{
  "status": "completed",
  "applicable_count": 1,
  "completed_count": 1,
  "failed_count": 0,
  "schema_version": 1,
  "config_hash": "441d5bef641a0569",
  "data": {
    "overlays": {
      "L11B01": {
        "bg_id": "L11B01",
        "fp_id": "fp_l11_exterior_site",
        "use_numbered_elements": [
          1,
          2,
          3,
          4,
          5,
          6,
          7,
          8,
          9,
          10,
          11,
          12,
          13,
          14,
          15,
          16,
          17,
          18,
          19
        ],
        "ignore_numbered_elements": [
          20
        ],
        "base_markers_to_reference": [
          {
            "number": 1,
            "label": "main villa footprint",
            "category": "area",
            "position_hint": "center of site, rectangular building mass behind the forecourt",
            "base_layer_decision": "base_structural_unit",
            "render_role": "not_applicable",
            "top_down_legibility": "not_applicable"
          },
          {
            "number": 2,
            "label": "rooftop dwelling",
            "category": "area",
            "position_hint": "north-central portion of the main villa roof",
            "base_layer_decision": "base_structural_unit",
            "render_role": "not_applicable",
            "top_down_legibility": "not_applicable"
          },
          {
            "number": 3,
            "label": "open roof terrace",
            "category": "area",
            "position_hint": "roof area surrounding the rooftop dwelling",
            "base_layer_decision": "base_structural_unit",
            "render_role": "not_applicable",
            "top_down_legibility": "not_applicable"
          },
          {
            "number": 4,
            "label": "front forecourt",
            "category": "area",
            "position_hint": "south of the main villa facade, between the entrance and alley gate",
            "base_layer_decision": "base_structural_unit",
            "render_role": "not_applicable",
            "top_down_legibility": "not_applicable"
          },
          {
            "number": 5,
            "label": "rear service yard",
            "category": "area",
            "position_hint": "narrow secluded strip immediately north of the main villa",
            "base_layer_decision": "base_structural_unit",
            "render_role": "not_applicable",
            "top_down_legibility": "not_applicable"
          },
          {
            "number": 6,
            "label": "access alley",
            "category": "area",
            "position_hint": "narrow contiguous alley running along the south edge and turning up the east side",
            "base_layer_decision": "base_structural_unit",
            "render_role": "not_applicable",
            "top_down_legibility": "not_applicable"
          },
          {
            "number": 7,
            "label": "west neighboring block",
            "category": "area",
            "position_hint": "immediately west of the main villa with a narrow separation gap",
            "base_layer_decision": "base_structural_unit",
            "render_role": "not_applicable",
            "top_down_legibility": "not_applicable"
          },
          {
            "number": 8,
            "label": "east neighboring block",
            "category": "area",
            "position_hint": "east of the villa across the narrow side of the access alley",
            "base_layer_decision": "base_structural_unit",
            "render_role": "not_applicable",
            "top_down_legibility": "not_applicable"
          },
          {
            "number": 9,
            "label": "north neighboring block",
            "category": "area",
            "position_hint": "beyond the rear service yard at the north site edge",
            "base_layer_decision": "base_structural_unit",
            "render_role": "not_applicable",
            "top_down_legibility": "not_applicable"
          },
          {
            "number": 10,
            "label": "main entrance door",
            "category": "opening",
            "position_hint": "south facade of the main villa, opening into the forecourt",
            "base_layer_decision": "base_opening",
            "render_role": "not_applicable",
            "top_down_legibility": "not_applicable"
          },
          {
            "number": 11,
            "label": "forecourt gate",
            "category": "opening",
            "position_hint": "southeast edge of the forecourt where it meets the alley",
            "base_layer_decision": "base_opening",
            "render_role": "not_applicable",
            "top_down_legibility": "not_applicable"
          },
          {
            "number": 12,
            "label": "common stair core",
            "category": "area",
            "position_hint": "west side of the main villa footprint, extending from entrance level to roof",
            "base_layer_decision": "base_structural_unit",
            "render_role": "not_applicable",
            "top_down_legibility": "not_applicable"
          },
          {
            "number": 13,
            "label": "rooftop metal door",
            "category": "opening",
            "position_hint": "south wall of the rooftop dwelling beside the stair landing",
            "base_layer_decision": "base_opening",
            "render_role": "not_applicable",
            "top_down_legibility": "not_applicable"
          },
          {
            "number": 14,
            "label": "left facade window",
            "category": "opening",
            "position_hint": "south facade, west of the main entrance",
            "base_layer_decision": "base_opening",
            "render_role": "not_applicable",
            "top_down_legibility": "not_applicable"
          },
          {
            "number": 15,
            "label": "right facade window",
            "category": "opening",
            "position_hint": "south facade, east of the main entrance",
            "base_layer_decision": "base_opening",
            "render_role": "not_applicable",
            "top_down_legibility": "not_applicable"
          },
          {
            "number": 16,
            "label": "rooftop dwelling window",
            "category": "opening",
            "position_hint": "east wall of the rooftop dwelling facing the open terrace",
            "base_layer_decision": "base_opening",
            "render_role": "not_applicable",
            "top_down_legibility": "not_applicable"
          },
          {
            "number": 17,
            "label": "roof water tank",
            "category": "prop",
            "position_hint": "northeast corner of the open roof terrace",
            "base_layer_decision": "base_persistent_fixture",
            "render_role": "not_applicable",
            "top_down_legibility": "not_applicable"
          },
          {
            "number": 18,
            "label": "rooftop drying platform",
            "category": "furniture",
            "position_hint": "west side of the open roof terrace",
            "base_layer_decision": "base_persistent_furniture",
            "render_role": "not_applicable",
            "top_down_legibility": "not_applicable"
          },
          {
            "number": 19,
            "label": "laundry line run",
            "category": "prop",
            "position_hint": "single straight run along the west parapet beside the drying platform",
            "base_layer_decision": "base_persistent_fixture",
            "render_role": "not_applicable",
            "top_down_legibility": "not_applicable"
          }
        ],
        "transient_markers_to_describe": [],
        "ignored_state_overlay_markers": [
          {
            "number": 20,
            "label": "arriving car",
            "category": "prop",
            "position_hint": "night state only, stopped in the alley immediately southeast of the forecourt gate",
            "base_layer_decision": "state_overlay_transient_object",
            "render_role": "not_applicable",
            "top_down_legibility": "not_applicable"
          }
        ],
        "target_unit_marker_numbers": [
          1,
          2,
          3,
          4,
          5,
          6,
          7,
          8,
          9,
          12
        ],
        "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, 9, 12]); dominant_target_unit_marker_number left empty (W19B-1 lock — no lexical disambiguation)"
        ]
      },
      "L11B04": {
        "bg_id": "L11B04",
        "fp_id": "fp_l11_rooftop_approach",
        "use_numbered_elements": [
          1,
          2,
          3,
          4,
          5,
          7,
          9
        ],
        "ignore_numbered_elements": [],
        "base_markers_to_reference": [
          {
            "number": 1,
            "label": "rooftop approach terrace",
            "category": "area",
            "position_hint": "central and southern circulation area between the stair landing and rooftop-room entrance",
            "base_layer_decision": "base_structural_unit",
            "render_role": "not_applicable",
            "top_down_legibility": "not_applicable"
          },
          {
            "number": 2,
            "label": "upper stair landing",
            "category": "area",
            "position_hint": "southwest corner beside the stairwell opening",
            "base_layer_decision": "base_structural_unit",
            "render_role": "not_applicable",
            "top_down_legibility": "not_applicable"
          },
          {
            "number": 3,
            "label": "rooftop room enclosure",
            "category": "area",
            "position_hint": "north side of the plan, forming the enclosed destination of the approach",
            "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-facing wall of the rooftop room, aligned with the upper stair landing",
            "base_layer_decision": "base_opening",
            "render_role": "not_applicable",
            "top_down_legibility": "not_applicable"
          },
          {
            "number": 5,
            "label": "small exterior window",
            "category": "opening",
            "position_hint": "south-facing rooftop-room wall, east of the iron entrance door",
            "base_layer_decision": "base_opening",
            "render_role": "not_applicable",
            "top_down_legibility": "not_applicable"
          },
          {
            "number": 7,
            "label": "west parapet segment",
            "category": "area",
            "position_hint": "west edge of the rooftop approach beside the stair landing",
            "base_layer_decision": "base_structural_unit",
            "render_role": "not_applicable",
            "top_down_legibility": "not_applicable"
          }
        ],
        "transient_markers_to_describe": [
          {
            "number": 9,
            "label": "half-open iron door state",
            "category": "opening",
            "position_hint": "at the iron entrance door on the south-facing rooftop-room wall",
            "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,
          7
        ],
        "dominant_target_unit_marker_number": null,
        "clean_background_expected": false,
        "diagnostics": [
          "multiple base_structural_unit markers in use_numbered_elements ([1, 2, 3, 7]); dominant_target_unit_marker_number left empty (W19B-1 lock — no lexical disambiguation)"
        ]
      },
      "L11B03": {
        "bg_id": "L11B03",
        "fp_id": "fp_l11_exterior_stairs",
        "use_numbered_elements": [
          1,
          2,
          3,
          4,
          5,
          6,
          7,
          8,
          9,
          10,
          14,
          15,
          16
        ],
        "ignore_numbered_elements": [],
        "base_markers_to_reference": [
          {
            "number": 1,
            "label": "ground threshold zone",
            "category": "area",
            "position_hint": "south end of the circulation route, between the alley and rear courtyard",
            "base_layer_decision": "base_structural_unit",
            "render_role": "not_applicable",
            "top_down_legibility": "not_applicable"
          },
          {
            "number": 2,
            "label": "rear courtyard",
            "category": "area",
            "position_hint": "south side of the villa footprint, immediately inside the ground entrance",
            "base_layer_decision": "base_structural_unit",
            "render_role": "not_applicable",
            "top_down_legibility": "not_applicable"
          },
          {
            "number": 3,
            "label": "courtyard access door",
            "category": "opening",
            "position_hint": "south boundary of the rear courtyard, opening toward the ground threshold",
            "base_layer_decision": "base_opening",
            "render_role": "not_applicable",
            "top_down_legibility": "not_applicable"
          },
          {
            "number": 4,
            "label": "exterior stair tower",
            "category": "area",
            "position_hint": "attached to the west side of the villa, forming one continuous switchback circulation footprint",
            "base_layer_decision": "base_structural_unit",
            "render_role": "not_applicable",
            "top_down_legibility": "not_applicable"
          },
          {
            "number": 5,
            "label": "ground stair entry",
            "category": "opening",
            "position_hint": "northwest corner of the rear courtyard at the foot of the exterior stair tower",
            "base_layer_decision": "base_opening",
            "render_role": "not_applicable",
            "top_down_legibility": "not_applicable"
          },
          {
            "number": 6,
            "label": "rooftop landing",
            "category": "area",
            "position_hint": "top end of the exterior stair tower, adjoining the rooftop terrace",
            "base_layer_decision": "base_structural_unit",
            "render_role": "not_applicable",
            "top_down_legibility": "not_applicable"
          },
          {
            "number": 7,
            "label": "rooftop terrace",
            "category": "area",
            "position_hint": "open roof area east of the rooftop landing and south of the rooftop room",
            "base_layer_decision": "base_structural_unit",
            "render_role": "not_applicable",
            "top_down_legibility": "not_applicable"
          },
          {
            "number": 8,
            "label": "rooftop residence",
            "category": "area",
            "position_hint": "north side of the rooftop terrace",
            "base_layer_decision": "base_structural_unit",
            "render_role": "not_applicable",
            "top_down_legibility": "not_applicable"
          },
          {
            "number": 9,
            "label": "iron entry door",
            "category": "opening",
            "position_hint": "south wall of the rooftop residence, facing the rooftop terrace and stair landing",
            "base_layer_decision": "base_opening",
            "render_role": "not_applicable",
            "top_down_legibility": "not_applicable"
          },
          {
            "number": 10,
            "label": "small rooftop window",
            "category": "opening",
            "position_hint": "east portion of the rooftop residence wall facing the terrace",
            "base_layer_decision": "base_opening",
            "render_role": "not_applicable",
            "top_down_legibility": "not_applicable"
          },
          {
            "number": 14,
            "label": "west parapet run",
            "category": "area",
            "position_hint": "single contiguous exposed west edge of the rooftop terrace beside the stair landing",
            "base_layer_decision": "base_structural_unit",
            "render_role": "not_applicable",
            "top_down_legibility": "not_applicable"
          }
        ],
        "transient_markers_to_describe": [
          {
            "number": 15,
            "label": "hastily parked bicycle",
            "category": "prop",
            "position_hint": "shadowed rear corner of the ground courtyard near the foot of the stairs",
            "base_layer_decision": "state_overlay_transient_object",
            "render_role": "not_applicable",
            "top_down_legibility": "not_applicable"
          },
          {
            "number": 16,
            "label": "arriving police vehicle",
            "category": "prop",
            "position_hint": "outside the ground entrance along the alley threshold",
            "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,
          4,
          6,
          7,
          8,
          14
        ],
        "dominant_target_unit_marker_number": null,
        "clean_background_expected": false,
        "diagnostics": [
          "multiple base_structural_unit markers in use_numbered_elements ([1, 2, 4, 6, 7, 8, 14]); dominant_target_unit_marker_number left empty (W19B-1 lock — no lexical disambiguation)"
        ]
      },
      "L11B02": {
        "bg_id": "L11B02",
        "fp_id": "fp_l11_exterior_site",
        "use_numbered_elements": [
          1,
          2,
          3,
          4,
          6,
          7,
          8,
          9,
          10,
          11,
          12,
          13,
          14,
          15,
          16,
          17,
          20
        ],
        "ignore_numbered_elements": [],
        "base_markers_to_reference": [
          {
            "number": 1,
            "label": "main villa footprint",
            "category": "area",
            "position_hint": "center of site, rectangular building mass behind the forecourt",
            "base_layer_decision": "base_structural_unit",
            "render_role": "not_applicable",
            "top_down_legibility": "not_applicable"
          },
          {
            "number": 2,
            "label": "rooftop dwelling",
            "category": "area",
            "position_hint": "north-central portion of the main villa roof",
            "base_layer_decision": "base_structural_unit",
            "render_role": "not_applicable",
            "top_down_legibility": "not_applicable"
          },
          {
            "number": 3,
            "label": "open roof terrace",
            "category": "area",
            "position_hint": "roof area surrounding the rooftop dwelling",
            "base_layer_decision": "base_structural_unit",
            "render_role": "not_applicable",
            "top_down_legibility": "not_applicable"
          },
          {
            "number": 4,
            "label": "front forecourt",
            "category": "area",
            "position_hint": "south of the main villa facade, between the entrance and alley gate",
            "base_layer_decision": "base_structural_unit",
            "render_role": "not_applicable",
            "top_down_legibility": "not_applicable"
          },
          {
            "number": 6,
            "label": "access alley",
            "category": "area",
            "position_hint": "narrow contiguous alley running along the south edge and turning up the east side",
            "base_layer_decision": "base_structural_unit",
            "render_role": "not_applicable",
            "top_down_legibility": "not_applicable"
          },
          {
            "number": 7,
            "label": "west neighboring block",
            "category": "area",
            "position_hint": "immediately west of the main villa with a narrow separation gap",
            "base_layer_decision": "base_structural_unit",
