feat: add creator coupons and portal lint

frontend/portal/package.json

@@ -6,6 +6,7 @@
   "scripts": {
     "dev": "vite",
     "build": "vite build",
+    "lint": "eslint . --ext .vue,.js,.jsx,.cjs,.mjs --fix --ignore-path .gitignore",
     "preview": "vite preview"
   },
   "dependencies": {
@@ -23,6 +24,10 @@
     "vuedraggable": "^4.1.0"
   },
   "devDependencies": {
+    "@rushstack/eslint-patch": "^1.8.0",
+    "@vue/eslint-config-prettier": "^9.0.0",
+    "eslint": "^8.57.0",
+    "eslint-plugin-vue": "^9.23.0",
     "@vitejs/plugin-vue": "^6.0.1",
     "vite": "^7.2.4"
   }