---
type: error-book
tldr: Table of known ingest/lint errors, root causes, and the constraints derived from them.
last_updated: 2026-07-13
---

# Error Book

Records systematic compilation errors, their root causes,
and the reusable constraints derived from them.

| Date | Error | Root Cause | Fix / Constraint |
|------|-------|-----------|------------------|

*(Agent maintains this during lint and ingest operations.)*