- PierInput.bearingLayout: 분리 (default) or 일체, tracked for changes.
- 일체 is selectable only when there is at least one pair and every pair is
within 100 mm; otherwise the chip is disabled with the reason.
- Validation: B01 (info) when 일체 is chosen and allowed, the block shape is
still the 분리 shape; B02 (warning) when it is not allowed and the model
falls back to 분리.
- The 일체 block shape (2500 × 1200) is not modelled yet.
Co-Authored-By: Claude Haiku 5.5 <noreply@anthropic.com>