{
  "status": "completed",
  "applicable_count": 1,
  "completed_count": 1,
  "failed_count": 0,
  "schema_version": 1,
  "config_hash": "441d5bef641a0569",
  "data": {
    "overlays": {
      "L03B03": {
        "bg_id": "L03B03",
        "fp_id": "fp_l03_rooftop_exterior",
        "use_numbered_elements": [
          1,
          2,
          3,
          4,
          5,
          6,
          7,
          13,
          14,
          16
        ],
        "ignore_numbered_elements": [
          15
        ],
        "base_markers_to_reference": [
          {
            "number": 1,
            "label": "open rooftop area",
            "category": "area",
            "position_hint": "central and western portion of the roof around the rooftop room",
            "base_layer_decision": "base_structural_unit",
            "render_role": "not_applicable",
            "top_down_legibility": "not_applicable"
          },
          {
            "number": 2,
            "label": "rooftop room annex",
            "category": "area",
            "position_hint": "northeast portion of the rooftop",
            "base_layer_decision": "base_structural_unit",
            "render_role": "not_applicable",
            "top_down_legibility": "not_applicable"
          },
          {
            "number": 3,
            "label": "iron entrance door",
            "category": "opening",
            "position_hint": "west-facing facade of the rooftop room",
            "base_layer_decision": "base_opening",
            "render_role": "not_applicable",
            "top_down_legibility": "not_applicable"
          },
          {
            "number": 4,
            "label": "small facade window",
            "category": "opening",
            "position_hint": "south-facing facade of the rooftop room",
            "base_layer_decision": "base_opening",
            "render_role": "not_applicable",
            "top_down_legibility": "not_applicable"
          },
          {
            "number": 5,
            "label": "rooftop water tank",
            "category": "prop",
            "position_hint": "northwest corner of the open rooftop",
            "base_layer_decision": "base_persistent_fixture",
            "render_role": "not_applicable",
            "top_down_legibility": "not_applicable"
          },
          {
            "number": 6,
            "label": "clothesline run",
            "category": "prop",
            "position_hint": "single straight run across the western rooftop area",
            "base_layer_decision": "base_persistent_fixture",
            "render_role": "not_applicable",
            "top_down_legibility": "not_applicable"
          },
          {
            "number": 7,
            "label": "low drying platform",
            "category": "furniture",
            "position_hint": "open rooftop near the rooftop-room entrance",
            "base_layer_decision": "base_persistent_furniture",
            "render_role": "not_applicable",
            "top_down_legibility": "not_applicable"
          }
        ],
        "transient_markers_to_describe": [
          {
            "number": 13,
            "label": "forced-open door state",
            "category": "opening",
            "position_hint": "at the iron entrance door on the west-facing facade",
            "base_layer_decision": "state_overlay_plot_cue",
            "render_role": "not_applicable",
            "top_down_legibility": "not_applicable"
          },
          {
            "number": 14,
            "label": "assault silhouettes behind window",
            "category": "prop",
            "position_hint": "within the small south-facing facade window",
            "base_layer_decision": "state_overlay_plot_cue",
            "render_role": "not_applicable",
            "top_down_legibility": "not_applicable"
          },
          {
            "number": 16,
            "label": "illuminated window state",
            "category": "prop",
            "position_hint": "confined to the small south-facing facade window",
            "base_layer_decision": "state_overlay_plot_cue",
            "render_role": "not_applicable",
            "top_down_legibility": "not_applicable"
          }
        ],
        "ignored_state_overlay_markers": [
          {
            "number": 15,
            "label": "black cat",
            "category": "prop",
            "position_hint": "single spot atop the south parapet, facing the rooftop-room window",
            "base_layer_decision": "state_overlay_transient_object",
            "render_role": "not_applicable",
            "top_down_legibility": "not_applicable"
          }
        ],
        "target_unit_marker_numbers": [
          1,
          2
        ],
        "dominant_target_unit_marker_number": null,
        "clean_background_expected": false,
        "diagnostics": [
          "multiple base_structural_unit markers in use_numbered_elements ([1, 2]); dominant_target_unit_marker_number left empty (W19B-1 lock — no lexical disambiguation)"
        ]
      },
      "L03B01": {
        "bg_id": "L03B01",
        "fp_id": "fp_l03_rooftop_exterior",
        "use_numbered_elements": [
          1,
          2,
          3,
          4,
          5,
          6,
          8,
          10,
          15,
          16
        ],
        "ignore_numbered_elements": [
          13,
          14
        ],
        "base_markers_to_reference": [
          {
            "number": 1,
            "label": "open rooftop area",
            "category": "area",
            "position_hint": "central and western portion of the roof around the rooftop room",
            "base_layer_decision": "base_structural_unit",
            "render_role": "not_applicable",
            "top_down_legibility": "not_applicable"
          },
          {
            "number": 2,
            "label": "rooftop room annex",
            "category": "area",
            "position_hint": "northeast portion of the rooftop",
            "base_layer_decision": "base_structural_unit",
            "render_role": "not_applicable",
            "top_down_legibility": "not_applicable"
          },
          {
            "number": 3,
            "label": "iron entrance door",
            "category": "opening",
            "position_hint": "west-facing facade of the rooftop room",
            "base_layer_decision": "base_opening",
            "render_role": "not_applicable",
            "top_down_legibility": "not_applicable"
          },
          {
            "number": 4,
            "label": "small facade window",
            "category": "opening",
            "position_hint": "south-facing facade of the rooftop room",
            "base_layer_decision": "base_opening",
            "render_role": "not_applicable",
            "top_down_legibility": "not_applicable"
          },
          {
            "number": 5,
            "label": "rooftop water tank",
            "category": "prop",
            "position_hint": "northwest corner of the open rooftop",
            "base_layer_decision": "base_persistent_fixture",
            "render_role": "not_applicable",
            "top_down_legibility": "not_applicable"
          },
          {
            "number": 6,
            "label": "clothesline run",
            "category": "prop",
            "position_hint": "single straight run across the western rooftop area",
            "base_layer_decision": "base_persistent_fixture",
            "render_role": "not_applicable",
            "top_down_legibility": "not_applicable"
          },
          {
            "number": 8,
            "label": "north parapet run",
            "category": "area",
            "position_hint": "along the north roof edge",
            "base_layer_decision": "base_structural_unit",
            "render_role": "not_applicable",
            "top_down_legibility": "not_applicable"
          },
          {
            "number": 10,
            "label": "south parapet run",
            "category": "area",
            "position_hint": "along the south roof edge",
            "base_layer_decision": "base_structural_unit",
            "render_role": "not_applicable",
            "top_down_legibility": "not_applicable"
          }
        ],
        "transient_markers_to_describe": [
          {
            "number": 15,
            "label": "black cat",
            "category": "prop",
            "position_hint": "single spot atop the south parapet, facing the rooftop-room window",
            "base_layer_decision": "state_overlay_transient_object",
            "render_role": "not_applicable",
            "top_down_legibility": "not_applicable"
          },
          {
            "number": 16,
            "label": "illuminated window state",
            "category": "prop",
            "position_hint": "confined to the small south-facing facade window",
            "base_layer_decision": "state_overlay_plot_cue",
            "render_role": "not_applicable",
            "top_down_legibility": "not_applicable"
          }
        ],
        "ignored_state_overlay_markers": [
          {
            "number": 13,
            "label": "forced-open door state",
            "category": "opening",
            "position_hint": "at the iron entrance door on the west-facing facade",
            "base_layer_decision": "state_overlay_plot_cue",
            "render_role": "not_applicable",
            "top_down_legibility": "not_applicable"
          },
          {
            "number": 14,
            "label": "assault silhouettes behind window",
            "category": "prop",
            "position_hint": "within the small south-facing facade window",
            "base_layer_decision": "state_overlay_plot_cue",
            "render_role": "not_applicable",
            "top_down_legibility": "not_applicable"
          }
        ],
        "target_unit_marker_numbers": [
          1,
          2,
          8,
          10
        ],
        "dominant_target_unit_marker_number": null,
        "clean_background_expected": false,
        "diagnostics": [
          "multiple base_structural_unit markers in use_numbered_elements ([1, 2, 8, 10]); dominant_target_unit_marker_number left empty (W19B-1 lock — no lexical disambiguation)"
        ]
      },
      "L04B02": {
        "bg_id": "L04B02",
        "fp_id": "fp_l04_exterior_stairs",
        "use_numbered_elements": [
          4,
          5,
          6,
          7,
          8,
          9,
          10,
          13
        ],
        "ignore_numbered_elements": [],
        "base_markers_to_reference": [
          {
            "number": 4,
            "label": "upper exterior stair flight",
            "category": "area",
            "position_hint": "west side, returning from the intermediate landing toward roof level",
            "base_layer_decision": "base_structural_unit",
            "render_role": "not_applicable",
            "top_down_legibility": "not_applicable"
          },
          {
            "number": 5,
            "label": "rooftop arrival landing",
            "category": "area",
            "position_hint": "northwest roof edge at the head of the upper stair flight",
            "base_layer_decision": "base_structural_unit",
            "render_role": "not_applicable",
            "top_down_legibility": "not_applicable"
          },
          {
            "number": 6,
            "label": "rooftop terrace",
            "category": "area",
            "position_hint": "open central and eastern portion of the roof deck",
            "base_layer_decision": "base_structural_unit",
            "render_role": "not_applicable",
            "top_down_legibility": "not_applicable"
          },
          {
            "number": 7,
            "label": "rooftop dwelling enclosure",
            "category": "area",
            "position_hint": "north side of the rooftop terrace beside the arrival landing",
            "base_layer_decision": "base_structural_unit",
            "render_role": "not_applicable",
            "top_down_legibility": "not_applicable"
          },
          {
            "number": 8,
            "label": "iron entrance door",
            "category": "opening",
            "position_hint": "west-facing wall of the rooftop dwelling, directly opposite the arrival landing",
            "base_layer_decision": "base_opening",
            "render_role": "not_applicable",
            "top_down_legibility": "not_applicable"
          },
          {
            "number": 9,
            "label": "small dwelling window",
            "category": "opening",
            "position_hint": "same entrance facade as the iron door, offset toward the terrace",
            "base_layer_decision": "base_opening",
            "render_role": "not_applicable",
            "top_down_legibility": "not_applicable"
          },
          {
            "number": 10,
            "label": "rooftop water tank",
            "category": "prop",
            "position_hint": "northeast utility corner of the rooftop terrace",
            "base_layer_decision": "base_persistent_fixture",
            "render_role": "not_applicable",
            "top_down_legibility": "not_applicable"
          }
        ],
        "transient_markers_to_describe": [
          {
            "number": 13,
            "label": "half-open iron door state",
            "category": "opening",
            "position_hint": "at the iron entrance door on the rooftop dwelling facade",
            "base_layer_decision": "state_overlay_plot_cue",
            "render_role": "not_applicable",
            "top_down_legibility": "not_applicable"
          }
        ],
        "ignored_state_overlay_markers": [],
        "target_unit_marker_numbers": [
          4,
          5,
          6,
          7
        ],
        "dominant_target_unit_marker_number": null,
        "clean_background_expected": false,
        "diagnostics": [
          "multiple base_structural_unit markers in use_numbered_elements ([4, 5, 6, 7]); dominant_target_unit_marker_number left empty (W19B-1 lock — no lexical disambiguation)"
        ]
      },
      "L04B01": {
        "bg_id": "L04B01",
        "fp_id": "fp_l04_villa_yard",
        "use_numbered_elements": [
          1,
          2,
          3,
          4,
          5,
          6,
          7,
          9,
          10,
          11
        ],
        "ignore_numbered_elements": [],
        "base_markers_to_reference": [
          {
            "number": 1,
            "label": "alley approach apron",
            "category": "area",
            "position_hint": "south edge outside the courtyard gate",
            "base_layer_decision": "base_structural_unit",
            "render_role": "not_applicable",
            "top_down_legibility": "not_applicable"
          },
          {
            "number": 2,
            "label": "courtyard gate",
            "category": "opening",
            "position_hint": "south boundary between the alley approach and courtyard",
            "base_layer_decision": "base_opening",
            "render_role": "not_applicable",
            "top_down_legibility": "not_applicable"
          },
          {
            "number": 3,
            "label": "gate threshold",
            "category": "area",
            "position_hint": "immediately inside the south courtyard gate",
            "base_layer_decision": "base_structural_unit",
            "render_role": "not_applicable",
            "top_down_legibility": "not_applicable"
          },
          {
            "number": 4,
            "label": "shared courtyard",
            "category": "area",
            "position_hint": "center of the enclosed villa yard",
            "base_layer_decision": "base_structural_unit",
            "render_role": "not_applicable",
            "top_down_legibility": "not_applicable"
          },
          {
            "number": 5,
            "label": "bicycle parking nook",
            "category": "area",
            "position_hint": "recessed rear corner of the courtyard beside the building wall",
            "base_layer_decision": "base_structural_unit",
            "render_role": "not_applicable",
            "top_down_legibility": "not_applicable"
          },
          {
            "number": 6,
            "label": "exterior stair run",
            "category": "area",
            "position_hint": "along one side wall of the villa, beginning at the rear of the courtyard",
            "base_layer_decision": "base_structural_unit",
            "render_role": "not_applicable",
            "top_down_legibility": "not_applicable"
          },
          {
            "number": 7,
            "label": "villa building footprint",
            "category": "area",
            "position_hint": "north side of the plan adjoining the courtyard",
            "base_layer_decision": "base_structural_unit",
            "render_role": "not_applicable",
            "top_down_legibility": "not_applicable"
          }
        ],
        "transient_markers_to_describe": [
          {
            "number": 9,
            "label": "arriving police car",
            "category": "prop",
            "position_hint": "single parking position on the alley approach apron near the gate",
            "base_layer_decision": "state_overlay_transient_object",
