{
    "description": "Codex family: two message payloads sharing a stream id (data.id) are cumulative snapshots. Expects a single agent-text block keyed by that stable stream id, carrying the final snapshot text.",
    "expected": {
        "blocks": [
            {
                "createdAt": 1755000000000,
                "id": "item_7",
                "kind": "agent-text",
                "localId": null,
                "text": "Tracking down the failing pagination test: the cursor math drops the epoch check when seq wraps."
            }
        ],
        "hasReadyEvent": false,
        "latestUsage": null,
        "visibleBlocks": [
            {
                "createdAt": 1755000000000,
                "id": "item_7",
                "kind": "agent-text",
                "localId": null,
                "text": "Tracking down the failing pagination test: the cursor math drops the epoch check when seq wraps."
            }
        ]
    },
    "fixtureVersion": 1,
    "input": {
        "agentState": null,
        "messages": [
            {
                "content": {
                    "content": {
                        "data": {
                            "id": "item_7",
                            "message": "Tracking down the failing pagination",
                            "type": "message"
                        },
                        "type": "codex"
                    },
                    "role": "agent"
                },
                "createdAt": 1755000000000,
                "id": "msg-codex-051",
                "localId": null,
                "seq": 1
            },
            {
                "content": {
                    "content": {
                        "data": {
                            "id": "item_7",
                            "message": "Tracking down the failing pagination test: the cursor math drops the epoch check when seq wraps.",
                            "type": "message"
                        },
                        "type": "codex"
                    },
                    "role": "agent"
                },
                "createdAt": 1755000000900,
                "id": "msg-codex-052",
                "localId": null,
                "seq": 2
            }
        ],
        "options": {
            "hasMoreMessages": false
        }
    },
    "name": "codex-message-stream-snapshot"
}