Phase 1 #20 #23: 通用模块 + Vue3 前端框架搭建

#20 通用模块:
- MinioService: MinIO 文件上传/下载/桶管理
- @DataScope 注解: 数据权限切片
- ExcelUtils: EasyExcel 导出
- IdUtils: Snowflake ID 生成器
- BaseEntity: MyBatis-Plus 基础实体

#23 前端框架:
- Vue3 + TypeScript + Vite + Element Plus + ECharts + Pinia
- 路由系统: 登录守卫 + 动态路由
- 登录页: 渐变背景 + Axios+Sa-Token 认证
- 仪表盘: 统计卡片 + 供水趋势折线图 + 片区饼图
- MainLayout: 侧边栏菜单 + 顶栏用户下拉(退出)
- API 层: Axios 请求/响应拦截器 + Token 自动注入
- 系统管理骨架: 用户/角色/菜单/部门 列表页

frontend/package.json

@@ -0,0 +1,31 @@
+{
+  "name": "water-management-frontend",
+  "version": "1.0.0",
+  "private": true,
+  "scripts": {
+    "dev": "vite",
+    "build": "vue-tsc && vite build",
+    "preview": "vite preview"
+  },
+  "dependencies": {
+    "vue": "^3.5.0",
+    "vue-router": "^4.4.0",
+    "pinia": "^2.2.0",
+    "axios": "^1.7.0",
+    "element-plus": "^2.8.0",
+    "@element-plus/icons-vue": "^2.3.0",
+    "echarts": "^5.5.0",
+    "leaflet": "^1.9.0",
+    "cesium": "^1.120.0"
+  },
+  "devDependencies": {
+    "typescript": "^5.5.0",
+    "vite": "^5.4.0",
+    "vue-tsc": "^2.0.0",
+    "@types/leaflet": "^1.9.0",
+    "sass": "^1.77.0",
+    "unplugin-auto-import": "^0.17.0",
+    "unplugin-vue-components": "^0.27.0",
+    "vite-plugin-compression": "^0.5.0"
+  }
+}