feat(web): complete MVP0 public layout, banner, and SEO baseline

apps/web/src/messages/en.json

@@ -15,5 +15,31 @@
       "es": "Spanish",
       "fr": "French"
     }
+  },
+  "Layout": {
+    "brand": "CMS Web",
+    "nav": {
+      "home": "Home",
+      "about": "About",
+      "contact": "Contact"
+    },
+    "footer": {
+      "copyright": "© {year} CMS Web",
+      "tagline": "Powered by Next.js, Bun, Prisma, and TanStack."
+    }
+  },
+  "Seo": {
+    "title": "CMS Web",
+    "description": "Public frontend for the CMS monorepo."
+  },
+  "About": {
+    "badge": "About",
+    "title": "About this project",
+    "description": "This public app is the frontend surface for CMS-driven content and upcoming dynamic pages."
+  },
+  "Contact": {
+    "badge": "Contact",
+    "title": "Contact",
+    "description": "Contact and commission flows will be introduced in upcoming MVP steps."
   }
 }