Fix reader.html: Use parseFloat instead of parseInt to support decimal chapters

alacarte-novel-website/reader.html

@@ -423,9 +423,9 @@
 
     <script src="js/app.js?v=5"></script>
     <script>
-        // 获取URL参数中的章节ID
+        // 获取URL参数中的章节ID（支持小数章节）
         const urlParams = new URLSearchParams(window.location.search);
-        let currentChapter = parseInt(urlParams.get('id')) || 1;
+        let currentChapter = parseFloat(urlParams.get('id')) || 1;
         
         // 获取带缓存禁用的时间戳
         function getCacheBuster() {