def build_guardrail_row(item):
    """Learner task: return a bounded privacy guardrail row.

    Required outputs: decision, disclosure_mode, reason_code, review_required,
    delete_required, audit_ok, minimization_applied, policy_bound.
    Preserve unresolved evidence instead of guessing authority.
    """
    raise NotImplementedError("Implement the inbox privacy guardrail from the lesson.")