refactor(tiantian-system): 重构系统首页界面与布局

- 使用侧边栏布局替换顶部欢迎区，提升导航体验
- 重新设计快捷入口，采用按钮网格样式
- 添加待办事项模块，方便任务管理和提醒
- 优化应用模块展示，支持点击跳转应用管理界面
- 增加经营概览和最新公告两个信息展示模块
- 简化代码结构，移除旧组件和无用代码
- 使用 TailwindCSS 进行样式统一管理，提升交互动画体验
- 新增顶部栏包含搜索、消息、语言切换和用户信息
- 调整日期显示和剩余工作日计算逻辑
- 移除多余的类型声明和无用API调用逻辑

.nuxt/content/manifest.ts

@@ -1,33 +0,0 @@
-export const checksums = {
-  "docs": "v3.5.0--jyttfyMCdlkkD2Cy6uAigSOupLz7w9JK12BEQDx-Jb8"
-}
-export const checksumsStructure = {
-  "docs": "quFkNIUZZFAwcn0ok74-KsIERem9u0p5DW-cqEgxrPA"
-}
-
-export const tables = {
-  "docs": "_content_docs",
-  "info": "_content_info"
-}
-
-export default {
-  "docs": {
-    "type": "page",
-    "fields": {
-      "id": "string",
-      "title": "string",
-      "body": "json",
-      "description": "string",
-      "extension": "string",
-      "meta": "json",
-      "navigation": "json",
-      "path": "string",
-      "seo": "json",
-      "stem": "string"
-    }
-  },
-  "info": {
-    "type": "data",
-    "fields": {}
-  }
-}

.nuxt/content/types.d.ts

@@ -1,21 +0,0 @@
-import type { PageCollectionItemBase, DataCollectionItemBase } from '@nuxt/content'
-
-declare module '@nuxt/content' {
-   /* eslint-disable */
-  /**
-   * This file was automatically generated by json-schema-to-typescript.
-   * DO NOT MODIFY IT BY HAND. Instead, modify the source JSONSchema file,
-   * and run json-schema-to-typescript to regenerate this file.
-   */
-  
-  interface DocsCollectionItem extends PageCollectionItemBase {}
-  
-
-  interface PageCollections {
-    docs: DocsCollectionItem
-  }
-
-  interface Collections {
-    docs: DocsCollectionItem
-  }
-}