The previous commit stopped a re-run from the unreachable-model ladder from
counting toward repeat, but only on the normal _finish_completed_run path.
The other places that record a failed fire on the same claimed snapshot
still counted it: the crash/interrupt tail of _run_one_job_body, the
pre-handoff dispatch failure in run_one_job, and the recovered unknown
worker outcome in scheduler_worker_failure. A re-run that crashed or failed
to dispatch therefore still bumped repeat.completed a second time for an
occurrence that had already counted.
All three now pass ladder_rung=True when is_retry_run(job). The
worker-failure job is the same run_one_job snapshot, which carries
_scheduled_instant (stamped by the due scan and copied by
_process_due_job), so is_retry_run applies there too. Manual runs carry no
_scheduled_instant and still count.
The kept test gains a "crash" row: a re-run whose run_job raises must leave
repeat.completed at 1.
2bd75984ab