Production-ready AI work, shown step by step.

for attempt in 1..3:
    artifacts = collect_emitted_artifacts()
    missing = []
    malformed = []
    for required in contract:
        if not artifacts.has(required.path):
            missing.append(required)
        elif not required.validate(artifacts[required.path]):
            malformed.append(required)
    if missing == [] and malformed == []:
        return PhaseResult(status=OK, attempt=attempt)
    if attempt < 3:
        for src in this_phase.data_sources:
            src.refresh(no_cache=True)  # bypass any cache
        continue
return PhaseResult(status=DEGRADED, missing=missing, malformed=malformed, attempts=3)