ctx.sidebarRight acted on a binding the right Sidebar seat published from
passive effects. React runs a commit's passive effects in tree order and
the frame renders the Conversation column before the right column, so an
opener mounting in the commit that switched Sessions or returned from a
global panel ran while no seat was bound, and its open threw.
The plugin now names the on-screen Session itself: the selected Session
while the Conversation fills the main column, derived from the Sidebar's
Session views and ctx.layout.panelInfo. Both notify before React renders,
so `mounted` already names the arriving Session during that commit, and
its seat mints the Session's store in the same render. Public commands act
through the Session's adopted store; the seat reports only the room its
docking kit measured, and focus continuity and the auto-fullscreen rule
come from a host the plugin supplies.
- ctx.layout gains viewportWidth from the root layout store.
- SidebarRightBinding, controller.bind(), and the seat's bindService are
removed; the seat's inject face gains measureRoom.
- ui-plan's review opener returns to a plain open gated on `mounted`.
- The plan-review e2e expands the Workspace group by its aria state.
Yichen Jiang
ebb6b03378