refactor(home): redesign home screen with sort bar and add recommendation feed

- Replace PagerView-based tabs with modern sort bar navigation
- Add "推荐" (recommended) feed option with "hot" sort type
- Update tab icons and labels to match new sort paradigm
- Optimize PostCard, MessageBubble conditional styles

perf(chat): migrate FlatList to FlashList for emoji/sticker panels

- Improve virtualized rendering performance for emoji and sticker grids
- Fix jump-to-latest scroll behavior for inverted FlashList

perf(profile): extract user header and tab bar into separate memoized renders

- Prevent unnecessary re-renders when switching tabs

feat(api): add channel_id filter support for post queries

- Include channel_id in cursor pagination requests
- Update CursorPaginationRequest type definition

style(chat-info): redesign group and private chat info screens with flat layout

- Remove card borders and shadows for cleaner appearance
- Adjust avatar sizes and spacing for consistency

src/services/post/postService.ts

@@ -251,12 +251,15 @@ class PostService {
          page_size: params.page_size,
        };
        
-       // 将 post_type 映射为后端的 tab 参数
-       if (params.post_type) {
-         requestParams.tab = params.post_type;
-       }
-       
-       const response = await api.get<any>('/posts', requestParams);
+        if (params.post_type) {
+          requestParams.tab = params.post_type;
+        }
+
+        if (params.channel_id) {
+          requestParams.channel_id = params.channel_id;
+        }
+
+        const response = await api.get<any>('/posts', requestParams);
       
        const data = response.data;