forked from 1b-agent/opencadstudio-upstream
Enable the existing palette rows and BPARAMETER choices. Rotation accepts a center, picked or numeric radius, and picked or numeric default angle. Alignment places a tangent direction from its base point. Flip places a reflection line and state label, with native grip and state expressions. Extend shared graph append/capacity checks for Flip's additional state node while preserving existing subgraphs. Keep Polar/Rotation angle labels unique in either placement order. Add editor graphics, extents and definition reframing through the existing overlay/history/save paths. This milestone implements native parameter placement and persistence. Rotate/Flip action association, reference alignment/grip editing, parameter property editing and parameter sets remain separate work. Validation covers command and palette placement, cancellation, local/parent undo, save/discard, native DWG/DXF objects, existing graph preservation and the 17 research fixtures. Broader block/dock regressions and editor renders are also checked.