CTAO Science Portal: static Astro site with git-based CMS (Sveltia + Gitea)

Portal code only; editorial content lives in the ctao/content repo on the
demo machine's Gitea and is overlaid at build time (see README.md and
deploy/README.md). Live demo: https://astro.isl-dev.grid.cyfronet.pl

src/pages/dashboard.astro

@@ -0,0 +1,30 @@
+---
+import Base from '../layouts/Base.astro';
+// Per SPEC §3.3.2 the dashboard aggregates proposal statuses, data products
+// and help-desk tickets. No integrations exist yet, so panels show empty
+// states instead of fabricated sample rows (source-documents-only rule).
+---
+<Base title="CTAO Science Portal - Dashboard" description="User dashboard (mock)">
+  <section class="band--moon">
+    <header class="container page-head">
+      <h1>Dashboard</h1>
+      <p class="standfirst">Your proposals, data products and support tickets in one place.</p>
+    </header>
+    <div class="container page">
+    <div class="dash-grid">
+      <div class="panel">
+        <h2 class="panel-title">My proposals</h2>
+        <p class="notice">Proposal statuses will appear here once the Proposal Handling System (APC team) is connected.</p>
+      </div>
+      <div class="panel">
+        <h2 class="panel-title">Recent data products</h2>
+        <p class="notice">Your data products will appear here. Search and download in the <a href="https://padc-ctao-data-explorer.obspm.fr/" target="_blank" rel="noopener" class="external">Data Explorer</a> (external, LUX team).</p>
+      </div>
+      <div class="panel">
+        <h2 class="panel-title">Support tickets</h2>
+        <p class="notice">Help-desk tickets will appear here once User Support is connected.</p>
+      </div>
+    </div>
+    </div>
+  </section>
+</Base>