The region is now us-east

It was us-east-vin, the name of one building; a region is named for its place, so more data centres nearby can join it. Every sandbox, snapshot, volume, image and job moved with it and keeps running. Asking for us-east-vin now answers invalid_region and names us-east, and an identity token's region claim reads us-east, so update a trust policy that names the old one. withruntime 0.8.4 sends us-east as a job's default region; update with npm i withruntime@latest or pip install -U withruntime. A job that names a region Runtime does not have is now refused when you create it, rather than waiting at every run.