The workflow tool gains run_in_background (enableRunInBackground config,
default on): the run registers on ctx.jobs as an owned 'workflow' record
job and the call returns { kind: 'background', jobId, runId } immediately.
The run belongs to the job — job_kill, the list's stop control, and owner
teardown cancel it; no tool-step signal is bridged. Settlement maps the
stop reason onto the job outcome, with a completed run's rendered return
value riding output to the completion notice and job_output. A record
mirror streams workflow/phase, workflow/log, and member lifecycle lines
into the job record, replacing the removed activity mirror; the output
schema becomes a kind-discriminated union and 'workflow' joins JobKindMap.
Snapshot expected outputs are refreshed for the schema, prompt, and PTC
stub changes (the keyless refresh also migrates fixtures to the current
session write format: range sourceEventSeqs and reasoning-delta chunks).
Yichen Jiang
12957a106e