feat(03-01): install deps, migrate site config, add SMTP runtimeConfig, wrap UApp

- Install nodemailer, zod, @types/nodemailer
- Create app/data/site.ts with migrated siteConfig from src/config/site.ts
- Add SiteConfig, ContactInfo, SocialLink, FiverrService, FiverrConfig to shared/types
- Add smtpHost/smtpUser/smtpPass/smtpTo to private runtimeConfig
- Wrap app.vue with UApp for useToast() support

package.json

@@ -18,12 +18,15 @@
     "@nuxt/ui": "^3.0.0",
     "@nuxtjs/i18n": "^10.2.4",
     "@nuxtjs/sitemap": "^8.0.12",
+    "nodemailer": "^8.0.5",
     "nuxt": "^4.0.0",
     "nuxt-gtag": "^4.1.0",
     "vue": "latest",
-    "vue-router": "latest"
+    "vue-router": "latest",
+    "zod": "^4.3.6"
   },
   "devDependencies": {
+    "@types/nodemailer": "^8.0.0",
     "tailwindcss": "^4.2.2",
     "typescript": "~5.8.0"
   },