LobeHub Zustand State Management

State Shapes and Types

Import shared store types from @lobechat/types, not @lobechat/database.
Keep lightweight list-item types separate from full detail types; list types must not extend heavy detail types.
Key cached details by id (xxxDetailMap: Record<string, Detail>); never hold a single currentDetail object.
Read through xxxSelectors aggregates (selectors.ts), not ad-hoc lambdas repeated across components.
Before choosing list/detail shapes or type sources, read Data structures.

Actions stay out of the Zustand state. Reference: src/store/page.

File	Owns
`store.ts`	`useXStore = createWithEqualityFn<XState>()(devtools(() => initialState), shallow)`: state only, no methods
`privateAction.ts`	`XPrivateAction`: replica slices, entity links, and write helpers shared by public actions. Not exported from `index.ts`
`action.ts`	`XActionImpl` (the public API) and the singleton `xActions = new XActionImpl(setState, getState, new XPrivateAction(…))`