feat: add 52 per-tool SEO landing pages and public changelog (#145)

* feat: add 52 per-tool SEO landing pages and public changelog

- Create individual landing pages for all 52 tools at /tools/{slug}
  with search-intent title tags, unique FAQs (156 Q&As), per-tool
  features, and rich schema markup (BreadcrumbList, WebApplication,
  HowTo, FAQPage)
- Replace static sitemap.xml with dynamic generation including all
  tool URLs
- Refactor bento grid to import from @snapotter/shared (eliminates
  330 lines of duplicated tool data) and link cards to tool pages
- Add @snapotter/shared as workspace dependency to landing site
- Add public changelog page to docs site with curated release notes
  from v1.8 through v1.17
- Update docs nav and sidebar with changelog link

* feat: enhance SEO and performance with updated metadata, robots.txt, and llms.txt

apps/landing/next.config.ts

@@ -2,6 +2,13 @@ import type { NextConfig } from "next";
 
 const nextConfig: NextConfig = {
   output: "export",
+  transpilePackages: ["@snapotter/shared"],
+  webpack: (config) => {
+    config.resolve.extensionAlias = {
+      ".js": [".ts", ".tsx", ".js"],
+    };
+    return config;
+  },
 };
 
 export default nextConfig;