            "render_role": "not_applicable",
            "top_down_legibility": "not_applicable"
          },
          {
            "number": 10,
            "label": "roughly parked bicycle",
            "category": "prop",
            "position_hint": "single spot inside the recessed bicycle parking nook",
            "base_layer_decision": "state_overlay_transient_object",
            "render_role": "not_applicable",
            "top_down_legibility": "not_applicable"
          },
          {
            "number": 11,
            "label": "police emergency-light wash",
            "category": "prop",
            "position_hint": "one contiguous patch across the vehicle approach and gate threshold around the police car",
            "base_layer_decision": "state_overlay_plot_cue",
            "render_role": "not_applicable",
            "top_down_legibility": "not_applicable"
          }
        ],
        "ignored_state_overlay_markers": [],
        "target_unit_marker_numbers": [
          1,
          3,
          4,
          5,
          6,
          7
        ],
        "dominant_target_unit_marker_number": null,
        "clean_background_expected": false,
        "diagnostics": [
          "multiple base_structural_unit markers in use_numbered_elements ([1, 3, 4, 5, 6, 7]); dominant_target_unit_marker_number left empty (W19B-1 lock — no lexical disambiguation)"
        ]
      },
      "L05B02": {
        "bg_id": "L05B02",
        "fp_id": "fp_l05_rooftop_room_interior",
        "use_numbered_elements": [
          1,
          2,
          3,
          7,
          8,
          9,
          10,
          11,
          13,
          14,
          18,
          19,
          20,
          21
        ],
        "ignore_numbered_elements": [
          25,
          26,
          27,
          28,
          29,
          30,
          31,
          32,
          33,
          34,
          35,
          36,
          37,
          38,
          39
        ],
        "base_markers_to_reference": [
          {
            "number": 1,
            "label": "Entrance threshold area",
            "category": "area",
            "position_hint": "southwest edge of the dwelling, immediately inside the exterior entrance",
            "base_layer_decision": "base_structural_unit",
            "render_role": "not_applicable",
            "top_down_legibility": "not_applicable"
          },
          {
            "number": 2,
            "label": "Shared living and dining area",
            "category": "area",
            "position_hint": "central and southern portion of the compact interior",
            "base_layer_decision": "base_structural_unit",
            "render_role": "not_applicable",
            "top_down_legibility": "not_applicable"
          },
          {
            "number": 3,
            "label": "Kitchenette service area",
            "category": "area",
            "position_hint": "west wall of the living area, close to the entrance",
            "base_layer_decision": "base_structural_unit",
            "render_role": "not_applicable",
            "top_down_legibility": "not_applicable"
          },
          {
            "number": 7,
            "label": "Exterior iron entrance door",
            "category": "opening",
            "position_hint": "southwest exterior wall, opening inward to the threshold",
            "base_layer_decision": "base_opening",
            "render_role": "not_applicable",
            "top_down_legibility": "not_applicable"
          },
          {
            "number": 8,
            "label": "Main bedroom door",
            "category": "opening",
            "position_hint": "north side of the living area, opening into the main bedroom",
            "base_layer_decision": "base_opening",
            "render_role": "not_applicable",
            "top_down_legibility": "not_applicable"
          },
          {
            "number": 9,
            "label": "Secondary bedroom door",
            "category": "opening",
            "position_hint": "east side of the living area, opening into the secondary bedroom",
            "base_layer_decision": "base_opening",
            "render_role": "not_applicable",
            "top_down_legibility": "not_applicable"
          },
          {
            "number": 10,
            "label": "Bathroom door",
            "category": "opening",
            "position_hint": "northwest side of the living area, opening into the bathroom",
            "base_layer_decision": "base_opening",
            "render_role": "not_applicable",
            "top_down_legibility": "not_applicable"
          },
          {
            "number": 11,
            "label": "Small living-room window",
            "category": "opening",
            "position_hint": "south wall of the shared living area, east of the entrance",
            "base_layer_decision": "base_opening",
            "render_role": "not_applicable",
            "top_down_legibility": "not_applicable"
          },
          {
            "number": 13,
            "label": "Kitchen sink and faucet",
            "category": "furniture",
            "position_hint": "west wall of the kitchenette, near the entrance end of the counter",
            "base_layer_decision": "base_persistent_fixture",
            "render_role": "not_applicable",
            "top_down_legibility": "not_applicable"
          },
          {
            "number": 14,
            "label": "Compact stovetop",
            "category": "furniture",
            "position_hint": "west wall of the kitchenette, immediately north of the sink",
            "base_layer_decision": "base_persistent_fixture",
            "render_role": "not_applicable",
            "top_down_legibility": "not_applicable"
          },
          {
            "number": 18,
            "label": "Dining table",
            "category": "furniture",
            "position_hint": "center of the shared living and dining area",
            "base_layer_decision": "base_persistent_furniture",
            "render_role": "not_applicable",
            "top_down_legibility": "not_applicable"
          },
          {
            "number": 19,
            "label": "South dining chair",
            "category": "furniture",
            "position_hint": "south side of the dining table",
            "base_layer_decision": "base_persistent_furniture",
            "render_role": "not_applicable",
            "top_down_legibility": "not_applicable"
          },
          {
            "number": 20,
            "label": "North dining chair",
            "category": "furniture",
            "position_hint": "north side of the dining table",
            "base_layer_decision": "base_persistent_furniture",
            "render_role": "not_applicable",
            "top_down_legibility": "not_applicable"
          },
          {
            "number": 21,
            "label": "Television and low stand",
            "category": "furniture",
            "position_hint": "east wall of the living area, south of the secondary bedroom door",
            "base_layer_decision": "base_persistent_furniture",
            "render_role": "not_applicable",
            "top_down_legibility": "not_applicable"
          }
        ],
        "transient_markers_to_describe": [],
        "ignored_state_overlay_markers": [
          {
            "number": 25,
            "label": "Blood-soaked body behind curtain",
            "category": "prop",
            "position_hint": "floor at the northeast corner of the secondary bedroom, directly behind the curtain",
            "base_layer_decision": "state_overlay_transient_object",
            "render_role": "not_applicable",
            "top_down_legibility": "not_applicable"
          },
          {
            "number": 26,
            "label": "Bloody shoulder wounds",
            "category": "prop",
            "position_hint": "shoulder area of the body behind the secondary bedroom curtain",
            "base_layer_decision": "state_overlay_plot_cue",
            "render_role": "not_applicable",
            "top_down_legibility": "not_applicable"
          },
          {
            "number": 27,
            "label": "Red wrist mark",
            "category": "prop",
            "position_hint": "wrist of the body behind the secondary bedroom curtain",
            "base_layer_decision": "state_overlay_plot_cue",
            "render_role": "not_applicable",
            "top_down_legibility": "not_applicable"
          },
          {
            "number": 28,
            "label": "Blood pool beside body",
            "category": "prop",
            "position_hint": "single contiguous floor area beneath and immediately beside the body",
            "base_layer_decision": "state_overlay_plot_cue",
            "render_role": "not_applicable",
            "top_down_legibility": "not_applicable"
          },
          {
            "number": 29,
            "label": "Bloody footprint run",
            "category": "prop",
            "position_hint": "continuous floor run from the secondary bedroom doorway toward the curtain",
            "base_layer_decision": "state_overlay_plot_cue",
            "render_role": "not_applicable",
            "top_down_legibility": "not_applicable"
          },
          {
            "number": 30,
            "label": "Upright teacup",
            "category": "prop",
            "position_hint": "northwest portion of the dining tabletop",
            "base_layer_decision": "state_overlay_transient_object",
            "render_role": "not_applicable",
            "top_down_legibility": "not_applicable"
          },
          {
            "number": 31,
            "label": "Overturned teacup",
            "category": "prop",
            "position_hint": "southeast edge of the dining tabletop",
            "base_layer_decision": "state_overlay_transient_object",
            "render_role": "not_applicable",
            "top_down_legibility": "not_applicable"
          },
          {
            "number": 32,
            "label": "Red wall circle above secondary bed",
            "category": "prop",
            "position_hint": "north wall of the secondary bedroom, centered above the bed",
            "base_layer_decision": "state_overlay_plot_cue",
            "render_role": "not_applicable",
            "top_down_legibility": "not_applicable"
          },
          {
            "number": 33,
            "label": "Hallucinated bathroom wall circle",
            "category": "prop",
            "position_hint": "northwest bathroom wall beside the mirror",
            "base_layer_decision": "state_overlay_plot_cue",
            "render_role": "not_applicable",
            "top_down_legibility": "not_applicable"
          },
          {
            "number": 34,
            "label": "Hallucinated melting family photograph",
            "category": "prop",
            "position_hint": "single framed photograph position on the dining table",
            "base_layer_decision": "state_overlay_plot_cue",
            "render_role": "not_applicable",
            "top_down_legibility": "not_applicable"
          },
          {
            "number": 35,
            "label": "Living window forced open state",
            "category": "opening",
            "position_hint": "at the small living-room window on the south wall",
            "base_layer_decision": "state_overlay_plot_cue",
            "render_role": "not_applicable",
            "top_down_legibility": "not_applicable"
          },
          {
            "number": 36,
            "label": "Overturned south dining chair",
            "category": "furniture",
            "position_hint": "floor immediately south of the dining table",
            "base_layer_decision": "state_overlay_transient_object",
            "render_role": "not_applicable",
            "top_down_legibility": "not_applicable"
          },
          {
            "number": 37,
            "label": "Scattered household goods pile",
            "category": "prop",
            "position_hint": "single concentrated pile on the living-room floor west of the dining table",
            "base_layer_decision": "state_overlay_transient_object",
            "render_role": "not_applicable",
            "top_down_legibility": "not_applicable"
          },
          {
            "number": 38,
            "label": "Intruder footprint run",
            "category": "prop",
            "position_hint": "continuous floor run from the entrance threshold into the living area",
            "base_layer_decision": "state_overlay_plot_cue",
            "render_role": "not_applicable",
            "top_down_legibility": "not_applicable"
          },
          {
            "number": 39,
            "label": "Bloody old photograph pinned to wall",
            "category": "prop",
            "position_hint": "center of the red wall circle above the secondary bed",
            "base_layer_decision": "state_overlay_transient_object",
            "render_role": "not_applicable",
            "top_down_legibility": "not_applicable"
          }
        ],
        "target_unit_marker_numbers": [
          1,
          2,
          3
        ],
        "dominant_target_unit_marker_number": null,
        "clean_background_expected": true,
        "diagnostics": [
          "multiple base_structural_unit markers in use_numbered_elements ([1, 2, 3]); dominant_target_unit_marker_number left empty (W19B-1 lock — no lexical disambiguation)"
        ]
      },
      "L05B05": {
        "bg_id": "L05B05",
        "fp_id": "fp_l05_rooftop_room_interior",
        "use_numbered_elements": [
          2,
          5,
          9,
          12,
          18,
          23,
          24,
          25,
          26,
          27,
          28,
          29,
          30,
          31,
          32
        ],
        "ignore_numbered_elements": [
          33,
          34,
          35,
          36,
          37,
          38,
          39
        ],
        "base_markers_to_reference": [
          {
            "number": 2,
            "label": "Shared living and dining area",
            "category": "area",
            "position_hint": "central and southern portion of the compact interior",
            "base_layer_decision": "base_structural_unit",
            "render_role": "not_applicable",
            "top_down_legibility": "not_applicable"
          },
          {
            "number": 5,
            "label": "Secondary bedroom area",
            "category": "area",
            "position_hint": "east side of the dwelling",
            "base_layer_decision": "base_structural_unit",
            "render_role": "not_applicable",
            "top_down_legibility": "not_applicable"
          },
          {
            "number": 9,
            "label": "Secondary bedroom door",
            "category": "opening",
            "position_hint": "east side of the living area, opening into the secondary bedroom",
            "base_layer_decision": "base_opening",
            "render_role": "not_applicable",
            "top_down_legibility": "not_applicable"
          },
          {
            "number": 12,
            "label": "Secondary bedroom window",
            "category": "opening",
            "position_hint": "east exterior wall of the secondary bedroom",
            "base_layer_decision": "base_opening",
            "render_role": "not_applicable",
            "top_down_legibility": "not_applicable"
          },
          {
            "number": 18,
            "label": "Dining table",
            "category": "furniture",
            "position_hint": "center of the shared living and dining area",
            "base_layer_decision": "base_persistent_furniture",
            "render_role": "not_applicable",
            "top_down_legibility": "not_applicable"
          },
          {
            "number": 23,
            "label": "Secondary bedroom bed",
            "category": "furniture",
            "position_hint": "north wall of the secondary bedroom, close to the east window",
            "base_layer_decision": "base_persistent_furniture",
            "render_role": "not_applicable",
            "top_down_legibility": "not_applicable"
          },
          {
            "number": 24,
            "label": "Secondary bedroom window curtain",
            "category": "furniture",
            "position_hint": "inside the east wall of the secondary bedroom, covering the window",
            "base_layer_decision": "base_persistent_furniture",
            "render_role": "not_applicable",
            "top_down_legibility": "not_applicable"
          }
        ],
        "transient_markers_to_describe": [
          {
            "number": 25,
            "label": "Blood-soaked body behind curtain",
            "category": "prop",
            "position_hint": "floor at the northeast corner of the secondary bedroom, directly behind the curtain",
            "base_layer_decision": "state_overlay_transient_object",
            "render_role": "not_applicable",
            "top_down_legibility": "not_applicable"
          },
          {
            "number": 26,
            "label": "Bloody shoulder wounds",
            "category": "prop",
            "position_hint": "shoulder area of the body behind the secondary bedroom curtain",
