fix(remote): 调整传输队列默认高度，优化按钮夜间模式样式

src/modules/remote/components/file-transfer/RemoteFilePanel.tsx

@@ -202,7 +202,7 @@ export const RemoteFilePanel: React.FC<RemoteFilePanelProps> = ({
         <button
           onClick={onDownload}
           disabled={!selectedFile || disabled}
-          className="w-full flex items-center justify-center gap-2 px-4 py-2 bg-gray-600 hover:bg-gray-700 disabled:bg-gray-400 dark:disabled:bg-gray-700 dark:disabled:text-gray-500 text-white rounded-lg transition-colors"
+          className="w-full flex items-center justify-center gap-2 px-4 py-2 bg-white hover:bg-gray-200 disabled:bg-gray-200 text-gray-700 rounded-lg transition-colors border border-gray-300 dark:bg-gray-600 dark:hover:bg-gray-500 dark:disabled:bg-gray-700 dark:disabled:text-gray-500 dark:text-gray-200 dark:border-gray-500"
         >
           <span>↓</span>
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