            "render_role": "not_applicable",
            "top_down_legibility": "not_applicable"
          },
          {
            "number": 8,
            "label": "east neighboring block",
            "category": "area",
            "position_hint": "east of the villa across the narrow side of the access alley",
            "base_layer_decision": "base_structural_unit",
            "render_role": "not_applicable",
            "top_down_legibility": "not_applicable"
          },
          {
            "number": 9,
            "label": "north neighboring block",
            "category": "area",
            "position_hint": "beyond the rear service yard at the north site edge",
            "base_layer_decision": "base_structural_unit",
            "render_role": "not_applicable",
            "top_down_legibility": "not_applicable"
          },
          {
            "number": 10,
            "label": "main entrance door",
            "category": "opening",
            "position_hint": "south facade of the main villa, opening into the forecourt",
            "base_layer_decision": "base_opening",
            "render_role": "not_applicable",
            "top_down_legibility": "not_applicable"
          },
          {
            "number": 11,
            "label": "forecourt gate",
            "category": "opening",
            "position_hint": "southeast edge of the forecourt where it meets the alley",
            "base_layer_decision": "base_opening",
            "render_role": "not_applicable",
            "top_down_legibility": "not_applicable"
          },
          {
            "number": 12,
            "label": "common stair core",
            "category": "area",
            "position_hint": "west side of the main villa footprint, extending from entrance level to roof",
            "base_layer_decision": "base_structural_unit",
            "render_role": "not_applicable",
            "top_down_legibility": "not_applicable"
          },
          {
            "number": 13,
            "label": "rooftop metal door",
            "category": "opening",
            "position_hint": "south wall of the rooftop dwelling beside the stair landing",
            "base_layer_decision": "base_opening",
            "render_role": "not_applicable",
            "top_down_legibility": "not_applicable"
          },
          {
            "number": 14,
            "label": "left facade window",
            "category": "opening",
            "position_hint": "south facade, west of the main entrance",
            "base_layer_decision": "base_opening",
            "render_role": "not_applicable",
            "top_down_legibility": "not_applicable"
          },
          {
            "number": 15,
            "label": "right facade window",
            "category": "opening",
            "position_hint": "south facade, east of the main entrance",
            "base_layer_decision": "base_opening",
            "render_role": "not_applicable",
            "top_down_legibility": "not_applicable"
          },
          {
            "number": 16,
            "label": "rooftop dwelling window",
            "category": "opening",
            "position_hint": "east wall of the rooftop dwelling facing the open terrace",
            "base_layer_decision": "base_opening",
            "render_role": "not_applicable",
            "top_down_legibility": "not_applicable"
          },
          {
            "number": 17,
            "label": "roof water tank",
            "category": "prop",
            "position_hint": "northeast corner of the open roof terrace",
            "base_layer_decision": "base_persistent_fixture",
            "render_role": "not_applicable",
            "top_down_legibility": "not_applicable"
          }
        ],
        "transient_markers_to_describe": [
          {
            "number": 20,
            "label": "arriving car",
            "category": "prop",
            "position_hint": "night state only, stopped in the alley immediately southeast of the forecourt gate",
            "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,
          6,
          7,
          8,
          9,
          12
        ],
        "dominant_target_unit_marker_number": null,
        "clean_background_expected": false,
        "diagnostics": [
          "multiple base_structural_unit markers in use_numbered_elements ([1, 2, 3, 4, 6, 7, 8, 9, 12]); dominant_target_unit_marker_number left empty (W19B-1 lock — no lexical disambiguation)"
        ]
      },
      "L03B02": {
        "bg_id": "L03B02",
        "fp_id": "fp_l03_rooftop_deck",
        "use_numbered_elements": [
          1,
          2,
          3,
          5,
          6,
          7,
          8,
          9,
          10,
          11,
          12,
          13,
          15
        ],
        "ignore_numbered_elements": [
          14
        ],
        "base_markers_to_reference": [
          {
            "number": 1,
            "label": "open rooftop deck",
            "category": "area",
            "position_hint": "central and southern portion of the roof around the rooftop dwelling",
            "base_layer_decision": "base_structural_unit",
            "render_role": "not_applicable",
            "top_down_legibility": "not_applicable"
          },
          {
            "number": 2,
            "label": "rooftop dwelling footprint",
            "category": "area",
            "position_hint": "northeast portion of the roof, with its main exterior facade facing south onto the deck",
            "base_layer_decision": "base_structural_unit",
            "render_role": "not_applicable",
            "top_down_legibility": "not_applicable"
          },
          {
            "number": 3,
            "label": "perimeter parapet",
            "category": "area",
            "position_hint": "single marker on the southwest segment of the continuous roof-edge parapet",
            "base_layer_decision": "base_structural_unit",
            "render_role": "not_applicable",
            "top_down_legibility": "not_applicable"
          },
          {
            "number": 5,
            "label": "rooftop water tank",
            "category": "prop",
            "position_hint": "northwest service corner, separated from the dwelling facade",
            "base_layer_decision": "base_persistent_fixture",
            "render_role": "not_applicable",
            "top_down_legibility": "not_applicable"
          },
          {
            "number": 6,
            "label": "metal entrance door",
            "category": "opening",
            "position_hint": "western half of the rooftop dwelling's south-facing facade",
            "base_layer_decision": "base_opening",
            "render_role": "not_applicable",
            "top_down_legibility": "not_applicable"
          },
          {
            "number": 7,
            "label": "exterior room window",
            "category": "opening",
            "position_hint": "eastern half of the rooftop dwelling's south-facing facade, beside the entrance door",
            "base_layer_decision": "base_opening",
            "render_role": "not_applicable",
            "top_down_legibility": "not_applicable"
          },
          {
            "number": 8,
            "label": "drying line",
            "category": "prop",
            "position_hint": "west side of the open deck, stretched as one contiguous line between two fixed posts",
            "base_layer_decision": "base_persistent_fixture",
            "render_role": "not_applicable",
            "top_down_legibility": "not_applicable"
          },
          {
            "number": 9,
            "label": "low drying platform",
            "category": "furniture",
            "position_hint": "center-left portion of the open deck beneath and near the drying line",
            "base_layer_decision": "base_persistent_furniture",
            "render_role": "not_applicable",
            "top_down_legibility": "not_applicable"
          }
        ],
        "transient_markers_to_describe": [
          {
            "number": 10,
            "label": "unlatched slightly open door state",
            "category": "opening",
            "position_hint": "at the metal entrance door during the windy night intrusion",
            "base_layer_decision": "state_overlay_plot_cue",
            "render_role": "not_applicable",
            "top_down_legibility": "not_applicable"
          },
          {
            "number": 11,
            "label": "obscured attack silhouette in window",
            "category": "prop",
            "position_hint": "confined to the illuminated exterior window during the night attack",
            "base_layer_decision": "state_overlay_plot_cue",
            "render_role": "not_applicable",
            "top_down_legibility": "not_applicable"
          },
          {
            "number": 12,
            "label": "windblown dried leaves",
            "category": "prop",
            "position_hint": "around the low platform and crossing the deck toward the entrance during the windy night",
            "base_layer_decision": "state_overlay_transient_object",
            "render_role": "not_applicable",
            "top_down_legibility": "not_applicable"
          },
          {
            "number": 13,
            "label": "door-gap flyer",
            "category": "prop",
            "position_hint": "caught at the lower edge of the metal entrance door during the intrusion",
            "base_layer_decision": "state_overlay_transient_object",
            "render_role": "not_applicable",
            "top_down_legibility": "not_applicable"
          },
          {
            "number": 15,
            "label": "unidentified intruder shoes and long silhouette",
            "category": "prop",
            "position_hint": "on the deck immediately in front of the metal entrance door during the night intrusion",
            "base_layer_decision": "state_overlay_plot_cue",
            "render_role": "not_applicable",
            "top_down_legibility": "not_applicable"
          }
        ],
        "ignored_state_overlay_markers": [
          {
            "number": 14,
            "label": "black cat",
            "category": "prop",
            "position_hint": "on the south parapet, looking toward the illuminated exterior window at dawn",
            "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_deck",
        "use_numbered_elements": [
          1,
          2,
          3,
          5,
          7,
          8,
          9,
          14
        ],
        "ignore_numbered_elements": [
          10,
          11,
          12,
          13,
          15
        ],
        "base_markers_to_reference": [
          {
            "number": 1,
            "label": "open rooftop deck",
            "category": "area",
            "position_hint": "central and southern portion of the roof around the rooftop dwelling",
            "base_layer_decision": "base_structural_unit",
            "render_role": "not_applicable",
            "top_down_legibility": "not_applicable"
          },
          {
            "number": 2,
            "label": "rooftop dwelling footprint",
            "category": "area",
            "position_hint": "northeast portion of the roof, with its main exterior facade facing south onto the deck",
            "base_layer_decision": "base_structural_unit",
            "render_role": "not_applicable",
            "top_down_legibility": "not_applicable"
          },
          {
            "number": 3,
            "label": "perimeter parapet",
            "category": "area",
            "position_hint": "single marker on the southwest segment of the continuous roof-edge parapet",
            "base_layer_decision": "base_structural_unit",
            "render_role": "not_applicable",
            "top_down_legibility": "not_applicable"
          },
          {
            "number": 5,
            "label": "rooftop water tank",
            "category": "prop",
            "position_hint": "northwest service corner, separated from the dwelling facade",
            "base_layer_decision": "base_persistent_fixture",
            "render_role": "not_applicable",
            "top_down_legibility": "not_applicable"
          },
          {
            "number": 7,
            "label": "exterior room window",
            "category": "opening",
            "position_hint": "eastern half of the rooftop dwelling's south-facing facade, beside the entrance door",
            "base_layer_decision": "base_opening",
            "render_role": "not_applicable",
            "top_down_legibility": "not_applicable"
          },
          {
            "number": 8,
            "label": "drying line",
            "category": "prop",
            "position_hint": "west side of the open deck, stretched as one contiguous line between two fixed posts",
            "base_layer_decision": "base_persistent_fixture",
            "render_role": "not_applicable",
            "top_down_legibility": "not_applicable"
          },
          {
            "number": 9,
            "label": "low drying platform",
            "category": "furniture",
            "position_hint": "center-left portion of the open deck beneath and near the drying line",
            "base_layer_decision": "base_persistent_furniture",
            "render_role": "not_applicable",
            "top_down_legibility": "not_applicable"
          }
        ],
        "transient_markers_to_describe": [
          {
            "number": 14,
            "label": "black cat",
            "category": "prop",
            "position_hint": "on the south parapet, looking toward the illuminated exterior window at dawn",
            "base_layer_decision": "state_overlay_transient_object",
            "render_role": "not_applicable",
            "top_down_legibility": "not_applicable"
          }
        ],
        "ignored_state_overlay_markers": [
          {
            "number": 10,
            "label": "unlatched slightly open door state",
            "category": "opening",
            "position_hint": "at the metal entrance door during the windy night intrusion",
            "base_layer_decision": "state_overlay_plot_cue",
            "render_role": "not_applicable",
            "top_down_legibility": "not_applicable"
          },
          {
            "number": 11,
            "label": "obscured attack silhouette in window",
            "category": "prop",
            "position_hint": "confined to the illuminated exterior window during the night attack",
            "base_layer_decision": "state_overlay_plot_cue",
            "render_role": "not_applicable",
            "top_down_legibility": "not_applicable"
          },
          {
            "number": 12,
            "label": "windblown dried leaves",
            "category": "prop",
            "position_hint": "around the low platform and crossing the deck toward the entrance during the windy night",
            "base_layer_decision": "state_overlay_transient_object",
            "render_role": "not_applicable",
            "top_down_legibility": "not_applicable"
          },
          {
            "number": 13,
            "label": "door-gap flyer",
            "category": "prop",
            "position_hint": "caught at the lower edge of the metal entrance door during the intrusion",
            "base_layer_decision": "state_overlay_transient_object",
            "render_role": "not_applicable",
            "top_down_legibility": "not_applicable"
          },
          {
            "number": 15,
            "label": "unidentified intruder shoes and long silhouette",
            "category": "prop",
            "position_hint": "on the deck immediately in front of the metal entrance door during the night intrusion",
            "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_whole_interior",
        "use_numbered_elements": [
          1,
          2,
          6,
          7,
          11,
          14,
          15,
          16,
          21,
          22,
          23,
          24
        ],
        "ignore_numbered_elements": [
          29,
          30,
          31,
          32,
          33,
          34,
          35,
          36,
          37,
          38,
          39,
          40,
          41,
          42,
          43,
          44,
          45
        ],
        "base_markers_to_reference": [
          {
            "number": 1,
            "label": "shared living and dining zone",
            "category": "area",
            "position_hint": "central and south-central portion of the home",
            "base_layer_decision": "base_structural_unit",
            "render_role": "not_applicable",
            "top_down_legibility": "not_applicable"
          },
          {
            "number": 2,
            "label": "kitchenette service zone",
            "category": "area",
            "position_hint": "west side of shared zone",
            "base_layer_decision": "base_structural_unit",
            "render_role": "not_applicable",
            "top_down_legibility": "not_applicable"
          },
          {
            "number": 6,
            "label": "entry threshold",
            "category": "area",
            "position_hint": "south edge outside and immediately inside the iron entry door",
            "base_layer_decision": "base_structural_unit",
            "render_role": "not_applicable",
            "top_down_legibility": "not_applicable"
          },
          {
            "number": 7,
            "label": "iron entry door",
            "category": "opening",
            "position_hint": "south wall of shared zone beside bathroom",
            "base_layer_decision": "base_opening",
            "render_role": "not_applicable",
            "top_down_legibility": "not_applicable"
          },
          {
            "number": 11,
            "label": "living room window",
            "category": "opening",
            "position_hint": "west exterior wall of shared zone",
            "base_layer_decision": "base_opening",
            "render_role": "not_applicable",
            "top_down_legibility": "not_applicable"
          },
          {
            "number": 14,
            "label": "kitchen sink counter",
            "category": "furniture",
            "position_hint": "west wall of kitchenette",
            "base_layer_decision": "base_persistent_fixture",
            "render_role": "not_applicable",
            "top_down_legibility": "not_applicable"
          },
          {
            "number": 15,
            "label": "stovetop",
            "category": "furniture",
            "position_hint": "west kitchenette run immediately north of sink counter",
            "base_layer_decision": "base_persistent_fixture",
            "render_role": "not_applicable",
            "top_down_legibility": "not_applicable"
          },
          {
            "number": 16,
            "label": "refrigerator",
            "category": "furniture",
            "position_hint": "south end of kitchenette service zone",
            "base_layer_decision": "base_persistent_fixture",
            "render_role": "not_applicable",
            "top_down_legibility": "not_applicable"
          },
          {
            "number": 21,
            "label": "television and low stand",
            "category": "furniture",
            "position_hint": "east wall of shared living zone",
            "base_layer_decision": "base_persistent_furniture",
            "render_role": "not_applicable",
            "top_down_legibility": "not_applicable"
          },
          {
            "number": 22,
            "label": "dining table",
            "category": "furniture",
