Drawing cut pins and the per-placement pins-off flag now survive
save/reload and travel in drawing packages.
- `DrawingDto.cutPins` reuses the plate cutting-parameter lead and tab
DTOs. Pins are read strictly per entry: an unknown lead or tab type is
never replaced by a default, because a pin that cut differently from
what was saved is worse than no pin. A bad entry is skipped with a
reader warning naming the drawing and pin, and the rest load; a value
that is not a list loads no pins, with a warning. A nest never fails to
open over pins.
- `PartDto.drawingPinsOff` is written only when true. Anything other than
a boolean loads as pins on (the drawing wins, D1) with a warning naming
the plate and part, so an operator's override is never lost silently.
- Packages carry pins as drawing content, so pinning a drawing changes
its package hash and the newer-revision notice can tell geometry/pins
changes from detail-only ones.
- `Part.DrawingPinsOff` holds the flag; nothing plans with it yet.
Co-Authored-By: Claude Opus 5.5 <noreply@anthropic.com>
