Serialize dual snapshot and playback transitions

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    "author": {
      "email": "drschwabe@fastmail.com",
      "name": "Derrick Schwabe",
      "time": 1788004408
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      "email": "drschwabe@fastmail.com",
      "name": "Derrick Schwabe",
      "time": 1788004408
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    "message": "Serialize dual snapshot and playback transitions",
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    "summary": "Serialize dual snapshot and playback transitions",
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  "issuedAt": "2026-08-30T14:41:33.628Z",
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