Status: OUT
Durability bugs are permanently invisible: the write-to-verify durability pipeline is broken at both ends (fsync policy gaps prevent data from reaching stable storage, and incomplete integrity checks cannot verify it arrived), while crash/failure recovery paths are systematically excluded from testing — the system cannot detect its own durability failures through any available mechanism.
A depth-3 conclusion (durability pipeline broken) combined with depth-1 (testing gaps) produces a depth-4 epistemic impossibility: durability bugs exist and no mechanism — operational or test — can surface them
Depends on (SL): durability-pipeline-broken-at-both-ends, crash-failure-paths-systematically-untested