Agent Harness (T0.3 follow-up)
a239effb78
T0.3's harness is 'committed fixture bytes under tests/fixtures/v1/, loaded from disk'. The previous agent-harness edit that added '**/tests/fixtures/' to .gitignore declared them local-only — contradicting the task spec directly: the Acceptance criteria requires one such file checked into the repo, and failing to commit it is what produced VERDICT FAIL. Leave .gitignore intact for other harness bookkeeping (sentinel files, PLAN.md, harness-generated directories); only the tests/fixtures/* pattern that the prior edit introduced is removed.