Sync latest signup app updates

src/app/signup-panel.tsx

@@ -137,11 +137,12 @@ export default function SignupPanel({ session }: SignupPanelProps) {
         <section className={styles.grid}>
           <article className={styles.panel}>
             <p className={styles.panelLabel}>What You&apos;re Signing Up For</p>
-            <h2 className={styles.panelTitle}>Three weeks of ML systems work aimed at the hardest kernel problems.</h2>
+            <h2 className={styles.panelTitle}>Your mission, should you choose to accept it...</h2>
             <ul className={styles.list}>
-              <li>Week 1: fundamental inference and onboarding through a fun optimization task.</li>
-              <li>Week 2: scaling production inference on the latest hardware.</li>
-              <li>Week 3: a frontier systems engineering challenge around state-of-the-art kernels.</li>
+              <li>1. Activate your free OpenAI credits.</li>
+              <li>2. Instruct Codex to optimize a Mac Metal kernel for a given task.</li>
+              <li>3. Submit your optimized kernel to Hugging Face Leaderboard.</li>
+              <li>4. Accept the final challenge.</li>
             </ul>
 
             {/* <div className={styles.noteBlock}>