Custody No Longer Hides a Checkout

Custody and bookings are two independent ways an asset can be spoken for, but an asset carries a single status. Until now, whichever action happened last won, and both directions were wrong.

Assigning custody to an asset that already had units out on an ongoing booking overwrote Checked out. Every part of Shelf that answers "is this off the shelf" reads that status, so those checked-out units stopped being counted and the Available figure overstated free stock by exactly the booked quantity. Releasing custody was worse: it put a physically absent asset back onto every picker, list and availability sum as Available.

One rule now, everywhere

Checked out outranks in custody, which outranks available. Only the booking flow can take an asset out of Checked out, and no custody action can talk over it.

• Giving custody of an asset that is checked out is refused, with a message naming the asset and telling you to check the booking in first. An individually tracked asset is one physical item, so this is a real conflict worth seeing rather than something to allow quietly.
• Releasing custody leaves a checked-out asset checked out. It rejoins the available pool when the booking is checked in, not before.
• A kit takes custody of what it can. Members that are out on a booking keep their Checked out status and the kit's custody applies to the rest.

The rule now holds on every route: the asset page, kit custody, adding an asset to a kit that is already in custody, kit deletion, the bulk custody actions, and the mobile release endpoint.

Pools are counted, not flagged

A quantity-tracked asset is a pool, so 20 units with a custodian and 5 out on a booking can both be true of the same asset. Those are separate rows on the Quantity Overview card and Available is what is left after both.

For the same reason, the bookings list no longer marks a booking as containing unavailable assets just because some other units of a pooled asset are in someone's custody. Handing out 20 of 29 units still leaves 9 bookable, and a booking drawing on those free units is valid. A booking that genuinely asks for more than is available still gets its own stock warning on the item's row.