refactor(ai-optimized-editor):优化 AI 代码编辑器布局- 调整了编辑器组件的 CSS 类，使其充满整个可用空间

- 优化了 DiffEditor 和 Editor 组件的布局，使其在显示和隐藏时能正确占用空间
- 移除了不必要的高度属性，使编辑器能根据内容自适应高度

src/components/ai-optimized-editor.tsx

@@ -98,8 +98,8 @@ export function AIProblemEditor({
   }, [currentCode, problemId]);
 
   return (
-    <div className="space-y-4">
+    <div className="flex flex-col h-full w-full">
-      <div className="flex justify-between items-center">
+      <div className="flex justify-between items-center p-4">
         <button
           onClick={handleOptimizeCode}
           disabled={isOptimizing || !currentCode}
@@ -124,6 +124,7 @@ export function AIProblemEditor({
         </div>
       )}
 
+      <div className="flex-grow overflow-hidden">
         {showDiff ? (
           <DiffEditor
             original={currentCode}
@@ -138,7 +139,6 @@ export function AIProblemEditor({
           />
         ) : (
           <Editor
-          height="500px"
             language="typescript"
             theme="vs-dark"
             value={currentCode}
@@ -147,8 +147,10 @@ export function AIProblemEditor({
               scrollBeyondLastLine: false,
               fontSize: 14
             }}
+            className="h-full w-full"
           />
         )}
       </div>
+    </div>
   );
 }