            "base_layer_decision": "state_overlay_plot_cue",
            "render_role": "not_applicable",
            "top_down_legibility": "not_applicable"
          },
          {
            "number": 27,
            "label": "Red wrist mark",
            "category": "prop",
            "position_hint": "wrist of the body behind the secondary bedroom curtain",
            "base_layer_decision": "state_overlay_plot_cue",
            "render_role": "not_applicable",
            "top_down_legibility": "not_applicable"
          },
          {
            "number": 28,
            "label": "Blood pool beside body",
            "category": "prop",
            "position_hint": "single contiguous floor area beneath and immediately beside the body",
            "base_layer_decision": "state_overlay_plot_cue",
            "render_role": "not_applicable",
            "top_down_legibility": "not_applicable"
          },
          {
            "number": 29,
            "label": "Bloody footprint run",
            "category": "prop",
            "position_hint": "continuous floor run from the secondary bedroom doorway toward the curtain",
            "base_layer_decision": "state_overlay_plot_cue",
            "render_role": "not_applicable",
            "top_down_legibility": "not_applicable"
          },
          {
            "number": 30,
            "label": "Upright teacup",
            "category": "prop",
            "position_hint": "northwest portion of the dining tabletop",
            "base_layer_decision": "state_overlay_transient_object",
            "render_role": "not_applicable",
            "top_down_legibility": "not_applicable"
          },
          {
            "number": 31,
            "label": "Overturned teacup",
            "category": "prop",
            "position_hint": "southeast edge of the dining tabletop",
            "base_layer_decision": "state_overlay_transient_object",
            "render_role": "not_applicable",
            "top_down_legibility": "not_applicable"
          },
          {
            "number": 32,
            "label": "Red wall circle above secondary bed",
            "category": "prop",
            "position_hint": "north wall of the secondary bedroom, centered above the bed",
            "base_layer_decision": "state_overlay_plot_cue",
            "render_role": "not_applicable",
            "top_down_legibility": "not_applicable"
          }
        ],
        "ignored_state_overlay_markers": [
          {
            "number": 33,
            "label": "Hallucinated bathroom wall circle",
            "category": "prop",
            "position_hint": "northwest bathroom wall beside the mirror",
            "base_layer_decision": "state_overlay_plot_cue",
            "render_role": "not_applicable",
            "top_down_legibility": "not_applicable"
          },
          {
            "number": 34,
            "label": "Hallucinated melting family photograph",
            "category": "prop",
            "position_hint": "single framed photograph position on the dining table",
            "base_layer_decision": "state_overlay_plot_cue",
            "render_role": "not_applicable",
            "top_down_legibility": "not_applicable"
          },
          {
            "number": 35,
            "label": "Living window forced open state",
            "category": "opening",
            "position_hint": "at the small living-room window on the south wall",
            "base_layer_decision": "state_overlay_plot_cue",
            "render_role": "not_applicable",
            "top_down_legibility": "not_applicable"
          },
          {
            "number": 36,
            "label": "Overturned south dining chair",
            "category": "furniture",
            "position_hint": "floor immediately south of the dining table",
            "base_layer_decision": "state_overlay_transient_object",
            "render_role": "not_applicable",
            "top_down_legibility": "not_applicable"
          },
          {
            "number": 37,
            "label": "Scattered household goods pile",
            "category": "prop",
            "position_hint": "single concentrated pile on the living-room floor west of the dining table",
            "base_layer_decision": "state_overlay_transient_object",
            "render_role": "not_applicable",
            "top_down_legibility": "not_applicable"
          },
          {
            "number": 38,
            "label": "Intruder footprint run",
            "category": "prop",
            "position_hint": "continuous floor run from the entrance threshold into the living area",
            "base_layer_decision": "state_overlay_plot_cue",
            "render_role": "not_applicable",
            "top_down_legibility": "not_applicable"
          },
          {
            "number": 39,
            "label": "Bloody old photograph pinned to wall",
            "category": "prop",
            "position_hint": "center of the red wall circle above the secondary bed",
            "base_layer_decision": "state_overlay_transient_object",
            "render_role": "not_applicable",
            "top_down_legibility": "not_applicable"
          }
        ],
        "target_unit_marker_numbers": [
          2,
          5
        ],
        "dominant_target_unit_marker_number": null,
        "clean_background_expected": false,
        "diagnostics": [
          "multiple base_structural_unit markers in use_numbered_elements ([2, 5]); dominant_target_unit_marker_number left empty (W19B-1 lock — no lexical disambiguation)"
        ]
      },
      "L05B06": {
        "bg_id": "L05B06",
        "fp_id": "fp_l05_rooftop_room_interior",
        "use_numbered_elements": [
          1,
          2,
          3,
          5,
          7,
          9,
          11,
          12,
          13,
          14,
          18,
          19,
          20,
          21,
          23,
          24
        ],
        "ignore_numbered_elements": [
          25,
          26,
          27,
          28,
          29,
          30,
          31,
          32,
          33,
          34,
          35,
          36,
          37,
          38,
          39
        ],
        "base_markers_to_reference": [
          {
            "number": 1,
            "label": "Entrance threshold area",
            "category": "area",
            "position_hint": "southwest edge of the dwelling, immediately inside the exterior entrance",
            "base_layer_decision": "base_structural_unit",
            "render_role": "not_applicable",
            "top_down_legibility": "not_applicable"
          },
          {
            "number": 2,
            "label": "Shared living and dining area",
            "category": "area",
            "position_hint": "central and southern portion of the compact interior",
            "base_layer_decision": "base_structural_unit",
            "render_role": "not_applicable",
            "top_down_legibility": "not_applicable"
          },
          {
            "number": 3,
            "label": "Kitchenette service area",
            "category": "area",
            "position_hint": "west wall of the living area, close to the entrance",
            "base_layer_decision": "base_structural_unit",
            "render_role": "not_applicable",
            "top_down_legibility": "not_applicable"
          },
          {
            "number": 5,
            "label": "Secondary bedroom area",
            "category": "area",
            "position_hint": "east side of the dwelling",
            "base_layer_decision": "base_structural_unit",
            "render_role": "not_applicable",
            "top_down_legibility": "not_applicable"
          },
          {
            "number": 7,
            "label": "Exterior iron entrance door",
            "category": "opening",
            "position_hint": "southwest exterior wall, opening inward to the threshold",
            "base_layer_decision": "base_opening",
            "render_role": "not_applicable",
            "top_down_legibility": "not_applicable"
          },
          {
            "number": 9,
            "label": "Secondary bedroom door",
            "category": "opening",
            "position_hint": "east side of the living area, opening into the secondary bedroom",
            "base_layer_decision": "base_opening",
            "render_role": "not_applicable",
            "top_down_legibility": "not_applicable"
          },
          {
            "number": 11,
            "label": "Small living-room window",
            "category": "opening",
            "position_hint": "south wall of the shared living area, east of the entrance",
            "base_layer_decision": "base_opening",
            "render_role": "not_applicable",
            "top_down_legibility": "not_applicable"
          },
          {
            "number": 12,
            "label": "Secondary bedroom window",
            "category": "opening",
            "position_hint": "east exterior wall of the secondary bedroom",
            "base_layer_decision": "base_opening",
            "render_role": "not_applicable",
            "top_down_legibility": "not_applicable"
          },
          {
            "number": 13,
            "label": "Kitchen sink and faucet",
            "category": "furniture",
            "position_hint": "west wall of the kitchenette, near the entrance end of the counter",
            "base_layer_decision": "base_persistent_fixture",
            "render_role": "not_applicable",
            "top_down_legibility": "not_applicable"
          },
          {
            "number": 14,
            "label": "Compact stovetop",
            "category": "furniture",
            "position_hint": "west wall of the kitchenette, immediately north of the sink",
            "base_layer_decision": "base_persistent_fixture",
            "render_role": "not_applicable",
            "top_down_legibility": "not_applicable"
          },
          {
            "number": 18,
            "label": "Dining table",
            "category": "furniture",
            "position_hint": "center of the shared living and dining area",
            "base_layer_decision": "base_persistent_furniture",
            "render_role": "not_applicable",
            "top_down_legibility": "not_applicable"
          },
          {
            "number": 19,
            "label": "South dining chair",
            "category": "furniture",
            "position_hint": "south side of the dining table",
            "base_layer_decision": "base_persistent_furniture",
            "render_role": "not_applicable",
            "top_down_legibility": "not_applicable"
          },
          {
            "number": 20,
            "label": "North dining chair",
            "category": "furniture",
            "position_hint": "north side of the dining table",
            "base_layer_decision": "base_persistent_furniture",
            "render_role": "not_applicable",
            "top_down_legibility": "not_applicable"
          },
          {
            "number": 21,
            "label": "Television and low stand",
            "category": "furniture",
            "position_hint": "east wall of the living area, south of the secondary bedroom door",
            "base_layer_decision": "base_persistent_furniture",
            "render_role": "not_applicable",
            "top_down_legibility": "not_applicable"
          },
          {
            "number": 23,
            "label": "Secondary bedroom bed",
            "category": "furniture",
            "position_hint": "north wall of the secondary bedroom, close to the east window",
            "base_layer_decision": "base_persistent_furniture",
            "render_role": "not_applicable",
            "top_down_legibility": "not_applicable"
          },
          {
            "number": 24,
            "label": "Secondary bedroom window curtain",
            "category": "furniture",
            "position_hint": "inside the east wall of the secondary bedroom, covering the window",
            "base_layer_decision": "base_persistent_furniture",
            "render_role": "not_applicable",
            "top_down_legibility": "not_applicable"
          }
        ],
        "transient_markers_to_describe": [],
        "ignored_state_overlay_markers": [
          {
            "number": 25,
            "label": "Blood-soaked body behind curtain",
            "category": "prop",
            "position_hint": "floor at the northeast corner of the secondary bedroom, directly behind the curtain",
            "base_layer_decision": "state_overlay_transient_object",
            "render_role": "not_applicable",
            "top_down_legibility": "not_applicable"
          },
          {
            "number": 26,
            "label": "Bloody shoulder wounds",
            "category": "prop",
            "position_hint": "shoulder area of the body behind the secondary bedroom curtain",
            "base_layer_decision": "state_overlay_plot_cue",
            "render_role": "not_applicable",
            "top_down_legibility": "not_applicable"
          },
          {
            "number": 27,
            "label": "Red wrist mark",
            "category": "prop",
            "position_hint": "wrist of the body behind the secondary bedroom curtain",
            "base_layer_decision": "state_overlay_plot_cue",
            "render_role": "not_applicable",
            "top_down_legibility": "not_applicable"
          },
          {
            "number": 28,
            "label": "Blood pool beside body",
            "category": "prop",
            "position_hint": "single contiguous floor area beneath and immediately beside the body",
            "base_layer_decision": "state_overlay_plot_cue",
            "render_role": "not_applicable",
            "top_down_legibility": "not_applicable"
          },
          {
            "number": 29,
            "label": "Bloody footprint run",
            "category": "prop",
            "position_hint": "continuous floor run from the secondary bedroom doorway toward the curtain",
            "base_layer_decision": "state_overlay_plot_cue",
            "render_role": "not_applicable",
            "top_down_legibility": "not_applicable"
          },
          {
            "number": 30,
            "label": "Upright teacup",
            "category": "prop",
            "position_hint": "northwest portion of the dining tabletop",
            "base_layer_decision": "state_overlay_transient_object",
            "render_role": "not_applicable",
            "top_down_legibility": "not_applicable"
          },
          {
            "number": 31,
            "label": "Overturned teacup",
            "category": "prop",
            "position_hint": "southeast edge of the dining tabletop",
            "base_layer_decision": "state_overlay_transient_object",
            "render_role": "not_applicable",
            "top_down_legibility": "not_applicable"
          },
          {
            "number": 32,
            "label": "Red wall circle above secondary bed",
            "category": "prop",
            "position_hint": "north wall of the secondary bedroom, centered above the bed",
            "base_layer_decision": "state_overlay_plot_cue",
            "render_role": "not_applicable",
            "top_down_legibility": "not_applicable"
          },
          {
            "number": 33,
            "label": "Hallucinated bathroom wall circle",
            "category": "prop",
            "position_hint": "northwest bathroom wall beside the mirror",
            "base_layer_decision": "state_overlay_plot_cue",
            "render_role": "not_applicable",
            "top_down_legibility": "not_applicable"
          },
          {
            "number": 34,
            "label": "Hallucinated melting family photograph",
            "category": "prop",
            "position_hint": "single framed photograph position on the dining table",
            "base_layer_decision": "state_overlay_plot_cue",
            "render_role": "not_applicable",
            "top_down_legibility": "not_applicable"
          },
          {
            "number": 35,
            "label": "Living window forced open state",
            "category": "opening",
            "position_hint": "at the small living-room window on the south wall",
            "base_layer_decision": "state_overlay_plot_cue",
            "render_role": "not_applicable",
            "top_down_legibility": "not_applicable"
          },
          {
            "number": 36,
            "label": "Overturned south dining chair",
            "category": "furniture",
            "position_hint": "floor immediately south of the dining table",
            "base_layer_decision": "state_overlay_transient_object",
            "render_role": "not_applicable",
            "top_down_legibility": "not_applicable"
          },
          {
            "number": 37,
            "label": "Scattered household goods pile",
            "category": "prop",
            "position_hint": "single concentrated pile on the living-room floor west of the dining table",
            "base_layer_decision": "state_overlay_transient_object",
            "render_role": "not_applicable",
            "top_down_legibility": "not_applicable"
