Note

Allow deleting non-empty projects via a warning toast with inline 'Delete anyway' action

• When a user removes a project that contains threads, a warning toast now appears with a 'Delete anyway' button instead of blocking the action. Clicking it confirms, deletes all threads in the project, then removes the project.
• Introduces a removeProject callback in Sidebar.tsx that consolidates project deletion logic (clearing drafts, dispatching the delete command) used by both empty and non-empty project flows.
• Extends the toast data shape in toast.tsx with actionLayout and actionVariant to support inline destructive action buttons and stacked layouts in both Toasts and AnchoredToasts.

^{Macroscope summarized f74b447.}