{
  "status": "completed",
  "applicable_count": 1,
  "completed_count": 1,
  "failed_count": 0,
  "schema_version": 1,
  "config_hash": "441d5bef641a0569",
  "data": {
    "overlays": {
      "L03B02": {
        "bg_id": "L03B02",
        "fp_id": "fp_l03_rooftop_exterior",
        "use_numbered_elements": [
          1,
          2,
          3,
          4,
          5,
          6,
          7,
          8,
          9
        ],
        "ignore_numbered_elements": [
          10,
          11,
          12,
          13,
          14,
          15
        ],
        "base_markers_to_reference": [
          {
            "number": 1,
            "label": "open rooftop terrace",
            "category": "area",
            "position_hint": "main exterior roof area surrounding the rooftop room",
            "base_layer_decision": "base_structural_unit",
            "render_role": "not_applicable",
            "top_down_legibility": "not_applicable"
          },
          {
            "number": 2,
            "label": "rooftop room structure",
            "category": "area",
            "position_hint": "north side of the roof, with its main facade facing south",
            "base_layer_decision": "base_structural_unit",
            "render_role": "not_applicable",
            "top_down_legibility": "not_applicable"
          },
          {
            "number": 3,
            "label": "perimeter parapet",
            "category": "area",
            "position_hint": "continuous low wall around the roof edge, marker placed on the west run",
            "base_layer_decision": "base_structural_unit",
            "render_role": "not_applicable",
            "top_down_legibility": "not_applicable"
          },
          {
            "number": 4,
            "label": "iron entrance door",
            "category": "opening",
            "position_hint": "south facade of the rooftop room, toward the west end",
            "base_layer_decision": "base_opening",
            "render_role": "not_applicable",
            "top_down_legibility": "not_applicable"
          },
          {
            "number": 5,
            "label": "small facade window",
            "category": "opening",
            "position_hint": "south facade of the rooftop room, east of the iron door",
            "base_layer_decision": "base_opening",
            "render_role": "not_applicable",
            "top_down_legibility": "not_applicable"
          },
          {
            "number": 6,
            "label": "rooftop water tank",
            "category": "prop",
            "position_hint": "northwest utility pad beside the rooftop room",
            "base_layer_decision": "base_persistent_fixture",
            "render_role": "not_applicable",
            "top_down_legibility": "not_applicable"
          },
          {
            "number": 7,
            "label": "laundry line",
            "category": "prop",
            "position_hint": "single straight run across the east side of the open rooftop terrace",
            "base_layer_decision": "base_persistent_fixture",
            "render_role": "not_applicable",
            "top_down_legibility": "not_applicable"
          },
          {
            "number": 8,
            "label": "low drying platform",
            "category": "furniture",
            "position_hint": "center-east terrace beneath and beside the laundry line",
            "base_layer_decision": "base_persistent_furniture",
            "render_role": "not_applicable",
            "top_down_legibility": "not_applicable"
          },
          {
            "number": 9,
            "label": "rooftop stair arrival",
            "category": "opening",
            "position_hint": "southwest corner of the roof terrace",
            "base_layer_decision": "base_opening",
            "render_role": "not_applicable",
            "top_down_legibility": "not_applicable"
          }
        ],
        "transient_markers_to_describe": [],
        "ignored_state_overlay_markers": [
          {
            "number": 10,
            "label": "attacker silhouette inside room",
            "category": "prop",
            "position_hint": "inside the rooftop room behind the small south-facade window",
            "base_layer_decision": "state_overlay_transient_object",
            "render_role": "not_applicable",
            "top_down_legibility": "not_applicable"
          },
          {
            "number": 11,
            "label": "black cat on parapet",
            "category": "prop",
            "position_hint": "south parapet near the southeast corner, facing the room window",
            "base_layer_decision": "state_overlay_transient_object",
            "render_role": "not_applicable",
            "top_down_legibility": "not_applicable"
          },
          {
            "number": 12,
            "label": "illuminated window state",
            "category": "prop",
            "position_hint": "small south-facade window of the rooftop room",
            "base_layer_decision": "state_overlay_plot_cue",
            "render_role": "not_applicable",
            "top_down_legibility": "not_applicable"
          },
          {
            "number": 13,
            "label": "windblown dried leaves",
            "category": "prop",
            "position_hint": "around the drying platform and along the approach to the iron door",
            "base_layer_decision": "state_overlay_transient_object",
            "render_role": "not_applicable",
            "top_down_legibility": "not_applicable"
          },
          {
            "number": 14,
            "label": "flyer wedged in door gap",
            "category": "prop",
            "position_hint": "at the latch-side gap of the iron entrance door",
            "base_layer_decision": "state_overlay_transient_object",
            "render_role": "not_applicable",
            "top_down_legibility": "not_applicable"
          },
          {
            "number": 15,
            "label": "tampered door slightly ajar",
            "category": "opening",
            "position_hint": "iron entrance door on the south facade",
            "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": 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)"
        ]
      },
      "L03B03": {
        "bg_id": "L03B03",
        "fp_id": "fp_l03_rooftop_exterior",
        "use_numbered_elements": [
          1,
          2,
          3,
          4,
          5,
          6,
          7,
          8,
          9,
          10,
          12,
          13,
          14,
          15
        ],
        "ignore_numbered_elements": [
          11
        ],
        "base_markers_to_reference": [
          {
            "number": 1,
            "label": "open rooftop terrace",
            "category": "area",
            "position_hint": "main exterior roof area surrounding the rooftop room",
            "base_layer_decision": "base_structural_unit",
            "render_role": "not_applicable",
            "top_down_legibility": "not_applicable"
          },
          {
            "number": 2,
            "label": "rooftop room structure",
            "category": "area",
            "position_hint": "north side of the roof, with its main facade facing south",
            "base_layer_decision": "base_structural_unit",
            "render_role": "not_applicable",
            "top_down_legibility": "not_applicable"
          },
          {
            "number": 3,
            "label": "perimeter parapet",
            "category": "area",
            "position_hint": "continuous low wall around the roof edge, marker placed on the west run",
            "base_layer_decision": "base_structural_unit",
            "render_role": "not_applicable",
            "top_down_legibility": "not_applicable"
          },
          {
            "number": 4,
            "label": "iron entrance door",
            "category": "opening",
            "position_hint": "south facade of the rooftop room, toward the west end",
            "base_layer_decision": "base_opening",
            "render_role": "not_applicable",
            "top_down_legibility": "not_applicable"
          },
          {
            "number": 5,
            "label": "small facade window",
            "category": "opening",
            "position_hint": "south facade of the rooftop room, east of the iron door",
            "base_layer_decision": "base_opening",
            "render_role": "not_applicable",
            "top_down_legibility": "not_applicable"
          },
          {
            "number": 6,
            "label": "rooftop water tank",
            "category": "prop",
            "position_hint": "northwest utility pad beside the rooftop room",
            "base_layer_decision": "base_persistent_fixture",
            "render_role": "not_applicable",
            "top_down_legibility": "not_applicable"
          },
          {
            "number": 7,
            "label": "laundry line",
            "category": "prop",
            "position_hint": "single straight run across the east side of the open rooftop terrace",
            "base_layer_decision": "base_persistent_fixture",
            "render_role": "not_applicable",
            "top_down_legibility": "not_applicable"
          },
          {
            "number": 8,
            "label": "low drying platform",
            "category": "furniture",
            "position_hint": "center-east terrace beneath and beside the laundry line",
            "base_layer_decision": "base_persistent_furniture",
            "render_role": "not_applicable",
            "top_down_legibility": "not_applicable"
          },
          {
            "number": 9,
            "label": "rooftop stair arrival",
            "category": "opening",
            "position_hint": "southwest corner of the roof terrace",
            "base_layer_decision": "base_opening",
            "render_role": "not_applicable",
            "top_down_legibility": "not_applicable"
          }
        ],
        "transient_markers_to_describe": [
          {
            "number": 10,
            "label": "attacker silhouette inside room",
            "category": "prop",
            "position_hint": "inside the rooftop room behind the small south-facade window",
            "base_layer_decision": "state_overlay_transient_object",
            "render_role": "not_applicable",
            "top_down_legibility": "not_applicable"
          },
          {
            "number": 12,
            "label": "illuminated window state",
            "category": "prop",
            "position_hint": "small south-facade window of the rooftop room",
            "base_layer_decision": "state_overlay_plot_cue",
            "render_role": "not_applicable",
            "top_down_legibility": "not_applicable"
          },
          {
            "number": 13,
            "label": "windblown dried leaves",
            "category": "prop",
            "position_hint": "around the drying platform and along the approach to the iron door",
            "base_layer_decision": "state_overlay_transient_object",
            "render_role": "not_applicable",
            "top_down_legibility": "not_applicable"
          },
          {
            "number": 14,
            "label": "flyer wedged in door gap",
            "category": "prop",
            "position_hint": "at the latch-side gap of the iron entrance door",
            "base_layer_decision": "state_overlay_transient_object",
            "render_role": "not_applicable",
            "top_down_legibility": "not_applicable"
          },
          {
            "number": 15,
            "label": "tampered door slightly ajar",
            "category": "opening",
            "position_hint": "iron entrance door on the south facade",
            "base_layer_decision": "state_overlay_plot_cue",
            "render_role": "not_applicable",
            "top_down_legibility": "not_applicable"
          }
        ],
        "ignored_state_overlay_markers": [
          {
            "number": 11,
            "label": "black cat on parapet",
            "category": "prop",
            "position_hint": "south parapet near the southeast corner, facing the room window",
            "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": 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)"
        ]
      },
      "L03B01": {
        "bg_id": "L03B01",
        "fp_id": "fp_l03_rooftop_exterior",
        "use_numbered_elements": [
          1,
          2,
          3,
          4,
          5,
          6,
          7,
          8,
          9,
          11,
          12
        ],
        "ignore_numbered_elements": [
          10,
          13,
          14,
          15
        ],
        "base_markers_to_reference": [
          {
            "number": 1,
            "label": "open rooftop terrace",
            "category": "area",
            "position_hint": "main exterior roof area surrounding the rooftop room",
            "base_layer_decision": "base_structural_unit",
            "render_role": "not_applicable",
            "top_down_legibility": "not_applicable"
          },
          {
            "number": 2,
            "label": "rooftop room structure",
            "category": "area",
            "position_hint": "north side of the roof, with its main facade facing south",
            "base_layer_decision": "base_structural_unit",
            "render_role": "not_applicable",
            "top_down_legibility": "not_applicable"
          },
          {
            "number": 3,
            "label": "perimeter parapet",
            "category": "area",
            "position_hint": "continuous low wall around the roof edge, marker placed on the west run",
            "base_layer_decision": "base_structural_unit",
            "render_role": "not_applicable",
            "top_down_legibility": "not_applicable"
          },
          {
            "number": 4,
            "label": "iron entrance door",
            "category": "opening",
            "position_hint": "south facade of the rooftop room, toward the west end",
            "base_layer_decision": "base_opening",
            "render_role": "not_applicable",
            "top_down_legibility": "not_applicable"
          },
          {
            "number": 5,
            "label": "small facade window",
            "category": "opening",
            "position_hint": "south facade of the rooftop room, east of the iron door",
            "base_layer_decision": "base_opening",
            "render_role": "not_applicable",
            "top_down_legibility": "not_applicable"
          },
          {
            "number": 6,
            "label": "rooftop water tank",
            "category": "prop",
            "position_hint": "northwest utility pad beside the rooftop room",
            "base_layer_decision": "base_persistent_fixture",
            "render_role": "not_applicable",
            "top_down_legibility": "not_applicable"
          },
          {
            "number": 7,
            "label": "laundry line",
            "category": "prop",
            "position_hint": "single straight run across the east side of the open rooftop terrace",
            "base_layer_decision": "base_persistent_fixture",
            "render_role": "not_applicable",
            "top_down_legibility": "not_applicable"
          },
          {
            "number": 8,
            "label": "low drying platform",
            "category": "furniture",
            "position_hint": "center-east terrace beneath and beside the laundry line",
            "base_layer_decision": "base_persistent_furniture",
            "render_role": "not_applicable",
            "top_down_legibility": "not_applicable"
          },
          {
            "number": 9,
            "label": "rooftop stair arrival",
            "category": "opening",
            "position_hint": "southwest corner of the roof terrace",
            "base_layer_decision": "base_opening",
            "render_role": "not_applicable",
            "top_down_legibility": "not_applicable"
          }
        ],
        "transient_markers_to_describe": [
          {
            "number": 11,
            "label": "black cat on parapet",
            "category": "prop",
            "position_hint": "south parapet near the southeast corner, facing the room window",
            "base_layer_decision": "state_overlay_transient_object",
            "render_role": "not_applicable",
            "top_down_legibility": "not_applicable"
          },
          {
            "number": 12,
            "label": "illuminated window state",
            "category": "prop",
            "position_hint": "small south-facade window of the rooftop room",
            "base_layer_decision": "state_overlay_plot_cue",
            "render_role": "not_applicable",
            "top_down_legibility": "not_applicable"
          }
        ],
        "ignored_state_overlay_markers": [
          {
            "number": 10,
            "label": "attacker silhouette inside room",
            "category": "prop",
            "position_hint": "inside the rooftop room behind the small south-facade window",
