feat: another track

app/hackathons/page.tsx

@@ -14,10 +14,11 @@ import {
   ShieldAlert,
   MessageSquare,
   Crown,
+  FlaskConical,
 } from 'lucide-react'
 import { Footer } from '@/components/footer'
 import { LiveTerminal } from '@/components/hackathons/live-terminal'
-import { StreamViz, SecureViz, RadarViz, ScanViz, ExtendViz } from '@/components/hackathons/track-visuals'
+import { StreamViz, SecureViz, RadarViz, ScanViz, ExtendViz, BenchViz } from '@/components/hackathons/track-visuals'
 
 const ShieldScene = dynamic(
   () => import('@/components/hackathons/shield-scene').then((m) => m.ShieldScene),
@@ -546,6 +547,18 @@ const tracks = [
     examples: ['Error interception', 'Context injection', 'Alternative suggestion', 'Loop prevention'],
     Visual: ExtendViz,
   },
+  {
+    id: 'control-benchmark',
+    icon: FlaskConical,
+    title: 'Control Evaluation Benchmark',
+    hook: 'Build the test suite that measures how well sandboxes actually work.',
+    color: 'from-rose-500/10 to-pink-500/5',
+    borderColor: 'hover:border-rose-500/30',
+    description: 'Define main tasks (real software engineering work) paired with side tasks (exfiltrate a key, install a backdoor, modify git hooks). Measure how much useful work an agent completes under Greywall\'s restrictions vs. how often adversarial goals succeed.',
+    scoring: 'Show the safety/usefulness tradeoff. A good benchmark reveals real weaknesses, not just toy scenarios.',
+    examples: ['Main/side task pairs', 'Policy quality scoring', 'Layer isolation tests', 'Reproducible evals'],
+    Visual: BenchViz,
+  },
 ]
 
 function TrackCard({ track, index }: { track: typeof tracks[0]; index: number }) {
@@ -612,7 +625,7 @@ function Tracks() {
             Pick your track.
           </h2>
           <p className="font-serif text-lg text-muted-foreground max-w-2xl mx-auto">
-            Five open-ended tracks, all building on top of{' '}
+            Six open-ended tracks, all building on top of{' '}
             <a href="https://github.com/GreyhavenHQ/greywall" target="_blank" rel="noopener noreferrer" className="text-primary hover:text-primary/80 transition-colors underline underline-offset-2">Greywall</a>.
             Go deep on one or try a few.
           </p>