wxs-qc

Implement an approved scoped change in WxS-QC, preserving Python/Hail pipeline contracts, numbered stage behavior, config compatibility, and strict scope discipline.

Validate WxS-QC changes by running integration smoke tests, reviewing pipeline contracts, checking scope discipline, and documenting blocked integration/Hail/Spark validation.

Create a small, reviewable implementation plan for WxS-QC, an old Python/Hail QC pipeline with limited tests, using references/plan-template.md, scoped files, acceptance criteria, and validation steps. Ends by requesting human approval before implementation.