- reopen_red_review starts the timer paused (paused_at set) instead of
immediately running, since the operator hasn't resumed working yet —
blue already did this via blue_work_started_at, red needed the same
behavior via the existing pause/resume mechanism.
- update_test_red/update_test_blue now lock edits to the actual assigned
operator for leads too, not just techs — a lead could previously edit
another operator's in-progress test. Mirrored in TeamTabs.tsx.
- push_test_event reassigns the Jira ticket to the original operator
(not the reopening lead) when a test returns to red_executing or
blue_evaluating for rework, instead of leaving it on the lead.