Typing customer, material, grade and thickness by hand let near-duplicate
spellings into the library, which then split drawings that should match.
The fields are now drop-downs of the values the library and the machine
material catalog already use, while still accepting new values; thicknesses
already used for the material are listed ahead of the standard gauges.
A library color could be set but never cleared back to the color scheme's,
so Automatic and Reset are added. The rotation start/end/step boxes gave no
sense of the range, so a dial shades it, ticks the angles the engines try
(via RotationPolicy) and lets either end be dragged.
Co-Authored-By: Claude Opus 5.5 <noreply@anthropic.com>