{
  "status": "completed",
  "applicable_count": 1,
  "completed_count": 1,
  "failed_count": 0,
  "schema_version": 1,
  "config_hash": "5d2891ceb277be8d",
  "data": {
    "overlays": {
      "L152B02": {
        "bg_id": "L152B02",
        "fp_id": "fp_living_room",
        "use_numbered_elements": [
          1,
          2,
          3,
          11,
          12
        ],
        "ignore_numbered_elements": [],
        "base_markers_to_reference": [
          {
            "number": 1,
            "label": "Living room",
            "category": "area",
            "position_hint": "Center and east of the ground-floor plan",
            "base_layer_decision": "base_structural_unit",
            "render_role": "not_applicable",
            "top_down_legibility": "not_applicable"
          },
          {
            "number": 2,
            "label": "Full-height operable glazing",
            "category": "opening",
            "position_hint": "Eastern portion of the living room's south exterior wall",
            "base_layer_decision": "base_opening",
            "render_role": "not_applicable",
            "top_down_legibility": "not_applicable"
          },
          {
            "number": 3,
            "label": "Exterior approach",
            "category": "area",
            "position_hint": "Outside the south facade, connecting the entrance and glazed opening",
            "base_layer_decision": "base_structural_unit",
            "render_role": "not_applicable",
            "top_down_legibility": "not_applicable"
          }
        ],
        "transient_markers_to_describe": [
          {
            "number": 11,
            "label": "Fallen damaged humanoid robot",
            "category": "prop",
            "position_hint": "Living-room floor immediately inside the south glazing; damaged head covering exposes silver-colored metal, without human blood",
            "base_layer_decision": "state_overlay_transient_object",
            "render_role": "not_applicable",
            "top_down_legibility": "not_applicable"
          },
          {
            "number": 12,
            "label": "Glazing open state",
            "category": "opening",
            "position_hint": "Operable panel of number 2, open during the intrusion",
            "base_layer_decision": "state_overlay_plot_cue",
            "render_role": "not_applicable",
            "top_down_legibility": "not_applicable"
          }
        ],
        "ignored_state_overlay_markers": [],
        "target_unit_marker_numbers": [
          1,
          3
        ],
        "dominant_target_unit_marker_number": null,
        "clean_background_expected": false,
        "diagnostics": [
          "multiple base_structural_unit markers in use_numbered_elements ([1, 3]); dominant_target_unit_marker_number left empty (W19B-1 lock — no lexical disambiguation)"
        ]
      },
      "L159B01": {
        "bg_id": "L159B01",
        "fp_id": "fp_refugee_court_interior",
        "use_numbered_elements": [
          1,
          2,
          4,
          5,
          6,
          7
        ],
        "ignore_numbered_elements": [],
        "base_markers_to_reference": [
          {
            "number": 1,
            "label": "Courtroom",
            "category": "area",
            "position_hint": "entire rectangular interior; marker near west wall at mid-room",
            "base_layer_decision": "base_structural_unit",
            "render_role": "not_applicable",
            "top_down_legibility": "not_applicable"
          },
          {
            "number": 2,
            "label": "Entry threshold",
            "category": "area",
            "position_hint": "southwest corner, immediately inside entrance",
            "base_layer_decision": "base_structural_unit",
            "render_role": "not_applicable",
            "top_down_legibility": "not_applicable"
          },
          {
            "number": 4,
            "label": "Open front floor",
            "category": "area",
            "position_hint": "central room, directly south of table and connected to its east and west sides",
            "base_layer_decision": "base_structural_unit",
            "render_role": "not_applicable",
            "top_down_legibility": "not_applicable"
          },
          {
            "number": 5,
            "label": "Table and stamping surface",
            "category": "furniture",
            "position_hint": "northern work zone, long axis east-west; eastern tabletop kept clear for stamping",
            "base_layer_decision": "base_persistent_furniture",
            "render_role": "not_applicable",
            "top_down_legibility": "not_applicable"
          },
          {
            "number": 6,
            "label": "Judge's chair",
            "category": "furniture",
            "position_hint": "north of table, centered behind it and facing south",
            "base_layer_decision": "base_persistent_furniture",
            "render_role": "not_applicable",
            "top_down_legibility": "not_applicable"
          }
        ],
        "transient_markers_to_describe": [
          {
            "number": 7,
            "label": "Working document stacks",
            "category": "prop",
            "position_hint": "western portion of tabletop number 5; retain stacks rather than scattering them across the room",
            "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)"
        ]
      },
      "L161B01": {
        "bg_id": "L161B01",
        "fp_id": "fp_refugee_court_rubbish_site",
        "use_numbered_elements": [
          1,
          2,
          3,
          4,
          5,
          6
        ],
        "ignore_numbered_elements": [],
        "base_markers_to_reference": [
          {
            "number": 1,
            "label": "Courthouse footprint edge",
            "category": "area",
            "position_hint": "cropped strip along the east boundary; exterior wall runs north-south",
            "base_layer_decision": "base_structural_unit",
            "render_role": "not_applicable",
            "top_down_legibility": "not_applicable"
          },
          {
            "number": 2,
            "label": "Side passage",
            "category": "area",
            "position_hint": "immediately west of the courthouse wall, extending north-south",
            "base_layer_decision": "base_structural_unit",
            "render_role": "not_applicable",
            "top_down_legibility": "not_applicable"
          },
          {
            "number": 3,
            "label": "Open ground pocket",
            "category": "area",
            "position_hint": "center of yard, west of and directly connected to the side passage",
            "base_layer_decision": "base_structural_unit",
            "render_role": "not_applicable",
            "top_down_legibility": "not_applicable"
          },
          {
            "number": 4,
            "label": "Northwest rubbish heap",
            "category": "area",
            "position_hint": "northwest of the open ground pocket",
            "base_layer_decision": "base_structural_unit",
            "render_role": "not_applicable",
            "top_down_legibility": "not_applicable"
          },
          {
            "number": 5,
            "label": "West rubbish heap",
            "category": "area",
            "position_hint": "west of the open ground pocket",
            "base_layer_decision": "base_structural_unit",
            "render_role": "not_applicable",
            "top_down_legibility": "not_applicable"
          },
          {
            "number": 6,
            "label": "Southwest rubbish heap",
            "category": "area",
            "position_hint": "southwest of the open ground pocket, leaving its east side accessible",
            "base_layer_decision": "base_structural_unit",
            "render_role": "not_applicable",
            "top_down_legibility": "not_applicable"
          }
        ],
        "transient_markers_to_describe": [],
        "ignored_state_overlay_markers": [],
        "target_unit_marker_numbers": [
          1,
          2,
          3,
          4,
          5,
          6
        ],
        "dominant_target_unit_marker_number": null,
        "clean_background_expected": true,
        "diagnostics": [
          "multiple base_structural_unit markers in use_numbered_elements ([1, 2, 3, 4, 5, 6]); dominant_target_unit_marker_number left empty (W19B-1 lock — no lexical disambiguation)"
        ]
      },
      "L162B01": {
        "bg_id": "L162B01",
        "fp_id": "fp_backstreet_restaurant",
        "use_numbered_elements": [
          1,
          2,
          5,
          6,
          7,
          8
        ],
        "ignore_numbered_elements": [],
        "base_markers_to_reference": [
          {
            "number": 1,
            "label": "Shared circulation area",
            "category": "area",
            "position_hint": "Main west and central floor, connecting entrance to rear seating",
            "base_layer_decision": "base_structural_unit",
            "render_role": "not_applicable",
            "top_down_legibility": "not_applicable"
          },
          {
            "number": 2,
            "label": "Secluded seating zone",
            "category": "area",
            "position_hint": "Northeast rear corner, open to the shared circulation area",
            "base_layer_decision": "base_structural_unit",
            "render_role": "not_applicable",
            "top_down_legibility": "not_applicable"
          },
          {
            "number": 5,
            "label": "Transaction table",
            "category": "furniture",
            "position_hint": "Within the northeast seating zone, between the facing chairs",
            "base_layer_decision": "base_persistent_furniture",
            "render_role": "not_applicable",
            "top_down_legibility": "not_applicable"
          },
          {
            "number": 6,
            "label": "Rear facing chair",
            "category": "furniture",
            "position_hint": "North side of the table, facing south, with clearance to the rear wall",
            "base_layer_decision": "base_persistent_furniture",
            "render_role": "not_applicable",
            "top_down_legibility": "not_applicable"
          },
          {
            "number": 7,
            "label": "Entrance-side facing chair",
            "category": "furniture",
            "position_hint": "South side of the table, facing north, accessible from the west circulation area",
            "base_layer_decision": "base_persistent_furniture",
            "render_role": "not_applicable",
            "top_down_legibility": "not_applicable"
          }
        ],
        "transient_markers_to_describe": [
          {
            "number": 8,
            "label": "Money envelope",
            "category": "prop",
            "position_hint": "Transaction tabletop between the facing seats; exact position and handling follow the shot moment",
            "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)"
        ]
      },
      "L166B03": {
        "bg_id": "L166B03",
        "fp_id": "fp_container_interior",
        "use_numbered_elements": [
          1,
          2,
          3,
          5,
          7,
          8,
          9,
          11,
          12,
          13,
          14
        ],
        "ignore_numbered_elements": [
          15
        ],
        "base_markers_to_reference": [
          {
            "number": 1,
            "label": "Container enclosure",
            "category": "area",
            "position_hint": "Entire elongated rectangular dwelling; marker at northwest perimeter",
            "base_layer_decision": "base_structural_unit",
            "render_role": "not_applicable",
            "top_down_legibility": "not_applicable"
          },
          {
            "number": 2,
            "label": "Shared dining area",
            "category": "area",
            "position_hint": "Western three quarters of the interior, north of the circulation strip",
            "base_layer_decision": "base_structural_unit",
            "render_role": "not_applicable",
            "top_down_legibility": "not_applicable"
          },
          {
            "number": 3,
            "label": "Entry circulation strip",
            "category": "area",
            "position_hint": "South side of shared interior, linking exterior entrance to private-room doorway",
            "base_layer_decision": "base_structural_unit",
            "render_role": "not_applicable",
            "top_down_legibility": "not_applicable"
          },
          {
            "number": 5,
            "label": "Exterior entrance",
            "category": "opening",
            "position_hint": "West short wall, near its south end",
            "base_layer_decision": "base_opening",
            "render_role": "not_applicable",
            "top_down_legibility": "not_applicable"
          },
          {
            "number": 7,
            "label": "Dining table",
            "category": "furniture",
            "position_hint": "Northern half of the shared area, clear of the south circulation strip",
            "base_layer_decision": "base_persistent_furniture",
            "render_role": "not_applicable",
            "top_down_legibility": "not_applicable"
          },
          {
            "number": 8,
            "label": "West dining seat",
            "category": "furniture",
            "position_hint": "West end of the dining table",
            "base_layer_decision": "base_persistent_furniture",
            "render_role": "not_applicable",
            "top_down_legibility": "not_applicable"
          },
          {
            "number": 9,
            "label": "East dining seat",
            "category": "furniture",
            "position_hint": "East end of the dining table, opposite the west seat",
            "base_layer_decision": "base_persistent_furniture",
            "render_role": "not_applicable",
            "top_down_legibility": "not_applicable"
          }
        ],
        "transient_markers_to_describe": [
          {
            "number": 11,
            "label": "Tabletop candle",
            "category": "prop",
            "position_hint": "Near the center of the dining table; nighttime overlay only",
            "base_layer_decision": "state_overlay_transient_object",
            "render_role": "not_applicable",
            "top_down_legibility": "not_applicable"
          },
          {
            "number": 12,
            "label": "Meal setting",
            "category": "prop",
            "position_hint": "West end of dining tabletop, in front of the west seat",
            "base_layer_decision": "state_overlay_transient_object",
            "render_role": "not_applicable",
            "top_down_legibility": "not_applicable"
          },
          {
            "number": 13,
            "label": "Sewing supplies and garment",
            "category": "prop",
            "position_hint": "East side of dining tabletop, beside the east seat",
            "base_layer_decision": "state_overlay_transient_object",
            "render_role": "not_applicable",
            "top_down_legibility": "not_applicable"
          },
          {
            "number": 14,
            "label": "Opened medicine container",
            "category": "prop",
            "position_hint": "Dining tabletop near the east seat, separate from the meal setting",
            "base_layer_decision": "state_overlay_transient_object",
            "render_role": "not_applicable",
            "top_down_legibility": "not_applicable"
          }
        ],
        "ignored_state_overlay_markers": [
          {
            "number": 15,
            "label": "Localized broken vase fragments",
            "category": "prop",
            "position_hint": "Shared-area floor west of the table, with a few fragments pushed toward the north wall",
            "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)"
        ]
      },
      "L166B04": {
        "bg_id": "L166B04",
        "fp_id": "fp_container_interior",
        "use_numbered_elements": [
          1,
          2,
          3,
          5,
          7,
          8,
          9,
          11,
          12,
          13,
          14
        ],
        "ignore_numbered_elements": [
          15
        ],
        "base_markers_to_reference": [
          {
            "number": 1,
            "label": "Container enclosure",
            "category": "area",
            "position_hint": "Entire elongated rectangular dwelling; marker at northwest perimeter",
            "base_layer_decision": "base_structural_unit",
            "render_role": "not_applicable",
            "top_down_legibility": "not_applicable"
          },
          {
            "number": 2,
            "label": "Shared dining area",
            "category": "area",
            "position_hint": "Western three quarters of the interior, north of the circulation strip",
            "base_layer_decision": "base_structural_unit",
            "render_role": "not_applicable",
            "top_down_legibility": "not_applicable"
          },
          {
            "number": 3,
            "label": "Entry circulation strip",
            "category": "area",
            "position_hint": "South side of shared interior, linking exterior entrance to private-room doorway",
            "base_layer_decision": "base_structural_unit",
            "render_role": "not_applicable",
            "top_down_legibility": "not_applicable"
          },
          {
            "number": 5,
            "label": "Exterior entrance",
            "category": "opening",
            "position_hint": "West short wall, near its south end",
            "base_layer_decision": "base_opening",
            "render_role": "not_applicable",
            "top_down_legibility": "not_applicable"
          },
          {
            "number": 7,
            "label": "Dining table",
            "category": "furniture",
            "position_hint": "Northern half of the shared area, clear of the south circulation strip",
            "base_layer_decision": "base_persistent_furniture",
            "render_role": "not_applicable",
            "top_down_legibility": "not_applicable"
          },
          {
            "number": 8,
            "label": "West dining seat",
            "category": "furniture",
            "position_hint": "West end of the dining table",
            "base_layer_decision": "base_persistent_furniture",
            "render_role": "not_applicable",
            "top_down_legibility": "not_applicable"
          },
          {
            "number": 9,
            "label": "East dining seat",
            "category": "furniture",
            "position_hint": "East end of the dining table, opposite the west seat",
            "base_layer_decision": "base_persistent_furniture",
            "render_role": "not_applicable",
            "top_down_legibility": "not_applicable"
          }
        ],
        "transient_markers_to_describe": [
          {
            "number": 11,
            "label": "Tabletop candle",
            "category": "prop",
            "position_hint": "Near the center of the dining table; nighttime overlay only",
            "base_layer_decision": "state_overlay_transient_object",
            "render_role": "not_applicable",
            "top_down_legibility": "not_applicable"
          },
          {
            "number": 12,
            "label": "Meal setting",
            "category": "prop",
            "position_hint": "West end of dining tabletop, in front of the west seat",
            "base_layer_decision": "state_overlay_transient_object",
            "render_role": "not_applicable",
            "top_down_legibility": "not_applicable"
          },
          {
            "number": 13,
            "label": "Sewing supplies and garment",
            "category": "prop",
            "position_hint": "East side of dining tabletop, beside the east seat",
            "base_layer_decision": "state_overlay_transient_object",
            "render_role": "not_applicable",
            "top_down_legibility": "not_applicable"
          },
          {
            "number": 14,
            "label": "Opened medicine container",
            "category": "prop",
            "position_hint": "Dining tabletop near the east seat, separate from the meal setting",
            "base_layer_decision": "state_overlay_transient_object",
            "render_role": "not_applicable",
            "top_down_legibility": "not_applicable"
          }
        ],
        "ignored_state_overlay_markers": [
          {
            "number": 15,
            "label": "Localized broken vase fragments",
            "category": "prop",
            "position_hint": "Shared-area floor west of the table, with a few fragments pushed toward the north wall",
            "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)"
        ]
      },
      "L166B02": {
        "bg_id": "L166B02",
        "fp_id": "fp_container_interior",
        "use_numbered_elements": [
          1,
          2,
          3,
          5,
          7,
          8,
          9,
          15
        ],
        "ignore_numbered_elements": [
          11,
          12,
          13,
          14
        ],
        "base_markers_to_reference": [
          {
            "number": 1,
            "label": "Container enclosure",
            "category": "area",
            "position_hint": "Entire elongated rectangular dwelling; marker at northwest perimeter",
            "base_layer_decision": "base_structural_unit",
            "render_role": "not_applicable",
            "top_down_legibility": "not_applicable"
          },
          {
            "number": 2,
            "label": "Shared dining area",
            "category": "area",
            "position_hint": "Western three quarters of the interior, north of the circulation strip",
            "base_layer_decision": "base_structural_unit",
            "render_role": "not_applicable",
            "top_down_legibility": "not_applicable"
          },
          {
            "number": 3,
            "label": "Entry circulation strip",
            "category": "area",
            "position_hint": "South side of shared interior, linking exterior entrance to private-room doorway",
            "base_layer_decision": "base_structural_unit",
            "render_role": "not_applicable",
            "top_down_legibility": "not_applicable"
          },
          {
            "number": 5,
            "label": "Exterior entrance",
            "category": "opening",
            "position_hint": "West short wall, near its south end",
            "base_layer_decision": "base_opening",
            "render_role": "not_applicable",
            "top_down_legibility": "not_applicable"
          },
          {
            "number": 7,
            "label": "Dining table",
            "category": "furniture",
            "position_hint": "Northern half of the shared area, clear of the south circulation strip",
            "base_layer_decision": "base_persistent_furniture",
            "render_role": "not_applicable",
            "top_down_legibility": "not_applicable"
          },
          {
            "number": 8,
            "label": "West dining seat",
            "category": "furniture",
            "position_hint": "West end of the dining table",
            "base_layer_decision": "base_persistent_furniture",
            "render_role": "not_applicable",
            "top_down_legibility": "not_applicable"
          },
          {
            "number": 9,
            "label": "East dining seat",
            "category": "furniture",
            "position_hint": "East end of the dining table, opposite the west seat",
            "base_layer_decision": "base_persistent_furniture",
            "render_role": "not_applicable",
            "top_down_legibility": "not_applicable"
          }
        ],
        "transient_markers_to_describe": [
          {
            "number": 15,
            "label": "Localized broken vase fragments",
            "category": "prop",
            "position_hint": "Shared-area floor west of the table, with a few fragments pushed toward the north wall",
            "base_layer_decision": "state_overlay_transient_object",
            "render_role": "not_applicable",
            "top_down_legibility": "not_applicable"
          }
        ],
        "ignored_state_overlay_markers": [
          {
            "number": 11,
            "label": "Tabletop candle",
            "category": "prop",
            "position_hint": "Near the center of the dining table; nighttime overlay only",
            "base_layer_decision": "state_overlay_transient_object",
            "render_role": "not_applicable",
            "top_down_legibility": "not_applicable"
          },
          {
            "number": 12,
            "label": "Meal setting",
            "category": "prop",
            "position_hint": "West end of dining tabletop, in front of the west seat",
            "base_layer_decision": "state_overlay_transient_object",
            "render_role": "not_applicable",
            "top_down_legibility": "not_applicable"
          },
          {
            "number": 13,
            "label": "Sewing supplies and garment",
            "category": "prop",
            "position_hint": "East side of dining tabletop, beside the east seat",
            "base_layer_decision": "state_overlay_transient_object",
            "render_role": "not_applicable",
            "top_down_legibility": "not_applicable"
          },
          {
            "number": 14,
            "label": "Opened medicine container",
            "category": "prop",
            "position_hint": "Dining tabletop near the east seat, separate from the meal setting",
            "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)"
        ]
      },
      "L166B01": {
        "bg_id": "L166B01",
        "fp_id": "fp_container_interior",
        "use_numbered_elements": [
          1,
          2,
          3,
          5,
          7,
          8,
          9
        ],
        "ignore_numbered_elements": [
          11,
          12,
          13,
          14,
          15
        ],
        "base_markers_to_reference": [
          {
            "number": 1,
            "label": "Container enclosure",
            "category": "area",
            "position_hint": "Entire elongated rectangular dwelling; marker at northwest perimeter",
            "base_layer_decision": "base_structural_unit",
            "render_role": "not_applicable",
            "top_down_legibility": "not_applicable"
          },
          {
            "number": 2,
            "label": "Shared dining area",
            "category": "area",
            "position_hint": "Western three quarters of the interior, north of the circulation strip",
            "base_layer_decision": "base_structural_unit",
            "render_role": "not_applicable",
            "top_down_legibility": "not_applicable"
          },
          {
            "number": 3,
            "label": "Entry circulation strip",
            "category": "area",
            "position_hint": "South side of shared interior, linking exterior entrance to private-room doorway",
            "base_layer_decision": "base_structural_unit",
            "render_role": "not_applicable",
            "top_down_legibility": "not_applicable"
          },
          {
            "number": 5,
            "label": "Exterior entrance",
            "category": "opening",
            "position_hint": "West short wall, near its south end",
            "base_layer_decision": "base_opening",
            "render_role": "not_applicable",
            "top_down_legibility": "not_applicable"
          },
          {
            "number": 7,
            "label": "Dining table",
            "category": "furniture",
            "position_hint": "Northern half of the shared area, clear of the south circulation strip",
            "base_layer_decision": "base_persistent_furniture",
            "render_role": "not_applicable",
            "top_down_legibility": "not_applicable"
          },
          {
            "number": 8,
            "label": "West dining seat",
            "category": "furniture",
            "position_hint": "West end of the dining table",
            "base_layer_decision": "base_persistent_furniture",
            "render_role": "not_applicable",
            "top_down_legibility": "not_applicable"
          },
          {
            "number": 9,
            "label": "East dining seat",
            "category": "furniture",
            "position_hint": "East end of the dining table, opposite the west seat",
            "base_layer_decision": "base_persistent_furniture",
            "render_role": "not_applicable",
            "top_down_legibility": "not_applicable"
          }
        ],
        "transient_markers_to_describe": [],
        "ignored_state_overlay_markers": [
          {
            "number": 11,
            "label": "Tabletop candle",
            "category": "prop",
            "position_hint": "Near the center of the dining table; nighttime overlay only",
            "base_layer_decision": "state_overlay_transient_object",
            "render_role": "not_applicable",
            "top_down_legibility": "not_applicable"
          },
          {
            "number": 12,
            "label": "Meal setting",
            "category": "prop",
            "position_hint": "West end of dining tabletop, in front of the west seat",
            "base_layer_decision": "state_overlay_transient_object",
            "render_role": "not_applicable",
            "top_down_legibility": "not_applicable"
          },
          {
            "number": 13,
            "label": "Sewing supplies and garment",
            "category": "prop",
            "position_hint": "East side of dining tabletop, beside the east seat",
            "base_layer_decision": "state_overlay_transient_object",
            "render_role": "not_applicable",
            "top_down_legibility": "not_applicable"
          },
          {
            "number": 14,
            "label": "Opened medicine container",
            "category": "prop",
            "position_hint": "Dining tabletop near the east seat, separate from the meal setting",
            "base_layer_decision": "state_overlay_transient_object",
            "render_role": "not_applicable",
            "top_down_legibility": "not_applicable"
          },
          {
            "number": 15,
            "label": "Localized broken vase fragments",
            "category": "prop",
            "position_hint": "Shared-area floor west of the table, with a few fragments pushed toward the north wall",
            "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)"
        ]
      },
      "L168B03": {
        "bg_id": "L168B03",
        "fp_id": "fp_matsuda_junk_shop",
        "use_numbered_elements": [
          1,
          3,
          4,
          5,
          8,
          9,
          10,
          11,
          12,
          13
        ],
        "ignore_numbered_elements": [
          14,
          15
        ],
        "base_markers_to_reference": [
          {
            "number": 1,
            "label": "Customer aisle and inspection space",
            "category": "area",
            "position_hint": "Center of shop, extending from threshold to the front of the repair desk",
            "base_layer_decision": "base_structural_unit",
            "render_role": "not_applicable",
            "top_down_legibility": "not_applicable"
          },
          {
            "number": 3,
            "label": "West storage strip",
            "category": "area",
            "position_hint": "Along the west wall, beside the central aisle",
            "base_layer_decision": "base_structural_unit",
            "render_role": "not_applicable",
            "top_down_legibility": "not_applicable"
          },
          {
            "number": 4,
            "label": "East storage strip",
            "category": "area",
            "position_hint": "Along the east wall, ending before the rear desk passage",
            "base_layer_decision": "base_structural_unit",
            "render_role": "not_applicable",
            "top_down_legibility": "not_applicable"
          },
          {
            "number": 5,
            "label": "Repair work zone",
            "category": "area",
            "position_hint": "North end of shop, encompassing the desk and working strip behind it",
            "base_layer_decision": "base_structural_unit",
            "render_role": "not_applicable",
            "top_down_legibility": "not_applicable"
          },
          {
            "number": 8,
            "label": "Appliance stock pile",
            "category": "prop",
            "position_hint": "Within the west storage strip, outside the circulation path",
            "base_layer_decision": "base_persistent_furniture",
            "render_role": "not_applicable",
            "top_down_legibility": "not_applicable"
          },
          {
            "number": 9,
            "label": "Salvage stock pile",
            "category": "prop",
            "position_hint": "Within the east storage strip, outside the circulation path",
            "base_layer_decision": "base_persistent_furniture",
            "render_role": "not_applicable",
            "top_down_legibility": "not_applicable"
          },
          {
            "number": 10,
            "label": "Repair desk",
            "category": "furniture",
            "position_hint": "Across the north work zone, with access behind and around its east end",
            "base_layer_decision": "base_persistent_furniture",
            "render_role": "not_applicable",
            "top_down_legibility": "not_applicable"
          },
          {
            "number": 11,
            "label": "Desktop computer station",
            "category": "prop",
            "position_hint": "West end of repair desk, oriented toward the working strip behind it",
            "base_layer_decision": "base_persistent_fixture",
            "render_role": "not_applicable",
            "top_down_legibility": "not_applicable"
          },
          {
            "number": 12,
            "label": "Old desk telephone",
            "category": "prop",
            "position_hint": "East end of repair desk, within reach from the rear working strip",
            "base_layer_decision": "base_persistent_fixture",
            "render_role": "not_applicable",
            "top_down_legibility": "not_applicable"
          },
          {
            "number": 13,
            "label": "Fixed tool organizer",
            "category": "furniture",
            "position_hint": "Against the north wall behind the repair desk",
            "base_layer_decision": "base_persistent_fixture",
            "render_role": "not_applicable",
            "top_down_legibility": "not_applicable"
          }
        ],
        "transient_markers_to_describe": [],
        "ignored_state_overlay_markers": [
          {
            "number": 14,
            "label": "Television under repair",
            "category": "prop",
            "position_hint": "On the west-central portion of the repair desk, beside the computer and clear of the telephone",
            "base_layer_decision": "state_overlay_transient_object",
            "render_role": "not_applicable",
            "top_down_legibility": "not_applicable"
          },
          {
            "number": 15,
            "label": "Figure slumped over desk",
            "category": "prop",
            "position_hint": "At the center-right portion of the repair desk, leaning onto its surface from the rear working position; non-graphic, with no added blood or damage",
            "base_layer_decision": "state_overlay_plot_cue",
            "render_role": "not_applicable",
            "top_down_legibility": "not_applicable"
          }
        ],
        "target_unit_marker_numbers": [
          1,
          3,
          4,
          5
        ],
        "dominant_target_unit_marker_number": null,
        "clean_background_expected": true,
        "diagnostics": [
          "multiple base_structural_unit markers in use_numbered_elements ([1, 3, 4, 5]); dominant_target_unit_marker_number left empty (W19B-1 lock — no lexical disambiguation)"
        ]
      },
      "L168B02": {
        "bg_id": "L168B02",
        "fp_id": "fp_matsuda_junk_shop",
        "use_numbered_elements": [
          1,
          2,
          3,
          4,
          5,
          6,
          7,
          8,
          9,
          10,
          14
        ],
        "ignore_numbered_elements": [
          15
        ],
        "base_markers_to_reference": [
          {
            "number": 1,
            "label": "Customer aisle and inspection space",
            "category": "area",
            "position_hint": "Center of shop, extending from threshold to the front of the repair desk",
            "base_layer_decision": "base_structural_unit",
            "render_role": "not_applicable",
            "top_down_legibility": "not_applicable"
          },
          {
            "number": 2,
            "label": "Entrance threshold",
            "category": "area",
            "position_hint": "South end of shop, immediately inside the entrance",
            "base_layer_decision": "base_structural_unit",
            "render_role": "not_applicable",
            "top_down_legibility": "not_applicable"
          },
          {
            "number": 3,
            "label": "West storage strip",
            "category": "area",
            "position_hint": "Along the west wall, beside the central aisle",
            "base_layer_decision": "base_structural_unit",
            "render_role": "not_applicable",
            "top_down_legibility": "not_applicable"
          },
          {
            "number": 4,
            "label": "East storage strip",
            "category": "area",
            "position_hint": "Along the east wall, ending before the rear desk passage",
            "base_layer_decision": "base_structural_unit",
            "render_role": "not_applicable",
            "top_down_legibility": "not_applicable"
          },
          {
            "number": 5,
            "label": "Repair work zone",
            "category": "area",
            "position_hint": "North end of shop, encompassing the desk and working strip behind it",
            "base_layer_decision": "base_structural_unit",
