- 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
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