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{
  "schema": "dvidia.graspability/v3",
  "split": "heldout",
  "fixture_sha256": "c33ef6991379fda77d6084931d2b4b3665830ffa448f9ea403a65d2c37b757a3",
  "cohort": "fresh-layout-factorial-v03",
  "attempts": [
    {
      "id": "grasp-fresh-01-light-easy-block-mounted",
      "task": "in-reach-graspability",
      "policy": "shared-v03",
      "case": {
        "id": "grasp-fresh-01-light",
        "replicate_id": "grasp-fresh-layout-01",
        "load_band": "lightweight-control",
        "mass": 0.03,
        "object_x": 0.391,
        "object_y": -0.113,
        "friction": 0.54,
        "object_shape": "easy-block",
        "tool_condition": "mounted",
        "split": "heldout"
      }
    },
    {
      "id": "grasp-fresh-01-light-easy-block-absent",
      "task": "in-reach-graspability",
      "policy": "shared-v03",
      "case": {
        "id": "grasp-fresh-01-light",
        "replicate_id": "grasp-fresh-layout-01",
        "load_band": "lightweight-control",
        "mass": 0.03,
        "object_x": 0.391,
        "object_y": -0.113,
        "friction": 0.54,
        "object_shape": "easy-block",
        "tool_condition": "absent",
        "split": "heldout"
      }
    },
    {
      "id": "grasp-fresh-01-light-simplified-shoe-mounted",
      "task": "in-reach-graspability",
      "policy": "shared-v03",
      "case": {
        "id": "grasp-fresh-01-light",
        "replicate_id": "grasp-fresh-layout-01",
        "load_band": "lightweight-control",
        "mass": 0.03,
        "object_x": 0.391,
        "object_y": -0.113,
        "friction": 0.54,
        "object_shape": "simplified-shoe",
        "tool_condition": "mounted",
        "split": "heldout"
      }
    },
    {
      "id": "grasp-fresh-01-light-simplified-shoe-absent",
      "task": "in-reach-graspability",
      "policy": "shared-v03",
      "case": {
        "id": "grasp-fresh-01-light",
        "replicate_id": "grasp-fresh-layout-01",
        "load_band": "lightweight-control",
        "mass": 0.03,
        "object_x": 0.391,
        "object_y": -0.113,
        "friction": 0.54,
        "object_shape": "simplified-shoe",
        "tool_condition": "absent",
        "split": "heldout"
      }
    },
    {
      "id": "grasp-fresh-01-light-current-shoe-mounted",
      "task": "in-reach-graspability",
      "policy": "shared-v03",
      "case": {
        "id": "grasp-fresh-01-light",
        "replicate_id": "grasp-fresh-layout-01",
        "load_band": "lightweight-control",
        "mass": 0.03,
        "object_x": 0.391,
        "object_y": -0.113,
        "friction": 0.54,
        "object_shape": "current-shoe",
        "tool_condition": "mounted",
        "split": "heldout"
      }
    },
    {
      "id": "grasp-fresh-01-light-current-shoe-absent",
      "task": "in-reach-graspability",
      "policy": "shared-v03",
      "case": {
        "id": "grasp-fresh-01-light",
        "replicate_id": "grasp-fresh-layout-01",
        "load_band": "lightweight-control",
        "mass": 0.03,
        "object_x": 0.391,
        "object_y": -0.113,
        "friction": 0.54,
        "object_shape": "current-shoe",
        "tool_condition": "absent",
        "split": "heldout"
      }
    },
    {
      "id": "grasp-fresh-01-reference-easy-block-mounted",
      "task": "in-reach-graspability",
      "policy": "shared-v03",
      "case": {
        "id": "grasp-fresh-01-reference",
        "replicate_id": "grasp-fresh-layout-01",
        "load_band": "reference-load",
        "mass": 0.3,
        "object_x": 0.391,
        "object_y": -0.113,
        "friction": 0.54,
        "object_shape": "easy-block",
        "tool_condition": "mounted",
        "split": "heldout"
      }
    },
    {
      "id": "grasp-fresh-01-reference-easy-block-absent",
      "task": "in-reach-graspability",
      "policy": "shared-v03",
      "case": {
        "id": "grasp-fresh-01-reference",
        "replicate_id": "grasp-fresh-layout-01",
        "load_band": "reference-load",
        "mass": 0.3,
        "object_x": 0.391,
        "object_y": -0.113,
        "friction": 0.54,
        "object_shape": "easy-block",
        "tool_condition": "absent",
        "split": "heldout"
      }
    },
    {
      "id": "grasp-fresh-01-reference-simplified-shoe-mounted",
      "task": "in-reach-graspability",
      "policy": "shared-v03",
      "case": {
        "id": "grasp-fresh-01-reference",
        "replicate_id": "grasp-fresh-layout-01",
        "load_band": "reference-load",