            "position_hint": "center of shared zone between kitchenette and television",
            "base_layer_decision": "base_persistent_furniture",
            "render_role": "not_applicable",
            "top_down_legibility": "not_applicable"
          },
          {
            "number": 23,
            "label": "west dining chair",
            "category": "furniture",
            "position_hint": "west side of dining table",
            "base_layer_decision": "base_persistent_furniture",
            "render_role": "not_applicable",
            "top_down_legibility": "not_applicable"
          },
          {
            "number": 24,
            "label": "east dining chair",
            "category": "furniture",
            "position_hint": "east side of dining table",
            "base_layer_decision": "base_persistent_furniture",
            "render_role": "not_applicable",
            "top_down_legibility": "not_applicable"
          }
        ],
        "transient_markers_to_describe": [],
        "ignored_state_overlay_markers": [
          {
            "number": 29,
            "label": "shifted backpack",
            "category": "prop",
            "position_hint": "single spot on daughter bedroom floor near foot of bed",
            "base_layer_decision": "state_overlay_transient_object",
            "render_role": "not_applicable",
            "top_down_legibility": "not_applicable"
          },
          {
            "number": 30,
            "label": "shifted doll",
            "category": "prop",
            "position_hint": "single spot beside the backpack in daughter bedroom",
            "base_layer_decision": "state_overlay_transient_object",
            "render_role": "not_applicable",
            "top_down_legibility": "not_applicable"
          },
          {
            "number": 31,
            "label": "cooled cooking pot",
            "category": "prop",
            "position_hint": "on stovetop in kitchenette",
            "base_layer_decision": "state_overlay_transient_object",
            "render_role": "not_applicable",
            "top_down_legibility": "not_applicable"
          },
          {
            "number": 32,
            "label": "upright extra teacup",
            "category": "prop",
            "position_hint": "north side of dining tabletop",
            "base_layer_decision": "state_overlay_transient_object",
            "render_role": "not_applicable",
            "top_down_legibility": "not_applicable"
          },
          {
            "number": 33,
            "label": "overturned teacup",
            "category": "prop",
            "position_hint": "south side of dining tabletop",
            "base_layer_decision": "state_overlay_transient_object",
            "render_role": "not_applicable",
            "top_down_legibility": "not_applicable"
          },
          {
            "number": 34,
            "label": "blood pool beside curtain",
            "category": "prop",
            "position_hint": "single contiguous pool on daughter bedroom floor beside curtain",
            "base_layer_decision": "state_overlay_plot_cue",
            "render_role": "not_applicable",
            "top_down_legibility": "not_applicable"
          },
          {
            "number": 35,
            "label": "bloody footprint trail",
            "category": "prop",
            "position_hint": "single contiguous trail from daughter bedroom doorway toward curtain",
            "base_layer_decision": "state_overlay_plot_cue",
            "render_role": "not_applicable",
            "top_down_legibility": "not_applicable"
          },
          {
            "number": 36,
            "label": "mutilated body behind curtain",
            "category": "prop",
            "position_hint": "daughter bedroom floor directly behind curtain",
            "base_layer_decision": "state_overlay_transient_object",
            "render_role": "not_applicable",
            "top_down_legibility": "not_applicable"
          },
          {
            "number": 37,
            "label": "red wall circle above bed",
            "category": "prop",
            "position_hint": "daughter bedroom wall above bed",
            "base_layer_decision": "state_overlay_plot_cue",
            "render_role": "not_applicable",
            "top_down_legibility": "not_applicable"
          },
          {
            "number": 38,
            "label": "vanishing bathroom red circle",
            "category": "prop",
            "position_hint": "bathroom wall beside mirror",
            "base_layer_decision": "state_overlay_plot_cue",
            "render_role": "not_applicable",
            "top_down_legibility": "not_applicable"
          },
          {
            "number": 39,
            "label": "distorted face in family photograph",
            "category": "prop",
            "position_hint": "single framed photograph on dining tabletop",
            "base_layer_decision": "state_overlay_plot_cue",
            "render_role": "not_applicable",
            "top_down_legibility": "not_applicable"
          },
          {
            "number": 40,
            "label": "muddy footprint trail",
            "category": "prop",
            "position_hint": "single contiguous trail from entry across shared-zone floor",
            "base_layer_decision": "state_overlay_plot_cue",
            "render_role": "not_applicable",
            "top_down_legibility": "not_applicable"
          },
          {
            "number": 41,
            "label": "toppled west dining chair",
            "category": "furniture",
            "position_hint": "floor immediately west of dining table",
            "base_layer_decision": "state_overlay_transient_object",
            "render_role": "not_applicable",
            "top_down_legibility": "not_applicable"
          },
          {
            "number": 42,
            "label": "toppled east dining chair",
            "category": "furniture",
            "position_hint": "floor immediately east of dining table",
            "base_layer_decision": "state_overlay_transient_object",
            "render_role": "not_applicable",
            "top_down_legibility": "not_applicable"
          },
          {
            "number": 43,
            "label": "rummaged kitchenette storage run",
            "category": "prop",
            "position_hint": "single contiguous lower-cabinet run beneath sink counter",
            "base_layer_decision": "state_overlay_plot_cue",
            "render_role": "not_applicable",
            "top_down_legibility": "not_applicable"
          },
          {
            "number": 44,
            "label": "bloodied old photograph",
            "category": "prop",
            "position_hint": "pinned at one spot on daughter bedroom wall near bed",
            "base_layer_decision": "state_overlay_transient_object",
            "render_role": "not_applicable",
            "top_down_legibility": "not_applicable"
          },
          {
            "number": 45,
            "label": "red circle around pinned photograph",
            "category": "prop",
            "position_hint": "single circle on daughter bedroom wall centered on photograph",
            "base_layer_decision": "state_overlay_plot_cue",
            "render_role": "not_applicable",
            "top_down_legibility": "not_applicable"
          }
        ],
        "target_unit_marker_numbers": [
          1,
          2,
          6
        ],
        "dominant_target_unit_marker_number": null,
        "clean_background_expected": true,
        "diagnostics": [
          "multiple base_structural_unit markers in use_numbered_elements ([1, 2, 6]); dominant_target_unit_marker_number left empty (W19B-1 lock — no lexical disambiguation)"
        ]
      },
      "L04B06": {
        "bg_id": "L04B06",
        "fp_id": "fp_l04_whole_interior",
        "use_numbered_elements": [
          1,
          2,
          4,
          9,
          13,
          14,
          15,
          21,
          22,
          23,
          24,
          26,
          27,
          28,
          31,
          32,
          33,
          34,
          35,
          36,
          37
        ],
        "ignore_numbered_elements": [
          29,
          30,
          38,
          39,
          40,
          41,
          42,
          43,
          44,
          45
        ],
        "base_markers_to_reference": [
          {
            "number": 1,
            "label": "shared living and dining zone",
            "category": "area",
            "position_hint": "central and south-central portion of the home",
            "base_layer_decision": "base_structural_unit",
            "render_role": "not_applicable",
            "top_down_legibility": "not_applicable"
          },
          {
            "number": 2,
            "label": "kitchenette service zone",
            "category": "area",
            "position_hint": "west side of shared zone",
            "base_layer_decision": "base_structural_unit",
            "render_role": "not_applicable",
            "top_down_legibility": "not_applicable"
          },
          {
            "number": 4,
            "label": "daughter bedroom",
            "category": "area",
            "position_hint": "northwest private room",
            "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": "north side of shared zone, western doorway",
            "base_layer_decision": "base_opening",
            "render_role": "not_applicable",
            "top_down_legibility": "not_applicable"
          },
          {
            "number": 13,
            "label": "daughter bedroom window",
            "category": "opening",
            "position_hint": "north exterior wall of daughter bedroom",
            "base_layer_decision": "base_opening",
            "render_role": "not_applicable",
            "top_down_legibility": "not_applicable"
          },
          {
            "number": 14,
            "label": "kitchen sink counter",
            "category": "furniture",
            "position_hint": "west wall of kitchenette",
            "base_layer_decision": "base_persistent_fixture",
            "render_role": "not_applicable",
            "top_down_legibility": "not_applicable"
          },
          {
            "number": 15,
            "label": "stovetop",
            "category": "furniture",
            "position_hint": "west kitchenette run immediately north of sink counter",
            "base_layer_decision": "base_persistent_fixture",
            "render_role": "not_applicable",
            "top_down_legibility": "not_applicable"
          },
          {
            "number": 21,
            "label": "television and low stand",
            "category": "furniture",
            "position_hint": "east wall of shared living zone",
            "base_layer_decision": "base_persistent_furniture",
            "render_role": "not_applicable",
            "top_down_legibility": "not_applicable"
          },
          {
            "number": 22,
            "label": "dining table",
            "category": "furniture",
            "position_hint": "center of shared zone between kitchenette and television",
            "base_layer_decision": "base_persistent_furniture",
            "render_role": "not_applicable",
            "top_down_legibility": "not_applicable"
          },
          {
            "number": 23,
            "label": "west dining chair",
            "category": "furniture",
            "position_hint": "west side of dining table",
            "base_layer_decision": "base_persistent_furniture",
            "render_role": "not_applicable",
            "top_down_legibility": "not_applicable"
          },
          {
            "number": 24,
            "label": "east dining chair",
            "category": "furniture",
            "position_hint": "east side of dining table",
            "base_layer_decision": "base_persistent_furniture",
            "render_role": "not_applicable",
            "top_down_legibility": "not_applicable"
          },
          {
            "number": 26,
            "label": "daughter bed",
            "category": "furniture",
            "position_hint": "east side of daughter bedroom with headboard against east wall",
            "base_layer_decision": "base_persistent_furniture",
            "render_role": "not_applicable",
            "top_down_legibility": "not_applicable"
          },
          {
            "number": 27,
            "label": "daughter window curtain",
            "category": "prop",
            "position_hint": "single curtain run across daughter bedroom window",
            "base_layer_decision": "base_persistent_fixture",
            "render_role": "not_applicable",
            "top_down_legibility": "not_applicable"
          },
          {
            "number": 28,
            "label": "living floor lamp",
            "category": "furniture",
            "position_hint": "northeast corner of shared zone near bedroom doors",
            "base_layer_decision": "base_persistent_furniture",
            "render_role": "not_applicable",
            "top_down_legibility": "not_applicable"
          }
        ],
        "transient_markers_to_describe": [
          {
            "number": 31,
            "label": "cooled cooking pot",
            "category": "prop",
            "position_hint": "on stovetop in kitchenette",
            "base_layer_decision": "state_overlay_transient_object",
            "render_role": "not_applicable",
            "top_down_legibility": "not_applicable"
          },
          {
            "number": 32,
            "label": "upright extra teacup",
            "category": "prop",
            "position_hint": "north side of dining tabletop",
            "base_layer_decision": "state_overlay_transient_object",
            "render_role": "not_applicable",
            "top_down_legibility": "not_applicable"
          },
          {
            "number": 33,
            "label": "overturned teacup",
            "category": "prop",
            "position_hint": "south side of dining tabletop",
            "base_layer_decision": "state_overlay_transient_object",
            "render_role": "not_applicable",
            "top_down_legibility": "not_applicable"
          },
          {
            "number": 34,
            "label": "blood pool beside curtain",
            "category": "prop",
            "position_hint": "single contiguous pool on daughter bedroom floor beside curtain",
            "base_layer_decision": "state_overlay_plot_cue",
            "render_role": "not_applicable",
            "top_down_legibility": "not_applicable"
          },
          {
            "number": 35,
            "label": "bloody footprint trail",
            "category": "prop",
            "position_hint": "single contiguous trail from daughter bedroom doorway toward curtain",
            "base_layer_decision": "state_overlay_plot_cue",
            "render_role": "not_applicable",
            "top_down_legibility": "not_applicable"
          },
          {
            "number": 36,
            "label": "mutilated body behind curtain",
            "category": "prop",
            "position_hint": "daughter bedroom floor directly behind curtain",
            "base_layer_decision": "state_overlay_transient_object",
            "render_role": "not_applicable",
            "top_down_legibility": "not_applicable"
          },
          {
            "number": 37,
            "label": "red wall circle above bed",
            "category": "prop",
            "position_hint": "daughter bedroom wall above bed",
            "base_layer_decision": "state_overlay_plot_cue",
            "render_role": "not_applicable",
            "top_down_legibility": "not_applicable"
          }
        ],
        "ignored_state_overlay_markers": [
          {
            "number": 29,
            "label": "shifted backpack",
            "category": "prop",
            "position_hint": "single spot on daughter bedroom floor near foot of bed",
            "base_layer_decision": "state_overlay_transient_object",
            "render_role": "not_applicable",
            "top_down_legibility": "not_applicable"
          },
          {
            "number": 30,
            "label": "shifted doll",
            "category": "prop",
            "position_hint": "single spot beside the backpack in daughter bedroom",
            "base_layer_decision": "state_overlay_transient_object",
            "render_role": "not_applicable",
            "top_down_legibility": "not_applicable"
          },
          {
            "number": 38,
            "label": "vanishing bathroom red circle",
            "category": "prop",
            "position_hint": "bathroom wall beside mirror",
            "base_layer_decision": "state_overlay_plot_cue",
            "render_role": "not_applicable",
            "top_down_legibility": "not_applicable"
          },
          {
            "number": 39,
            "label": "distorted face in family photograph",
            "category": "prop",
            "position_hint": "single framed photograph on dining tabletop",
            "base_layer_decision": "state_overlay_plot_cue",
            "render_role": "not_applicable",
            "top_down_legibility": "not_applicable"
          },
          {
            "number": 40,
            "label": "muddy footprint trail",
            "category": "prop",
            "position_hint": "single contiguous trail from entry across shared-zone floor",
            "base_layer_decision": "state_overlay_plot_cue",
            "render_role": "not_applicable",
            "top_down_legibility": "not_applicable"
          },
          {
            "number": 41,
            "label": "toppled west dining chair",
            "category": "furniture",
            "position_hint": "floor immediately west of dining table",
            "base_layer_decision": "state_overlay_transient_object",
            "render_role": "not_applicable",
            "top_down_legibility": "not_applicable"
          },
          {
            "number": 42,
            "label": "toppled east dining chair",
            "category": "furniture",
            "position_hint": "floor immediately east of dining table",
            "base_layer_decision": "state_overlay_transient_object",
            "render_role": "not_applicable",
            "top_down_legibility": "not_applicable"
          },
          {
            "number": 43,
            "label": "rummaged kitchenette storage run",
            "category": "prop",
            "position_hint": "single contiguous lower-cabinet run beneath sink counter",
            "base_layer_decision": "state_overlay_plot_cue",
            "render_role": "not_applicable",
            "top_down_legibility": "not_applicable"
          },
          {
            "number": 44,
            "label": "bloodied old photograph",
            "category": "prop",
            "position_hint": "pinned at one spot on daughter bedroom wall near bed",
            "base_layer_decision": "state_overlay_transient_object",
            "render_role": "not_applicable",
            "top_down_legibility": "not_applicable"
          },
          {
            "number": 45,
            "label": "red circle around pinned photograph",
            "category": "prop",
            "position_hint": "single circle on daughter bedroom wall centered on photograph",
            "base_layer_decision": "state_overlay_plot_cue",
            "render_role": "not_applicable",
            "top_down_legibility": "not_applicable"
          }
        ],
        "target_unit_marker_numbers": [
          1,
          2,
          4
        ],
        "dominant_target_unit_marker_number": null,
        "clean_background_expected": false,
