Dragging a node taller only ever widened its stage. The frontend
arranges widgets in one pass:
if (w.computeSize) -> fixed height, kept OUT of the split
else if (w.computeLayoutSize) -> joins distributeSpace(freeSpace, ...)
else -> one standard widget row
It is an else-if, so a widget declaring both is pinned by computeSize
and its computeLayoutSize is never called. Every stage, player and
filmstrip here derived that fixed height from the node's WIDTH, so the
extra height became dead space underneath. Compare was fixed by hand;
the other six had the same defect.
Adds js/shared/panel_layout.mjs with one fillNodeHeight() that deletes
computeSize and declares a floor with no ceiling - distributeSpace reads
a missing maxSize as Infinity, so the panel takes whatever is left.
Applied to Compare, Save Video, Load Video, Frame Chooser, Load Image +
Pad, Image Crop+Rotate+Pad, and the shared transform panel that Video
Crop+Rotate+Pad mounts. Removing computeSize also removed where those
nodes got their opening height, so Save Video, Load Video and Load Image
+ Pad now state a default; a saved size still wins through onConfigure.
Measured in the browser: all seven grow 1:1 with the node and clamp at
their own floor.
The panel audit now enforces it - a DOM panel is either a stage that
calls fillNodeHeight and never assigns computeSize, or is listed as
fixed by design - so a new panel cannot quietly reintroduce this.
ausboss
9262c515e5