## Summary
When the platform database is briefly unreachable while a run is
resuming from a wait, the run no longer fails with
`TASK_EXECUTION_ABORTED`. The worker now retries the resume through the
outage instead of aborting on the first blip.
## Root cause
Resuming a run calls the engine's `continue` worker-action endpoint.
That route caught every error and returned a `422`, which the worker's
HTTP client treats as non-retryable. So a transient Prisma
infrastructure error (for example `P1001` "Can't reach database server")
was flattened into a permanent failure: the worker gave up, force-killed
the run process, and completed it with `TASK_EXECUTION_ABORTED`.
## Fix
- The `continue` route now lets infrastructure errors propagate to the
generic 500 handler (message scrubbed, and retryable by the worker's
HTTP client), the same treatment the trigger path already gives them via
`isInfrastructureError`. Genuine validation errors (snapshot mismatch,
invalid state) still return `422`, so a stale retry stays non-retryable.
Resuming is idempotent server-side (guarded by the snapshot id), so
retrying is safe.
- The worker's `continueRunExecution` calls (both the
runner-to-supervisor and supervisor-to-engine hops) retry with a longer,
jittered backoff so they can ride out an outage lasting tens of seconds,
and the jitter keeps a fleet of resuming runs from stampeding the
database the moment it recovers.
Builds on #3960, which scrubbed the leaked message on these routes but
left the status non-retryable.
No changeset: this is a server-side behaviour fix recorded via
`.server-changes`. The `@trigger.dev/core` edits are internal run-engine
worker plumbing, not a public API change.
Matt Aitken
1a033b665b