adds the envelope headers and the client tag to a response the app produced
Optionaloptions: DecorateOptionsbumps the vector after a write; drop also removes artifacts by id
Optionaloptions: { drop?: readonly string[] }The Spool-Partition value for a principal. A login or account-switch handler sets it on its
own response, since the request it answers still carries the old identity: the worker then
swaps its store before any local view can read the old one.
a Response for /.spool/*, undefined for anything else
the /spool-sw.js response
what
createSpoolreturns