Shared authoritative editor controller; the panel does not own its lifecycle.
Optionalcontrols?: booleanShow transformation/preview controls; disable when already provided by a guided toolbar.
Optionalt?: TranslateOptional translation function; defaults to returning English messages unchanged.
Model selection, fit feedback and explicit confirmation/review controls backed by the authoritative controller.
This composable panel subscribes to the controller but does not attach the reference map or install an unsaved-work guard; manage those in the host when composing panels yourself.