forked from 1b-agent/opencadstudio-upstream
Documents six cadcodec reader/writer gaps with source references, canary tests and suggested fixes (nothing filed). Verifying them showed the Spline DXF weight loss was an OCS bug: the writer emits weights only for a rational spline, so the host now sets flags.rational from the weights. Spline passes every gate. Co-Authored-By: Claude Sonnet 5 <noreply@anthropic.com>