fix: slugging

src/data-loader/toc.ts

@@ -1,8 +1,11 @@
+import Slugger from "github-slugger";
+
 /**
  * 目录树节点
  */
 export interface TocNode {
   title: string;
+  id?: string;
   path?: string;
   level: number;
   children?: TocNode[];
@@ -24,6 +27,7 @@ export function extractHeadings(content: string): TocNode[] {
   const headings: TocNode[] = [];
   const lines = content.split("\n");
   const stack: { node: TocNode; level: number }[] = [];
+  const slugger = new Slugger();
 
   for (const line of lines) {
     const match = line.match(/^(#{1,6})\s+(.+)$/);
@@ -31,7 +35,9 @@ export function extractHeadings(content: string): TocNode[] {
 
     const level = match[1].length;
     const title = match[2].trim();
-    const node: TocNode = { title, level };
+    // 使用 github-slugger 生成 ID，与 marked-gfm-heading-id 保持一致
+    const id = slugger.slug(title.toLowerCase());
+    const node: TocNode = { title, id, level };
 
     // 找到合适的父节点
     while (stack.length > 0 && stack[stack.length - 1].level >= level) {