            "render_role": "not_applicable",
            "top_down_legibility": "not_applicable"
          },
          {
            "number": 6,
            "label": "Exterior approach",
            "category": "area",
            "position_hint": "Small strip directly south of the shop entrance",
            "base_layer_decision": "base_structural_unit",
            "render_role": "not_applicable",
            "top_down_legibility": "not_applicable"
          },
          {
            "number": 7,
            "label": "Shop entrance opening",
            "category": "opening",
            "position_hint": "Centered in the south wall",
            "base_layer_decision": "base_opening",
            "render_role": "not_applicable",
            "top_down_legibility": "not_applicable"
          },
          {
            "number": 8,
            "label": "Appliance stock pile",
            "category": "prop",
            "position_hint": "Within the west storage strip, outside the circulation path",
            "base_layer_decision": "base_persistent_furniture",
            "render_role": "not_applicable",
            "top_down_legibility": "not_applicable"
          },
          {
            "number": 9,
            "label": "Salvage stock pile",
            "category": "prop",
            "position_hint": "Within the east storage strip, outside the circulation path",
            "base_layer_decision": "base_persistent_furniture",
            "render_role": "not_applicable",
            "top_down_legibility": "not_applicable"
          },
          {
            "number": 10,
            "label": "Repair desk",
            "category": "furniture",
            "position_hint": "Across the north work zone, with access behind and around its east end",
            "base_layer_decision": "base_persistent_furniture",
            "render_role": "not_applicable",
            "top_down_legibility": "not_applicable"
          }
        ],
        "transient_markers_to_describe": [
          {
            "number": 14,
            "label": "Television under repair",
            "category": "prop",
            "position_hint": "On the west-central portion of the repair desk, beside the computer and clear of the telephone",
            "base_layer_decision": "state_overlay_transient_object",
            "render_role": "not_applicable",
            "top_down_legibility": "not_applicable"
          }
        ],
        "ignored_state_overlay_markers": [
          {
            "number": 15,
            "label": "Figure slumped over desk",
            "category": "prop",
            "position_hint": "At the center-right portion of the repair desk, leaning onto its surface from the rear working position; non-graphic, with no added blood or damage",
            "base_layer_decision": "state_overlay_plot_cue",
            "render_role": "not_applicable",
            "top_down_legibility": "not_applicable"
          }
        ],
        "target_unit_marker_numbers": [
          1,
          2,
          3,
          4,
          5,
          6
        ],
        "dominant_target_unit_marker_number": null,
        "clean_background_expected": false,
        "diagnostics": [
          "multiple base_structural_unit markers in use_numbered_elements ([1, 2, 3, 4, 5, 6]); dominant_target_unit_marker_number left empty (W19B-1 lock — no lexical disambiguation)"
        ]
      },
      "L168B01": {
        "bg_id": "L168B01",
        "fp_id": "fp_matsuda_junk_shop",
        "use_numbered_elements": [
          1,
          3,
          4,
          5,
          8,
          9,
          10,
          11,
          12,
          13,
          14,
          15
        ],
        "ignore_numbered_elements": [],
        "base_markers_to_reference": [
          {
            "number": 1,
            "label": "Customer aisle and inspection space",
            "category": "area",
            "position_hint": "Center of shop, extending from threshold to the front of the repair desk",
            "base_layer_decision": "base_structural_unit",
            "render_role": "not_applicable",
            "top_down_legibility": "not_applicable"
          },
          {
            "number": 3,
            "label": "West storage strip",
            "category": "area",
            "position_hint": "Along the west wall, beside the central aisle",
            "base_layer_decision": "base_structural_unit",
            "render_role": "not_applicable",
            "top_down_legibility": "not_applicable"
          },
          {
            "number": 4,
            "label": "East storage strip",
            "category": "area",
            "position_hint": "Along the east wall, ending before the rear desk passage",
            "base_layer_decision": "base_structural_unit",
            "render_role": "not_applicable",
            "top_down_legibility": "not_applicable"
          },
          {
            "number": 5,
            "label": "Repair work zone",
            "category": "area",
            "position_hint": "North end of shop, encompassing the desk and working strip behind it",
            "base_layer_decision": "base_structural_unit",
            "render_role": "not_applicable",
            "top_down_legibility": "not_applicable"
          },
          {
            "number": 8,
            "label": "Appliance stock pile",
            "category": "prop",
            "position_hint": "Within the west storage strip, outside the circulation path",
            "base_layer_decision": "base_persistent_furniture",
            "render_role": "not_applicable",
            "top_down_legibility": "not_applicable"
          },
          {
            "number": 9,
            "label": "Salvage stock pile",
            "category": "prop",
            "position_hint": "Within the east storage strip, outside the circulation path",
            "base_layer_decision": "base_persistent_furniture",
            "render_role": "not_applicable",
            "top_down_legibility": "not_applicable"
          },
          {
            "number": 10,
            "label": "Repair desk",
            "category": "furniture",
            "position_hint": "Across the north work zone, with access behind and around its east end",
            "base_layer_decision": "base_persistent_furniture",
            "render_role": "not_applicable",
            "top_down_legibility": "not_applicable"
          },
          {
            "number": 11,
            "label": "Desktop computer station",
            "category": "prop",
            "position_hint": "West end of repair desk, oriented toward the working strip behind it",
            "base_layer_decision": "base_persistent_fixture",
            "render_role": "not_applicable",
            "top_down_legibility": "not_applicable"
          },
          {
            "number": 12,
            "label": "Old desk telephone",
            "category": "prop",
            "position_hint": "East end of repair desk, within reach from the rear working strip",
            "base_layer_decision": "base_persistent_fixture",
            "render_role": "not_applicable",
            "top_down_legibility": "not_applicable"
          },
          {
            "number": 13,
            "label": "Fixed tool organizer",
            "category": "furniture",
            "position_hint": "Against the north wall behind the repair desk",
            "base_layer_decision": "base_persistent_fixture",
            "render_role": "not_applicable",
            "top_down_legibility": "not_applicable"
          }
        ],
        "transient_markers_to_describe": [
          {
            "number": 14,
            "label": "Television under repair",
            "category": "prop",
            "position_hint": "On the west-central portion of the repair desk, beside the computer and clear of the telephone",
            "base_layer_decision": "state_overlay_transient_object",
            "render_role": "not_applicable",
            "top_down_legibility": "not_applicable"
          },
          {
            "number": 15,
            "label": "Figure slumped over desk",
            "category": "prop",
            "position_hint": "At the center-right portion of the repair desk, leaning onto its surface from the rear working position; non-graphic, with no added blood or damage",
            "base_layer_decision": "state_overlay_plot_cue",
            "render_role": "not_applicable",
            "top_down_legibility": "not_applicable"
          }
        ],
        "ignored_state_overlay_markers": [],
        "target_unit_marker_numbers": [
          1,
          3,
          4,
          5
        ],
        "dominant_target_unit_marker_number": null,
        "clean_background_expected": false,
        "diagnostics": [
          "multiple base_structural_unit markers in use_numbered_elements ([1, 3, 4, 5]); dominant_target_unit_marker_number left empty (W19B-1 lock — no lexical disambiguation)"
        ]
      },
      "L169B01": {
        "bg_id": "L169B01",
        "fp_id": "fp_container_wash_yard",
        "use_numbered_elements": [
          1,
          2,
          3,
          4,
          5,
          6,
          7,
          8,
          9
        ],
        "ignore_numbered_elements": [],
        "base_markers_to_reference": [
          {
            "number": 1,
            "label": "Container dwelling footprint",
            "category": "area",
            "position_hint": "Northern edge; long axis east-west, frontage facing south",
            "base_layer_decision": "base_structural_unit",
            "render_role": "not_applicable",
            "top_down_legibility": "not_applicable"
          },
          {
            "number": 2,
            "label": "Dwelling entrance",
            "category": "opening",
            "position_hint": "South-facing container wall, slightly west of center",
            "base_layer_decision": "base_opening",
            "render_role": "not_applicable",
            "top_down_legibility": "not_applicable"
          },
          {
            "number": 3,
            "label": "Entrance threshold",
            "category": "area",
            "position_hint": "Immediately south of number 2, flush with the yard",
            "base_layer_decision": "base_structural_unit",
            "render_role": "not_applicable",
            "top_down_legibility": "not_applicable"
          },
          {
            "number": 4,
            "label": "Outdoor washing area",
            "category": "area",
            "position_hint": "East-central yard, southeast of the dwelling entrance",
            "base_layer_decision": "base_structural_unit",
            "render_role": "not_applicable",
            "top_down_legibility": "not_applicable"
          },
          {
            "number": 5,
            "label": "Connecting open yard",
            "category": "area",
            "position_hint": "West-central yard, linking the threshold, washing area, and southern margin",
            "base_layer_decision": "base_structural_unit",
            "render_role": "not_applicable",
            "top_down_legibility": "not_applicable"
          },
          {
            "number": 6,
            "label": "Distant viewing margin",
            "category": "area",
            "position_hint": "Southern yard edge, with the observation position toward the southwest",
            "base_layer_decision": "base_structural_unit",
            "render_role": "not_applicable",
            "top_down_legibility": "not_applicable"
          }
        ],
        "transient_markers_to_describe": [
          {
            "number": 7,
            "label": "Loose washing hose",
            "category": "prop",
            "position_hint": "Within number 4, nozzle directed across the washing area; supply connection unspecified",
            "base_layer_decision": "state_overlay_transient_object",
            "render_role": "not_applicable",
            "top_down_legibility": "not_applicable"
          },
          {
            "number": 8,
            "label": "Active water spray",
            "category": "prop",
            "position_hint": "Across number 4 from the hose nozzle toward the washing subject",
            "base_layer_decision": "state_overlay_plot_cue",
            "render_role": "not_applicable",
            "top_down_legibility": "not_applicable"
          },
          {
            "number": 9,
            "label": "Wet earth and washed dirt",
            "category": "area",
            "position_hint": "Ground within number 4 and its immediate southern edge; localized runoff without an invented drain",
            "base_layer_decision": "state_overlay_plot_cue",
            "render_role": "not_applicable",
            "top_down_legibility": "not_applicable"
          }
        ],
        "ignored_state_overlay_markers": [],
        "target_unit_marker_numbers": [
          1,
          3,
          4,
          5,
          6
        ],
        "dominant_target_unit_marker_number": null,
        "clean_background_expected": false,
        "diagnostics": [
          "multiple base_structural_unit markers in use_numbered_elements ([1, 3, 4, 5, 6]); dominant_target_unit_marker_number left empty (W19B-1 lock — no lexical disambiguation)"
        ]
      },
      "L170B01": {
        "bg_id": "L170B01",
        "fp_id": "fp_container_interior",
        "use_numbered_elements": [
          1,
          3,
          4,
          5,
          6,
          10
        ],
        "ignore_numbered_elements": [
          11,
          12,
          13,
          14,
          15
        ],
        "base_markers_to_reference": [
          {
            "number": 1,
            "label": "Container enclosure",
            "category": "area",
            "position_hint": "Entire elongated rectangular dwelling; marker at northwest perimeter",
            "base_layer_decision": "base_structural_unit",
            "render_role": "not_applicable",
            "top_down_legibility": "not_applicable"
          },
          {
            "number": 3,
            "label": "Entry circulation strip",
            "category": "area",
            "position_hint": "South side of shared interior, linking exterior entrance to private-room doorway",
            "base_layer_decision": "base_structural_unit",
            "render_role": "not_applicable",
            "top_down_legibility": "not_applicable"
          },
          {
            "number": 4,
            "label": "Private sleeping room",
            "category": "area",
            "position_hint": "Eastern end, behind the transverse partition",
            "base_layer_decision": "base_structural_unit",
            "render_role": "not_applicable",
            "top_down_legibility": "not_applicable"
          },
          {
            "number": 5,
            "label": "Exterior entrance",
            "category": "opening",
            "position_hint": "West short wall, near its south end",
            "base_layer_decision": "base_opening",
            "render_role": "not_applicable",
            "top_down_legibility": "not_applicable"
          },
          {
            "number": 6,
            "label": "Private-room doorway",
            "category": "opening",
            "position_hint": "Southern end of the transverse partition, aligned with the entry route",
            "base_layer_decision": "base_opening",
            "render_role": "not_applicable",
            "top_down_legibility": "not_applicable"
          },
          {
            "number": 10,
            "label": "Low sleeping platform",
            "category": "furniture",
            "position_hint": "Against the private room's north wall, pillow at east end",
            "base_layer_decision": "base_persistent_furniture",
            "render_role": "not_applicable",
            "top_down_legibility": "not_applicable"
          }
        ],
        "transient_markers_to_describe": [],
        "ignored_state_overlay_markers": [
          {
            "number": 11,
            "label": "Tabletop candle",
            "category": "prop",
            "position_hint": "Near the center of the dining table; nighttime overlay only",
            "base_layer_decision": "state_overlay_transient_object",
            "render_role": "not_applicable",
            "top_down_legibility": "not_applicable"
          },
          {
            "number": 12,
            "label": "Meal setting",
            "category": "prop",
            "position_hint": "West end of dining tabletop, in front of the west seat",
            "base_layer_decision": "state_overlay_transient_object",
            "render_role": "not_applicable",
            "top_down_legibility": "not_applicable"
          },
          {
            "number": 13,
            "label": "Sewing supplies and garment",
            "category": "prop",
            "position_hint": "East side of dining tabletop, beside the east seat",
            "base_layer_decision": "state_overlay_transient_object",
            "render_role": "not_applicable",
            "top_down_legibility": "not_applicable"
          },
          {
            "number": 14,
            "label": "Opened medicine container",
            "category": "prop",
            "position_hint": "Dining tabletop near the east seat, separate from the meal setting",
            "base_layer_decision": "state_overlay_transient_object",
            "render_role": "not_applicable",
            "top_down_legibility": "not_applicable"
          },
          {
            "number": 15,
            "label": "Localized broken vase fragments",
            "category": "prop",
            "position_hint": "Shared-area floor west of the table, with a few fragments pushed toward the north wall",
            "base_layer_decision": "state_overlay_transient_object",
            "render_role": "not_applicable",
            "top_down_legibility": "not_applicable"
          }
        ],
        "target_unit_marker_numbers": [
          1,
          3,
          4
        ],
        "dominant_target_unit_marker_number": null,
        "clean_background_expected": true,
        "diagnostics": [
          "multiple base_structural_unit markers in use_numbered_elements ([1, 3, 4]); dominant_target_unit_marker_number left empty (W19B-1 lock — no lexical disambiguation)"
        ]
      },
      "L171B01": {
        "bg_id": "L171B01",
        "fp_id": "fp_militia_command_room",
        "use_numbered_elements": [
          1,
          2,
          3,
          4,
          5,
          6,
          9
        ],
        "ignore_numbered_elements": [],
        "base_markers_to_reference": [
          {
            "number": 1,
            "label": "Office enclosure",
            "category": "area",
            "position_hint": "entire rectangular room; marker beside east perimeter",
            "base_layer_decision": "base_structural_unit",
            "render_role": "not_applicable",
            "top_down_legibility": "not_applicable"
          },
          {
            "number": 2,
            "label": "Command desk",
            "category": "furniture",
            "position_hint": "middle of room, long axis east-west",
            "base_layer_decision": "base_persistent_furniture",
            "render_role": "not_applicable",
            "top_down_legibility": "not_applicable"
          },
          {
            "number": 3,
            "label": "Desktop speakerphone",
            "category": "prop",
            "position_hint": "southern half of desktop, within commander's reach",
            "base_layer_decision": "base_persistent_fixture",
            "render_role": "not_applicable",
            "top_down_legibility": "not_applicable"
          },
          {
            "number": 4,
            "label": "Visitor standing zone",
            "category": "area",
            "position_hint": "north of desk, between desk and north wall",
            "base_layer_decision": "base_structural_unit",
            "render_role": "not_applicable",
            "top_down_legibility": "not_applicable"
          },
          {
            "number": 5,
            "label": "Bare rear wall",
            "category": "area",
            "position_hint": "north boundary directly behind visitor standing zone",
            "base_layer_decision": "base_structural_unit",
            "render_role": "not_applicable",
            "top_down_legibility": "not_applicable"
          },
          {
            "number": 6,
            "label": "Working and bowing clearance",
            "category": "area",
            "position_hint": "south of desk, with unobstructed floor and access around desk ends",
            "base_layer_decision": "base_structural_unit",
            "render_role": "not_applicable",
            "top_down_legibility": "not_applicable"
          }
        ],
        "transient_markers_to_describe": [
          {
            "number": 9,
            "label": "Embedded knife",
            "category": "prop",
            "position_hint": "north wall beside visitor's head position, slightly offset from the desk-to-visitor axis; post-throw shots only",
            "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,
          4,
          5,
          6
        ],
        "dominant_target_unit_marker_number": null,
        "clean_background_expected": false,
        "diagnostics": [
          "multiple base_structural_unit markers in use_numbered_elements ([1, 4, 5, 6]); dominant_target_unit_marker_number left empty (W19B-1 lock — no lexical disambiguation)"
        ]
      },
      "L173B01": {
        "bg_id": "L173B01",
        "fp_id": "fp_detention_visiting_room",
        "use_numbered_elements": [
          1,
          2,
          3,
          4,
          5,
          6,
          7
        ],
        "ignore_numbered_elements": [],
        "base_markers_to_reference": [
          {
            "number": 1,
            "label": "Visiting room",
            "category": "area",
            "position_hint": "entire rectangular room; marker in the open northeast portion",
            "base_layer_decision": "base_structural_unit",
            "render_role": "not_applicable",
            "top_down_legibility": "not_applicable"
          },
          {
            "number": 2,
            "label": "Entry circulation",
            "category": "area",
            "position_hint": "southwest threshold continuing along the west side toward the central table",
            "base_layer_decision": "base_structural_unit",
            "render_role": "not_applicable",
            "top_down_legibility": "not_applicable"
          },
          {
            "number": 3,
            "label": "Entry door",
            "category": "opening",
            "position_hint": "south wall near the southwest corner, swinging inward toward the west wall",
            "base_layer_decision": "base_opening",
            "render_role": "not_applicable",
            "top_down_legibility": "not_applicable"
          },
          {
            "number": 4,
            "label": "Interview table",
            "category": "furniture",
            "position_hint": "room center, long axis east-west",
            "base_layer_decision": "base_persistent_furniture",
            "render_role": "not_applicable",
            "top_down_legibility": "not_applicable"
          },
          {
            "number": 5,
            "label": "Detainee seat",
            "category": "furniture",
            "position_hint": "centered immediately north of number 4, facing south",
            "base_layer_decision": "base_persistent_furniture",
            "render_role": "not_applicable",
            "top_down_legibility": "not_applicable"
          },
          {
            "number": 6,
            "label": "Visitor seat",
            "category": "furniture",
            "position_hint": "centered immediately south of number 4, facing north",
            "base_layer_decision": "base_persistent_furniture",
            "render_role": "not_applicable",
            "top_down_legibility": "not_applicable"
          }
        ],
        "transient_markers_to_describe": [
          {
            "number": 7,
            "label": "Identification photograph",
            "category": "prop",
            "position_hint": "on the tabletop of number 4 during the interview; depicted subject remains confined to the photograph",
            "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)"
        ]
      },
      "L175B01": {
        "bg_id": "L175B01",
        "fp_id": "fp_l175_sewer",
        "use_numbered_elements": [
          1,
          2,
          4,
          5,
          6,
          7
        ],
        "ignore_numbered_elements": [],
        "base_markers_to_reference": [
          {
            "number": 1,
            "label": "Access landing",
            "category": "area",
            "position_hint": "bottom center, directly south of the main tunnel",
            "base_layer_decision": "base_structural_unit",
            "render_role": "not_applicable",
            "top_down_legibility": "not_applicable"
          },
          {
            "number": 2,
            "label": "Fixed access ladder",
            "category": "prop",
            "position_hint": "west edge of the access landing, beneath the access opening",
            "base_layer_decision": "base_persistent_fixture",
            "render_role": "not_applicable",
            "top_down_legibility": "not_applicable"
          },
          {
            "number": 4,
            "label": "Main running tunnel",
            "category": "area",
            "position_hint": "central north-south passage between the access landing and fork",
            "base_layer_decision": "base_structural_unit",
            "render_role": "not_applicable",
            "top_down_legibility": "not_applicable"
          },
          {
            "number": 5,
            "label": "Two-way fork junction",
            "category": "area",
            "position_hint": "upper center, where the main tunnel divides",
            "base_layer_decision": "base_structural_unit",
            "render_role": "not_applicable",
            "top_down_legibility": "not_applicable"
          },
          {
            "number": 6,
            "label": "Left branch",
            "category": "area",
            "position_hint": "extends northwest from the fork beyond the mapped scope",
            "base_layer_decision": "base_structural_unit",
            "render_role": "not_applicable",
            "top_down_legibility": "not_applicable"
          },
          {
            "number": 7,
            "label": "Right branch",
            "category": "area",
            "position_hint": "extends northeast from the fork beyond the mapped scope",
            "base_layer_decision": "base_structural_unit",
            "render_role": "not_applicable",
            "top_down_legibility": "not_applicable"
          }
        ],
        "transient_markers_to_describe": [],
        "ignored_state_overlay_markers": [],
        "target_unit_marker_numbers": [
          1,
          4,
          5,
          6,
          7
        ],
        "dominant_target_unit_marker_number": null,
        "clean_background_expected": true,
        "diagnostics": [
          "multiple base_structural_unit markers in use_numbered_elements ([1, 4, 5, 6, 7]); dominant_target_unit_marker_number left empty (W19B-1 lock — no lexical disambiguation)"
        ]
      },
      "L176B01": {
        "bg_id": "L176B01",
        "fp_id": "fp_l176_flooded_sewer",
        "use_numbered_elements": [
          1,
          2,
          3,
          4,
          5,
          6,
          7,
          8,
          9,
          10,
          11,
          12
        ],
        "ignore_numbered_elements": [],
        "base_markers_to_reference": [
          {
            "number": 1,
            "label": "Main sewer passage",
            "category": "area",
            "position_hint": "central north-south trunk between the rear junction and southern outlet",
            "base_layer_decision": "base_structural_unit",
            "render_role": "not_applicable",
            "top_down_legibility": "not_applicable"
          },
          {
            "number": 2,
            "label": "Rear tunnel",
            "category": "area",
            "position_hint": "north end, continuing beyond the feeder junction",
            "base_layer_decision": "base_structural_unit",
            "render_role": "not_applicable",
            "top_down_legibility": "not_applicable"
          },
          {
            "number": 3,
            "label": "West feeder passage",
            "category": "area",
            "position_hint": "west of the northern junction",
            "base_layer_decision": "base_structural_unit",
            "render_role": "not_applicable",
            "top_down_legibility": "not_applicable"
          },
          {
            "number": 4,
            "label": "East feeder passage",
            "category": "area",
            "position_hint": "east of the northern junction",
            "base_layer_decision": "base_structural_unit",
            "render_role": "not_applicable",
            "top_down_legibility": "not_applicable"
          },
          {
            "number": 5,
            "label": "Exterior receiving area",
            "category": "area",
            "position_hint": "immediately south of the sewer outlet",
            "base_layer_decision": "base_structural_unit",
            "render_role": "not_applicable",
            "top_down_legibility": "not_applicable"
          },
          {
            "number": 6,
            "label": "Rear continuation opening",
            "category": "opening",
            "position_hint": "north end of the main passage, connecting to the rear tunnel",
            "base_layer_decision": "base_opening",
            "render_role": "not_applicable",
            "top_down_legibility": "not_applicable"
          },
          {
            "number": 7,
            "label": "West feeder mouth",
            "category": "opening",
            "position_hint": "west wall of the main passage at the northern junction",
            "base_layer_decision": "base_opening",
            "render_role": "not_applicable",
            "top_down_legibility": "not_applicable"
          },
          {
            "number": 8,
            "label": "East feeder mouth",
            "category": "opening",
            "position_hint": "east wall of the main passage at the northern junction",
            "base_layer_decision": "base_opening",
            "render_role": "not_applicable",
            "top_down_legibility": "not_applicable"
          },
          {
            "number": 9,
            "label": "Sewer outlet",
            "category": "opening",
            "position_hint": "south end of the main passage, opening directly into the exterior receiving area",
            "base_layer_decision": "base_opening",
            "render_role": "not_applicable",
            "top_down_legibility": "not_applicable"
          },
          {
            "number": 10,
            "label": "Maintenance access opening",
            "category": "opening",
            "position_hint": "overhead access beside the east wall, south of the feeder junction",
            "base_layer_decision": "base_opening",
            "render_role": "not_applicable",
            "top_down_legibility": "not_applicable"
          },
          {
            "number": 11,
            "label": "Fixed access ladder",
            "category": "prop",
            "position_hint": "east wall beneath the maintenance access opening",
            "base_layer_decision": "base_persistent_fixture",
            "render_role": "not_applicable",
            "top_down_legibility": "not_applicable"
          }
        ],
        "transient_markers_to_describe": [
          {
            "number": 12,
            "label": "Seawater inundation",
            "category": "area",
            "position_hint": "entering through the rear and lateral mouths, filling the main passage and extending through the outlet; surge and submerged phases vary by shot",
            "base_layer_decision": "state_overlay_plot_cue",
            "render_role": "not_applicable",
            "top_down_legibility": "not_applicable"
          }
        ],
        "ignored_state_overlay_markers": [],
        "target_unit_marker_numbers": [
          1,
          2,
          3,
          4,
          5
        ],
        "dominant_target_unit_marker_number": null,
        "clean_background_expected": false,
        "diagnostics": [
          "multiple base_structural_unit markers in use_numbered_elements ([1, 2, 3, 4, 5]); dominant_target_unit_marker_number left empty (W19B-1 lock — no lexical disambiguation)"
        ]
      },
      "L177B01": {
        "bg_id": "L177B01",
        "fp_id": "fp_l177_road_manhole",
        "use_numbered_elements": [
          1,
          2,
          3,
          4,
          5,
          6,
          7,
          8,
          9,
          10,
          11,
          12,
          13,
          14
        ],
        "ignore_numbered_elements": [],
        "base_markers_to_reference": [
          {
            "number": 1,
            "label": "Roadway",
            "category": "area",
            "position_hint": "East-west corridor across the middle and lower portion of the plan",
            "base_layer_decision": "base_structural_unit",
            "render_role": "not_applicable",
            "top_down_legibility": "not_applicable"
          },
          {
            "number": 2,
            "label": "Northern roadside margin",
            "category": "area",
            "position_hint": "Narrow strip along the north edge of the roadway, interrupted by the alley mouth",
            "base_layer_decision": "base_structural_unit",
            "render_role": "not_applicable",
            "top_down_legibility": "not_applicable"
          },
          {
            "number": 3,
            "label": "Southern roadside margin",
            "category": "area",
            "position_hint": "Continuous narrow strip along the south edge of the roadway",
            "base_layer_decision": "base_structural_unit",
            "render_role": "not_applicable",
            "top_down_legibility": "not_applicable"
          },
          {
            "number": 4,
            "label": "Adjoining alley",
            "category": "area",
            "position_hint": "Extends north from the roadway slightly left of center",
            "base_layer_decision": "base_structural_unit",
            "render_role": "not_applicable",
            "top_down_legibility": "not_applicable"
          },
          {
            "number": 5,
            "label": "Western corner building",
            "category": "area",
            "position_hint": "Cropped footprint west of the alley and north of the road",
            "base_layer_decision": "base_structural_unit",
            "render_role": "not_applicable",
            "top_down_legibility": "not_applicable"
          },
          {
            "number": 6,
            "label": "Eastern corner building",
            "category": "area",
            "position_hint": "Cropped footprint east of the alley and north of the road",
            "base_layer_decision": "base_structural_unit",
            "render_role": "not_applicable",
            "top_down_legibility": "not_applicable"
          },
          {
            "number": 7,
            "label": "Manhole access",
            "category": "opening",
            "position_hint": "Northern portion of the roadway west of the alley mouth",
            "base_layer_decision": "base_opening",
            "render_role": "not_applicable",
            "top_down_legibility": "not_applicable"
          },
          {
            "number": 8,
            "label": "Alley mouth",
            "category": "opening",
            "position_hint": "Open connection between the southern end of the alley and the northern road edge",
            "base_layer_decision": "base_opening",
            "render_role": "not_applicable",
            "top_down_legibility": "not_applicable"
          },
          {
            "number": 9,
            "label": "Western streetlight",
            "category": "prop",
            "position_hint": "Northern roadside margin west of the manhole",
            "base_layer_decision": "base_persistent_fixture",
            "render_role": "not_applicable",
            "top_down_legibility": "not_applicable"
          },
          {
            "number": 10,
            "label": "Corner streetlight",
            "category": "prop",
            "position_hint": "Northern roadside margin immediately east of the alley mouth",
            "base_layer_decision": "base_persistent_fixture",
            "render_role": "not_applicable",
            "top_down_legibility": "not_applicable"
          },
          {
            "number": 11,
            "label": "Approach streetlight",
            "category": "prop",
            "position_hint": "Northern roadside margin farther east along the straight vehicle approach",
            "base_layer_decision": "base_persistent_fixture",
            "render_role": "not_applicable",
            "top_down_legibility": "not_applicable"
          }
        ],
        "transient_markers_to_describe": [
          {
            "number": 12,
            "label": "Arriving large vehicle",
            "category": "prop",
            "position_hint": "Eastern roadway approaching westward, stopping just east of the alley-mouth alignment; allow roadside clearance for exit and boarding",
            "base_layer_decision": "state_overlay_transient_object",
            "render_role": "not_applicable",
            "top_down_legibility": "not_applicable"
          },
          {
            "number": 13,
            "label": "Headlight backlighting",
            "category": "prop",
            "position_hint": "Projects westward from the arriving vehicle across the roadway, leaving the recessed alley comparatively dark",
            "base_layer_decision": "state_overlay_plot_cue",
            "render_role": "not_applicable",
            "top_down_legibility": "not_applicable"
          },
          {
            "number": 14,
            "label": "Streetlight flickering",
            "category": "prop",
            "position_hint": "Changing operating states at streetlights 9, 10, and 11 along the road movement 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,
