feat(前端界面): 未打开文件时页码统一显示为0/0

assets/webui/index.html

@@ -24,7 +24,7 @@
 			<div class="tool-group">
 				<button id="prevButton" class="icon-button" type="button" title="上一页" disabled>&lsaquo;</button>
 				<label class="page-control">
-					<input id="pageInput" type="number" min="1" value="1" disabled>
+					<input id="pageInput" type="number" min="1" value="0" disabled>
 					<span>/</span>
 					<span id="pageTotal">0</span>
 				</label>