        "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)"
        ]
      },
      "L04B07": {
        "bg_id": "L04B07",
        "fp_id": "fp_l04_whole_interior",
        "use_numbered_elements": [
          1,
          4,
          9,
          13,
          21,
          22,
          23,
          24,
          26,
          27,
          28,
          29,
          30
        ],
        "ignore_numbered_elements": [
          31,
          32,
          33,
          34,
          35,
          36,
          37,
          38,
          39,
          40,
          41,
          42,
          43,
          44,
          45
        ],
        "base_markers_to_reference": [
          {
            "number": 1,
            "label": "shared living and dining zone",
            "category": "area",
            "position_hint": "central and south-central portion of the home",
            "base_layer_decision": "base_structural_unit",
            "render_role": "not_applicable",
            "top_down_legibility": "not_applicable"
          },
          {
            "number": 4,
            "label": "daughter bedroom",
            "category": "area",
            "position_hint": "northwest private room",
            "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": "north side of shared zone, western doorway",
            "base_layer_decision": "base_opening",
            "render_role": "not_applicable",
            "top_down_legibility": "not_applicable"
          },
          {
            "number": 13,
            "label": "daughter bedroom window",
            "category": "opening",
            "position_hint": "north exterior wall of daughter bedroom",
            "base_layer_decision": "base_opening",
            "render_role": "not_applicable",
            "top_down_legibility": "not_applicable"
          },
          {
            "number": 21,
            "label": "television and low stand",
            "category": "furniture",
            "position_hint": "east wall of shared living zone",
            "base_layer_decision": "base_persistent_furniture",
            "render_role": "not_applicable",
            "top_down_legibility": "not_applicable"
          },
          {
            "number": 22,
            "label": "dining table",
            "category": "furniture",
            "position_hint": "center of shared zone between kitchenette and television",
            "base_layer_decision": "base_persistent_furniture",
            "render_role": "not_applicable",
            "top_down_legibility": "not_applicable"
          },
          {
            "number": 23,
            "label": "west dining chair",
            "category": "furniture",
            "position_hint": "west side of dining table",
            "base_layer_decision": "base_persistent_furniture",
            "render_role": "not_applicable",
            "top_down_legibility": "not_applicable"
          },
          {
            "number": 24,
            "label": "east dining chair",
            "category": "furniture",
            "position_hint": "east side of dining table",
            "base_layer_decision": "base_persistent_furniture",
            "render_role": "not_applicable",
            "top_down_legibility": "not_applicable"
          },
          {
            "number": 26,
            "label": "daughter bed",
            "category": "furniture",
            "position_hint": "east side of daughter bedroom with headboard against east wall",
            "base_layer_decision": "base_persistent_furniture",
            "render_role": "not_applicable",
            "top_down_legibility": "not_applicable"
          },
          {
            "number": 27,
            "label": "daughter window curtain",
            "category": "prop",
            "position_hint": "single curtain run across daughter bedroom window",
            "base_layer_decision": "base_persistent_fixture",
            "render_role": "not_applicable",
            "top_down_legibility": "not_applicable"
          },
          {
            "number": 28,
            "label": "living floor lamp",
            "category": "furniture",
            "position_hint": "northeast corner of shared zone near bedroom doors",
            "base_layer_decision": "base_persistent_furniture",
            "render_role": "not_applicable",
            "top_down_legibility": "not_applicable"
          }
        ],
        "transient_markers_to_describe": [
          {
            "number": 29,
            "label": "shifted backpack",
            "category": "prop",
            "position_hint": "single spot on daughter bedroom floor near foot of bed",
            "base_layer_decision": "state_overlay_transient_object",
            "render_role": "not_applicable",
            "top_down_legibility": "not_applicable"
          },
          {
            "number": 30,
            "label": "shifted doll",
            "category": "prop",
            "position_hint": "single spot beside the backpack in daughter bedroom",
            "base_layer_decision": "state_overlay_transient_object",
            "render_role": "not_applicable",
            "top_down_legibility": "not_applicable"
          }
        ],
        "ignored_state_overlay_markers": [
          {
            "number": 31,
            "label": "cooled cooking pot",
            "category": "prop",
            "position_hint": "on stovetop in kitchenette",
            "base_layer_decision": "state_overlay_transient_object",
            "render_role": "not_applicable",
            "top_down_legibility": "not_applicable"
          },
          {
            "number": 32,
            "label": "upright extra teacup",
            "category": "prop",
            "position_hint": "north side of dining tabletop",
            "base_layer_decision": "state_overlay_transient_object",
            "render_role": "not_applicable",
            "top_down_legibility": "not_applicable"
          },
          {
            "number": 33,
            "label": "overturned teacup",
            "category": "prop",
            "position_hint": "south side of dining tabletop",
            "base_layer_decision": "state_overlay_transient_object",
            "render_role": "not_applicable",
            "top_down_legibility": "not_applicable"
          },
          {
            "number": 34,
            "label": "blood pool beside curtain",
            "category": "prop",
            "position_hint": "single contiguous pool on daughter bedroom floor beside curtain",
            "base_layer_decision": "state_overlay_plot_cue",
            "render_role": "not_applicable",
            "top_down_legibility": "not_applicable"
          },
          {
            "number": 35,
            "label": "bloody footprint trail",
            "category": "prop",
            "position_hint": "single contiguous trail from daughter bedroom doorway toward curtain",
            "base_layer_decision": "state_overlay_plot_cue",
            "render_role": "not_applicable",
            "top_down_legibility": "not_applicable"
          },
          {
            "number": 36,
            "label": "mutilated body behind curtain",
            "category": "prop",
            "position_hint": "daughter bedroom floor directly behind curtain",
            "base_layer_decision": "state_overlay_transient_object",
            "render_role": "not_applicable",
            "top_down_legibility": "not_applicable"
          },
          {
            "number": 37,
            "label": "red wall circle above bed",
            "category": "prop",
            "position_hint": "daughter bedroom wall above bed",
            "base_layer_decision": "state_overlay_plot_cue",
            "render_role": "not_applicable",
            "top_down_legibility": "not_applicable"
          },
          {
            "number": 38,
            "label": "vanishing bathroom red circle",
            "category": "prop",
            "position_hint": "bathroom wall beside mirror",
            "base_layer_decision": "state_overlay_plot_cue",
            "render_role": "not_applicable",
            "top_down_legibility": "not_applicable"
          },
          {
            "number": 39,
            "label": "distorted face in family photograph",
            "category": "prop",
            "position_hint": "single framed photograph on dining tabletop",
            "base_layer_decision": "state_overlay_plot_cue",
            "render_role": "not_applicable",
            "top_down_legibility": "not_applicable"
          },
          {
            "number": 40,
            "label": "muddy footprint trail",
            "category": "prop",
            "position_hint": "single contiguous trail from entry across shared-zone floor",
            "base_layer_decision": "state_overlay_plot_cue",
            "render_role": "not_applicable",
            "top_down_legibility": "not_applicable"
          },
          {
            "number": 41,
            "label": "toppled west dining chair",
            "category": "furniture",
            "position_hint": "floor immediately west of dining table",
            "base_layer_decision": "state_overlay_transient_object",
            "render_role": "not_applicable",
            "top_down_legibility": "not_applicable"
          },
          {
            "number": 42,
            "label": "toppled east dining chair",
            "category": "furniture",
            "position_hint": "floor immediately east of dining table",
            "base_layer_decision": "state_overlay_transient_object",
            "render_role": "not_applicable",
            "top_down_legibility": "not_applicable"
          },
          {
            "number": 43,
            "label": "rummaged kitchenette storage run",
            "category": "prop",
            "position_hint": "single contiguous lower-cabinet run beneath sink counter",
            "base_layer_decision": "state_overlay_plot_cue",
            "render_role": "not_applicable",
            "top_down_legibility": "not_applicable"
          },
          {
            "number": 44,
            "label": "bloodied old photograph",
            "category": "prop",
            "position_hint": "pinned at one spot on daughter bedroom wall near bed",
            "base_layer_decision": "state_overlay_transient_object",
            "render_role": "not_applicable",
            "top_down_legibility": "not_applicable"
          },
          {
            "number": 45,
            "label": "red circle around pinned photograph",
            "category": "prop",
            "position_hint": "single circle on daughter bedroom wall centered on photograph",
            "base_layer_decision": "state_overlay_plot_cue",
            "render_role": "not_applicable",
            "top_down_legibility": "not_applicable"
          }
        ],
        "target_unit_marker_numbers": [
          1,
          4
        ],
        "dominant_target_unit_marker_number": null,
        "clean_background_expected": false,
        "diagnostics": [
          "multiple base_structural_unit markers in use_numbered_elements ([1, 4]); dominant_target_unit_marker_number left empty (W19B-1 lock — no lexical disambiguation)"
        ]
      },
      "L04B05": {
        "bg_id": "L04B05",
        "fp_id": "fp_l04_whole_interior",
        "use_numbered_elements": [
          3,
          8,
          12,
          25
        ],
        "ignore_numbered_elements": [
          29,
          30,
          31,
          32,
          33,
          34,
          35,
          36,
          37,
          38,
          39,
          40,
          41,
          42,
          43,
          44,
          45
        ],
        "base_markers_to_reference": [
          {
            "number": 3,
            "label": "mother bedroom",
            "category": "area",
            "position_hint": "northeast private room",
            "base_layer_decision": "base_structural_unit",
            "render_role": "not_applicable",
            "top_down_legibility": "not_applicable"
          },
          {
            "number": 8,
            "label": "mother bedroom door",
            "category": "opening",
            "position_hint": "north side of shared zone, eastern doorway",
            "base_layer_decision": "base_opening",
            "render_role": "not_applicable",
            "top_down_legibility": "not_applicable"
          },
          {
            "number": 12,
            "label": "mother bedroom window",
            "category": "opening",
            "position_hint": "east exterior wall of mother bedroom",
            "base_layer_decision": "base_opening",
            "render_role": "not_applicable",
            "top_down_legibility": "not_applicable"
          },
          {
            "number": 25,
            "label": "mother bed",
            "category": "furniture",
            "position_hint": "center of mother bedroom with headboard against north wall",
            "base_layer_decision": "base_persistent_furniture",
            "render_role": "not_applicable",
            "top_down_legibility": "not_applicable"
          }
        ],
        "transient_markers_to_describe": [],
        "ignored_state_overlay_markers": [
          {
            "number": 29,
            "label": "shifted backpack",
            "category": "prop",
            "position_hint": "single spot on daughter bedroom floor near foot of bed",
            "base_layer_decision": "state_overlay_transient_object",
            "render_role": "not_applicable",
            "top_down_legibility": "not_applicable"
          },
          {
            "number": 30,
            "label": "shifted doll",
            "category": "prop",
            "position_hint": "single spot beside the backpack in daughter bedroom",
            "base_layer_decision": "state_overlay_transient_object",
            "render_role": "not_applicable",
            "top_down_legibility": "not_applicable"
          },
          {
            "number": 31,
            "label": "cooled cooking pot",
            "category": "prop",
            "position_hint": "on stovetop in kitchenette",
            "base_layer_decision": "state_overlay_transient_object",
            "render_role": "not_applicable",
            "top_down_legibility": "not_applicable"
          },
          {
            "number": 32,
            "label": "upright extra teacup",
            "category": "prop",
            "position_hint": "north side of dining tabletop",
            "base_layer_decision": "state_overlay_transient_object",
            "render_role": "not_applicable",
            "top_down_legibility": "not_applicable"
          },
          {
            "number": 33,
            "label": "overturned teacup",
            "category": "prop",
            "position_hint": "south side of dining tabletop",
            "base_layer_decision": "state_overlay_transient_object",
            "render_role": "not_applicable",
            "top_down_legibility": "not_applicable"
          },
          {
            "number": 34,
            "label": "blood pool beside curtain",
            "category": "prop",
            "position_hint": "single contiguous pool on daughter bedroom floor beside curtain",
            "base_layer_decision": "state_overlay_plot_cue",
            "render_role": "not_applicable",
            "top_down_legibility": "not_applicable"
          },
          {
            "number": 35,
            "label": "bloody footprint trail",
            "category": "prop",
            "position_hint": "single contiguous trail from daughter bedroom doorway toward curtain",
            "base_layer_decision": "state_overlay_plot_cue",
            "render_role": "not_applicable",
            "top_down_legibility": "not_applicable"
          },
          {
            "number": 36,
            "label": "mutilated body behind curtain",
            "category": "prop",
            "position_hint": "daughter bedroom floor directly behind curtain",
            "base_layer_decision": "state_overlay_transient_object",
            "render_role": "not_applicable",
            "top_down_legibility": "not_applicable"
          },
          {
            "number": 37,
            "label": "red wall circle above bed",
            "category": "prop",
            "position_hint": "daughter bedroom wall above bed",
            "base_layer_decision": "state_overlay_plot_cue",
            "render_role": "not_applicable",
            "top_down_legibility": "not_applicable"
          },
          {
            "number": 38,
            "label": "vanishing bathroom red circle",
            "category": "prop",
            "position_hint": "bathroom wall beside mirror",
            "base_layer_decision": "state_overlay_plot_cue",
            "render_role": "not_applicable",
            "top_down_legibility": "not_applicable"
          },
          {
            "number": 39,
            "label": "distorted face in family photograph",
            "category": "prop",
            "position_hint": "single framed photograph on dining tabletop",
            "base_layer_decision": "state_overlay_plot_cue",
            "render_role": "not_applicable",
            "top_down_legibility": "not_applicable"
          },
          {
            "number": 40,
            "label": "muddy footprint trail",
            "category": "prop",
            "position_hint": "single contiguous trail from entry across shared-zone floor",
            "base_layer_decision": "state_overlay_plot_cue",
            "render_role": "not_applicable",
            "top_down_legibility": "not_applicable"
          },
          {
            "number": 41,
            "label": "toppled west dining chair",
            "category": "furniture",
            "position_hint": "floor immediately west of dining table",
            "base_layer_decision": "state_overlay_transient_object",
            "render_role": "not_applicable",
            "top_down_legibility": "not_applicable"
          },
          {
            "number": 42,
            "label": "toppled east dining chair",
            "category": "furniture",
            "position_hint": "floor immediately east of dining table",
            "base_layer_decision": "state_overlay_transient_object",
            "render_role": "not_applicable",
            "top_down_legibility": "not_applicable"
          },
          {
            "number": 43,
            "label": "rummaged kitchenette storage run",
            "category": "prop",
            "position_hint": "single contiguous lower-cabinet run beneath sink counter",
            "base_layer_decision": "state_overlay_plot_cue",
            "render_role": "not_applicable",
            "top_down_legibility": "not_applicable"
          },
          {
            "number": 44,
            "label": "bloodied old photograph",
            "category": "prop",
            "position_hint": "pinned at one spot on daughter bedroom wall near bed",
            "base_layer_decision": "state_overlay_transient_object",
            "render_role": "not_applicable",
            "top_down_legibility": "not_applicable"
          },
          {
            "number": 45,
            "label": "red circle around pinned photograph",
            "category": "prop",
            "position_hint": "single circle on daughter bedroom wall centered on photograph",
            "base_layer_decision": "state_overlay_plot_cue",
            "render_role": "not_applicable",
            "top_down_legibility": "not_applicable"
          }
        ],
        "target_unit_marker_numbers": [
          3
        ],
        "dominant_target_unit_marker_number": 3,
        "clean_background_expected": true,
        "diagnostics": []
      },
      "L04B04": {
        "bg_id": "L04B04",
