Replace static Hello World with KenJim Technologies React app

- Vite + React frontend: hero, services grid, contact form
- Express + nodemailer backend for contact form → kenji@kenjim.com
- Multi-stage Docker builds; nginx inside frontend proxies /api to backend
- SMTP config via .env (see .env.example)

Co-Authored-By: Claude Sonnet 4.6 <noreply@anthropic.com>

frontend/package.json

@@ -0,0 +1,18 @@
+{
+  "name": "kenjim-technologies",
+  "version": "1.0.0",
+  "type": "module",
+  "scripts": {
+    "dev": "vite",
+    "build": "vite build",
+    "preview": "vite preview"
+  },
+  "dependencies": {
+    "react": "^18.3.1",
+    "react-dom": "^18.3.1"
+  },
+  "devDependencies": {
+    "@vitejs/plugin-react": "^4.3.1",
+    "vite": "^5.4.0"
+  }
+}