Shared UI Layout

Central and Tenant applications share one shell so both sides of the platform feel identical until business modules diverge.

Guide	Audience
shared-layout-developer.md	Engineers extending the shell, navigation, or page chrome
tenant-application-user.md	Workspace users navigating the Tenant Application
../architecture/shared-ui.md	Architecture — design system and reuse strategy

Principle

Changing a shared layout component should benefit both applications whenever practical. Business dashboards and module pages may diverge later; the shell stays reusable.