Operators need to build kits from library drawings before they can be
released. The Drawing Library dialog gains a Sets tab beside Drawings,
so sets live where their drawings are browsed: list, search, archive,
restore, history, and an editor whose Add Drawings reuses the library in
a multi-select pick mode. The Drawings tab's menu shows which sets use a
drawing and adds it to a chosen or new set.
DrawingSetEditSession keeps a new set's id across a save whose reply was
lost, so a retry adopts the stored set instead of creating it twice, and
guards existing-set saves with the revision they were read at.
Co-Authored-By: Claude Opus 5.5 <noreply@anthropic.com>
ajandClaude Opus 5.5
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