Refactor post loading logic in AdminPage to separate filename and folder path; enhance edit button functionality for improved post management.

src/app/admin/page.tsx

@@ -789,7 +789,13 @@ export default function AdminPage() {
                     <div className="flex items-center gap-4">
                       <h3 className="text-xl font-semibold flex-1">{post.title}</h3>
                       <button
-                        onClick={() => loadPostRaw(post.slug, currentPath.join('/'))}
+                        onClick={() => {
+                          // Split post.slug into folder and filename
+                          const slugParts = post.slug.split('/');
+                          const filename = slugParts[slugParts.length - 1];
+                          const folder = slugParts.length > 1 ? slugParts.slice(0, -1).join('/') : currentPath.join('/');
+                          loadPostRaw(filename, folder);
+                        }}
                         className="px-4 py-2 bg-blue-600 text-white rounded hover:bg-blue-700 text-lg font-bold shadow focus:outline-none focus:ring-2 focus:ring-blue-400"
                       >
                         ✏️ Edit