feat(deploy): migrate to Cloudflare Pages, integrate Resend email API, and optimize contact form

package.json

@@ -12,10 +12,10 @@
     "astro": "astro"
   },
   "dependencies": {
+    "@astrojs/cloudflare": "^14.4.0",
     "@astrojs/node": "^11.0.2",
     "@astrojs/react": "^6.0.1",
     "@astrojs/sitemap": "^3.7.4",
-    "@astrojs/vercel": "^11.0.10",
     "@fontsource-variable/inter": "^5.3.0",
     "@fontsource-variable/jetbrains-mono": "^5.3.0",
     "@fontsource/dotgothic16": "^5.3.1",
@@ -29,17 +29,15 @@
     "@tailwindcss/vite": "^4.3.2",
     "@types/react": "^19.2.17",
     "@types/react-dom": "^19.2.3",
-    "@vercel/analytics": "^2.0.1",
     "astro": "^7.0.6",
     "framer-motion": "^12.42.2",
-    "nodemailer": "^10.0.9",
     "ogl": "^1.0.11",
     "react": "^19.2.7",
     "react-dom": "^19.2.7",
+    "resend": "^6.34.1",
     "tailwindcss": "^4.3.2"
   },
   "devDependencies": {
-    "@types/nodemailer": "^8.0.1",
     "@vitejs/plugin-basic-ssl": "^2.3.0"
   }
 }