            "base_layer_decision": "state_overlay_transient_object",
            "render_role": "not_applicable",
            "top_down_legibility": "not_applicable"
          },
          {
            "number": 13,
            "label": "windblown dried leaves",
            "category": "prop",
            "position_hint": "around the drying platform and along the approach to the iron door",
            "base_layer_decision": "state_overlay_transient_object",
            "render_role": "not_applicable",
            "top_down_legibility": "not_applicable"
          },
          {
            "number": 14,
            "label": "flyer wedged in door gap",
            "category": "prop",
            "position_hint": "at the latch-side gap of the iron entrance door",
            "base_layer_decision": "state_overlay_transient_object",
            "render_role": "not_applicable",
            "top_down_legibility": "not_applicable"
          },
          {
            "number": 15,
            "label": "tampered door slightly ajar",
            "category": "opening",
            "position_hint": "iron entrance door on the south facade",
            "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)"
        ]
      },
      "L04B01": {
        "bg_id": "L04B01",
        "fp_id": "fp_l04_kitchen",
        "use_numbered_elements": [
          1,
          2,
          3,
          4,
          5,
          6,
          7,
          8,
          9,
          10,
          11,
          12,
          13
        ],
        "ignore_numbered_elements": [],
        "base_markers_to_reference": [
          {
            "number": 1,
            "label": "Kitchen service zone",
            "category": "area",
            "position_hint": "north side of the compact room, containing the sink and stove run",
            "base_layer_decision": "base_structural_unit",
            "render_role": "not_applicable",
            "top_down_legibility": "not_applicable"
          },
          {
            "number": 2,
            "label": "Dining shared edge",
            "category": "area",
            "position_hint": "south side of the kitchen, adjoining the living area",
            "base_layer_decision": "base_structural_unit",
            "render_role": "not_applicable",
            "top_down_legibility": "not_applicable"
          },
          {
            "number": 3,
            "label": "Sink",
            "category": "prop",
            "position_hint": "north wall counter run, directly below the small window",
            "base_layer_decision": "base_persistent_fixture",
            "render_role": "not_applicable",
            "top_down_legibility": "not_applicable"
          },
          {
            "number": 4,
            "label": "Stove",
            "category": "prop",
            "position_hint": "north wall counter run, immediately beside the sink",
            "base_layer_decision": "base_persistent_fixture",
            "render_role": "not_applicable",
            "top_down_legibility": "not_applicable"
          },
          {
            "number": 5,
            "label": "Small kitchen window",
            "category": "opening",
            "position_hint": "north exterior wall above the sink",
            "base_layer_decision": "base_opening",
            "render_role": "not_applicable",
            "top_down_legibility": "not_applicable"
          },
          {
            "number": 6,
            "label": "Television",
            "category": "prop",
            "position_hint": "east wall, facing both the stove and dining edge",
            "base_layer_decision": "base_persistent_fixture",
            "render_role": "not_applicable",
            "top_down_legibility": "not_applicable"
          },
          {
            "number": 7,
            "label": "Dining table",
            "category": "furniture",
            "position_hint": "center of the dining shared edge, clear of the kitchen work aisle",
            "base_layer_decision": "base_persistent_furniture",
            "render_role": "not_applicable",
            "top_down_legibility": "not_applicable"
          },
          {
            "number": 8,
            "label": "Open passage",
            "category": "opening",
            "position_hint": "southwest boundary, connecting the kitchen and dining edge to the rest of the dwelling",
            "base_layer_decision": "base_opening",
            "render_role": "not_applicable",
            "top_down_legibility": "not_applicable"
          }
        ],
        "transient_markers_to_describe": [
          {
            "number": 9,
            "label": "Steaming pot",
            "category": "prop",
            "position_hint": "on the stove at number 4",
            "base_layer_decision": "state_overlay_transient_object",
            "render_role": "not_applicable",
            "top_down_legibility": "not_applicable"
          },
          {
            "number": 10,
            "label": "Running sink water",
            "category": "prop",
            "position_hint": "at the faucet of number 3",
            "base_layer_decision": "state_overlay_plot_cue",
            "render_role": "not_applicable",
            "top_down_legibility": "not_applicable"
          },
          {
            "number": 11,
            "label": "Washing herbs",
            "category": "prop",
            "position_hint": "inside the basin of number 3",
            "base_layer_decision": "state_overlay_transient_object",
            "render_role": "not_applicable",
            "top_down_legibility": "not_applicable"
          },
          {
            "number": 12,
            "label": "Television news image",
            "category": "prop",
            "position_hint": "within the screen of number 6",
            "base_layer_decision": "state_overlay_plot_cue",
            "render_role": "not_applicable",
            "top_down_legibility": "not_applicable"
          },
          {
            "number": 13,
            "label": "Window sunlight",
            "category": "prop",
            "position_hint": "entering through number 5 toward the kitchen work aisle",
            "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
        ],
        "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)"
        ]
      },
      "L04B02": {
        "bg_id": "L04B02",
        "fp_id": "fp_l04_main_interior",
        "use_numbered_elements": [
          1,
          2,
          3,
          7,
          8,
          9,
          10,
          11,
          12,
          13,
          14,
          15
        ],
        "ignore_numbered_elements": [
          22,
          23,
          24,
          25,
          26,
          27,
          28,
          29,
          30,
          31,
          32,
          33,
          34,
          35
        ],
        "base_markers_to_reference": [
          {
            "number": 1,
            "label": "Living and dining area",
            "category": "area",
            "position_hint": "central shared zone immediately inside the entrance",
            "base_layer_decision": "base_structural_unit",
            "render_role": "not_applicable",
            "top_down_legibility": "not_applicable"
          },
          {
            "number": 2,
            "label": "Entry threshold",
            "category": "area",
            "position_hint": "southwest edge of the unit inside the iron entrance door",
            "base_layer_decision": "base_structural_unit",
            "render_role": "not_applicable",
            "top_down_legibility": "not_applicable"
          },
          {
            "number": 3,
            "label": "Kitchen service zone",
            "category": "area",
            "position_hint": "along one side of the living area, adjacent to the dining table",
            "base_layer_decision": "base_structural_unit",
            "render_role": "not_applicable",
            "top_down_legibility": "not_applicable"
          },
          {
            "number": 7,
            "label": "Iron entrance door",
            "category": "opening",
            "position_hint": "exterior wall at the entry threshold",
            "base_layer_decision": "base_opening",
            "render_role": "not_applicable",
            "top_down_legibility": "not_applicable"
          },
          {
            "number": 8,
            "label": "Small living window",
            "category": "opening",
            "position_hint": "exterior wall of the living area near the dining and kitchen zone",
            "base_layer_decision": "base_opening",
            "render_role": "not_applicable",
            "top_down_legibility": "not_applicable"
          },
          {
            "number": 9,
            "label": "Daughter bedroom door",
            "category": "opening",
            "position_hint": "between the central circulation and daughter bedroom",
            "base_layer_decision": "base_opening",
            "render_role": "not_applicable",
            "top_down_legibility": "not_applicable"
          },
          {
            "number": 10,
            "label": "Mother bedroom door",
            "category": "opening",
            "position_hint": "between the living circulation and mother bedroom",
            "base_layer_decision": "base_opening",
            "render_role": "not_applicable",
            "top_down_legibility": "not_applicable"
          },
          {
            "number": 11,
            "label": "Bathroom door",
            "category": "opening",
            "position_hint": "between the central circulation and bathroom",
            "base_layer_decision": "base_opening",
            "render_role": "not_applicable",
            "top_down_legibility": "not_applicable"
          },
          {
            "number": 12,
            "label": "Kitchen sink and faucet",
            "category": "furniture",
            "position_hint": "fixed counter run in the kitchen service zone",
            "base_layer_decision": "base_persistent_fixture",
            "render_role": "not_applicable",
            "top_down_legibility": "not_applicable"
          },
          {
            "number": 13,
            "label": "Kitchen stovetop",
            "category": "furniture",
            "position_hint": "same kitchen counter run, separated from the sink",
            "base_layer_decision": "base_persistent_fixture",
            "render_role": "not_applicable",
            "top_down_legibility": "not_applicable"
          },
          {
            "number": 14,
            "label": "Dining table",
            "category": "furniture",
            "position_hint": "living area beside the kitchen service zone",
            "base_layer_decision": "base_persistent_furniture",
            "render_role": "not_applicable",
            "top_down_legibility": "not_applicable"
          },
          {
            "number": 15,
            "label": "Television",
            "category": "furniture",
            "position_hint": "against the living-area wall facing the dining side",
            "base_layer_decision": "base_persistent_furniture",
            "render_role": "not_applicable",
            "top_down_legibility": "not_applicable"
          }
        ],
        "transient_markers_to_describe": [],
        "ignored_state_overlay_markers": [
          {
            "number": 22,
            "label": "Mutilated body behind curtain",
            "category": "prop",
            "position_hint": "single location behind the curtain in the daughter bedroom",
            "base_layer_decision": "state_overlay_transient_object",
            "render_role": "not_applicable",
            "top_down_legibility": "not_applicable"
          },
          {
            "number": 23,
            "label": "Blood pool",
            "category": "prop",
            "position_hint": "daughter bedroom floor beneath and immediately in front of the body",
            "base_layer_decision": "state_overlay_plot_cue",
            "render_role": "not_applicable",
            "top_down_legibility": "not_applicable"
          },
          {
            "number": 24,
            "label": "Bloody footprint trail",
            "category": "prop",
            "position_hint": "continuous trail across the daughter bedroom floor toward the curtain",
            "base_layer_decision": "state_overlay_plot_cue",
            "render_role": "not_applicable",
            "top_down_legibility": "not_applicable"
          },
          {
            "number": 25,
            "label": "Red wall circle above bed",
            "category": "prop",
            "position_hint": "single wall location directly above the daughter bed",
            "base_layer_decision": "state_overlay_plot_cue",
            "render_role": "not_applicable",
            "top_down_legibility": "not_applicable"
          },
          {
            "number": 26,
            "label": "Crumpled old photograph",
            "category": "prop",
            "position_hint": "in the victim's hand at the curtain corner",
            "base_layer_decision": "state_overlay_transient_object",
            "render_role": "not_applicable",
            "top_down_legibility": "not_applicable"
          },
          {
            "number": 27,
            "label": "Two tea cups, one overturned",
            "category": "prop",
            "position_hint": "single grouped placement on the dining table",
            "base_layer_decision": "state_overlay_transient_object",
            "render_role": "not_applicable",
            "top_down_legibility": "not_applicable"
          },
          {
            "number": 28,
            "label": "Bathroom red circle apparition",
            "category": "prop",
            "position_hint": "single bathroom wall location visible near the mirror or washbasin",
            "base_layer_decision": "state_overlay_plot_cue",
            "render_role": "not_applicable",
            "top_down_legibility": "not_applicable"
          },
          {
            "number": 29,
            "label": "Melting face in family photograph",
            "category": "prop",
            "position_hint": "single framed family photograph on the dining table",
            "base_layer_decision": "state_overlay_plot_cue",
            "render_role": "not_applicable",
            "top_down_legibility": "not_applicable"
          },
          {
            "number": 30,
            "label": "Intruder footprint trail",
            "category": "prop",
            "position_hint": "continuous trail from the living area toward the daughter bedroom",
            "base_layer_decision": "state_overlay_plot_cue",
            "render_role": "not_applicable",
            "top_down_legibility": "not_applicable"
          },
          {
            "number": 31,
            "label": "Overturned dining chair",
            "category": "furniture",
            "position_hint": "one displaced chair beside the dining table",
            "base_layer_decision": "state_overlay_transient_object",
            "render_role": "not_applicable",
            "top_down_legibility": "not_applicable"
          },
          {
            "number": 32,
            "label": "Ransacked bedroom clutter pile",
            "category": "prop",
            "position_hint": "single localized pile on the daughter bedroom floor",
            "base_layer_decision": "state_overlay_transient_object",
            "render_role": "not_applicable",
            "top_down_legibility": "not_applicable"
          },
          {
            "number": 33,
            "label": "Bloodied photograph pinned in red circle",
            "category": "prop",
            "position_hint": "single contiguous wall display in the daughter bedroom",
            "base_layer_decision": "state_overlay_plot_cue",
            "render_role": "not_applicable",
            "top_down_legibility": "not_applicable"
          },
          {
            "number": 34,
            "label": "Living window open state",
            "category": "opening",
            "position_hint": "at the small living window",
            "base_layer_decision": "state_overlay_plot_cue",
            "render_role": "not_applicable",
            "top_down_legibility": "not_applicable"
          },
          {
            "number": 35,
            "label": "Entrance door ajar state",
            "category": "opening",
            "position_hint": "at the iron entrance doorway",
            "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": 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)"
        ]
      },
      "L04B06": {
        "bg_id": "L04B06",
        "fp_id": "fp_l04_main_interior",
        "use_numbered_elements": [
          1,
          5,
          9,
          14,
          17,
          18,
          21,
          22,
          23,
          24,
          25,
          26,
          27
        ],
        "ignore_numbered_elements": [
          28,
          29,
          30,
          31,
          32,
          33,
          34,
          35
        ],
