Ignore draft directories in redirects

scripts/generate-redirects.js

@@ -16,6 +16,16 @@ const entries = fs.readdirSync(contentDir, { withFileTypes: true });
 for (const entry of entries) {
   if (entry.isDirectory()) {
     const slug = entry.name;
+    const postDir = path.join(contentDir, slug);
+    const hasPostFile = ['index.md', 'index.mdx'].some((file) => {
+      const postPath = path.join(postDir, file);
+      return fs.existsSync(postPath) && fs.statSync(postPath).isFile();
+    });
+
+    if (!hasPostFile) {
+      continue;
+    }
+
     redirects.push(`/${slug} /blog/${slug} 200`);
   }
 }