Add standard NPM automation

- Prettier for code formatting
- ESLint for linting
- Standard configuration files

🤖 Generated with Claude Code

.eslintrc.json

@@ -0,0 +1,11 @@
+{
+  "extends": ["eslint:recommended"],
+  "env": {
+    "node": true,
+    "es2021": true
+  },
+  "parserOptions": {
+    "ecmaVersion": "latest",
+    "sourceType": "module"
+  }
+}

.prettierrc

@@ -0,0 +1,6 @@
+{
+  "semi": true,
+  "singleQuote": true,
+  "tabWidth": 2,
+  "trailingComma": "es5"
+}

package.json

@@ -25,6 +25,7 @@
     "@types/react-dom": "^19",
     "eslint": "^9",
     "eslint-config-next": "16.1.1",
+    "prettier": "^3.7.4",
     "tailwindcss": "^4",
     "typescript": "^5"
   }