Quarantine test files consistently failing on the non-blocking full-suite
CI on main, per the AGENTS.md deletion-ratchet policy:
Engine-default (shard 1-2): ce-workflow-step-conventions,
executor-column-agent-principal, restart.integration,
scheduler-node-unreachable-audit, scheduler-overlap-starvation,
scheduler-ephemeral-toggle, user-configured-command-no-execsync
Engine-reliability (shard 1): lease-recovery-central-claim,
owning-node-unavailable-interactions, todo-inprogress-flapping
CLI (shard 3): extension.test.ts
Each has a matching entry in scripts/lib/test-quarantine.json with the
failing CI run link and quarantinedAt date. Tests will be deleted
after 14 days unless rescued with a root-cause fix.
9020f5774e