Sparc Refine

This handles phases 4 and 5 of the SPARC methodology: refinement through code review and testing, then completion with validation and deployment prep. It systematically checks your implementation against the spec, architecture, and pseudocode, measures test coverage (targeting 80%+), profiles performance constraints, then builds a traceability matrix linking every acceptance criterion to its tests and code. The deployment checklist covers migrations, config changes, rollback plans, and security review. If you're running SPARC, you'd use this after architecture is done to go from implemented to production ready. The structured approach is thorough but adds process weight, so it makes most sense for features where correctness and auditability matter more than shipping fast.