Replace the synthetic disclosure interpolation test with a real Chrome headless run against the existing visual harness, sampling rendered height, transform, opacity, and adjacent row geometry during collapse and expansion.
Group the global downloads disclosure action in a responsive toolbar tail, remove the horizontal toolbar scroll path, and keep the action pinned within the supported 1120 pixel layout while the schedule is open.
Disable the global disclosure action for a truly empty queue and cover the empty model plus responsive DOM boundaries.
Fade the shared virtual item group from transparent to opaque while expanding and reverse the opacity while collapsing, preserving the clipping row as the geometry owner.
Move the downloads package toggle to the far toolbar edge and add a collector toolbar toggle backed by raw unfiltered package IDs.
Cover opacity endpoints, intermediate frame geometry, toolbar ordering, and filter-independent collector toggle semantics.
Sucukdeluxe