osmWorkflow/.trellis/tasks/08-17-native-lane-separator-styles/implement.md

Implementation Plan

1. Validate and resolve per-lane-pair style overrides.
2. Generate default/dashed/solid style geometry and effective properties.
3. Add the native Blender yellow lane-separator material route.
4. Add Workbench selection, Chinese editor and automatic staging.
5. Test compiler, Workbench, Blender catalog and Nantaizi native build.