          },
          {
            "number": 38,
            "label": "Intruder footprint run",
            "category": "prop",
            "position_hint": "continuous floor run from the entrance threshold into the living area",
            "base_layer_decision": "state_overlay_plot_cue",
            "render_role": "not_applicable",
            "top_down_legibility": "not_applicable"
          },
          {
            "number": 39,
            "label": "Bloody old photograph pinned to wall",
            "category": "prop",
            "position_hint": "center of the red wall circle above the secondary bed",
            "base_layer_decision": "state_overlay_transient_object",
            "render_role": "not_applicable",
            "top_down_legibility": "not_applicable"
          }
        ],
        "target_unit_marker_numbers": [
          1,
          2,
          3,
          5
        ],
        "dominant_target_unit_marker_number": null,
        "clean_background_expected": true,
        "diagnostics": [
          "multiple base_structural_unit markers in use_numbered_elements ([1, 2, 3, 5]); dominant_target_unit_marker_number left empty (W19B-1 lock — no lexical disambiguation)"
        ]
      },
      "L05B01": {
        "bg_id": "L05B01",
        "fp_id": "fp_l05_rooftop_room_interior",
        "use_numbered_elements": [
          2,
          6,
          10,
          11,
          15,
          16,
          17,
          18,
          33,
          34
        ],
        "ignore_numbered_elements": [
          25,
          26,
          27,
          28,
          29,
          30,
          31,
          32,
          35,
          36,
          37,
          38,
          39
        ],
        "base_markers_to_reference": [
          {
            "number": 2,
            "label": "Shared living and dining area",
            "category": "area",
            "position_hint": "central and southern portion of the compact interior",
            "base_layer_decision": "base_structural_unit",
            "render_role": "not_applicable",
            "top_down_legibility": "not_applicable"
          },
          {
            "number": 6,
            "label": "Bathroom area",
            "category": "area",
            "position_hint": "northwest corner beside the kitchenette",
            "base_layer_decision": "base_structural_unit",
            "render_role": "not_applicable",
            "top_down_legibility": "not_applicable"
          },
          {
            "number": 10,
            "label": "Bathroom door",
            "category": "opening",
            "position_hint": "northwest side of the living area, opening into the bathroom",
            "base_layer_decision": "base_opening",
            "render_role": "not_applicable",
            "top_down_legibility": "not_applicable"
          },
          {
            "number": 11,
            "label": "Small living-room window",
            "category": "opening",
            "position_hint": "south wall of the shared living area, east of the entrance",
            "base_layer_decision": "base_opening",
            "render_role": "not_applicable",
            "top_down_legibility": "not_applicable"
          },
          {
            "number": 15,
            "label": "Bathroom washbasin",
            "category": "furniture",
            "position_hint": "west wall of the bathroom near its door",
            "base_layer_decision": "base_persistent_fixture",
            "render_role": "not_applicable",
            "top_down_legibility": "not_applicable"
          },
          {
            "number": 16,
            "label": "Bathroom toilet",
            "category": "furniture",
            "position_hint": "north wall of the bathroom",
            "base_layer_decision": "base_persistent_fixture",
            "render_role": "not_applicable",
            "top_down_legibility": "not_applicable"
          },
          {
            "number": 17,
            "label": "Bathroom wall mirror",
            "category": "prop",
            "position_hint": "west wall of the bathroom directly above the washbasin",
            "base_layer_decision": "base_persistent_fixture",
            "render_role": "not_applicable",
            "top_down_legibility": "not_applicable"
          },
          {
            "number": 18,
            "label": "Dining table",
            "category": "furniture",
            "position_hint": "center of the shared living and dining area",
            "base_layer_decision": "base_persistent_furniture",
            "render_role": "not_applicable",
            "top_down_legibility": "not_applicable"
          }
        ],
        "transient_markers_to_describe": [
          {
            "number": 33,
            "label": "Hallucinated bathroom wall circle",
            "category": "prop",
            "position_hint": "northwest bathroom wall beside the mirror",
            "base_layer_decision": "state_overlay_plot_cue",
            "render_role": "not_applicable",
            "top_down_legibility": "not_applicable"
          },
          {
            "number": 34,
            "label": "Hallucinated melting family photograph",
            "category": "prop",
            "position_hint": "single framed photograph position on the dining table",
            "base_layer_decision": "state_overlay_plot_cue",
            "render_role": "not_applicable",
            "top_down_legibility": "not_applicable"
          }
        ],
        "ignored_state_overlay_markers": [
          {
            "number": 25,
            "label": "Blood-soaked body behind curtain",
            "category": "prop",
            "position_hint": "floor at the northeast corner of the secondary bedroom, directly behind the curtain",
            "base_layer_decision": "state_overlay_transient_object",
            "render_role": "not_applicable",
            "top_down_legibility": "not_applicable"
          },
          {
            "number": 26,
            "label": "Bloody shoulder wounds",
            "category": "prop",
            "position_hint": "shoulder area of the body behind the secondary bedroom curtain",
            "base_layer_decision": "state_overlay_plot_cue",
            "render_role": "not_applicable",
            "top_down_legibility": "not_applicable"
          },
          {
            "number": 27,
            "label": "Red wrist mark",
            "category": "prop",
            "position_hint": "wrist of the body behind the secondary bedroom curtain",
            "base_layer_decision": "state_overlay_plot_cue",
            "render_role": "not_applicable",
            "top_down_legibility": "not_applicable"
          },
          {
            "number": 28,
            "label": "Blood pool beside body",
            "category": "prop",
            "position_hint": "single contiguous floor area beneath and immediately beside the body",
            "base_layer_decision": "state_overlay_plot_cue",
            "render_role": "not_applicable",
            "top_down_legibility": "not_applicable"
          },
          {
            "number": 29,
            "label": "Bloody footprint run",
            "category": "prop",
            "position_hint": "continuous floor run from the secondary bedroom doorway toward the curtain",
            "base_layer_decision": "state_overlay_plot_cue",
            "render_role": "not_applicable",
            "top_down_legibility": "not_applicable"
          },
          {
            "number": 30,
            "label": "Upright teacup",
            "category": "prop",
            "position_hint": "northwest portion of the dining tabletop",
            "base_layer_decision": "state_overlay_transient_object",
            "render_role": "not_applicable",
            "top_down_legibility": "not_applicable"
          },
          {
            "number": 31,
            "label": "Overturned teacup",
            "category": "prop",
            "position_hint": "southeast edge of the dining tabletop",
            "base_layer_decision": "state_overlay_transient_object",
            "render_role": "not_applicable",
            "top_down_legibility": "not_applicable"
          },
          {
            "number": 32,
            "label": "Red wall circle above secondary bed",
            "category": "prop",
            "position_hint": "north wall of the secondary bedroom, centered above the bed",
            "base_layer_decision": "state_overlay_plot_cue",
            "render_role": "not_applicable",
            "top_down_legibility": "not_applicable"
          },
          {
            "number": 35,
            "label": "Living window forced open state",
            "category": "opening",
            "position_hint": "at the small living-room window on the south wall",
            "base_layer_decision": "state_overlay_plot_cue",
            "render_role": "not_applicable",
            "top_down_legibility": "not_applicable"
          },
          {
            "number": 36,
            "label": "Overturned south dining chair",
            "category": "furniture",
            "position_hint": "floor immediately south of the dining table",
            "base_layer_decision": "state_overlay_transient_object",
            "render_role": "not_applicable",
            "top_down_legibility": "not_applicable"
          },
          {
            "number": 37,
            "label": "Scattered household goods pile",
            "category": "prop",
            "position_hint": "single concentrated pile on the living-room floor west of the dining table",
            "base_layer_decision": "state_overlay_transient_object",
            "render_role": "not_applicable",
            "top_down_legibility": "not_applicable"
          },
          {
            "number": 38,
            "label": "Intruder footprint run",
            "category": "prop",
            "position_hint": "continuous floor run from the entrance threshold into the living area",
            "base_layer_decision": "state_overlay_plot_cue",
            "render_role": "not_applicable",
            "top_down_legibility": "not_applicable"
          },
          {
            "number": 39,
            "label": "Bloody old photograph pinned to wall",
            "category": "prop",
            "position_hint": "center of the red wall circle above the secondary bed",
            "base_layer_decision": "state_overlay_transient_object",
            "render_role": "not_applicable",
            "top_down_legibility": "not_applicable"
          }
        ],
        "target_unit_marker_numbers": [
          2,
          6
        ],
        "dominant_target_unit_marker_number": null,
        "clean_background_expected": false,
        "diagnostics": [
          "multiple base_structural_unit markers in use_numbered_elements ([2, 6]); dominant_target_unit_marker_number left empty (W19B-1 lock — no lexical disambiguation)"
        ]
      },
      "L05B04": {
        "bg_id": "L05B04",
        "fp_id": "fp_l05_rooftop_room_interior",
        "use_numbered_elements": [
          1,
          2,
          3,
          7,
          9,
          11,
          13,
          14,
          18,
          19,
          20,
          21,
          35,
          36,
          37,
          38
        ],
        "ignore_numbered_elements": [
          25,
          26,
          27,
          28,
          29,
          30,
          31,
          32,
          33,
          34
        ],
        "base_markers_to_reference": [
          {
            "number": 1,
            "label": "Entrance threshold area",
            "category": "area",
            "position_hint": "southwest edge of the dwelling, immediately inside the exterior entrance",
            "base_layer_decision": "base_structural_unit",
            "render_role": "not_applicable",
            "top_down_legibility": "not_applicable"
          },
          {
            "number": 2,
            "label": "Shared living and dining area",
            "category": "area",
            "position_hint": "central and southern portion of the compact interior",
            "base_layer_decision": "base_structural_unit",
            "render_role": "not_applicable",
            "top_down_legibility": "not_applicable"
          },
          {
            "number": 3,
            "label": "Kitchenette service area",
            "category": "area",
            "position_hint": "west wall of the living area, close to the entrance",
            "base_layer_decision": "base_structural_unit",
            "render_role": "not_applicable",
            "top_down_legibility": "not_applicable"
          },
          {
            "number": 7,
            "label": "Exterior iron entrance door",
            "category": "opening",
            "position_hint": "southwest exterior wall, opening inward to the threshold",
            "base_layer_decision": "base_opening",
            "render_role": "not_applicable",
            "top_down_legibility": "not_applicable"
          },
          {
            "number": 9,
            "label": "Secondary bedroom door",
            "category": "opening",
            "position_hint": "east side of the living area, opening into the secondary bedroom",
            "base_layer_decision": "base_opening",
            "render_role": "not_applicable",
            "top_down_legibility": "not_applicable"
          },
          {
            "number": 11,
            "label": "Small living-room window",
            "category": "opening",
            "position_hint": "south wall of the shared living area, east of the entrance",
            "base_layer_decision": "base_opening",
            "render_role": "not_applicable",
            "top_down_legibility": "not_applicable"
          },
          {
            "number": 13,
            "label": "Kitchen sink and faucet",
            "category": "furniture",
            "position_hint": "west wall of the kitchenette, near the entrance end of the counter",
            "base_layer_decision": "base_persistent_fixture",
            "render_role": "not_applicable",
            "top_down_legibility": "not_applicable"
          },
          {
            "number": 14,
            "label": "Compact stovetop",
            "category": "furniture",
            "position_hint": "west wall of the kitchenette, immediately north of the sink",
            "base_layer_decision": "base_persistent_fixture",
            "render_role": "not_applicable",
            "top_down_legibility": "not_applicable"
          },
          {
            "number": 18,
            "label": "Dining table",
            "category": "furniture",
            "position_hint": "center of the shared living and dining area",
            "base_layer_decision": "base_persistent_furniture",
            "render_role": "not_applicable",
            "top_down_legibility": "not_applicable"
          },
          {
            "number": 19,
            "label": "South dining chair",
            "category": "furniture",
            "position_hint": "south side of the dining table",
            "base_layer_decision": "base_persistent_furniture",
            "render_role": "not_applicable",
            "top_down_legibility": "not_applicable"
          },
          {
            "number": 20,
            "label": "North dining chair",
            "category": "furniture",
            "position_hint": "north side of the dining table",
            "base_layer_decision": "base_persistent_furniture",
            "render_role": "not_applicable",
            "top_down_legibility": "not_applicable"
          },
          {
            "number": 21,
            "label": "Television and low stand",
            "category": "furniture",
            "position_hint": "east wall of the living area, south of the secondary bedroom door",
            "base_layer_decision": "base_persistent_furniture",
            "render_role": "not_applicable",
            "top_down_legibility": "not_applicable"
          }
        ],
        "transient_markers_to_describe": [
          {
            "number": 35,
            "label": "Living window forced open state",
            "category": "opening",
            "position_hint": "at the small living-room window on the south wall",
            "base_layer_decision": "state_overlay_plot_cue",
            "render_role": "not_applicable",
            "top_down_legibility": "not_applicable"
          },
          {
            "number": 36,
            "label": "Overturned south dining chair",
            "category": "furniture",
            "position_hint": "floor immediately south of the dining table",
            "base_layer_decision": "state_overlay_transient_object",
            "render_role": "not_applicable",
            "top_down_legibility": "not_applicable"
          },
          {
            "number": 37,
            "label": "Scattered household goods pile",
            "category": "prop",
            "position_hint": "single concentrated pile on the living-room floor west of the dining table",
            "base_layer_decision": "state_overlay_transient_object",
            "render_role": "not_applicable",
            "top_down_legibility": "not_applicable"
          },
          {
            "number": 38,
