Improve application stability and performance by optimizing Zustand store usage, implementing memoization patterns, and introducing persistent authentication.
- **State Management**:
- Refactor Zustand selectors to use `useShallow` and `getState()` to prevent unnecessary re-renders and infinite loops in hooks.
- Implement `persist` middleware for `authStore` to maintain user sessions across restarts.
- Introduce `buildStateCached` in `themeStore` to reduce redundant theme object computations.
- **Performance & Rendering**:
- Implement `useMemo` for stable object/array references in `ImageGallery` and list components to prevent expensive re-renders.
- Replace inline arrow functions with `useCallback` in complex screens like `ChatScreen` and `MessageListScreen`.
- Optimize `FlashList` usage by providing stable `key` and `extraData` props.
- **Architecture**:
- Decouple unread count fetching by introducing `useUnreadCountQuery` (React Query) for better caching and synchronization.
- Add `useChannels` hook to centralize channel data fetching.
- Refine `SessionGate` logic to allow immediate rendering of authenticated users while verifying in the background.
Remove custom SubscriptionManager class and adopt Zustand's built-in
selector mechanism for reactive state updates. This simplifies the
architecture by eliminating manual subscription management and relying
on Zustand's automatic dependency tracking for component re-renders.
Key changes:
- Remove SubscriptionManager class from store.ts
- Replace all notifySubscribers calls with direct store updates
- Update hooks to use Zustand selectors with useShallow for complex data
- Remove subscribe/unsubscribe patterns from MessageManager
- Simplify EmbeddedChat to use selector instead of local state
- Rename requestConversationListRefresh to refreshConversations
- Remove MessageStateManager wrapper layer in favor of direct zustand store
- Move service modules to services/ subdirectory (ConversationOperations, MessageDeduplication, MessageSendService, MessageSyncService, ReadReceiptManager, UserCacheService, WSMessageHandler)
- Add new zustand-based store with subscriptionManager for event handling
- Introduce React hooks for message state (useConversations, useMessages, useUnreadCount, etc.)
- Update exports in index.ts to reflect new module structure
- Deprecate messageManager.ts entry point in favor of message/index.ts
- Maintain backward compatibility with existing MessageManager API
