feat: 实现供水运营专题大屏BI可视化

- 新增OperationDashboard.vue全屏大屏组件
- 添加6个核心KPI指标卡片: 进水总量/出水总量/产销差率/营收额/平均水质/报警次数
- 实现6个ECharts图表: 供水趋势/水质分布/报警统计/管网空间/设备状态/营收分析
- 创建静态HTML版本operation-dashboard.html，使用CDN加载Vue3/ECharts/Element Plus
- 更新路由配置，添加/operation路径支持
- 修复nextTick导入问题，优化build脚本

🚧 开发者: bot_dev1
📝 任务: #38 [BI] 运营仪表盘 + 供水专题大屏

frontend/node_modules/postcss/lib/comment.d.ts

@@ -0,0 +1,67 @@
+import Container from './container.js'
+import Node, { NodeProps } from './node.js'
+
+declare namespace Comment {
+  export interface CommentRaws extends Record<string, unknown> {
+    /**
+     * The space symbols before the node.
+     */
+    before?: string
+
+    /**
+     * The space symbols between `/*` and the comment’s text.
+     */
+    left?: string
+
+    /**
+     * The space symbols between the comment’s text.
+     */
+    right?: string
+  }
+
+  export interface CommentProps extends NodeProps {
+    /** Information used to generate byte-to-byte equal node string as it was in the origin input. */
+    raws?: CommentRaws
+    /** Content of the comment. */
+    text: string
+  }
+
+  export { Comment_ as default }
+}
+
+/**
+ * It represents a class that handles
+ * [CSS comments](https://developer.mozilla.org/en-US/docs/Web/CSS/Comments)
+ *
+ * ```js
+ * Once (root, { Comment }) {
+ *   const note = new Comment({ text: 'Note: …' })
+ *   root.append(note)
+ * }
+ * ```
+ *
+ * Remember that CSS comments inside selectors, at-rule parameters,
+ * or declaration values will be stored in the `raws` properties
+ * explained above.
+ */
+declare class Comment_ extends Node {
+  parent: Container | undefined
+  raws: Comment.CommentRaws
+  type: 'comment'
+  /**
+   * The comment's text.
+   */
+  get text(): string
+
+  set text(value: string)
+
+  constructor(defaults?: Comment.CommentProps)
+  assign(overrides: Comment.CommentProps | object): this
+  clone(overrides?: Partial<Comment.CommentProps>): this
+  cloneAfter(overrides?: Partial<Comment.CommentProps>): this
+  cloneBefore(overrides?: Partial<Comment.CommentProps>): this
+}
+
+declare class Comment extends Comment_ {}
+
+export = Comment