Add dedicated edition pages (server, workstation, cloud)

- Add /server, /workstation, /cloud routes with per-page SEO titles
- Extract shared nav, footer, and waitlist form into partials
- Nav links to edition pages with active-state highlighting; swap About/Security order
- Waitlist form pre-checks the current edition and adds a Cloud option
- Add page-hero variant, edition switcher, and active-nav styles
- Responsive fixes: nav wraps at 540px, waitlist checkboxes wrap on narrow screens

templates/partials/footer.html

@@ -0,0 +1,36 @@
+{{define "footer"}}
+<footer class="footer">
+    <div class="footer-grid">
+        <div class="footer-col">
+            <a href="/" class="footer-logo">Arcline Project</a>
+            <p>An open-source operating system for people who defend infrastructure. Hardened Debian base. Pre-configured security stack. Zero telemetry. Defense-ready.</p>
+        </div>
+        <div class="footer-col">
+            <h4>Editions</h4>
+            <ul>
+                <li><a href="/server">Server</a></li>
+                <li><a href="/workstation">Workstation</a></li>
+                <li><a href="/cloud">Cloud</a></li>
+            </ul>
+        </div>
+        <div class="footer-col">
+            <h4>Project</h4>
+            <ul>
+                <li><a href="/#about">About</a></li>
+                <li><a href="/#contribute">Contribute</a></li>
+                <li><a href="https://git.arcline.it">Source Code</a></li>
+            </ul>
+        </div>
+        <div class="footer-col">
+            <h4>Connect</h4>
+            <ul>
+                <li><a href="https://arcline.it">Arcline IT</a></li>
+                <li><a href="https://git.arcline.it">Git</a></li>
+            </ul>
+        </div>
+    </div>
+    <div class="footer-bottom">
+        <p>&copy; 2026 Arcline IT LLC. GPL Licensed. No telemetry. No tracking.</p>
+    </div>
+</footer>
+{{end}}