        "mass": 0.3,
        "object_x": 0.391,
        "object_y": -0.113,
        "friction": 0.54,
        "object_shape": "simplified-shoe",
        "tool_condition": "mounted",
        "split": "heldout"
      }
    },
    {
      "id": "grasp-fresh-01-reference-simplified-shoe-absent",
      "task": "in-reach-graspability",
      "policy": "shared-v03",
      "case": {
        "id": "grasp-fresh-01-reference",
        "replicate_id": "grasp-fresh-layout-01",
        "load_band": "reference-load",
        "mass": 0.3,
        "object_x": 0.391,
        "object_y": -0.113,
        "friction": 0.54,
        "object_shape": "simplified-shoe",
        "tool_condition": "absent",
        "split": "heldout"
      }
    },
    {
      "id": "grasp-fresh-01-reference-current-shoe-mounted",
      "task": "in-reach-graspability",
      "policy": "shared-v03",
      "case": {
        "id": "grasp-fresh-01-reference",
        "replicate_id": "grasp-fresh-layout-01",
        "load_band": "reference-load",
        "mass": 0.3,
        "object_x": 0.391,
        "object_y": -0.113,
        "friction": 0.54,
        "object_shape": "current-shoe",
        "tool_condition": "mounted",
        "split": "heldout"
      }
    },
    {
      "id": "grasp-fresh-01-reference-current-shoe-absent",
      "task": "in-reach-graspability",
      "policy": "shared-v03",
      "case": {
        "id": "grasp-fresh-01-reference",
        "replicate_id": "grasp-fresh-layout-01",
        "load_band": "reference-load",
        "mass": 0.3,
        "object_x": 0.391,
        "object_y": -0.113,
        "friction": 0.54,
        "object_shape": "current-shoe",
        "tool_condition": "absent",
        "split": "heldout"
      }
    },
    {
      "id": "grasp-fresh-02-light-easy-block-mounted",
      "task": "in-reach-graspability",
      "policy": "shared-v03",
      "case": {
        "id": "grasp-fresh-02-light",
        "replicate_id": "grasp-fresh-layout-02",
        "load_band": "lightweight-control",
        "mass": 0.03,
        "object_x": 0.429,
        "object_y": -0.071,
        "friction": 0.91,
        "object_shape": "easy-block",
        "tool_condition": "mounted",
        "split": "heldout"
      }
    },
    {
      "id": "grasp-fresh-02-light-easy-block-absent",
      "task": "in-reach-graspability",
      "policy": "shared-v03",
      "case": {
        "id": "grasp-fresh-02-light",
        "replicate_id": "grasp-fresh-layout-02",
        "load_band": "lightweight-control",
        "mass": 0.03,
        "object_x": 0.429,
        "object_y": -0.071,
        "friction": 0.91,
        "object_shape": "easy-block",
        "tool_condition": "absent",
        "split": "heldout"
      }
    },
    {
      "id": "grasp-fresh-02-light-simplified-shoe-mounted",
      "task": "in-reach-graspability",
      "policy": "shared-v03",
      "case": {
        "id": "grasp-fresh-02-light",
        "replicate_id": "grasp-fresh-layout-02",
        "load_band": "lightweight-control",
        "mass": 0.03,
        "object_x": 0.429,
        "object_y": -0.071,
        "friction": 0.91,
        "object_shape": "simplified-shoe",
        "tool_condition": "mounted",
        "split": "heldout"
      }
    },
    {
      "id": "grasp-fresh-02-light-simplified-shoe-absent",
      "task": "in-reach-graspability",
      "policy": "shared-v03",
      "case": {
        "id": "grasp-fresh-02-light",
        "replicate_id": "grasp-fresh-layout-02",
        "load_band": "lightweight-control",
        "mass": 0.03,
        "object_x": 0.429,
        "object_y": -0.071,
        "friction": 0.91,
        "object_shape": "simplified-shoe",
        "tool_condition": "absent",
        "split": "heldout"
      }
    },
    {
      "id": "grasp-fresh-02-light-current-shoe-mounted",
      "task": "in-reach-graspability",
      "policy": "shared-v03",
      "case": {
        "id": "grasp-fresh-02-light",
        "replicate_id": "grasp-fresh-layout-02",
        "load_band": "lightweight-control",
        "mass": 0.03,
        "object_x": 0.429,
        "object_y": -0.071,
        "friction": 0.91,
        "object_shape": "current-shoe",
        "tool_condition": "mounted",
        "split": "heldout"
      }
    },
    {
      "id": "grasp-fresh-02-light-current-shoe-absent",
      "task": "in-reach-graspability",
      "policy": "shared-v03",
      "case": {
        "id": "grasp-fresh-02-light",
        "replicate_id": "grasp-fresh-layout-02",
        "load_band": "lightweight-control",
        "mass": 0.03,
