- Tab close buttons are now visible and right-aligned with a hover
background (they were nearly invisible, causing accidental panel
closes).
- Tear-off: dragging a tab outside the dock opens the panel in its own
floating window; closing the window re-docks the panel to its last
group (or closes it outright from the Window menu).
- Timeline clip dragging shows a translucent ghost at the target track
and frame, including cross-track moves.
- Project explorer icon view renders real thumbnail images when the
engine provides them, with debug selectors and a structural test.