fix:修复bug

index.html

@@ -280,7 +280,7 @@
       <div class="brand">Shadervault</div>
       <div class="header-right">
         <input id="search-input" class="search" placeholder="Search shaders..." />
-        <button id="manage-btn">管理内容</button>
+        <a href="./admin.html" style="text-decoration:none;"><button>管理后台</button></a>
       </div>
     </header>
     <div id="app">
@@ -312,26 +312,6 @@
       </div>
     </section>
 
-    <section id="manage-modal" class="modal" aria-hidden="true">
-      <div class="modal-card">
-        <div class="topbar">
-          <strong>Shader 内容管理</strong>
-          <div style="display:flex; gap:8px">
-            <button id="close-manage-btn">关闭</button>
-          </div>
-        </div>
-        <div class="modal-grid">
-          <input id="shader-name-input" placeholder="名称" />
-          <input id="shader-author-input" placeholder="作者（可选）" />
-          <textarea id="shader-code-input" placeholder="粘贴 GLSL，必须包含 mainImage"></textarea>
-        </div>
-        <div style="display:flex; gap:8px; margin-top:10px;">
-          <button id="save-shader-btn">保存到后端</button>
-          <button id="fill-example-btn">填入示例</button>
-        </div>
-        <div class="table" id="shader-admin-list"></div>
-      </div>
-    </section>
-    <script src="./frontend.js"></script>
+    <script src="./display.js"></script>
   </body>
 </html>