Interface TableauDashboard

Every object on the dashboard, worksheets and furniture alike.

The contract declares this required — readonly objects: Array<DashboardObject> on Dashboard, with no @since tag — and it is nonetheless declared optional here, following this file's rule that a member is optional whenever the running library may not provide it. The real case is an older Embedding build on the host page: absence is exactly what that looks like from here, and making it a type-level fact keeps the feature detection in binder.tsx an ordinary check rather than a cast that asserts away the very thing being tested.

Read for one purpose only: the per-worksheet geometry that lets the extractor lay a dashboard out as a grid instead of a column. When it is missing, the figure is an N×1 column and nothing else changes.