        "object_x": 0.429,
        "object_y": -0.071,
        "friction": 0.91,
        "object_shape": "current-shoe",
        "tool_condition": "absent",
        "split": "heldout"
      }
    },
    {
      "id": "grasp-fresh-02-reference-easy-block-mounted",
      "task": "in-reach-graspability",
      "policy": "shared-v03",
      "case": {
        "id": "grasp-fresh-02-reference",
        "replicate_id": "grasp-fresh-layout-02",
        "load_band": "reference-load",
        "mass": 0.3,
        "object_x": 0.429,
        "object_y": -0.071,
        "friction": 0.91,
        "object_shape": "easy-block",
        "tool_condition": "mounted",
        "split": "heldout"
      }
    },
    {
      "id": "grasp-fresh-02-reference-easy-block-absent",
      "task": "in-reach-graspability",
      "policy": "shared-v03",
      "case": {
        "id": "grasp-fresh-02-reference",
        "replicate_id": "grasp-fresh-layout-02",
        "load_band": "reference-load",
        "mass": 0.3,
        "object_x": 0.429,
        "object_y": -0.071,
        "friction": 0.91,
        "object_shape": "easy-block",
        "tool_condition": "absent",
        "split": "heldout"
      }
    },
    {
      "id": "grasp-fresh-02-reference-simplified-shoe-mounted",
      "task": "in-reach-graspability",
      "policy": "shared-v03",
      "case": {
        "id": "grasp-fresh-02-reference",
        "replicate_id": "grasp-fresh-layout-02",
        "load_band": "reference-load",
        "mass": 0.3,
        "object_x": 0.429,
        "object_y": -0.071,
        "friction": 0.91,
        "object_shape": "simplified-shoe",
        "tool_condition": "mounted",
        "split": "heldout"
      }
    },
    {
      "id": "grasp-fresh-02-reference-simplified-shoe-absent",
      "task": "in-reach-graspability",
      "policy": "shared-v03",
      "case": {
        "id": "grasp-fresh-02-reference",
        "replicate_id": "grasp-fresh-layout-02",
        "load_band": "reference-load",
        "mass": 0.3,
        "object_x": 0.429,
        "object_y": -0.071,
        "friction": 0.91,
        "object_shape": "simplified-shoe",
        "tool_condition": "absent",
        "split": "heldout"
      }
    },
    {
      "id": "grasp-fresh-02-reference-current-shoe-mounted",
      "task": "in-reach-graspability",
      "policy": "shared-v03",
      "case": {
        "id": "grasp-fresh-02-reference",
        "replicate_id": "grasp-fresh-layout-02",
        "load_band": "reference-load",
        "mass": 0.3,
        "object_x": 0.429,
        "object_y": -0.071,
        "friction": 0.91,
        "object_shape": "current-shoe",
        "tool_condition": "mounted",
        "split": "heldout"
      }
    },
    {
      "id": "grasp-fresh-02-reference-current-shoe-absent",
      "task": "in-reach-graspability",
      "policy": "shared-v03",
      "case": {
        "id": "grasp-fresh-02-reference",
        "replicate_id": "grasp-fresh-layout-02",
        "load_band": "reference-load",
        "mass": 0.3,
        "object_x": 0.429,
        "object_y": -0.071,
        "friction": 0.91,
        "object_shape": "current-shoe",
        "tool_condition": "absent",
        "split": "heldout"
      }
    }
  ],
  "criteria": {
    "native_dt_s": 0.002,
    "policy_dt_s": 0.02,
    "initial_settle_s": 0.4,
    "reference_window_s": 0.1,
    "reference_axis_range_max_m": 0.001,
    "reference_scope": "At the fixed 0.4 s native timestamp, the previous 50 ticks must each show world normal force >0.01 N and aggregate robot/tool normal force <0.01 N, with range <=1 mm on each position axis. The reference height is read from the native trace, never trusted from an event coordinate.",
    "final_retention_s": 0.5,
    "final_retention_ticks": 250,
    "relative_origin_lift_min_m": 0.035,
    "finger_force_min_n": 0.01,
    "support_force_max_n": 0.01,
    "height_scope": "Object body-origin rise >=35 mm from the verified settled reference, on every final native tick. Actual lowest collision-surface height is an additional diagnostic and does not replace the fixed criterion.",
    "support_scope": "Both finger normal forces >0.01 N; world, tool and other-robot normal forces each <0.01 N during the final 500 ms. Synthetic evidence thresholds, not calibrated hardware limits.",
    "abort_scope": "All planned attempts remain in the denominator. A recorded physical abort, short run or unsettled initialization cannot pass. Corrupt or incomplete native evidence is invalid and also cannot pass. No outcome-dependent exclusion or private retry."