        "base_markers_to_reference": [
          {
            "number": 1,
            "label": "Living and dining area",
            "category": "area",
            "position_hint": "central shared zone immediately inside the entrance",
            "base_layer_decision": "base_structural_unit",
            "render_role": "not_applicable",
            "top_down_legibility": "not_applicable"
          },
          {
            "number": 5,
            "label": "Daughter bedroom",
            "category": "area",
            "position_hint": "private room at the far end of the central circulation",
            "base_layer_decision": "base_structural_unit",
            "render_role": "not_applicable",
            "top_down_legibility": "not_applicable"
          },
          {
            "number": 9,
            "label": "Daughter bedroom door",
            "category": "opening",
            "position_hint": "between the central circulation and daughter bedroom",
            "base_layer_decision": "base_opening",
            "render_role": "not_applicable",
            "top_down_legibility": "not_applicable"
          },
          {
            "number": 14,
            "label": "Dining table",
            "category": "furniture",
            "position_hint": "living area beside the kitchen service zone",
            "base_layer_decision": "base_persistent_furniture",
            "render_role": "not_applicable",
            "top_down_legibility": "not_applicable"
          },
          {
            "number": 17,
            "label": "Daughter bed",
            "category": "furniture",
            "position_hint": "inside the daughter bedroom near the marked wall location",
            "base_layer_decision": "base_persistent_furniture",
            "render_role": "not_applicable",
            "top_down_legibility": "not_applicable"
          },
          {
            "number": 18,
            "label": "Daughter bedroom window",
            "category": "opening",
            "position_hint": "exterior wall of the daughter bedroom beside the bed corner",
            "base_layer_decision": "base_opening",
            "render_role": "not_applicable",
            "top_down_legibility": "not_applicable"
          },
          {
            "number": 21,
            "label": "Bedroom curtain",
            "category": "furniture",
            "position_hint": "single curtain run covering the daughter bedroom window",
            "base_layer_decision": "base_persistent_furniture",
            "render_role": "not_applicable",
            "top_down_legibility": "not_applicable"
          }
        ],
        "transient_markers_to_describe": [
          {
            "number": 22,
            "label": "Mutilated body behind curtain",
            "category": "prop",
            "position_hint": "single location behind the curtain in the daughter bedroom",
            "base_layer_decision": "state_overlay_transient_object",
            "render_role": "not_applicable",
            "top_down_legibility": "not_applicable"
          },
          {
            "number": 23,
            "label": "Blood pool",
            "category": "prop",
            "position_hint": "daughter bedroom floor beneath and immediately in front of the body",
            "base_layer_decision": "state_overlay_plot_cue",
            "render_role": "not_applicable",
            "top_down_legibility": "not_applicable"
          },
          {
            "number": 24,
            "label": "Bloody footprint trail",
            "category": "prop",
            "position_hint": "continuous trail across the daughter bedroom floor toward the curtain",
            "base_layer_decision": "state_overlay_plot_cue",
            "render_role": "not_applicable",
            "top_down_legibility": "not_applicable"
          },
          {
            "number": 25,
            "label": "Red wall circle above bed",
            "category": "prop",
            "position_hint": "single wall location directly above the daughter bed",
            "base_layer_decision": "state_overlay_plot_cue",
            "render_role": "not_applicable",
            "top_down_legibility": "not_applicable"
          },
          {
            "number": 26,
            "label": "Crumpled old photograph",
            "category": "prop",
            "position_hint": "in the victim's hand at the curtain corner",
            "base_layer_decision": "state_overlay_transient_object",
            "render_role": "not_applicable",
            "top_down_legibility": "not_applicable"
          },
          {
            "number": 27,
            "label": "Two tea cups, one overturned",
            "category": "prop",
            "position_hint": "single grouped placement on the dining table",
            "base_layer_decision": "state_overlay_transient_object",
            "render_role": "not_applicable",
            "top_down_legibility": "not_applicable"
          }
        ],
        "ignored_state_overlay_markers": [
          {
            "number": 28,
            "label": "Bathroom red circle apparition",
            "category": "prop",
            "position_hint": "single bathroom wall location visible near the mirror or washbasin",
            "base_layer_decision": "state_overlay_plot_cue",
            "render_role": "not_applicable",
            "top_down_legibility": "not_applicable"
          },
          {
            "number": 29,
            "label": "Melting face in family photograph",
            "category": "prop",
            "position_hint": "single framed family photograph on the dining table",
            "base_layer_decision": "state_overlay_plot_cue",
            "render_role": "not_applicable",
            "top_down_legibility": "not_applicable"
          },
          {
            "number": 30,
            "label": "Intruder footprint trail",
            "category": "prop",
            "position_hint": "continuous trail from the living area toward the daughter bedroom",
            "base_layer_decision": "state_overlay_plot_cue",
            "render_role": "not_applicable",
            "top_down_legibility": "not_applicable"
          },
          {
            "number": 31,
            "label": "Overturned dining chair",
            "category": "furniture",
            "position_hint": "one displaced chair beside the dining table",
            "base_layer_decision": "state_overlay_transient_object",
            "render_role": "not_applicable",
            "top_down_legibility": "not_applicable"
          },
          {
            "number": 32,
            "label": "Ransacked bedroom clutter pile",
            "category": "prop",
            "position_hint": "single localized pile on the daughter bedroom floor",
            "base_layer_decision": "state_overlay_transient_object",
            "render_role": "not_applicable",
            "top_down_legibility": "not_applicable"
          },
          {
            "number": 33,
            "label": "Bloodied photograph pinned in red circle",
            "category": "prop",
            "position_hint": "single contiguous wall display in the daughter bedroom",
            "base_layer_decision": "state_overlay_plot_cue",
            "render_role": "not_applicable",
            "top_down_legibility": "not_applicable"
          },
          {
            "number": 34,
            "label": "Living window open state",
            "category": "opening",
            "position_hint": "at the small living window",
            "base_layer_decision": "state_overlay_plot_cue",
            "render_role": "not_applicable",
            "top_down_legibility": "not_applicable"
          },
          {
            "number": 35,
            "label": "Entrance door ajar state",
            "category": "opening",
            "position_hint": "at the iron entrance doorway",
            "base_layer_decision": "state_overlay_plot_cue",
            "render_role": "not_applicable",
            "top_down_legibility": "not_applicable"
          }
        ],
        "target_unit_marker_numbers": [
          1,
          5
        ],
        "dominant_target_unit_marker_number": null,
        "clean_background_expected": false,
        "diagnostics": [
          "multiple base_structural_unit markers in use_numbered_elements ([1, 5]); dominant_target_unit_marker_number left empty (W19B-1 lock — no lexical disambiguation)"
        ]
      },
      "L04B07": {
        "bg_id": "L04B07",
        "fp_id": "fp_l04_main_interior",
        "use_numbered_elements": [
          1,
          2,
          3,
          4,
          5,
          6,
          7,
          8,
          9,
          10,
          11,
          12,
          13,
          14,
          15,
          16,
          17,
          18,
          19,
          20,
          21
        ],
        "ignore_numbered_elements": [
          22,
          23,
          24,
          25,
          26,
          27,
          28,
          29,
          30,
          31,
          32,
          33,
          34,
          35
        ],
        "base_markers_to_reference": [
          {
            "number": 1,
            "label": "Living and dining area",
            "category": "area",
            "position_hint": "central shared zone immediately inside the entrance",
            "base_layer_decision": "base_structural_unit",
            "render_role": "not_applicable",
            "top_down_legibility": "not_applicable"
          },
          {
            "number": 2,
            "label": "Entry threshold",
            "category": "area",
            "position_hint": "southwest edge of the unit inside the iron entrance door",
            "base_layer_decision": "base_structural_unit",
            "render_role": "not_applicable",
            "top_down_legibility": "not_applicable"
          },
          {
            "number": 3,
            "label": "Kitchen service zone",
            "category": "area",
            "position_hint": "along one side of the living area, adjacent to the dining table",
            "base_layer_decision": "base_structural_unit",
            "render_role": "not_applicable",
            "top_down_legibility": "not_applicable"
          },
          {
            "number": 4,
            "label": "Mother bedroom",
            "category": "area",
            "position_hint": "private room branching from the central living circulation",
            "base_layer_decision": "base_structural_unit",
            "render_role": "not_applicable",
            "top_down_legibility": "not_applicable"
          },
          {
            "number": 5,
            "label": "Daughter bedroom",
            "category": "area",
            "position_hint": "private room at the far end of the central circulation",
            "base_layer_decision": "base_structural_unit",
            "render_role": "not_applicable",
            "top_down_legibility": "not_applicable"
          },
          {
            "number": 6,
            "label": "Bathroom",
            "category": "area",
            "position_hint": "compact service room beside the bedroom circulation",
            "base_layer_decision": "base_structural_unit",
            "render_role": "not_applicable",
            "top_down_legibility": "not_applicable"
          },
          {
            "number": 7,
            "label": "Iron entrance door",
            "category": "opening",
            "position_hint": "exterior wall at the entry threshold",
            "base_layer_decision": "base_opening",
            "render_role": "not_applicable",
            "top_down_legibility": "not_applicable"
          },
          {
            "number": 8,
            "label": "Small living window",
            "category": "opening",
            "position_hint": "exterior wall of the living area near the dining and kitchen zone",
            "base_layer_decision": "base_opening",
            "render_role": "not_applicable",
            "top_down_legibility": "not_applicable"
          },
          {
            "number": 9,
            "label": "Daughter bedroom door",
            "category": "opening",
            "position_hint": "between the central circulation and daughter bedroom",
            "base_layer_decision": "base_opening",
            "render_role": "not_applicable",
            "top_down_legibility": "not_applicable"
          },
          {
            "number": 10,
            "label": "Mother bedroom door",
            "category": "opening",
            "position_hint": "between the living circulation and mother bedroom",
            "base_layer_decision": "base_opening",
            "render_role": "not_applicable",
            "top_down_legibility": "not_applicable"
          },
          {
            "number": 11,
            "label": "Bathroom door",
            "category": "opening",
            "position_hint": "between the central circulation and bathroom",
            "base_layer_decision": "base_opening",
            "render_role": "not_applicable",
            "top_down_legibility": "not_applicable"
          },
          {
            "number": 12,
            "label": "Kitchen sink and faucet",
            "category": "furniture",
            "position_hint": "fixed counter run in the kitchen service zone",
            "base_layer_decision": "base_persistent_fixture",
            "render_role": "not_applicable",
            "top_down_legibility": "not_applicable"
          },
          {
            "number": 13,
            "label": "Kitchen stovetop",
            "category": "furniture",
            "position_hint": "same kitchen counter run, separated from the sink",
            "base_layer_decision": "base_persistent_fixture",
            "render_role": "not_applicable",
            "top_down_legibility": "not_applicable"
          },
          {
            "number": 14,
            "label": "Dining table",
            "category": "furniture",
            "position_hint": "living area beside the kitchen service zone",
            "base_layer_decision": "base_persistent_furniture",
            "render_role": "not_applicable",
            "top_down_legibility": "not_applicable"
          },
          {
            "number": 15,
            "label": "Television",
            "category": "furniture",
            "position_hint": "against the living-area wall facing the dining side",
            "base_layer_decision": "base_persistent_furniture",
            "render_role": "not_applicable",
            "top_down_legibility": "not_applicable"
          },
          {
            "number": 16,
            "label": "Mother bed",
            "category": "furniture",
            "position_hint": "against one wall inside the mother bedroom",
            "base_layer_decision": "base_persistent_furniture",
            "render_role": "not_applicable",
            "top_down_legibility": "not_applicable"
          },
          {
            "number": 17,
            "label": "Daughter bed",
            "category": "furniture",
            "position_hint": "inside the daughter bedroom near the marked wall location",
            "base_layer_decision": "base_persistent_furniture",
            "render_role": "not_applicable",
            "top_down_legibility": "not_applicable"
          },
          {
            "number": 18,
            "label": "Daughter bedroom window",
            "category": "opening",
            "position_hint": "exterior wall of the daughter bedroom beside the bed corner",
            "base_layer_decision": "base_opening",
            "render_role": "not_applicable",
            "top_down_legibility": "not_applicable"
          },
          {
            "number": 19,
            "label": "Bathroom washbasin",
            "category": "furniture",
            "position_hint": "against one wall inside the compact bathroom",
            "base_layer_decision": "base_persistent_fixture",
            "render_role": "not_applicable",
            "top_down_legibility": "not_applicable"
          },
          {
            "number": 20,
            "label": "Bathroom toilet",
            "category": "furniture",
            "position_hint": "inside the bathroom beside the washbasin clearance",
            "base_layer_decision": "base_persistent_fixture",
            "render_role": "not_applicable",
            "top_down_legibility": "not_applicable"
          },
          {
            "number": 21,
            "label": "Bedroom curtain",
            "category": "furniture",
            "position_hint": "single curtain run covering the daughter bedroom 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": 22,
            "label": "Mutilated body behind curtain",
            "category": "prop",
            "position_hint": "single location behind the curtain in the daughter bedroom",
            "base_layer_decision": "state_overlay_transient_object",
            "render_role": "not_applicable",
            "top_down_legibility": "not_applicable"
          },
          {
            "number": 23,
            "label": "Blood pool",
            "category": "prop",
