Adds an opt-in way for operators to route deployed runs' API traffic
through a different origin than the public one, per organization. Set
`INTERNAL_API_ORIGIN` on the webapp and enable the
`internalApiOriginEnabled` feature flag (globally or per org, with the
org override winning in both directions): deployed runs for enabled orgs
then get `TRIGGER_API_URL` set to the internal origin instead of
`API_ORIGIN`. Useful for gradually moving run traffic onto a private
network path.
## Design
The origin is resolved when an attempt starts, so flag changes take
effect on the next attempt and roll back the same way, with no task
redeploys. The org override is read fresh per attempt; the global
default comes from the cached flags registry (a cold read fails safe to
the public origin). When `INTERNAL_API_ORIGIN` is unset the flag is a
no-op and no extra queries run, so existing deployments are unaffected.
Dev runs always use the public origin, and `TRIGGER_STREAM_URL` remains
unchanged.
Saadi Myftija
44eca4d166