feat(加强兼容): 支持多文档

assets/webui/index.html

@@ -597,6 +597,7 @@
 					<button id="infoButton" class="small-button" type="button" aria-label="修改文档信息" aria-haspopup="dialog" aria-controls="infoPanel" hidden>修改</button>
 				</div>
 				<div id="editNotice" class="font-permission-hint" role="status" hidden></div>
+				<select id="documentSelect" class="document-select" aria-label="选择文档" title="切换文档" hidden></select>
 				<dl class="meta-list">
 					<div>
 						<dt>文件</dt>