Add Next.js project with internationalization support

- Set up Next.js 15 with TypeScript, ESLint, and Tailwind CSS
- Add i18n support for Korean, English, and Japanese
- Implement language switcher and navigation components
- Update .gitignore to exclude node_modules, IDE files, and build artifacts

🤖 Generated with [Claude Code](https://claude.com/claude-code)

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

package.json

@@ -0,0 +1,30 @@
+{
+  "name": "sma-next-project",
+  "version": "0.1.0",
+  "private": true,
+  "scripts": {
+    "dev": "next dev",
+    "build": "next build",
+    "start": "next start",
+    "lint": "eslint"
+  },
+  "dependencies": {
+    "@hookform/resolvers": "^5.2.2",
+    "next": "^15.5.6",
+    "next-intl": "^4.4.0",
+    "react": "19.2.0",
+    "react-dom": "19.2.0",
+    "react-hook-form": "^7.66.0",
+    "zod": "^4.1.12"
+  },
+  "devDependencies": {
+    "@tailwindcss/postcss": "^4",
+    "@types/node": "^20",
+    "@types/react": "^19",
+    "@types/react-dom": "^19",
+    "eslint": "^9",
+    "eslint-config-next": "^15.5.6",
+    "tailwindcss": "^4",
+    "typescript": "^5"
+  }
+}