forked from 1b-agent/opencadstudio-upstream
The bundled DRAINAGE / DRAINAGE2 definitions use the RIGHT_ARROW shape from qcadshp.shx, which had no substitute, so they drew as continuous lines. Add it to the bundled shape set alongside BAT, ZIG and the rest. Fixes #665 Co-Authored-By: Claude Opus 5.5 <[email protected]>