Add signup block display

src/main/resources/static/css/styles.css

@@ -574,3 +574,32 @@ body {
     margin: 0;
     font-weight: 700;
 }
+
+.identity-row {
+    display: flex;
+    align-items: center;
+    gap: 12px;
+}
+
+.identity-text {
+    display: flex;
+    flex-direction: column;
+    gap: 2px;
+}
+
+.avatar {
+    width: 40px;
+    height: 40px;
+    border-radius: 50%;
+    object-fit: cover;
+    background: linear-gradient(135deg, #7c3aed, #4f46e5);
+    display: grid;
+    place-items: center;
+    font-weight: 700;
+    color: #e0e7ff;
+    text-transform: uppercase;
+}
+
+.avatar-fallback {
+    border: 1px solid rgba(255, 255, 255, 0.08);
+}

src/main/resources/static/js/dashboard.js

@@ -10,7 +10,35 @@ function renderAdmins(list) {
 
     list.forEach((admin) => {
         const li = document.createElement('li');
-        li.textContent = admin;
+        li.className = 'stacked-list-item';
+
+        const identity = document.createElement('div');
+        identity.className = 'identity-row';
+
+        const avatar = document.createElement(admin.avatarUrl ? 'img' : 'div');
+        avatar.className = 'avatar';
+        if (admin.avatarUrl) {
+            avatar.src = admin.avatarUrl;
+            avatar.alt = `${admin.displayName || admin.login} avatar`;
+        } else {
+            avatar.classList.add('avatar-fallback');
+            avatar.textContent = (admin.displayName || admin.login || '?').charAt(0).toUpperCase();
+        }
+
+        const details = document.createElement('div');
+        details.className = 'identity-text';
+        const title = document.createElement('p');
+        title.className = 'list-title';
+        title.textContent = admin.displayName || admin.login;
+        const subtitle = document.createElement('p');
+        subtitle.className = 'muted';
+        subtitle.textContent = `@${admin.login}`;
+
+        details.appendChild(title);
+        details.appendChild(subtitle);
+        identity.appendChild(avatar);
+        identity.appendChild(details);
+        li.appendChild(identity);
         adminList.appendChild(li);
     });
 }