A stack (the Default workspace's right column) held one panel per frame. Dropping a panel
onto the middle or the tab strip of a stacked panel inserted a new stacked frame below it,
and dropping on its top or bottom edge split the whole column.
A stacked frame now holds tabs (`StackEntry { panels, active, open, height }`):
- Center / tab strip drops add the panel as a tab of the anchor's frame and show it.
- Top / Bottom drops add a frame of its own above / below the anchor's frame only.
(Left / Right still split the column: a frame can't hold a side-by-side split.)
- Clicking a frame's shown tab (or its header bar) expands / collapses it; another tab
shows that panel. Closing a tab keeps the frame; its last tab removes it.
- Saved workspaces from before (`{"panel": …}` per frame) still load.
Tests: dock unit tests (Center / Top / Bottom on a stack, insert_tab, close, old saved
entries); a kittest dragging Effect Controls onto Properties makes a two-tab frame whose
tabs switch the shown panel.
Co-Authored-By: Claude Opus 5.5 <noreply@anthropic.com>
Claude-Session: https://claude.ai/code/session_01QiAJeFttZp83Fh7YuzAR5f
effect.apply / effect.applyLast run through the menu dispatcher (Effect
menu, Last Effect, an effect dropped on a Timeline layer or on Effect
Controls) now bring up Effect Controls, opened if closed and brought to
the front without taking the focus, on the layer the effect went to
(selecting it if it was dropped on an unselected layer, keeping the new
effect selected). Double-clicking an effect's name in the Timeline opens
it in Effect Controls (layer.select, prop.select, window.panel) instead
of twirling it, as in After Effects.
Co-Authored-By: Claude Opus 5.5 <noreply@anthropic.com>
(cherry picked from commit 04bd305b9dccbb34d8c70fe870513208cdae0b7b)
Opening a comp (Project double-click, Open Composition, a Timeline tab)
now reopens the Composition panel if it was closed and brings it (and
the Timeline) to the front, as in After Effects. A closed Composition
panel also reopens in the centre (with the Layer panel or other viewers,
else above the Timeline) instead of beside Effects & Presets, which also
fixes Window > Composition.
App::raise_panel opens/fronts a panel without moving the focus;
show_panel builds on it.
Co-Authored-By: Claude Opus 5.5 <noreply@anthropic.com>
(cherry picked from commit adf2c6dac78ce426ea0bf6b4199b7238d8ad99dd)
Claude