        "fp_id": "fp_l04_whole_interior",
        "use_numbered_elements": [
          1,
          5,
          10,
          17,
          18,
          19,
          20,
          22,
          38,
          39
        ],
        "ignore_numbered_elements": [
          29,
          30,
          31,
          32,
          33,
          34,
          35,
          36,
          37,
          40,
          41,
          42,
          43,
          44,
          45
        ],
        "base_markers_to_reference": [
          {
            "number": 1,
            "label": "shared living and dining zone",
            "category": "area",
            "position_hint": "central and south-central portion of the home",
            "base_layer_decision": "base_structural_unit",
            "render_role": "not_applicable",
            "top_down_legibility": "not_applicable"
          },
          {
            "number": 5,
            "label": "bathroom",
            "category": "area",
            "position_hint": "southeast service room beside entry",
            "base_layer_decision": "base_structural_unit",
            "render_role": "not_applicable",
            "top_down_legibility": "not_applicable"
          },
          {
            "number": 10,
            "label": "bathroom door",
            "category": "opening",
            "position_hint": "east side of shared zone near entry",
            "base_layer_decision": "base_opening",
            "render_role": "not_applicable",
            "top_down_legibility": "not_applicable"
          },
          {
            "number": 17,
            "label": "bathroom sink",
            "category": "furniture",
            "position_hint": "north wall of bathroom",
            "base_layer_decision": "base_persistent_fixture",
            "render_role": "not_applicable",
            "top_down_legibility": "not_applicable"
          },
          {
            "number": 18,
            "label": "bathroom mirror",
            "category": "prop",
            "position_hint": "north bathroom wall directly above sink",
            "base_layer_decision": "base_persistent_fixture",
            "render_role": "not_applicable",
            "top_down_legibility": "not_applicable"
          },
          {
            "number": 19,
            "label": "toilet",
            "category": "furniture",
            "position_hint": "east side of bathroom",
            "base_layer_decision": "base_persistent_fixture",
            "render_role": "not_applicable",
            "top_down_legibility": "not_applicable"
          },
          {
            "number": 20,
            "label": "shower floor drain",
            "category": "furniture",
            "position_hint": "southwest corner of bathroom",
            "base_layer_decision": "base_persistent_fixture",
            "render_role": "not_applicable",
            "top_down_legibility": "not_applicable"
          },
          {
            "number": 22,
            "label": "dining table",
            "category": "furniture",
            "position_hint": "center of shared zone between kitchenette and television",
            "base_layer_decision": "base_persistent_furniture",
            "render_role": "not_applicable",
            "top_down_legibility": "not_applicable"
          }
        ],
        "transient_markers_to_describe": [
          {
            "number": 38,
            "label": "vanishing bathroom red circle",
            "category": "prop",
            "position_hint": "bathroom wall beside mirror",
            "base_layer_decision": "state_overlay_plot_cue",
            "render_role": "not_applicable",
            "top_down_legibility": "not_applicable"
          },
          {
            "number": 39,
            "label": "distorted face in family photograph",
            "category": "prop",
            "position_hint": "single framed photograph on dining tabletop",
            "base_layer_decision": "state_overlay_plot_cue",
            "render_role": "not_applicable",
            "top_down_legibility": "not_applicable"
          }
        ],
        "ignored_state_overlay_markers": [
          {
            "number": 29,
            "label": "shifted backpack",
            "category": "prop",
            "position_hint": "single spot on daughter bedroom floor near foot of bed",
            "base_layer_decision": "state_overlay_transient_object",
            "render_role": "not_applicable",
            "top_down_legibility": "not_applicable"
          },
          {
            "number": 30,
            "label": "shifted doll",
            "category": "prop",
            "position_hint": "single spot beside the backpack in daughter bedroom",
            "base_layer_decision": "state_overlay_transient_object",
            "render_role": "not_applicable",
            "top_down_legibility": "not_applicable"
          },
          {
            "number": 31,
            "label": "cooled cooking pot",
            "category": "prop",
            "position_hint": "on stovetop in kitchenette",
            "base_layer_decision": "state_overlay_transient_object",
            "render_role": "not_applicable",
            "top_down_legibility": "not_applicable"
          },
          {
            "number": 32,
            "label": "upright extra teacup",
            "category": "prop",
            "position_hint": "north side of dining tabletop",
            "base_layer_decision": "state_overlay_transient_object",
            "render_role": "not_applicable",
            "top_down_legibility": "not_applicable"
          },
          {
            "number": 33,
            "label": "overturned teacup",
            "category": "prop",
            "position_hint": "south side of dining tabletop",
            "base_layer_decision": "state_overlay_transient_object",
            "render_role": "not_applicable",
            "top_down_legibility": "not_applicable"
          },
          {
            "number": 34,
            "label": "blood pool beside curtain",
            "category": "prop",
            "position_hint": "single contiguous pool on daughter bedroom floor beside curtain",
            "base_layer_decision": "state_overlay_plot_cue",
            "render_role": "not_applicable",
            "top_down_legibility": "not_applicable"
          },
          {
            "number": 35,
            "label": "bloody footprint trail",
            "category": "prop",
            "position_hint": "single contiguous trail from daughter bedroom doorway toward curtain",
            "base_layer_decision": "state_overlay_plot_cue",
            "render_role": "not_applicable",
            "top_down_legibility": "not_applicable"
          },
          {
            "number": 36,
            "label": "mutilated body behind curtain",
            "category": "prop",
            "position_hint": "daughter bedroom floor directly behind curtain",
            "base_layer_decision": "state_overlay_transient_object",
            "render_role": "not_applicable",
            "top_down_legibility": "not_applicable"
          },
          {
            "number": 37,
            "label": "red wall circle above bed",
            "category": "prop",
            "position_hint": "daughter bedroom wall above bed",
            "base_layer_decision": "state_overlay_plot_cue",
            "render_role": "not_applicable",
            "top_down_legibility": "not_applicable"
          },
          {
            "number": 40,
            "label": "muddy footprint trail",
            "category": "prop",
            "position_hint": "single contiguous trail from entry across shared-zone floor",
            "base_layer_decision": "state_overlay_plot_cue",
            "render_role": "not_applicable",
            "top_down_legibility": "not_applicable"
          },
          {
            "number": 41,
            "label": "toppled west dining chair",
            "category": "furniture",
            "position_hint": "floor immediately west of dining table",
            "base_layer_decision": "state_overlay_transient_object",
            "render_role": "not_applicable",
            "top_down_legibility": "not_applicable"
          },
          {
            "number": 42,
            "label": "toppled east dining chair",
            "category": "furniture",
            "position_hint": "floor immediately east of dining table",
            "base_layer_decision": "state_overlay_transient_object",
            "render_role": "not_applicable",
            "top_down_legibility": "not_applicable"
          },
          {
            "number": 43,
            "label": "rummaged kitchenette storage run",
            "category": "prop",
            "position_hint": "single contiguous lower-cabinet run beneath sink counter",
            "base_layer_decision": "state_overlay_plot_cue",
            "render_role": "not_applicable",
            "top_down_legibility": "not_applicable"
          },
          {
            "number": 44,
            "label": "bloodied old photograph",
            "category": "prop",
            "position_hint": "pinned at one spot on daughter bedroom wall near bed",
            "base_layer_decision": "state_overlay_transient_object",
            "render_role": "not_applicable",
            "top_down_legibility": "not_applicable"
          },
          {
            "number": 45,
            "label": "red circle around pinned photograph",
            "category": "prop",
            "position_hint": "single circle on daughter bedroom wall centered on photograph",
            "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)"
        ]
      },
      "L04B03": {
        "bg_id": "L04B03",
        "fp_id": "fp_l04_whole_interior",
        "use_numbered_elements": [
          1,
          2,
          6,
          7,
          11,
          14,
          15,
          16,
          21,
          22,
          23,
          24,
          40,
          41,
          42,
          43
        ],
        "ignore_numbered_elements": [
          29,
          30,
          31,
          32,
          33,
          34,
          35,
          36,
          37,
          38,
          39,
          44,
          45
        ],
        "base_markers_to_reference": [
          {
            "number": 1,
            "label": "shared living and dining zone",
            "category": "area",
            "position_hint": "central and south-central portion of the home",
            "base_layer_decision": "base_structural_unit",
            "render_role": "not_applicable",
            "top_down_legibility": "not_applicable"
          },
          {
            "number": 2,
            "label": "kitchenette service zone",
            "category": "area",
            "position_hint": "west side of shared zone",
            "base_layer_decision": "base_structural_unit",
            "render_role": "not_applicable",
            "top_down_legibility": "not_applicable"
          },
          {
            "number": 6,
            "label": "entry threshold",
            "category": "area",
            "position_hint": "south edge outside and immediately inside the iron entry door",
            "base_layer_decision": "base_structural_unit",
            "render_role": "not_applicable",
            "top_down_legibility": "not_applicable"
          },
          {
            "number": 7,
            "label": "iron entry door",
            "category": "opening",
            "position_hint": "south wall of shared zone beside bathroom",
            "base_layer_decision": "base_opening",
            "render_role": "not_applicable",
            "top_down_legibility": "not_applicable"
          },
          {
            "number": 11,
            "label": "living room window",
            "category": "opening",
            "position_hint": "west exterior wall of shared zone",
            "base_layer_decision": "base_opening",
            "render_role": "not_applicable",
            "top_down_legibility": "not_applicable"
          },
          {
            "number": 14,
            "label": "kitchen sink counter",
            "category": "furniture",
            "position_hint": "west wall of kitchenette",
            "base_layer_decision": "base_persistent_fixture",
            "render_role": "not_applicable",
            "top_down_legibility": "not_applicable"
          },
          {
            "number": 15,
            "label": "stovetop",
            "category": "furniture",
            "position_hint": "west kitchenette run immediately north of sink counter",
            "base_layer_decision": "base_persistent_fixture",
            "render_role": "not_applicable",
            "top_down_legibility": "not_applicable"
          },
          {
            "number": 16,
            "label": "refrigerator",
            "category": "furniture",
            "position_hint": "south end of kitchenette service zone",
            "base_layer_decision": "base_persistent_fixture",
            "render_role": "not_applicable",
            "top_down_legibility": "not_applicable"
          },
          {
            "number": 21,
            "label": "television and low stand",
            "category": "furniture",
            "position_hint": "east wall of shared living zone",
            "base_layer_decision": "base_persistent_furniture",
            "render_role": "not_applicable",
            "top_down_legibility": "not_applicable"
          },
          {
            "number": 22,
            "label": "dining table",
            "category": "furniture",
            "position_hint": "center of shared zone between kitchenette and television",
            "base_layer_decision": "base_persistent_furniture",
            "render_role": "not_applicable",
            "top_down_legibility": "not_applicable"
          },
          {
            "number": 23,
            "label": "west dining chair",
            "category": "furniture",
            "position_hint": "west side of dining table",
            "base_layer_decision": "base_persistent_furniture",
            "render_role": "not_applicable",
            "top_down_legibility": "not_applicable"
          },
          {
            "number": 24,
            "label": "east dining chair",
            "category": "furniture",
            "position_hint": "east side of dining table",
            "base_layer_decision": "base_persistent_furniture",
            "render_role": "not_applicable",
            "top_down_legibility": "not_applicable"
          }
        ],
        "transient_markers_to_describe": [
          {
            "number": 40,
            "label": "muddy footprint trail",
            "category": "prop",
            "position_hint": "single contiguous trail from entry across shared-zone floor",
            "base_layer_decision": "state_overlay_plot_cue",
            "render_role": "not_applicable",
            "top_down_legibility": "not_applicable"
          },
          {
            "number": 41,
            "label": "toppled west dining chair",
            "category": "furniture",
            "position_hint": "floor immediately west of dining table",
            "base_layer_decision": "state_overlay_transient_object",
            "render_role": "not_applicable",
            "top_down_legibility": "not_applicable"
          },
          {
            "number": 42,
            "label": "toppled east dining chair",
            "category": "furniture",
            "position_hint": "floor immediately east of dining table",
            "base_layer_decision": "state_overlay_transient_object",
            "render_role": "not_applicable",
            "top_down_legibility": "not_applicable"
          },
          {
            "number": 43,
            "label": "rummaged kitchenette storage run",
            "category": "prop",
            "position_hint": "single contiguous lower-cabinet run beneath sink counter",
            "base_layer_decision": "state_overlay_plot_cue",
            "render_role": "not_applicable",
            "top_down_legibility": "not_applicable"
          }
        ],
        "ignored_state_overlay_markers": [
          {
            "number": 29,
            "label": "shifted backpack",
            "category": "prop",
            "position_hint": "single spot on daughter bedroom floor near foot of bed",
            "base_layer_decision": "state_overlay_transient_object",
            "render_role": "not_applicable",
            "top_down_legibility": "not_applicable"
          },
          {
            "number": 30,
            "label": "shifted doll",
            "category": "prop",
            "position_hint": "single spot beside the backpack in daughter bedroom",
            "base_layer_decision": "state_overlay_transient_object",
            "render_role": "not_applicable",
            "top_down_legibility": "not_applicable"
          },
          {
            "number": 31,
            "label": "cooled cooking pot",
            "category": "prop",
            "position_hint": "on stovetop in kitchenette",
            "base_layer_decision": "state_overlay_transient_object",
            "render_role": "not_applicable",
            "top_down_legibility": "not_applicable"
          },
          {
            "number": 32,
            "label": "upright extra teacup",
            "category": "prop",
            "position_hint": "north side of dining tabletop",
            "base_layer_decision": "state_overlay_transient_object",
            "render_role": "not_applicable",
            "top_down_legibility": "not_applicable"
          },
          {
            "number": 33,
            "label": "overturned teacup",
            "category": "prop",
            "position_hint": "south side of dining tabletop",
            "base_layer_decision": "state_overlay_transient_object",
            "render_role": "not_applicable",
            "top_down_legibility": "not_applicable"
          },
          {
            "number": 34,
            "label": "blood pool beside curtain",
            "category": "prop",
            "position_hint": "single contiguous pool on daughter bedroom floor beside curtain",
            "base_layer_decision": "state_overlay_plot_cue",
            "render_role": "not_applicable",
            "top_down_legibility": "not_applicable"
          },
          {
            "number": 35,
            "label": "bloody footprint trail",
            "category": "prop",
            "position_hint": "single contiguous trail from daughter bedroom doorway toward curtain",
            "base_layer_decision": "state_overlay_plot_cue",
            "render_role": "not_applicable",
            "top_down_legibility": "not_applicable"
          },
          {
            "number": 36,
            "label": "mutilated body behind curtain",
            "category": "prop",
            "position_hint": "daughter bedroom floor directly behind curtain",
            "base_layer_decision": "state_overlay_transient_object",
            "render_role": "not_applicable",
            "top_down_legibility": "not_applicable"
          },
          {
            "number": 37,
            "label": "red wall circle above bed",
            "category": "prop",
            "position_hint": "daughter bedroom wall above bed",
            "base_layer_decision": "state_overlay_plot_cue",
            "render_role": "not_applicable",
            "top_down_legibility": "not_applicable"
          },
          {
            "number": 38,
            "label": "vanishing bathroom red circle",
            "category": "prop",
            "position_hint": "bathroom wall beside mirror",
            "base_layer_decision": "state_overlay_plot_cue",
            "render_role": "not_applicable",
            "top_down_legibility": "not_applicable"