            "label": "Intruder footprint run",
            "category": "prop",
            "position_hint": "continuous floor run from the entrance threshold into the living area",
            "base_layer_decision": "state_overlay_plot_cue",
            "render_role": "not_applicable",
            "top_down_legibility": "not_applicable"
          }
        ],
        "ignored_state_overlay_markers": [
          {
            "number": 25,
            "label": "Blood-soaked body behind curtain",
            "category": "prop",
            "position_hint": "floor at the northeast corner of the secondary bedroom, directly behind the curtain",
            "base_layer_decision": "state_overlay_transient_object",
            "render_role": "not_applicable",
            "top_down_legibility": "not_applicable"
          },
          {
            "number": 26,
            "label": "Bloody shoulder wounds",
            "category": "prop",
            "position_hint": "shoulder area of the body behind the secondary bedroom curtain",
            "base_layer_decision": "state_overlay_plot_cue",
            "render_role": "not_applicable",
            "top_down_legibility": "not_applicable"
          },
          {
            "number": 27,
            "label": "Red wrist mark",
            "category": "prop",
            "position_hint": "wrist of the body behind the secondary bedroom curtain",
            "base_layer_decision": "state_overlay_plot_cue",
            "render_role": "not_applicable",
            "top_down_legibility": "not_applicable"
          },
          {
            "number": 28,
            "label": "Blood pool beside body",
            "category": "prop",
            "position_hint": "single contiguous floor area beneath and immediately beside the body",
            "base_layer_decision": "state_overlay_plot_cue",
            "render_role": "not_applicable",
            "top_down_legibility": "not_applicable"
          },
          {
            "number": 29,
            "label": "Bloody footprint run",
            "category": "prop",
            "position_hint": "continuous floor run from the secondary bedroom doorway toward the curtain",
            "base_layer_decision": "state_overlay_plot_cue",
            "render_role": "not_applicable",
            "top_down_legibility": "not_applicable"
          },
          {
            "number": 30,
            "label": "Upright teacup",
            "category": "prop",
            "position_hint": "northwest portion of the dining tabletop",
            "base_layer_decision": "state_overlay_transient_object",
            "render_role": "not_applicable",
            "top_down_legibility": "not_applicable"
          },
          {
            "number": 31,
            "label": "Overturned teacup",
            "category": "prop",
            "position_hint": "southeast edge of the dining tabletop",
            "base_layer_decision": "state_overlay_transient_object",
            "render_role": "not_applicable",
            "top_down_legibility": "not_applicable"
          },
          {
            "number": 32,
            "label": "Red wall circle above secondary bed",
            "category": "prop",
            "position_hint": "north wall of the secondary bedroom, centered above the bed",
            "base_layer_decision": "state_overlay_plot_cue",
            "render_role": "not_applicable",
            "top_down_legibility": "not_applicable"
          },
          {
            "number": 33,
            "label": "Hallucinated bathroom wall circle",
            "category": "prop",
            "position_hint": "northwest bathroom wall beside the mirror",
            "base_layer_decision": "state_overlay_plot_cue",
            "render_role": "not_applicable",
            "top_down_legibility": "not_applicable"
          },
          {
            "number": 34,
            "label": "Hallucinated melting family photograph",
            "category": "prop",
            "position_hint": "single framed photograph position on the dining table",
            "base_layer_decision": "state_overlay_plot_cue",
            "render_role": "not_applicable",
            "top_down_legibility": "not_applicable"
          }
        ],
        "target_unit_marker_numbers": [
          1,
          2,
          3
        ],
        "dominant_target_unit_marker_number": null,
        "clean_background_expected": false,
        "diagnostics": [
          "multiple base_structural_unit markers in use_numbered_elements ([1, 2, 3]); dominant_target_unit_marker_number left empty (W19B-1 lock — no lexical disambiguation)"
        ]
      },
      "L05B03": {
        "bg_id": "L05B03",
        "fp_id": "fp_l05_rooftop_room_interior",
        "use_numbered_elements": [
          5,
          9,
          12,
          23,
          24,
          32,
          39
        ],
        "ignore_numbered_elements": [
          25,
          26,
          27,
          28,
          29,
          30,
          31,
          33,
          34,
          35,
          36,
          37,
          38
        ],
        "base_markers_to_reference": [
          {
            "number": 5,
            "label": "Secondary bedroom area",
            "category": "area",
            "position_hint": "east side of the dwelling",
            "base_layer_decision": "base_structural_unit",
            "render_role": "not_applicable",
            "top_down_legibility": "not_applicable"
          },
          {
            "number": 9,
            "label": "Secondary bedroom door",
            "category": "opening",
            "position_hint": "east side of the living area, opening into the secondary bedroom",
            "base_layer_decision": "base_opening",
            "render_role": "not_applicable",
            "top_down_legibility": "not_applicable"
          },
          {
            "number": 12,
            "label": "Secondary bedroom window",
            "category": "opening",
            "position_hint": "east exterior wall of the secondary bedroom",
            "base_layer_decision": "base_opening",
            "render_role": "not_applicable",
            "top_down_legibility": "not_applicable"
          },
          {
            "number": 23,
            "label": "Secondary bedroom bed",
            "category": "furniture",
            "position_hint": "north wall of the secondary bedroom, close to the east window",
            "base_layer_decision": "base_persistent_furniture",
            "render_role": "not_applicable",
            "top_down_legibility": "not_applicable"
          },
          {
            "number": 24,
            "label": "Secondary bedroom window curtain",
            "category": "furniture",
            "position_hint": "inside the east wall of the secondary bedroom, covering the window",
            "base_layer_decision": "base_persistent_furniture",
            "render_role": "not_applicable",
            "top_down_legibility": "not_applicable"
          }
        ],
        "transient_markers_to_describe": [
          {
            "number": 32,
            "label": "Red wall circle above secondary bed",
            "category": "prop",
            "position_hint": "north wall of the secondary bedroom, centered above the bed",
            "base_layer_decision": "state_overlay_plot_cue",
            "render_role": "not_applicable",
            "top_down_legibility": "not_applicable"
          },
          {
            "number": 39,
            "label": "Bloody old photograph pinned to wall",
            "category": "prop",
            "position_hint": "center of the red wall circle above the secondary bed",
            "base_layer_decision": "state_overlay_transient_object",
            "render_role": "not_applicable",
            "top_down_legibility": "not_applicable"
          }
        ],
        "ignored_state_overlay_markers": [
          {
            "number": 25,
            "label": "Blood-soaked body behind curtain",
            "category": "prop",
            "position_hint": "floor at the northeast corner of the secondary bedroom, directly behind the curtain",
            "base_layer_decision": "state_overlay_transient_object",
            "render_role": "not_applicable",
            "top_down_legibility": "not_applicable"
          },
          {
            "number": 26,
            "label": "Bloody shoulder wounds",
            "category": "prop",
            "position_hint": "shoulder area of the body behind the secondary bedroom curtain",
            "base_layer_decision": "state_overlay_plot_cue",
            "render_role": "not_applicable",
            "top_down_legibility": "not_applicable"
          },
          {
            "number": 27,
            "label": "Red wrist mark",
            "category": "prop",
            "position_hint": "wrist of the body behind the secondary bedroom curtain",
            "base_layer_decision": "state_overlay_plot_cue",
            "render_role": "not_applicable",
            "top_down_legibility": "not_applicable"
          },
          {
            "number": 28,
            "label": "Blood pool beside body",
            "category": "prop",
            "position_hint": "single contiguous floor area beneath and immediately beside the body",
            "base_layer_decision": "state_overlay_plot_cue",
            "render_role": "not_applicable",
            "top_down_legibility": "not_applicable"
          },
          {
            "number": 29,
            "label": "Bloody footprint run",
            "category": "prop",
            "position_hint": "continuous floor run from the secondary bedroom doorway toward the curtain",
            "base_layer_decision": "state_overlay_plot_cue",
            "render_role": "not_applicable",
            "top_down_legibility": "not_applicable"
          },
          {
            "number": 30,
            "label": "Upright teacup",
            "category": "prop",
            "position_hint": "northwest portion of the dining tabletop",
            "base_layer_decision": "state_overlay_transient_object",
            "render_role": "not_applicable",
            "top_down_legibility": "not_applicable"
          },
          {
            "number": 31,
            "label": "Overturned teacup",
            "category": "prop",
            "position_hint": "southeast edge of the dining tabletop",
            "base_layer_decision": "state_overlay_transient_object",
            "render_role": "not_applicable",
            "top_down_legibility": "not_applicable"
          },
          {
            "number": 33,
            "label": "Hallucinated bathroom wall circle",
            "category": "prop",
            "position_hint": "northwest bathroom wall beside the mirror",
            "base_layer_decision": "state_overlay_plot_cue",
            "render_role": "not_applicable",
            "top_down_legibility": "not_applicable"
          },
          {
            "number": 34,
            "label": "Hallucinated melting family photograph",
            "category": "prop",
            "position_hint": "single framed photograph position on the dining table",
            "base_layer_decision": "state_overlay_plot_cue",
            "render_role": "not_applicable",
            "top_down_legibility": "not_applicable"
          },
          {
            "number": 35,
            "label": "Living window forced open state",
            "category": "opening",
            "position_hint": "at the small living-room window on the south wall",
            "base_layer_decision": "state_overlay_plot_cue",
            "render_role": "not_applicable",
            "top_down_legibility": "not_applicable"
          },
          {
            "number": 36,
            "label": "Overturned south dining chair",
            "category": "furniture",
            "position_hint": "floor immediately south of the dining table",
            "base_layer_decision": "state_overlay_transient_object",
            "render_role": "not_applicable",
            "top_down_legibility": "not_applicable"
          },
          {
            "number": 37,
            "label": "Scattered household goods pile",
            "category": "prop",
            "position_hint": "single concentrated pile on the living-room floor west of the dining table",
            "base_layer_decision": "state_overlay_transient_object",
            "render_role": "not_applicable",
            "top_down_legibility": "not_applicable"
          },
          {
            "number": 38,
            "label": "Intruder footprint run",
            "category": "prop",
            "position_hint": "continuous floor run from the entrance threshold into the living area",
            "base_layer_decision": "state_overlay_plot_cue",
            "render_role": "not_applicable",
            "top_down_legibility": "not_applicable"
          }
        ],
        "target_unit_marker_numbers": [
          5
        ],
        "dominant_target_unit_marker_number": 5,
        "clean_background_expected": false,
        "diagnostics": []
      },
      "L09B02": {
        "bg_id": "L09B02",
        "fp_id": "fp_l09_retail_store",
        "use_numbered_elements": [
          1,
          2,
          3,
          5,
          6,
          7,
          8,
          9,
          12,
          15,
          16,
          18,
          19
        ],
        "ignore_numbered_elements": [],
        "base_markers_to_reference": [
          {
            "number": 1,
            "label": "shared sales floor",
            "category": "area",
            "position_hint": "center of the main retail floor",
            "base_layer_decision": "base_structural_unit",
            "render_role": "not_applicable",
            "top_down_legibility": "not_applicable"
          },
          {
            "number": 2,
            "label": "entrance vestibule",
            "category": "area",
            "position_hint": "south center between the exterior apron and sales floor",
            "base_layer_decision": "base_structural_unit",
            "render_role": "not_applicable",
            "top_down_legibility": "not_applicable"
          },
          {
            "number": 3,
            "label": "checkout and service zone",
            "category": "area",
            "position_hint": "southwest side of the sales floor beside the vestibule",
            "base_layer_decision": "base_structural_unit",
            "render_role": "not_applicable",
            "top_down_legibility": "not_applicable"
          },
          {
            "number": 5,
            "label": "exterior entrance apron",
            "category": "area",
            "position_hint": "outside the south facade directly before the vestibule",
            "base_layer_decision": "base_structural_unit",
            "render_role": "not_applicable",
            "top_down_legibility": "not_applicable"
          },
          {
            "number": 6,
            "label": "outer sliding entrance",
            "category": "opening",
            "position_hint": "south wall of the entrance vestibule",
            "base_layer_decision": "base_opening",
            "render_role": "not_applicable",
            "top_down_legibility": "not_applicable"
          },
          {
            "number": 7,
            "label": "inner sliding entrance",
            "category": "opening",
            "position_hint": "north wall of the entrance vestibule opening to the sales floor",
            "base_layer_decision": "base_opening",
            "render_role": "not_applicable",
            "top_down_legibility": "not_applicable"
          },
          {
            "number": 8,
            "label": "west shelf run",
            "category": "furniture",
            "position_hint": "western side of the main sales floor, oriented north to south",
            "base_layer_decision": "base_persistent_furniture",
            "render_role": "not_applicable",
            "top_down_legibility": "not_applicable"
          },
          {
            "number": 9,
            "label": "center-west shelf run",
            "category": "furniture",
            "position_hint": "left of the central circulation lane, oriented north to south",
            "base_layer_decision": "base_persistent_furniture",
            "render_role": "not_applicable",
            "top_down_legibility": "not_applicable"
          },
          {
            "number": 12,
            "label": "produce display island",
            "category": "furniture",
            "position_hint": "south-central sales floor beyond the checkout zone",
            "base_layer_decision": "base_persistent_furniture",
            "render_role": "not_applicable",
            "top_down_legibility": "not_applicable"
          },
          {
            "number": 15,
            "label": "checkout counter",
            "category": "furniture",
            "position_hint": "southwest sales floor, aligned beside the exit circulation",
            "base_layer_decision": "base_persistent_fixture",
            "render_role": "not_applicable",
            "top_down_legibility": "not_applicable"
          },
          {
            "number": 16,
            "label": "customer service desk",
            "category": "furniture",
            "position_hint": "west side of the vestibule-facing checkout zone",
