- Guides on a hidden or locked layer leave the selection (Selection::prune,
run after every edit and selection change), their Layers rows neither
select nor drag them, and guide.move / guide.remove / guide.setLayer
refuse them; guide.setLayer refuses a locked target layer, as dragged
rows are refused there.
- A new guide goes where new art goes (the current layer, else the top
shown and unlocked one; refused when there is none), so it never lands
on a hidden layer and vanishes.
- Layer commands keep guides with their layers: Duplicate (and Alt-drag
copies of rows) copy a layer's guides onto the copy, Merge Selected and
Flatten Artwork put the merged layers' guides on the merged layer and
Flatten discards a hidden layer's. One shared doc predicate for "the
layer a guide is on"; the deleted-layer cleanup moves into the doc.
- Tests: engine tests for the above and their undo, a doc check that an
old guide reads with no layer and none is written, and a headless
Layers panel test of guide rows (select, drag to another layer, locked).
- Translations for the new message; docs and a ROADMAP progress line.
Co-Authored-By: Claude Opus 5.5 <noreply@anthropic.com>
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