Main CI job 101407611069 failed when the pending-start test restored unrelated active alerts from the shared data directory. A synthetic persisted alert reproduces the same failure locally. Give all three legacy threshold fixtures their own temporary directory and stop their workers during cleanup, retaining every threshold and pending-start assertion.
Validation: seeded-directory focused race tests pass 30 repetitions after failing before the repair. No production alert behaviour changes.
Change-source: pulse-maintainer
pulse-triage[bot]
bb1d177d87