How does preventing PII leakage from LLM outputs satisfy ABA Model Rules requirements?

Kastra enforces preventing PII leakage from LLM outputs at the moment of execution and writes a signed evidence record for every response. Auditors get a complete, append-only trail of who attempted what, what policy fired, why the decision was made, and what data was touched. This evidence maps directly to ABA Model Rules, attorney-client privilege controls control families.