          },
          {
            "number": 39,
            "label": "distorted face in family photograph",
            "category": "prop",
            "position_hint": "single framed photograph on dining tabletop",
            "base_layer_decision": "state_overlay_plot_cue",
            "render_role": "not_applicable",
            "top_down_legibility": "not_applicable"
          },
          {
            "number": 44,
            "label": "bloodied old photograph",
            "category": "prop",
            "position_hint": "pinned at one spot on daughter bedroom wall near bed",
            "base_layer_decision": "state_overlay_transient_object",
            "render_role": "not_applicable",
            "top_down_legibility": "not_applicable"
          },
          {
            "number": 45,
            "label": "red circle around pinned photograph",
            "category": "prop",
            "position_hint": "single circle on daughter bedroom wall centered on photograph",
            "base_layer_decision": "state_overlay_plot_cue",
            "render_role": "not_applicable",
            "top_down_legibility": "not_applicable"
          }
        ],
        "target_unit_marker_numbers": [
          1,
          2,
          6
        ],
        "dominant_target_unit_marker_number": null,
        "clean_background_expected": false,
        "diagnostics": [
          "multiple base_structural_unit markers in use_numbered_elements ([1, 2, 6]); dominant_target_unit_marker_number left empty (W19B-1 lock — no lexical disambiguation)"
        ]
      },
      "L04B02": {
        "bg_id": "L04B02",
        "fp_id": "fp_l04_whole_interior",
        "use_numbered_elements": [
          4,
          9,
          13,
          26,
          27,
          44,
          45
        ],
        "ignore_numbered_elements": [
          29,
          30,
          31,
          32,
          33,
          34,
          35,
          36,
          37,
          38,
          39,
          40,
          41,
          42,
          43
        ],
        "base_markers_to_reference": [
          {
            "number": 4,
            "label": "daughter bedroom",
            "category": "area",
            "position_hint": "northwest private room",
            "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": "north side of shared zone, western doorway",
            "base_layer_decision": "base_opening",
            "render_role": "not_applicable",
            "top_down_legibility": "not_applicable"
          },
          {
            "number": 13,
            "label": "daughter bedroom window",
            "category": "opening",
            "position_hint": "north exterior wall of daughter bedroom",
            "base_layer_decision": "base_opening",
            "render_role": "not_applicable",
            "top_down_legibility": "not_applicable"
          },
          {
            "number": 26,
            "label": "daughter bed",
            "category": "furniture",
            "position_hint": "east side of daughter bedroom with headboard against east wall",
            "base_layer_decision": "base_persistent_furniture",
            "render_role": "not_applicable",
            "top_down_legibility": "not_applicable"
          },
          {
            "number": 27,
            "label": "daughter window curtain",
            "category": "prop",
            "position_hint": "single curtain run across daughter bedroom window",
            "base_layer_decision": "base_persistent_fixture",
            "render_role": "not_applicable",
            "top_down_legibility": "not_applicable"
          }
        ],
        "transient_markers_to_describe": [
          {
            "number": 44,
            "label": "bloodied old photograph",
            "category": "prop",
            "position_hint": "pinned at one spot on daughter bedroom wall near bed",
            "base_layer_decision": "state_overlay_transient_object",
            "render_role": "not_applicable",
            "top_down_legibility": "not_applicable"
          },
          {
            "number": 45,
            "label": "red circle around pinned photograph",
            "category": "prop",
            "position_hint": "single circle on daughter bedroom wall centered on photograph",
            "base_layer_decision": "state_overlay_plot_cue",
            "render_role": "not_applicable",
            "top_down_legibility": "not_applicable"
          }
        ],
        "ignored_state_overlay_markers": [
          {
            "number": 29,
            "label": "shifted backpack",
            "category": "prop",
            "position_hint": "single spot on daughter bedroom floor near foot of bed",
            "base_layer_decision": "state_overlay_transient_object",
            "render_role": "not_applicable",
            "top_down_legibility": "not_applicable"
          },
          {
            "number": 30,
            "label": "shifted doll",
            "category": "prop",
            "position_hint": "single spot beside the backpack in daughter bedroom",
            "base_layer_decision": "state_overlay_transient_object",
            "render_role": "not_applicable",
            "top_down_legibility": "not_applicable"
          },
          {
            "number": 31,
            "label": "cooled cooking pot",
            "category": "prop",
            "position_hint": "on stovetop in kitchenette",
            "base_layer_decision": "state_overlay_transient_object",
            "render_role": "not_applicable",
            "top_down_legibility": "not_applicable"
          },
          {
            "number": 32,
            "label": "upright extra teacup",
            "category": "prop",
            "position_hint": "north side of dining tabletop",
            "base_layer_decision": "state_overlay_transient_object",
            "render_role": "not_applicable",
            "top_down_legibility": "not_applicable"
          },
          {
            "number": 33,
            "label": "overturned teacup",
            "category": "prop",
            "position_hint": "south side of dining tabletop",
            "base_layer_decision": "state_overlay_transient_object",
            "render_role": "not_applicable",
            "top_down_legibility": "not_applicable"
          },
          {
            "number": 34,
            "label": "blood pool beside curtain",
            "category": "prop",
            "position_hint": "single contiguous pool on daughter bedroom floor beside curtain",
            "base_layer_decision": "state_overlay_plot_cue",
            "render_role": "not_applicable",
            "top_down_legibility": "not_applicable"
          },
          {
            "number": 35,
            "label": "bloody footprint trail",
            "category": "prop",
            "position_hint": "single contiguous trail from daughter bedroom doorway toward curtain",
            "base_layer_decision": "state_overlay_plot_cue",
            "render_role": "not_applicable",
            "top_down_legibility": "not_applicable"
          },
          {
            "number": 36,
            "label": "mutilated body behind curtain",
            "category": "prop",
            "position_hint": "daughter bedroom floor directly behind curtain",
            "base_layer_decision": "state_overlay_transient_object",
            "render_role": "not_applicable",
            "top_down_legibility": "not_applicable"
          },
          {
            "number": 37,
            "label": "red wall circle above bed",
            "category": "prop",
            "position_hint": "daughter bedroom wall above bed",
            "base_layer_decision": "state_overlay_plot_cue",
            "render_role": "not_applicable",
            "top_down_legibility": "not_applicable"
          },
          {
            "number": 38,
            "label": "vanishing bathroom red circle",
            "category": "prop",
            "position_hint": "bathroom wall beside mirror",
            "base_layer_decision": "state_overlay_plot_cue",
            "render_role": "not_applicable",
            "top_down_legibility": "not_applicable"
          },
          {
            "number": 39,
            "label": "distorted face in family photograph",
            "category": "prop",
            "position_hint": "single framed photograph on dining tabletop",
            "base_layer_decision": "state_overlay_plot_cue",
            "render_role": "not_applicable",
            "top_down_legibility": "not_applicable"
          },
          {
            "number": 40,
            "label": "muddy footprint trail",
            "category": "prop",
            "position_hint": "single contiguous trail from entry across shared-zone floor",
            "base_layer_decision": "state_overlay_plot_cue",
            "render_role": "not_applicable",
            "top_down_legibility": "not_applicable"
          },
          {
            "number": 41,
            "label": "toppled west dining chair",
            "category": "furniture",
            "position_hint": "floor immediately west of dining table",
            "base_layer_decision": "state_overlay_transient_object",
            "render_role": "not_applicable",
            "top_down_legibility": "not_applicable"
          },
          {
            "number": 42,
            "label": "toppled east dining chair",
            "category": "furniture",
            "position_hint": "floor immediately east of dining table",
            "base_layer_decision": "state_overlay_transient_object",
            "render_role": "not_applicable",
            "top_down_legibility": "not_applicable"
          },
          {
            "number": 43,
            "label": "rummaged kitchenette storage run",
            "category": "prop",
            "position_hint": "single contiguous lower-cabinet run beneath sink counter",
            "base_layer_decision": "state_overlay_plot_cue",
            "render_role": "not_applicable",
            "top_down_legibility": "not_applicable"
          }
        ],
        "target_unit_marker_numbers": [
          4
        ],
        "dominant_target_unit_marker_number": 4,
        "clean_background_expected": false,
        "diagnostics": []
      },
      "L08B01": {
        "bg_id": "L08B01",
        "fp_id": "fp_l08_store_main",
        "use_numbered_elements": [
          1,
          2,
          3,
          4,
          5,
          6,
          7,
          8,
          9,
          10,
          11,
          13
        ],
        "ignore_numbered_elements": [],
        "base_markers_to_reference": [
          {
            "number": 1,
            "label": "sales zone",
            "category": "area",
            "position_hint": "large central and northern portion of the plan",
            "base_layer_decision": "base_structural_unit",
            "render_role": "not_applicable",
            "top_down_legibility": "not_applicable"
          },
          {
            "number": 2,
            "label": "checkout service zone",
            "category": "area",
            "position_hint": "southwest front portion of the sales floor",
            "base_layer_decision": "base_structural_unit",
            "render_role": "not_applicable",
            "top_down_legibility": "not_applicable"
          },
          {
            "number": 3,
            "label": "entrance threshold zone",
            "category": "area",
            "position_hint": "shallow south-center strip immediately inside the exterior opening",
            "base_layer_decision": "base_structural_unit",
            "render_role": "not_applicable",
            "top_down_legibility": "not_applicable"
          },
          {
            "number": 4,
            "label": "automatic sliding entrance and exit",
            "category": "opening",
            "position_hint": "center of the south exterior wall",
            "base_layer_decision": "base_opening",
            "render_role": "not_applicable",
            "top_down_legibility": "not_applicable"
          },
          {
            "number": 5,
            "label": "checkout counter",
            "category": "furniture",
            "position_hint": "inside the service zone, west of the entrance threshold",
            "base_layer_decision": "base_persistent_fixture",
            "render_role": "not_applicable",
            "top_down_legibility": "not_applicable"
          },
          {
            "number": 6,
            "label": "west merchandise shelf run",
            "category": "furniture",
            "position_hint": "western half of the sales zone, oriented north to south",
            "base_layer_decision": "base_persistent_furniture",
            "render_role": "not_applicable",
            "top_down_legibility": "not_applicable"
          },
          {
            "number": 7,
            "label": "central merchandise shelf run",
            "category": "furniture",
            "position_hint": "center of the sales zone, oriented north to south",
            "base_layer_decision": "base_persistent_furniture",
            "render_role": "not_applicable",
            "top_down_legibility": "not_applicable"
          },
          {
            "number": 8,
            "label": "east merchandise shelf run",
            "category": "furniture",
            "position_hint": "eastern half of the sales zone, oriented north to south",
            "base_layer_decision": "base_persistent_furniture",
            "render_role": "not_applicable",
            "top_down_legibility": "not_applicable"
          },
          {
            "number": 9,
            "label": "produce display island",
            "category": "furniture",
            "position_hint": "south-central sales zone beyond the entrance threshold",
            "base_layer_decision": "base_persistent_furniture",
            "render_role": "not_applicable",
            "top_down_legibility": "not_applicable"
          },
          {
            "number": 10,
            "label": "rear refrigerated display case",
            "category": "furniture",
            "position_hint": "single contiguous run along the north wall",
            "base_layer_decision": "base_persistent_fixture",
            "render_role": "not_applicable",
            "top_down_legibility": "not_applicable"
          },
          {
            "number": 11,
            "label": "side refrigerated display case",
            "category": "furniture",
            "position_hint": "single contiguous run along the east wall",
            "base_layer_decision": "base_persistent_fixture",
            "render_role": "not_applicable",
            "top_down_legibility": "not_applicable"
          }
        ],
        "transient_markers_to_describe": [
          {
            "number": 13,
            "label": "stocking cartons",
            "category": "prop",
            "position_hint": "temporarily placed beside the south end of the east merchandise shelf run",
            "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
        ],
        "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)"
        ]
      },
      "L09B02": {
        "bg_id": "L09B02",
        "fp_id": "fp_l09_exterior_entrance",
        "use_numbered_elements": [
          1,
          2,
          3,
          4,
          5,
          6,
          7,
          8,
          9,
          10
        ],
        "ignore_numbered_elements": [],
        "base_markers_to_reference": [
          {
            "number": 1,
            "label": "retail interior zone",
            "category": "area",
            "position_hint": "north side of plan, directly behind the entrance frontage",
            "base_layer_decision": "base_structural_unit",
            "render_role": "not_applicable",
            "top_down_legibility": "not_applicable"
          },
          {
            "number": 2,
            "label": "entrance threshold zone",
            "category": "area",
            "position_hint": "center of frontage, between retail interior and exterior approach",
            "base_layer_decision": "base_structural_unit",
            "render_role": "not_applicable",
            "top_down_legibility": "not_applicable"
          },
          {
            "number": 3,
            "label": "exterior approach zone",
            "category": "area",
            "position_hint": "south side of plan, spanning the public sidewalk before the entrance",
            "base_layer_decision": "base_structural_unit",
            "render_role": "not_applicable",
            "top_down_legibility": "not_applicable"
          },
          {
            "number": 4,
            "label": "bicycle parking bay",
            "category": "area",
            "position_hint": "southwest side of the entrance, adjoining the exterior approach",
            "base_layer_decision": "base_structural_unit",
            "render_role": "not_applicable",
            "top_down_legibility": "not_applicable"
          },
          {
            "number": 5,
            "label": "automatic sliding entrance",
            "category": "opening",
            "position_hint": "center of the north frontage wall, opening between threshold and retail interior",
            "base_layer_decision": "base_opening",
            "render_role": "not_applicable",
            "top_down_legibility": "not_applicable"
          },
          {
            "number": 6,
            "label": "frontage glazing run",
            "category": "opening",
            "position_hint": "north frontage, immediately west of the automatic entrance",
            "base_layer_decision": "base_opening",
            "render_role": "not_applicable",
            "top_down_legibility": "not_applicable"
          },
          {
            "number": 7,
            "label": "mounted CCTV camera",
            "category": "prop",
            "position_hint": "on the exterior face of the wall panel east of the entrance, directed toward the threshold and bicycle bay",
            "base_layer_decision": "base_persistent_fixture",
            "render_role": "not_applicable",
            "top_down_legibility": "not_applicable"
          },
          {
            "number": 8,
            "label": "fixed bicycle rack",
            "category": "prop",
            "position_hint": "within the bicycle parking bay, parallel to the frontage",
            "base_layer_decision": "base_persistent_fixture",
            "render_role": "not_applicable",
            "top_down_legibility": "not_applicable"
          },
          {
            "number": 9,
            "label": "CCTV mounting wall panel",
            "category": "area",
            "position_hint": "single contiguous solid frontage panel immediately east of the entrance",
            "base_layer_decision": "base_structural_unit",
            "render_role": "not_applicable",
            "top_down_legibility": "not_applicable"
          }
        ],
        "transient_markers_to_describe": [
          {
            "number": 10,
            "label": "parked bicycle",
            "category": "prop",
            "position_hint": "temporarily parked beside the fixed rack in the bicycle parking bay",
            "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,
          9
        ],
        "dominant_target_unit_marker_number": null,
        "clean_background_expected": false,
        "diagnostics": [
          "multiple base_structural_unit markers in use_numbered_elements ([1, 2, 3, 4, 9]); dominant_target_unit_marker_number left empty (W19B-1 lock — no lexical disambiguation)"
        ]
      },
      "L10B01": {
        "bg_id": "L10B01",
        "fp_id": "fp_l10_admin_office",
        "use_numbered_elements": [
          1,