          4,
          5,
          6
        ],
        "dominant_target_unit_marker_number": null,
        "clean_background_expected": false,
        "diagnostics": [
          "multiple base_structural_unit markers in use_numbered_elements ([1, 2, 3, 4, 5, 6]); dominant_target_unit_marker_number left empty (W19B-1 lock — no lexical disambiguation)"
        ]
      },
      "L179B01": {
        "bg_id": "L179B01",
        "fp_id": "fp_rescue_van_interior",
        "use_numbered_elements": [
          1,
          2,
          3,
          4,
          5,
          8,
          9,
          10,
          11,
          12,
          14
        ],
        "ignore_numbered_elements": [],
        "base_markers_to_reference": [
          {
            "number": 1,
            "label": "Front cabin",
            "category": "area",
            "position_hint": "front portion of vehicle, at top of plan",
            "base_layer_decision": "base_structural_unit",
            "render_role": "not_applicable",
            "top_down_legibility": "not_applicable"
          },
          {
            "number": 2,
            "label": "Rear compartment",
            "category": "area",
            "position_hint": "connected compartment behind the front seats",
            "base_layer_decision": "base_structural_unit",
            "render_role": "not_applicable",
            "top_down_legibility": "not_applicable"
          },
          {
            "number": 3,
            "label": "Windshield",
            "category": "opening",
            "position_hint": "front boundary, spanning the cabin ahead of the dashboard",
            "base_layer_decision": "base_opening",
            "render_role": "not_applicable",
            "top_down_legibility": "not_applicable"
          },
          {
            "number": 4,
            "label": "Driver-side window",
            "category": "opening",
            "position_hint": "left cabin boundary beside driver seat, integrated into driver door",
            "base_layer_decision": "base_opening",
            "render_role": "not_applicable",
            "top_down_legibility": "not_applicable"
          },
          {
            "number": 5,
            "label": "Driver door",
            "category": "opening",
            "position_hint": "left cabin boundary beside driver seat",
            "base_layer_decision": "base_opening",
            "render_role": "not_applicable",
            "top_down_legibility": "not_applicable"
          },
          {
            "number": 8,
            "label": "Driver seat",
            "category": "furniture",
            "position_hint": "front-left cabin, behind steering wheel",
            "base_layer_decision": "base_persistent_furniture",
            "render_role": "not_applicable",
            "top_down_legibility": "not_applicable"
          },
          {
            "number": 9,
            "label": "Front passenger seat",
            "category": "furniture",
            "position_hint": "front-right cabin, alongside driver seat",
            "base_layer_decision": "base_persistent_furniture",
            "render_role": "not_applicable",
            "top_down_legibility": "not_applicable"
          },
          {
            "number": 10,
            "label": "Dashboard",
            "category": "prop",
            "position_hint": "transverse strip immediately behind windshield",
            "base_layer_decision": "base_persistent_fixture",
            "render_role": "not_applicable",
            "top_down_legibility": "not_applicable"
          },
          {
            "number": 11,
            "label": "Steering wheel",
            "category": "prop",
            "position_hint": "left side of dashboard, directly ahead of driver seat",
            "base_layer_decision": "base_persistent_fixture",
            "render_role": "not_applicable",
            "top_down_legibility": "not_applicable"
          },
          {
            "number": 12,
            "label": "Rear bench",
            "category": "furniture",
            "position_hint": "rear portion of compartment, facing toward windshield",
            "base_layer_decision": "base_persistent_furniture",
            "render_role": "not_applicable",
            "top_down_legibility": "not_applicable"
          }
        ],
        "transient_markers_to_describe": [
          {
            "number": 14,
            "label": "Scattered cargo boxes",
            "category": "prop",
            "position_hint": "sparsely distributed across rear seating and adjacent floor, leaving concealment gaps for three occupants; retain the same arrangement throughout this background",
            "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)"
        ]
      },
      "L180B02": {
        "bg_id": "L180B02",
        "fp_id": "fp_basement_prayer_room",
        "use_numbered_elements": [
          1,
          4,
          5,
          6,
          7,
          8,
          9,
          10,
          11,
          12,
          13,
          16
        ],
        "ignore_numbered_elements": [
          15
        ],
        "base_markers_to_reference": [
          {
            "number": 1,
            "label": "Prayer room",
            "category": "area",
            "position_hint": "main rectangular shared space",
            "base_layer_decision": "base_structural_unit",
            "render_role": "not_applicable",
            "top_down_legibility": "not_applicable"
          },
          {
            "number": 4,
            "label": "Wall cross",
            "category": "prop",
            "position_hint": "center of north wall",
            "base_layer_decision": "base_persistent_fixture",
            "render_role": "not_applicable",
            "top_down_legibility": "not_applicable"
          },
          {
            "number": 5,
            "label": "Small table",
            "category": "furniture",
            "position_hint": "slightly north of room center, south of the cross",
            "base_layer_decision": "base_persistent_furniture",
            "render_role": "not_applicable",
            "top_down_legibility": "not_applicable"
          },
          {
            "number": 6,
            "label": "West table chair",
            "category": "furniture",
            "position_hint": "west side of the small table",
            "base_layer_decision": "base_persistent_furniture",
            "render_role": "not_applicable",
            "top_down_legibility": "not_applicable"
          },
          {
            "number": 7,
            "label": "South table chair",
            "category": "furniture",
            "position_hint": "south side of the small table",
            "base_layer_decision": "base_persistent_furniture",
            "render_role": "not_applicable",
            "top_down_legibility": "not_applicable"
          },
          {
            "number": 8,
            "label": "Small reed organ",
            "category": "furniture",
            "position_hint": "east wall, north of center, keyboard facing west",
            "base_layer_decision": "base_persistent_furniture",
            "render_role": "not_applicable",
            "top_down_legibility": "not_applicable"
          },
          {
            "number": 9,
            "label": "Radio corner",
            "category": "area",
            "position_hint": "southeast corner, open to the main room",
            "base_layer_decision": "base_structural_unit",
            "render_role": "not_applicable",
            "top_down_legibility": "not_applicable"
          },
          {
            "number": 10,
            "label": "Radio home position",
            "category": "prop",
            "position_hint": "within the southeast radio corner; persistent equipment anchor, not a fixed mounting",
            "base_layer_decision": "base_persistent_furniture",
            "render_role": "not_applicable",
            "top_down_legibility": "not_applicable"
          },
          {
            "number": 11,
            "label": "West lantern anchor",
            "category": "prop",
            "position_hint": "west perimeter, north of the stair opening",
            "base_layer_decision": "base_persistent_furniture",
            "render_role": "not_applicable",
            "top_down_legibility": "not_applicable"
          },
          {
            "number": 12,
            "label": "East lantern anchor",
            "category": "prop",
            "position_hint": "east perimeter, between the organ and radio corner",
            "base_layer_decision": "base_persistent_furniture",
            "render_role": "not_applicable",
            "top_down_legibility": "not_applicable"
          },
          {
            "number": 13,
            "label": "Secret passage mouth",
            "category": "opening",
            "position_hint": "east wall at the northeast corner, north of the organ",
            "base_layer_decision": "base_opening",
            "render_role": "not_applicable",
            "top_down_legibility": "not_applicable"
          }
        ],
        "transient_markers_to_describe": [
          {
            "number": 16,
            "label": "Radio temporarily held",
            "category": "prop",
            "position_hint": "temporarily carried by its user in the table discussion area; replaces the radio at number 10 rather than duplicating it",
            "base_layer_decision": "state_overlay_transient_object",
            "render_role": "not_applicable",
            "top_down_legibility": "not_applicable"
          }
        ],
        "ignored_state_overlay_markers": [
          {
            "number": 15,
            "label": "Carried evacuation flashlight",
            "category": "prop",
            "position_hint": "moves with the evacuation leader toward the northeast passage mouth; no fixed storage location established",
            "base_layer_decision": "state_overlay_transient_object",
            "render_role": "not_applicable",
            "top_down_legibility": "not_applicable"
          }
        ],
        "target_unit_marker_numbers": [
          1,
          9
        ],
        "dominant_target_unit_marker_number": null,
        "clean_background_expected": false,
        "diagnostics": [
          "multiple base_structural_unit markers in use_numbered_elements ([1, 9]); dominant_target_unit_marker_number left empty (W19B-1 lock — no lexical disambiguation)"
        ]
      },
      "L182B01": {
        "bg_id": "L182B01",
        "fp_id": "fp_ground_floor_entrance",
        "use_numbered_elements": [
          1,
          2,
          3,
          4,
          5,
          6,
          7
        ],
        "ignore_numbered_elements": [],
        "base_markers_to_reference": [
          {
            "number": 1,
            "label": "Interior entrance",
            "category": "area",
            "position_hint": "Lower half of the plan, immediately inside the exterior doorway",
            "base_layer_decision": "base_structural_unit",
            "render_role": "not_applicable",
            "top_down_legibility": "not_applicable"
          },
          {
            "number": 2,
            "label": "Entrance threshold",
            "category": "area",
            "position_hint": "Centered shallow strip between the interior entrance and exterior approach",
            "base_layer_decision": "base_structural_unit",
            "render_role": "not_applicable",
            "top_down_legibility": "not_applicable"
          },
          {
            "number": 3,
            "label": "Exterior approach",
            "category": "area",
            "position_hint": "Upper half of the plan, directly outside the entrance",
            "base_layer_decision": "base_structural_unit",
            "render_role": "not_applicable",
            "top_down_legibility": "not_applicable"
          },
          {
            "number": 4,
            "label": "Doorway wall and jambs",
            "category": "area",
            "position_hint": "Across the middle of the plan, flanking the centered doorway",
            "base_layer_decision": "base_structural_unit",
            "render_role": "not_applicable",
            "top_down_legibility": "not_applicable"
          },
          {
            "number": 5,
            "label": "Hinged entrance door",
            "category": "opening",
            "position_hint": "Within the centered exterior doorway above the interior entrance",
            "base_layer_decision": "base_opening",
            "render_role": "not_applicable",
            "top_down_legibility": "not_applicable"
          },
          {
            "number": 6,
            "label": "Operable viewing hatch",
            "category": "opening",
            "position_hint": "Within the entrance door leaf, symbolically projected onto its plan glyph",
            "base_layer_decision": "base_opening",
            "render_role": "not_applicable",
            "top_down_legibility": "not_applicable"
          }
        ],
        "transient_markers_to_describe": [
          {
            "number": 7,
            "label": "Narrowly ajar door state",
            "category": "opening",
            "position_hint": "At the free edge of door 5, leaving a restricted sightline across threshold 2 toward exterior approach 3",
            "base_layer_decision": "state_overlay_plot_cue",
            "render_role": "not_applicable",
            "top_down_legibility": "not_applicable"
          }
        ],
        "ignored_state_overlay_markers": [],
        "target_unit_marker_numbers": [
          1,
          2,
          3,
          4
        ],
        "dominant_target_unit_marker_number": null,
        "clean_background_expected": false,
        "diagnostics": [
          "multiple base_structural_unit markers in use_numbered_elements ([1, 2, 3, 4]); dominant_target_unit_marker_number left empty (W19B-1 lock — no lexical disambiguation)"
        ]
      },
      "L180B01": {
        "bg_id": "L180B01",
        "fp_id": "fp_basement_prayer_room",
        "use_numbered_elements": [
          1,
          4,
          5,
          6,
          7,
          8,
          12,
          13,
          14,
          15
        ],
        "ignore_numbered_elements": [
          16
        ],
        "base_markers_to_reference": [
          {
            "number": 1,
            "label": "Prayer room",
            "category": "area",
            "position_hint": "main rectangular shared space",
            "base_layer_decision": "base_structural_unit",
            "render_role": "not_applicable",
            "top_down_legibility": "not_applicable"
          },
          {
            "number": 4,
            "label": "Wall cross",
            "category": "prop",
            "position_hint": "center of north wall",
            "base_layer_decision": "base_persistent_fixture",
            "render_role": "not_applicable",
            "top_down_legibility": "not_applicable"
          },
          {
            "number": 5,
            "label": "Small table",
            "category": "furniture",
            "position_hint": "slightly north of room center, south of the cross",
            "base_layer_decision": "base_persistent_furniture",
            "render_role": "not_applicable",
            "top_down_legibility": "not_applicable"
          },
          {
            "number": 6,
            "label": "West table chair",
            "category": "furniture",
            "position_hint": "west side of the small table",
            "base_layer_decision": "base_persistent_furniture",
            "render_role": "not_applicable",
            "top_down_legibility": "not_applicable"
          },
          {
            "number": 7,
            "label": "South table chair",
            "category": "furniture",
            "position_hint": "south side of the small table",
            "base_layer_decision": "base_persistent_furniture",
            "render_role": "not_applicable",
            "top_down_legibility": "not_applicable"
          },
          {
            "number": 8,
            "label": "Small reed organ",
            "category": "furniture",
            "position_hint": "east wall, north of center, keyboard facing west",
            "base_layer_decision": "base_persistent_furniture",
            "render_role": "not_applicable",
            "top_down_legibility": "not_applicable"
          },
          {
            "number": 12,
            "label": "East lantern anchor",
            "category": "prop",
            "position_hint": "east perimeter, between the organ and radio corner",
            "base_layer_decision": "base_persistent_furniture",
            "render_role": "not_applicable",
            "top_down_legibility": "not_applicable"
          },
          {
            "number": 13,
            "label": "Secret passage mouth",
            "category": "opening",
            "position_hint": "east wall at the northeast corner, north of the organ",
            "base_layer_decision": "base_opening",
            "render_role": "not_applicable",
            "top_down_legibility": "not_applicable"
          },
          {
            "number": 14,
            "label": "Secret passage stub",
            "category": "area",
            "position_hint": "immediately east of the northeast passage mouth; remainder outside plan scope",
            "base_layer_decision": "base_structural_unit",
            "render_role": "not_applicable",
            "top_down_legibility": "not_applicable"
          }
        ],
        "transient_markers_to_describe": [
          {
            "number": 15,
            "label": "Carried evacuation flashlight",
            "category": "prop",
            "position_hint": "moves with the evacuation leader toward the northeast passage mouth; no fixed storage location established",
            "base_layer_decision": "state_overlay_transient_object",
            "render_role": "not_applicable",
            "top_down_legibility": "not_applicable"
          }
        ],
        "ignored_state_overlay_markers": [
          {
            "number": 16,
            "label": "Radio temporarily held",
            "category": "prop",
            "position_hint": "temporarily carried by its user in the table discussion area; replaces the radio at number 10 rather than duplicating it",
            "base_layer_decision": "state_overlay_transient_object",
            "render_role": "not_applicable",
            "top_down_legibility": "not_applicable"
          }
        ],
        "target_unit_marker_numbers": [
          1,
          14
        ],
        "dominant_target_unit_marker_number": null,
        "clean_background_expected": false,
        "diagnostics": [
          "multiple base_structural_unit markers in use_numbered_elements ([1, 14]); dominant_target_unit_marker_number left empty (W19B-1 lock — no lexical disambiguation)"
        ]
      },
      "L189B01": {
        "bg_id": "L189B01",
        "fp_id": "fp_third_floor_detention_room",
        "use_numbered_elements": [
          1,
          2,
          3,
          4,
          5
        ],
        "ignore_numbered_elements": [],
        "base_markers_to_reference": [
          {
            "number": 1,
            "label": "Detention room",
            "category": "area",
            "position_hint": "main rectangular area south of the corridor; marker in its southwest open floor",
            "base_layer_decision": "base_structural_unit",
            "render_role": "not_applicable",
            "top_down_legibility": "not_applicable"
          },
          {
            "number": 2,
            "label": "Corridor segment",
            "category": "area",
            "position_hint": "east-west strip immediately north of the room",
            "base_layer_decision": "base_structural_unit",
            "render_role": "not_applicable",
            "top_down_legibility": "not_applicable"
          },
          {
            "number": 3,
            "label": "Hinged entry door",
            "category": "opening",
            "position_hint": "east end of the room's north wall, hinged on the east jamb and opening outward into the corridor",
            "base_layer_decision": "base_opening",
            "render_role": "not_applicable",
            "top_down_legibility": "not_applicable"
          },
          {
            "number": 4,
            "label": "Detainee chair",
            "category": "furniture",
            "position_hint": "west of the room center, facing east toward number 5",
            "base_layer_decision": "base_persistent_furniture",
            "render_role": "not_applicable",
            "top_down_legibility": "not_applicable"
          },
          {
            "number": 5,
            "label": "Questioner chair",
            "category": "furniture",
            "position_hint": "east of the room center, facing west toward number 4",
            "base_layer_decision": "base_persistent_furniture",
            "render_role": "not_applicable",
            "top_down_legibility": "not_applicable"
          }
        ],
        "transient_markers_to_describe": [],
        "ignored_state_overlay_markers": [],
        "target_unit_marker_numbers": [
          1,
          2
        ],
        "dominant_target_unit_marker_number": null,
        "clean_background_expected": true,
        "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)"
        ]
      },
      "L188B02": {
        "bg_id": "L188B02",
        "fp_id": "fp_third_floor_corridor",
        "use_numbered_elements": [
          1,
          3,
          5,
          9,
          11,
          12
        ],
        "ignore_numbered_elements": [
          13,
          14,
          15,
          16,
          17
        ],
        "base_markers_to_reference": [
          {
            "number": 1,
            "label": "Third-floor corridor",
            "category": "area",
            "position_hint": "Horizontal shared circulation zone across the center, extending west to east",
            "base_layer_decision": "base_structural_unit",
            "render_role": "not_applicable",
            "top_down_legibility": "not_applicable"
          },
          {
            "number": 3,
            "label": "Detention threshold",
            "category": "area",
            "position_hint": "At the junction of the detention room and corridor",
            "base_layer_decision": "base_structural_unit",
            "render_role": "not_applicable",
            "top_down_legibility": "not_applicable"
          },
          {
            "number": 5,
            "label": "Detention doorway",
            "category": "opening",
            "position_hint": "North wall of the detention room; west-jamb hinge and outward corridor swing",
            "base_layer_decision": "base_opening",
            "render_role": "not_applicable",
            "top_down_legibility": "not_applicable"
          },
          {
            "number": 9,
            "label": "Extinguisher station",
            "category": "prop",
            "position_hint": "Southwest corridor corner, west of the detention doorway; fixed storage position only",
            "base_layer_decision": "base_persistent_fixture",
            "render_role": "not_applicable",
            "top_down_legibility": "not_applicable"
          }
        ],
        "transient_markers_to_describe": [
          {
            "number": 11,
            "label": "Closed-door impact damage",
            "category": "prop",
            "position_hint": "Localized at the latch and handle of doorway 5 while its leaf remains closed",
            "base_layer_decision": "state_overlay_plot_cue",
            "render_role": "not_applicable",
            "top_down_legibility": "not_applicable"
          },
          {
            "number": 12,
            "label": "Displaced red extinguisher",
            "category": "prop",
            "position_hint": "At the handle-impact position beside doorway 5, removed from station 9",
            "base_layer_decision": "state_overlay_transient_object",
            "render_role": "not_applicable",
            "top_down_legibility": "not_applicable"
          }
        ],
        "ignored_state_overlay_markers": [
          {
            "number": 13,
            "label": "Broken handle and open door",
            "category": "prop",
            "position_hint": "Doorway 5, with broken handle hardware and leaf opened outward into the corridor",
            "base_layer_decision": "state_overlay_plot_cue",
            "render_role": "not_applicable",
            "top_down_legibility": "not_applicable"
          },
          {
            "number": 14,
            "label": "Intermittent red alarm",
            "category": "prop",
            "position_hint": "Originating at fixed alarm fixture 10; activation varies by shot",
            "base_layer_decision": "state_overlay_plot_cue",
            "render_role": "not_applicable",
            "top_down_legibility": "not_applicable"
          },
          {
            "number": 15,
            "label": "Approaching seawater",
            "category": "prop",
            "position_hint": "Outside the north-wall windows, visible before the impact",
            "base_layer_decision": "state_overlay_plot_cue",
            "render_role": "not_applicable",
            "top_down_legibility": "not_applicable"
          },
          {
            "number": 16,
            "label": "Shattered glazing and flying glass",
            "category": "prop",
            "position_hint": "At window openings 7 and 8 and immediately inside the north side of the corridor; frame positions retained",
            "base_layer_decision": "state_overlay_plot_cue",
            "render_role": "not_applicable",
            "top_down_legibility": "not_applicable"
          },
          {
            "number": 17,
            "label": "Incoming tsunami water",
            "category": "prop",
            "position_hint": "Entering through north-wall windows 7 and 8 and surging across corridor 1",
            "base_layer_decision": "state_overlay_plot_cue",
            "render_role": "not_applicable",
            "top_down_legibility": "not_applicable"
          }
        ],
        "target_unit_marker_numbers": [
          1,
          3
        ],
        "dominant_target_unit_marker_number": null,
        "clean_background_expected": false,
        "diagnostics": [
          "multiple base_structural_unit markers in use_numbered_elements ([1, 3]); dominant_target_unit_marker_number left empty (W19B-1 lock — no lexical disambiguation)"
        ]
      },
      "L188B01": {
        "bg_id": "L188B01",
        "fp_id": "fp_third_floor_corridor",
        "use_numbered_elements": [
          1,
          2,
          3,
          4,
          5,
          6,
          7,
          8,
          9,
          10,
          13,
          14,
          15
        ],
        "ignore_numbered_elements": [
          11,
          12,
          16,
          17
        ],
        "base_markers_to_reference": [
          {
            "number": 1,
            "label": "Third-floor corridor",
            "category": "area",
            "position_hint": "Horizontal shared circulation zone across the center, extending west to east",
            "base_layer_decision": "base_structural_unit",
            "render_role": "not_applicable",
            "top_down_legibility": "not_applicable"
          },
          {
            "number": 2,
            "label": "Detention room",
            "category": "area",
            "position_hint": "South of the corridor near its western third",
            "base_layer_decision": "base_structural_unit",
            "render_role": "not_applicable",
            "top_down_legibility": "not_applicable"
          },
          {
            "number": 3,
            "label": "Detention threshold",
            "category": "area",
            "position_hint": "At the junction of the detention room and corridor",
            "base_layer_decision": "base_structural_unit",
            "render_role": "not_applicable",
            "top_down_legibility": "not_applicable"
          },
          {
            "number": 4,
            "label": "Stairwell and landing",
            "category": "area",
            "position_hint": "East end of the corridor, with return flights continuing to higher floors",
            "base_layer_decision": "base_structural_unit",
            "render_role": "not_applicable",
            "top_down_legibility": "not_applicable"
          },
          {
            "number": 5,
            "label": "Detention doorway",
            "category": "opening",
            "position_hint": "North wall of the detention room; west-jamb hinge and outward corridor swing",
            "base_layer_decision": "base_opening",
            "render_role": "not_applicable",
            "top_down_legibility": "not_applicable"
          },
          {
            "number": 6,
            "label": "Stairwell access",
            "category": "opening",
            "position_hint": "Gap connecting the corridor's east end directly to the stair landing",
            "base_layer_decision": "base_opening",
            "render_role": "not_applicable",
            "top_down_legibility": "not_applicable"
          },
          {
            "number": 7,
            "label": "Western corridor window",
            "category": "opening",
            "position_hint": "North exterior wall, approximately opposite the detention doorway",
            "base_layer_decision": "base_opening",
            "render_role": "not_applicable",
            "top_down_legibility": "not_applicable"
          },
          {
            "number": 8,
            "label": "Eastern corridor window",
            "category": "opening",
            "position_hint": "North exterior wall, between the western window and stairwell",
            "base_layer_decision": "base_opening",
            "render_role": "not_applicable",
            "top_down_legibility": "not_applicable"
          },
          {
            "number": 9,
            "label": "Extinguisher station",
            "category": "prop",
            "position_hint": "Southwest corridor corner, west of the detention doorway; fixed storage position only",
            "base_layer_decision": "base_persistent_fixture",
            "render_role": "not_applicable",
            "top_down_legibility": "not_applicable"
          },
          {
            "number": 10,
            "label": "Alarm fixture",
            "category": "prop",
            "position_hint": "Corridor wall immediately east of the detention doorway",
            "base_layer_decision": "base_persistent_fixture",
            "render_role": "not_applicable",
            "top_down_legibility": "not_applicable"
          }
        ],
        "transient_markers_to_describe": [
          {
            "number": 13,
            "label": "Broken handle and open door",
            "category": "prop",
            "position_hint": "Doorway 5, with broken handle hardware and leaf opened outward into the corridor",
            "base_layer_decision": "state_overlay_plot_cue",
            "render_role": "not_applicable",
            "top_down_legibility": "not_applicable"
          },
          {
            "number": 14,
            "label": "Intermittent red alarm",
            "category": "prop",
            "position_hint": "Originating at fixed alarm fixture 10; activation varies by shot",
            "base_layer_decision": "state_overlay_plot_cue",
            "render_role": "not_applicable",
            "top_down_legibility": "not_applicable"
          },
          {
            "number": 15,
            "label": "Approaching seawater",
            "category": "prop",
            "position_hint": "Outside the north-wall windows, visible before the impact",
            "base_layer_decision": "state_overlay_plot_cue",
            "render_role": "not_applicable",
            "top_down_legibility": "not_applicable"
          }
        ],
        "ignored_state_overlay_markers": [
          {
            "number": 11,
            "label": "Closed-door impact damage",
            "category": "prop",
            "position_hint": "Localized at the latch and handle of doorway 5 while its leaf remains closed",
            "base_layer_decision": "state_overlay_plot_cue",
            "render_role": "not_applicable",
            "top_down_legibility": "not_applicable"
          },
          {
            "number": 12,
            "label": "Displaced red extinguisher",
            "category": "prop",
            "position_hint": "At the handle-impact position beside doorway 5, removed from station 9",
            "base_layer_decision": "state_overlay_transient_object",
            "render_role": "not_applicable",
            "top_down_legibility": "not_applicable"
          },
          {
            "number": 16,
            "label": "Shattered glazing and flying glass",
            "category": "prop",
            "position_hint": "At window openings 7 and 8 and immediately inside the north side of the corridor; frame positions retained",
            "base_layer_decision": "state_overlay_plot_cue",
            "render_role": "not_applicable",
            "top_down_legibility": "not_applicable"
          },
          {
            "number": 17,
            "label": "Incoming tsunami water",
            "category": "prop",
            "position_hint": "Entering through north-wall windows 7 and 8 and surging across corridor 1",
            "base_layer_decision": "state_overlay_plot_cue",
            "render_role": "not_applicable",
            "top_down_legibility": "not_applicable"
          }
        ],
        "target_unit_marker_numbers": [
          1,
          2,
          3,
          4
        ],
        "dominant_target_unit_marker_number": null,
        "clean_background_expected": false,
        "diagnostics": [
          "multiple base_structural_unit markers in use_numbered_elements ([1, 2, 3, 4]); dominant_target_unit_marker_number left empty (W19B-1 lock — no lexical disambiguation)"
        ]
      },
      "L188B03": {
        "bg_id": "L188B03",
        "fp_id": "fp_third_floor_corridor",
        "use_numbered_elements": [
          1,
          4,
          6,
          7,
          8,
          16,
          17
        ],
        "ignore_numbered_elements": [
          11,
          12,
          15
        ],
        "base_markers_to_reference": [
          {
            "number": 1,
            "label": "Third-floor corridor",
            "category": "area",
            "position_hint": "Horizontal shared circulation zone across the center, extending west to east",
            "base_layer_decision": "base_structural_unit",
            "render_role": "not_applicable",
            "top_down_legibility": "not_applicable"
          },
          {
            "number": 4,
            "label": "Stairwell and landing",
            "category": "area",
            "position_hint": "East end of the corridor, with return flights continuing to higher floors",
            "base_layer_decision": "base_structural_unit",
            "render_role": "not_applicable",
            "top_down_legibility": "not_applicable"
          },
          {
            "number": 6,
            "label": "Stairwell access",
            "category": "opening",
            "position_hint": "Gap connecting the corridor's east end directly to the stair landing",
            "base_layer_decision": "base_opening",
            "render_role": "not_applicable",
            "top_down_legibility": "not_applicable"
          },
          {
            "number": 7,
            "label": "Western corridor window",
            "category": "opening",
            "position_hint": "North exterior wall, approximately opposite the detention doorway",
            "base_layer_decision": "base_opening",
            "render_role": "not_applicable",
            "top_down_legibility": "not_applicable"
          },
          {
            "number": 8,
            "label": "Eastern corridor window",
            "category": "opening",
            "position_hint": "North exterior wall, between the western window and stairwell",
            "base_layer_decision": "base_opening",
            "render_role": "not_applicable",
            "top_down_legibility": "not_applicable"
          }
        ],
        "transient_markers_to_describe": [
          {
            "number": 16,
            "label": "Shattered glazing and flying glass",
            "category": "prop",
            "position_hint": "At window openings 7 and 8 and immediately inside the north side of the corridor; frame positions retained",
            "base_layer_decision": "state_overlay_plot_cue",
            "render_role": "not_applicable",
            "top_down_legibility": "not_applicable"
          },
          {
            "number": 17,
            "label": "Incoming tsunami water",
            "category": "prop",
            "position_hint": "Entering through north-wall windows 7 and 8 and surging across corridor 1",
            "base_layer_decision": "state_overlay_plot_cue",
            "render_role": "not_applicable",
            "top_down_legibility": "not_applicable"
          }
        ],
        "ignored_state_overlay_markers": [
          {
            "number": 11,
            "label": "Closed-door impact damage",
            "category": "prop",
            "position_hint": "Localized at the latch and handle of doorway 5 while its leaf remains closed",
            "base_layer_decision": "state_overlay_plot_cue",
            "render_role": "not_applicable",
            "top_down_legibility": "not_applicable"
          },
          {
            "number": 12,
            "label": "Displaced red extinguisher",
            "category": "prop",
            "position_hint": "At the handle-impact position beside doorway 5, removed from station 9",
            "base_layer_decision": "state_overlay_transient_object",
            "render_role": "not_applicable",
            "top_down_legibility": "not_applicable"
          },
          {
            "number": 15,
            "label": "Approaching seawater",
            "category": "prop",
            "position_hint": "Outside the north-wall windows, visible before the impact",
            "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)"
        ]
      },
      "L190B02": {
        "bg_id": "L190B02",
        "fp_id": "fp_chapel_search",
        "use_numbered_elements": [
