# ACE Lessons & Guardrails

Use this file as an append-only guardrail ledger.

## Template

- **Date:** YYYY-MM-DD
- **Context:** <where the failure happened>
- **Failure Pattern:** <what went wrong>
- **Guardrail:** Never <bad pattern>; always <safe pattern>.
- **Verification Check:** <objective way to enforce the guardrail>

## Seed Guardrails

- Never close implementation work without objective verification output.
- Never route cross-role work without a structured handoff payload.
- Never mark a task done when artifact updates are missing.