Errors
Error pages explain recovery paths for local CLI, library, and MCP use.
- Parse error – The source could not be parsed. Preserve the source and point to the line/column when available.
- Mutation error – A typed mutation was invalid for the narrowed family or target.
- Render error – Rendering failed after parse. Return the error and source; do not fabricate an artifact.
- Verify failed – The diagram parsed but verification returned blocking structural warnings.