          1,
          2,
          3
        ],
        "ignore_numbered_elements": [],
        "base_markers_to_reference": [
          {
            "number": 1,
            "label": "Chapel floor area",
            "category": "area",
            "position_hint": "Local interior crop, extending west and south of the hatch clearance; bounded locally by north and east wall segments",
            "base_layer_decision": "base_structural_unit",
            "render_role": "not_applicable",
            "top_down_legibility": "not_applicable"
          },
          {
            "number": 2,
            "label": "Hatch access clearance",
            "category": "area",
            "position_hint": "Slightly right of center, surrounding the hatch and continuous with the chapel floor",
            "base_layer_decision": "base_structural_unit",
            "render_role": "not_applicable",
            "top_down_legibility": "not_applicable"
          },
          {
            "number": 3,
            "label": "Wooden basement hatch",
            "category": "opening",
            "position_hint": "Within the access-clearance area, leaving open standing space especially to its south and west",
            "base_layer_decision": "base_opening",
            "render_role": "not_applicable",
            "top_down_legibility": "not_applicable"
          }
        ],
        "transient_markers_to_describe": [],
        "ignored_state_overlay_markers": [],
        "target_unit_marker_numbers": [
          1,
          2
        ],
        "dominant_target_unit_marker_number": null,
        "clean_background_expected": true,
        "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)"
        ]
      },
      "L194B01": {
        "bg_id": "L194B01",
        "fp_id": "fp_dump_truck_cab",
        "use_numbered_elements": [
          1,
          2,
          4,
          5,
          6,
          7,
          8,
          10
        ],
        "ignore_numbered_elements": [],
        "base_markers_to_reference": [
          {
            "number": 1,
            "label": "Cab interior",
            "category": "area",
            "position_hint": "entire enclosed cab, marker in central clear floor space",
            "base_layer_decision": "base_structural_unit",
            "render_role": "not_applicable",
            "top_down_legibility": "not_applicable"
          },
          {
            "number": 2,
            "label": "Driver seat",
            "category": "furniture",
            "position_hint": "left half of cab, behind steering wheel",
            "base_layer_decision": "base_persistent_furniture",
            "render_role": "not_applicable",
            "top_down_legibility": "not_applicable"
          },
          {
            "number": 4,
            "label": "Dashboard",
            "category": "prop",
            "position_hint": "full-width front interior band beneath windshield",
            "base_layer_decision": "base_persistent_fixture",
            "render_role": "not_applicable",
            "top_down_legibility": "not_applicable"
          },
          {
            "number": 5,
            "label": "Steering wheel",
            "category": "prop",
            "position_hint": "front-left cab, directly ahead of driver seat",
            "base_layer_decision": "base_persistent_fixture",
            "render_role": "not_applicable",
            "top_down_legibility": "not_applicable"
          },
          {
            "number": 6,
            "label": "Built-in radio",
            "category": "prop",
            "position_hint": "central dashboard, right of steering wheel",
            "base_layer_decision": "base_persistent_fixture",
            "render_role": "not_applicable",
            "top_down_legibility": "not_applicable"
          },
          {
            "number": 7,
            "label": "Windshield",
            "category": "opening",
            "position_hint": "broad front boundary above dashboard in plan",
            "base_layer_decision": "base_opening",
            "render_role": "not_applicable",
            "top_down_legibility": "not_applicable"
          },
          {
            "number": 8,
            "label": "Driver door",
            "category": "opening",
            "position_hint": "left cab boundary beside driver seat, front-hinged",
            "base_layer_decision": "base_opening",
            "render_role": "not_applicable",
            "top_down_legibility": "not_applicable"
          },
          {
            "number": 10,
            "label": "Driver side window",
            "category": "opening",
            "position_hint": "glazed portion of left door beside driver seat",
            "base_layer_decision": "base_opening",
            "render_role": "not_applicable",
            "top_down_legibility": "not_applicable"
          }
        ],
        "transient_markers_to_describe": [],
        "ignored_state_overlay_markers": [],
        "target_unit_marker_numbers": [
          1
        ],
        "dominant_target_unit_marker_number": 1,
        "clean_background_expected": true,
        "diagnostics": []
      },
      "L195B01": {
        "bg_id": "L195B01",
        "fp_id": "fp_unstaffed_shop",
        "use_numbered_elements": [
          1,
          2,
          4,
          5,
          6,
          7,
          10,
          11,
          13,
          14
        ],
        "ignore_numbered_elements": [],
        "base_markers_to_reference": [
          {
            "number": 1,
            "label": "Main sales floor",
            "category": "area",
            "position_hint": "central shared floor and connecting merchandise aisles",
            "base_layer_decision": "base_structural_unit",
            "render_role": "not_applicable",
            "top_down_legibility": "not_applicable"
          },
          {
            "number": 2,
            "label": "Entrance threshold",
            "category": "area",
            "position_hint": "southeast corner immediately inside the storefront door",
            "base_layer_decision": "base_structural_unit",
            "render_role": "not_applicable",
            "top_down_legibility": "not_applicable"
          },
          {
            "number": 4,
            "label": "ATM service bay",
            "category": "area",
            "position_hint": "middle-east side, including the standing apron west of the ATM",
            "base_layer_decision": "base_structural_unit",
            "render_role": "not_applicable",
            "top_down_legibility": "not_applicable"
          },
          {
            "number": 5,
            "label": "Shop entrance door",
            "category": "opening",
            "position_hint": "south wall near the east corner, opening inward",
            "base_layer_decision": "base_opening",
            "render_role": "not_applicable",
            "top_down_legibility": "not_applicable"
          },
          {
            "number": 6,
            "label": "Shoe and bag rack",
            "category": "furniture",
            "position_hint": "southwest perimeter, accessible from the entrance cross-aisle",
            "base_layer_decision": "base_persistent_furniture",
            "render_role": "not_applicable",
            "top_down_legibility": "not_applicable"
          },
          {
            "number": 7,
            "label": "Merchandise concealment island",
            "category": "furniture",
            "position_hint": "left-center floor, running east-west with concealed standing space along its north side",
            "base_layer_decision": "base_persistent_furniture",
            "render_role": "not_applicable",
            "top_down_legibility": "not_applicable"
          },
          {
            "number": 10,
            "label": "ATM",
            "category": "prop",
            "position_hint": "against the middle-east wall, operating front facing west",
            "base_layer_decision": "base_persistent_fixture",
            "render_role": "not_applicable",
            "top_down_legibility": "not_applicable"
          },
          {
            "number": 11,
            "label": "Blanket display rack",
            "category": "furniture",
            "position_hint": "east wall immediately north of the ATM bay",
            "base_layer_decision": "base_persistent_furniture",
            "render_role": "not_applicable",
            "top_down_legibility": "not_applicable"
          }
        ],
        "transient_markers_to_describe": [
          {
            "number": 13,
            "label": "Localized ATM front puncture",
            "category": "prop",
            "position_hint": "west-facing front panel of number 10; damage remains through the hiding and reunion",
            "base_layer_decision": "state_overlay_plot_cue",
            "render_role": "not_applicable",
            "top_down_legibility": "not_applicable"
          },
          {
            "number": 14,
            "label": "Localized removed-stock gaps",
            "category": "prop",
            "position_hint": "limited shelf gaps at numbers 6, 7, 8, 9, and 11; racks remain upright and the shop is not overturned",
            "base_layer_decision": "state_overlay_plot_cue",
            "render_role": "not_applicable",
            "top_down_legibility": "not_applicable"
          }
        ],
        "ignored_state_overlay_markers": [],
        "target_unit_marker_numbers": [
          1,
          2,
          4
        ],
        "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)"
        ]
      },
      "L196B01": {
        "bg_id": "L196B01",
        "fp_id": "fp_minister_office",
        "use_numbered_elements": [
          1,
          2,
          3,
          5,
          6,
          7,
          8,
          9,
          10,
          11
        ],
        "ignore_numbered_elements": [],
        "base_markers_to_reference": [
          {
            "number": 1,
            "label": "Shared seating area",
            "category": "area",
            "position_hint": "western three-fifths of the office",
            "base_layer_decision": "base_structural_unit",
            "render_role": "not_applicable",
            "top_down_legibility": "not_applicable"
          },
          {
            "number": 2,
            "label": "Executive desk area",
            "category": "area",
            "position_hint": "northeastern portion of the office",
            "base_layer_decision": "base_structural_unit",
            "render_role": "not_applicable",
            "top_down_legibility": "not_applicable"
          },
          {
            "number": 3,
            "label": "Entrance circulation area",
            "category": "area",
            "position_hint": "southeastern portion, connecting the entrance to both furniture groups",
            "base_layer_decision": "base_structural_unit",
            "render_role": "not_applicable",
            "top_down_legibility": "not_applicable"
          },
          {
            "number": 5,
            "label": "Main sofa",
            "category": "furniture",
            "position_hint": "against the west wall, facing east across the coffee table",
            "base_layer_decision": "base_persistent_furniture",
            "render_role": "not_applicable",
            "top_down_legibility": "not_applicable"
          },
          {
            "number": 6,
            "label": "Coffee table",
            "category": "furniture",
            "position_hint": "center of the shared seating group, between sofa and visitor armchair",
            "base_layer_decision": "base_persistent_furniture",
            "render_role": "not_applicable",
            "top_down_legibility": "not_applicable"
          },
          {
            "number": 7,
            "label": "Visitor armchair",
            "category": "furniture",
            "position_hint": "east side of the seating group, facing west toward the sofa",
            "base_layer_decision": "base_persistent_furniture",
            "render_role": "not_applicable",
            "top_down_legibility": "not_applicable"
          },
          {
            "number": 8,
            "label": "Executive desk",
            "category": "furniture",
            "position_hint": "northeastern office area, long axis east-west with working side to the north",
            "base_layer_decision": "base_persistent_furniture",
            "render_role": "not_applicable",
            "top_down_legibility": "not_applicable"
          },
          {
            "number": 9,
            "label": "Executive chair",
            "category": "furniture",
            "position_hint": "north of the executive desk, facing south",
            "base_layer_decision": "base_persistent_furniture",
            "render_role": "not_applicable",
            "top_down_legibility": "not_applicable"
          },
          {
            "number": 10,
            "label": "Seating area window",
            "category": "opening",
            "position_hint": "north wall over the western seating area",
            "base_layer_decision": "base_opening",
            "render_role": "not_applicable",
            "top_down_legibility": "not_applicable"
          },
          {
            "number": 11,
            "label": "Desk area window",
            "category": "opening",
            "position_hint": "north wall behind the executive desk grouping",
            "base_layer_decision": "base_opening",
            "render_role": "not_applicable",
            "top_down_legibility": "not_applicable"
          }
        ],
        "transient_markers_to_describe": [],
        "ignored_state_overlay_markers": [],
        "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)"
        ]
      },
      "L199B05": {
        "bg_id": "L199B05",
        "fp_id": "fp_camper_interior",
        "use_numbered_elements": [
          1,
          2,
          3,
          4,
          5,
          6,
          7,
          8,
          9,
          10,
          17
        ],
        "ignore_numbered_elements": [
          18,
          19,
          20,
          21,
          22,
          23
        ],
        "base_markers_to_reference": [
          {
            "number": 1,
            "label": "Front cab",
            "category": "area",
            "position_hint": "forward portion of vehicle, page top",
            "base_layer_decision": "base_structural_unit",
            "render_role": "not_applicable",
            "top_down_legibility": "not_applicable"
          },
          {
            "number": 2,
            "label": "Rear seating compartment",
            "category": "area",
            "position_hint": "aft portion of vehicle, behind the cab",
            "base_layer_decision": "base_structural_unit",
            "render_role": "not_applicable",
            "top_down_legibility": "not_applicable"
          },
          {
            "number": 3,
            "label": "Connecting passage",
            "category": "area",
            "position_hint": "centerline between the front seats, opening directly into the rear compartment",
            "base_layer_decision": "base_structural_unit",
            "render_role": "not_applicable",
            "top_down_legibility": "not_applicable"
          },
          {
            "number": 4,
            "label": "Driver seat",
            "category": "furniture",
            "position_hint": "front left of cab, facing the windshield",
            "base_layer_decision": "base_persistent_furniture",
            "render_role": "not_applicable",
            "top_down_legibility": "not_applicable"
          },
          {
            "number": 5,
            "label": "Passenger seat",
            "category": "furniture",
            "position_hint": "front right of cab, facing the windshield",
            "base_layer_decision": "base_persistent_furniture",
            "render_role": "not_applicable",
            "top_down_legibility": "not_applicable"
          },
          {
            "number": 6,
            "label": "Rear bench",
            "category": "furniture",
            "position_hint": "across the aft wall, facing forward, centered behind the passage",
            "base_layer_decision": "base_persistent_furniture",
            "render_role": "not_applicable",
            "top_down_legibility": "not_applicable"
          },
          {
            "number": 7,
            "label": "Dashboard",
            "category": "furniture",
            "position_hint": "across the front of the cab beneath the windshield",
            "base_layer_decision": "base_persistent_fixture",
            "render_role": "not_applicable",
            "top_down_legibility": "not_applicable"
          },
          {
            "number": 8,
            "label": "Steering wheel",
            "category": "prop",
            "position_hint": "left side of dashboard, directly ahead of driver seat",
            "base_layer_decision": "base_persistent_fixture",
            "render_role": "not_applicable",
            "top_down_legibility": "not_applicable"
          },
          {
            "number": 9,
            "label": "Rearview mirror",
            "category": "prop",
            "position_hint": "upper center of windshield interior, aligned toward rear bench through passage",
            "base_layer_decision": "base_persistent_fixture",
            "render_role": "not_applicable",
            "top_down_legibility": "not_applicable"
          },
          {
            "number": 10,
            "label": "Windshield",
            "category": "opening",
            "position_hint": "front boundary of cab, ahead of dashboard",
            "base_layer_decision": "base_opening",
            "render_role": "not_applicable",
            "top_down_legibility": "not_applicable"
          },
          {
            "number": 17,
            "label": "Small rear lamp",
            "category": "prop",
            "position_hint": "right rear wall beside the bench, mounted above seat-back level",
            "base_layer_decision": "base_persistent_fixture",
            "render_role": "not_applicable",
            "top_down_legibility": "not_applicable"
          }
        ],
        "transient_markers_to_describe": [],
        "ignored_state_overlay_markers": [
          {
            "number": 18,
            "label": "Active ceiling leakage",
            "category": "prop",
            "position_hint": "ceiling above the forward rear-compartment floor near the aft end of passage; overlay-only continuity location",
            "base_layer_decision": "state_overlay_plot_cue",
            "render_role": "not_applicable",
            "top_down_legibility": "not_applicable"
          },
          {
            "number": 19,
            "label": "Active window-frame leakage",
            "category": "prop",
            "position_hint": "inner frame of left rear side window, with water entering at its edge",
            "base_layer_decision": "state_overlay_plot_cue",
            "render_role": "not_applicable",
            "top_down_legibility": "not_applicable"
          },
          {
            "number": 20,
            "label": "Wet window-blocking cloth",
            "category": "prop",
            "position_hint": "pressed against the leaking frame of left rear side window",
            "base_layer_decision": "state_overlay_transient_object",
            "render_role": "not_applicable",
            "top_down_legibility": "not_applicable"
          },
          {
            "number": 21,
            "label": "Ceiling-blocking clothing",
            "category": "prop",
            "position_hint": "held against the ceiling at the active leak above the forward rear compartment",
            "base_layer_decision": "state_overlay_transient_object",
            "render_role": "not_applicable",
            "top_down_legibility": "not_applicable"
          },
          {
            "number": 22,
            "label": "Opened bag and extracted clothes",
            "category": "prop",
            "position_hint": "rear-compartment floor near the bench, outside the central passage",
            "base_layer_decision": "state_overlay_transient_object",
            "render_role": "not_applicable",
            "top_down_legibility": "not_applicable"
          },
          {
            "number": 23,
            "label": "Residual interior dampness",
            "category": "prop",
            "position_hint": "rear window sill, nearby floor, and affected seating surfaces; no active falling water implied",
            "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)"
        ]
      },
      "L199B03": {
        "bg_id": "L199B03",
        "fp_id": "fp_camper_interior",
        "use_numbered_elements": [
          2,
          3,
          5,
          6,
          15,
          16,
          17,
          18,
          19,
          20,
          21,
          22,
          23
        ],
        "ignore_numbered_elements": [],
        "base_markers_to_reference": [
          {
            "number": 2,
            "label": "Rear seating compartment",
            "category": "area",
            "position_hint": "aft portion of vehicle, behind the cab",
            "base_layer_decision": "base_structural_unit",
            "render_role": "not_applicable",
            "top_down_legibility": "not_applicable"
          },
          {
            "number": 3,
            "label": "Connecting passage",
            "category": "area",
            "position_hint": "centerline between the front seats, opening directly into the rear compartment",
            "base_layer_decision": "base_structural_unit",
            "render_role": "not_applicable",
            "top_down_legibility": "not_applicable"
          },
          {
            "number": 5,
            "label": "Passenger seat",
            "category": "furniture",
            "position_hint": "front right of cab, facing the windshield",
            "base_layer_decision": "base_persistent_furniture",
            "render_role": "not_applicable",
            "top_down_legibility": "not_applicable"
          },
          {
            "number": 6,
            "label": "Rear bench",
            "category": "furniture",
            "position_hint": "across the aft wall, facing forward, centered behind the passage",
            "base_layer_decision": "base_persistent_furniture",
            "render_role": "not_applicable",
            "top_down_legibility": "not_applicable"
          },
          {
            "number": 15,
            "label": "Left rear side window",
            "category": "opening",
            "position_hint": "left rear-compartment wall, alongside the clear floor immediately ahead of the bench",
            "base_layer_decision": "base_opening",
            "render_role": "not_applicable",
            "top_down_legibility": "not_applicable"
          },
          {
            "number": 16,
            "label": "Right rear side window",
            "category": "opening",
            "position_hint": "right rear-compartment wall, opposite the left rear side window",
            "base_layer_decision": "base_opening",
            "render_role": "not_applicable",
            "top_down_legibility": "not_applicable"
          },
          {
            "number": 17,
            "label": "Small rear lamp",
            "category": "prop",
            "position_hint": "right rear wall beside the bench, mounted above seat-back level",
            "base_layer_decision": "base_persistent_fixture",
            "render_role": "not_applicable",
            "top_down_legibility": "not_applicable"
          }
        ],
        "transient_markers_to_describe": [
          {
            "number": 18,
            "label": "Active ceiling leakage",
            "category": "prop",
            "position_hint": "ceiling above the forward rear-compartment floor near the aft end of passage; overlay-only continuity location",
            "base_layer_decision": "state_overlay_plot_cue",
            "render_role": "not_applicable",
            "top_down_legibility": "not_applicable"
          },
          {
            "number": 19,
            "label": "Active window-frame leakage",
            "category": "prop",
            "position_hint": "inner frame of left rear side window, with water entering at its edge",
            "base_layer_decision": "state_overlay_plot_cue",
            "render_role": "not_applicable",
            "top_down_legibility": "not_applicable"
          },
          {
            "number": 20,
            "label": "Wet window-blocking cloth",
            "category": "prop",
            "position_hint": "pressed against the leaking frame of left rear side window",
            "base_layer_decision": "state_overlay_transient_object",
            "render_role": "not_applicable",
            "top_down_legibility": "not_applicable"
          },
          {
            "number": 21,
            "label": "Ceiling-blocking clothing",
            "category": "prop",
            "position_hint": "held against the ceiling at the active leak above the forward rear compartment",
            "base_layer_decision": "state_overlay_transient_object",
            "render_role": "not_applicable",
            "top_down_legibility": "not_applicable"
          },
          {
            "number": 22,
            "label": "Opened bag and extracted clothes",
            "category": "prop",
            "position_hint": "rear-compartment floor near the bench, outside the central passage",
            "base_layer_decision": "state_overlay_transient_object",
            "render_role": "not_applicable",
            "top_down_legibility": "not_applicable"
          },
          {
            "number": 23,
            "label": "Residual interior dampness",
            "category": "prop",
            "position_hint": "rear window sill, nearby floor, and affected seating surfaces; no active falling water implied",
            "base_layer_decision": "state_overlay_plot_cue",
            "render_role": "not_applicable",
            "top_down_legibility": "not_applicable"
          }
        ],
        "ignored_state_overlay_markers": [],
        "target_unit_marker_numbers": [
          2,
          3
        ],
        "dominant_target_unit_marker_number": null,
        "clean_background_expected": false,
        "diagnostics": [
          "multiple base_structural_unit markers in use_numbered_elements ([2, 3]); dominant_target_unit_marker_number left empty (W19B-1 lock — no lexical disambiguation)"
        ]
      },
      "L199B02": {
        "bg_id": "L199B02",
        "fp_id": "fp_camper_interior",
        "use_numbered_elements": [
          1,
          2,
          3,
          4,
          5,
          6,
          7,
          8,
          9,
          10,
          12,
          14,
          16,
          23
        ],
        "ignore_numbered_elements": [
          18,
          19,
          20,
          21,
          22
        ],
        "base_markers_to_reference": [
          {
            "number": 1,
            "label": "Front cab",
            "category": "area",
            "position_hint": "forward portion of vehicle, page top",
            "base_layer_decision": "base_structural_unit",
            "render_role": "not_applicable",
            "top_down_legibility": "not_applicable"
          },
          {
            "number": 2,
            "label": "Rear seating compartment",
            "category": "area",
            "position_hint": "aft portion of vehicle, behind the cab",
            "base_layer_decision": "base_structural_unit",
            "render_role": "not_applicable",
            "top_down_legibility": "not_applicable"
          },
          {
            "number": 3,
            "label": "Connecting passage",
            "category": "area",
            "position_hint": "centerline between the front seats, opening directly into the rear compartment",
            "base_layer_decision": "base_structural_unit",
            "render_role": "not_applicable",
            "top_down_legibility": "not_applicable"
          },
          {
            "number": 4,
            "label": "Driver seat",
            "category": "furniture",
            "position_hint": "front left of cab, facing the windshield",
            "base_layer_decision": "base_persistent_furniture",
            "render_role": "not_applicable",
            "top_down_legibility": "not_applicable"
          },
          {
            "number": 5,
            "label": "Passenger seat",
            "category": "furniture",
            "position_hint": "front right of cab, facing the windshield",
            "base_layer_decision": "base_persistent_furniture",
            "render_role": "not_applicable",
            "top_down_legibility": "not_applicable"
          },
          {
            "number": 6,
            "label": "Rear bench",
            "category": "furniture",
            "position_hint": "across the aft wall, facing forward, centered behind the passage",
            "base_layer_decision": "base_persistent_furniture",
            "render_role": "not_applicable",
            "top_down_legibility": "not_applicable"
          },
          {
            "number": 7,
            "label": "Dashboard",
            "category": "furniture",
            "position_hint": "across the front of the cab beneath the windshield",
            "base_layer_decision": "base_persistent_fixture",
            "render_role": "not_applicable",
            "top_down_legibility": "not_applicable"
          },
          {
            "number": 8,
            "label": "Steering wheel",
            "category": "prop",
            "position_hint": "left side of dashboard, directly ahead of driver seat",
            "base_layer_decision": "base_persistent_fixture",
            "render_role": "not_applicable",
            "top_down_legibility": "not_applicable"
          },
          {
            "number": 9,
            "label": "Rearview mirror",
            "category": "prop",
            "position_hint": "upper center of windshield interior, aligned toward rear bench through passage",
            "base_layer_decision": "base_persistent_fixture",
            "render_role": "not_applicable",
            "top_down_legibility": "not_applicable"
          },
          {
            "number": 10,
            "label": "Windshield",
            "category": "opening",
            "position_hint": "front boundary of cab, ahead of dashboard",
            "base_layer_decision": "base_opening",
            "render_role": "not_applicable",
            "top_down_legibility": "not_applicable"
          },
          {
            "number": 12,
            "label": "Passenger door",
            "category": "opening",
            "position_hint": "right cab boundary beside passenger seat, front-hinged",
            "base_layer_decision": "base_opening",
            "render_role": "not_applicable",
            "top_down_legibility": "not_applicable"
          },
          {
            "number": 14,
            "label": "Passenger-side cab window",
            "category": "opening",
            "position_hint": "glazed portion of passenger door on right cab boundary",
            "base_layer_decision": "base_opening",
            "render_role": "not_applicable",
            "top_down_legibility": "not_applicable"
          },
          {
            "number": 16,
            "label": "Right rear side window",
            "category": "opening",
            "position_hint": "right rear-compartment wall, opposite the left rear side window",
            "base_layer_decision": "base_opening",
            "render_role": "not_applicable",
            "top_down_legibility": "not_applicable"
          }
        ],
        "transient_markers_to_describe": [
          {
            "number": 23,
            "label": "Residual interior dampness",
            "category": "prop",
            "position_hint": "rear window sill, nearby floor, and affected seating surfaces; no active falling water implied",
            "base_layer_decision": "state_overlay_plot_cue",
            "render_role": "not_applicable",
            "top_down_legibility": "not_applicable"
          }
        ],
        "ignored_state_overlay_markers": [
          {
            "number": 18,
            "label": "Active ceiling leakage",
            "category": "prop",
            "position_hint": "ceiling above the forward rear-compartment floor near the aft end of passage; overlay-only continuity location",
            "base_layer_decision": "state_overlay_plot_cue",
            "render_role": "not_applicable",
            "top_down_legibility": "not_applicable"
          },
          {
            "number": 19,
            "label": "Active window-frame leakage",
            "category": "prop",
            "position_hint": "inner frame of left rear side window, with water entering at its edge",
            "base_layer_decision": "state_overlay_plot_cue",
            "render_role": "not_applicable",
            "top_down_legibility": "not_applicable"
          },
          {
            "number": 20,
            "label": "Wet window-blocking cloth",
            "category": "prop",
            "position_hint": "pressed against the leaking frame of left rear side window",
            "base_layer_decision": "state_overlay_transient_object",
            "render_role": "not_applicable",
            "top_down_legibility": "not_applicable"
          },
          {
            "number": 21,
            "label": "Ceiling-blocking clothing",
            "category": "prop",
            "position_hint": "held against the ceiling at the active leak above the forward rear compartment",
            "base_layer_decision": "state_overlay_transient_object",
            "render_role": "not_applicable",
            "top_down_legibility": "not_applicable"
          },
          {
            "number": 22,
            "label": "Opened bag and extracted clothes",
            "category": "prop",
            "position_hint": "rear-compartment floor near the bench, outside the central passage",
            "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)"
        ]
      },
      "L202B04": {
        "bg_id": "L202B04",
        "fp_id": "fp_abandoned_library_main",
        "use_numbered_elements": [
          1,
          2,
          3,
          5,
          6,
          8,
          9,
          14
        ],
        "ignore_numbered_elements": [
          15,
          16,
          17
        ],
        "base_markers_to_reference": [
          {
            "number": 1,
            "label": "Reading room",
            "category": "area",
            "position_hint": "general shared floor area surrounding the central shelf runs",
            "base_layer_decision": "base_structural_unit",
            "render_role": "not_applicable",
            "top_down_legibility": "not_applicable"
          },
          {
            "number": 2,
            "label": "Entrance threshold",
            "category": "area",
            "position_hint": "southwest corner, immediately inside the entrance",
            "base_layer_decision": "base_structural_unit",
            "render_role": "not_applicable",
            "top_down_legibility": "not_applicable"
          },
          {
            "number": 3,
            "label": "Meal and sleeping corner",
            "category": "area",
            "position_hint": "open southern floor area, east of the entrance threshold",
            "base_layer_decision": "base_structural_unit",
            "render_role": "not_applicable",
            "top_down_legibility": "not_applicable"
          },
          {
            "number": 5,
            "label": "Wall-side aisle",
            "category": "area",
            "position_hint": "continuous strip along the east wall, connected to the southern corner",
            "base_layer_decision": "base_structural_unit",
            "render_role": "not_applicable",
            "top_down_legibility": "not_applicable"
          },
          {
            "number": 6,
            "label": "Uninterrupted mural support wall",
            "category": "area",
            "position_hint": "east perimeter wall, with marker beside its midpoint",
            "base_layer_decision": "base_structural_unit",
            "render_role": "not_applicable",
            "top_down_legibility": "not_applicable"
          },
          {
            "number": 8,
            "label": "Western freestanding shelf",
            "category": "furniture",
            "position_hint": "west-central room, oriented north-south",
            "base_layer_decision": "base_persistent_furniture",
            "render_role": "not_applicable",
            "top_down_legibility": "not_applicable"
          },
          {
            "number": 9,
            "label": "Eastern freestanding shelf",
            "category": "furniture",
            "position_hint": "east-central room, parallel to the western shelf and clear of the wall-side aisle",
            "base_layer_decision": "base_persistent_furniture",
            "render_role": "not_applicable",
            "top_down_legibility": "not_applicable"
          }
        ],
        "transient_markers_to_describe": [
          {
            "number": 14,
            "label": "Meal supplies",
            "category": "prop",
            "position_hint": "within number 3, loose canned food and the supply bag",
            "base_layer_decision": "state_overlay_transient_object",
            "render_role": "not_applicable",
            "top_down_legibility": "not_applicable"
          }
        ],
        "ignored_state_overlay_markers": [
          {
            "number": 15,
            "label": "Improvised box and book bedding",
            "category": "prop",
            "position_hint": "within number 3 along the south wall",
            "base_layer_decision": "state_overlay_transient_object",
            "render_role": "not_applicable",
            "top_down_legibility": "not_applicable"
          },
          {
            "number": 16,
            "label": "Active computer screen",
            "category": "prop",
            "position_hint": "confined to the monitor of number 11, providing localized nighttime face illumination",
            "base_layer_decision": "state_overlay_plot_cue",
            "render_role": "not_applicable",
            "top_down_legibility": "not_applicable"
          },
          {
            "number": 17,
