Redacted excerpt; full evidence withheld.

$ pwd; ls -la; sed -n '1,240p' README.md; python3 --version; id -u
exit: 0
ctured-output columns; allowed only under regular Tool Use with `strict_tools=False`). Supported and **not** flagged: `anyOf`, `$ref`/`$def`, `enum`, `const`, `pattern`. Structural (v0.4): top-level schema must be `type: object`; every object (incl. nested) must specify ≥1 `required` field. Caveat (still not a rule): regex anchors (`^`, `$`, `?=`, `?!`) *inside* a `pattern` are unsupported; anchor detection needs value-inspection and remains deferred. Primary-sourced to [docs.cohere.com/docs/structured-outputs](https://docs.cohere.com/docs/structured-outputs). |

## Exit codes

| code | meaning |
|---|---|
| `0` | no errors (warnings allowed unless `--strict`) |
| `1` | at least one error (CI fail) |
| `2` | bad input (unreadable / invalid JSON) |

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