forked from 1b-agent/opencadstudio-upstream
- CreateDimensionLinear(DimensionSpec) op + GetDimensionMeasurement query (append-only). - backend add_dimension_linear (Dimension::Linear via DimensionLinear::new) + dimension_measurement (linear/radius/diameter distance). - Dimension bounds from measured + definition points; Dimension handle + measurement(). - spec Dimension family; api_reference + binding_schema regenerated; mocks + baseline. - Test phase2c_dimension_linear_create_measurement_bounds -> 607 host lib + 8 crate + 3 consistency green. Phase 2 (full 2D + annotations) is now complete.