DataGrid Adapter
opt-shell - Adapter
ShellProviderListWorkspace+1
EditorWorkspace와 ShellEditorAdapter 조합으로 authoring chrome과 editor engine의 소유 경계를 분리합니다.
A focused authoring workspace with toolbar, status, inspector, and review handoff kept in one route.
The editor is fixture-backed so the page stays deterministic, but it still behaves like a real authoring surface.