            "base_layer_decision": "base_persistent_fixture",
            "render_role": "not_applicable",
            "top_down_legibility": "not_applicable"
          },
          {
            "number": 18,
            "label": "entrance surveillance camera",
            "category": "prop",
            "position_hint": "south facade corner overlooking the entrance apron",
            "base_layer_decision": "base_persistent_fixture",
            "render_role": "not_applicable",
            "top_down_legibility": "not_applicable"
          }
        ],
        "transient_markers_to_describe": [
          {
            "number": 19,
            "label": "stocking carton",
            "category": "prop",
            "position_hint": "temporarily beside the west shelf run during dusk operation",
            "base_layer_decision": "state_overlay_transient_object",
            "render_role": "not_applicable",
            "top_down_legibility": "not_applicable"
          }
        ],
        "ignored_state_overlay_markers": [],
        "target_unit_marker_numbers": [
          1,
          2,
          3,
          5
        ],
        "dominant_target_unit_marker_number": null,
        "clean_background_expected": false,
        "diagnostics": [
          "multiple base_structural_unit markers in use_numbered_elements ([1, 2, 3, 5]); dominant_target_unit_marker_number left empty (W19B-1 lock — no lexical disambiguation)"
        ]
      },
      "L09B04": {
        "bg_id": "L09B04",
        "fp_id": "fp_l09_retail_store",
        "use_numbered_elements": [
          1,
          4,
          8,
          9,
          10,
          11,
          12,
          13,
          14,
          17
        ],
        "ignore_numbered_elements": [
          19
        ],
        "base_markers_to_reference": [
          {
            "number": 1,
            "label": "shared sales floor",
            "category": "area",
            "position_hint": "center of the main retail floor",
            "base_layer_decision": "base_structural_unit",
            "render_role": "not_applicable",
            "top_down_legibility": "not_applicable"
          },
          {
            "number": 4,
            "label": "staff service strip",
            "category": "area",
            "position_hint": "northeast rear edge of the sales floor",
            "base_layer_decision": "base_structural_unit",
            "render_role": "not_applicable",
            "top_down_legibility": "not_applicable"
          },
          {
            "number": 8,
            "label": "west shelf run",
            "category": "furniture",
            "position_hint": "western side of the main sales floor, oriented north to south",
            "base_layer_decision": "base_persistent_furniture",
            "render_role": "not_applicable",
            "top_down_legibility": "not_applicable"
          },
          {
            "number": 9,
            "label": "center-west shelf run",
            "category": "furniture",
            "position_hint": "left of the central circulation lane, oriented north to south",
            "base_layer_decision": "base_persistent_furniture",
            "render_role": "not_applicable",
            "top_down_legibility": "not_applicable"
          },
          {
            "number": 10,
            "label": "center-east shelf run",
            "category": "furniture",
            "position_hint": "right of the central circulation lane, oriented north to south",
            "base_layer_decision": "base_persistent_furniture",
            "render_role": "not_applicable",
            "top_down_legibility": "not_applicable"
          },
          {
            "number": 11,
            "label": "east shelf run",
            "category": "furniture",
            "position_hint": "eastern side of the main sales floor, oriented north to south",
            "base_layer_decision": "base_persistent_furniture",
            "render_role": "not_applicable",
            "top_down_legibility": "not_applicable"
          },
          {
            "number": 12,
            "label": "produce display island",
            "category": "furniture",
            "position_hint": "south-central sales floor beyond the checkout zone",
            "base_layer_decision": "base_persistent_furniture",
            "render_role": "not_applicable",
            "top_down_legibility": "not_applicable"
          },
          {
            "number": 13,
            "label": "refrigerated wall case",
            "category": "furniture",
            "position_hint": "single contiguous run along the north wall",
            "base_layer_decision": "base_persistent_fixture",
            "render_role": "not_applicable",
            "top_down_legibility": "not_applicable"
          },
          {
            "number": 14,
            "label": "freezer wall case",
            "category": "furniture",
            "position_hint": "single contiguous run along the east wall",
            "base_layer_decision": "base_persistent_fixture",
            "render_role": "not_applicable",
            "top_down_legibility": "not_applicable"
          },
          {
            "number": 17,
            "label": "staff access door",
            "category": "opening",
            "position_hint": "north wall at the staff service strip",
            "base_layer_decision": "base_opening",
            "render_role": "not_applicable",
            "top_down_legibility": "not_applicable"
          }
        ],
        "transient_markers_to_describe": [],
        "ignored_state_overlay_markers": [
          {
            "number": 19,
            "label": "stocking carton",
            "category": "prop",
            "position_hint": "temporarily beside the west shelf run during dusk operation",
            "base_layer_decision": "state_overlay_transient_object",
            "render_role": "not_applicable",
            "top_down_legibility": "not_applicable"
          }
        ],
        "target_unit_marker_numbers": [
          1,
          4
        ],
        "dominant_target_unit_marker_number": null,
        "clean_background_expected": true,
        "diagnostics": [
          "multiple base_structural_unit markers in use_numbered_elements ([1, 4]); dominant_target_unit_marker_number left empty (W19B-1 lock — no lexical disambiguation)"
        ]
      },
      "L13B01": {
        "bg_id": "L13B01",
        "fp_id": "fp_l13_admin_cctv_room",
        "use_numbered_elements": [
          1,
          2,
          3,
          4,
          5,
          6,
          7,
          8,
          9,
          10
        ],
        "ignore_numbered_elements": [],
        "base_markers_to_reference": [
          {
            "number": 1,
            "label": "administration review zone",
            "category": "area",
            "position_hint": "west and central portion of the room around the visitor seating",
            "base_layer_decision": "base_structural_unit",
            "render_role": "not_applicable",
            "top_down_legibility": "not_applicable"
          },
          {
            "number": 2,
            "label": "CCTV workstation zone",
            "category": "area",
            "position_hint": "along the north wall around the surveillance workstation",
            "base_layer_decision": "base_structural_unit",
            "render_role": "not_applicable",
            "top_down_legibility": "not_applicable"
          },
          {
            "number": 3,
            "label": "threshold access zone",
            "category": "area",
            "position_hint": "south side of the room between the entrance and workstation",
            "base_layer_decision": "base_structural_unit",
            "render_role": "not_applicable",
            "top_down_legibility": "not_applicable"
          },
          {
            "number": 4,
            "label": "corridor entrance door",
            "category": "opening",
            "position_hint": "south wall near the southwest corner, swinging inward",
            "base_layer_decision": "base_opening",
            "render_role": "not_applicable",
            "top_down_legibility": "not_applicable"
          },
          {
            "number": 5,
            "label": "CCTV workstation desk",
            "category": "furniture",
            "position_hint": "centered against the north wall",
            "base_layer_decision": "base_persistent_furniture",
            "render_role": "not_applicable",
            "top_down_legibility": "not_applicable"
          },
          {
            "number": 6,
            "label": "CCTV review monitor",
            "category": "prop",
            "position_hint": "on the north edge of the workstation desk",
            "base_layer_decision": "base_persistent_fixture",
            "render_role": "not_applicable",
            "top_down_legibility": "not_applicable"
          },
          {
            "number": 7,
            "label": "operator chair",
            "category": "furniture",
            "position_hint": "immediately south of the workstation desk",
            "base_layer_decision": "base_persistent_furniture",
            "render_role": "not_applicable",
            "top_down_legibility": "not_applicable"
          },
          {
            "number": 8,
            "label": "visitor chair one",
            "category": "furniture",
            "position_hint": "southwest of the operator chair, facing the monitor",
            "base_layer_decision": "base_persistent_furniture",
            "render_role": "not_applicable",
            "top_down_legibility": "not_applicable"
          },
          {
            "number": 9,
            "label": "visitor chair two",
            "category": "furniture",
            "position_hint": "southeast of the operator chair, facing the monitor",
            "base_layer_decision": "base_persistent_furniture",
            "render_role": "not_applicable",
            "top_down_legibility": "not_applicable"
          }
        ],
        "transient_markers_to_describe": [
          {
            "number": 10,
            "label": "unusually dark CCTV footage",
            "category": "prop",
            "position_hint": "confined to the display surface of the CCTV review monitor",
            "base_layer_decision": "state_overlay_plot_cue",
            "render_role": "not_applicable",
            "top_down_legibility": "not_applicable"
          }
        ],
        "ignored_state_overlay_markers": [],
        "target_unit_marker_numbers": [
          1,
          2,
          3
        ],
        "dominant_target_unit_marker_number": null,
        "clean_background_expected": false,
        "diagnostics": [
          "multiple base_structural_unit markers in use_numbered_elements ([1, 2, 3]); dominant_target_unit_marker_number left empty (W19B-1 lock — no lexical disambiguation)"
        ]
      },
      "L12B03": {
        "bg_id": "L12B03",
        "fp_id": "fp_l12_police_office",
        "use_numbered_elements": [
          1,
          2,
          3,
          4,
          5,
          6,
          7,
          8,
          9,
          10,
          11,
          12,
          13
        ],
        "ignore_numbered_elements": [
          14,
          15
        ],
        "base_markers_to_reference": [
          {
            "number": 1,
            "label": "shared work zone",
            "category": "area",
            "position_hint": "main rectangular office area surrounding the desks",
            "base_layer_decision": "base_structural_unit",
            "render_role": "not_applicable",
            "top_down_legibility": "not_applicable"
          },
          {
            "number": 2,
            "label": "entry threshold zone",
            "category": "area",
            "position_hint": "south side immediately inside the corridor door",
            "base_layer_decision": "base_structural_unit",
            "render_role": "not_applicable",
            "top_down_legibility": "not_applicable"
          },
          {
            "number": 3,
            "label": "central circulation aisle",
            "category": "area",
            "position_hint": "straight path running south to north between the desk groups",
            "base_layer_decision": "base_structural_unit",
            "render_role": "not_applicable",
            "top_down_legibility": "not_applicable"
          },
          {
            "number": 4,
            "label": "coffee service zone",
            "category": "area",
            "position_hint": "southeast corner beside the entry threshold",
            "base_layer_decision": "base_structural_unit",
            "render_role": "not_applicable",
            "top_down_legibility": "not_applicable"
          },
          {
            "number": 5,
            "label": "corridor entry door",
            "category": "opening",
            "position_hint": "south wall near the southeast side, opening inward toward the threshold",
            "base_layer_decision": "base_opening",
            "render_role": "not_applicable",
            "top_down_legibility": "not_applicable"
          },
          {
            "number": 6,
            "label": "primary detective desk",
            "category": "furniture",
            "position_hint": "west side of the central aisle, oriented toward the aisle",
            "base_layer_decision": "base_persistent_furniture",
            "render_role": "not_applicable",
            "top_down_legibility": "not_applicable"
          },
          {
            "number": 7,
            "label": "duty detective desk",
            "category": "furniture",
            "position_hint": "east side of the central aisle, opposite the primary detective desk",
            "base_layer_decision": "base_persistent_furniture",
            "render_role": "not_applicable",
            "top_down_legibility": "not_applicable"
          },
          {
            "number": 8,
            "label": "primary desktop monitor",
            "category": "prop",
            "position_hint": "north edge of the primary detective desk",
            "base_layer_decision": "base_persistent_fixture",
            "render_role": "not_applicable",
            "top_down_legibility": "not_applicable"
          },
          {
            "number": 9,
            "label": "duty desktop monitor",
            "category": "prop",
            "position_hint": "north edge of the duty detective desk",
            "base_layer_decision": "base_persistent_fixture",
            "render_role": "not_applicable",
            "top_down_legibility": "not_applicable"
          },
          {
            "number": 10,
            "label": "shared workstation bench",
            "category": "furniture",
            "position_hint": "northwest portion of the shared work zone, behind the primary desk",
            "base_layer_decision": "base_persistent_furniture",
            "render_role": "not_applicable",
            "top_down_legibility": "not_applicable"
          },
          {
            "number": 11,
            "label": "filing cabinet",
            "category": "furniture",
            "position_hint": "west wall near the northwest corner",
            "base_layer_decision": "base_persistent_furniture",
            "render_role": "not_applicable",
            "top_down_legibility": "not_applicable"
          },
          {
            "number": 12,
            "label": "coffee machine counter",
            "category": "prop",
            "position_hint": "southeast coffee service zone against the east wall",
            "base_layer_decision": "base_persistent_fixture",
            "render_role": "not_applicable",
            "top_down_legibility": "not_applicable"
          },
          {
            "number": 13,
            "label": "north window run",
            "category": "opening",
            "position_hint": "single contiguous double-line opening centered on the north wall",
            "base_layer_decision": "base_opening",
            "render_role": "not_applicable",
            "top_down_legibility": "not_applicable"
          }
        ],
        "transient_markers_to_describe": [],
        "ignored_state_overlay_markers": [
          {
            "number": 14,
            "label": "spread case photographs",
            "category": "prop",
            "position_hint": "single contiguous spread across the top of the primary detective desk",
            "base_layer_decision": "state_overlay_transient_object",
            "render_role": "not_applicable",
            "top_down_legibility": "not_applicable"
          },
          {
            "number": 15,
            "label": "GPS evidence display",
            "category": "prop",
            "position_hint": "contained entirely within the duty desktop monitor screen",
            "base_layer_decision": "state_overlay_plot_cue",
            "render_role": "not_applicable",
            "top_down_legibility": "not_applicable"
          }
        ],
        "target_unit_marker_numbers": [
          1,
          2,
          3,
          4
        ],
        "dominant_target_unit_marker_number": null,
        "clean_background_expected": true,
        "diagnostics": [