            "position_hint": "daughter bedroom floor beneath and immediately in front of the body",
            "base_layer_decision": "state_overlay_plot_cue",
            "render_role": "not_applicable",
            "top_down_legibility": "not_applicable"
          },
          {
            "number": 24,
            "label": "Bloody footprint trail",
            "category": "prop",
            "position_hint": "continuous trail across the daughter bedroom floor toward the curtain",
            "base_layer_decision": "state_overlay_plot_cue",
            "render_role": "not_applicable",
            "top_down_legibility": "not_applicable"
          },
          {
            "number": 25,
            "label": "Red wall circle above bed",
            "category": "prop",
            "position_hint": "single wall location directly above the daughter bed",
            "base_layer_decision": "state_overlay_plot_cue",
            "render_role": "not_applicable",
            "top_down_legibility": "not_applicable"
          },
          {
            "number": 26,
            "label": "Crumpled old photograph",
            "category": "prop",
            "position_hint": "in the victim's hand at the curtain corner",
            "base_layer_decision": "state_overlay_transient_object",
            "render_role": "not_applicable",
            "top_down_legibility": "not_applicable"
          },
          {
            "number": 27,
            "label": "Two tea cups, one overturned",
            "category": "prop",
            "position_hint": "single grouped placement on the dining table",
            "base_layer_decision": "state_overlay_transient_object",
            "render_role": "not_applicable",
            "top_down_legibility": "not_applicable"
          },
          {
            "number": 28,
            "label": "Bathroom red circle apparition",
            "category": "prop",
            "position_hint": "single bathroom wall location visible near the mirror or washbasin",
            "base_layer_decision": "state_overlay_plot_cue",
            "render_role": "not_applicable",
            "top_down_legibility": "not_applicable"
          },
          {
            "number": 29,
            "label": "Melting face in family photograph",
            "category": "prop",
            "position_hint": "single framed family photograph on the dining table",
            "base_layer_decision": "state_overlay_plot_cue",
            "render_role": "not_applicable",
            "top_down_legibility": "not_applicable"
          },
          {
            "number": 30,
            "label": "Intruder footprint trail",
            "category": "prop",
            "position_hint": "continuous trail from the living area toward the daughter bedroom",
            "base_layer_decision": "state_overlay_plot_cue",
            "render_role": "not_applicable",
            "top_down_legibility": "not_applicable"
          },
          {
            "number": 31,
            "label": "Overturned dining chair",
            "category": "furniture",
            "position_hint": "one displaced chair beside the dining table",
            "base_layer_decision": "state_overlay_transient_object",
            "render_role": "not_applicable",
            "top_down_legibility": "not_applicable"
          },
          {
            "number": 32,
            "label": "Ransacked bedroom clutter pile",
            "category": "prop",
            "position_hint": "single localized pile on the daughter bedroom floor",
            "base_layer_decision": "state_overlay_transient_object",
            "render_role": "not_applicable",
            "top_down_legibility": "not_applicable"
          },
          {
            "number": 33,
            "label": "Bloodied photograph pinned in red circle",
            "category": "prop",
            "position_hint": "single contiguous wall display in the daughter bedroom",
            "base_layer_decision": "state_overlay_plot_cue",
            "render_role": "not_applicable",
            "top_down_legibility": "not_applicable"
          },
          {
            "number": 34,
            "label": "Living window open state",
            "category": "opening",
            "position_hint": "at the small living window",
            "base_layer_decision": "state_overlay_plot_cue",
            "render_role": "not_applicable",
            "top_down_legibility": "not_applicable"
          },
          {
            "number": 35,
            "label": "Entrance door ajar state",
            "category": "opening",
            "position_hint": "at the iron entrance doorway",
            "base_layer_decision": "state_overlay_plot_cue",
            "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)"
        ]
      },
      "L04B05": {
        "bg_id": "L04B05",
        "fp_id": "fp_l04_main_interior",
        "use_numbered_elements": [
          1,
          4,
          5,
          6,
          8,
          9,
          10,
          11,
          14,
          16,
          17,
          18,
          19,
          20,
          21,
          28,
          29
        ],
        "ignore_numbered_elements": [
          22,
          23,
          24,
          25,
          26,
          27,
          30,
          31,
          32,
          33,
          34,
          35
        ],
        "base_markers_to_reference": [
          {
            "number": 1,
            "label": "Living and dining area",
            "category": "area",
            "position_hint": "central shared zone immediately inside the entrance",
            "base_layer_decision": "base_structural_unit",
            "render_role": "not_applicable",
            "top_down_legibility": "not_applicable"
          },
          {
            "number": 4,
            "label": "Mother bedroom",
            "category": "area",
            "position_hint": "private room branching from the central living circulation",
            "base_layer_decision": "base_structural_unit",
            "render_role": "not_applicable",
            "top_down_legibility": "not_applicable"
          },
          {
            "number": 5,
            "label": "Daughter bedroom",
            "category": "area",
            "position_hint": "private room at the far end of the central circulation",
            "base_layer_decision": "base_structural_unit",
            "render_role": "not_applicable",
            "top_down_legibility": "not_applicable"
          },
          {
            "number": 6,
            "label": "Bathroom",
            "category": "area",
            "position_hint": "compact service room beside the bedroom circulation",
            "base_layer_decision": "base_structural_unit",
            "render_role": "not_applicable",
            "top_down_legibility": "not_applicable"
          },
          {
            "number": 8,
            "label": "Small living window",
            "category": "opening",
            "position_hint": "exterior wall of the living area near the dining and kitchen zone",
            "base_layer_decision": "base_opening",
            "render_role": "not_applicable",
            "top_down_legibility": "not_applicable"
          },
          {
            "number": 9,
            "label": "Daughter bedroom door",
            "category": "opening",
            "position_hint": "between the central circulation and daughter bedroom",
            "base_layer_decision": "base_opening",
            "render_role": "not_applicable",
            "top_down_legibility": "not_applicable"
          },
          {
            "number": 10,
            "label": "Mother bedroom door",
            "category": "opening",
            "position_hint": "between the living circulation and mother bedroom",
            "base_layer_decision": "base_opening",
            "render_role": "not_applicable",
            "top_down_legibility": "not_applicable"
          },
          {
            "number": 11,
            "label": "Bathroom door",
            "category": "opening",
            "position_hint": "between the central circulation and bathroom",
            "base_layer_decision": "base_opening",
            "render_role": "not_applicable",
            "top_down_legibility": "not_applicable"
          },
          {
            "number": 14,
            "label": "Dining table",
            "category": "furniture",
            "position_hint": "living area beside the kitchen service zone",
            "base_layer_decision": "base_persistent_furniture",
            "render_role": "not_applicable",
            "top_down_legibility": "not_applicable"
          },
          {
            "number": 16,
            "label": "Mother bed",
            "category": "furniture",
            "position_hint": "against one wall inside the mother bedroom",
            "base_layer_decision": "base_persistent_furniture",
            "render_role": "not_applicable",
            "top_down_legibility": "not_applicable"
          },
          {
            "number": 17,
            "label": "Daughter bed",
            "category": "furniture",
            "position_hint": "inside the daughter bedroom near the marked wall location",
            "base_layer_decision": "base_persistent_furniture",
            "render_role": "not_applicable",
            "top_down_legibility": "not_applicable"
          },
          {
            "number": 18,
            "label": "Daughter bedroom window",
            "category": "opening",
            "position_hint": "exterior wall of the daughter bedroom beside the bed corner",
            "base_layer_decision": "base_opening",
            "render_role": "not_applicable",
            "top_down_legibility": "not_applicable"
          },
          {
            "number": 19,
            "label": "Bathroom washbasin",
            "category": "furniture",
            "position_hint": "against one wall inside the compact bathroom",
            "base_layer_decision": "base_persistent_fixture",
            "render_role": "not_applicable",
            "top_down_legibility": "not_applicable"
          },
          {
            "number": 20,
            "label": "Bathroom toilet",
            "category": "furniture",
            "position_hint": "inside the bathroom beside the washbasin clearance",
            "base_layer_decision": "base_persistent_fixture",
            "render_role": "not_applicable",
            "top_down_legibility": "not_applicable"
          },
          {
            "number": 21,
            "label": "Bedroom curtain",
            "category": "furniture",
            "position_hint": "single curtain run covering the daughter bedroom window",
            "base_layer_decision": "base_persistent_furniture",
            "render_role": "not_applicable",
            "top_down_legibility": "not_applicable"
          }
        ],
        "transient_markers_to_describe": [
          {
            "number": 28,
            "label": "Bathroom red circle apparition",
            "category": "prop",
            "position_hint": "single bathroom wall location visible near the mirror or washbasin",
            "base_layer_decision": "state_overlay_plot_cue",
            "render_role": "not_applicable",
            "top_down_legibility": "not_applicable"
          },
          {
            "number": 29,
            "label": "Melting face in family photograph",
            "category": "prop",
            "position_hint": "single framed family photograph 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": 22,
            "label": "Mutilated body behind curtain",
            "category": "prop",
            "position_hint": "single location behind the curtain in the daughter bedroom",
            "base_layer_decision": "state_overlay_transient_object",
            "render_role": "not_applicable",
            "top_down_legibility": "not_applicable"
          },
          {
            "number": 23,
            "label": "Blood pool",
            "category": "prop",
            "position_hint": "daughter bedroom floor beneath and immediately in front of the body",
            "base_layer_decision": "state_overlay_plot_cue",
            "render_role": "not_applicable",
            "top_down_legibility": "not_applicable"
          },
          {
            "number": 24,
            "label": "Bloody footprint trail",
            "category": "prop",
            "position_hint": "continuous trail across the daughter bedroom floor toward the curtain",
            "base_layer_decision": "state_overlay_plot_cue",
            "render_role": "not_applicable",
            "top_down_legibility": "not_applicable"
          },
          {
            "number": 25,
            "label": "Red wall circle above bed",
            "category": "prop",
            "position_hint": "single wall location directly above the daughter bed",
            "base_layer_decision": "state_overlay_plot_cue",
            "render_role": "not_applicable",
            "top_down_legibility": "not_applicable"
          },
          {
            "number": 26,
            "label": "Crumpled old photograph",
            "category": "prop",
            "position_hint": "in the victim's hand at the curtain corner",
            "base_layer_decision": "state_overlay_transient_object",
            "render_role": "not_applicable",
            "top_down_legibility": "not_applicable"
          },
          {
            "number": 27,
            "label": "Two tea cups, one overturned",
            "category": "prop",
            "position_hint": "single grouped placement on the dining table",
            "base_layer_decision": "state_overlay_transient_object",
            "render_role": "not_applicable",
            "top_down_legibility": "not_applicable"
          },
          {
            "number": 30,
            "label": "Intruder footprint trail",
            "category": "prop",
            "position_hint": "continuous trail from the living area toward the daughter bedroom",
            "base_layer_decision": "state_overlay_plot_cue",
            "render_role": "not_applicable",
            "top_down_legibility": "not_applicable"
          },
          {
            "number": 31,
            "label": "Overturned dining chair",
            "category": "furniture",
            "position_hint": "one displaced chair beside the dining table",
            "base_layer_decision": "state_overlay_transient_object",
            "render_role": "not_applicable",
            "top_down_legibility": "not_applicable"
          },
          {
            "number": 32,
            "label": "Ransacked bedroom clutter pile",
            "category": "prop",
            "position_hint": "single localized pile on the daughter bedroom floor",
            "base_layer_decision": "state_overlay_transient_object",
            "render_role": "not_applicable",
            "top_down_legibility": "not_applicable"
          },
          {
            "number": 33,
            "label": "Bloodied photograph pinned in red circle",
            "category": "prop",
            "position_hint": "single contiguous wall display in the daughter bedroom",
            "base_layer_decision": "state_overlay_plot_cue",
            "render_role": "not_applicable",
            "top_down_legibility": "not_applicable"
          },
          {
            "number": 34,
            "label": "Living window open state",
            "category": "opening",
            "position_hint": "at the small living window",
            "base_layer_decision": "state_overlay_plot_cue",
            "render_role": "not_applicable",
            "top_down_legibility": "not_applicable"
          },
          {
            "number": 35,
            "label": "Entrance door ajar state",
            "category": "opening",
            "position_hint": "at the iron entrance doorway",
            "base_layer_decision": "state_overlay_plot_cue",
            "render_role": "not_applicable",
            "top_down_legibility": "not_applicable"
          }
        ],
        "target_unit_marker_numbers": [
          1,
          4,
          5,
          6
        ],
        "dominant_target_unit_marker_number": null,
        "clean_background_expected": false,
        "diagnostics": [
          "multiple base_structural_unit markers in use_numbered_elements ([1, 4, 5, 6]); dominant_target_unit_marker_number left empty (W19B-1 lock — no lexical disambiguation)"
        ]
      },
      "L04B03": {
        "bg_id": "L04B03",
        "fp_id": "fp_l04_main_interior",
        "use_numbered_elements": [
          1,
          5,
          8,
          9,
          14,
          17,
          18,
          21,
          30,
          31,
          32,
          33,
          34
        ],
        "ignore_numbered_elements": [
          22,
          23,
          24,
          25,
          26,
          27,
          28,
          29,
          35
        ],
        "base_markers_to_reference": [
          {
            "number": 1,
            "label": "Living and dining area",
            "category": "area",
