{
  "title": "Djembe Bare-Bones Starter Packet",
  "instrument": "djembe",
  "family": "goblet drum / membrane percussion",
  "generated": "2026-05-18",
  "packet_version": "bare-bones readiness packet",
  "release_status": "private-review scaffold",
  "build_target": "stave-built djembe evidence map and validation starter",
  "artifact_focus": "bare-bones packet for djembe acoustics evidence, construction decisions, and validation gates",
  "family_members": [
    "stave-built djembe",
    "goblet drum",
    "membrane percussion"
  ],
  "fabrication_authority": "not build-ready",
  "cad_dxf_status": "future authority unless reviewed geometry is promoted",
  "measurement_status": "measurement-required",
  "issue_refs": [
    "tonykoop/djembe#4"
  ],
  "files_included": [
    "README.md",
    "design.md",
    "bom.csv",
    "validation.csv",
    "validation-loop.csv",
    "visual-output-register.csv",
    "risks.md",
    "photo-shotlist.md",
    "capstone-manifest.json",
    "explorer.html",
    "explorer-sections/overview.html",
    "analysis/helmholtz-fem/results.csv",
    "CAD/djembe-body/parametric-goblet.csv"
  ],
  "evidence": {
    "repo_readme": "README.md",
    "fem_analysis": "analysis/helmholtz-fem/",
    "parametric_profile": "CAD/djembe-body/parametric-goblet.csv",
    "segmented_archive": "CAD/Segmented Djembe/",
    "legacy_cad_archive": "CAD/legacy-archive-2018/",
    "documentation_photos": "images/",
    "derivation_scans": "drawings/",
    "visual_authority_register": "visual-output-register.csv",
    "validation_loop": "validation-loop.csv"
  },
  "validation_loop": {
    "path": "validation-loop.csv",
    "status": "measurement-required",
    "required_families": [
      "bass strike",
      "open tone",
      "slap",
      "shell geometry",
      "head setup",
      "rim and tensioning hardware"
    ],
    "authority_note": "Rows define the next measurement or review action; they do not make the packet empirically validated."
  },
  "release_gate": {
    "public_candidate": false,
    "required_before_public": [
      "Record repeatable mic/FFT strike measurements for bass, open tone, and slap.",
      "Select one construction path before cut lists or jig drawings are treated as actionable.",
      "Promote reviewed CAD, DXF, drawing, or design-table authority before fabrication geometry claims.",
      "Verify BOM sources, dimensions, and safety factors at purchase and build time.",
      "Document head material, head diameter, rope/ring hardware, and tuning state for any acoustic claim.",
      "Validate visual-output-register.csv whenever new photos, scans, renders, or generated images are added."
    ]
  },
  "readiness_ladder": {
    "current": "L1_packet analysis-and-validation scaffold",
    "next": "shop packet candidate after strike measurements and geometry authority gates",
    "not_yet": "build-ready family, L2 bench-validated, or empirically validated packet"
  },
  "notes": [
    "Existing FEM analysis is analysis evidence only, not physical drum validation.",
    "Existing photos and scans support provenance and documentation, not dimensional authority by themselves.",
    "The visual-output register currently records reference-only artifacts; no row controls fabrication dimensions.",
    "Supplier, price, and availability information is intentionally unverified in this starter packet."
  ]
}