PR previews don't read the hub — they share one :staging tag, so they would show main's prompt instead of the branch's. dev-v2 is preview-TYPE too, so VERCEL_TARGET_ENV rather than VERCEL_ENV is what tells them apart.
:staging
VERCEL_TARGET_ENV
VERCEL_ENV
PR previews don't read the hub — they share one
:stagingtag, so they would show main's prompt instead of the branch's. dev-v2 is preview-TYPE too, soVERCEL_TARGET_ENVrather thanVERCEL_ENVis what tells them apart.