          "multiple base_structural_unit markers in use_numbered_elements ([1, 2, 3, 4]); dominant_target_unit_marker_number left empty (W19B-1 lock — no lexical disambiguation)"
        ]
      },
      "L12B02": {
        "bg_id": "L12B02",
        "fp_id": "fp_l12_police_office",
        "use_numbered_elements": [
          1,
          2,
          3,
          4,
          5,
          6,
          7,
          8,
          9,
          10,
          11,
          12,
          13,
          14,
          15
        ],
        "ignore_numbered_elements": [],
        "base_markers_to_reference": [
          {
            "number": 1,
            "label": "shared work zone",
            "category": "area",
            "position_hint": "main rectangular office area surrounding the desks",
            "base_layer_decision": "base_structural_unit",
            "render_role": "not_applicable",
            "top_down_legibility": "not_applicable"
          },
          {
            "number": 2,
            "label": "entry threshold zone",
            "category": "area",
            "position_hint": "south side immediately inside the corridor door",
            "base_layer_decision": "base_structural_unit",
            "render_role": "not_applicable",
            "top_down_legibility": "not_applicable"
          },
          {
            "number": 3,
            "label": "central circulation aisle",
            "category": "area",
            "position_hint": "straight path running south to north between the desk groups",
            "base_layer_decision": "base_structural_unit",
            "render_role": "not_applicable",
            "top_down_legibility": "not_applicable"
          },
          {
            "number": 4,
            "label": "coffee service zone",
            "category": "area",
            "position_hint": "southeast corner beside the entry threshold",
            "base_layer_decision": "base_structural_unit",
            "render_role": "not_applicable",
            "top_down_legibility": "not_applicable"
          },
          {
            "number": 5,
            "label": "corridor entry door",
            "category": "opening",
            "position_hint": "south wall near the southeast side, opening inward toward the threshold",
            "base_layer_decision": "base_opening",
            "render_role": "not_applicable",
            "top_down_legibility": "not_applicable"
          },
          {
            "number": 6,
            "label": "primary detective desk",
            "category": "furniture",
            "position_hint": "west side of the central aisle, oriented toward the aisle",
            "base_layer_decision": "base_persistent_furniture",
            "render_role": "not_applicable",
            "top_down_legibility": "not_applicable"
          },
          {
            "number": 7,
            "label": "duty detective desk",
            "category": "furniture",
            "position_hint": "east side of the central aisle, opposite the primary detective desk",
            "base_layer_decision": "base_persistent_furniture",
            "render_role": "not_applicable",
            "top_down_legibility": "not_applicable"
          },
          {
            "number": 8,
            "label": "primary desktop monitor",
            "category": "prop",
            "position_hint": "north edge of the primary detective desk",
            "base_layer_decision": "base_persistent_fixture",
            "render_role": "not_applicable",
            "top_down_legibility": "not_applicable"
          },
          {
            "number": 9,
            "label": "duty desktop monitor",
            "category": "prop",
            "position_hint": "north edge of the duty detective desk",
            "base_layer_decision": "base_persistent_fixture",
            "render_role": "not_applicable",
            "top_down_legibility": "not_applicable"
          },
          {
            "number": 10,
            "label": "shared workstation bench",
            "category": "furniture",
            "position_hint": "northwest portion of the shared work zone, behind the primary desk",
            "base_layer_decision": "base_persistent_furniture",
            "render_role": "not_applicable",
            "top_down_legibility": "not_applicable"
          },
          {
            "number": 11,
            "label": "filing cabinet",
            "category": "furniture",
            "position_hint": "west wall near the northwest corner",
            "base_layer_decision": "base_persistent_furniture",
            "render_role": "not_applicable",
            "top_down_legibility": "not_applicable"
          },
          {
            "number": 12,
            "label": "coffee machine counter",
            "category": "prop",
            "position_hint": "southeast coffee service zone against the east wall",
            "base_layer_decision": "base_persistent_fixture",
            "render_role": "not_applicable",
            "top_down_legibility": "not_applicable"
          },
          {
            "number": 13,
            "label": "north window run",
            "category": "opening",
            "position_hint": "single contiguous double-line opening centered on the north wall",
            "base_layer_decision": "base_opening",
            "render_role": "not_applicable",
            "top_down_legibility": "not_applicable"
          }
        ],
        "transient_markers_to_describe": [
          {
            "number": 14,
            "label": "spread case photographs",
            "category": "prop",
            "position_hint": "single contiguous spread across the top of the primary detective desk",
            "base_layer_decision": "state_overlay_transient_object",
            "render_role": "not_applicable",
            "top_down_legibility": "not_applicable"
          },
          {
            "number": 15,
            "label": "GPS evidence display",
            "category": "prop",
            "position_hint": "contained entirely within the duty desktop monitor screen",
            "base_layer_decision": "state_overlay_plot_cue",
            "render_role": "not_applicable",
            "top_down_legibility": "not_applicable"
          }
        ],
        "ignored_state_overlay_markers": [],
        "target_unit_marker_numbers": [
          1,
          2,
          3,
          4
        ],
        "dominant_target_unit_marker_number": null,
        "clean_background_expected": false,
        "diagnostics": [
          "multiple base_structural_unit markers in use_numbered_elements ([1, 2, 3, 4]); dominant_target_unit_marker_number left empty (W19B-1 lock — no lexical disambiguation)"
        ]
      },
      "L18B01": {
        "bg_id": "L18B01",
        "fp_id": "fp_open_sea",
        "use_numbered_elements": [
          1,
          2,
          3,
          4,
          5
        ],
        "ignore_numbered_elements": [],
        "base_markers_to_reference": [
          {
            "number": 1,
            "label": "Clear sea zone",
            "category": "area",
            "position_hint": "western and southwestern half of the staging surface",
            "base_layer_decision": "base_structural_unit",
            "render_role": "not_applicable",
            "top_down_legibility": "not_applicable"
          },
          {
            "number": 2,
            "label": "Fog threshold zone",
            "category": "area",
            "position_hint": "narrow irregular north-south band near the center of the staging surface",
            "base_layer_decision": "base_structural_unit",
            "render_role": "not_applicable",
            "top_down_legibility": "not_applicable"
          },
          {
            "number": 3,
            "label": "Dense fog zone",
            "category": "area",
            "position_hint": "eastern half beyond the fog threshold",
            "base_layer_decision": "base_structural_unit",
            "render_role": "not_applicable",
            "top_down_legibility": "not_applicable"
          }
        ],
        "transient_markers_to_describe": [
          {
            "number": 4,
            "label": "Small fishing boat",
            "category": "prop",
            "position_hint": "approach axis within the clear sea, immediately west of the fog threshold",
            "base_layer_decision": "state_overlay_transient_object",
            "render_role": "not_applicable",
            "top_down_legibility": "not_applicable"
          },
          {
            "number": 5,
            "label": "Golden dusk reflection",
            "category": "area",
            "position_hint": "elongated temporary reflection across the clear sea behind and beside the approaching boat",
            "base_layer_decision": "state_overlay_plot_cue",
            "render_role": "not_applicable",
            "top_down_legibility": "not_applicable"
          }
        ],
        "ignored_state_overlay_markers": [],
        "target_unit_marker_numbers": [
          1,
          2,
          3
        ],
        "dominant_target_unit_marker_number": null,
        "clean_background_expected": false,
        "diagnostics": [
          "multiple base_structural_unit markers in use_numbered_elements ([1, 2, 3]); dominant_target_unit_marker_number left empty (W19B-1 lock — no lexical disambiguation)"
        ]
      },
      "L19B03": {
        "bg_id": "L19B03",
        "fp_id": "fp_fishing_boat_deck",
        "use_numbered_elements": [
          1,
          2,
          3,
          4,
          5,
          6,
          9,
          10,
          11,
          14
        ],
        "ignore_numbered_elements": [
          15
        ],
        "base_markers_to_reference": [
          {
            "number": 1,
            "label": "bow deck zone",
            "category": "area",
            "position_hint": "tapered north end of the hull footprint",
            "base_layer_decision": "base_structural_unit",
            "render_role": "not_applicable",
            "top_down_legibility": "not_applicable"
          },
          {
            "number": 2,
            "label": "open working deck",
            "category": "area",
            "position_hint": "broad central-to-aft deck behind the wheelhouse",
            "base_layer_decision": "base_structural_unit",
            "render_role": "not_applicable",
            "top_down_legibility": "not_applicable"
          },
          {
            "number": 3,
            "label": "port side passage",
            "category": "area",
            "position_hint": "narrow exterior passage along the west side of the wheelhouse",
            "base_layer_decision": "base_structural_unit",
            "render_role": "not_applicable",
            "top_down_legibility": "not_applicable"
          },
          {
            "number": 4,
            "label": "starboard side passage",
            "category": "area",
            "position_hint": "narrow exterior passage along the east side of the wheelhouse",
            "base_layer_decision": "base_structural_unit",
            "render_role": "not_applicable",
            "top_down_legibility": "not_applicable"
          },
          {
            "number": 5,
            "label": "wheelhouse service zone",
            "category": "area",
            "position_hint": "enclosed forward-middle cabin between the bow and working deck",
            "base_layer_decision": "base_structural_unit",
            "render_role": "not_applicable",
            "top_down_legibility": "not_applicable"
          },
          {
            "number": 6,
            "label": "aft transom work zone",
            "category": "area",
            "position_hint": "southern end of the open deck against the transom",
            "base_layer_decision": "base_structural_unit",
            "render_role": "not_applicable",
            "top_down_legibility": "not_applicable"
          },
          {
            "number": 9,
            "label": "forward windshield run",
            "category": "opening",
            "position_hint": "single contiguous glazing run across the wheelhouse forward wall",
            "base_layer_decision": "base_opening",
            "render_role": "not_applicable",
            "top_down_legibility": "not_applicable"
          },
          {
            "number": 10,
            "label": "port wheelhouse window",
            "category": "opening",
            "position_hint": "single window in the west wall of the wheelhouse",
            "base_layer_decision": "base_opening",
            "render_role": "not_applicable",
            "top_down_legibility": "not_applicable"
          },
          {
            "number": 11,
            "label": "starboard wheelhouse window",
            "category": "opening",
            "position_hint": "single window in the east wall beside the helm",
            "base_layer_decision": "base_opening",
            "render_role": "not_applicable",
            "top_down_legibility": "not_applicable"
          },
          {
            "number": 14,
            "label": "roof antenna mast base",
            "category": "prop",
            "position_hint": "forward centerline of the wheelhouse roof footprint",
            "base_layer_decision": "base_persistent_fixture",
            "render_role": "not_applicable",
            "top_down_legibility": "not_applicable"
          }
        ],
        "transient_markers_to_describe": [],
        "ignored_state_overlay_markers": [
          {
            "number": 15,
            "label": "old handheld photograph",
            "category": "prop",
            "position_hint": "temporarily held by a person on the open working deck during the confrontation",
            "base_layer_decision": "state_overlay_transient_object",
            "render_role": "not_applicable",
            "top_down_legibility": "not_applicable"
          }
        ],
        "target_unit_marker_numbers": [
          1,
          2,
          3,
          4,
          5,
          6
        ],
        "dominant_target_unit_marker_number": null,
        "clean_background_expected": true,
        "diagnostics": [
          "multiple base_structural_unit markers in use_numbered_elements ([1, 2, 3, 4, 5, 6]); dominant_target_unit_marker_number left empty (W19B-1 lock — no lexical disambiguation)"
        ]
      },
      "L19B02": {
        "bg_id": "L19B02",
        "fp_id": "fp_fishing_boat_deck",
        "use_numbered_elements": [
          2,
          3,
          4,
          5,
          7,
          12,
          13,
          15
        ],
        "ignore_numbered_elements": [],
        "base_markers_to_reference": [
          {
            "number": 2,
            "label": "open working deck",
            "category": "area",
            "position_hint": "broad central-to-aft deck behind the wheelhouse",
            "base_layer_decision": "base_structural_unit",
            "render_role": "not_applicable",
            "top_down_legibility": "not_applicable"
          },
          {
            "number": 3,
            "label": "port side passage",
            "category": "area",
            "position_hint": "narrow exterior passage along the west side of the wheelhouse",
            "base_layer_decision": "base_structural_unit",
            "render_role": "not_applicable",
            "top_down_legibility": "not_applicable"
          },
          {
            "number": 4,
            "label": "starboard side passage",
            "category": "area",
            "position_hint": "narrow exterior passage along the east side of the wheelhouse",
            "base_layer_decision": "base_structural_unit",
            "render_role": "not_applicable",
            "top_down_legibility": "not_applicable"
          },
          {
            "number": 5,
            "label": "wheelhouse service zone",
            "category": "area",
            "position_hint": "enclosed forward-middle cabin between the bow and working deck",
            "base_layer_decision": "base_structural_unit",
            "render_role": "not_applicable",
            "top_down_legibility": "not_applicable"
          },
          {
            "number": 7,
            "label": "wheelhouse rear door",
            "category": "opening",
            "position_hint": "center of the wheelhouse aft wall, opening inward from the working deck",
            "base_layer_decision": "base_opening",
            "render_role": "not_applicable",
            "top_down_legibility": "not_applicable"
          },
          {
            "number": 12,
            "label": "deck box bench",
            "category": "furniture",
            "position_hint": "port side of the open working deck, clear of the wheelhouse doorway",
            "base_layer_decision": "base_persistent_furniture",
            "render_role": "not_applicable",
            "top_down_legibility": "not_applicable"
          },
          {
            "number": 13,
            "label": "flush engine access hatch",
            "category": "prop",
            "position_hint": "centerline of the aft half of the working deck",
            "base_layer_decision": "base_persistent_fixture",
            "render_role": "not_applicable",
            "top_down_legibility": "not_applicable"
