fix: connect Sanity CMS data to live site with revalidation

- Disable Sanity CDN cache so published changes appear immediately
- Add revalidate=60 to page so Next.js refreshes data every 60s
- Wire AboutMe component to use siteSettings from Sanity (name, bio,
  photo, address, map coordinates)

https://claude.ai/code/session_01H2aRGDaKgarPvhay2HxN6Y

lib/sanity/client.ts

@@ -9,7 +9,7 @@ export const sanityClient: SanityClient | null = projectId
       projectId,
       dataset: process.env.NEXT_PUBLIC_SANITY_DATASET || "production",
       apiVersion: "2024-01-01",
-      useCdn: true,
+      useCdn: false,
     })
   : null;