            "position_hint": "central shared zone immediately inside the entrance",
            "base_layer_decision": "base_structural_unit",
            "render_role": "not_applicable",
            "top_down_legibility": "not_applicable"
          },
          {
            "number": 5,
            "label": "Daughter bedroom",
            "category": "area",
            "position_hint": "private room at the far end of the central circulation",
            "base_layer_decision": "base_structural_unit",
            "render_role": "not_applicable",
            "top_down_legibility": "not_applicable"
          },
          {
            "number": 8,
            "label": "Small living window",
            "category": "opening",
            "position_hint": "exterior wall of the living area near the dining and kitchen zone",
            "base_layer_decision": "base_opening",
            "render_role": "not_applicable",
            "top_down_legibility": "not_applicable"
          },
          {
            "number": 9,
            "label": "Daughter bedroom door",
            "category": "opening",
            "position_hint": "between the central circulation and daughter bedroom",
            "base_layer_decision": "base_opening",
            "render_role": "not_applicable",
            "top_down_legibility": "not_applicable"
          },
          {
            "number": 14,
            "label": "Dining table",
            "category": "furniture",
            "position_hint": "living area beside the kitchen service zone",
            "base_layer_decision": "base_persistent_furniture",
            "render_role": "not_applicable",
            "top_down_legibility": "not_applicable"
          },
          {
            "number": 17,
            "label": "Daughter bed",
            "category": "furniture",
            "position_hint": "inside the daughter bedroom near the marked wall location",
            "base_layer_decision": "base_persistent_furniture",
            "render_role": "not_applicable",
            "top_down_legibility": "not_applicable"
          },
          {
            "number": 18,
            "label": "Daughter bedroom window",
            "category": "opening",
            "position_hint": "exterior wall of the daughter bedroom beside the bed corner",
            "base_layer_decision": "base_opening",
            "render_role": "not_applicable",
            "top_down_legibility": "not_applicable"
          },
          {
            "number": 21,
            "label": "Bedroom curtain",
            "category": "furniture",
            "position_hint": "single curtain run covering the daughter bedroom window",
            "base_layer_decision": "base_persistent_furniture",
            "render_role": "not_applicable",
            "top_down_legibility": "not_applicable"
          }
        ],
        "transient_markers_to_describe": [
          {
            "number": 30,
            "label": "Intruder footprint trail",
            "category": "prop",
            "position_hint": "continuous trail from the living area toward the daughter bedroom",
            "base_layer_decision": "state_overlay_plot_cue",
            "render_role": "not_applicable",
            "top_down_legibility": "not_applicable"
          },
          {
            "number": 31,
            "label": "Overturned dining chair",
            "category": "furniture",
            "position_hint": "one displaced chair beside the dining table",
            "base_layer_decision": "state_overlay_transient_object",
            "render_role": "not_applicable",
            "top_down_legibility": "not_applicable"
          },
          {
            "number": 32,
            "label": "Ransacked bedroom clutter pile",
            "category": "prop",
            "position_hint": "single localized pile on the daughter bedroom floor",
            "base_layer_decision": "state_overlay_transient_object",
            "render_role": "not_applicable",
            "top_down_legibility": "not_applicable"
          },
          {
            "number": 33,
            "label": "Bloodied photograph pinned in red circle",
            "category": "prop",
            "position_hint": "single contiguous wall display in the daughter bedroom",
            "base_layer_decision": "state_overlay_plot_cue",
            "render_role": "not_applicable",
            "top_down_legibility": "not_applicable"
          },
          {
            "number": 34,
            "label": "Living window open state",
            "category": "opening",
            "position_hint": "at the small living window",
            "base_layer_decision": "state_overlay_plot_cue",
            "render_role": "not_applicable",
            "top_down_legibility": "not_applicable"
          }
        ],
        "ignored_state_overlay_markers": [
          {
            "number": 22,
            "label": "Mutilated body behind curtain",
            "category": "prop",
            "position_hint": "single location behind the curtain in the daughter bedroom",
            "base_layer_decision": "state_overlay_transient_object",
            "render_role": "not_applicable",
            "top_down_legibility": "not_applicable"
          },
          {
            "number": 23,
            "label": "Blood pool",
            "category": "prop",
            "position_hint": "daughter bedroom floor beneath and immediately in front of the body",
            "base_layer_decision": "state_overlay_plot_cue",
            "render_role": "not_applicable",
            "top_down_legibility": "not_applicable"
          },
          {
            "number": 24,
            "label": "Bloody footprint trail",
            "category": "prop",
            "position_hint": "continuous trail across the daughter bedroom floor toward the curtain",
            "base_layer_decision": "state_overlay_plot_cue",
            "render_role": "not_applicable",
            "top_down_legibility": "not_applicable"
          },
          {
            "number": 25,
            "label": "Red wall circle above bed",
            "category": "prop",
            "position_hint": "single wall location directly above the daughter bed",
            "base_layer_decision": "state_overlay_plot_cue",
            "render_role": "not_applicable",
            "top_down_legibility": "not_applicable"
          },
          {
            "number": 26,
            "label": "Crumpled old photograph",
            "category": "prop",
            "position_hint": "in the victim's hand at the curtain corner",
            "base_layer_decision": "state_overlay_transient_object",
            "render_role": "not_applicable",
            "top_down_legibility": "not_applicable"
          },
          {
            "number": 27,
            "label": "Two tea cups, one overturned",
            "category": "prop",
            "position_hint": "single grouped placement on the dining table",
            "base_layer_decision": "state_overlay_transient_object",
            "render_role": "not_applicable",
            "top_down_legibility": "not_applicable"
          },
          {
            "number": 28,
            "label": "Bathroom red circle apparition",
            "category": "prop",
            "position_hint": "single bathroom wall location visible near the mirror or washbasin",
            "base_layer_decision": "state_overlay_plot_cue",
            "render_role": "not_applicable",
            "top_down_legibility": "not_applicable"
          },
          {
            "number": 29,
            "label": "Melting face in family photograph",
            "category": "prop",
            "position_hint": "single framed family photograph on the dining table",
            "base_layer_decision": "state_overlay_plot_cue",
            "render_role": "not_applicable",
            "top_down_legibility": "not_applicable"
          },
          {
            "number": 35,
            "label": "Entrance door ajar state",
            "category": "opening",
            "position_hint": "at the iron entrance doorway",
            "base_layer_decision": "state_overlay_plot_cue",
            "render_role": "not_applicable",
            "top_down_legibility": "not_applicable"
          }
        ],
        "target_unit_marker_numbers": [
          1,
          5
        ],
        "dominant_target_unit_marker_number": null,
        "clean_background_expected": false,
        "diagnostics": [
          "multiple base_structural_unit markers in use_numbered_elements ([1, 5]); dominant_target_unit_marker_number left empty (W19B-1 lock — no lexical disambiguation)"
        ]
      },
      "L04B04": {
        "bg_id": "L04B04",
        "fp_id": "fp_l04_main_interior",
        "use_numbered_elements": [
          1,
          2,
          3,
          7,
          8,
          10,
          11,
          12,
          13,
          14,
          15,
          35
        ],
        "ignore_numbered_elements": [
          22,
          23,
          24,
          25,
          26,
          27,
          28,
          29,
          30,
          31,
          32,
          33,
          34
        ],
        "base_markers_to_reference": [
          {
            "number": 1,
            "label": "Living and dining area",
            "category": "area",
            "position_hint": "central shared zone immediately inside the entrance",
            "base_layer_decision": "base_structural_unit",
            "render_role": "not_applicable",
            "top_down_legibility": "not_applicable"
          },
          {
            "number": 2,
            "label": "Entry threshold",
            "category": "area",
            "position_hint": "southwest edge of the unit inside the iron entrance door",
            "base_layer_decision": "base_structural_unit",
            "render_role": "not_applicable",
            "top_down_legibility": "not_applicable"
          },
          {
            "number": 3,
            "label": "Kitchen service zone",
            "category": "area",
            "position_hint": "along one side of the living area, adjacent to the dining table",
            "base_layer_decision": "base_structural_unit",
            "render_role": "not_applicable",
            "top_down_legibility": "not_applicable"
          },
          {
            "number": 7,
            "label": "Iron entrance door",
            "category": "opening",
            "position_hint": "exterior wall at the entry threshold",
            "base_layer_decision": "base_opening",
            "render_role": "not_applicable",
            "top_down_legibility": "not_applicable"
          },
          {
            "number": 8,
            "label": "Small living window",
            "category": "opening",
            "position_hint": "exterior wall of the living area near the dining and kitchen zone",
            "base_layer_decision": "base_opening",
            "render_role": "not_applicable",
            "top_down_legibility": "not_applicable"
          },
          {
            "number": 10,
            "label": "Mother bedroom door",
            "category": "opening",
            "position_hint": "between the living circulation and mother bedroom",
            "base_layer_decision": "base_opening",
            "render_role": "not_applicable",
            "top_down_legibility": "not_applicable"
          },
          {
            "number": 11,
            "label": "Bathroom door",
            "category": "opening",
            "position_hint": "between the central circulation and bathroom",
            "base_layer_decision": "base_opening",
            "render_role": "not_applicable",
            "top_down_legibility": "not_applicable"
          },
          {
            "number": 12,
            "label": "Kitchen sink and faucet",
            "category": "furniture",
            "position_hint": "fixed counter run in the kitchen service zone",
            "base_layer_decision": "base_persistent_fixture",
            "render_role": "not_applicable",
            "top_down_legibility": "not_applicable"
          },
          {
            "number": 13,
            "label": "Kitchen stovetop",
            "category": "furniture",
            "position_hint": "same kitchen counter run, separated from the sink",
            "base_layer_decision": "base_persistent_fixture",
            "render_role": "not_applicable",
            "top_down_legibility": "not_applicable"
          },
          {
            "number": 14,
            "label": "Dining table",
            "category": "furniture",
            "position_hint": "living area beside the kitchen service zone",
            "base_layer_decision": "base_persistent_furniture",
            "render_role": "not_applicable",
            "top_down_legibility": "not_applicable"
          },
          {
            "number": 15,
            "label": "Television",
            "category": "furniture",
            "position_hint": "against the living-area wall facing the dining side",
            "base_layer_decision": "base_persistent_furniture",
            "render_role": "not_applicable",
            "top_down_legibility": "not_applicable"
          }
        ],
        "transient_markers_to_describe": [
          {
            "number": 35,
            "label": "Entrance door ajar state",
            "category": "opening",
            "position_hint": "at the iron entrance doorway",
            "base_layer_decision": "state_overlay_plot_cue",
            "render_role": "not_applicable",
            "top_down_legibility": "not_applicable"
          }
        ],
        "ignored_state_overlay_markers": [
          {
            "number": 22,
            "label": "Mutilated body behind curtain",
            "category": "prop",
            "position_hint": "single location behind the curtain in the daughter bedroom",
            "base_layer_decision": "state_overlay_transient_object",
            "render_role": "not_applicable",
            "top_down_legibility": "not_applicable"
          },
          {
            "number": 23,
            "label": "Blood pool",
            "category": "prop",
            "position_hint": "daughter bedroom floor beneath and immediately in front of the body",
            "base_layer_decision": "state_overlay_plot_cue",
            "render_role": "not_applicable",
            "top_down_legibility": "not_applicable"
          },
          {
            "number": 24,
            "label": "Bloody footprint trail",
            "category": "prop",
            "position_hint": "continuous trail across the daughter bedroom floor toward the curtain",
            "base_layer_decision": "state_overlay_plot_cue",
            "render_role": "not_applicable",
            "top_down_legibility": "not_applicable"
          },
          {
            "number": 25,
            "label": "Red wall circle above bed",
            "category": "prop",
            "position_hint": "single wall location directly above the daughter bed",
            "base_layer_decision": "state_overlay_plot_cue",
            "render_role": "not_applicable",
            "top_down_legibility": "not_applicable"
          },
          {
            "number": 26,
            "label": "Crumpled old photograph",
            "category": "prop",
            "position_hint": "in the victim's hand at the curtain corner",
            "base_layer_decision": "state_overlay_transient_object",
            "render_role": "not_applicable",
            "top_down_legibility": "not_applicable"
          },
          {
            "number": 27,
            "label": "Two tea cups, one overturned",
            "category": "prop",
            "position_hint": "single grouped placement on the dining table",
            "base_layer_decision": "state_overlay_transient_object",
            "render_role": "not_applicable",
            "top_down_legibility": "not_applicable"
          },
          {
            "number": 28,
            "label": "Bathroom red circle apparition",
            "category": "prop",
            "position_hint": "single bathroom wall location visible near the mirror or washbasin",
            "base_layer_decision": "state_overlay_plot_cue",
            "render_role": "not_applicable",
            "top_down_legibility": "not_applicable"
          },
          {
            "number": 29,
            "label": "Melting face in family photograph",
            "category": "prop",
            "position_hint": "single framed family photograph on the dining table",
            "base_layer_decision": "state_overlay_plot_cue",
            "render_role": "not_applicable",
            "top_down_legibility": "not_applicable"
          },
          {
            "number": 30,
            "label": "Intruder footprint trail",
            "category": "prop",
            "position_hint": "continuous trail from the living area toward the daughter bedroom",
            "base_layer_decision": "state_overlay_plot_cue",
            "render_role": "not_applicable",
            "top_down_legibility": "not_applicable"
          },
          {
            "number": 31,
            "label": "Overturned dining chair",