          }
        ],
        "transient_markers_to_describe": [
          {
            "number": 15,
            "label": "old handheld photograph",
            "category": "prop",
            "position_hint": "temporarily held by a person on the open working deck during the confrontation",
            "base_layer_decision": "state_overlay_transient_object",
            "render_role": "not_applicable",
            "top_down_legibility": "not_applicable"
          }
        ],
        "ignored_state_overlay_markers": [],
        "target_unit_marker_numbers": [
          2,
          3,
          4,
          5
        ],
        "dominant_target_unit_marker_number": null,
        "clean_background_expected": false,
        "diagnostics": [
          "multiple base_structural_unit markers in use_numbered_elements ([2, 3, 4, 5]); dominant_target_unit_marker_number left empty (W19B-1 lock — no lexical disambiguation)"
        ]
      },
      "L19B01": {
        "bg_id": "L19B01",
        "fp_id": "fp_fishing_boat_deck",
        "use_numbered_elements": [
          5,
          7,
          8,
          9,
          10,
          11
        ],
        "ignore_numbered_elements": [
          15
        ],
        "base_markers_to_reference": [
          {
            "number": 5,
            "label": "wheelhouse service zone",
            "category": "area",
            "position_hint": "enclosed forward-middle cabin between the bow and working deck",
            "base_layer_decision": "base_structural_unit",
            "render_role": "not_applicable",
            "top_down_legibility": "not_applicable"
          },
          {
            "number": 7,
            "label": "wheelhouse rear door",
            "category": "opening",
            "position_hint": "center of the wheelhouse aft wall, opening inward from the working deck",
            "base_layer_decision": "base_opening",
            "render_role": "not_applicable",
            "top_down_legibility": "not_applicable"
          },
          {
            "number": 8,
            "label": "helm console and wheel",
            "category": "furniture",
            "position_hint": "forward starboard half of the wheelhouse, facing the bow",
            "base_layer_decision": "base_persistent_fixture",
            "render_role": "not_applicable",
            "top_down_legibility": "not_applicable"
          },
          {
            "number": 9,
            "label": "forward windshield run",
            "category": "opening",
            "position_hint": "single contiguous glazing run across the wheelhouse forward wall",
            "base_layer_decision": "base_opening",
            "render_role": "not_applicable",
            "top_down_legibility": "not_applicable"
          },
          {
            "number": 10,
            "label": "port wheelhouse window",
            "category": "opening",
            "position_hint": "single window in the west wall of the wheelhouse",
            "base_layer_decision": "base_opening",
            "render_role": "not_applicable",
            "top_down_legibility": "not_applicable"
          },
          {
            "number": 11,
            "label": "starboard wheelhouse window",
            "category": "opening",
            "position_hint": "single window in the east wall beside the helm",
            "base_layer_decision": "base_opening",
            "render_role": "not_applicable",
            "top_down_legibility": "not_applicable"
          }
        ],
        "transient_markers_to_describe": [],
        "ignored_state_overlay_markers": [
          {
            "number": 15,
            "label": "old handheld photograph",
            "category": "prop",
            "position_hint": "temporarily held by a person on the open working deck during the confrontation",
            "base_layer_decision": "state_overlay_transient_object",
            "render_role": "not_applicable",
            "top_down_legibility": "not_applicable"
          }
        ],
        "target_unit_marker_numbers": [
          5
        ],
        "dominant_target_unit_marker_number": 5,
        "clean_background_expected": true,
        "diagnostics": []
      },
      "L20B02": {
        "bg_id": "L20B02",
        "fp_id": "fp_wheelhouse_interior",
        "use_numbered_elements": [
          1,
          2,
          3,
          4,
          5,
          6,
          7,
          8,
          9,
          10,
          11,
          12,
          13,
          14
        ],
        "ignore_numbered_elements": [
          15
        ],
        "base_markers_to_reference": [
          {
            "number": 1,
            "label": "forward control zone",
            "category": "area",
            "position_hint": "forward third of the enclosed wheelhouse",
            "base_layer_decision": "base_structural_unit",
            "render_role": "not_applicable",
            "top_down_legibility": "not_applicable"
          },
          {
            "number": 2,
            "label": "central shared zone",
            "category": "area",
            "position_hint": "center of wheelhouse between helm and aft entry",
            "base_layer_decision": "base_structural_unit",
            "render_role": "not_applicable",
            "top_down_legibility": "not_applicable"
          },
          {
            "number": 3,
            "label": "aft threshold zone",
            "category": "area",
            "position_hint": "aft center immediately inside the entry",
            "base_layer_decision": "base_structural_unit",
            "render_role": "not_applicable",
            "top_down_legibility": "not_applicable"
          },
          {
            "number": 4,
            "label": "aft entry door",
            "category": "opening",
            "position_hint": "center of aft wall, opening into the threshold zone",
            "base_layer_decision": "base_opening",
            "render_role": "not_applicable",
            "top_down_legibility": "not_applicable"
          },
          {
            "number": 5,
            "label": "forward window run",
            "category": "opening",
            "position_hint": "single contiguous glazed run across the forward wall above the helm",
            "base_layer_decision": "base_opening",
            "render_role": "not_applicable",
            "top_down_legibility": "not_applicable"
          },
          {
            "number": 6,
            "label": "port side window run",
            "category": "opening",
            "position_hint": "single contiguous window run on the port wall beside the control zone",
            "base_layer_decision": "base_opening",
            "render_role": "not_applicable",
            "top_down_legibility": "not_applicable"
          },
          {
            "number": 7,
            "label": "starboard side window run",
            "category": "opening",
            "position_hint": "single contiguous window run on the starboard wall beside the control zone",
            "base_layer_decision": "base_opening",
            "render_role": "not_applicable",
            "top_down_legibility": "not_applicable"
          },
          {
            "number": 8,
            "label": "helm console",
            "category": "furniture",
            "position_hint": "forward center beneath the forward window run",
            "base_layer_decision": "base_persistent_fixture",
            "render_role": "not_applicable",
            "top_down_legibility": "not_applicable"
          },
          {
            "number": 9,
            "label": "fixed helm seat",
            "category": "furniture",
            "position_hint": "immediately aft of the helm console, slightly to starboard",
            "base_layer_decision": "base_persistent_furniture",
            "render_role": "not_applicable",
            "top_down_legibility": "not_applicable"
          },
          {
            "number": 10,
            "label": "port aft wall panel",
            "category": "area",
            "position_hint": "contiguous port wall surface between the side window and aft corner",
            "base_layer_decision": "base_structural_unit",
            "render_role": "not_applicable",
            "top_down_legibility": "not_applicable"
          },
          {
            "number": 11,
            "label": "starboard aft wall panel",
            "category": "area",
            "position_hint": "contiguous starboard wall surface between the side window and aft corner",
            "base_layer_decision": "base_structural_unit",
            "render_role": "not_applicable",
            "top_down_legibility": "not_applicable"
          }
        ],
        "transient_markers_to_describe": [
          {
            "number": 12,
            "label": "blood-stained photograph",
            "category": "prop",
            "position_hint": "held or displayed at one contiguous spot in the central shared zone",
            "base_layer_decision": "state_overlay_transient_object",
            "render_role": "not_applicable",
            "top_down_legibility": "not_applicable"
          },
          {
            "number": 13,
            "label": "port wall red-circle cluster",
            "category": "prop",
            "position_hint": "one contiguous cluster on the port aft wall panel at number 10",
            "base_layer_decision": "state_overlay_plot_cue",
            "render_role": "not_applicable",
            "top_down_legibility": "not_applicable"
          },
          {
            "number": 14,
            "label": "starboard wall red-circle cluster",
            "category": "prop",
            "position_hint": "one contiguous cluster on the starboard aft wall panel at number 11",
            "base_layer_decision": "state_overlay_plot_cue",
            "render_role": "not_applicable",
            "top_down_legibility": "not_applicable"
          }
        ],
        "ignored_state_overlay_markers": [
          {
            "number": 15,
            "label": "altered-consciousness distortion field",
            "category": "area",
            "position_hint": "subjective visual field centered over the central shared zone near the helm seat",
            "base_layer_decision": "state_overlay_plot_cue",
            "render_role": "not_applicable",
            "top_down_legibility": "not_applicable"
          }
        ],
        "target_unit_marker_numbers": [
          1,
          2,
          3,
          10,
          11
        ],
        "dominant_target_unit_marker_number": null,
        "clean_background_expected": false,
        "diagnostics": [
          "multiple base_structural_unit markers in use_numbered_elements ([1, 2, 3, 10, 11]); dominant_target_unit_marker_number left empty (W19B-1 lock — no lexical disambiguation)"
        ]
      },
      "L20B01": {
        "bg_id": "L20B01",
        "fp_id": "fp_wheelhouse_interior",
        "use_numbered_elements": [
          1,
          2,
          3,
          4,
          6,
          7,
          8,
          9,
          10,
          11,
          13,
          14,
          15
        ],
        "ignore_numbered_elements": [
          12
        ],
        "base_markers_to_reference": [
          {
            "number": 1,
            "label": "forward control zone",
            "category": "area",
            "position_hint": "forward third of the enclosed wheelhouse",
            "base_layer_decision": "base_structural_unit",
            "render_role": "not_applicable",
            "top_down_legibility": "not_applicable"
          },
          {
            "number": 2,
            "label": "central shared zone",
            "category": "area",
            "position_hint": "center of wheelhouse between helm and aft entry",
            "base_layer_decision": "base_structural_unit",
            "render_role": "not_applicable",
            "top_down_legibility": "not_applicable"
          },
          {
            "number": 3,
            "label": "aft threshold zone",
            "category": "area",
            "position_hint": "aft center immediately inside the entry",
            "base_layer_decision": "base_structural_unit",
            "render_role": "not_applicable",
            "top_down_legibility": "not_applicable"
          },
          {
            "number": 4,
            "label": "aft entry door",
            "category": "opening",
            "position_hint": "center of aft wall, opening into the threshold zone",
            "base_layer_decision": "base_opening",
            "render_role": "not_applicable",
            "top_down_legibility": "not_applicable"
          },
          {
            "number": 6,
            "label": "port side window run",
            "category": "opening",
            "position_hint": "single contiguous window run on the port wall beside the control zone",
            "base_layer_decision": "base_opening",
            "render_role": "not_applicable",
            "top_down_legibility": "not_applicable"
          },
          {
            "number": 7,
            "label": "starboard side window run",
            "category": "opening",
            "position_hint": "single contiguous window run on the starboard wall beside the control zone",
            "base_layer_decision": "base_opening",
            "render_role": "not_applicable",
            "top_down_legibility": "not_applicable"
          },
          {
            "number": 8,
            "label": "helm console",
            "category": "furniture",
            "position_hint": "forward center beneath the forward window run",
            "base_layer_decision": "base_persistent_fixture",
            "render_role": "not_applicable",
            "top_down_legibility": "not_applicable"
          },
          {
            "number": 9,
            "label": "fixed helm seat",
            "category": "furniture",
            "position_hint": "immediately aft of the helm console, slightly to starboard",
            "base_layer_decision": "base_persistent_furniture",
            "render_role": "not_applicable",
            "top_down_legibility": "not_applicable"
          },
          {
            "number": 10,
            "label": "port aft wall panel",
            "category": "area",
            "position_hint": "contiguous port wall surface between the side window and aft corner",
            "base_layer_decision": "base_structural_unit",
            "render_role": "not_applicable",
            "top_down_legibility": "not_applicable"
          },
          {
            "number": 11,
            "label": "starboard aft wall panel",
            "category": "area",
            "position_hint": "contiguous starboard wall surface between the side window and aft corner",
            "base_layer_decision": "base_structural_unit",
            "render_role": "not_applicable",
            "top_down_legibility": "not_applicable"
          }
        ],
        "transient_markers_to_describe": [
          {
            "number": 13,
            "label": "port wall red-circle cluster",
            "category": "prop",
            "position_hint": "one contiguous cluster on the port aft wall panel at number 10",
            "base_layer_decision": "state_overlay_plot_cue",
            "render_role": "not_applicable",
            "top_down_legibility": "not_applicable"
          },
          {
            "number": 14,
            "label": "starboard wall red-circle cluster",
            "category": "prop",
            "position_hint": "one contiguous cluster on the starboard aft wall panel at number 11",
            "base_layer_decision": "state_overlay_plot_cue",
            "render_role": "not_applicable",
            "top_down_legibility": "not_applicable"
          },
          {
            "number": 15,
            "label": "altered-consciousness distortion field",
            "category": "area",
            "position_hint": "subjective visual field centered over the central shared zone near the helm seat",
            "base_layer_decision": "state_overlay_plot_cue",
            "render_role": "not_applicable",
            "top_down_legibility": "not_applicable"
          }
        ],
        "ignored_state_overlay_markers": [
          {
            "number": 12,
            "label": "blood-stained photograph",
            "category": "prop",
            "position_hint": "held or displayed at one contiguous spot in the central shared zone",
            "base_layer_decision": "state_overlay_transient_object",
            "render_role": "not_applicable",
            "top_down_legibility": "not_applicable"
          }
        ],
        "target_unit_marker_numbers": [
          1,
          2,
          3,
          10,
          11
        ],
        "dominant_target_unit_marker_number": null,
        "clean_background_expected": false,
        "diagnostics": [
          "multiple base_structural_unit markers in use_numbered_elements ([1, 2, 3, 10, 11]); dominant_target_unit_marker_number left empty (W19B-1 lock — no lexical disambiguation)"
        ]
      }
    }
  },
  "step_id": "floor_plan_overlay_payload",
  "run_id": "befbb166-5354-4476-99d4-467dbd2487d4",
  "resolved_model": "gpt",
  "updated_at": "2026-07-23T02:08:39.590355+00:00",
  "project_config_snapshot": {}
}