Compare agent skills before installing.

Stress-tests an already-written game bug fix with adversarial cases selected from the state, timing, identity, lifecycle, persistence, and input surfaces the patch can actually reach, then returns a PatchEvidence record covering fail-to-pass, relevant pass-to-pass, inverse-case, invariant, and untested-scope evidence. Use when a fix makes the reported symptom go away and it is still unknown whether the fix is the real one or an overfit, coincidental, or plausible-but-wrong one. Not for finding unknown defects in a build (that is runtime smoke testing), checking one mechanic against its written spec, or judging difficulty, fun, or balance.

Implement work from an approved spec or ticket set, run focused and full tests, invoke code review, and commit the result to the current branch.

Review a branch or diff against repository standards and the originating spec in two independent analysis passes.