            "category": "furniture",
            "position_hint": "one displaced chair beside the dining table",
            "base_layer_decision": "state_overlay_transient_object",
            "render_role": "not_applicable",
            "top_down_legibility": "not_applicable"
          },
          {
            "number": 32,
            "label": "Ransacked bedroom clutter pile",
            "category": "prop",
            "position_hint": "single localized pile on the daughter bedroom floor",
            "base_layer_decision": "state_overlay_transient_object",
            "render_role": "not_applicable",
            "top_down_legibility": "not_applicable"
          },
          {
            "number": 33,
            "label": "Bloodied photograph pinned in red circle",
            "category": "prop",
            "position_hint": "single contiguous wall display in the daughter bedroom",
            "base_layer_decision": "state_overlay_plot_cue",
            "render_role": "not_applicable",
            "top_down_legibility": "not_applicable"
          },
          {
            "number": 34,
            "label": "Living window open state",
            "category": "opening",
            "position_hint": "at the small living window",
            "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)"
        ]
      },
      "L10B03": {
        "bg_id": "L10B03",
        "fp_id": "fp_l10_exterior_entry",
        "use_numbered_elements": [
          1,
          2,
          3,
          4,
          6
        ],
        "ignore_numbered_elements": [],
        "base_markers_to_reference": [
          {
            "number": 1,
            "label": "rooftop entrance landing",
            "category": "area",
            "position_hint": "center of the exterior landing immediately outside the rooftop room",
            "base_layer_decision": "base_structural_unit",
            "render_role": "not_applicable",
            "top_down_legibility": "not_applicable"
          },
          {
            "number": 2,
            "label": "interior threshold zone",
            "category": "area",
            "position_hint": "inside the rooftop room, directly beyond the entrance door",
            "base_layer_decision": "base_structural_unit",
            "render_role": "not_applicable",
            "top_down_legibility": "not_applicable"
          },
          {
            "number": 3,
            "label": "exterior stairhead",
            "category": "area",
            "position_hint": "south side of the landing, terminating at the rooftop level",
            "base_layer_decision": "base_structural_unit",
            "render_role": "not_applicable",
            "top_down_legibility": "not_applicable"
          },
          {
            "number": 4,
            "label": "iron entrance door",
            "category": "opening",
            "position_hint": "wall opening between the rooftop landing and interior threshold zone",
            "base_layer_decision": "base_opening",
            "render_role": "not_applicable",
            "top_down_legibility": "not_applicable"
          }
        ],
        "transient_markers_to_describe": [
          {
            "number": 6,
            "label": "iron door left half open",
            "category": "opening",
            "position_hint": "at the iron entrance door between the landing and dark interior",
            "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)"
        ]
      },
      "L10B02": {
        "bg_id": "L10B02",
        "fp_id": "fp_l10_exterior_stairs",
        "use_numbered_elements": [
          1,
          2,
          3,
          4,
          5,
          6,
          7,
          8,
          9,
          10,
          11
        ],
        "ignore_numbered_elements": [],
        "base_markers_to_reference": [
          {
            "number": 1,
            "label": "Rear yard approach",
            "category": "area",
            "position_hint": "south end of the diagram at the foot of the stair structure",
            "base_layer_decision": "base_structural_unit",
            "render_role": "not_applicable",
            "top_down_legibility": "not_applicable"
          },
          {
            "number": 2,
            "label": "Lower stair landing",
            "category": "area",
            "position_hint": "north edge of the rear yard approach, directly before the first flight",
            "base_layer_decision": "base_structural_unit",
            "render_role": "not_applicable",
            "top_down_legibility": "not_applicable"
          },
          {
            "number": 3,
            "label": "First stair flight",
            "category": "area",
            "position_hint": "west side of the stair footprint, ascending north from the lower landing",
            "base_layer_decision": "base_structural_unit",
            "render_role": "not_applicable",
            "top_down_legibility": "not_applicable"
          },
          {
            "number": 4,
            "label": "Middle turning landing",
            "category": "area",
            "position_hint": "northwest corner between the first and second stair flights",
            "base_layer_decision": "base_structural_unit",
            "render_role": "not_applicable",
            "top_down_legibility": "not_applicable"
          },
          {
            "number": 5,
            "label": "Second stair flight",
            "category": "area",
            "position_hint": "central portion of the stair footprint, returning south from the middle landing",
            "base_layer_decision": "base_structural_unit",
            "render_role": "not_applicable",
            "top_down_legibility": "not_applicable"
          },
          {
            "number": 6,
            "label": "Upper turning landing",
            "category": "area",
            "position_hint": "south-central portion of the stair footprint between the second and final flights",
            "base_layer_decision": "base_structural_unit",
            "render_role": "not_applicable",
            "top_down_legibility": "not_applicable"
          },
          {
            "number": 7,
            "label": "Final stair flight",
            "category": "area",
            "position_hint": "east side of the stair footprint, ascending north toward the rooftop",
            "base_layer_decision": "base_structural_unit",
            "render_role": "not_applicable",
            "top_down_legibility": "not_applicable"
          },
          {
            "number": 8,
            "label": "Rooftop threshold landing",
            "category": "area",
            "position_hint": "northeast end of the stair sequence outside the rooftop room",
            "base_layer_decision": "base_structural_unit",
            "render_role": "not_applicable",
            "top_down_legibility": "not_applicable"
          },
          {
            "number": 9,
            "label": "Rooftop-room steel door",
            "category": "opening",
            "position_hint": "east wall beside the rooftop threshold landing",
            "base_layer_decision": "base_opening",
            "render_role": "not_applicable",
            "top_down_legibility": "not_applicable"
          },
          {
            "number": 10,
            "label": "Exterior stair guardrail",
            "category": "prop",
            "position_hint": "continuous exposed outer edge of the switchback stair structure",
            "base_layer_decision": "base_structural_unit",
            "render_role": "not_applicable",
            "top_down_legibility": "not_applicable"
          },
          {
            "number": 11,
            "label": "Villa exterior wall",
            "category": "area",
            "position_hint": "continuous inner edge bordering the stair flights and rooftop landing",
            "base_layer_decision": "base_structural_unit",
            "render_role": "not_applicable",
            "top_down_legibility": "not_applicable"
          }
        ],
        "transient_markers_to_describe": [],
        "ignored_state_overlay_markers": [],
        "target_unit_marker_numbers": [
          1,
          2,
          3,
          4,
          5,
          6,
          7,
          8,
          10,
          11
        ],
        "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, 7, 8, 10, 11]); dominant_target_unit_marker_number left empty (W19B-1 lock — no lexical disambiguation)"
        ]
      },
      "L10B01": {
        "bg_id": "L10B01",
        "fp_id": "fp_l10_villa_yard",
        "use_numbered_elements": [
          1,
          2,
          3,
          4,
          5,
          6,
          7,
          8,
          9,
          10,
          11,
          12
        ],
        "ignore_numbered_elements": [],
        "base_markers_to_reference": [
          {
            "number": 1,
            "label": "multi-family building footprint",
            "category": "area",
            "position_hint": "north and east side of the lot, bordering the shared yard",
            "base_layer_decision": "base_structural_unit",
            "render_role": "not_applicable",
            "top_down_legibility": "not_applicable"
          },
          {
            "number": 2,
            "label": "shared yard",
            "category": "area",
            "position_hint": "central open area between the street gate, building facade and exterior stair",
            "base_layer_decision": "base_structural_unit",
            "render_role": "not_applicable",
            "top_down_legibility": "not_applicable"
          },
          {
            "number": 3,
            "label": "street pedestrian gate",
            "category": "opening",
            "position_hint": "south boundary of the yard, opening toward the street",
            "base_layer_decision": "base_opening",
            "render_role": "not_applicable",
            "top_down_legibility": "not_applicable"
          },
          {
            "number": 4,
            "label": "bicycle parking corner",
            "category": "area",
            "position_hint": "northwest rear corner of the shared yard",
            "base_layer_decision": "base_structural_unit",
            "render_role": "not_applicable",
            "top_down_legibility": "not_applicable"
          },
          {
            "number": 5,
            "label": "exterior roof stair",
            "category": "area",
            "position_hint": "northeast side of the yard, attached to the building facade",
            "base_layer_decision": "base_structural_unit",
            "render_role": "not_applicable",
            "top_down_legibility": "not_applicable"
          },
          {
            "number": 6,
            "label": "police arrival apron",
            "category": "area",
            "position_hint": "southwest side beside the street gate and outside edge of the yard",
            "base_layer_decision": "base_structural_unit",
            "render_role": "not_applicable",
            "top_down_legibility": "not_applicable"
          }
        ],
        "transient_markers_to_describe": [
          {
            "number": 7,
            "label": "parked bicycle",
            "category": "prop",
            "position_hint": "single spot inside the bicycle parking corner at number 4",
            "base_layer_decision": "state_overlay_transient_object",
            "render_role": "not_applicable",
            "top_down_legibility": "not_applicable"
          },
          {
            "number": 8,
            "label": "police vehicle",
            "category": "prop",
            "position_hint": "single vehicle position on the arrival apron at number 6, angled toward the gate",
            "base_layer_decision": "state_overlay_transient_object",
            "render_role": "not_applicable",
            "top_down_legibility": "not_applicable"
          },
          {
            "number": 9,
            "label": "shocked resident",
            "category": "prop",
            "position_hint": "central yard below the lower end of the exterior stair",
            "base_layer_decision": "state_overlay_transient_object",
            "render_role": "not_applicable",
            "top_down_legibility": "not_applicable"
          },
          {
            "number": 10,
            "label": "lead arriving officer",
            "category": "prop",
            "position_hint": "between the police vehicle and the shocked resident",
            "base_layer_decision": "state_overlay_transient_object",
            "render_role": "not_applicable",
            "top_down_legibility": "not_applicable"
          },
          {
            "number": 11,
            "label": "second arriving officer",
            "category": "prop",
            "position_hint": "near the lower stair landing, behind the lead officer",
            "base_layer_decision": "state_overlay_transient_object",
            "render_role": "not_applicable",
            "top_down_legibility": "not_applicable"
          },
          {
            "number": 12,
            "label": "emergency light wash",
            "category": "prop",
            "position_hint": "single localized pool around the police vehicle on the arrival apron",
            "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,
          4,
          5,
          6
        ],
        "dominant_target_unit_marker_number": null,
        "clean_background_expected": false,
        "diagnostics": [
          "multiple base_structural_unit markers in use_numbered_elements ([1, 2, 4, 5, 6]); dominant_target_unit_marker_number left empty (W19B-1 lock — no lexical disambiguation)"
        ]
      },
      "L08B04": {
        "bg_id": "L08B04",
        "fp_id": "fp_l08_mart_main",
        "use_numbered_elements": [
          1,
          2,
          3,
          4,
          5,
          6,
          7,
          8,
          9,
          10,
          11,
          12,
          13,
          16
        ],
        "ignore_numbered_elements": [],
        "base_markers_to_reference": [
          {
            "number": 1,
            "label": "main sales floor",
            "category": "area",
            "position_hint": "large central and northern shared zone",
            "base_layer_decision": "base_structural_unit",
            "render_role": "not_applicable",
            "top_down_legibility": "not_applicable"
          },
          {
            "number": 2,
            "label": "entrance vestibule",
            "category": "area",
            "position_hint": "center of the south street-facing threshold",
            "base_layer_decision": "base_structural_unit",
            "render_role": "not_applicable",
            "top_down_legibility": "not_applicable"
          },
          {
            "number": 3,
            "label": "automatic sliding entrance",
            "category": "opening",
            "position_hint": "south exterior wall of the entrance vestibule",
            "base_layer_decision": "base_opening",
            "render_role": "not_applicable",
            "top_down_legibility": "not_applicable"
          },
          {
            "number": 4,
            "label": "checkout service zone",
            "category": "area",
            "position_hint": "southeast side of the sales floor beside the entrance",
            "base_layer_decision": "base_structural_unit",
            "render_role": "not_applicable",
            "top_down_legibility": "not_applicable"
          },
          {
            "number": 5,
            "label": "checkout counter bank",
            "category": "furniture",
            "position_hint": "east side of the checkout service zone, aligned north to south",
            "base_layer_decision": "base_persistent_fixture",
            "render_role": "not_applicable",
            "top_down_legibility": "not_applicable"
          },
          {
            "number": 6,
            "label": "customer service counter",
            "category": "furniture",
            "position_hint": "northeast edge of the checkout service zone",
            "base_layer_decision": "base_persistent_fixture",
            "render_role": "not_applicable",
            "top_down_legibility": "not_applicable"
          },
          {
            "number": 7,
            "label": "refrigerated display case",
            "category": "furniture",
            "position_hint": "single continuous run along the north wall",
            "base_layer_decision": "base_persistent_fixture",
            "render_role": "not_applicable",
            "top_down_legibility": "not_applicable"
          },
          {
            "number": 8,
            "label": "freezer display case",
            "category": "furniture",
            "position_hint": "single continuous run along the west wall",
            "base_layer_decision": "base_persistent_fixture",
            "render_role": "not_applicable",
            "top_down_legibility": "not_applicable"
          },
          {
            "number": 9,
            "label": "western shelf run",
