{
  "project": "Shakuhachi (SHK-D4-P1)",
  "instrument_id": "SHK-D4-001",
  "prototype_id": "SHK-D4-P1",
  "family": "open-pipe",
  "pipeline": "cnc-lathe",
  "skill": "instrument-maker-v4",
  "skill_version": "v4.1",
  "generated_at": "2026-05-07",
  "driver": "Tony Koop",
  "files_included": [
    "design.md",
    "bom.csv",
    "sourcing.csv",
    "cut-list.csv",
    "validation.csv",
    "assembly-manual.md",
    "supplier-rfq.md",
    "drawing-brief.md",
    "visual-bom-brief.md",
    "photo-shotlist.md",
    "risks.md",
    "wolfram-starter.wl",
    "shakuhachi-design-table.xlsx",
    "README.md",
    "site/index.html",
    "cad/shakuhachi_master.scad",
    "cad/README.md",
    "cnc/README.md",
    "drawings/SHK-D4-P1-overall.svg",
    "drawings/SHK-D4-P1-bore-section.svg",
    "drawings/SHK-D4-P1-utaguchi.svg",
    "drawings/SHK-D4-P1-hole-layout.svg",
    "drawings/SHK-D4-P1-blank.svg",
    "drawings/SHK-fixture-vise.svg",
    "drawings/SHK-fixture-hole-jig.svg",
    "capstone-deck.pptx",
    "print-packet.html",
    "print-packet.pdf",
    "capstone-deck.md",
    "print-packet.md"
  ],
  "files_deferred": [],
  "deferred_reason": "",
  "governing_model": "open-open pipe with explicit foot + utaguchi end corrections; NAF K2 NOT applied",
  "first_prototype": {
    "id": "SHK-D4-P1",
    "fundamental_hz": 293.665,
    "physical_length_in": 21.50,
    "bore_id_in": 0.787,
    "od_in": 1.10,
    "material": "cherry, quarter-sawn",
    "bore_strategy": "headstock-driven deep-bore drilling",
    "issue_reference": "tonykoop/instrument-maker#84"
  },
  "validator_status": "see report; ran with --fix where possible"
}