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      {
        "name": "character click samples deep water and swims",
        "passed": true
      },
      {
        "name": "character drag reaches land",
        "passed": true
      },
      {
        "name": "character drag preserves independent vessel",
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      },
      {
        "name": "release ends probe drag",
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      },
      {
        "name": "vessel click samples deep water and floats",
        "passed": true
      },
      {
        "name": "vessel drag outside has no clearance",
        "passed": true
      },
      {
        "name": "reload updates both probe depths synchronously",
        "passed": true
      },
      {
        "name": "both probes and material share new revision",
        "passed": true
      },
      {
        "name": "pan zoom preserves both gameplay results",
        "passed": true
      },
      {
        "name": "reset restores data positions states and view",
        "passed": true
      },
      {
        "name": "pan_zoom_keeps_pinned_depth",
        "passed": true
      },
      {
        "name": "grayscale_button_reaches_shader",
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      },
      {
        "name": "palette_button_restores_shader",
        "passed": true
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    ],
    "utc": "2026-09-08T06:22:05"
  },
  "figure_geometry": {
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    "transect_y_m": 0,
    "projection": "orthographic; dx/d_depth=0.5; no refraction",
    "vertical_exaggeration": 1,
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        "intersects_terrain": false,
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    ],
    "note": "Geometric illustration only; not a runtime occlusion test."
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  "images_sha256": {
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    "lake-plan-and-depth.png": "7e629cf61715e8a42ebbd0639f6ae433df2b494f6899d5bc1a6449cb160e9c22",
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  "limits": [
    "Single-point gameplay probes; no collision controller.",
    "Cross-section is an explanatory diagram; no runtime refraction or occlusion.",
    "Verified only on the recorded engine/renderer/device."
  ]
}