lint: add script to check deadlinks

scripts/checkLinks.mjs

@@ -0,0 +1,64 @@
+import fs from 'fs';
+import path from 'path';
+import { fileURLToPath } from 'url';
+
+const __filename = fileURLToPath(import.meta.url);
+const __dirname = path.dirname(__filename);
+
+const extractLinks = (content) => {
+  const linkRegex = /link:\s*'([^']+)'/g;
+  const links = [];
+  let match;
+  while ((match = linkRegex.exec(content)) !== null) {
+    links.push(match[1]);
+  }
+  return links;
+}
+
+const fileExists = (filePath) => {
+  try {
+    return fs.existsSync(filePath);
+  } catch (err) {
+    return false;
+  }
+}
+
+const checkLink = (link) => {
+  if (link.startsWith('http')) {
+    return true;
+  }
+
+  const basePath = path.join(__dirname, '../main');
+  const cleanLink = link.replace(/^\//, '').replace(/\/$/, '');
+
+  // Check for index.md in directory
+  const indexPath = path.join(basePath, cleanLink, 'index.md');
+  if (fileExists(indexPath)) {
+    return true;
+  }
+
+  // Check for .md file
+  const mdPath = path.join(basePath, `${cleanLink}.md`);
+  if (fileExists(mdPath)) {
+    return true;
+  }
+
+  return false;
+}
+
+const navContent = fs.readFileSync(path.join(__dirname, '../main/.vitepress/themeConfig/nav.js'), 'utf8');
+const configContent = fs.readFileSync(path.join(__dirname, '../main/.vitepress/config.mjs'), 'utf8');
+
+const navLinks = extractLinks(navContent);
+const configLinks = extractLinks(configContent);
+const allLinks = [...new Set([...navLinks, ...configLinks])];
+
+const deadLinks = allLinks.filter(link => !checkLink(link));
+
+if (deadLinks.length > 0) {
+  console.error('Dead links found:');
+  deadLinks.forEach(link => console.error(link));
+  process.exit(1);
+} else {
+  console.log('All links are valid.');
+}