          2,
          6,
          7,
          8,
          9,
          11
        ],
        "ignore_numbered_elements": [],
        "base_markers_to_reference": [
          {
            "number": 1,
            "label": "operations zone",
            "category": "area",
            "position_hint": "north half of the office around the CCTV workstation",
            "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 open floor behind the operator chair",
            "base_layer_decision": "base_structural_unit",
            "render_role": "not_applicable",
            "top_down_legibility": "not_applicable"
          },
          {
            "number": 6,
            "label": "CCTV workstation desk",
            "category": "furniture",
            "position_hint": "north wall, centered beneath the monitor bank",
            "base_layer_decision": "base_persistent_furniture",
            "render_role": "not_applicable",
            "top_down_legibility": "not_applicable"
          },
          {
            "number": 7,
            "label": "CCTV monitor bank",
            "category": "prop",
            "position_hint": "single contiguous bank against the north wall above the workstation",
            "base_layer_decision": "base_persistent_fixture",
            "render_role": "not_applicable",
            "top_down_legibility": "not_applicable"
          },
          {
            "number": 8,
            "label": "operator chair",
            "category": "furniture",
            "position_hint": "directly south of the workstation desk",
            "base_layer_decision": "base_persistent_furniture",
            "render_role": "not_applicable",
            "top_down_legibility": "not_applicable"
          },
          {
            "number": 9,
            "label": "filing cabinet",
            "category": "furniture",
            "position_hint": "east wall in the service storage zone",
            "base_layer_decision": "base_persistent_furniture",
            "render_role": "not_applicable",
            "top_down_legibility": "not_applicable"
          }
        ],
        "transient_markers_to_describe": [
          {
            "number": 11,
            "label": "unusually dark CCTV footage",
            "category": "prop",
            "position_hint": "confined to the display surface of the CCTV monitor bank during review",
            "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)"
        ]
      },
      "L13B03": {
        "bg_id": "L13B03",
        "fp_id": "fp_l13_corridor",
        "use_numbered_elements": [
          1,
          2,
          3,
          4,
          5,
          6
        ],
        "ignore_numbered_elements": [],
        "base_markers_to_reference": [
          {
            "number": 1,
            "label": "police-station corridor",
            "category": "area",
            "position_hint": "long circulation zone spanning the west side of the plan",
            "base_layer_decision": "base_structural_unit",
            "render_role": "not_applicable",
            "top_down_legibility": "not_applicable"
          },
          {
            "number": 2,
            "label": "detective office",
            "category": "area",
            "position_hint": "rectangular work room adjoining the east side of the corridor",
            "base_layer_decision": "base_structural_unit",
            "render_role": "not_applicable",
            "top_down_legibility": "not_applicable"
          },
          {
            "number": 3,
            "label": "office threshold",
            "category": "area",
            "position_hint": "small contiguous transition zone between the corridor and office doorway",
            "base_layer_decision": "base_structural_unit",
            "render_role": "not_applicable",
            "top_down_legibility": "not_applicable"
          },
          {
            "number": 4,
            "label": "hinged office doorway",
            "category": "opening",
            "position_hint": "west wall of the detective office, opening from the corridor threshold",
            "base_layer_decision": "base_opening",
            "render_role": "not_applicable",
            "top_down_legibility": "not_applicable"
          },
          {
            "number": 5,
            "label": "duty workstation desk",
            "category": "furniture",
            "position_hint": "inside the detective office, facing generally toward the doorway",
            "base_layer_decision": "base_persistent_furniture",
            "render_role": "not_applicable",
            "top_down_legibility": "not_applicable"
          }
        ],
        "transient_markers_to_describe": [
          {
            "number": 6,
            "label": "doorway light spill patch",
            "category": "area",
            "position_hint": "single contiguous floor patch immediately outside the office doorway in the corridor",
            "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)"
        ]
      },
      "L13B04": {
        "bg_id": "L13B04",
        "fp_id": "fp_l13_office",
        "use_numbered_elements": [
          1,
          2,
          3,
          5,
          6,
          7,
          11
        ],
        "ignore_numbered_elements": [
          13,
          14
        ],
        "base_markers_to_reference": [
          {
            "number": 1,
            "label": "shared work zone",
            "category": "area",
            "position_hint": "center of the main rectangular office, surrounding the desk bays",
            "base_layer_decision": "base_structural_unit",
            "render_role": "not_applicable",
            "top_down_legibility": "not_applicable"
          },
          {
            "number": 2,
            "label": "central circulation aisle",
            "category": "area",
            "position_hint": "clear north-south aisle through the middle of the office",
            "base_layer_decision": "base_structural_unit",
            "render_role": "not_applicable",
            "top_down_legibility": "not_applicable"
          },
          {
            "number": 3,
            "label": "corridor threshold zone",
            "category": "area",
            "position_hint": "south of the office wall, directly outside the entrance",
            "base_layer_decision": "base_structural_unit",
            "render_role": "not_applicable",
            "top_down_legibility": "not_applicable"
          },
          {
            "number": 5,
            "label": "corridor doorway",
            "category": "opening",
            "position_hint": "south wall, slightly east of center, opening into the corridor",
            "base_layer_decision": "base_opening",
            "render_role": "not_applicable",
            "top_down_legibility": "not_applicable"
          },
          {
            "number": 6,
            "label": "north window bank",
            "category": "opening",
            "position_hint": "single contiguous run centered in the north exterior wall",
            "base_layer_decision": "base_opening",
            "render_role": "not_applicable",
            "top_down_legibility": "not_applicable"
          },
          {
            "number": 7,
            "label": "tracked-data workstation desk",
            "category": "furniture",
            "position_hint": "east side of the central aisle, facing west",
            "base_layer_decision": "base_persistent_furniture",
            "render_role": "not_applicable",
            "top_down_legibility": "not_applicable"
          },
          {
            "number": 11,
            "label": "desktop monitor",
            "category": "prop",
            "position_hint": "rear edge of number 7, screen facing west into the central aisle",
            "base_layer_decision": "base_persistent_fixture",
            "render_role": "not_applicable",
            "top_down_legibility": "not_applicable"
          }
        ],
        "transient_markers_to_describe": [],
        "ignored_state_overlay_markers": [
          {
            "number": 13,
            "label": "tracking result on monitor",
            "category": "prop",
            "position_hint": "confined to the screen surface of number 11",
            "base_layer_decision": "state_overlay_plot_cue",
            "render_role": "not_applicable",
            "top_down_legibility": "not_applicable"
          },
          {
            "number": 14,
            "label": "scattered enlarged case photographs",
            "category": "prop",
            "position_hint": "single contiguous spread across the top of number 8",
            "base_layer_decision": "state_overlay_transient_object",
            "render_role": "not_applicable",
            "top_down_legibility": "not_applicable"
          }
        ],
        "target_unit_marker_numbers": [
          1,
          2,
          3
        ],
        "dominant_target_unit_marker_number": null,
        "clean_background_expected": true,
        "diagnostics": [
          "multiple base_structural_unit markers in use_numbered_elements ([1, 2, 3]); dominant_target_unit_marker_number left empty (W19B-1 lock — no lexical disambiguation)"
        ]
      },
      "L13B01": {
        "bg_id": "L13B01",
        "fp_id": "fp_l13_office",
        "use_numbered_elements": [
          1,
          2,
          6,
          7,
          8,
          9,
          10,
          11,
          13,
          14
        ],
        "ignore_numbered_elements": [],
        "base_markers_to_reference": [
          {
            "number": 1,
            "label": "shared work zone",
            "category": "area",
            "position_hint": "center of the main rectangular office, surrounding the desk bays",
            "base_layer_decision": "base_structural_unit",
            "render_role": "not_applicable",
            "top_down_legibility": "not_applicable"
          },
          {
            "number": 2,
            "label": "central circulation aisle",
            "category": "area",
            "position_hint": "clear north-south aisle through the middle of the office",
            "base_layer_decision": "base_structural_unit",
            "render_role": "not_applicable",
            "top_down_legibility": "not_applicable"
          },
          {
            "number": 6,
            "label": "north window bank",
            "category": "opening",
            "position_hint": "single contiguous run centered in the north exterior wall",
            "base_layer_decision": "base_opening",
            "render_role": "not_applicable",
            "top_down_legibility": "not_applicable"
          },
          {
            "number": 7,
            "label": "tracked-data workstation desk",
            "category": "furniture",
            "position_hint": "east side of the central aisle, facing west",
            "base_layer_decision": "base_persistent_furniture",
            "render_role": "not_applicable",
            "top_down_legibility": "not_applicable"
          },
          {
            "number": 8,
            "label": "primary investigator desk",
            "category": "furniture",
            "position_hint": "west side of the central aisle, facing east toward number 7",
            "base_layer_decision": "base_persistent_furniture",
            "render_role": "not_applicable",
            "top_down_legibility": "not_applicable"
          },
          {
            "number": 9,
            "label": "team desk A",
            "category": "furniture",
            "position_hint": "northwest desk bay below the window bank",
            "base_layer_decision": "base_persistent_furniture",
            "render_role": "not_applicable",
            "top_down_legibility": "not_applicable"
          },
          {
            "number": 10,
            "label": "team desk B",
            "category": "furniture",
            "position_hint": "northeast desk bay below the window bank",
            "base_layer_decision": "base_persistent_furniture",
            "render_role": "not_applicable",
            "top_down_legibility": "not_applicable"
          },
          {
            "number": 11,
            "label": "desktop monitor",
            "category": "prop",
            "position_hint": "rear edge of number 7, screen facing west into the central aisle",
            "base_layer_decision": "base_persistent_fixture",
            "render_role": "not_applicable",
            "top_down_legibility": "not_applicable"
          }
        ],
        "transient_markers_to_describe": [
          {
            "number": 13,
            "label": "tracking result on monitor",
            "category": "prop",
            "position_hint": "confined to the screen surface of number 11",
            "base_layer_decision": "state_overlay_plot_cue",
            "render_role": "not_applicable",
            "top_down_legibility": "not_applicable"
          },
          {
            "number": 14,
            "label": "scattered enlarged case photographs",
            "category": "prop",
            "position_hint": "single contiguous spread across the top of number 8",
            "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
        ],
        "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)"
        ]
      },
      "L13B02": {
        "bg_id": "L13B02",
        "fp_id": "fp_l13_office",
        "use_numbered_elements": [
          1,
          2,
          3,
          5,
          7,
          8,
          11,
          13,
          14
        ],
        "ignore_numbered_elements": [],
        "base_markers_to_reference": [
          {
            "number": 1,
            "label": "shared work zone",
            "category": "area",
            "position_hint": "center of the main rectangular office, surrounding the desk bays",
            "base_layer_decision": "base_structural_unit",
            "render_role": "not_applicable",
            "top_down_legibility": "not_applicable"
          },
          {
            "number": 2,
            "label": "central circulation aisle",
            "category": "area",
            "position_hint": "clear north-south aisle through the middle of the office",
            "base_layer_decision": "base_structural_unit",
            "render_role": "not_applicable",
            "top_down_legibility": "not_applicable"
          },
          {
            "number": 3,
            "label": "corridor threshold zone",
            "category": "area",
            "position_hint": "south of the office wall, directly outside the entrance",
            "base_layer_decision": "base_structural_unit",
            "render_role": "not_applicable",
            "top_down_legibility": "not_applicable"
          },
          {
            "number": 5,
            "label": "corridor doorway",
            "category": "opening",
            "position_hint": "south wall, slightly east of center, opening into the corridor",
            "base_layer_decision": "base_opening",
            "render_role": "not_applicable",
            "top_down_legibility": "not_applicable"
          },
          {
            "number": 7,
            "label": "tracked-data workstation desk",
            "category": "furniture",
            "position_hint": "east side of the central aisle, facing west",
            "base_layer_decision": "base_persistent_furniture",
            "render_role": "not_applicable",
            "top_down_legibility": "not_applicable"
          },
          {
            "number": 8,
            "label": "primary investigator desk",
            "category": "furniture",
            "position_hint": "west side of the central aisle, facing east toward number 7",
            "base_layer_decision": "base_persistent_furniture",
            "render_role": "not_applicable",
            "top_down_legibility": "not_applicable"
          },
          {
            "number": 11,
            "label": "desktop monitor",
            "category": "prop",
            "position_hint": "rear edge of number 7, screen facing west into the central aisle",
            "base_layer_decision": "base_persistent_fixture",
            "render_role": "not_applicable",
            "top_down_legibility": "not_applicable"
          }
        ],
        "transient_markers_to_describe": [
          {
            "number": 13,
            "label": "tracking result on monitor",
            "category": "prop",
            "position_hint": "confined to the screen surface of number 11",
            "base_layer_decision": "state_overlay_plot_cue",
            "render_role": "not_applicable",
            "top_down_legibility": "not_applicable"
          },
          {
            "number": 14,
            "label": "scattered enlarged case photographs",
            "category": "prop",
            "position_hint": "single contiguous spread across the top of number 8",
            "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
        ],
        "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)"
        ]
      },
      "L17B02": {
        "bg_id": "L17B02",
        "fp_id": "fp_l17_deck",
        "use_numbered_elements": [
          1,
          2,
          4,
          5,
          10,
          11,
          12,
          13
        ],
        "ignore_numbered_elements": [],
        "base_markers_to_reference": [
          {
            "number": 1,
            "label": "open working deck",
            "category": "area",
            "position_hint": "broad forward portion of the vessel deck",
            "base_layer_decision": "base_structural_unit",
            "render_role": "not_applicable",
            "top_down_legibility": "not_applicable"
          },
          {
            "number": 2,
            "label": "central circulation lane",
            "category": "area",
            "position_hint": "clear longitudinal strip from the forward deck to the wheelhouse door",
            "base_layer_decision": "base_structural_unit",
            "render_role": "not_applicable",
            "top_down_legibility": "not_applicable"
          },
          {
            "number": 4,
            "label": "helm access threshold",
            "category": "area",
            "position_hint": "small contiguous threshold zone immediately outside and beneath the wheelhouse door",
            "base_layer_decision": "base_structural_unit",
            "render_role": "not_applicable",
            "top_down_legibility": "not_applicable"
          },
          {
            "number": 5,
            "label": "wheelhouse exterior door",
            "category": "opening",
            "position_hint": "center of the wheelhouse forward wall, opening onto the working deck",
            "base_layer_decision": "base_opening",
            "render_role": "not_applicable",
            "top_down_legibility": "not_applicable"
          },
          {
            "number": 10,
            "label": "port safety rail",
            "category": "prop",
            "position_hint": "continuous port edge of the open working deck",
            "base_layer_decision": "base_persistent_fixture",
            "render_role": "not_applicable",
            "top_down_legibility": "not_applicable"
          },
          {
            "number": 11,
            "label": "starboard safety rail",
            "category": "prop",
            "position_hint": "continuous starboard edge of the open working deck",
            "base_layer_decision": "base_persistent_fixture",
            "render_role": "not_applicable",
            "top_down_legibility": "not_applicable"
          },
          {
            "number": 12,
            "label": "bow safety rail",
            "category": "prop",
            "position_hint": "single curved rail run across the forward edge of the working deck",
