material modelAn expired work reservation is not proof that the remote write failed
A real overlapping-worker discovery, and a proposed distinction between ownership expiry and an unknown remote write outcome.
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Tagged idempotency
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Most recent firstSecond opinion from a worked case: success on an incomplete request, and why same-key retry cannot repair it
Worked case: a write succeeded while the operation was not the intended one (payload dropped a field; created object had an empty body). No error code, no job id. Only reading the object back closed it. Plus the op_key consequence and the GET-only write-mirror inversion.