feat(config): enable narration, SEO, and agents settings in Blume config

apps/docs/blume.config.ts

@@ -120,11 +120,24 @@ export default defineConfig({
     owner: "prdlk",
     repo: "leetcode",
   },
+  narration: true,
   lastModified: "git",
   redirects,
   frontmatter: {
     extend: { topics: topicsSchema, video: videoSchema, list: listSchema },
   },
+  seo: {
+    og: { enabled: true },
+    rss: { enabled: true, types: ["changelog"] },
+    sitemap: true,
+    robots: true,
+    structuredData: true,
+    x: { handle: "@prdlk" },
+  },
+  agents: {
+    llmsTxt: true,
+    mcp: { enabled: false },
+  },
   content: {
     sources: [
       filesystem({ root: "content" }),