Odoo debugging

Most Odoo errors are about the composed runtime, not a typo: a field/method/view that exists only after the addon graph loads, an override that ran (or didn't) at the wrong MRO layer, a record rule, or a stale cache. The top traceback frame is often not the cause. Decode the error class first, then read ground truth before editing — delegate discovery to the odoo-introspect skill (odoo-ai all <model>).

Version floor: Odoo 17/18, through Odoo 19 (current LTS). --dev sub-flags and --log-handler names target 17/18+; breakpoint() needs Python 3.7+. Older → skills/odoo-introspect/references/version-matrix.md.

Symptom → first tool