{
  "schema": "contextra.fight-refined-prototype.v1",
  "frozen": true,
  "status": "USER_HOLD_NOT_ADOPTED",
  "candidate_id": "B_Refined",
  "selected_trial": "R4",
  "config": {
    "window": 1.0, "min_samples": 2, "seed_seconds": 0.6,
    "hand_speed": 0.55, "hand_near": 0.18, "hand_vertical": 0.12,
    "direction": 0.35, "approach": 0.15,
    "foot_speed": 0.70, "foot_near": 0.20, "foot_vertical": 0.20,
    "contact_speed": 0.25, "contact_near": 0.075, "contact_min_samples": 3,
    "response_min": 0.15, "hand_contact_max": 0.12, "target_hand_level": 0.15,
    "display_hold": 1.0
  },
  "refinement": {"compact_hand": 0.12, "compact_max_speed": 1.0, "compact_max_motion": 0.10},
  "interpretation": "Suppress local hand evidence and its seed/contact updates only when shoulder-relative reach <0.12 body height, speed <=1.0 body height/s and observed displacement <=0.10 body height. This is not an action classifier.",
  "limitations": ["Residual false activations", "Positive-reference losses need user decision", "No production acceptance", "Cxx and L02 are overlapping, differently sampled evidence"]
}