docs: 更新 CLAUDE.md 项目文档

- 新增7个页面的文档说明
  - product-detail: 产品详情页，支持接收ID参数
  - material-list: 资料/文档列表页
  - help-center: 帮助中心和FAQ页
  - search: 搜索页面
  - webview: WebView外部链接包装页
  - document-demo: 文档预览演示页
  - document-preview: 文档预览页

- 更新业务模块描述
  - 细化产品展示模块说明
  - 新增资料库模块说明

- 完善导航使用说明
  - 添加参数传递示例
  - 添加 useLoad 接收参数的示例
  - 说明产品详情页的导航流程

Co-Authored-By: Claude Sonnet 4.5 <noreply@anthropic.com>

@@ -21,11 +21,15 @@ This file provides guidance to Claude Code (claude.ai/code) when working with co
 
 ### Business Modules
 The app currently includes the following main features:
-- **Product Showcase** - Hot products display and search
+- **Product Showcase** - Hot products display with detail pages
+  - Home page shows hot products with "产品资料" (Product Materials) buttons
+  - Product detail page displays comprehensive product information
+- **Material Library** - Training materials and document management
+  - Knowledge base for training materials and case studies
+  - Material list page with document preview capabilities
 - **Family Office** (家办) - Family office services
-- **Knowledge Base** (资料知识库) - Training materials and case studies
 - **Contract Signing** (签单) - Contract signing workflow
-- **User Center** - Personal profile, favorites, feedback
+- **User Center** - Personal profile, favorites, feedback, help center
 
 ## Project Architecture
 
@@ -143,6 +147,9 @@ src/pages/your-page/
 
 **Core Pages**:
 1. `pages/index/index` - Home page (product showcase, search, grid navigation)
+   - Hot products "产品资料" buttons navigate to `product-detail` page with product ID
+   - Hot materials "查看更多" navigates to `material-list` page
+   - Grid navigation icons navigate to various business pages
 2. `pages/auth/index` - Authentication page
 3. `pages/login/index` - Login page
 
@@ -156,8 +163,20 @@ src/pages/your-page/
 10. `pages/avatar/index` - Avatar settings
 11. `pages/mine/index` - User profile
 
-**Auxiliary Pages**:
-12. `pages/onboarding/index` - New user onboarding
+**Product & Content Pages**:
+12. `pages/product-detail/index` - Product detail page
+   - Receives `id` parameter via Taro's `useLoad` hook
+   - Example navigation: `go('/pages/product-detail/index', { id: 1 })`
+   - Parameters can be used to fetch product details from API
+13. `pages/material-list/index` - Material/Document list page
+14. `pages/help-center/index` - Help center and FAQ page
+15. `pages/search/index` - Search page for products and materials
+
+**Utility Pages**:
+16. `pages/onboarding/index` - New user onboarding
+17. `pages/webview/index` - WebView wrapper for external URLs
+18. `pages/document-demo/index` - Document preview demo page
+19. `pages/document-preview/index` - Document preview page
 
 ### Component Library
 
@@ -303,17 +322,38 @@ These features can be removed if not needed:
 4. **Use composition API** in `index.vue`:
    ```vue
    <script setup>
-   import { ref, onMounted } from 'vue'
+   import { ref } from 'vue'
    import { useLoad, useShow } from '@tarojs/taro'
 
+   const pageId = ref(null)
+
    useLoad((options) => {
      console.log('Page loaded with options:', options)
+     // Receive navigation parameters
+     if (options.id) {
+       pageId.value = options.id
+       // Fetch data based on ID
+     }
+   })
+
+   useShow(() => {
+     console.log('Page shown')
    })
 
    // Your component logic
    </script>
    ```
 
+   **Navigation with Parameters**:
+   ```javascript
+   // From another page
+   import { useGo } from '@/hooks/useGo'
+   const go = useGo()
+
+   // Navigate with query params
+   go('/pages/product-detail/index', { id: 123, type: 'insurance' })
+   ```
+
 5. **Add navigation** (optional TabBar integration):
    - Import and use `TabBar` component
    - Configure active state based on route
@@ -355,13 +395,33 @@ const go = useGo()
 // Navigate to page
 go('/pages/detail/index')
 
-// Navigate with params
-go('/pages/detail/index', { id: 123 })
+// Navigate with params (e.g., product ID)
+go('/pages/product-detail/index', { id: 123 })
+
+// Navigate with multiple params
+go('/pages/material-list/index', { category: 'insurance', page: 1 })
 
 // Go back
 go.back()
 ```
 
+**Receiving Parameters in Target Page**:
+```javascript
+import { useLoad } from '@tarojs/taro'
+import { ref } from 'vue'
+
+const productId = ref(null)
+
+useLoad((options) => {
+  // Access navigation parameters
+  console.log('Received params:', options)
+  productId.value = options.id
+
+  // Fetch data based on parameters
+  fetchProductDetail(options.id)
+})
+```
+
 **Alternative**: Use Taro's built-in navigation:
 ```javascript
 import Taro from '@tarojs/taro'