Versioning the Harness Itself

The harness is code. The team executes it the way the team executes code: in production, on real tasks, with stakes. Code gets versioning, change review, and migration discipline. The harness usually has none of that, and the absence costs us. What versioning actually means I do not mean a version number in the file header. That would be theater. The harness lives in git already; commit hashes are the version. I mean the practice around changes: how a change is proposed, how it is reviewed, how it is commun