A drawing every nest needs, such as the operator's test square cut before
the job, had to be saved once per material and thickness or found with Show
all materials. A blank material or grade, or a zero thickness, now means
any: the server's library filter returns such drawings for every value,
and adding one to a nest is not a difference, so it keeps its cut pins and
takes the nest's material for the fields it left blank. Duplicate detection
still compares every key exactly on the client.
Co-Authored-By: Claude Opus 5.5 <noreply@anthropic.com>