{
  "study_id": "g0c_sew_branch_calibration_v3",
  "split": "calibration",
  "root_seed": 2026072731,
  "replicates": 1,
  "methods": [
    "sew",
    "scaled_joint_space",
    "bounded_dls_ik",
    "task_priority_ik"
  ],
  "trajectories": [
    {
      "id": "sew_phi_wrap_linear",
      "family": "sew_phi_wrap_valid",
      "path_type": "linear",
      "sample_count": 81,
      "start": [
        -1.41892269,
        -1.12163753,
        -0.38803584,
        2.07,
        -0.11990672,
        0.28954871,
        -0.28440543
      ],
      "end": [
        -1.41892269,
        -1.12163753,
        -0.38803584,
        2.16,
        -0.11990672,
        0.28954871,
        -0.28440543
      ],
      "actual_differential": true,
      "differential_fd_step_rad": 0.0001,
      "differential_branch_jump_threshold_rad": 0.25,
      "differential_consistency_tolerance": 0.05,
      "instance_variation": {
        "enabled": false
      }
    },
    {
      "id": "sew_phi_wrap_roundtrip",
      "family": "sew_phi_wrap_valid",
      "path_type": "cosine_roundtrip",
      "sample_count": 81,
      "start": [
        -1.41892269,
        -1.12163753,
        -0.38803584,
        2.07,
        -0.11990672,
        0.28954871,
        -0.28440543
      ],
      "end": [
        -1.41892269,
        -1.12163753,
        -0.38803584,
        2.16,
        -0.11990672,
        0.28954871,
        -0.28440543
      ],
      "actual_differential": true,
      "differential_fd_step_rad": 0.0001,
      "differential_branch_jump_threshold_rad": 0.25,
      "differential_consistency_tolerance": 0.05,
      "instance_variation": {
        "enabled": false
      }
    }
  ],
  "status": "Deterministic branch-crossing regression fixture; one fixed path instance is not statistical calibration or tail-latency evidence"
}