feat: establish Corp v1 Board portal

src/pages/index.tsx

@@ -31,6 +31,7 @@ const groups: PortalGroup[] = [
     links: [
       {label: 'Teams registry', to: '/teams/', description: 'Find teams and their responsibilities'},
       {label: 'Members registry', to: '/members/', description: 'Review governance roles and assignments'},
+      {label: 'Board members', to: '/board/', description: 'See who can start or close projects'},
     ],
   },
   {
@@ -38,8 +39,8 @@ const groups: PortalGroup[] = [
     title: 'Governance',
     description: 'Follow the decisions that authorize projects and preserve accountability as direction changes.',
     links: [
-      {label: 'Decision log', to: '/governance/decisions/', description: 'Read authoritative steering decisions'},
-      {label: 'Steering overview', to: '/overview/', description: 'Learn how this committee operates'},
+      {label: 'Decision log', to: '/governance/decisions/', description: 'Read authoritative Board decisions'},
+      {label: 'Board overview', to: '/overview/', description: 'Learn how Corp v1 governance operates'},
     ],
   },
 ];
@@ -74,8 +75,8 @@ function PortalCard({group}: {group: PortalGroup}): React.JSX.Element {
 export default function Home(): React.JSX.Element {
   return (
     <Layout
-      title="Corp v1 Steering Committee"
-      description="Authoritative project, team, member, and steering decision registry for Corp v1.">
+      title="Corp v1 Board"
+      description="Authoritative project, team, Board member, and governance decision registry for Corp v1.">
       <main className={styles.page}>
         <section className={styles.hero}>
           <div className={styles.gridTexture} aria-hidden="true" />
@@ -91,7 +92,7 @@ export default function Home(): React.JSX.Element {
             </div>
           </div>
           <div className={styles.heroRail} aria-label="Registry areas">
-            <span>PROJECTS</span><span>TEAMS</span><span>MEMBERS</span><span>DECISIONS</span>
+            <span>PROJECTS</span><span>TEAMS</span><span>BOARD</span><span>DECISIONS</span>
           </div>
         </section>