move view shop link to top of admin sidebar

More prominent placement just below the header, removed from footer.
Footer now only has dev tools disclosure and log out.

Co-Authored-By: Claude Opus 4.6 <noreply@anthropic.com>

assets/css/admin/components.css

@@ -228,6 +228,11 @@
   font-size: 0.6875rem;
 }
 
+.admin-btn-block {
+  width: 100%;
+  justify-content: center;
+}
+
 .admin-btn-icon {
   padding: 0.5rem;
   aspect-ratio: 1;
@@ -3280,7 +3285,13 @@
   & .admin-text-secondary { margin-top: 0.125rem; }
 }
 
-/* Sidebar footer (view shop, log out) */
+/* View shop link below sidebar header */
+.admin-sidebar-view-shop {
+  padding: 0.5rem;
+  border-bottom: 1px solid var(--t-border-default);
+}
+
+/* Sidebar footer (dev tools, log out) */
 .admin-sidebar-footer {
   padding: 0.5rem;
   border-top: 1px solid var(--t-border-default);