fix: admin reset-pwd button copies full bincio.org link instead of bare code

site/src/pages/admin/index.astro

@@ -1,5 +1,6 @@
 ---
 import Base from '../../layouts/Base.astro';
+const authUrl = import.meta.env.PUBLIC_AUTH_URL ?? '';
 ---
 <Base title="Admin — BincioActivity">
   <div class="max-w-3xl mx-auto px-4 py-10">
@@ -112,7 +113,7 @@ import Base from '../../layouts/Base.astro';
   </div>
 </Base>
 
-<script>
+<script define:vars={{ authUrl }}>
   const overviewEl  = document.getElementById('disk-overview')!;
   const tbodyEl     = document.getElementById('user-list')!;
   const dialog      = document.getElementById('confirm-dialog') as HTMLDialogElement;
@@ -403,10 +404,13 @@ import Base from '../../layouts/Base.astro';
           });
           const d = await r.json();
           if (r.ok) {
-            btn.textContent = d.code;
-            btn.title = `Code for ${h} — valid 24 h. Click to copy.`;
-            btn.classList.add('text-yellow-300', 'font-mono');
-            btn.addEventListener('click', () => navigator.clipboard.writeText(d.code), { once: true });
+            const resetUrl = authUrl
+              ? `${authUrl}/reset-password/?code=${d.code}`
+              : `/reset-password/?code=${d.code}`;
+            btn.textContent = '🔗 Copy reset link';
+            btn.title = resetUrl;
+            btn.classList.add('text-yellow-300');
+            btn.addEventListener('click', () => navigator.clipboard.writeText(resetUrl), { once: true });
           } else {
             btn.textContent = 'Error';
             btn.classList.add('text-red-400');