{
  "schema_version": 2,
  "status": "complete",
  "updated_at": "2026-08-06T17:59:46+00:00",
  "iteration": 25,
  "stage": "complete: creation (blank slab) -> pole Q=65.5 -> refinement (no headroom)",
  "metrics": {
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    "mode_volume": null,
    "q_over_v": null,
    "wavelength_nm": 1545.1,
    "purcell_factor": 1.276
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  "coupling": null,
  "optimizer": {
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    "degrees_of_freedom": 764913,
    "decision": "converged",
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}