            "label": "Morning crayon mural",
            "category": "prop",
            "position_hint": "on the physical east wall at number 6, extending northward beside number 5; blue sea, marine life, palms, a camping truck, traveling companions, a mother, and a priest remain depicted within the artwork",
            "base_layer_decision": "state_overlay_plot_cue",
            "render_role": "not_applicable",
            "top_down_legibility": "not_applicable"
          }
        ],
        "target_unit_marker_numbers": [
          1,
          2,
          3,
          5,
          6
        ],
        "dominant_target_unit_marker_number": null,
        "clean_background_expected": false,
        "diagnostics": [
          "multiple base_structural_unit markers in use_numbered_elements ([1, 2, 3, 5, 6]); dominant_target_unit_marker_number left empty (W19B-1 lock — no lexical disambiguation)"
        ]
      },
      "L202B05": {
        "bg_id": "L202B05",
        "fp_id": "fp_abandoned_library_main",
        "use_numbered_elements": [
          1,
          4,
          7,
          10,
          11,
          16
        ],
        "ignore_numbered_elements": [
          14,
          17
        ],
        "base_markers_to_reference": [
          {
            "number": 1,
            "label": "Reading room",
            "category": "area",
            "position_hint": "general shared floor area surrounding the central shelf runs",
            "base_layer_decision": "base_structural_unit",
            "render_role": "not_applicable",
            "top_down_legibility": "not_applicable"
          },
          {
            "number": 4,
            "label": "Computer station area",
            "category": "area",
            "position_hint": "northwest corner, beyond the northern ends of the central shelves",
            "base_layer_decision": "base_structural_unit",
            "render_role": "not_applicable",
            "top_down_legibility": "not_applicable"
          },
          {
            "number": 7,
            "label": "West wall bookshelf",
            "category": "furniture",
            "position_hint": "upper west wall, below the computer-station corner",
            "base_layer_decision": "base_persistent_furniture",
            "render_role": "not_applicable",
            "top_down_legibility": "not_applicable"
          },
          {
            "number": 10,
            "label": "Computer desk",
            "category": "furniture",
            "position_hint": "against the north wall within the northwest station",
            "base_layer_decision": "base_persistent_furniture",
            "render_role": "not_applicable",
            "top_down_legibility": "not_applicable"
          },
          {
            "number": 11,
            "label": "Old desktop computer",
            "category": "prop",
            "position_hint": "on the computer desk at number 10",
            "base_layer_decision": "base_persistent_fixture",
            "render_role": "not_applicable",
            "top_down_legibility": "not_applicable"
          }
        ],
        "transient_markers_to_describe": [
          {
            "number": 16,
            "label": "Active computer screen",
            "category": "prop",
            "position_hint": "confined to the monitor of number 11, providing localized nighttime face illumination",
            "base_layer_decision": "state_overlay_plot_cue",
            "render_role": "not_applicable",
            "top_down_legibility": "not_applicable"
          }
        ],
        "ignored_state_overlay_markers": [
          {
            "number": 14,
            "label": "Meal supplies",
            "category": "prop",
            "position_hint": "within number 3, loose canned food and the supply bag",
            "base_layer_decision": "state_overlay_transient_object",
            "render_role": "not_applicable",
            "top_down_legibility": "not_applicable"
          },
          {
            "number": 17,
            "label": "Morning crayon mural",
            "category": "prop",
            "position_hint": "on the physical east wall at number 6, extending northward beside number 5; blue sea, marine life, palms, a camping truck, traveling companions, a mother, and a priest remain depicted within the artwork",
            "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)"
        ]
      },
      "L202B01": {
        "bg_id": "L202B01",
        "fp_id": "fp_abandoned_library_main",
        "use_numbered_elements": [
          1,
          3,
          5,
          6,
          9,
          15,
          17
        ],
        "ignore_numbered_elements": [
          14,
          16
        ],
        "base_markers_to_reference": [
          {
            "number": 1,
            "label": "Reading room",
            "category": "area",
            "position_hint": "general shared floor area surrounding the central shelf runs",
            "base_layer_decision": "base_structural_unit",
            "render_role": "not_applicable",
            "top_down_legibility": "not_applicable"
          },
          {
            "number": 3,
            "label": "Meal and sleeping corner",
            "category": "area",
            "position_hint": "open southern floor area, east of the entrance threshold",
            "base_layer_decision": "base_structural_unit",
            "render_role": "not_applicable",
            "top_down_legibility": "not_applicable"
          },
          {
            "number": 5,
            "label": "Wall-side aisle",
            "category": "area",
            "position_hint": "continuous strip along the east wall, connected to the southern corner",
            "base_layer_decision": "base_structural_unit",
            "render_role": "not_applicable",
            "top_down_legibility": "not_applicable"
          },
          {
            "number": 6,
            "label": "Uninterrupted mural support wall",
            "category": "area",
            "position_hint": "east perimeter wall, with marker beside its midpoint",
            "base_layer_decision": "base_structural_unit",
            "render_role": "not_applicable",
            "top_down_legibility": "not_applicable"
          },
          {
            "number": 9,
            "label": "Eastern freestanding shelf",
            "category": "furniture",
            "position_hint": "east-central room, parallel to the western shelf and clear of the wall-side aisle",
            "base_layer_decision": "base_persistent_furniture",
            "render_role": "not_applicable",
            "top_down_legibility": "not_applicable"
          }
        ],
        "transient_markers_to_describe": [
          {
            "number": 15,
            "label": "Improvised box and book bedding",
            "category": "prop",
            "position_hint": "within number 3 along the south wall",
            "base_layer_decision": "state_overlay_transient_object",
            "render_role": "not_applicable",
            "top_down_legibility": "not_applicable"
          },
          {
            "number": 17,
            "label": "Morning crayon mural",
            "category": "prop",
            "position_hint": "on the physical east wall at number 6, extending northward beside number 5; blue sea, marine life, palms, a camping truck, traveling companions, a mother, and a priest remain depicted within the artwork",
            "base_layer_decision": "state_overlay_plot_cue",
            "render_role": "not_applicable",
            "top_down_legibility": "not_applicable"
          }
        ],
        "ignored_state_overlay_markers": [
          {
            "number": 14,
            "label": "Meal supplies",
            "category": "prop",
            "position_hint": "within number 3, loose canned food and the supply bag",
            "base_layer_decision": "state_overlay_transient_object",
            "render_role": "not_applicable",
            "top_down_legibility": "not_applicable"
          },
          {
            "number": 16,
            "label": "Active computer screen",
            "category": "prop",
            "position_hint": "confined to the monitor of number 11, providing localized nighttime face illumination",
            "base_layer_decision": "state_overlay_plot_cue",
            "render_role": "not_applicable",
            "top_down_legibility": "not_applicable"
          }
        ],
        "target_unit_marker_numbers": [
          1,
          3,
          5,
          6
        ],
        "dominant_target_unit_marker_number": null,
        "clean_background_expected": false,
        "diagnostics": [
          "multiple base_structural_unit markers in use_numbered_elements ([1, 3, 5, 6]); dominant_target_unit_marker_number left empty (W19B-1 lock — no lexical disambiguation)"
        ]
      },
      "L205B01": {
        "bg_id": "L205B01",
        "fp_id": "fp_l205_service_station",
        "use_numbered_elements": [
          1,
          2,
          3,
          4,
          5,
          6,
          7,
          8
        ],
        "ignore_numbered_elements": [],
        "base_markers_to_reference": [
          {
            "number": 1,
            "label": "Shop retail area",
            "category": "area",
            "position_hint": "upper-left building, surrounding the central shelving",
            "base_layer_decision": "base_structural_unit",
            "render_role": "not_applicable",
            "top_down_legibility": "not_applicable"
          },
          {
            "number": 2,
            "label": "Medicine corner",
            "category": "area",
            "position_hint": "northwest corner inside the shop",
            "base_layer_decision": "base_structural_unit",
            "render_role": "not_applicable",
            "top_down_legibility": "not_applicable"
          },
          {
            "number": 3,
            "label": "Attendant area",
            "category": "area",
            "position_hint": "southeast shop interior, beside the entrance route",
            "base_layer_decision": "base_structural_unit",
            "render_role": "not_applicable",
            "top_down_legibility": "not_applicable"
          },
          {
            "number": 4,
            "label": "Medicine shelving",
            "category": "furniture",
            "position_hint": "north wall within number 2",
            "base_layer_decision": "base_persistent_furniture",
            "render_role": "not_applicable",
            "top_down_legibility": "not_applicable"
          },
          {
            "number": 5,
            "label": "Merchandise shelf",
            "category": "furniture",
            "position_hint": "shop center, with circulation around both ends",
            "base_layer_decision": "base_persistent_furniture",
            "render_role": "not_applicable",
            "top_down_legibility": "not_applicable"
          },
          {
            "number": 6,
            "label": "Attendant table",
            "category": "furniture",
            "position_hint": "inside number 3, east of the central merchandise shelf",
            "base_layer_decision": "base_persistent_furniture",
            "render_role": "not_applicable",
            "top_down_legibility": "not_applicable"
          },
          {
            "number": 7,
            "label": "Television",
            "category": "prop",
            "position_hint": "east wall near number 6",
            "base_layer_decision": "base_persistent_fixture",
            "render_role": "not_applicable",
            "top_down_legibility": "not_applicable"
          },
          {
            "number": 8,
            "label": "Security mirror",
            "category": "prop",
            "position_hint": "northeast interior corner, directed toward the entrance-side aisle",
            "base_layer_decision": "base_persistent_fixture",
            "render_role": "not_applicable",
            "top_down_legibility": "not_applicable"
          }
        ],
        "transient_markers_to_describe": [],
        "ignored_state_overlay_markers": [],
        "target_unit_marker_numbers": [
          1,
          2,
          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)"
        ]
      },
      "L205B02": {
        "bg_id": "L205B02",
        "fp_id": "fp_l205_service_station",
        "use_numbered_elements": [
          1,
          9,
          10,
          11,
          12,
          13,
          14,
          15,
          16,
          17
        ],
        "ignore_numbered_elements": [],
        "base_markers_to_reference": [
          {
            "number": 1,
            "label": "Shop retail area",
            "category": "area",
            "position_hint": "upper-left building, surrounding the central shelving",
            "base_layer_decision": "base_structural_unit",
            "render_role": "not_applicable",
            "top_down_legibility": "not_applicable"
          },
          {
            "number": 9,
            "label": "Shop entrance",
            "category": "opening",
            "position_hint": "south shop wall near the southeast corner",
            "base_layer_decision": "base_opening",
            "render_role": "not_applicable",
            "top_down_legibility": "not_applicable"
          },
          {
            "number": 10,
            "label": "Storefront window",
            "category": "opening",
            "position_hint": "south shop wall west of number 9, facing the forecourt",
            "base_layer_decision": "base_opening",
            "render_role": "not_applicable",
            "top_down_legibility": "not_applicable"
          },
          {
            "number": 11,
            "label": "Entrance apron",
            "category": "area",
            "position_hint": "immediately outside number 9, between shop and forecourt",
            "base_layer_decision": "base_structural_unit",
            "render_role": "not_applicable",
            "top_down_legibility": "not_applicable"
          },
          {
            "number": 12,
            "label": "Fuel forecourt",
            "category": "area",
            "position_hint": "south of the shop and north of the road",
            "base_layer_decision": "base_structural_unit",
            "render_role": "not_applicable",
            "top_down_legibility": "not_applicable"
          },
          {
            "number": 13,
            "label": "Fuel dispenser island",
            "category": "prop",
            "position_hint": "central forecourt, clear of the shop entrance route",
            "base_layer_decision": "base_persistent_fixture",
            "render_role": "not_applicable",
            "top_down_legibility": "not_applicable"
          },
          {
            "number": 14,
            "label": "Driveway connection",
            "category": "opening",
            "position_hint": "southeast edge of the forecourt, opening onto number 15",
            "base_layer_decision": "base_opening",
            "render_role": "not_applicable",
            "top_down_legibility": "not_applicable"
          },
          {
            "number": 15,
            "label": "Adjoining road",
            "category": "area",
            "position_hint": "east-west strip across the lower part of the plan",
            "base_layer_decision": "base_structural_unit",
            "render_role": "not_applicable",
            "top_down_legibility": "not_applicable"
          },
          {
            "number": 16,
            "label": "Roadside shoulder",
            "category": "area",
            "position_hint": "north edge of the road, continuing east beyond the station driveway",
            "base_layer_decision": "base_structural_unit",
            "render_role": "not_applicable",
            "top_down_legibility": "not_applicable"
          },
          {
            "number": 17,
            "label": "Trash mound",
            "category": "area",
            "position_hint": "right-hand roadside shoulder beyond the forecourt",
            "base_layer_decision": "base_structural_unit",
            "render_role": "not_applicable",
            "top_down_legibility": "not_applicable"
          }
        ],
        "transient_markers_to_describe": [],
        "ignored_state_overlay_markers": [],
        "target_unit_marker_numbers": [
          1,
          11,
          12,
          15,
          16,
          17
        ],
        "dominant_target_unit_marker_number": null,
        "clean_background_expected": true,
        "diagnostics": [
          "multiple base_structural_unit markers in use_numbered_elements ([1, 11, 12, 15, 16, 17]); dominant_target_unit_marker_number left empty (W19B-1 lock — no lexical disambiguation)"
        ]
      },
      "L209B01": {
        "bg_id": "L209B01",
        "fp_id": "fp_repair_warehouse",
        "use_numbered_elements": [
          1,
          2,
          3,
          5,
          6,
          7,
          8,
          9,
          10,
          11,
          13,
          14
        ],
        "ignore_numbered_elements": [],
        "base_markers_to_reference": [
          {
            "number": 1,
            "label": "Recovery area",
            "category": "area",
            "position_hint": "southwest corner, open to the central circulation and repair area",
            "base_layer_decision": "base_structural_unit",
            "render_role": "not_applicable",
            "top_down_legibility": "not_applicable"
          },
          {
            "number": 2,
            "label": "Repair area",
            "category": "area",
            "position_hint": "eastern and northeastern interior, aligned with the south vehicle opening",
            "base_layer_decision": "base_structural_unit",
            "render_role": "not_applicable",
            "top_down_legibility": "not_applicable"
          },
          {
            "number": 3,
            "label": "Circulation area",
            "category": "area",
            "position_hint": "west and center, connecting the pedestrian door, recovery corner, and repair area",
            "base_layer_decision": "base_structural_unit",
            "render_role": "not_applicable",
            "top_down_legibility": "not_applicable"
          },
          {
            "number": 5,
            "label": "Recovery cot",
            "category": "furniture",
            "position_hint": "west side of the recovery area, oriented north-south with its head to the north",
            "base_layer_decision": "base_persistent_furniture",
            "render_role": "not_applicable",
            "top_down_legibility": "not_applicable"
          },
          {
            "number": 6,
            "label": "Workbench",
            "category": "furniture",
            "position_hint": "against the north wall near the center, outside the camper working clearance",
            "base_layer_decision": "base_persistent_furniture",
            "render_role": "not_applicable",
            "top_down_legibility": "not_applicable"
          },
          {
            "number": 7,
            "label": "Mounted tool rack",
            "category": "prop",
            "position_hint": "north wall immediately east of the workbench",
            "base_layer_decision": "base_persistent_fixture",
            "render_role": "not_applicable",
            "top_down_legibility": "not_applicable"
          },
          {
            "number": 8,
            "label": "Large speaker",
            "category": "furniture",
            "position_hint": "northeast corner, clear of the camper and its working aisle",
            "base_layer_decision": "base_persistent_furniture",
            "render_role": "not_applicable",
            "top_down_legibility": "not_applicable"
          },
          {
            "number": 9,
            "label": "West poster array",
            "category": "prop",
            "position_hint": "northwest portion of the west wall, north of the pedestrian door",
            "base_layer_decision": "base_persistent_fixture",
            "render_role": "not_applicable",
            "top_down_legibility": "not_applicable"
          },
          {
            "number": 10,
            "label": "North poster array",
            "category": "prop",
            "position_hint": "western portion of the north wall, west of the workbench",
            "base_layer_decision": "base_persistent_fixture",
            "render_role": "not_applicable",
            "top_down_legibility": "not_applicable"
          },
          {
            "number": 11,
            "label": "Pedestrian door",
            "category": "opening",
            "position_hint": "west wall between the recovery corner and the west poster array",
            "base_layer_decision": "base_opening",
            "render_role": "not_applicable",
            "top_down_legibility": "not_applicable"
          }
        ],
        "transient_markers_to_describe": [
          {
            "number": 13,
            "label": "Camper under repair",
            "category": "prop",
            "position_hint": "center of the eastern repair area, oriented north-south with its front north; keep the west-side working aisle visible from the recovery cot",
            "base_layer_decision": "state_overlay_transient_object",
            "render_role": "not_applicable",
            "top_down_legibility": "not_applicable"
          },
          {
            "number": 14,
            "label": "Large floor pliers",
            "category": "prop",
            "position_hint": "on the floor immediately east of the cot's north half, within reach from the recovery position and outside the main walkway",
            "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)"
        ]
      },
      "L211B01": {
        "bg_id": "L211B01",
        "fp_id": "fp_container_diner",
        "use_numbered_elements": [
          1,
          2,
          3,
          4,
          6,
          7,
          8,
          9,
          10
        ],
        "ignore_numbered_elements": [
          11
        ],
        "base_markers_to_reference": [
          {
            "number": 1,
            "label": "Container enclosure",
            "category": "area",
            "position_hint": "complete rectangular interior; marker near northwest inside corner",
            "base_layer_decision": "base_structural_unit",
            "render_role": "not_applicable",
            "top_down_legibility": "not_applicable"
          },
          {
            "number": 2,
            "label": "Shared dining area",
            "category": "area",
            "position_hint": "central and eastern interior, north of the circulation aisle",
            "base_layer_decision": "base_structural_unit",
            "render_role": "not_applicable",
            "top_down_legibility": "not_applicable"
          },
          {
            "number": 3,
            "label": "Entrance threshold",
            "category": "area",
            "position_hint": "western interior immediately inside the entrance",
            "base_layer_decision": "base_structural_unit",
            "render_role": "not_applicable",
            "top_down_legibility": "not_applicable"
          },
          {
            "number": 4,
            "label": "Circulation aisle",
            "category": "area",
            "position_hint": "continuous strip along the southern wall, connecting entrance and dining area",
            "base_layer_decision": "base_structural_unit",
            "render_role": "not_applicable",
            "top_down_legibility": "not_applicable"
          },
          {
            "number": 6,
            "label": "Dining window",
            "category": "opening",
            "position_hint": "northern wall aligned with the communal table",
            "base_layer_decision": "base_opening",
            "render_role": "not_applicable",
            "top_down_legibility": "not_applicable"
          },
          {
            "number": 7,
            "label": "Communal dining table",
            "category": "furniture",
            "position_hint": "central-eastern dining area, long axis running east-west",
            "base_layer_decision": "base_persistent_furniture",
            "render_role": "not_applicable",
            "top_down_legibility": "not_applicable"
          },
          {
            "number": 8,
            "label": "North dining bench",
            "category": "furniture",
            "position_hint": "between the table and northern wall",
            "base_layer_decision": "base_persistent_furniture",
            "render_role": "not_applicable",
            "top_down_legibility": "not_applicable"
          },
          {
            "number": 9,
            "label": "South dining bench",
            "category": "furniture",
            "position_hint": "south side of the table, leaving the southern circulation aisle unobstructed",
            "base_layer_decision": "base_persistent_furniture",
            "render_role": "not_applicable",
            "top_down_legibility": "not_applicable"
          }
        ],
        "transient_markers_to_describe": [
          {
            "number": 10,
            "label": "In-use soup meal settings",
            "category": "prop",
            "position_hint": "on the communal table at active dining places in the daytime background only",
            "base_layer_decision": "state_overlay_transient_object",
            "render_role": "not_applicable",
            "top_down_legibility": "not_applicable"
          }
        ],
        "ignored_state_overlay_markers": [
          {
            "number": 11,
            "label": "Worn handheld letter",
            "category": "prop",
            "position_hint": "held in the next-morning foreground beside the dining area; not mounted or displayed on furniture",
            "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": false,
        "diagnostics": [
          "multiple base_structural_unit markers in use_numbered_elements ([1, 2, 3, 4]); dominant_target_unit_marker_number left empty (W19B-1 lock — no lexical disambiguation)"
        ]
      },
      "L211B03": {
        "bg_id": "L211B03",
        "fp_id": "fp_container_diner",
        "use_numbered_elements": [
          1,
          2,
          6,
          7,
          8,
          9,
          11
        ],
        "ignore_numbered_elements": [
          10
        ],
        "base_markers_to_reference": [
          {
            "number": 1,
            "label": "Container enclosure",
            "category": "area",
            "position_hint": "complete rectangular interior; marker near northwest inside corner",
            "base_layer_decision": "base_structural_unit",
            "render_role": "not_applicable",
            "top_down_legibility": "not_applicable"
          },
          {
            "number": 2,
            "label": "Shared dining area",
            "category": "area",
            "position_hint": "central and eastern interior, north of the circulation aisle",
            "base_layer_decision": "base_structural_unit",
            "render_role": "not_applicable",
            "top_down_legibility": "not_applicable"
          },
          {
            "number": 6,
            "label": "Dining window",
            "category": "opening",
            "position_hint": "northern wall aligned with the communal table",
            "base_layer_decision": "base_opening",
            "render_role": "not_applicable",
            "top_down_legibility": "not_applicable"
          },
          {
            "number": 7,
            "label": "Communal dining table",
            "category": "furniture",
            "position_hint": "central-eastern dining area, long axis running east-west",
            "base_layer_decision": "base_persistent_furniture",
            "render_role": "not_applicable",
            "top_down_legibility": "not_applicable"
          },
          {
            "number": 8,
            "label": "North dining bench",
            "category": "furniture",
            "position_hint": "between the table and northern wall",
            "base_layer_decision": "base_persistent_furniture",
            "render_role": "not_applicable",
            "top_down_legibility": "not_applicable"
          },
          {
            "number": 9,
            "label": "South dining bench",
            "category": "furniture",
            "position_hint": "south side of the table, leaving the southern circulation aisle unobstructed",
            "base_layer_decision": "base_persistent_furniture",
            "render_role": "not_applicable",
            "top_down_legibility": "not_applicable"
          }
        ],
        "transient_markers_to_describe": [
          {
            "number": 11,
            "label": "Worn handheld letter",
            "category": "prop",
            "position_hint": "held in the next-morning foreground beside the dining area; not mounted or displayed on furniture",
            "base_layer_decision": "state_overlay_transient_object",
            "render_role": "not_applicable",
            "top_down_legibility": "not_applicable"
          }
        ],
        "ignored_state_overlay_markers": [
          {
            "number": 10,
            "label": "In-use soup meal settings",
            "category": "prop",
            "position_hint": "on the communal table at active dining places in the daytime background only",
            "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)"
        ]
      },
      "L220B01": {
        "bg_id": "L220B01",
        "fp_id": "fp_church_sanctuary",
        "use_numbered_elements": [
          1,
          3,
          4,
          5,
          6,
          8,
          9,
          10,
          11,
          12,
          13,
          14
        ],
        "ignore_numbered_elements": [],
        "base_markers_to_reference": [
          {
            "number": 1,
            "label": "Open nave",
            "category": "area",
            "position_hint": "Central sanctuary floor between the south entrance and north dais",
            "base_layer_decision": "base_structural_unit",
            "render_role": "not_applicable",
            "top_down_legibility": "not_applicable"
          },
          {
            "number": 3,
            "label": "Dais",
            "category": "area",
            "position_hint": "North end of the nave",
            "base_layer_decision": "base_structural_unit",
            "render_role": "not_applicable",
            "top_down_legibility": "not_applicable"
          },
          {
            "number": 4,
            "label": "Dais steps",
            "category": "area",
            "position_hint": "Centered along the south edge of the dais",
            "base_layer_decision": "base_structural_unit",
            "render_role": "not_applicable",
            "top_down_legibility": "not_applicable"
          },
          {
            "number": 5,
            "label": "Ceremonial chair",
            "category": "furniture",
            "position_hint": "North-center of the dais, facing south into the nave",
            "base_layer_decision": "base_persistent_furniture",
            "render_role": "not_applicable",
            "top_down_legibility": "not_applicable"
          },
          {
            "number": 6,
            "label": "Upper balcony",
            "category": "area",
            "position_hint": "Continuous U-shaped gallery along the west, south, and east sanctuary perimeter",
            "base_layer_decision": "base_structural_unit",
            "render_role": "not_applicable",
            "top_down_legibility": "not_applicable"
          },
          {
            "number": 8,
            "label": "Barred sliding opening",
            "category": "opening",
            "position_hint": "West wall of the northeast holding bay, facing the dais-front clearance",
            "base_layer_decision": "base_opening",
            "render_role": "not_applicable",
            "top_down_legibility": "not_applicable"
          },
          {
            "number": 9,
            "label": "Side holding bay",
            "category": "area",
            "position_hint": "Northeast side annex immediately east of the dais-front zone",
            "base_layer_decision": "base_structural_unit",
            "render_role": "not_applicable",
            "top_down_legibility": "not_applicable"
          },
          {
            "number": 10,
            "label": "Cage movement clearance",
            "category": "area",
            "position_hint": "Unobstructed strip west of the barred opening, immediately south and east of the dais",
            "base_layer_decision": "base_structural_unit",
            "render_role": "not_applicable",
            "top_down_legibility": "not_applicable"
          },
          {
            "number": 11,
            "label": "West stained-glass opening",
            "category": "opening",
            "position_hint": "Middle portion of the west exterior sanctuary wall",
            "base_layer_decision": "base_opening",
            "render_role": "not_applicable",
            "top_down_legibility": "not_applicable"
          },
          {
            "number": 12,
            "label": "East stained-glass opening",
            "category": "opening",
            "position_hint": "Middle portion of the east exterior sanctuary wall, south of the holding bay",
            "base_layer_decision": "base_opening",
            "render_role": "not_applicable",
            "top_down_legibility": "not_applicable"
          },
          {
            "number": 13,
            "label": "Balcony balustrade",
            "category": "prop",
            "position_hint": "Continuous inner edge of the U-shaped upper balcony, overlooking the nave",
            "base_layer_decision": "base_persistent_fixture",
            "render_role": "not_applicable",
            "top_down_legibility": "not_applicable"
          }
        ],
        "transient_markers_to_describe": [
          {
            "number": 14,
            "label": "Movable steel cage",
            "category": "prop",
            "position_hint": "Event-dependent position between the side holding bay and the clearance west of its barred opening; never a permanent nave fixture",
            "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,
          3,
          4,
          6,
          9,
          10
        ],
        "dominant_target_unit_marker_number": null,
        "clean_background_expected": false,
        "diagnostics": [
          "multiple base_structural_unit markers in use_numbered_elements ([1, 3, 4, 6, 9, 10]); dominant_target_unit_marker_number left empty (W19B-1 lock — no lexical disambiguation)"
        ]
      },
      "L229B01": {
        "bg_id": "L229B01",
        "fp_id": "fp_church_forecourt_arena",
        "use_numbered_elements": [
          1,
          2,
          3,
          4,
          5,
          6,
          7,
          8,
          9,
          10,
          13,
          14,
          16,
          17
        ],
        "ignore_numbered_elements": [],
        "base_markers_to_reference": [
          {
            "number": 1,
            "label": "Arena floor",
            "category": "area",
            "position_hint": "central open rectangle between spectator banks and the northern leader platform",
            "base_layer_decision": "base_structural_unit",
            "render_role": "not_applicable",
            "top_down_legibility": "not_applicable"
          },
          {
            "number": 2,
            "label": "Cage lift aperture",
            "category": "opening",
            "position_hint": "western end of the arena floor, clear of the west spectator bank",
            "base_layer_decision": "base_opening",
            "render_role": "not_applicable",
            "top_down_legibility": "not_applicable"
          },
          {
            "number": 3,
            "label": "Lift cage assembly",
            "category": "furniture",
            "position_hint": "inside number 2, represented by its permanent plan footprint",
            "base_layer_decision": "base_persistent_fixture",
            "render_role": "not_applicable",
            "top_down_legibility": "not_applicable"
          },
          {
            "number": 4,
            "label": "Cage gate",
            "category": "opening",
            "position_hint": "east face of number 3, facing the arena center",
            "base_layer_decision": "base_opening",
            "render_role": "not_applicable",
            "top_down_legibility": "not_applicable"
          },
          {
            "number": 5,
            "label": "West spectator bank",
            "category": "furniture",
            "position_hint": "west side of the arena, outside the lift footprint",
            "base_layer_decision": "base_persistent_furniture",
            "render_role": "not_applicable",
            "top_down_legibility": "not_applicable"
          },
          {
            "number": 6,
            "label": "East spectator bank",
            "category": "furniture",
            "position_hint": "east side of the arena opposite the cage lift",
            "base_layer_decision": "base_persistent_furniture",
            "render_role": "not_applicable",
            "top_down_legibility": "not_applicable"
          },
          {
            "number": 7,
            "label": "South spectator bank",
            "category": "furniture",
            "position_hint": "south side of the arena, between the corner exit passages",
            "base_layer_decision": "base_persistent_furniture",
            "render_role": "not_applicable",
            "top_down_legibility": "not_applicable"
          },
          {
            "number": 8,
            "label": "Leader platform",
            "category": "area",
            "position_hint": "north side of the arena, in front of the rear circulation aisle",
            "base_layer_decision": "base_structural_unit",
            "render_role": "not_applicable",
            "top_down_legibility": "not_applicable"
          },
          {
            "number": 9,
            "label": "Leader chair",
            "category": "furniture",
            "position_hint": "center of number 8, facing south across the arena",
            "base_layer_decision": "base_persistent_furniture",
            "render_role": "not_applicable",
            "top_down_legibility": "not_applicable"
          },
          {
            "number": 10,
