- Remove Crop rebuilds the image's placement from its drawn CTM instead of
pattern-matching cm ops. After an Arrange under a translated CTM it used to
keep the absolute placement and draw the image displaced.
- Arrange refuses a move that would change which clips apply to the image
(moving it past a top-level clip it isn't under, or out from under one
without redrawing it), instead of silently cropping it.
- The exact-clip test now checks the moved copy carries its own clip and
hit-tests both images.
- Cargo.lock: add pdfcraft-edit's pdfcraft-render dev-dependency, which the
previous lockfile commit left out (CI failed --locked).