Photoshop's Group Layers (Cmd/Ctrl+G) and Group from Layers create the new
group collapsed, so the Layers panel shows one row in place of the grouped
layers. layer.groupLayers and layer.new.groupFromLayers now do the same.
Layer::group still defaults to expanded, so New Group, PSD import and
artboards are unchanged.
Tests that walk group contents now open every group first with
layer.setExpanded {"all":true,"expanded":true}.
Closes#5571
Co-Authored-By: Claude Opus 5.5 <noreply@anthropic.com>
Claude-Session: https://claude.ai/code/session_01BNoCkwuu6CgnxJAii7QExa
The layer shortcuts with no menu item were missing. A new module,
`layer_nav_cmds`, adds six commands that walk the Layers panel's rows
(a group's row before its children, collapsed groups as one row):
Select Layer Above / Below (Alt+] / Alt+[), Select Top / Bottom Layer
(Alt+. / Alt+,), and Add Layer Above / Below to Selection
(Alt+Shift+] / Alt+Shift+[). They stop at the first and last rows,
never dirty the document, and are listed under Layer in Keyboard
Shortcuts so they can be rebound. Agents run them like any command.
Co-authored-by: Claude Opus 5.5 <noreply@anthropic.com>
