✨feature: Style add page and add sidebar

src/components/Sidebar.astro

@@ -3,19 +3,13 @@
 ---
 
 <aside class="w-64 border-r h-full p-4 text-gray-100">
-  <h2 class="text-lg font-semibold mb-4">Prompt Types</h2>
+  <h2 class="text-lg font-semibold mb-4">Add a prompt</h2>
 
-  <ul class="space-y-2">
-    <li>
-      <button class="w-full text-left bg-blue-100 text-blue-700 px-3 py-2 rounded hover:bg-blue-200">
-        System
-      </button>
-    </li>
+  <p class="text-sm mb-4">
+    Use the form to add a new AI prompt to the catalog.
 
-    <li>
-      <button class="w-full text-left bg-green-100 text-green-700 px-3 py-2 rounded hover:bg-green-200">
-        Task
-      </button>
-    </li>
-  </ul>
+    Make sure to include a title, type, description, and any relevant tags.
+
+    You can also add notes for your own reference.
+  </p>
 </aside>