            "category": "furniture",
            "position_hint": "west-central sales floor, oriented north to south",
            "base_layer_decision": "base_persistent_furniture",
            "render_role": "not_applicable",
            "top_down_legibility": "not_applicable"
          },
          {
            "number": 10,
            "label": "central shelf run",
            "category": "furniture",
            "position_hint": "center of the sales floor, oriented north to south",
            "base_layer_decision": "base_persistent_furniture",
            "render_role": "not_applicable",
            "top_down_legibility": "not_applicable"
          },
          {
            "number": 11,
            "label": "eastern shelf run",
            "category": "furniture",
            "position_hint": "east-central 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 table",
            "category": "furniture",
            "position_hint": "southwest sales floor near the main circulation route",
            "base_layer_decision": "base_persistent_furniture",
            "render_role": "not_applicable",
            "top_down_legibility": "not_applicable"
          },
          {
            "number": 13,
            "label": "promotional display island",
            "category": "furniture",
            "position_hint": "south-central sales floor beyond the entrance vestibule",
            "base_layer_decision": "base_persistent_furniture",
            "render_role": "not_applicable",
            "top_down_legibility": "not_applicable"
          },
          {
            "number": 16,
            "label": "entrance CCTV camera",
            "category": "prop",
            "position_hint": "southeast interior corner beside the entrance, aimed across the threshold",
            "base_layer_decision": "base_persistent_fixture",
            "render_role": "not_applicable",
            "top_down_legibility": "not_applicable"
          }
        ],
        "transient_markers_to_describe": [],
        "ignored_state_overlay_markers": [],
        "target_unit_marker_numbers": [
          1,
          2,
          4
        ],
        "dominant_target_unit_marker_number": null,
        "clean_background_expected": true,
        "diagnostics": [
          "multiple base_structural_unit markers in use_numbered_elements ([1, 2, 4]); dominant_target_unit_marker_number left empty (W19B-1 lock — no lexical disambiguation)"
        ]
      },
      "L13B01": {
        "bg_id": "L13B01",
        "fp_id": "fp_l13_admin_office",
        "use_numbered_elements": [
          1,
          2,
          3,
          4,
          5,
          6,
          7,
          8,
          9,
          10,
          11,
          12,
          13,
          14,
          15,
          16
        ],
        "ignore_numbered_elements": [],
        "base_markers_to_reference": [
          {
            "number": 1,
            "label": "security office room",
            "category": "area",
            "position_hint": "center of the compact rectangular office envelope",
            "base_layer_decision": "base_structural_unit",
            "render_role": "not_applicable",
            "top_down_legibility": "not_applicable"
          },
          {
            "number": 2,
            "label": "shared review zone",
            "category": "area",
            "position_hint": "central and south-central portion of the office",
            "base_layer_decision": "base_structural_unit",
            "render_role": "not_applicable",
            "top_down_legibility": "not_applicable"
          },
          {
            "number": 3,
            "label": "workstation service zone",
            "category": "area",
            "position_hint": "north side of the office in front of the CCTV monitor wall",
            "base_layer_decision": "base_structural_unit",
            "render_role": "not_applicable",
            "top_down_legibility": "not_applicable"
          },
          {
            "number": 4,
            "label": "entrance threshold zone",
            "category": "area",
            "position_hint": "southwest corner immediately inside the entrance",
            "base_layer_decision": "base_structural_unit",
            "render_role": "not_applicable",
            "top_down_legibility": "not_applicable"
          },
          {
            "number": 5,
            "label": "equipment utility zone",
            "category": "area",
            "position_hint": "northeast corner beside the monitor wall",
            "base_layer_decision": "base_structural_unit",
            "render_role": "not_applicable",
            "top_down_legibility": "not_applicable"
          },
          {
            "number": 6,
            "label": "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": 7,
            "label": "interior observation window",
            "category": "opening",
            "position_hint": "west wall north of the entrance door",
            "base_layer_decision": "base_opening",
            "render_role": "not_applicable",
            "top_down_legibility": "not_applicable"
          },
          {
            "number": 8,
            "label": "CCTV console desk",
            "category": "furniture",
            "position_hint": "north-central workstation zone, parallel to and facing the north wall",
            "base_layer_decision": "base_persistent_furniture",
            "render_role": "not_applicable",
            "top_down_legibility": "not_applicable"
          },
          {
            "number": 9,
            "label": "CCTV monitor bank",
            "category": "prop",
            "position_hint": "single contiguous monitor array centered on the north wall above the console",
            "base_layer_decision": "base_persistent_fixture",
            "render_role": "not_applicable",
            "top_down_legibility": "not_applicable"
          },
          {
            "number": 10,
            "label": "operator chair",
            "category": "furniture",
            "position_hint": "directly south of the CCTV console desk",
            "base_layer_decision": "base_persistent_furniture",
            "render_role": "not_applicable",
            "top_down_legibility": "not_applicable"
          },
          {
            "number": 11,
            "label": "left visitor chair",
            "category": "furniture",
            "position_hint": "central review zone, southwest of the operator chair and angled toward the monitor bank",
            "base_layer_decision": "base_persistent_furniture",
            "render_role": "not_applicable",
            "top_down_legibility": "not_applicable"
          },
          {
            "number": 12,
            "label": "right visitor chair",
            "category": "furniture",
            "position_hint": "central review zone, southeast of the operator chair and angled toward the monitor bank",
            "base_layer_decision": "base_persistent_furniture",
            "render_role": "not_applicable",
            "top_down_legibility": "not_applicable"
          },
          {
            "number": 13,
            "label": "secondary administration desk",
            "category": "furniture",
            "position_hint": "east wall, south of the equipment utility zone",
            "base_layer_decision": "base_persistent_furniture",
            "render_role": "not_applicable",
            "top_down_legibility": "not_applicable"
          },
          {
            "number": 14,
            "label": "secondary desktop monitor",
            "category": "prop",
            "position_hint": "single monitor centered on the secondary administration desk",
            "base_layer_decision": "base_persistent_fixture",
            "render_role": "not_applicable",
            "top_down_legibility": "not_applicable"
          },
          {
            "number": 15,
            "label": "security equipment rack",
            "category": "prop",
            "position_hint": "northeast equipment utility zone against the east wall",
            "base_layer_decision": "base_persistent_fixture",
            "render_role": "not_applicable",
            "top_down_legibility": "not_applicable"
          }
        ],
        "transient_markers_to_describe": [
          {
            "number": 16,
            "label": "abnormally dark male silhouette on CCTV screen",
            "category": "prop",
            "position_hint": "confined to one central screen within number 9; never present elsewhere in the office",
            "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,
          5
        ],
        "dominant_target_unit_marker_number": null,
        "clean_background_expected": false,
        "diagnostics": [
          "multiple base_structural_unit markers in use_numbered_elements ([1, 2, 3, 4, 5]); dominant_target_unit_marker_number left empty (W19B-1 lock — no lexical disambiguation)"
        ]
      },
      "L12B02": {
        "bg_id": "L12B02",
        "fp_id": "fp_police_office_main",
        "use_numbered_elements": [
          1,
          2,
          4,
          5,
          6,
          7,
          8,
          9,
          11,
          12,
          13
        ],
        "ignore_numbered_elements": [
          14,
          15
        ],
        "base_markers_to_reference": [
          {
            "number": 1,
            "label": "shared work area",
            "category": "area",
            "position_hint": "large central and northern portion of the office",
            "base_layer_decision": "base_structural_unit",
            "render_role": "not_applicable",
            "top_down_legibility": "not_applicable"
          },
          {
            "number": 2,
            "label": "entrance threshold",
            "category": "area",
            "position_hint": "southwest corner immediately inside the main exit door",
            "base_layer_decision": "base_structural_unit",
            "render_role": "not_applicable",
            "top_down_legibility": "not_applicable"
          },
          {
            "number": 4,
            "label": "main exit door",
            "category": "opening",
            "position_hint": "south wall at the southwest entrance threshold",
            "base_layer_decision": "base_opening",
            "render_role": "not_applicable",
            "top_down_legibility": "not_applicable"
          },
          {
            "number": 5,
            "label": "primary investigator desk",
            "category": "furniture",
            "position_hint": "east-central side of the shared work area",
            "base_layer_decision": "base_persistent_furniture",
            "render_role": "not_applicable",
            "top_down_legibility": "not_applicable"
          },
          {
            "number": 6,
            "label": "duty detective desk",
            "category": "furniture",
            "position_hint": "northeast side of the shared work area",
            "base_layer_decision": "base_persistent_furniture",
            "render_role": "not_applicable",
            "top_down_legibility": "not_applicable"
          },
          {
            "number": 7,
            "label": "desktop monitor",
            "category": "prop",
            "position_hint": "single monitor centered along the north edge of the duty detective desk",
            "base_layer_decision": "base_persistent_fixture",
            "render_role": "not_applicable",
            "top_down_legibility": "not_applicable"
          },
          {
            "number": 8,
            "label": "western shared desk",
            "category": "furniture",
            "position_hint": "west-central side of the shared work area",
            "base_layer_decision": "base_persistent_furniture",
            "render_role": "not_applicable",
            "top_down_legibility": "not_applicable"
          },
          {
            "number": 9,
            "label": "central shared desk",
            "category": "furniture",
            "position_hint": "center of the shared work area, separated from the western desk",
            "base_layer_decision": "base_persistent_furniture",
            "render_role": "not_applicable",
            "top_down_legibility": "not_applicable"
          },
          {
            "number": 11,
            "label": "north window run",
            "category": "opening",
            "position_hint": "single contiguous window run in the north wall above the shared work area",
            "base_layer_decision": "base_opening",
            "render_role": "not_applicable",
            "top_down_legibility": "not_applicable"
          },
          {
            "number": 12,
            "label": "east window run",
            "category": "opening",
            "position_hint": "single contiguous window run in the east wall between the desks and coffee niche",
            "base_layer_decision": "base_opening",
            "render_role": "not_applicable",
            "top_down_legibility": "not_applicable"
          }
        ],
        "transient_markers_to_describe": [
          {
            "number": 13,
            "label": "smartphone showing a contact number",
            "category": "prop",
            "position_hint": "temporarily held near the entrance-to-duty-desk path during the night request",
            "base_layer_decision": "state_overlay_transient_object",
            "render_role": "not_applicable",
            "top_down_legibility": "not_applicable"
          }
        ],
        "ignored_state_overlay_markers": [
          {
            "number": 14,
            "label": "spread homicide photographs",
            "category": "prop",
            "position_hint": "temporarily scattered across the top of the primary investigator desk",
            "base_layer_decision": "state_overlay_transient_object",
            "render_role": "not_applicable",
            "top_down_legibility": "not_applicable"
          },
          {
            "number": 15,
            "label": "GPS result on monitor",
            "category": "prop",
            "position_hint": "temporary location-tracking interface confined to the 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
        ],
        "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)"
        ]
      },
      "L12B01": {
        "bg_id": "L12B01",
        "fp_id": "fp_police_office_main",
        "use_numbered_elements": [
          1,
          4,
          5,
          6,
          7,
          8,
          9,
          10,
          11,
          12,
          14,
          15
        ],
        "ignore_numbered_elements": [
          13
        ],
        "base_markers_to_reference": [
          {
            "number": 1,
            "label": "shared work area",
            "category": "area",
            "position_hint": "large central and northern portion of the office",
            "base_layer_decision": "base_structural_unit",
            "render_role": "not_applicable",
            "top_down_legibility": "not_applicable"
          },
          {
            "number": 4,
            "label": "main exit door",
            "category": "opening",
            "position_hint": "south wall at the southwest entrance threshold",
            "base_layer_decision": "base_opening",
            "render_role": "not_applicable",
            "top_down_legibility": "not_applicable"
          },
          {
            "number": 5,
            "label": "primary investigator desk",
            "category": "furniture",
            "position_hint": "east-central side of the shared work area",
            "base_layer_decision": "base_persistent_furniture",
            "render_role": "not_applicable",
            "top_down_legibility": "not_applicable"
          },
          {
            "number": 6,
            "label": "duty detective desk",
            "category": "furniture",
            "position_hint": "northeast side of the shared work area",
            "base_layer_decision": "base_persistent_furniture",
            "render_role": "not_applicable",
            "top_down_legibility": "not_applicable"
          },
          {
            "number": 7,
            "label": "desktop monitor",
            "category": "prop",
            "position_hint": "single monitor centered along the north edge of the duty detective desk",
            "base_layer_decision": "base_persistent_fixture",
            "render_role": "not_applicable",
            "top_down_legibility": "not_applicable"
          },
          {
            "number": 8,
            "label": "western shared desk",
            "category": "furniture",
            "position_hint": "west-central side of the shared work area",
            "base_layer_decision": "base_persistent_furniture",
            "render_role": "not_applicable",
            "top_down_legibility": "not_applicable"
          },
          {
            "number": 9,
            "label": "central shared desk",
            "category": "furniture",
            "position_hint": "center of the shared work area, separated from the western desk",
