fix

pkg/inventory/doc.go

@@ -17,9 +17,10 @@
 // listener.go subscribes to the inventory_changed Redis pub/sub channel
 // and mirrors upstream events into the local cache.
 //
-// TODO: types.go mixes storage types (InventoryItem, InventoryReference)
-// with request types (CartReserveRequest, ReserveRequest). Split into
-// `types/storage.go` and `types/cart.go` so callers can depend on only
-// what they need. Start by moving CartReserveRequest + ReserveRequest to
-// `types/cart.go` and adjusting the imports in cmd/*.
+// Request and reservation DTOs (CartReserveRequest, ReserveRequest,
+// CartID, ReservationStatus, ReservationSummary) now live in
+// request_types.go. Storage types (InventoryItem, InventoryReference,
+// InventoryResult) remain in types.go. When adding a new request shape,
+// put it in request_types.go; when adding a new storage shape, put it
+// in types.go.
 package inventory