修复了导入bug

src/lib/export.ts

@@ -1,48 +1,9 @@
-import TurndownService from "turndown";
 import JSZip from "jszip";
 import { saveAs } from "file-saver";
 import { Page } from "./store";
 import { useSettingsStore } from "./settings-store";
 import { sanitizeFilename } from "./page-utils";
-
-import { gfm } from "turndown-plugin-gfm";
-
-// Initialize Turndown service
-const turndownService = new TurndownService({
-    headingStyle: "atx",
-    codeBlockStyle: "fenced",
-    bulletListMarker: "-",
-});
-
-// Use GFM plugin for tables
-turndownService.use(gfm);
-
-// Configure Turndown to handle some common elements better if needed
-turndownService.addRule('strikethrough', {
-    filter: ['del', 's'],
-    replacement: function (content: string) {
-        return '~~' + content + '~~';
-    }
-});
-
-// Task List Support (Simple)
-turndownService.addRule('taskListItems', {
-    filter: function (node: HTMLElement) {
-        return node.nodeName === 'LI' && node.className.includes('task-list-item');
-    },
-    replacement: function (content: string, node: HTMLElement) {
-        const isChecked = node.getAttribute('data-checked') === 'true';
-        return (isChecked ? '- [x] ' : '- [ ] ') + content.replace(/^- /, '') + '\n';
-    }
-});
-
-/**
- * Converts HTML content to Markdown
- */
-export function htmlToMarkdown(html: string): string {
-    if (!html) return "";
-    return turndownService.turndown(html);
-}
+import { htmlToMarkdown } from "./markdown-codec";
 
 // Helper to escape YAML strings
 function escapeYamlString(str: string): string {
@@ -179,4 +140,3 @@ function addPagesToZipRecursive(currentFolder: JSZip, parentId: string | null, a
         }
     });
 }
-