{ fontFamily: 'var(--font-mono)', fontSize: 10, color: 'var(--ink-4)' }}>{m.id} · {m.km} km</div>
+                </div>
+                <span style={{ fontFamily: 'var(--font-mono)', fontSize: 11, color: 'var(--ink-3)' }}>{m.reads}</span>
+              </div>
+            ))}
+          </div>
+        </div>
+        <AlertFeed alerts={alerts} />
+      </div>
+    </div>
+  );
+}
+window.RaceControl = RaceControl;