# F-189 — Documentation

Updated `docs/pos/POS_CHECKOUT.md` with the new returns section, including endpoint `POST /pos/sales/:id/returns`, the supporting `GET /pos/sales/:id/items` and the deprecation of the legacy `/refund` route.

Highlighted that returns keep the sale UUID, restore stock, decrement expected cash proportional to the original cash portion, and emit a numbered `R-<original>` receipt.

Removed F-189 from the future-work list.
