Three follow-ups to the hierarchy groups. Dragging a row that belonged to a multi-selection moved only that one row. The group dialog could only create a new group. The group row drew its folder in front of the label, unlike every other row in the hierarchy. - Dragging a selected row moves every selected object. This holds for reordering, dropping into a group or between its members, dragging out of a group and dropping onto an object as new parent. - The moved objects land side by side in hierarchy order, whichever row was grabbed. The whole move is one undo step. - A selected child of a selected object travels with its parent, not on its own. Dropping the selection onto its own rows does nothing. - Dragging a row that is not selected still moves only that row. - hierarchyDrop.moveObjects replaces the single-object rule. One object is the case with one element, so the old drop tests hold unchanged. - The group dialog has a "Group" dropdown: New group or an existing group. Picking a group greys out the name and turns the button into "Add". A group that holds all chosen objects already is not offered. - Rename keeps using the dialog without the dropdown. - ListRow draws an end icon at the very right and the hint left of it. Only the hierarchy uses iconAtEnd, so other lists do not change. - New test hook __gm.hierarchyHint() gives the centre of a row's hint. Not clicked in the browser: dragging a selection in the container tab and onto an object as parent. Only the unit tests cover these. Tests: - ./check.sh: 178 files, 2564 tests, CHECK EXIT 0 - e2e 1 + 52: ALL PASSED, 27 checks - 7 new unit tests in hierarchy-drop.test.ts, 4 new e2e checks in 52i and 52j with real clicks and a real drag - 4 counter-probes bite: drop rule ignores the selection (5 unit tests fail), icon column not kept free, dialog ignores the picked group, panel ignores the selection (only o2 lands in the group) Co-Authored-By: Claude Opus 5.5 <noreply@anthropic.com>