feat: add section navigation and embedded Archify diagrams

src/pages/index.tsx

@@ -25,9 +25,9 @@ export default function Home(): React.ReactElement {
       <section className="start-section container" aria-labelledby="start-title">
         <div className="section-heading"><div><p className="eyebrow">START HERE</p><h2 id="start-title">A clear place to begin.</h2></div><span className="foundation-badge">Foundation · v1</span></div>
         <div className="start-grid">
-          <Link className="start-card" to="/docs/overview/"><span className="card-number">01 / OVERVIEW</span><h3>What’s here</h3><p>Understand the starting point and what remains to be decided.</p><span className="card-action">Read the overview <span aria-hidden="true">↗</span></span></Link>
-          <Link className="start-card" to="/docs/maintain/"><span className="card-number">02 / MAINTENANCE</span><h3>Make it your own</h3><p>Add a page, preview a change, and publish through the existing pipeline.</p><span className="card-action">Open the guide <span aria-hidden="true">↗</span></span></Link>
-          <Link className="start-card" to="/docs/reference/"><span className="card-number">03 / REFERENCE</span><h3>Under the hood</h3><p>Find the repository layout, build commands, and publication details.</p><span className="card-action">View the reference <span aria-hidden="true">↗</span></span></Link>
+          <Link className="start-card" to="/organization/structure/"><span className="card-number">01 / ORGANIZATION</span><h3>Organization</h3><p>Explore the structure workspace and its first interactive diagram.</p><span className="card-action">Explore structure <span aria-hidden="true">↗</span></span></Link>
+          <Link className="start-card" to="/strategy/"><span className="card-number">02 / STRATEGY</span><h3>Strategy</h3><p>Shape the direction for an AI-powered Eldorado.</p><span className="card-action">View the direction <span aria-hidden="true">↗</span></span></Link>
+          <Link className="start-card" to="/contribution/"><span className="card-number">03 / CONTRIBUTION</span><h3>Contribution</h3><p>Contribute evidence, proposals, documentation, and diagrams.</p><span className="card-action">Start contributing <span aria-hidden="true">↗</span></span></Link>
         </div>
         <aside className="scope-note"><span className="scope-symbol" aria-hidden="true">✦</span><div><strong>Shaping the direction.</strong><p>This space is dedicated to AI strategy and direction for Eldorado. Specific initiatives, priorities, and the roadmap remain to be defined.</p></div></aside>
       </section>