operator family

Mutation pressure needs a stable vocabulary for the generic kinds of damage it can attribute without inventing subject meaning.

This home owns that vocabulary. Each authored family carries a stable slug and a concise account of what the damage attacks, while the complete bank is the authority against which mutation targets and rewrite plans resolve family membership.

The slug crosses identity-bearing mutation surfaces, so changing it is an identity decision rather than a documentation edit. The account of what a family attacks is caller-facing meaning, but it does not enter those preimages.

Evidence ceiling

Membership says that the harness can name a kind of damage. It does not select a mutation point, apply a rewrite, establish activation, or decide what a surviving mutant means for a product. Those operations remain with mutation pressure and the subject owner.