## Summary
When replaying runs in bulk from a deployed environment, you can now
choose which region the replayed runs run in. The bulk action inspector
shows an "Override region" dropdown that defaults to "Don't override",
which keeps each run in its original region, so replaying a selection
that spans multiple regions doesn't silently re-route anything. Pick a
region and every matched run is replayed there instead.
The dropdown only appears for the replay action in a deployed
environment with more than one region available; cancel actions and
development environments don't show it.
## Design
The selected region is carried through the bulk action as a dedicated
`replayRegion` param, kept separate from the run-list selection filters
so it can't be confused with a region selection filter. When the action
runs, each replay passes it through to the existing region override on
the replay service, which already falls back to each run's original
region when no override is set. "Don't override" is a sentinel value
that the action normalizes away so the service only ever sees a real
region or nothing.
---------
Co-authored-by: Eric Allam <eric@trigger.dev>
Matt Aitken
d720690073