* Implement flat mode to transform flat data with parentId to nested structure.
* Introduce lazy mode for on-demand loading of children.
* Update tree rendering logic to accommodate new modes.
* Enhance tree cell expansion logic to support lazy loading.
* Add dark mode styles for improved UI experience.
* Create comprehensive end-to-end tests for tree functionality.
- refactor state structure to include app, layout, navigation, owner, program, session, and user
- add slices for managing program, session, owner, user, layout, navigation, and app states
- create context provider for global state with automatic fetching and throttling
- implement persistence using IndexedDB with localStorage fallback
- add comprehensive README documentation for usage and API
* Remove unused FormLayout and SuperForm stores.
* Consolidate form logic into Former component.
* Implement new Former layout and types.
* Update stories for new Former component.
* Clean up unused styles and types across the project.
