{
  "finding": "STD2-015",
  "title": "Double helix",
  "recorded_result": "Double helix contains 1,359 vertices / 2,584 triangles, versus the selected slide’s 161 / 272. All 2,584 double-helix UV polygon records validate.",
  "checking_steps": [
    "Compare dblhelix.lws with selected helix.lws and follow each to its own model; verify the UV sidecar against polygon indices and surface assignments.",
    "The two names do not establish a replacement sequence. Keep shared base.tga outside any claim that every dependency is unused."
  ],
  "limitations": "A replacement relationship with the selected helix slide has not been established.",
  "scope": "The recorded result and checking steps summarize preserved excavation research. The source observations below were recomputed for publication review; they do not rerun the earlier geometry fits, UV checks, reference scans or original-x86 experiments.",
  "source_observations": [
    {
      "archive": "edpieces",
      "name": "base.tga",
      "size": 49196,
      "sha256": "d133c4e53cfa2001dc58de9319cd1bcd1b6cb39d76510394838173faa44097f4",
      "identity": "edpieces/base.tga"
    },
    {
      "archive": "edpieces",
      "name": "contents.obv",
      "size": 302703,
      "sha256": "8ba24a802eb4d1553f5b80096917a0eab7b2179579cc51e9b4a877961e100ca5",
      "identity": "edpieces/contents.obv"
    },
    {
      "archive": "edpieces",
      "name": "dblhelix.lwo",
      "size": 42558,
      "sha256": "b28fa57ef02f91ea7a9b11584a89c7fddfb0523440f7322b33f4c0ae309ed2c2",
      "identity": "edpieces/dblhelix.lwo",
      "mesh": {
        "format": "LWOB",
        "vertices": 1359,
        "polygon_records": 2584,
        "polygon_vertex_counts": {
          "3": 2584
        },
        "fan_triangles_excluding_lines_points": 2584,
        "PNTS_sha256": "bef2de1326428cb210e738030281686a381a98a41af1f75f1ce3785605051b87",
        "POLS_sha256": "8ce2c31aade531b8ddc3ecc7edf2198597205ad569e5f6ff5ad4bab12e9b70af"
      }
    },
    {
      "archive": "edpieces",
      "name": "dblhelix.lws",
      "size": 1455,
      "sha256": "b4cfee15c9a8d2032a176f29b70217406b8c86bfb12ed4c3ba4c1d48bbb70088",
      "identity": "edpieces/dblhelix.lws",
      "scene": {
        "objects": [
          {
            "model_basename": "dblhelix.lwo",
            "ShowObject": [
              "7",
              "7"
            ]
          }
        ]
      }
    },
    {
      "archive": "edpieces",
      "name": "helix.lwo",
      "size": 7146,
      "sha256": "9eda79c138e28c4ff5b1fe4789bdc9da1c877fefe8daa20ae5d51272fc6f4811",
      "identity": "edpieces/helix.lwo",
      "mesh": {
        "format": "LWOB",
        "vertices": 161,
        "polygon_records": 272,
        "polygon_vertex_counts": {
          "3": 272
        },
        "fan_triangles_excluding_lines_points": 272,
        "PNTS_sha256": "bfcae054977308da231c42b45c62b8232ef7338ed3183e2b2be07de583164cea",
        "POLS_sha256": "84939e0c6993706e5da2405a586d5eca1b95afe3020e59022f511cf4cc8f0047"
      }
    },
    {
      "archive": "edpieces",
      "name": "helix.lws",
      "size": 2077,
      "sha256": "caa8a91bd1c791d66e1a06abb382dd03307fd7dcb7387b0128bb38878833ef08",
      "identity": "edpieces/helix.lws",
      "scene": {
        "objects": [
          {
            "model_basename": "helix.lwo",
            "ShowObject": [
              "8",
              "7"
            ]
          },
          {
            "model_basename": "coin.lwo",
            "ShowObject": [
              "8",
              "7"
            ]
          }
        ]
      }
    },
    {
      "archive": "uplay",
      "name": "base.tga",
      "size": 196652,
      "sha256": "1be7339d7765f16572a575125d9f1cd90b8939d340b7e76a22f36486fe2a4d31",
      "identity": "uplay/base.tga"
    }
  ],
  "source_selection": "Files named in the canonical research note, including related models and controls. This is not a claim that every listed file is unused or a complete dependency closure.",
  "preserved_research_records": [
    {
      "record": "DBLHELIX_REACHABILITY.md",
      "sha256": "d0d77ecb8b77dc726d25955702c21178e82457332133e6516a5fa2bf085a6fde"
    },
    {
      "record": "dblhelix_reference_audit.json",
      "sha256": "6aeb75d7d1d488d372a245aafbeec1654b3da8ad9feb4a826aeeae6b8121548f"
    }
  ],
  "record_provenance": "Research-record hashes bind this summary to preserved local records. They do not make those internal records downloadable or replace the original source checks.",
  "fresh_audit": "/evidence/stunt-track-driver-2/source-audit.json",
  "bounded_relationship_audit": "/evidence/stunt-track-driver-2/relationship-audit.json"
}