{
  "chapter_id": "C04",
  "title": "About",
  "method": "Built-in image_gen",
  "started_at_utc": "2026-10-27T20:55:04.332Z",
  "finished_at_utc": "2026-10-27T20:55:39.099Z",
  "dispatch_to_result_seconds": 34.767,
  "elapsed_definition": "Per-call wall time including any service queue; not GPU compute time.",
  "processing_seconds": null,
  "model": "Not exposed",
  "version": "Not exposed",
  "quantization": "Not exposed",
  "adapters_and_strengths": "Not exposed",
  "steps": "Not exposed",
  "sampler": "Not exposed",
  "scheduler": "Not exposed",
  "guidance": "Not exposed",
  "denoise": "Not exposed",
  "seed": "Not exposed",
  "worker_gpu": "Not exposed",
  "peak_vram": "Not recorded",
  "energy": "Not recorded",
  "width": 1086,
  "height": 1448,
  "native_resolution": "Internal generation resolution not exposed",
  "upscaling": "No local resize/upscale; internal pipeline not exposed",
  "frame_count": 1,
  "fps": null,
  "duration": null,
  "audio": null,
  "format": "PNG",
  "bytes": 2781927,
  "sha256": "52cd011879e0dee1f649623e64a1512e377804ecc05afafb2d9e4fc9b7632c07",
  "prompt": "source/chapter-infographics/C04-prompt.txt",
  "png_decode": "pass",
  "visual_review": "pass \u2014 readable title and captions, coherent three-part observation metaphor; editorial nature explicit",
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}