Function
The content key
The parsed location manifest
Store that answers for a key matching no override and no route.
Exact key → store name, for single assets that escape their prefix.
Exact key → declared placement. Outranks every other layer.
The object path within whichever store owns the key
Prefer this over objectPathFor wherever the manifest is in hand: a
declared objectPath replaces BOTH the key and the store's pathPrefix, and
only this function knows that.
Where a key's bytes sit, honouring a declared placement.