Three documents behind the two features on this branch:
- specs/2026-08-30-non-invoiceable-order-extras-design.md — the design
the implementation followed, including why the flag must be named for
the exception (a positively-named field defaults to false and would
mark every existing row non-billable the moment it is created).
- plans/2026-08-30-non-invoiceable-order-extras.md — the task-by-task
plan, now fully implemented.
- specs/2026-08-30-quantity-handling-audit.md — the order_qty /
quantity audit that produced the preceding fix, plus the partial
collection findings that are still open.
Co-Authored-By: Claude Opus 5 <noreply@anthropic.com>