  },
  "design": "Direct in-reach pickup, crossing three object shapes, two explicit loads, two tool states and two fresh layout/friction replicates: 24 confirmation attempts. A single fixed authored controller uses a declared geometry-aware grasp-position rule. Layout and friction vary jointly between the two deterministic replicates; these are not random population samples or confidence-interval estimates. Development uses one separate known layout crossed with the same two loads, three shapes and two tool states.",
  "comparison": "Within each layout and load, object mass, friction, spawn position, robot actuators and control settings are matched across all six shape/tool cells. Load pairs share the same layout and friction. Changing shape necessarily changes contact geometry and inertia; removing the mounted rake changes wrist mass/inertia as well as clearance. Tool absence is a morphology ablation, not successful tool detachment. Report shape \u00d7 load \u00d7 tool results separately; never present easy-object lifts as shoe-skill success.",
  "cohort_access": "The independent evaluator seals the fresh parameter cases before the final controller is frozen. Controller tuning may use development only. Do not inspect or execute fresh cases until a source freeze is recorded. After the first evaluation these cases are known regressions; rerunning them does not create new confirmation evidence.",
  "scope": "Authored direct-pickup diagnostic with privileged native observations, assumed rigid-object contact properties and pinned simulation actuators. No retrieval, learned policy, tool acquisition, deformable shoe, physical grip-capacity measurement or hardware-transfer claim. Frozen v02 retrieval results remain separate regressions and are not pooled into this study.",
  "source_commit": "73057dc259c6a19344906f4a43a283553e17ade0",
  "implementation_sha256": {
    "graspability.py": "735239a7071cbfd3258d09f260bb2bd82b7a0a4577013cae594bfb8542ea03ee",
    "graspability_protocol.py": "6df01c6b7441859573052510d2b7e95d207d93f9a02a383771a9174bfb6b43e5",
    "graspability_protocol_v03.json": "c33ef6991379fda77d6084931d2b4b3665830ffa448f9ea403a65d2c37b757a3",
    "graspability_benchmark.py": "47687b0a214140d16cb29611b7f933945398cf4ba82064dfa58b30cbef4f2308",
    "workstation.py": "2a6aa6686b5b273efcfb21156952df8ceca88d991674cd17df92f2dccc11b701",
    "asset_library.py": "12520ca13b7806004be37a0d7e0d1e023c90410c1eba899296fdcd5b28fdc7f7",
    "asset_catalog.json": "592f363389a96fef7f9223737aa72a2f1a74f400238924bf6790ec5bfd3302b7",
    "robot_profiles.py": "fb90782a6a9979e282182118ae0e3e29d00f101255cc57378dd3f692672bb13d",
    "robot_profiles.lock.json": "4b2ee2ca675aceb2f826983cb3082a3e08e9aa0ff419b23078abcff08ebcc6fe",
    "prerequisite_benchmark.py": "c78efb24263300c56f50413aa65333e4fbf1b99403aa816de9bf4cb5656a3811",
    "asset_preview.py": "12f4806162504a3c8773b10b516d6b7abb05f670a1f5817be144ea98fc1d25d8",
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