alice writes M1 content=v0-bcc7dda1da8f461a92a133cdad726428 on node-1
  M1 id=34eb6f24-e51a-46bb-a7ff-45b1fcbdb5da
settle 5s for initial replication
alice + bob issue concurrent PUTs (vA=va-2c0fcf5e9629482ca7f8efde923dd94f from alice, vB=vb-37dbb81becec4e879f56398d819a13ac from bob)
  concurrent PUT results: [(0, {'body': {'access_count': 0, 'confidence': 1.0, 'content': 'va-2c0fcf5e9629482ca7f8efde923dd94f', 'created_at': '2026-04-24T06:46:03.541952248+00:00', 'expires_at': '2026-05-01T06:46:03.541952248+00:00', 'id': '34eb6f24-e51a-46bb-a7ff-45b1fcbdb5da', 'metadata': {'agent_id': 'ai:alice', 'scenario': '13'}, 'namespace': 'scenario13-contention', 'priority': 5, 'source': 'api', 'tags': [], 'tier': 'mid', 'title': 'm1', 'updated_at': '2026-04-24T06:46:09.181488858+00:00'}, 'http_code': 200}), (0, {'body': {'access_count': 0, 'confidence': 1.0, 'content': 'vb-37dbb81becec4e879f56398d819a13ac', 'created_at': '2026-04-24T06:46:03.541952248+00:00', 'expires_at': '2026-05-01T06:46:03.541952248+00:00', 'id': '34eb6f24-e51a-46bb-a7ff-45b1fcbdb5da', 'metadata': {'agent_id': 'ai:alice', 'scenario': '13'}, 'namespace': 'scenario13-contention', 'priority': 5, 'source': 'api', 'tags': [], 'tier': 'mid', 'title': 'm1', 'updated_at': '2026-04-24T06:46:09.281281489+00:00'}, 'http_code': 200})]
settle 10s for quorum convergence
  node-1 sees content=vb-37dbb81becec4e879f56398d819a13ac
  node-2 sees content=vb-37dbb81becec4e879f56398d819a13ac
  node-3 sees content=vb-37dbb81becec4e879f56398d819a13ac
  node-4 sees content=vb-37dbb81becec4e879f56398d819a13ac