            "label": "Rear circulation aisle",
            "category": "area",
            "position_hint": "between the leader platform and church threshold, connecting around both side seating banks",
            "base_layer_decision": "base_structural_unit",
            "render_role": "not_applicable",
            "top_down_legibility": "not_applicable"
          },
          {
            "number": 13,
            "label": "Church threshold strip",
            "category": "area",
            "position_hint": "northern edge of the plan immediately outside the church frontage",
            "base_layer_decision": "base_structural_unit",
            "render_role": "not_applicable",
            "top_down_legibility": "not_applicable"
          },
          {
            "number": 14,
            "label": "Church entrance",
            "category": "opening",
            "position_hint": "center of the northern frontage wall adjoining number 13",
            "base_layer_decision": "base_opening",
            "render_role": "not_applicable",
            "top_down_legibility": "not_applicable"
          }
        ],
        "transient_markers_to_describe": [
          {
            "number": 16,
            "label": "Temporary west torch",
            "category": "prop",
            "position_hint": "arena-side edge of the west spectator bank, away from the cage gate and escape passage",
            "base_layer_decision": "state_overlay_transient_object",
            "render_role": "not_applicable",
            "top_down_legibility": "not_applicable"
          },
          {
            "number": 17,
            "label": "Temporary east torch",
            "category": "prop",
            "position_hint": "arena-side edge of the east spectator bank, outside the confrontation corridor",
            "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,
          8,
          10,
          13
        ],
        "dominant_target_unit_marker_number": null,
        "clean_background_expected": false,
        "diagnostics": [
          "multiple base_structural_unit markers in use_numbered_elements ([1, 8, 10, 13]); dominant_target_unit_marker_number left empty (W19B-1 lock — no lexical disambiguation)"
        ]
      },
      "L222B02": {
        "bg_id": "L222B02",
        "fp_id": "fp_dungeon_cell",
        "use_numbered_elements": [
          1,
          2,
          3,
          4,
          5,
          6,
          7
        ],
        "ignore_numbered_elements": [],
        "base_markers_to_reference": [
          {
            "number": 1,
            "label": "Cell enclosure",
            "category": "area",
            "position_hint": "main rectangular interior, bounded by solid north, east, and west walls and south barred frontage",
            "base_layer_decision": "base_structural_unit",
            "render_role": "not_applicable",
            "top_down_legibility": "not_applicable"
          },
          {
            "number": 2,
            "label": "Barred frontage",
            "category": "opening",
            "position_hint": "south boundary of the cell, adjoining the exterior access strip",
            "base_layer_decision": "base_opening",
            "render_role": "not_applicable",
            "top_down_legibility": "not_applicable"
          },
          {
            "number": 3,
            "label": "Barred access gate",
            "category": "opening",
            "position_hint": "east end of the south frontage; conventional schematic access placement",
            "base_layer_decision": "base_opening",
            "render_role": "not_applicable",
            "top_down_legibility": "not_applicable"
          },
          {
            "number": 4,
            "label": "Bedding corner",
            "category": "area",
            "position_hint": "northwest corner inside the cell, without an enclosing partition",
            "base_layer_decision": "base_structural_unit",
            "render_role": "not_applicable",
            "top_down_legibility": "not_applicable"
          },
          {
            "number": 5,
            "label": "Exterior access strip",
            "category": "area",
            "position_hint": "narrow strip directly south of the barred frontage",
            "base_layer_decision": "base_structural_unit",
            "render_role": "not_applicable",
            "top_down_legibility": "not_applicable"
          }
        ],
        "transient_markers_to_describe": [
          {
            "number": 6,
            "label": "Loose hay pile",
            "category": "prop",
            "position_hint": "inside number 4 against the northwest walls; maintain this position across both shots",
            "base_layer_decision": "state_overlay_transient_object",
            "render_role": "not_applicable",
            "top_down_legibility": "not_applicable"
          },
          {
            "number": 7,
            "label": "Pooled floor water",
            "category": "prop",
            "position_hint": "west-central cell floor, immediately southeast of number 4, leaving the gate approach unobstructed",
            "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,
          4,
          5
        ],
        "dominant_target_unit_marker_number": null,
        "clean_background_expected": false,
        "diagnostics": [
          "multiple base_structural_unit markers in use_numbered_elements ([1, 4, 5]); dominant_target_unit_marker_number left empty (W19B-1 lock — no lexical disambiguation)"
        ]
      },
      "L238B01": {
        "bg_id": "L238B01",
        "fp_id": "fp_robot_parts_warehouse",
        "use_numbered_elements": [
          1,
          2,
          3,
          4,
          5,
          6,
          7
        ],
        "ignore_numbered_elements": [],
        "base_markers_to_reference": [
          {
            "number": 1,
            "label": "Warehouse hall",
            "category": "area",
            "position_hint": "central open floor within the rectangular warehouse shell",
            "base_layer_decision": "base_structural_unit",
            "render_role": "not_applicable",
            "top_down_legibility": "not_applicable"
          },
          {
            "number": 2,
            "label": "Wide entry door",
            "category": "opening",
            "position_hint": "south wall toward the southwest corner",
            "base_layer_decision": "base_opening",
            "render_role": "not_applicable",
            "top_down_legibility": "not_applicable"
          },
          {
            "number": 3,
            "label": "Exterior threshold",
            "category": "area",
            "position_hint": "shallow strip immediately south of the entry door",
            "base_layer_decision": "base_structural_unit",
            "render_role": "not_applicable",
            "top_down_legibility": "not_applicable"
          },
          {
            "number": 4,
            "label": "Broken robot storage",
            "category": "area",
            "position_hint": "northwest corner, against the north and west walls",
            "base_layer_decision": "base_structural_unit",
            "render_role": "not_applicable",
            "top_down_legibility": "not_applicable"
          },
          {
            "number": 5,
            "label": "Interaction space",
            "category": "area",
            "position_hint": "northeast portion of the hall, directly south of the refuge",
            "base_layer_decision": "base_structural_unit",
            "render_role": "not_applicable",
            "top_down_legibility": "not_applicable"
          },
          {
            "number": 6,
            "label": "Refuge floor location",
            "category": "area",
            "position_hint": "against the north wall near the northeast corner, immediately behind the screening position",
            "base_layer_decision": "base_structural_unit",
            "render_role": "not_applicable",
            "top_down_legibility": "not_applicable"
          }
        ],
        "transient_markers_to_describe": [
          {
            "number": 7,
            "label": "Movable screening box",
            "category": "prop",
            "position_hint": "initially along the south edge of number 6, between numbers 5 and 6; moved aside locally for the final reveal",
            "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,
          3,
          4,
          5,
          6
        ],
        "dominant_target_unit_marker_number": null,
        "clean_background_expected": false,
        "diagnostics": [
          "multiple base_structural_unit markers in use_numbered_elements ([1, 3, 4, 5, 6]); dominant_target_unit_marker_number left empty (W19B-1 lock — no lexical disambiguation)"
        ]
      },
      "L239B01": {
        "bg_id": "L239B01",
        "fp_id": "fp_collapsed_store_site",
        "use_numbered_elements": [
          1,
          2,
          3,
          4,
          5,
          6,
          7,
          8,
          9,
          10,
          11,
          12
        ],
        "ignore_numbered_elements": [],
        "base_markers_to_reference": [
          {
            "number": 1,
            "label": "Remaining building shell",
            "category": "area",
            "position_hint": "Northern third of the site, including connected surviving perimeter wall runs",
            "base_layer_decision": "base_structural_unit",
            "render_role": "not_applicable",
            "top_down_legibility": "not_applicable"
          },
          {
            "number": 2,
            "label": "Collapsed rubble terrain",
            "category": "area",
            "position_hint": "Central forecourt against the broken southern side of the building",
            "base_layer_decision": "base_structural_unit",
            "render_role": "not_applicable",
            "top_down_legibility": "not_applicable"
          },
          {
            "number": 3,
            "label": "Approach path",
            "category": "area",
            "position_hint": "From the southern site edge, bending north between pools and rubble toward the entry",
            "base_layer_decision": "base_structural_unit",
            "render_role": "not_applicable",
            "top_down_legibility": "not_applicable"
          },
          {
            "number": 4,
            "label": "Entry breach",
            "category": "opening",
            "position_hint": "Near the center of the south-facing building perimeter",
            "base_layer_decision": "base_opening",
            "render_role": "not_applicable",
            "top_down_legibility": "not_applicable"
          },
          {
            "number": 5,
            "label": "Threshold apron",
            "category": "area",
            "position_hint": "Immediately south of the entry breach at the northern end of the approach",
            "base_layer_decision": "base_structural_unit",
            "render_role": "not_applicable",
            "top_down_legibility": "not_applicable"
          },
          {
            "number": 6,
            "label": "Concrete overlook slab",
            "category": "area",
            "position_hint": "Eastern shoulder of the surviving shell, east of the breach, overlooking the forecourt",
            "base_layer_decision": "base_structural_unit",
            "render_role": "not_applicable",
            "top_down_legibility": "not_applicable"
          },
          {
            "number": 7,
            "label": "Western pool",
            "category": "area",
            "position_hint": "West of the central approach, between moss ground and collapsed terrain",
            "base_layer_decision": "base_structural_unit",
            "render_role": "not_applicable",
            "top_down_legibility": "not_applicable"
          },
          {
            "number": 8,
            "label": "Eastern pool",
            "category": "area",
            "position_hint": "Southeast of the threshold, east of the dry approach route",
            "base_layer_decision": "base_structural_unit",
            "render_role": "not_applicable",
            "top_down_legibility": "not_applicable"
          },
          {
            "number": 9,
            "label": "Western tree-growth area",
            "category": "area",
            "position_hint": "Along the western site boundary beside the pool and rubble",
            "base_layer_decision": "base_structural_unit",
            "render_role": "not_applicable",
            "top_down_legibility": "not_applicable"
          },
          {
            "number": 10,
            "label": "Eastern tree-growth area",
            "category": "area",
            "position_hint": "Along the eastern forecourt boundary, outside the overlook-to-path sight corridor",
            "base_layer_decision": "base_structural_unit",
            "render_role": "not_applicable",
            "top_down_legibility": "not_applicable"
          },
          {
            "number": 11,
            "label": "Moss-colonized ground",
            "category": "area",
            "position_hint": "Southwest of the threshold, adjoining the western edge of the approach",
            "base_layer_decision": "base_structural_unit",
            "render_role": "not_applicable",
            "top_down_legibility": "not_applicable"
          },
          {
            "number": 12,
            "label": "Flowering-vegetation patch",
            "category": "area",
            "position_hint": "Beside the eastern edge of the lower southern approach",
            "base_layer_decision": "base_structural_unit",
            "render_role": "not_applicable",
            "top_down_legibility": "not_applicable"
          }
        ],
        "transient_markers_to_describe": [],
        "ignored_state_overlay_markers": [],
        "target_unit_marker_numbers": [
          1,
          2,
          3,
          5,
          6,
          7,
          8,
          9,
          10,
          11,
          12
        ],
        "dominant_target_unit_marker_number": null,
        "clean_background_expected": true,
        "diagnostics": [
          "multiple base_structural_unit markers in use_numbered_elements ([1, 2, 3, 5, 6, 7, 8, 9, 10, 11, 12]); dominant_target_unit_marker_number left empty (W19B-1 lock — no lexical disambiguation)"
        ]
      },
      "L240B01": {
        "bg_id": "L240B01",
        "fp_id": "fp_collapsed_store_ground",
        "use_numbered_elements": [
          1,
          3,
          4,
          5,
          6,
          7,
          8,
          9,
          10,
          11,
          12,
          13,
          15
        ],
        "ignore_numbered_elements": [],
        "base_markers_to_reference": [
          {
            "number": 1,
            "label": "Ground-floor approach",
            "category": "area",
            "position_hint": "west side of the crop, between the southwest entrance and northwest escalator approach",
            "base_layer_decision": "base_structural_unit",
            "render_role": "not_applicable",
            "top_down_legibility": "not_applicable"
          },
          {
            "number": 3,
            "label": "Store directory",
            "category": "prop",
            "position_hint": "west side of the approach, just inside the entrance breach",
            "base_layer_decision": "base_persistent_fixture",
            "render_role": "not_applicable",
            "top_down_legibility": "not_applicable"
          },
          {
            "number": 4,
            "label": "West wall fragment",
            "category": "area",
            "position_hint": "west-central interior, beside the directory and south of the escalator approach",
            "base_layer_decision": "base_structural_unit",
            "render_role": "not_applicable",
            "top_down_legibility": "not_applicable"
          },
          {
            "number": 5,
            "label": "North wall fragment",
            "category": "area",
            "position_hint": "north side of the escalator approach, framing its partially obstructed entrance",
            "base_layer_decision": "base_structural_unit",
            "render_role": "not_applicable",
            "top_down_legibility": "not_applicable"
          },
          {
            "number": 6,
            "label": "Escalator approach",
            "category": "area",
            "position_hint": "northwest corner of the collapse opening, reached from the west circulation strip",
            "base_layer_decision": "base_structural_unit",
            "render_role": "not_applicable",
            "top_down_legibility": "not_applicable"
          },
          {
            "number": 7,
            "label": "Descending escalator",
            "category": "prop",
            "position_hint": "northwest edge of the opening, running southeast toward the basement landing",
            "base_layer_decision": "base_persistent_fixture",
            "render_role": "not_applicable",
            "top_down_legibility": "not_applicable"
          },
          {
            "number": 8,
            "label": "Collapse opening",
            "category": "opening",
            "position_hint": "large central and eastern polygon, exposing the basement below",
            "base_layer_decision": "base_opening",
            "render_role": "not_applicable",
            "top_down_legibility": "not_applicable"
          },
          {
            "number": 9,
            "label": "Surviving south rim",
            "category": "area",
            "position_hint": "ground-floor strip along the south boundary of the collapse opening",
            "base_layer_decision": "base_structural_unit",
            "render_role": "not_applicable",
            "top_down_legibility": "not_applicable"
          },
          {
            "number": 10,
            "label": "Exposed basement retail area",
            "category": "area",
            "position_hint": "inside the opening footprint, beneath the ground-floor slab",
            "base_layer_decision": "base_structural_unit",
            "render_role": "not_applicable",
            "top_down_legibility": "not_applicable"
          },
          {
            "number": 11,
            "label": "Basement landing",
            "category": "area",
            "position_hint": "central part of the exposed basement, at the lower end of the escalator",
            "base_layer_decision": "base_structural_unit",
            "render_role": "not_applicable",
            "top_down_legibility": "not_applicable"
          },
          {
            "number": 12,
            "label": "Canned-food display",
            "category": "furniture",
            "position_hint": "southeast part of the exposed basement, below and inward from the south rim",
            "base_layer_decision": "base_persistent_furniture",
            "render_role": "not_applicable",
            "top_down_legibility": "not_applicable"
          },
          {
            "number": 13,
            "label": "Packaged-food display",
            "category": "furniture",
            "position_hint": "northeast part of the exposed basement, beyond the central landing",
            "base_layer_decision": "base_persistent_furniture",
            "render_role": "not_applicable",
            "top_down_legibility": "not_applicable"
          }
        ],
        "transient_markers_to_describe": [
          {
            "number": 15,
            "label": "Lowered rescue rope",
            "category": "prop",
            "position_hint": "descending from the south rim into the opening toward the clear basement landing",
            "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,
          4,
          5,
          6,
          9,
          10,
          11
        ],
        "dominant_target_unit_marker_number": null,
        "clean_background_expected": false,
        "diagnostics": [
          "multiple base_structural_unit markers in use_numbered_elements ([1, 4, 5, 6, 9, 10, 11]); dominant_target_unit_marker_number left empty (W19B-1 lock — no lexical disambiguation)"
        ]
      },
      "L248B03": {
        "bg_id": "L248B03",
        "fp_id": "fp_assigned_vehicle_cabin",
        "use_numbered_elements": [
          2,
          9,
          14
        ],
        "ignore_numbered_elements": [
          15,
          16
        ],
        "base_markers_to_reference": [
          {
            "number": 2,
            "label": "Rear passenger zone",
            "category": "area",
            "position_hint": "rear half of cabin, below front seats",
            "base_layer_decision": "base_structural_unit",
            "render_role": "not_applicable",
            "top_down_legibility": "not_applicable"
          },
          {
            "number": 9,
            "label": "Rear bench",
            "category": "furniture",
            "position_hint": "transverse bench against rear cabin boundary",
            "base_layer_decision": "base_persistent_furniture",
            "render_role": "not_applicable",
            "top_down_legibility": "not_applicable"
          },
          {
            "number": 14,
            "label": "Right-side window",
            "category": "opening",
            "position_hint": "within right-side door, beside passenger seating and access space",
            "base_layer_decision": "base_opening",
            "render_role": "not_applicable",
            "top_down_legibility": "not_applicable"
          }
        ],
        "transient_markers_to_describe": [],
        "ignored_state_overlay_markers": [
          {
            "number": 15,
            "label": "Rescue doorway open state",
            "category": "opening",
            "position_hint": "right-side door number 12 opened to expose threshold number 3 and exterior strip number 4",
            "base_layer_decision": "state_overlay_plot_cue",
            "render_role": "not_applicable",
            "top_down_legibility": "not_applicable"
          },
          {
            "number": 16,
            "label": "Exterior rescue flashlight backlight",
            "category": "prop",
            "position_hint": "outside number 12, directed inward across number 3 from number 4",
            "base_layer_decision": "state_overlay_plot_cue",
            "render_role": "not_applicable",
            "top_down_legibility": "not_applicable"
          }
        ],
        "target_unit_marker_numbers": [
          2
        ],
        "dominant_target_unit_marker_number": 2,
        "clean_background_expected": true,
        "diagnostics": []
      },
      "L248B02": {
        "bg_id": "L248B02",
        "fp_id": "fp_assigned_vehicle_cabin",
        "use_numbered_elements": [
          2,
          3,
          4,
          9,
          12,
          15,
          16
        ],
        "ignore_numbered_elements": [],
        "base_markers_to_reference": [
          {
            "number": 2,
            "label": "Rear passenger zone",
            "category": "area",
            "position_hint": "rear half of cabin, below front seats",
            "base_layer_decision": "base_structural_unit",
            "render_role": "not_applicable",
            "top_down_legibility": "not_applicable"
          },
          {
            "number": 3,
            "label": "Right-side threshold",
            "category": "area",
            "position_hint": "right cabin edge beside passenger footwell and access door",
            "base_layer_decision": "base_structural_unit",
            "render_role": "not_applicable",
            "top_down_legibility": "not_applicable"
          },
          {
            "number": 4,
            "label": "Exterior access strip",
            "category": "area",
            "position_hint": "narrow strip immediately outside right-side threshold",
            "base_layer_decision": "base_structural_unit",
            "render_role": "not_applicable",
            "top_down_legibility": "not_applicable"
          },
          {
            "number": 9,
            "label": "Rear bench",
            "category": "furniture",
            "position_hint": "transverse bench against rear cabin boundary",
            "base_layer_decision": "base_persistent_furniture",
            "render_role": "not_applicable",
            "top_down_legibility": "not_applicable"
          },
          {
            "number": 12,
            "label": "Right-side door and frame",
            "category": "opening",
            "position_hint": "right cabin boundary beside threshold, accessible from rear passenger zone",
            "base_layer_decision": "base_opening",
            "render_role": "not_applicable",
            "top_down_legibility": "not_applicable"
          }
        ],
        "transient_markers_to_describe": [
          {
            "number": 15,
            "label": "Rescue doorway open state",
            "category": "opening",
            "position_hint": "right-side door number 12 opened to expose threshold number 3 and exterior strip number 4",
            "base_layer_decision": "state_overlay_plot_cue",
            "render_role": "not_applicable",
            "top_down_legibility": "not_applicable"
          },
          {
            "number": 16,
            "label": "Exterior rescue flashlight backlight",
            "category": "prop",
            "position_hint": "outside number 12, directed inward across number 3 from number 4",
            "base_layer_decision": "state_overlay_plot_cue",
            "render_role": "not_applicable",
            "top_down_legibility": "not_applicable"
          }
        ],
        "ignored_state_overlay_markers": [],
        "target_unit_marker_numbers": [
          2,
          3,
          4
        ],
        "dominant_target_unit_marker_number": null,
        "clean_background_expected": false,
        "diagnostics": [
          "multiple base_structural_unit markers in use_numbered_elements ([2, 3, 4]); dominant_target_unit_marker_number left empty (W19B-1 lock — no lexical disambiguation)"
        ]
      },
      "L253B02": {
        "bg_id": "L253B02",
        "fp_id": "fp_clinic_ward",
        "use_numbered_elements": [
          1,
          2,
          3,
          4,
          5,
          6
        ],
        "ignore_numbered_elements": [],
        "base_markers_to_reference": [
          {
            "number": 1,
            "label": "Ward enclosure",
            "category": "area",
            "position_hint": "Entire rectangular room; marker just inside the north boundary",
            "base_layer_decision": "base_structural_unit",
            "render_role": "not_applicable",
            "top_down_legibility": "not_applicable"
          },
          {
            "number": 2,
            "label": "Private bedside zone",
            "category": "area",
            "position_hint": "Northwestern portion of the ward, surrounding the bed",
            "base_layer_decision": "base_structural_unit",
            "render_role": "not_applicable",
            "top_down_legibility": "not_applicable"
          },
          {
            "number": 3,
            "label": "Shared gathering zone",
            "category": "area",
            "position_hint": "Northeastern open floor beside the bed",
            "base_layer_decision": "base_structural_unit",
            "render_role": "not_applicable",
            "top_down_legibility": "not_applicable"
          },
          {
            "number": 4,
            "label": "Entry circulation strip",
            "category": "area",
            "position_hint": "Southern floor strip connecting the entrance, bed foot, and gathering zone",
            "base_layer_decision": "base_structural_unit",
            "render_role": "not_applicable",
            "top_down_legibility": "not_applicable"
          },
          {
            "number": 5,
            "label": "Patient bed",
            "category": "furniture",
            "position_hint": "Western half of the room, head north and foot south, offset from the west wall",
            "base_layer_decision": "base_persistent_furniture",
            "render_role": "not_applicable",
            "top_down_legibility": "not_applicable"
          },
          {
            "number": 6,
            "label": "Ward entry door",
            "category": "opening",
            "position_hint": "South wall near the southwest corner, swinging inward toward the west wall",
            "base_layer_decision": "base_opening",
            "render_role": "not_applicable",
            "top_down_legibility": "not_applicable"
          }
        ],
        "transient_markers_to_describe": [],
        "ignored_state_overlay_markers": [],
        "target_unit_marker_numbers": [
          1,
          2,
          3,
          4
        ],
        "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)"
        ]
      },
      "L253B01": {
        "bg_id": "L253B01",
        "fp_id": "fp_clinic_ward",
        "use_numbered_elements": [
          1,
          2,
          3,
          4,
          5
        ],
        "ignore_numbered_elements": [],
        "base_markers_to_reference": [
          {
            "number": 1,
            "label": "Ward enclosure",
            "category": "area",
            "position_hint": "Entire rectangular room; marker just inside the north boundary",
            "base_layer_decision": "base_structural_unit",
            "render_role": "not_applicable",
            "top_down_legibility": "not_applicable"
          },
          {
            "number": 2,
            "label": "Private bedside zone",
            "category": "area",
            "position_hint": "Northwestern portion of the ward, surrounding the bed",
            "base_layer_decision": "base_structural_unit",
            "render_role": "not_applicable",
            "top_down_legibility": "not_applicable"
          },
          {
            "number": 3,
            "label": "Shared gathering zone",
            "category": "area",
            "position_hint": "Northeastern open floor beside the bed",
            "base_layer_decision": "base_structural_unit",
            "render_role": "not_applicable",
            "top_down_legibility": "not_applicable"
          },
          {
            "number": 4,
            "label": "Entry circulation strip",
            "category": "area",
            "position_hint": "Southern floor strip connecting the entrance, bed foot, and gathering zone",
            "base_layer_decision": "base_structural_unit",
            "render_role": "not_applicable",
            "top_down_legibility": "not_applicable"
          },
          {
            "number": 5,
            "label": "Patient bed",
            "category": "furniture",
            "position_hint": "Western half of the room, head north and foot south, offset from the west wall",
            "base_layer_decision": "base_persistent_furniture",
            "render_role": "not_applicable",
            "top_down_legibility": "not_applicable"
          }
        ],
        "transient_markers_to_describe": [],
        "ignored_state_overlay_markers": [],
        "target_unit_marker_numbers": [
          1,
          2,
          3,
          4
        ],
        "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)"
        ]
      },
      "L256B02": {
        "bg_id": "L256B02",
        "fp_id": "fp_l256_aircraft_storage",
        "use_numbered_elements": [
          1,
          2,
          3,
          4,
          5,
          7,
          8,
          9,
          10,
          11,
          12,
          13
        ],
        "ignore_numbered_elements": [],
        "base_markers_to_reference": [
          {
            "number": 1,
            "label": "Storage hall",
            "category": "area",
            "position_hint": "Entire rectangular enclosure; marker just inside the north rear wall",
            "base_layer_decision": "base_structural_unit",
            "render_role": "not_applicable",
            "top_down_legibility": "not_applicable"
          },
          {
            "number": 2,
            "label": "West aircraft storage",
            "category": "area",
            "position_hint": "West side of the hall, left of the central viewing aisle",
            "base_layer_decision": "base_structural_unit",
            "render_role": "not_applicable",
            "top_down_legibility": "not_applicable"
          },
          {
            "number": 3,
            "label": "East aircraft storage",
            "category": "area",
            "position_hint": "East side of the hall, right of the central viewing aisle",
            "base_layer_decision": "base_structural_unit",
            "render_role": "not_applicable",
            "top_down_legibility": "not_applicable"
          },
          {
            "number": 4,
            "label": "Viewing aisle",
            "category": "area",
            "position_hint": "Central north-south circulation strip between the aircraft rows",
            "base_layer_decision": "base_structural_unit",
            "render_role": "not_applicable",
            "top_down_legibility": "not_applicable"
          },
          {
            "number": 5,
            "label": "Entrance threshold",
            "category": "area",
            "position_hint": "South-center interior immediately beyond the warehouse doorway",
            "base_layer_decision": "base_structural_unit",
            "render_role": "not_applicable",
            "top_down_legibility": "not_applicable"
          },
          {
            "number": 7,
            "label": "West front light aircraft",
            "category": "prop",
            "position_hint": "Southern parking position in the west storage zone, nose pointing south",
            "base_layer_decision": "base_persistent_furniture",
            "render_role": "not_applicable",
            "top_down_legibility": "not_applicable"
          },
          {
            "number": 8,
            "label": "West middle light aircraft",
            "category": "prop",
            "position_hint": "Middle parking position in the west storage zone, nose pointing south",
            "base_layer_decision": "base_persistent_furniture",
            "render_role": "not_applicable",
            "top_down_legibility": "not_applicable"
          },
          {
            "number": 9,
            "label": "West rear light aircraft",
            "category": "prop",
            "position_hint": "Northern parking position in the west storage zone, nose pointing south",
            "base_layer_decision": "base_persistent_furniture",
            "render_role": "not_applicable",
            "top_down_legibility": "not_applicable"
          },
          {
            "number": 10,
            "label": "East front light aircraft",
            "category": "prop",
            "position_hint": "Southern parking position in the east storage zone, nose pointing south",
            "base_layer_decision": "base_persistent_furniture",
            "render_role": "not_applicable",
            "top_down_legibility": "not_applicable"
          },
          {
            "number": 11,
            "label": "East middle light aircraft",
            "category": "prop",
            "position_hint": "Middle parking position in the east storage zone, nose pointing south",
            "base_layer_decision": "base_persistent_furniture",
            "render_role": "not_applicable",
            "top_down_legibility": "not_applicable"
          },
          {
            "number": 12,
            "label": "East rear light aircraft",
            "category": "prop",
            "position_hint": "Northern parking position in the east storage zone, nose pointing south",
            "base_layer_decision": "base_persistent_furniture",
            "render_role": "not_applicable",
            "top_down_legibility": "not_applicable"
          }
        ],
        "transient_markers_to_describe": [
          {
            "number": 13,
            "label": "Dust-covered inactive aircraft state",
            "category": "prop",
            "position_hint": "Applies across aircraft 7 through 12: heavy accumulated surface dust, stationary propellers, no exhaust or operating indications",
            "base_layer_decision": "state_overlay_plot_cue",
            "render_role": "not_applicable",
            "top_down_legibility": "not_applicable"
          }
        ],
        "ignored_state_overlay_markers": [],
        "target_unit_marker_numbers": [
          1,
          2,
          3,
          4,
          5
        ],
        "dominant_target_unit_marker_number": null,
        "clean_background_expected": false,
        "diagnostics": [
          "multiple base_structural_unit markers in use_numbered_elements ([1, 2, 3, 4, 5]); dominant_target_unit_marker_number left empty (W19B-1 lock — no lexical disambiguation)"
        ]
      },
      "L257B03": {
        "bg_id": "L257B03",
        "fp_id": "fp_l257_hangar",
        "use_numbered_elements": [
          1,
          2,
          3,
          4,
          5,
          6,
          7,
          8,
          9,
          10,
          11,
          12,
          13,
          14,
          15,
          16
        ],
        "ignore_numbered_elements": [],
        "base_markers_to_reference": [
          {
            "number": 1,
            "label": "Hangar enclosure",
            "category": "area",
            "position_hint": "entire rectangular interior; marker inside northwest corner",
            "base_layer_decision": "base_structural_unit",
            "render_role": "not_applicable",
            "top_down_legibility": "not_applicable"
          },
          {
            "number": 2,
            "label": "West aircraft parking area",
            "category": "area",
            "position_hint": "west side of hangar, beside central aisle",
            "base_layer_decision": "base_structural_unit",
            "render_role": "not_applicable",
            "top_down_legibility": "not_applicable"
          },
          {
            "number": 3,
            "label": "East aircraft parking area",
            "category": "area",
            "position_hint": "east side of hangar, beside central aisle",
            "base_layer_decision": "base_structural_unit",
            "render_role": "not_applicable",
            "top_down_legibility": "not_applicable"
          },
          {
            "number": 4,
            "label": "Central working aisle",
