- DELETE /api/admin/users/{handle}/activities — deletes all activities/*.json, wipes _merged/ and

index.json, then triggers a rebuild. Admin-only.
  - /admin/ page — lists all users, each with a "Delete activities" button. Clicking asks for
  confirmation in a <dialog> before firing the request. Button shows "Deleted (N)" or an error inline.
  - "Admin" nav link — appears in the top-right for admins only, hidden for everyone else.

site/src/layouts/Base.astro

@@ -200,6 +200,13 @@ try {
               title=""
               class="text-xs px-2 py-0.5 rounded-full bg-amber-900/60 text-amber-300 border border-amber-700/50 animate-pulse cursor-default"
             ></span>
+            <!-- Admin link — hidden until confirmed admin -->
+            <a
+              id="nav-admin"
+              href={`${baseUrl}admin/`}
+              style="display:none"
+              class="text-xs text-zinc-500 hover:text-white transition-colors px-1"
+            >Admin</a>
 
             <!-- Logout button — hidden until logged in -->
             <button
@@ -484,8 +491,10 @@ try {
           const chk = document.getElementById('upload-keep-original');
           if (chk && user.store_originals_default) chk.checked = true;
 
-          // Admin: poll for active jobs and show a badge in the nav
+          // Admin: show admin link and poll for active jobs
           if (user.is_admin) {
+            const adminLink = document.getElementById('nav-admin');
+            if (adminLink) adminLink.style.display = '';
             const badge = document.getElementById('admin-jobs-badge');
             async function pollJobs() {
               try {