zustand

LobeHub Zustand store conventions: public/internal/dispatch action layers, optimistic update pattern, slice composition via `flattenActions`, and class-based action migration. Use whenever working under `src/store/**`, adding a `createXxxSlice`, writing `internal_*` or `internal_dispatch*` actions, designing `messagesMap`/`topicsMap` reducers, refactoring a `StateCreator` object slice into a `XxxActionImpl` class, or debugging stale store reads. Triggers on `useChatStore`/`useUserStore`/`useGlobalStore`, `createStore`, `flattenActions`, `StoreSetter`, `internal_dispatch`, 'add an action', 'zustand selector', 'store slice', 'class action', 'optimistic update'.