forked from 1b-agent/opencadstudio-upstream
- CreateDimensionAngular2Ln(DimensionAngularSpec) op (append-only). - backend add_dimension_angular2ln (DimensionAngular2Ln::new computes angle). - facade create_dimension_angular2ln; spec constructor; api_reference + binding_schema regenerated; mocks + baseline. - IMPLEMENTATION.md: fix stale Status line (all 5 phases complete, current test counts); mark all dimension sub-types done. - Test phase2ciii_dimension_angular2ln (90-degree 2-line angle) -> 616 host lib + 3 consistency green.