            "base_layer_decision": "base_persistent_fixture",
            "render_role": "not_applicable",
            "top_down_legibility": "not_applicable"
          }
        ],
        "transient_markers_to_describe": [
          {
            "number": 13,
            "label": "blood-stained old photograph",
            "category": "prop",
            "position_hint": "held above the working deck during the evidence confrontation; not part of the base floor plan",
            "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,
          4
        ],
        "dominant_target_unit_marker_number": null,
        "clean_background_expected": false,
        "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)"
        ]
      },
      "L17B01": {
        "bg_id": "L17B01",
        "fp_id": "fp_l17_deck",
        "use_numbered_elements": [
          1,
          2,
          3,
          4,
          5,
          6,
          8,
          9
        ],
        "ignore_numbered_elements": [
          13
        ],
        "base_markers_to_reference": [
          {
            "number": 1,
            "label": "open working deck",
            "category": "area",
            "position_hint": "broad forward portion of the vessel deck",
            "base_layer_decision": "base_structural_unit",
            "render_role": "not_applicable",
            "top_down_legibility": "not_applicable"
          },
          {
            "number": 2,
            "label": "central circulation lane",
            "category": "area",
            "position_hint": "clear longitudinal strip from the forward deck to the wheelhouse door",
            "base_layer_decision": "base_structural_unit",
            "render_role": "not_applicable",
            "top_down_legibility": "not_applicable"
          },
          {
            "number": 3,
            "label": "wheelhouse control area",
            "category": "area",
            "position_hint": "compact enclosed compartment at the aft end of the working deck",
            "base_layer_decision": "base_structural_unit",
            "render_role": "not_applicable",
            "top_down_legibility": "not_applicable"
          },
          {
            "number": 4,
            "label": "helm access threshold",
            "category": "area",
            "position_hint": "small contiguous threshold zone immediately outside and beneath the wheelhouse door",
            "base_layer_decision": "base_structural_unit",
            "render_role": "not_applicable",
            "top_down_legibility": "not_applicable"
          },
          {
            "number": 5,
            "label": "wheelhouse exterior door",
            "category": "opening",
            "position_hint": "center of the wheelhouse forward wall, opening onto the working deck",
            "base_layer_decision": "base_opening",
            "render_role": "not_applicable",
            "top_down_legibility": "not_applicable"
          },
          {
            "number": 6,
            "label": "helm console with steering wheel",
            "category": "furniture",
            "position_hint": "inside the wheelhouse against the forward wall, facing the bow",
            "base_layer_decision": "base_persistent_fixture",
            "render_role": "not_applicable",
            "top_down_legibility": "not_applicable"
          },
          {
            "number": 8,
            "label": "port wheelhouse window",
            "category": "opening",
            "position_hint": "single contiguous window run in the port wall of the wheelhouse",
            "base_layer_decision": "base_opening",
            "render_role": "not_applicable",
            "top_down_legibility": "not_applicable"
          },
          {
            "number": 9,
            "label": "starboard wheelhouse window",
            "category": "opening",
            "position_hint": "single contiguous window run in the starboard wall of the wheelhouse",
            "base_layer_decision": "base_opening",
            "render_role": "not_applicable",
            "top_down_legibility": "not_applicable"
          }
        ],
        "transient_markers_to_describe": [],
        "ignored_state_overlay_markers": [
          {
            "number": 13,
            "label": "blood-stained old photograph",
            "category": "prop",
            "position_hint": "held above the working deck during the evidence confrontation; not part of the base floor plan",
            "base_layer_decision": "state_overlay_transient_object",
            "render_role": "not_applicable",
            "top_down_legibility": "not_applicable"
          }
        ],
        "target_unit_marker_numbers": [
          1,
          2,
          3,
          4
        ],
        "dominant_target_unit_marker_number": null,
        "clean_background_expected": true,
        "diagnostics": [
          "multiple base_structural_unit markers in use_numbered_elements ([1, 2, 3, 4]); dominant_target_unit_marker_number left empty (W19B-1 lock — no lexical disambiguation)"
        ]
      },
      "L18B01": {
        "bg_id": "L18B01",
        "fp_id": "fp_l18_wheelhouse",
        "use_numbered_elements": [
          1,
          2,
          3,
          4,
          5,
          6,
          7,
          8,
          9,
          10,
          11,
          12
        ],
        "ignore_numbered_elements": [
          13,
          14,
          15
        ],
        "base_markers_to_reference": [
          {
            "number": 1,
            "label": "central circulation area",
            "category": "area",
            "position_hint": "narrow central strip between the helm console and aft threshold",
            "base_layer_decision": "base_structural_unit",
            "render_role": "not_applicable",
            "top_down_legibility": "not_applicable"
          },
          {
            "number": 2,
            "label": "forward helm area",
            "category": "area",
            "position_hint": "forward third of the enclosed wheelhouse",
            "base_layer_decision": "base_structural_unit",
            "render_role": "not_applicable",
            "top_down_legibility": "not_applicable"
          },
          {
            "number": 3,
            "label": "aft threshold area",
            "category": "area",
            "position_hint": "inside the aft wall beside the access door",
            "base_layer_decision": "base_structural_unit",
            "render_role": "not_applicable",
            "top_down_legibility": "not_applicable"
          },
          {
            "number": 4,
            "label": "forward windshield bank",
            "category": "opening",
            "position_hint": "single contiguous run across the forward wall",
            "base_layer_decision": "base_opening",
            "render_role": "not_applicable",
            "top_down_legibility": "not_applicable"
          },
          {
            "number": 5,
            "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": 6,
            "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": 7,
            "label": "aft access door",
            "category": "opening",
            "position_hint": "aft wall, slightly to port of center",
            "base_layer_decision": "base_opening",
            "render_role": "not_applicable",
            "top_down_legibility": "not_applicable"
          },
          {
            "number": 8,
            "label": "helm console",
            "category": "furniture",
            "position_hint": "centered against the forward wall beneath the windshield bank",
            "base_layer_decision": "base_persistent_fixture",
            "render_role": "not_applicable",
            "top_down_legibility": "not_applicable"
          },
          {
            "number": 9,
            "label": "steering wheel",
            "category": "prop",
            "position_hint": "center of the aft-facing edge of the helm console",
            "base_layer_decision": "base_persistent_fixture",
            "render_role": "not_applicable",
            "top_down_legibility": "not_applicable"
          },
          {
            "number": 10,
            "label": "throttle control",
            "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": 11,
            "label": "navigation display",
            "category": "prop",
            "position_hint": "built into the port side of the helm console",
            "base_layer_decision": "base_persistent_fixture",
            "render_role": "not_applicable",
            "top_down_legibility": "not_applicable"
          },
          {
            "number": 12,
            "label": "fixed operator seat",
            "category": "furniture",
            "position_hint": "immediately aft of the steering wheel, aligned with the vessel centerline",
            "base_layer_decision": "base_persistent_furniture",
            "render_role": "not_applicable",
            "top_down_legibility": "not_applicable"
          }
        ],
        "transient_markers_to_describe": [],
        "ignored_state_overlay_markers": [
          {
            "number": 13,
            "label": "old photograph",
            "category": "prop",
            "position_hint": "held within the starboard side of the central circulation area during the evidence presentation",
            "base_layer_decision": "state_overlay_transient_object",
            "render_role": "not_applicable",
            "top_down_legibility": "not_applicable"
          },
          {
            "number": 14,
            "label": "subjective circular distortion cluster",
            "category": "prop",
            "position_hint": "one contiguous patch in the perceived space above the forward console",
            "base_layer_decision": "state_overlay_plot_cue",
            "render_role": "not_applicable",
            "top_down_legibility": "not_applicable"
          },
          {
            "number": 15,
            "label": "subjective red circle apparition",
            "category": "prop",
            "position_hint": "single perceived spot near the navigation display",
            "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)"
        ]
      },
      "L18B02": {
        "bg_id": "L18B02",
        "fp_id": "fp_l18_wheelhouse",
        "use_numbered_elements": [
          1,
          2,
          4,
          6,
          8,
          9,
          10,
          11,
          12,
          13
        ],
        "ignore_numbered_elements": [
          14,
          15
        ],
        "base_markers_to_reference": [
          {
            "number": 1,
            "label": "central circulation area",
            "category": "area",
            "position_hint": "narrow central strip between the helm console and aft threshold",
            "base_layer_decision": "base_structural_unit",
            "render_role": "not_applicable",
            "top_down_legibility": "not_applicable"
          },
          {
            "number": 2,
            "label": "forward helm area",
            "category": "area",
            "position_hint": "forward third of the enclosed wheelhouse",
            "base_layer_decision": "base_structural_unit",
            "render_role": "not_applicable",
            "top_down_legibility": "not_applicable"
          },
          {
            "number": 4,
            "label": "forward windshield bank",
            "category": "opening",
            "position_hint": "single contiguous run across the forward wall",
            "base_layer_decision": "base_opening",
            "render_role": "not_applicable",
            "top_down_legibility": "not_applicable"
          },
          {
            "number": 6,
            "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": 8,
            "label": "helm console",
            "category": "furniture",
            "position_hint": "centered against the forward wall beneath the windshield bank",
            "base_layer_decision": "base_persistent_fixture",
            "render_role": "not_applicable",
            "top_down_legibility": "not_applicable"
          },
          {
            "number": 9,
            "label": "steering wheel",
            "category": "prop",
            "position_hint": "center of the aft-facing edge of the helm console",
            "base_layer_decision": "base_persistent_fixture",
            "render_role": "not_applicable",
            "top_down_legibility": "not_applicable"
          },
          {
            "number": 10,
            "label": "throttle control",
            "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": 11,
            "label": "navigation display",
            "category": "prop",
            "position_hint": "built into the port side of the helm console",
            "base_layer_decision": "base_persistent_fixture",
            "render_role": "not_applicable",
            "top_down_legibility": "not_applicable"
          },
          {
            "number": 12,
            "label": "fixed operator seat",
            "category": "furniture",
            "position_hint": "immediately aft of the steering wheel, aligned with the vessel centerline",
            "base_layer_decision": "base_persistent_furniture",
            "render_role": "not_applicable",
            "top_down_legibility": "not_applicable"
          }
        ],
        "transient_markers_to_describe": [
          {
            "number": 13,
            "label": "old photograph",
            "category": "prop",
            "position_hint": "held within the starboard side of the central circulation area during the evidence presentation",
            "base_layer_decision": "state_overlay_transient_object",
            "render_role": "not_applicable",
            "top_down_legibility": "not_applicable"
          }
        ],
        "ignored_state_overlay_markers": [
          {
            "number": 14,
            "label": "subjective circular distortion cluster",
            "category": "prop",
            "position_hint": "one contiguous patch in the perceived space above the forward console",
            "base_layer_decision": "state_overlay_plot_cue",
            "render_role": "not_applicable",
            "top_down_legibility": "not_applicable"
          },
          {
            "number": 15,
            "label": "subjective red circle apparition",
            "category": "prop",
            "position_hint": "single perceived spot near the navigation display",
            "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)"
        ]
      },
      "L18B03": {
        "bg_id": "L18B03",
        "fp_id": "fp_l18_wheelhouse",
        "use_numbered_elements": [
          1,
          2,
          4,
          5,
          6,
          8,
          9,
          10,
          11,
          12,
          14,
          15
        ],
        "ignore_numbered_elements": [
          13
        ],
        "base_markers_to_reference": [
          {
            "number": 1,
            "label": "central circulation area",
            "category": "area",
            "position_hint": "narrow central strip between the helm console and aft threshold",
            "base_layer_decision": "base_structural_unit",
            "render_role": "not_applicable",
            "top_down_legibility": "not_applicable"
          },
          {
            "number": 2,
            "label": "forward helm area",
            "category": "area",
            "position_hint": "forward third of the enclosed wheelhouse",
            "base_layer_decision": "base_structural_unit",
            "render_role": "not_applicable",
            "top_down_legibility": "not_applicable"
          },
          {
            "number": 4,
            "label": "forward windshield bank",
            "category": "opening",
            "position_hint": "single contiguous run across the forward wall",
            "base_layer_decision": "base_opening",
            "render_role": "not_applicable",
            "top_down_legibility": "not_applicable"
          },
          {
            "number": 5,
            "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": 6,
            "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": 8,
            "label": "helm console",
            "category": "furniture",
            "position_hint": "centered against the forward wall beneath the windshield bank",
            "base_layer_decision": "base_persistent_fixture",
            "render_role": "not_applicable",
            "top_down_legibility": "not_applicable"
          },
          {
            "number": 9,
            "label": "steering wheel",
            "category": "prop",
            "position_hint": "center of the aft-facing edge of the helm console",
            "base_layer_decision": "base_persistent_fixture",
            "render_role": "not_applicable",
            "top_down_legibility": "not_applicable"
          },
          {
            "number": 10,
            "label": "throttle control",
            "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": 11,
            "label": "navigation display",
            "category": "prop",
            "position_hint": "built into the port side of the helm console",
            "base_layer_decision": "base_persistent_fixture",
            "render_role": "not_applicable",
            "top_down_legibility": "not_applicable"
          },
          {
            "number": 12,
            "label": "fixed operator seat",
            "category": "furniture",
            "position_hint": "immediately aft of the steering wheel, aligned with the vessel centerline",
            "base_layer_decision": "base_persistent_furniture",
            "render_role": "not_applicable",
            "top_down_legibility": "not_applicable"
          }
        ],
        "transient_markers_to_describe": [
          {
            "number": 14,
            "label": "subjective circular distortion cluster",
            "category": "prop",
            "position_hint": "one contiguous patch in the perceived space above the forward console",
            "base_layer_decision": "state_overlay_plot_cue",
            "render_role": "not_applicable",
            "top_down_legibility": "not_applicable"
          },
          {
            "number": 15,
            "label": "subjective red circle apparition",
            "category": "prop",
            "position_hint": "single perceived spot near the navigation display",
            "base_layer_decision": "state_overlay_plot_cue",
            "render_role": "not_applicable",
            "top_down_legibility": "not_applicable"
          }
        ],
        "ignored_state_overlay_markers": [
          {
            "number": 13,
            "label": "old photograph",
            "category": "prop",
            "position_hint": "held within the starboard side of the central circulation area during the evidence presentation",
            "base_layer_decision": "state_overlay_transient_object",
            "render_role": "not_applicable",
            "top_down_legibility": "not_applicable"
          }
        ],
        "target_unit_marker_numbers": [
          1,
          2
        ],
        "dominant_target_unit_marker_number": null,
        "clean_background_expected": false,
        "diagnostics": [
          "multiple base_structural_unit markers in use_numbered_elements ([1, 2]); dominant_target_unit_marker_number left empty (W19B-1 lock — no lexical disambiguation)"
        ]
      }
    }
  },
  "step_id": "floor_plan_overlay_payload",
  "run_id": "98d50082-e4ff-4e53-a3a3-2e28c849f5d2",
  "resolved_model": "gpt",
  "updated_at": "2026-07-23T11:55:25.673809+00:00",
  "project_config_snapshot": {}
}