            "category": "area",
            "position_hint": "north-south open passage and working space between aircraft",
            "base_layer_decision": "base_structural_unit",
            "render_role": "not_applicable",
            "top_down_legibility": "not_applicable"
          },
          {
            "number": 5,
            "label": "Entrance threshold",
            "category": "area",
            "position_hint": "south interior strip immediately inside large doorway",
            "base_layer_decision": "base_structural_unit",
            "render_role": "not_applicable",
            "top_down_legibility": "not_applicable"
          },
          {
            "number": 6,
            "label": "Large aircraft doorway",
            "category": "opening",
            "position_hint": "center of south wall, aligned with central aisle",
            "base_layer_decision": "base_opening",
            "render_role": "not_applicable",
            "top_down_legibility": "not_applicable"
          },
          {
            "number": 7,
            "label": "Primary repair aircraft",
            "category": "prop",
            "position_hint": "southwest parking position, nose angled northeast toward central working space",
            "base_layer_decision": "base_persistent_furniture",
            "render_role": "not_applicable",
            "top_down_legibility": "not_applicable"
          },
          {
            "number": 8,
            "label": "Northwest parked aircraft",
            "category": "prop",
            "position_hint": "northwest parking position, nose angled southeast toward central working space",
            "base_layer_decision": "base_persistent_furniture",
            "render_role": "not_applicable",
            "top_down_legibility": "not_applicable"
          },
          {
            "number": 9,
            "label": "Southeast parked aircraft",
            "category": "prop",
            "position_hint": "southeast parking position, nose angled northwest toward central working space",
            "base_layer_decision": "base_persistent_furniture",
            "render_role": "not_applicable",
            "top_down_legibility": "not_applicable"
          },
          {
            "number": 10,
            "label": "Northeast parked aircraft",
            "category": "prop",
            "position_hint": "northeast parking position, nose angled southwest toward central working space",
            "base_layer_decision": "base_persistent_furniture",
            "render_role": "not_applicable",
            "top_down_legibility": "not_applicable"
          },
          {
            "number": 11,
            "label": "Southern overhead bulb fixture",
            "category": "prop",
            "position_hint": "ceiling above southern central aisle, just north of threshold",
            "base_layer_decision": "base_persistent_fixture",
            "render_role": "not_applicable",
            "top_down_legibility": "not_applicable"
          },
          {
            "number": 12,
            "label": "Middle overhead bulb fixture",
            "category": "prop",
            "position_hint": "ceiling above midpoint of central working aisle",
            "base_layer_decision": "base_persistent_fixture",
            "render_role": "not_applicable",
            "top_down_legibility": "not_applicable"
          },
          {
            "number": 13,
            "label": "Northern overhead bulb fixture",
            "category": "prop",
            "position_hint": "ceiling above northern central aisle",
            "base_layer_decision": "base_persistent_fixture",
            "render_role": "not_applicable",
            "top_down_legibility": "not_applicable"
          }
        ],
        "transient_markers_to_describe": [
          {
            "number": 14,
            "label": "Restarting engines and black exhaust",
            "category": "prop",
            "position_hint": "exhaust spreading from aircraft 7 and additional aircraft around central aisle 4",
            "base_layer_decision": "state_overlay_plot_cue",
            "render_role": "not_applicable",
            "top_down_legibility": "not_applicable"
          },
          {
            "number": 15,
            "label": "Fluctuating bulb power",
            "category": "prop",
            "position_hint": "surviving overhead bulb fixtures 11 and 13",
            "base_layer_decision": "state_overlay_plot_cue",
            "render_role": "not_applicable",
            "top_down_legibility": "not_applicable"
          },
          {
            "number": 16,
            "label": "Burst bulb aftermath",
            "category": "prop",
            "position_hint": "damaged bulb at fixture 12, with sparse fragments directly beneath it",
            "base_layer_decision": "state_overlay_plot_cue",
            "render_role": "not_applicable",
            "top_down_legibility": "not_applicable"
          }
        ],
        "ignored_state_overlay_markers": [],
        "target_unit_marker_numbers": [
          1,
          2,
          3,
          4,
          5
        ],
        "dominant_target_unit_marker_number": null,
        "clean_background_expected": false,
        "diagnostics": [
          "multiple base_structural_unit markers in use_numbered_elements ([1, 2, 3, 4, 5]); dominant_target_unit_marker_number left empty (W19B-1 lock — no lexical disambiguation)"
        ]
      },
      "L263B02": {
        "bg_id": "L263B02",
        "fp_id": "fp_boat_crew_cabin",
        "use_numbered_elements": [
          1,
          4,
          5,
          6
        ],
        "ignore_numbered_elements": [
          7
        ],
        "base_markers_to_reference": [
          {
            "number": 1,
            "label": "Cabin enclosure",
            "category": "area",
            "position_hint": "entire rectangular cabin; marker in the northern interior",
            "base_layer_decision": "base_structural_unit",
            "render_role": "not_applicable",
            "top_down_legibility": "not_applicable"
          },
          {
            "number": 4,
            "label": "Sofa",
            "category": "furniture",
            "position_hint": "against the west wall, long axis north-to-south, clear of the threshold",
            "base_layer_decision": "base_persistent_furniture",
            "render_role": "not_applicable",
            "top_down_legibility": "not_applicable"
          },
          {
            "number": 5,
            "label": "Open floor clearance",
            "category": "area",
            "position_hint": "central and eastern cabin floor between the sofa and east bulkhead",
            "base_layer_decision": "base_structural_unit",
            "render_role": "not_applicable",
            "top_down_legibility": "not_applicable"
          },
          {
            "number": 6,
            "label": "Impact-side bulkhead",
            "category": "area",
            "position_hint": "continuous east boundary of the cabin opposite the sofa",
            "base_layer_decision": "base_structural_unit",
            "render_role": "not_applicable",
            "top_down_legibility": "not_applicable"
          }
        ],
        "transient_markers_to_describe": [],
        "ignored_state_overlay_markers": [
          {
            "number": 7,
            "label": "Severe storm heel",
            "category": "area",
            "position_hint": "whole cabin orientation; floor descends toward number 6 during the storm moment, without structural deformation",
            "base_layer_decision": "state_overlay_plot_cue",
            "render_role": "not_applicable",
            "top_down_legibility": "not_applicable"
          }
        ],
        "target_unit_marker_numbers": [
          1,
          5,
          6
        ],
        "dominant_target_unit_marker_number": null,
        "clean_background_expected": true,
        "diagnostics": [
          "multiple base_structural_unit markers in use_numbered_elements ([1, 5, 6]); dominant_target_unit_marker_number left empty (W19B-1 lock — no lexical disambiguation)"
        ]
      },
      "L263B01": {
        "bg_id": "L263B01",
        "fp_id": "fp_boat_crew_cabin",
        "use_numbered_elements": [
          1,
          4,
          5,
          6,
          7
        ],
        "ignore_numbered_elements": [],
        "base_markers_to_reference": [
          {
            "number": 1,
            "label": "Cabin enclosure",
            "category": "area",
            "position_hint": "entire rectangular cabin; marker in the northern interior",
            "base_layer_decision": "base_structural_unit",
            "render_role": "not_applicable",
            "top_down_legibility": "not_applicable"
          },
          {
            "number": 4,
            "label": "Sofa",
            "category": "furniture",
            "position_hint": "against the west wall, long axis north-to-south, clear of the threshold",
            "base_layer_decision": "base_persistent_furniture",
            "render_role": "not_applicable",
            "top_down_legibility": "not_applicable"
          },
          {
            "number": 5,
            "label": "Open floor clearance",
            "category": "area",
            "position_hint": "central and eastern cabin floor between the sofa and east bulkhead",
            "base_layer_decision": "base_structural_unit",
            "render_role": "not_applicable",
            "top_down_legibility": "not_applicable"
          },
          {
            "number": 6,
            "label": "Impact-side bulkhead",
            "category": "area",
            "position_hint": "continuous east boundary of the cabin opposite the sofa",
            "base_layer_decision": "base_structural_unit",
            "render_role": "not_applicable",
            "top_down_legibility": "not_applicable"
          }
        ],
        "transient_markers_to_describe": [
          {
            "number": 7,
            "label": "Severe storm heel",
            "category": "area",
            "position_hint": "whole cabin orientation; floor descends toward number 6 during the storm moment, without structural deformation",
            "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,
          5,
          6
        ],
        "dominant_target_unit_marker_number": null,
        "clean_background_expected": false,
        "diagnostics": [
          "multiple base_structural_unit markers in use_numbered_elements ([1, 5, 6]); dominant_target_unit_marker_number left empty (W19B-1 lock — no lexical disambiguation)"
        ]
      },
      "L261B01": {
        "bg_id": "L261B01",
        "fp_id": "fp_boat_deck",
        "use_numbered_elements": [
          1,
          5,
          6,
          7,
          8,
          9,
          10
        ],
        "ignore_numbered_elements": [],
        "base_markers_to_reference": [
          {
            "number": 1,
            "label": "Main working deck",
            "category": "area",
            "position_hint": "center and lower portion of the plan, between cabin access and right-hand deck edge",
            "base_layer_decision": "base_structural_unit",
            "render_role": "not_applicable",
            "top_down_legibility": "not_applicable"
          },
          {
            "number": 5,
            "label": "Supporting post",
            "category": "prop",
            "position_hint": "right side of the working deck, immediately inboard of number 6 and within reach of the overboard position",
            "base_layer_decision": "base_persistent_fixture",
            "render_role": "not_applicable",
            "top_down_legibility": "not_applicable"
          },
          {
            "number": 6,
            "label": "Deck-edge barrier",
            "category": "prop",
            "position_hint": "right-hand deck perimeter, with marker beside the segment opposite number 5",
            "base_layer_decision": "base_persistent_fixture",
            "render_role": "not_applicable",
            "top_down_legibility": "not_applicable"
          },
          {
            "number": 7,
            "label": "Cargo-stowage area",
            "category": "area",
            "position_hint": "lower left of the working deck, outside the doorway-to-post circulation route",
            "base_layer_decision": "base_structural_unit",
            "render_role": "not_applicable",
            "top_down_legibility": "not_applicable"
          },
          {
            "number": 8,
            "label": "Exterior water",
            "category": "area",
            "position_hint": "narrow strip immediately beyond the right-hand deck perimeter",
            "base_layer_decision": "base_structural_unit",
            "render_role": "not_applicable",
            "top_down_legibility": "not_applicable"
          }
        ],
        "transient_markers_to_describe": [
          {
            "number": 9,
            "label": "Typhoon rain and deck wash",
            "category": "area",
            "position_hint": "across number 1 and along the boundary between numbers 6 and 8; overlay only",
            "base_layer_decision": "state_overlay_plot_cue",
            "render_role": "not_applicable",
            "top_down_legibility": "not_applicable"
          },
          {
            "number": 10,
            "label": "Loose heavy cargo",
            "category": "prop",
            "position_hint": "associated with number 7; displacement toward the deck edge is shot-dependent and must not become a fixed base-plan position",
            "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,
          7,
          8
        ],
        "dominant_target_unit_marker_number": null,
        "clean_background_expected": false,
        "diagnostics": [
          "multiple base_structural_unit markers in use_numbered_elements ([1, 7, 8]); dominant_target_unit_marker_number left empty (W19B-1 lock — no lexical disambiguation)"
        ]
      },
      "L266B02": {
        "bg_id": "L266B02",
        "fp_id": "fp_l266_shelter_room",
        "use_numbered_elements": [
          1,
          2,
          5,
          6,
          11,
          12,
          13
        ],
        "ignore_numbered_elements": [],
        "base_markers_to_reference": [
          {
            "number": 1,
            "label": "Shelter bedroom",
            "category": "area",
            "position_hint": "main northern portion of the suite",
            "base_layer_decision": "base_structural_unit",
            "render_role": "not_applicable",
            "top_down_legibility": "not_applicable"
          },
          {
            "number": 2,
            "label": "Entry threshold",
            "category": "area",
            "position_hint": "southwest corner, continuous with bedroom circulation",
            "base_layer_decision": "base_structural_unit",
            "render_role": "not_applicable",
            "top_down_legibility": "not_applicable"
          },
          {
            "number": 5,
            "label": "Single bed",
            "category": "furniture",
            "position_hint": "northwest bedroom, head toward north wall",
            "base_layer_decision": "base_persistent_furniture",
            "render_role": "not_applicable",
            "top_down_legibility": "not_applicable"
          },
          {
            "number": 6,
            "label": "Sea-facing window",
            "category": "opening",
            "position_hint": "north bedroom wall, east of bed",
            "base_layer_decision": "base_opening",
            "render_role": "not_applicable",
            "top_down_legibility": "not_applicable"
          },
          {
            "number": 11,
            "label": "Video-call monitor",
            "category": "prop",
            "position_hint": "east bedroom wall, north of shower compartment",
            "base_layer_decision": "base_persistent_fixture",
            "render_role": "not_applicable",
            "top_down_legibility": "not_applicable"
          },
          {
            "number": 12,
            "label": "Call-control switch",
            "category": "prop",
            "position_hint": "east bedroom wall immediately beside monitor, reachable from clear floor",
            "base_layer_decision": "base_persistent_fixture",
            "render_role": "not_applicable",
            "top_down_legibility": "not_applicable"
          },
          {
            "number": 13,
            "label": "Fluorescent ceiling fixture",
            "category": "prop",
            "position_hint": "ceiling above central bedroom circulation, shown by plan projection",
            "base_layer_decision": "base_persistent_fixture",
            "render_role": "not_applicable",
            "top_down_legibility": "not_applicable"
          }
        ],
        "transient_markers_to_describe": [],
        "ignored_state_overlay_markers": [],
        "target_unit_marker_numbers": [
          1,
          2
        ],
        "dominant_target_unit_marker_number": null,
        "clean_background_expected": true,
        "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)"
        ]
      },
      "L268B01": {
        "bg_id": "L268B01",
        "fp_id": "fp_l268_main_center",
        "use_numbered_elements": [
          1,
          5,
          6,
          7,
          8,
          9,
          10,
          11,
          12,
          13,
          14,
          15,
          16,
          18,
          21,
          22,
          23
        ],
        "ignore_numbered_elements": [],
        "base_markers_to_reference": [
          {
            "number": 1,
            "label": "Main research hall",
            "category": "area",
            "position_hint": "western portion of the footprint",
            "base_layer_decision": "base_structural_unit",
            "render_role": "not_applicable",
            "top_down_legibility": "not_applicable"
          },
          {
            "number": 5,
            "label": "Connected laboratory",
            "category": "area",
            "position_hint": "eastern portion of the footprint, surrounding enclosure 7",
            "base_layer_decision": "base_structural_unit",
            "render_role": "not_applicable",
            "top_down_legibility": "not_applicable"
          },
          {
            "number": 6,
            "label": "Automatic laboratory doorway",
            "category": "opening",
            "position_hint": "southern portion of the partition between hall 1 and laboratory 5",
            "base_layer_decision": "base_opening",
            "render_role": "not_applicable",
            "top_down_legibility": "not_applicable"
          },
          {
            "number": 7,
            "label": "Circular glazed testing enclosure",
            "category": "area",
            "position_hint": "central portion of laboratory 5, including its circular glass perimeter",
            "base_layer_decision": "base_structural_unit",
            "render_role": "not_applicable",
            "top_down_legibility": "not_applicable"
          },
          {
            "number": 8,
            "label": "Glazed enclosure entrance",
            "category": "opening",
            "position_hint": "southwest arc of enclosure 7, facing doorway 6",
            "base_layer_decision": "base_opening",
            "render_role": "not_applicable",
            "top_down_legibility": "not_applicable"
          },
          {
            "number": 9,
            "label": "Enclosure door switch",
            "category": "prop",
            "position_hint": "enclosure wall immediately beside entrance 8",
            "base_layer_decision": "base_persistent_fixture",
            "render_role": "not_applicable",
            "top_down_legibility": "not_applicable"
          },
          {
            "number": 10,
            "label": "Stainless examination bed",
            "category": "furniture",
            "position_hint": "center of enclosure 7, long axis north-south",
            "base_layer_decision": "base_persistent_furniture",
            "render_role": "not_applicable",
            "top_down_legibility": "not_applicable"
          },
          {
            "number": 11,
            "label": "West scanning arm assembly",
            "category": "prop",
            "position_hint": "inside enclosure 7, west of bed 10",
            "base_layer_decision": "base_persistent_fixture",
            "render_role": "not_applicable",
            "top_down_legibility": "not_applicable"
          },
          {
            "number": 12,
            "label": "East scanning arm assembly",
            "category": "prop",
            "position_hint": "inside enclosure 7, east of bed 10",
            "base_layer_decision": "base_persistent_fixture",
            "render_role": "not_applicable",
            "top_down_legibility": "not_applicable"
          },
          {
            "number": 13,
            "label": "North computer console bank",
            "category": "furniture",
            "position_hint": "north wall of laboratory 5, outside enclosure 7",
            "base_layer_decision": "base_persistent_fixture",
            "render_role": "not_applicable",
            "top_down_legibility": "not_applicable"
          },
          {
            "number": 14,
            "label": "East computer console bank",
            "category": "furniture",
            "position_hint": "east wall of laboratory 5, outside enclosure 7",
            "base_layer_decision": "base_persistent_fixture",
            "render_role": "not_applicable",
            "top_down_legibility": "not_applicable"
          },
          {
            "number": 15,
            "label": "Supervisor console",
            "category": "furniture",
            "position_hint": "southwest of enclosure 7, beside but not across the entry route",
            "base_layer_decision": "base_persistent_fixture",
            "render_role": "not_applicable",
            "top_down_legibility": "not_applicable"
          },
          {
            "number": 16,
            "label": "Console microphone",
            "category": "prop",
            "position_hint": "integrated into supervisor console 15",
            "base_layer_decision": "base_persistent_fixture",
            "render_role": "not_applicable",
            "top_down_legibility": "not_applicable"
          },
          {
            "number": 18,
            "label": "South tropical planting bed",
            "category": "prop",
            "position_hint": "southwest perimeter of hall 1, clear of entrance 3",
            "base_layer_decision": "base_persistent_fixture",
            "render_role": "not_applicable",
            "top_down_legibility": "not_applicable"
          }
        ],
        "transient_markers_to_describe": [
          {
            "number": 21,
            "label": "Failed test black smoke",
            "category": "prop",
            "position_hint": "at the subject's chest-ring position above bed 10 inside enclosure 7; failure moment only",
            "base_layer_decision": "state_overlay_plot_cue",
            "render_role": "not_applicable",
            "top_down_legibility": "not_applicable"
          },
          {
            "number": 22,
            "label": "Experiment error display",
            "category": "prop",
            "position_hint": "within active research monitor surfaces at consoles 13 through 15; failure moment only",
            "base_layer_decision": "state_overlay_plot_cue",
            "render_role": "not_applicable",
            "top_down_legibility": "not_applicable"
          },
          {
            "number": 23,
            "label": "Attached experimental leads",
            "category": "prop",
            "position_hint": "temporary connections between the test subject at bed 10 and nearby test equipment during wired testing",
            "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,
          5,
          7
        ],
        "dominant_target_unit_marker_number": null,
        "clean_background_expected": false,
        "diagnostics": [
          "multiple base_structural_unit markers in use_numbered_elements ([1, 5, 7]); dominant_target_unit_marker_number left empty (W19B-1 lock — no lexical disambiguation)"
        ]
      },
      "L269B03": {
        "bg_id": "L269B03",
        "fp_id": "fp_l269_observation_lab",
        "use_numbered_elements": [
          1,
          2,
          3,
          5,
          6,
          7,
          9,
          10,
          11,
          12,
          14,
          15,
          16,
          17,
          18,
          19
        ],
        "ignore_numbered_elements": [
          20,
          21
        ],
        "base_markers_to_reference": [
          {
            "number": 1,
            "label": "Glass experiment enclosure",
            "category": "area",
            "position_hint": "Central circular unit, slightly north of the laboratory center; includes its continuous glass boundary",
            "base_layer_decision": "base_structural_unit",
            "render_role": "not_applicable",
            "top_down_legibility": "not_applicable"
          },
          {
            "number": 2,
            "label": "Observation circulation",
            "category": "area",
            "position_hint": "Continuous aisle surrounding number 1, between the glass boundary and perimeter workbenches",
            "base_layer_decision": "base_structural_unit",
            "render_role": "not_applicable",
            "top_down_legibility": "not_applicable"
          },
          {
            "number": 3,
            "label": "Console service zone",
            "category": "area",
            "position_hint": "Connected U-shaped strip along the west, north, and east laboratory perimeter",
            "base_layer_decision": "base_structural_unit",
            "render_role": "not_applicable",
            "top_down_legibility": "not_applicable"
          },
          {
            "number": 5,
            "label": "Steel procedure bed",
            "category": "furniture",
            "position_hint": "Center of number 1, long axis north-south, head at north",
            "base_layer_decision": "base_persistent_furniture",
            "render_role": "not_applicable",
            "top_down_legibility": "not_applicable"
          },
          {
            "number": 6,
            "label": "West robotic arm station",
            "category": "prop",
            "position_hint": "Inside the enclosure west of number 5, outside the south access route",
            "base_layer_decision": "base_persistent_fixture",
            "render_role": "not_applicable",
            "top_down_legibility": "not_applicable"
          },
          {
            "number": 7,
            "label": "East robotic arm station",
            "category": "prop",
            "position_hint": "Inside the enclosure east of number 5, outside the south access route",
            "base_layer_decision": "base_persistent_fixture",
            "render_role": "not_applicable",
            "top_down_legibility": "not_applicable"
          },
          {
            "number": 9,
            "label": "North computer workbench bank",
            "category": "furniture",
            "position_hint": "North perimeter within number 3, facing south toward the enclosure",
            "base_layer_decision": "base_persistent_furniture",
            "render_role": "not_applicable",
            "top_down_legibility": "not_applicable"
          },
          {
            "number": 10,
            "label": "East computer workbench bank",
            "category": "furniture",
            "position_hint": "East perimeter within number 3, facing inward toward the enclosure",
            "base_layer_decision": "base_persistent_furniture",
            "render_role": "not_applicable",
            "top_down_legibility": "not_applicable"
          },
          {
            "number": 11,
            "label": "Automatic glass access door",
            "category": "opening",
            "position_hint": "South edge of the circular glass boundary, aligned with the foot of number 5",
            "base_layer_decision": "base_opening",
            "render_role": "not_applicable",
            "top_down_legibility": "not_applicable"
          },
          {
            "number": 12,
            "label": "Glass door operating switch",
            "category": "prop",
            "position_hint": "Fixed to the enclosure boundary immediately east of number 11, accessible from inside",
            "base_layer_decision": "base_persistent_fixture",
            "render_role": "not_applicable",
            "top_down_legibility": "not_applicable"
          },
          {
            "number": 14,
            "label": "Observation intercom speaker",
            "category": "prop",
            "position_hint": "North segment of the glass boundary, facing outward into number 2",
            "base_layer_decision": "base_persistent_fixture",
            "render_role": "not_applicable",
            "top_down_legibility": "not_applicable"
          },
          {
            "number": 15,
            "label": "Console microphone",
            "category": "prop",
            "position_hint": "On the inward-facing edge of number 9, opposite number 14",
            "base_layer_decision": "base_persistent_fixture",
            "render_role": "not_applicable",
            "top_down_legibility": "not_applicable"
          },
          {
            "number": 16,
            "label": "Restraint mounting assembly",
            "category": "prop",
            "position_hint": "Integrated along the sides of number 5; one marker covers the connected bed restraint fittings",
            "base_layer_decision": "base_persistent_fixture",
            "render_role": "not_applicable",
            "top_down_legibility": "not_applicable"
          },
          {
            "number": 17,
            "label": "Bedside chair",
            "category": "furniture",
            "position_hint": "Inside the enclosure southwest of number 5, clear of number 11 and the robotic arm station",
            "base_layer_decision": "base_persistent_furniture",
            "render_role": "not_applicable",
            "top_down_legibility": "not_applicable"
          },
          {
            "number": 18,
            "label": "Fixed cable connection panel",
            "category": "prop",
            "position_hint": "Beside the north head end of number 5, inside the enclosure",
            "base_layer_decision": "base_persistent_fixture",
            "render_role": "not_applicable",
            "top_down_legibility": "not_applicable"
          }
        ],
        "transient_markers_to_describe": [
          {
            "number": 19,
            "label": "Attached monitoring leads",
            "category": "prop",
            "position_hint": "Temporary connections between number 18 and the occupied procedure bed; attachment and removal follow shot continuity",
            "base_layer_decision": "state_overlay_transient_object",
            "render_role": "not_applicable",
            "top_down_legibility": "not_applicable"
          }
        ],
        "ignored_state_overlay_markers": [
          {
            "number": 20,
            "label": "Morning restraint configuration",
            "category": "prop",
            "position_hint": "Thick restraint straps and engaged locks at number 16 on number 5; hand release is handled per shot rather than changing the plan",
            "base_layer_decision": "state_overlay_transient_object",
            "render_role": "not_applicable",
            "top_down_legibility": "not_applicable"
          },
          {
            "number": 21,
            "label": "Red alarm illumination",
            "category": "area",
            "position_hint": "Temporary red warning illumination across the existing laboratory and observation glass, without physical damage",
            "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)"
        ]
      },
      "L269B01": {
        "bg_id": "L269B01",
        "fp_id": "fp_l269_observation_lab",
        "use_numbered_elements": [
          1,
          2,
          3,
          5,
          6,
          7,
          8,
          9,
          11,
          12,
          14,
          15,
          16,
          17,
          18,
          19,
          20
        ],
        "ignore_numbered_elements": [
          21
        ],
        "base_markers_to_reference": [
          {
            "number": 1,
            "label": "Glass experiment enclosure",
            "category": "area",
            "position_hint": "Central circular unit, slightly north of the laboratory center; includes its continuous glass boundary",
            "base_layer_decision": "base_structural_unit",
            "render_role": "not_applicable",
            "top_down_legibility": "not_applicable"
          },
          {
            "number": 2,
            "label": "Observation circulation",
            "category": "area",
            "position_hint": "Continuous aisle surrounding number 1, between the glass boundary and perimeter workbenches",
            "base_layer_decision": "base_structural_unit",
            "render_role": "not_applicable",
            "top_down_legibility": "not_applicable"
          },
          {
            "number": 3,
            "label": "Console service zone",
            "category": "area",
            "position_hint": "Connected U-shaped strip along the west, north, and east laboratory perimeter",
            "base_layer_decision": "base_structural_unit",
            "render_role": "not_applicable",
            "top_down_legibility": "not_applicable"
          },
          {
            "number": 5,
            "label": "Steel procedure bed",
            "category": "furniture",
            "position_hint": "Center of number 1, long axis north-south, head at north",
            "base_layer_decision": "base_persistent_furniture",
            "render_role": "not_applicable",
            "top_down_legibility": "not_applicable"
          },
          {
            "number": 6,
            "label": "West robotic arm station",
            "category": "prop",
            "position_hint": "Inside the enclosure west of number 5, outside the south access route",
            "base_layer_decision": "base_persistent_fixture",
            "render_role": "not_applicable",
            "top_down_legibility": "not_applicable"
          },
          {
            "number": 7,
            "label": "East robotic arm station",
            "category": "prop",
            "position_hint": "Inside the enclosure east of number 5, outside the south access route",
            "base_layer_decision": "base_persistent_fixture",
            "render_role": "not_applicable",
            "top_down_legibility": "not_applicable"
          },
          {
            "number": 8,
            "label": "West computer workbench bank",
            "category": "furniture",
            "position_hint": "West perimeter within number 3, facing inward toward the glass enclosure",
            "base_layer_decision": "base_persistent_furniture",
            "render_role": "not_applicable",
            "top_down_legibility": "not_applicable"
          },
          {
            "number": 9,
            "label": "North computer workbench bank",
            "category": "furniture",
            "position_hint": "North perimeter within number 3, facing south toward the enclosure",
            "base_layer_decision": "base_persistent_furniture",
            "render_role": "not_applicable",
            "top_down_legibility": "not_applicable"
          },
          {
            "number": 11,
            "label": "Automatic glass access door",
            "category": "opening",
            "position_hint": "South edge of the circular glass boundary, aligned with the foot of number 5",
            "base_layer_decision": "base_opening",
            "render_role": "not_applicable",
            "top_down_legibility": "not_applicable"
          },
          {
            "number": 12,
            "label": "Glass door operating switch",
            "category": "prop",
            "position_hint": "Fixed to the enclosure boundary immediately east of number 11, accessible from inside",
            "base_layer_decision": "base_persistent_fixture",
            "render_role": "not_applicable",
            "top_down_legibility": "not_applicable"
          },
          {
            "number": 14,
            "label": "Observation intercom speaker",
            "category": "prop",
            "position_hint": "North segment of the glass boundary, facing outward into number 2",
            "base_layer_decision": "base_persistent_fixture",
            "render_role": "not_applicable",
            "top_down_legibility": "not_applicable"
          },
          {
            "number": 15,
            "label": "Console microphone",
            "category": "prop",
            "position_hint": "On the inward-facing edge of number 9, opposite number 14",
            "base_layer_decision": "base_persistent_fixture",
            "render_role": "not_applicable",
            "top_down_legibility": "not_applicable"
          },
          {
            "number": 16,
            "label": "Restraint mounting assembly",
            "category": "prop",
            "position_hint": "Integrated along the sides of number 5; one marker covers the connected bed restraint fittings",
            "base_layer_decision": "base_persistent_fixture",
            "render_role": "not_applicable",
            "top_down_legibility": "not_applicable"
          },
          {
            "number": 17,
            "label": "Bedside chair",
            "category": "furniture",
            "position_hint": "Inside the enclosure southwest of number 5, clear of number 11 and the robotic arm station",
            "base_layer_decision": "base_persistent_furniture",
            "render_role": "not_applicable",
            "top_down_legibility": "not_applicable"
          },
          {
            "number": 18,
            "label": "Fixed cable connection panel",
            "category": "prop",
            "position_hint": "Beside the north head end of number 5, inside the enclosure",
            "base_layer_decision": "base_persistent_fixture",
            "render_role": "not_applicable",
            "top_down_legibility": "not_applicable"
          }
        ],
