If you kill the matcher worker, the job remains incomplete in the timeline

To be honest, the best solution is probably to have a different way of stopping the job.

Start by reproducing the failure described in the issue: kill the matcher worker and inspect the job's timeline state. Trace how worker termination is handled and how incomplete jobs are recorded. Done means stopping the worker leaves the job in a defined, accurately represented state, with coverage for the termination path.

Written by the indexing model from the issue text.