            "base_layer_decision": "base_persistent_furniture",
            "render_role": "not_applicable",
            "top_down_legibility": "not_applicable"
          },
          {
            "number": 10,
            "label": "coffee counter",
            "category": "furniture",
            "position_hint": "against the east wall inside the coffee service niche",
            "base_layer_decision": "base_persistent_fixture",
            "render_role": "not_applicable",
            "top_down_legibility": "not_applicable"
          },
          {
            "number": 11,
            "label": "north window run",
            "category": "opening",
            "position_hint": "single contiguous window run in the north wall above the shared work area",
            "base_layer_decision": "base_opening",
            "render_role": "not_applicable",
            "top_down_legibility": "not_applicable"
          },
          {
            "number": 12,
            "label": "east window run",
            "category": "opening",
            "position_hint": "single contiguous window run in the east wall between the desks and coffee niche",
            "base_layer_decision": "base_opening",
            "render_role": "not_applicable",
            "top_down_legibility": "not_applicable"
          }
        ],
        "transient_markers_to_describe": [
          {
            "number": 14,
            "label": "spread homicide photographs",
            "category": "prop",
            "position_hint": "temporarily scattered across the top of the primary investigator desk",
            "base_layer_decision": "state_overlay_transient_object",
            "render_role": "not_applicable",
            "top_down_legibility": "not_applicable"
          },
          {
            "number": 15,
            "label": "GPS result on monitor",
            "category": "prop",
            "position_hint": "temporary location-tracking interface confined to the desktop monitor screen",
            "base_layer_decision": "state_overlay_plot_cue",
            "render_role": "not_applicable",
            "top_down_legibility": "not_applicable"
          }
        ],
        "ignored_state_overlay_markers": [
          {
            "number": 13,
            "label": "smartphone showing a contact number",
            "category": "prop",
            "position_hint": "temporarily held near the entrance-to-duty-desk path during the night request",
            "base_layer_decision": "state_overlay_transient_object",
            "render_role": "not_applicable",
            "top_down_legibility": "not_applicable"
          }
        ],
        "target_unit_marker_numbers": [
          1
        ],
        "dominant_target_unit_marker_number": 1,
        "clean_background_expected": false,
        "diagnostics": []
      },
      "L18B02": {
        "bg_id": "L18B02",
        "fp_id": "fp_l18_boat_deck",
        "use_numbered_elements": [
          1,
          2,
          3,
          4,
          5,
          6,
          7,
          8,
          9,
          11,
          12
        ],
        "ignore_numbered_elements": [],
        "base_markers_to_reference": [
          {
            "number": 1,
            "label": "open working deck",
            "category": "area",
            "position_hint": "central and aft portion of the boat, south of the wheelhouse",
            "base_layer_decision": "base_structural_unit",
            "render_role": "not_applicable",
            "top_down_legibility": "not_applicable"
          },
          {
            "number": 2,
            "label": "wheelhouse cabin",
            "category": "area",
            "position_hint": "forward portion of the boat, north of the open deck",
            "base_layer_decision": "base_structural_unit",
            "render_role": "not_applicable",
            "top_down_legibility": "not_applicable"
          },
          {
            "number": 3,
            "label": "entrance threshold",
            "category": "area",
            "position_hint": "center of the wheelhouse frontage between deck and cabin interior",
            "base_layer_decision": "base_structural_unit",
            "render_role": "not_applicable",
            "top_down_legibility": "not_applicable"
          },
          {
            "number": 4,
            "label": "port railing run",
            "category": "prop",
            "position_hint": "continuous west edge of the open working deck",
            "base_layer_decision": "base_structural_unit",
            "render_role": "not_applicable",
            "top_down_legibility": "not_applicable"
          },
          {
            "number": 5,
            "label": "starboard railing run",
            "category": "prop",
            "position_hint": "continuous east edge of the open working deck",
            "base_layer_decision": "base_structural_unit",
            "render_role": "not_applicable",
            "top_down_legibility": "not_applicable"
          },
          {
            "number": 6,
            "label": "stern railing run",
            "category": "prop",
            "position_hint": "continuous south edge of the open working deck",
            "base_layer_decision": "base_structural_unit",
            "render_role": "not_applicable",
            "top_down_legibility": "not_applicable"
          },
          {
            "number": 7,
            "label": "wheelhouse door",
            "category": "opening",
            "position_hint": "center of the south-facing wheelhouse frontage",
            "base_layer_decision": "base_opening",
            "render_role": "not_applicable",
            "top_down_legibility": "not_applicable"
          },
          {
            "number": 8,
            "label": "port frontage window",
            "category": "opening",
            "position_hint": "wheelhouse frontage immediately west of the entrance",
            "base_layer_decision": "base_opening",
            "render_role": "not_applicable",
            "top_down_legibility": "not_applicable"
          },
          {
            "number": 9,
            "label": "starboard frontage window",
            "category": "opening",
            "position_hint": "wheelhouse frontage immediately east of the entrance",
            "base_layer_decision": "base_opening",
            "render_role": "not_applicable",
            "top_down_legibility": "not_applicable"
          }
        ],
        "transient_markers_to_describe": [
          {
            "number": 11,
            "label": "paper map",
            "category": "prop",
            "position_hint": "temporarily held or placed within the aft working deck interaction area",
            "base_layer_decision": "state_overlay_transient_object",
            "render_role": "not_applicable",
            "top_down_legibility": "not_applicable"
          },
          {
            "number": 12,
            "label": "printed photograph",
            "category": "prop",
            "position_hint": "temporarily held within the aft working deck interaction area",
            "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,
          4,
          5,
          6
        ],
        "dominant_target_unit_marker_number": null,
        "clean_background_expected": false,
        "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)"
        ]
      },
      "L18B01": {
        "bg_id": "L18B01",
        "fp_id": "fp_l18_boat_deck",
        "use_numbered_elements": [
          1,
          2,
          3,
          4,
          5,
          7,
          8,
          9,
          10
        ],
        "ignore_numbered_elements": [
          11,
          12
        ],
        "base_markers_to_reference": [
          {
            "number": 1,
            "label": "open working deck",
            "category": "area",
            "position_hint": "central and aft portion of the boat, south of the wheelhouse",
            "base_layer_decision": "base_structural_unit",
            "render_role": "not_applicable",
            "top_down_legibility": "not_applicable"
          },
          {
            "number": 2,
            "label": "wheelhouse cabin",
            "category": "area",
            "position_hint": "forward portion of the boat, north of the open deck",
            "base_layer_decision": "base_structural_unit",
            "render_role": "not_applicable",
            "top_down_legibility": "not_applicable"
          },
          {
            "number": 3,
            "label": "entrance threshold",
            "category": "area",
            "position_hint": "center of the wheelhouse frontage between deck and cabin interior",
            "base_layer_decision": "base_structural_unit",
            "render_role": "not_applicable",
            "top_down_legibility": "not_applicable"
          },
          {
            "number": 4,
            "label": "port railing run",
            "category": "prop",
            "position_hint": "continuous west edge of the open working deck",
            "base_layer_decision": "base_structural_unit",
            "render_role": "not_applicable",
            "top_down_legibility": "not_applicable"
          },
          {
            "number": 5,
            "label": "starboard railing run",
            "category": "prop",
            "position_hint": "continuous east edge of the open working deck",
            "base_layer_decision": "base_structural_unit",
            "render_role": "not_applicable",
            "top_down_legibility": "not_applicable"
          },
          {
            "number": 7,
            "label": "wheelhouse door",
            "category": "opening",
            "position_hint": "center of the south-facing wheelhouse frontage",
            "base_layer_decision": "base_opening",
            "render_role": "not_applicable",
            "top_down_legibility": "not_applicable"
          },
          {
            "number": 8,
            "label": "port frontage window",
            "category": "opening",
            "position_hint": "wheelhouse frontage immediately west of the entrance",
            "base_layer_decision": "base_opening",
            "render_role": "not_applicable",
            "top_down_legibility": "not_applicable"
          },
          {
            "number": 9,
            "label": "starboard frontage window",
            "category": "opening",
            "position_hint": "wheelhouse frontage immediately east of the entrance",
            "base_layer_decision": "base_opening",
            "render_role": "not_applicable",
            "top_down_legibility": "not_applicable"
          },
          {
            "number": 10,
            "label": "helm console",
            "category": "furniture",
            "position_hint": "inside the wheelhouse, forward of and slightly starboard from the entrance",
            "base_layer_decision": "base_persistent_fixture",
            "render_role": "not_applicable",
            "top_down_legibility": "not_applicable"
          }
        ],
        "transient_markers_to_describe": [],
        "ignored_state_overlay_markers": [
          {
            "number": 11,
            "label": "paper map",
            "category": "prop",
            "position_hint": "temporarily held or placed within the aft working deck interaction area",
            "base_layer_decision": "state_overlay_transient_object",
            "render_role": "not_applicable",
            "top_down_legibility": "not_applicable"
          },
          {
            "number": 12,
            "label": "printed photograph",
            "category": "prop",
            "position_hint": "temporarily held within the aft working deck interaction area",
            "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
        ],
        "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]); dominant_target_unit_marker_number left empty (W19B-1 lock — no lexical disambiguation)"
        ]
      },
      "L19B01": {
        "bg_id": "L19B01",
        "fp_id": "fp_l19_wheelhouse",
        "use_numbered_elements": [
          1,
          2,
          3,
          4,
          5,
          6,
          7,
          8,
          9,
          10,
          11,
          12
        ],
        "ignore_numbered_elements": [],
        "base_markers_to_reference": [
          {
            "number": 1,
            "label": "wheelhouse operations zone",
            "category": "area",
            "position_hint": "central enclosed interior of the wheelhouse",
            "base_layer_decision": "base_structural_unit",
            "render_role": "not_applicable",
            "top_down_legibility": "not_applicable"
          },
          {
            "number": 2,
            "label": "aft doorway",
            "category": "opening",
            "position_hint": "center of the aft wall",
            "base_layer_decision": "base_opening",
            "render_role": "not_applicable",
            "top_down_legibility": "not_applicable"
          },
          {
            "number": 3,
            "label": "forward windshield run",
            "category": "opening",
            "position_hint": "single contiguous glazed run across the forward wall",
            "base_layer_decision": "base_opening",
            "render_role": "not_applicable",
            "top_down_legibility": "not_applicable"
          },
          {
            "number": 4,
            "label": "port side window",
            "category": "opening",
            "position_hint": "forward half of the port wall",
            "base_layer_decision": "base_opening",
            "render_role": "not_applicable",
            "top_down_legibility": "not_applicable"
          },
          {
            "number": 5,
            "label": "starboard side window",
            "category": "opening",
            "position_hint": "forward half of the starboard wall",
            "base_layer_decision": "base_opening",
            "render_role": "not_applicable",
            "top_down_legibility": "not_applicable"
          },
          {
            "number": 6,
            "label": "helm console",
            "category": "prop",
            "position_hint": "centered against the forward wall below the windshield",
            "base_layer_decision": "base_persistent_fixture",
            "render_role": "not_applicable",
            "top_down_legibility": "not_applicable"
          },
          {
            "number": 7,
            "label": "steering wheel",
            "category": "prop",
            "position_hint": "center of the helm console",
            "base_layer_decision": "base_persistent_fixture",
            "render_role": "not_applicable",
            "top_down_legibility": "not_applicable"
          },
          {
            "number": 8,
            "label": "throttle and navigation controls",
            "category": "prop",
            "position_hint": "starboard end of the helm console",
            "base_layer_decision": "base_persistent_fixture",
            "render_role": "not_applicable",
            "top_down_legibility": "not_applicable"
          },
          {
            "number": 9,
            "label": "helm chair",
            "category": "furniture",
            "position_hint": "immediately aft of the helm console",
            "base_layer_decision": "base_persistent_furniture",
            "render_role": "not_applicable",
            "top_down_legibility": "not_applicable"
          },
          {
            "number": 10,
            "label": "doorway threshold zone",
            "category": "area",
            "position_hint": "narrow interior strip immediately forward of the aft doorway",
            "base_layer_decision": "base_structural_unit",
            "render_role": "not_applicable",
            "top_down_legibility": "not_applicable"
          }
        ],
        "transient_markers_to_describe": [
          {
            "number": 11,
            "label": "dense circular wall markings",
            "category": "prop",
            "position_hint": "one contiguous exposed section of the starboard interior wall, aft of the side window",
            "base_layer_decision": "state_overlay_plot_cue",
            "render_role": "not_applicable",
            "top_down_legibility": "not_applicable"
          },
          {
            "number": 12,
            "label": "single red circle",
            "category": "prop",
            "position_hint": "starboard interior wall beside the dense circular markings",
            "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,
          10
        ],
        "dominant_target_unit_marker_number": null,
        "clean_background_expected": false,
        "diagnostics": [
          "multiple base_structural_unit markers in use_numbered_elements ([1, 10]); dominant_target_unit_marker_number left empty (W19B-1 lock — no lexical disambiguation)"
        ]
      }
    }
  },
  "step_id": "floor_plan_overlay_payload",
  "run_id": "ba0ac8f5-1d48-40eb-95ab-9a6231324cfe",
  "resolved_model": "gpt",
  "updated_at": "2026-07-18T06:31:03.694046+00:00",
  "project_config_snapshot": {}
}