The quarantine management system must automatically identify and quarantine downstream tests (both Tier1 and Tier2) based on configurable failure thresholds from scheduled job results, storing quarantine records with full metadata (test name, timestamp, reason, owner, tier, linked Jira ticket) in the database with complete audit trails. The system must generate and send weekly automated reports containing quarantine counts by tier, newly quarantined tests, overdue cases (>30 days), and ownership status to designated team channels, while also notifying individual owners of their assignments. It must automatically monitor quarantined tests for stability improvements and recommend de-quarantine when criteria are met (configurable consecutive passes or pass rate thresholds), with both automated and manual de-quarantine workflows requiring justification and logging. CI/CD pipelines must integrate with the system to query quarantine status and skip quarantined tests without blocking runs, adding <5 seconds overhead and including fail-safe fallback behavior. A dashboard must display current quarantine status with filtering, historical trends (90+ days retention), and metrics including average time in quarantine, de-quarantine success rate, and most frequently quarantined tests, all accessible via API endpoints. The system must include comprehensive documentation for users and technical operations, achieve >80% unit test coverage with end-to-end integration tests, implement proper access control for manual interventions, and demonstrate >90% appropriate quarantine action rate after 2 weeks in production.