feat(official): 实现企业官网分包及内容展示

- 新增官方分包目录及页面（首页、资讯列表、详情、关于我们、留言、我的）
- 自定义实现底部导航组件 OfficialTabBar，解决微信 tabBar 不支持分包问题
- 统一接口调用走 shop-api 代理，无新增 CMS 域名，减少合法域名负担
- 新增 CMS 站点信息获取接口及留言咨询提交与查询接口
- 设计并完善官网富文本样式，品牌色统一为 #185FA5，并更新 tailwind 配置
- 首页新增企业官网入口卡片，方便用户访问官网内容
- 完成官网分包构建验证，解决 Taro 构建批量删除保护问题
- 规范 CMS 字段使用，适配字段名称及状态含义
- 后续计划对历史页面 NutUI 组件进行空壳化整改，及更新 UI 设计文档

src/official/about/index.tsx

@@ -0,0 +1,66 @@
+import React, { useState, useEffect } from 'react'
+import { View, Text, ScrollView, RichText, Image } from '@tarojs/components'
+import Taro from '@tarojs/taro'
+import { getCmsWebsiteSiteInfo } from '@/api/official'
+import type { CmsWebsite } from '@/api/official'
+import { getCompressedImageUrl } from '@/utils/image'
+import OfficialTabBar from '../components/OfficialTabBar'
+import NavBar from '@/components/NavBar'
+
+definePageConfig({
+  navigationBarTitleText: '关于我们',
+})
+
+const About: React.FC = () => {
+  const [site, setSite] = useState<CmsWebsite>()
+  const [loading, setLoading] = useState(true)
+
+  useEffect(() => {
+    getCmsWebsiteSiteInfo()
+      .then((s) => setSite(s))
+      .catch(() => {})
+      .finally(() => setLoading(false))
+  }, [])
+
+  const aboutHtml =
+    (site as any)?.config?.about || (site as any)?.description || ''
+
+  return (
+    <View className='flex flex-col h-screen bg-gray-50'>
+      <NavBar title='关于我们' />
+      <ScrollView scrollY className='flex-1'>
+        <View className='p-4'>
+          <View className='flex items-center mb-4'>
+            {site?.websiteLogo && (
+              <Image
+                src={getCompressedImageUrl(site.websiteLogo, { width: 120 })}
+                className='w-16 h-16 rounded mr-3'
+                mode='aspectFill'
+              />
+            )}
+            <Text className='text-lg font-semibold text-gray-800'>
+              {site?.websiteName || '企业官网'}
+            </Text>
+          </View>
+
+          {aboutHtml ? (
+            <RichText nodes={aboutHtml} className='official-rich' />
+          ) : (
+            <Text className='text-sm text-gray-400'>
+              {loading ? '加载中...' : '暂无介绍'}
+            </Text>
+          )}
+
+          <View className='mt-4 bg-white rounded-lg p-4'>
+            <Text className='text-sm text-gray-500 block'>联系电话：{site?.phone || '—'}</Text>
+            <Text className='text-sm text-gray-500 block mt-2'>邮箱：{site?.email || '—'}</Text>
+            <Text className='text-sm text-gray-500 block mt-2'>地址：{site?.address || '—'}</Text>
+          </View>
+        </View>
+      </ScrollView>
+      <OfficialTabBar active='about' />
+    </View>
+  )
+}
+
+export default About