osmWorkflow/.trellis/tasks/08-26-rc-p5-artifact-consumption/implement.md

P5 Integration Plan

1. Complete P5A in road-compiler: deterministic Web/CLI ZIP export plus supported-area fixtures and a tagged compiler release.
2. Complete P5B in osmWorkflow: safe importer, config migration, CLI/dependency removal and downstream descriptor migration.
3. Run the shared end-to-end gate on fengshu-er-road and nantaizi-lake-innovation-valley: import ZIP -> Blender -> Cesium -> package -> preview -> area checks.
4. Compare Blender scene digests to P3 control; run negative ZIP tests and legacy provider tests.
5. Record contract docs in both repositories, commit each repository independently, then archive both children and this integration parent.

Integration rollback: restore the host's previous tagged compiler dependency and compile adapter. ZIP export is additive and its generated files remain valid standalone artifacts.