homepage: make '/' the canonical route, 301 /home-page → /

Previous state: '/' was 307-redirected to '/home-page', and the
home-page route declared canonical='/home-page'. Net effect on
SEO: Google indexed '/home-page' as the canonical homepage and
treated '/' as a transient redirect (no link equity passed).

Changes:
- next.config.mjs: replace the source:'/' destination:'/home-page'
  temporary redirect with source:'/home-page' destination:'/'
  permanent (301). Any existing crawler entry for /home-page now
  consolidates onto '/'.
- src/app/page.tsx (new): re-exports default + metadata from
  ./home-page/page so '/' serves the homepage directly. No file
  moves required, no relative-import breakage in the home-page
  component subtree.
- src/app/home-page/page.tsx: canonical and openGraph.url
  '/home-page' → '/'. The page still builds at /home-page but
  the 301 above will redirect any hit before render.
- src/app/sitemap.ts: drop the duplicate /home-page entry — Google
  shouldn't be told about a URL that just redirects.

next.config.mjs

@@ -50,11 +50,15 @@ const nextConfig = {
 
   async redirects() {
     return [
-      // Root redirect
+      // Homepage canonical: '/' is the real route now (src/app/page.tsx
+      // re-exports from src/app/home-page/page.tsx). The legacy
+      // /home-page URL gets a 301 permanent redirect to '/' so any
+      // crawler entry for /home-page consolidates link equity onto
+      // the canonical root.
       {
-        source: '/',
-        destination: '/home-page',
-        permanent: false,
+        source: '/home-page',
+        destination: '/',
+        permanent: true,
       },
       // WordPress admin redirects for broadcastbeat.com (301 permanent)
       {