{
  "progress": "Research → Angle → Song → Generate → Deliver",
  "stages": [
    {
      "id": "research",
      "output": "Evidence-backed brand brief",
      "paid": false,
      "approvalRequired": false
    },
    {
      "id": "angle",
      "output": "One buyer truth",
      "paid": false,
      "approvalRequired": false
    },
    {
      "id": "song",
      "output": "Validated lyrics, timing plan, cover art, and estimate",
      "paid": false,
      "approvalRequired": false
    },
    {
      "id": "generate",
      "output": "One ElevenLabs Music v2 MP3",
      "paid": true,
      "approvalRequired": true,
      "attemptsPerApproval": 1
    },
    {
      "id": "deliver",
      "output": "Inspected MP3, cover, and provenance",
      "paid": false,
      "approvalRequired": true
    }
  ]
}