        "transient_markers_to_describe": [
          {
            "number": 19,
            "label": "Attached monitoring leads",
            "category": "prop",
            "position_hint": "Temporary connections between number 18 and the occupied procedure bed; attachment and removal follow shot continuity",
            "base_layer_decision": "state_overlay_transient_object",
            "render_role": "not_applicable",
            "top_down_legibility": "not_applicable"
          },
          {
            "number": 20,
            "label": "Morning restraint configuration",
            "category": "prop",
            "position_hint": "Thick restraint straps and engaged locks at number 16 on number 5; hand release is handled per shot rather than changing the plan",
            "base_layer_decision": "state_overlay_transient_object",
            "render_role": "not_applicable",
            "top_down_legibility": "not_applicable"
          }
        ],
        "ignored_state_overlay_markers": [
          {
            "number": 21,
            "label": "Red alarm illumination",
            "category": "area",
            "position_hint": "Temporary red warning illumination across the existing laboratory and observation glass, without physical damage",
            "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)"
        ]
      },
      "L269B02": {
        "bg_id": "L269B02",
        "fp_id": "fp_l269_observation_lab",
        "use_numbered_elements": [
          1,
          2,
          3,
          5,
          6,
          7,
          8,
          9,
          11,
          12,
          14,
          15,
          16,
          17,
          18,
          19,
          20,
          21
        ],
        "ignore_numbered_elements": [],
        "base_markers_to_reference": [
          {
            "number": 1,
            "label": "Glass experiment enclosure",
            "category": "area",
            "position_hint": "Central circular unit, slightly north of the laboratory center; includes its continuous glass boundary",
            "base_layer_decision": "base_structural_unit",
            "render_role": "not_applicable",
            "top_down_legibility": "not_applicable"
          },
          {
            "number": 2,
            "label": "Observation circulation",
            "category": "area",
            "position_hint": "Continuous aisle surrounding number 1, between the glass boundary and perimeter workbenches",
            "base_layer_decision": "base_structural_unit",
            "render_role": "not_applicable",
            "top_down_legibility": "not_applicable"
          },
          {
            "number": 3,
            "label": "Console service zone",
            "category": "area",
            "position_hint": "Connected U-shaped strip along the west, north, and east laboratory perimeter",
            "base_layer_decision": "base_structural_unit",
            "render_role": "not_applicable",
            "top_down_legibility": "not_applicable"
          },
          {
            "number": 5,
            "label": "Steel procedure bed",
            "category": "furniture",
            "position_hint": "Center of number 1, long axis north-south, head at north",
            "base_layer_decision": "base_persistent_furniture",
            "render_role": "not_applicable",
            "top_down_legibility": "not_applicable"
          },
          {
            "number": 6,
            "label": "West robotic arm station",
            "category": "prop",
            "position_hint": "Inside the enclosure west of number 5, outside the south access route",
            "base_layer_decision": "base_persistent_fixture",
            "render_role": "not_applicable",
            "top_down_legibility": "not_applicable"
          },
          {
            "number": 7,
            "label": "East robotic arm station",
            "category": "prop",
            "position_hint": "Inside the enclosure east of number 5, outside the south access route",
            "base_layer_decision": "base_persistent_fixture",
            "render_role": "not_applicable",
            "top_down_legibility": "not_applicable"
          },
          {
            "number": 8,
            "label": "West computer workbench bank",
            "category": "furniture",
            "position_hint": "West perimeter within number 3, facing inward toward the glass enclosure",
            "base_layer_decision": "base_persistent_furniture",
            "render_role": "not_applicable",
            "top_down_legibility": "not_applicable"
          },
          {
            "number": 9,
            "label": "North computer workbench bank",
            "category": "furniture",
            "position_hint": "North perimeter within number 3, facing south toward the enclosure",
            "base_layer_decision": "base_persistent_furniture",
            "render_role": "not_applicable",
            "top_down_legibility": "not_applicable"
          },
          {
            "number": 11,
            "label": "Automatic glass access door",
            "category": "opening",
            "position_hint": "South edge of the circular glass boundary, aligned with the foot of number 5",
            "base_layer_decision": "base_opening",
            "render_role": "not_applicable",
            "top_down_legibility": "not_applicable"
          },
          {
            "number": 12,
            "label": "Glass door operating switch",
            "category": "prop",
            "position_hint": "Fixed to the enclosure boundary immediately east of number 11, accessible from inside",
            "base_layer_decision": "base_persistent_fixture",
            "render_role": "not_applicable",
            "top_down_legibility": "not_applicable"
          },
          {
            "number": 14,
            "label": "Observation intercom speaker",
            "category": "prop",
            "position_hint": "North segment of the glass boundary, facing outward into number 2",
            "base_layer_decision": "base_persistent_fixture",
            "render_role": "not_applicable",
            "top_down_legibility": "not_applicable"
          },
          {
            "number": 15,
            "label": "Console microphone",
            "category": "prop",
            "position_hint": "On the inward-facing edge of number 9, opposite number 14",
            "base_layer_decision": "base_persistent_fixture",
            "render_role": "not_applicable",
            "top_down_legibility": "not_applicable"
          },
          {
            "number": 16,
            "label": "Restraint mounting assembly",
            "category": "prop",
            "position_hint": "Integrated along the sides of number 5; one marker covers the connected bed restraint fittings",
            "base_layer_decision": "base_persistent_fixture",
            "render_role": "not_applicable",
            "top_down_legibility": "not_applicable"
          },
          {
            "number": 17,
            "label": "Bedside chair",
            "category": "furniture",
            "position_hint": "Inside the enclosure southwest of number 5, clear of number 11 and the robotic arm station",
            "base_layer_decision": "base_persistent_furniture",
            "render_role": "not_applicable",
            "top_down_legibility": "not_applicable"
          },
          {
            "number": 18,
            "label": "Fixed cable connection panel",
            "category": "prop",
            "position_hint": "Beside the north head end of number 5, inside the enclosure",
            "base_layer_decision": "base_persistent_fixture",
            "render_role": "not_applicable",
            "top_down_legibility": "not_applicable"
          }
        ],
        "transient_markers_to_describe": [
          {
            "number": 19,
            "label": "Attached monitoring leads",
            "category": "prop",
            "position_hint": "Temporary connections between number 18 and the occupied procedure bed; attachment and removal follow shot continuity",
            "base_layer_decision": "state_overlay_transient_object",
            "render_role": "not_applicable",
            "top_down_legibility": "not_applicable"
          },
          {
            "number": 20,
            "label": "Morning restraint configuration",
            "category": "prop",
            "position_hint": "Thick restraint straps and engaged locks at number 16 on number 5; hand release is handled per shot rather than changing the plan",
            "base_layer_decision": "state_overlay_transient_object",
            "render_role": "not_applicable",
            "top_down_legibility": "not_applicable"
          },
          {
            "number": 21,
            "label": "Red alarm illumination",
            "category": "area",
            "position_hint": "Temporary red warning illumination across the existing laboratory and observation glass, without physical damage",
            "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)"
        ]
      },
      "L270B01": {
        "bg_id": "L270B01",
        "fp_id": "fp_l270_director_suite",
        "use_numbered_elements": [
          1,
          2,
          3,
          4,
          5,
          6,
          7,
          8,
          9,
          10,
          11
        ],
        "ignore_numbered_elements": [],
        "base_markers_to_reference": [
          {
            "number": 1,
            "label": "Central shared hall",
            "category": "area",
            "position_hint": "middle of suite, between entrance threshold and northern office zone",
            "base_layer_decision": "base_structural_unit",
            "render_role": "not_applicable",
            "top_down_legibility": "not_applicable"
          },
          {
            "number": 2,
            "label": "Private office zone",
            "category": "area",
            "position_hint": "northern portion of suite, open to central hall",
            "base_layer_decision": "base_structural_unit",
            "render_role": "not_applicable",
            "top_down_legibility": "not_applicable"
          },
          {
            "number": 3,
            "label": "Entrance threshold",
            "category": "area",
            "position_hint": "shallow southern portion of suite immediately inside entry",
            "base_layer_decision": "base_structural_unit",
            "render_role": "not_applicable",
            "top_down_legibility": "not_applicable"
          },
          {
            "number": 4,
            "label": "Research center entry",
            "category": "opening",
            "position_hint": "center of south wall, opening inward toward east",
            "base_layer_decision": "base_opening",
            "render_role": "not_applicable",
            "top_down_legibility": "not_applicable"
          },
          {
            "number": 5,
            "label": "Director desk",
            "category": "furniture",
            "position_hint": "north-central office zone, visitor side facing south",
            "base_layer_decision": "base_persistent_furniture",
            "render_role": "not_applicable",
            "top_down_legibility": "not_applicable"
          },
          {
            "number": 6,
            "label": "Director chair",
            "category": "furniture",
            "position_hint": "north of desk, between desk and north wall",
            "base_layer_decision": "base_persistent_furniture",
            "render_role": "not_applicable",
            "top_down_legibility": "not_applicable"
          },
          {
            "number": 7,
            "label": "Framed family photo",
            "category": "prop",
            "position_hint": "northeast corner of desktop",
            "base_layer_decision": "base_persistent_furniture",
            "render_role": "not_applicable",
            "top_down_legibility": "not_applicable"
          },
          {
            "number": 8,
            "label": "Older piano",
            "category": "furniture",
            "position_hint": "slightly west of central hall center, keyboard facing south",
            "base_layer_decision": "base_persistent_furniture",
            "render_role": "not_applicable",
            "top_down_legibility": "not_applicable"
          },
          {
            "number": 9,
            "label": "West structural column",
            "category": "area",
            "position_hint": "southwest of piano, clear of bench and entrance approach",
            "base_layer_decision": "base_structural_unit",
            "render_role": "not_applicable",
            "top_down_legibility": "not_applicable"
          },
          {
            "number": 10,
            "label": "East structural column",
            "category": "area",
            "position_hint": "east-central hall, east of the clear entrance-to-desk approach",
            "base_layer_decision": "base_structural_unit",
            "render_role": "not_applicable",
            "top_down_legibility": "not_applicable"
          },
          {
            "number": 11,
            "label": "Piano bench",
            "category": "furniture",
            "position_hint": "immediately south of piano keyboard",
            "base_layer_decision": "base_persistent_furniture",
            "render_role": "not_applicable",
            "top_down_legibility": "not_applicable"
          }
        ],
        "transient_markers_to_describe": [],
        "ignored_state_overlay_markers": [],
        "target_unit_marker_numbers": [
          1,
          2,
          3,
          9,
          10
        ],
        "dominant_target_unit_marker_number": null,
        "clean_background_expected": true,
        "diagnostics": [
          "multiple base_structural_unit markers in use_numbered_elements ([1, 2, 3, 9, 10]); dominant_target_unit_marker_number left empty (W19B-1 lock — no lexical disambiguation)"
        ]
      },
      "L278B01": {
        "bg_id": "L278B01",
        "fp_id": "fp_l278_roof_antenna_deck",
        "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": "Roof deck",
            "category": "area",
            "position_hint": "entire rectangular rooftop within the perimeter parapet",
            "base_layer_decision": "base_structural_unit",
            "render_role": "not_applicable",
            "top_down_legibility": "not_applicable"
          },
          {
            "number": 2,
            "label": "Roof lawn",
            "category": "area",
            "position_hint": "western and central roof, north of the southern circulation strip",
            "base_layer_decision": "base_structural_unit",
            "render_role": "not_applicable",
            "top_down_legibility": "not_applicable"
          },
          {
            "number": 3,
            "label": "Helicopter touchdown surface",
            "category": "area",
            "position_hint": "eastern roof, adjoining the lawn without an intervening wall",
            "base_layer_decision": "base_structural_unit",
            "render_role": "not_applicable",
            "top_down_legibility": "not_applicable"
          },
          {
            "number": 4,
            "label": "Roof circulation strip",
            "category": "area",
            "position_hint": "along the southern roof, linking access enclosure, lawn, and touchdown surface",
            "base_layer_decision": "base_structural_unit",
            "render_role": "not_applicable",
            "top_down_legibility": "not_applicable"
          },
          {
            "number": 5,
            "label": "Roof access and stairwell",
            "category": "area",
            "position_hint": "southwest corner of the roof",
            "base_layer_decision": "base_structural_unit",
            "render_role": "not_applicable",
            "top_down_legibility": "not_applicable"
          },
          {
            "number": 6,
            "label": "Roof access door",
            "category": "opening",
            "position_hint": "east wall of number 5, opening onto number 4",
            "base_layer_decision": "base_opening",
            "render_role": "not_applicable",
            "top_down_legibility": "not_applicable"
          },
          {
            "number": 7,
            "label": "Large antenna",
            "category": "prop",
            "position_hint": "north-central lawn, west of the touchdown surface",
            "base_layer_decision": "base_persistent_fixture",
            "render_role": "not_applicable",
            "top_down_legibility": "not_applicable"
          },
          {
            "number": 8,
            "label": "All-direction speaker assembly",
            "category": "prop",
            "position_hint": "on the lawn immediately south of number 7",
            "base_layer_decision": "base_persistent_fixture",
            "render_role": "not_applicable",
            "top_down_legibility": "not_applicable"
          },
          {
            "number": 9,
            "label": "Perimeter parapet",
            "category": "area",
            "position_hint": "continuous narrow boundary around the roof deck",
            "base_layer_decision": "base_structural_unit",
            "render_role": "not_applicable",
            "top_down_legibility": "not_applicable"
          }
        ],
        "transient_markers_to_describe": [
          {
            "number": 10,
            "label": "Bullet impact damage",
            "category": "prop",
            "position_hint": "across the central lawn and its boundary with the touchdown surface",
            "base_layer_decision": "state_overlay_plot_cue",
            "render_role": "not_applicable",
            "top_down_legibility": "not_applicable"
          },
          {
            "number": 11,
            "label": "Landed armed helicopter",
            "category": "prop",
            "position_hint": "on number 3, clear of the antenna and speaker assembly",
            "base_layer_decision": "state_overlay_transient_object",
            "render_role": "not_applicable",
            "top_down_legibility": "not_applicable"
          },
          {
            "number": 12,
            "label": "Vertical white energy column",
            "category": "prop",
            "position_hint": "originating on the east-central lawn, southeast of number 8 and west of number 3",
            "base_layer_decision": "state_overlay_plot_cue",
            "render_role": "not_applicable",
            "top_down_legibility": "not_applicable"
          }
        ],
        "ignored_state_overlay_markers": [
          {
            "number": 13,
            "label": "Scorched roof surface",
            "category": "prop",
            "position_hint": "east-central lawn around the former energy-column origin",
            "base_layer_decision": "state_overlay_plot_cue",
            "render_role": "not_applicable",
            "top_down_legibility": "not_applicable"
          },
          {
            "number": 14,
            "label": "Scattered battle debris",
            "category": "prop",
            "position_hint": "around the east-central lawn and adjacent touchdown-surface edge",
            "base_layer_decision": "state_overlay_transient_object",
            "render_role": "not_applicable",
            "top_down_legibility": "not_applicable"
          },
          {
            "number": 15,
            "label": "Oxidized robot torso remains",
            "category": "prop",
            "position_hint": "east-central lawn at the former energy-column origin",
            "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,
          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, 5, 9]); dominant_target_unit_marker_number left empty (W19B-1 lock — no lexical disambiguation)"
        ]
      },
      "L278B02": {
        "bg_id": "L278B02",
        "fp_id": "fp_l278_roof_antenna_deck",
        "use_numbered_elements": [
          1,
          2,
          3,
          7,
          8,
          9,
          10,
          13,
          14,
          15
        ],
        "ignore_numbered_elements": [
          11,
          12
        ],
        "base_markers_to_reference": [
          {
            "number": 1,
            "label": "Roof deck",
            "category": "area",
            "position_hint": "entire rectangular rooftop within the perimeter parapet",
            "base_layer_decision": "base_structural_unit",
            "render_role": "not_applicable",
            "top_down_legibility": "not_applicable"
          },
          {
            "number": 2,
            "label": "Roof lawn",
            "category": "area",
            "position_hint": "western and central roof, north of the southern circulation strip",
            "base_layer_decision": "base_structural_unit",
            "render_role": "not_applicable",
            "top_down_legibility": "not_applicable"
          },
          {
            "number": 3,
            "label": "Helicopter touchdown surface",
            "category": "area",
            "position_hint": "eastern roof, adjoining the lawn without an intervening wall",
            "base_layer_decision": "base_structural_unit",
            "render_role": "not_applicable",
            "top_down_legibility": "not_applicable"
          },
          {
            "number": 7,
            "label": "Large antenna",
            "category": "prop",
            "position_hint": "north-central lawn, west of the touchdown surface",
            "base_layer_decision": "base_persistent_fixture",
            "render_role": "not_applicable",
            "top_down_legibility": "not_applicable"
          },
          {
            "number": 8,
            "label": "All-direction speaker assembly",
            "category": "prop",
            "position_hint": "on the lawn immediately south of number 7",
            "base_layer_decision": "base_persistent_fixture",
            "render_role": "not_applicable",
            "top_down_legibility": "not_applicable"
          },
          {
            "number": 9,
            "label": "Perimeter parapet",
            "category": "area",
            "position_hint": "continuous narrow boundary around the roof deck",
            "base_layer_decision": "base_structural_unit",
            "render_role": "not_applicable",
            "top_down_legibility": "not_applicable"
          }
        ],
        "transient_markers_to_describe": [
          {
            "number": 10,
            "label": "Bullet impact damage",
            "category": "prop",
            "position_hint": "across the central lawn and its boundary with the touchdown surface",
            "base_layer_decision": "state_overlay_plot_cue",
            "render_role": "not_applicable",
            "top_down_legibility": "not_applicable"
          },
          {
            "number": 13,
            "label": "Scorched roof surface",
            "category": "prop",
            "position_hint": "east-central lawn around the former energy-column origin",
            "base_layer_decision": "state_overlay_plot_cue",
            "render_role": "not_applicable",
            "top_down_legibility": "not_applicable"
          },
          {
            "number": 14,
            "label": "Scattered battle debris",
            "category": "prop",
            "position_hint": "around the east-central lawn and adjacent touchdown-surface edge",
            "base_layer_decision": "state_overlay_transient_object",
            "render_role": "not_applicable",
            "top_down_legibility": "not_applicable"
          },
          {
            "number": 15,
            "label": "Oxidized robot torso remains",
            "category": "prop",
            "position_hint": "east-central lawn at the former energy-column origin",
            "base_layer_decision": "state_overlay_transient_object",
            "render_role": "not_applicable",
            "top_down_legibility": "not_applicable"
          }
        ],
        "ignored_state_overlay_markers": [
          {
            "number": 11,
            "label": "Landed armed helicopter",
            "category": "prop",
            "position_hint": "on number 3, clear of the antenna and speaker assembly",
            "base_layer_decision": "state_overlay_transient_object",
            "render_role": "not_applicable",
            "top_down_legibility": "not_applicable"
          },
          {
            "number": 12,
            "label": "Vertical white energy column",
            "category": "prop",
            "position_hint": "originating on the east-central lawn, southeast of number 8 and west of number 3",
            "base_layer_decision": "state_overlay_plot_cue",
            "render_role": "not_applicable",
            "top_down_legibility": "not_applicable"
          }
        ],
        "target_unit_marker_numbers": [
          1,
          2,
          3,
          9
        ],
        "dominant_target_unit_marker_number": null,
        "clean_background_expected": false,
        "diagnostics": [
          "multiple base_structural_unit markers in use_numbered_elements ([1, 2, 3, 9]); dominant_target_unit_marker_number left empty (W19B-1 lock — no lexical disambiguation)"
        ]
      },
      "L282B02": {
        "bg_id": "L282B02",
        "fp_id": "fp_l282_restoration_lab",
        "use_numbered_elements": [
          1,
          3,
          4,
          5,
          7,
          8,
          9,
          10,
          11,
          12,
          13,
          14,
          16
        ],
        "ignore_numbered_elements": [
          15,
          17
        ],
        "base_markers_to_reference": [
          {
            "number": 1,
            "label": "Laboratory",
            "category": "area",
            "position_hint": "entire rectangular room; marker in west circulation aisle",
            "base_layer_decision": "base_structural_unit",
            "render_role": "not_applicable",
            "top_down_legibility": "not_applicable"
          },
          {
            "number": 3,
            "label": "Restoration work area",
            "category": "area",
            "position_hint": "central-north floor surrounding the restoration table",
            "base_layer_decision": "base_structural_unit",
            "render_role": "not_applicable",
            "top_down_legibility": "not_applicable"
          },
          {
            "number": 4,
            "label": "Rear seating area",
            "category": "area",
            "position_hint": "south-central floor, behind the table relative to the monitor",
            "base_layer_decision": "base_structural_unit",
            "render_role": "not_applicable",
            "top_down_legibility": "not_applicable"
          },
          {
            "number": 5,
            "label": "Presentation area",
            "category": "area",
            "position_hint": "east-central open floor, east of table and northeast of seating",
            "base_layer_decision": "base_structural_unit",
            "render_role": "not_applicable",
            "top_down_legibility": "not_applicable"
          },
          {
            "number": 7,
            "label": "Restoration table",
            "category": "furniture",
            "position_hint": "central-north work area, long axis east-west, south of monitor",
            "base_layer_decision": "base_persistent_furniture",
            "render_role": "not_applicable",
            "top_down_legibility": "not_applicable"
          },
          {
            "number": 8,
            "label": "West rear chair",
            "category": "furniture",
            "position_hint": "west side of rear seating area, facing north",
            "base_layer_decision": "base_persistent_furniture",
            "render_role": "not_applicable",
            "top_down_legibility": "not_applicable"
          },
          {
            "number": 9,
            "label": "East rear chair",
            "category": "furniture",
            "position_hint": "beside west chair in rear seating area, facing north",
            "base_layer_decision": "base_persistent_furniture",
            "render_role": "not_applicable",
            "top_down_legibility": "not_applicable"
          },
          {
            "number": 10,
            "label": "Large status monitor",
            "category": "prop",
            "position_hint": "north wall, centered behind restoration table",
            "base_layer_decision": "base_persistent_fixture",
            "render_role": "not_applicable",
            "top_down_legibility": "not_applicable"
          },
          {
            "number": 11,
            "label": "Presentation control button",
            "category": "prop",
            "position_hint": "integrated into southwest edge of restoration table, reachable from seating side",
            "base_layer_decision": "base_persistent_fixture",
            "render_role": "not_applicable",
            "top_down_legibility": "not_applicable"
          }
        ],
        "transient_markers_to_describe": [
          {
            "number": 12,
            "label": "Disassembled robot components",
            "category": "prop",
            "position_hint": "on number 7 during the chip handover; never drawn on base plan",
            "base_layer_decision": "state_overlay_transient_object",
            "render_role": "not_applicable",
            "top_down_legibility": "not_applicable"
          },
          {
            "number": 13,
            "label": "Reassembled physical robot",
            "category": "prop",
            "position_hint": "lying on number 7 in the final restoration view, replacing the loose-component arrangement",
            "base_layer_decision": "state_overlay_transient_object",
            "render_role": "not_applicable",
            "top_down_legibility": "not_applicable"
          },
          {
            "number": 14,
            "label": "Memory chip",
            "category": "prop",
            "position_hint": "handover beside numbers 8 and 9; not a permanent tabletop object",
            "base_layer_decision": "state_overlay_transient_object",
            "render_role": "not_applicable",
            "top_down_legibility": "not_applicable"
          },
          {
            "number": 16,
            "label": "Worldwide energy supply display",
            "category": "prop",
            "position_hint": "confined to the screen surface of number 10 during the non-projection views",
            "base_layer_decision": "state_overlay_plot_cue",
            "render_role": "not_applicable",
            "top_down_legibility": "not_applicable"
          }
        ],
        "ignored_state_overlay_markers": [
          {
            "number": 15,
            "label": "Projected landscape and giant robot",
            "category": "prop",
            "position_hint": "projected into the air over number 5; entirely separate from the physical body on number 7",
            "base_layer_decision": "state_overlay_plot_cue",
            "render_role": "not_applicable",
            "top_down_legibility": "not_applicable"
          },
          {
            "number": 17,
            "label": "Island landscape display",
            "category": "prop",
            "position_hint": "confined to number 10 during the hologram presentation, replacing number 16",
            "base_layer_decision": "state_overlay_plot_cue",
            "render_role": "not_applicable",
            "top_down_legibility": "not_applicable"
          }
        ],
        "target_unit_marker_numbers": [
          1,
          3,
          4,
          5
        ],
        "dominant_target_unit_marker_number": null,
        "clean_background_expected": false,
        "diagnostics": [
          "multiple base_structural_unit markers in use_numbered_elements ([1, 3, 4, 5]); dominant_target_unit_marker_number left empty (W19B-1 lock — no lexical disambiguation)"
        ]
      },
      "L282B01": {
        "bg_id": "L282B01",
        "fp_id": "fp_l282_restoration_lab",
        "use_numbered_elements": [
          1,
          3,
          4,
          5,
          7,
          8,
          9,
          10,
          11,
          12,
          15,
          17
        ],
        "ignore_numbered_elements": [
          13,
          14,
          16
        ],
        "base_markers_to_reference": [
          {
            "number": 1,
            "label": "Laboratory",
            "category": "area",
            "position_hint": "entire rectangular room; marker in west circulation aisle",
            "base_layer_decision": "base_structural_unit",
            "render_role": "not_applicable",
            "top_down_legibility": "not_applicable"
          },
          {
            "number": 3,
            "label": "Restoration work area",
            "category": "area",
            "position_hint": "central-north floor surrounding the restoration table",
            "base_layer_decision": "base_structural_unit",
            "render_role": "not_applicable",
            "top_down_legibility": "not_applicable"
          },
          {
            "number": 4,
            "label": "Rear seating area",
            "category": "area",
            "position_hint": "south-central floor, behind the table relative to the monitor",
            "base_layer_decision": "base_structural_unit",
            "render_role": "not_applicable",
            "top_down_legibility": "not_applicable"
          },
          {
            "number": 5,
            "label": "Presentation area",
            "category": "area",
            "position_hint": "east-central open floor, east of table and northeast of seating",
            "base_layer_decision": "base_structural_unit",
            "render_role": "not_applicable",
            "top_down_legibility": "not_applicable"
          },
          {
            "number": 7,
            "label": "Restoration table",
            "category": "furniture",
            "position_hint": "central-north work area, long axis east-west, south of monitor",
            "base_layer_decision": "base_persistent_furniture",
            "render_role": "not_applicable",
            "top_down_legibility": "not_applicable"
          },
          {
            "number": 8,
            "label": "West rear chair",
            "category": "furniture",
            "position_hint": "west side of rear seating area, facing north",
            "base_layer_decision": "base_persistent_furniture",
            "render_role": "not_applicable",
            "top_down_legibility": "not_applicable"
          },
          {
            "number": 9,
            "label": "East rear chair",
            "category": "furniture",
            "position_hint": "beside west chair in rear seating area, facing north",
            "base_layer_decision": "base_persistent_furniture",
            "render_role": "not_applicable",
            "top_down_legibility": "not_applicable"
          },
          {
            "number": 10,
            "label": "Large status monitor",
            "category": "prop",
            "position_hint": "north wall, centered behind restoration table",
            "base_layer_decision": "base_persistent_fixture",
            "render_role": "not_applicable",
            "top_down_legibility": "not_applicable"
          },
          {
            "number": 11,
            "label": "Presentation control button",
            "category": "prop",
            "position_hint": "integrated into southwest edge of restoration table, reachable from seating side",
            "base_layer_decision": "base_persistent_fixture",
            "render_role": "not_applicable",
            "top_down_legibility": "not_applicable"
          }
        ],
        "transient_markers_to_describe": [
          {
            "number": 12,
            "label": "Disassembled robot components",
            "category": "prop",
            "position_hint": "on number 7 during the chip handover; never drawn on base plan",
            "base_layer_decision": "state_overlay_transient_object",
            "render_role": "not_applicable",
            "top_down_legibility": "not_applicable"
          },
          {
            "number": 15,
            "label": "Projected landscape and giant robot",
            "category": "prop",
            "position_hint": "projected into the air over number 5; entirely separate from the physical body on number 7",
            "base_layer_decision": "state_overlay_plot_cue",
            "render_role": "not_applicable",
            "top_down_legibility": "not_applicable"
          },
          {
            "number": 17,
            "label": "Island landscape display",
            "category": "prop",
            "position_hint": "confined to number 10 during the hologram presentation, replacing number 16",
            "base_layer_decision": "state_overlay_plot_cue",
            "render_role": "not_applicable",
            "top_down_legibility": "not_applicable"
          }
        ],
        "ignored_state_overlay_markers": [
          {
            "number": 13,
            "label": "Reassembled physical robot",
            "category": "prop",
            "position_hint": "lying on number 7 in the final restoration view, replacing the loose-component arrangement",
            "base_layer_decision": "state_overlay_transient_object",
            "render_role": "not_applicable",
            "top_down_legibility": "not_applicable"
          },
          {
            "number": 14,
            "label": "Memory chip",
            "category": "prop",
            "position_hint": "handover beside numbers 8 and 9; not a permanent tabletop object",
            "base_layer_decision": "state_overlay_transient_object",
            "render_role": "not_applicable",
            "top_down_legibility": "not_applicable"
          },
          {
            "number": 16,
            "label": "Worldwide energy supply display",
            "category": "prop",
            "position_hint": "confined to the screen surface of number 10 during the non-projection views",
            "base_layer_decision": "state_overlay_plot_cue",
            "render_role": "not_applicable",
            "top_down_legibility": "not_applicable"
          }
        ],
        "target_unit_marker_numbers": [
          1,
          3,
          4,
          5
        ],
        "dominant_target_unit_marker_number": null,
        "clean_background_expected": false,
        "diagnostics": [
          "multiple base_structural_unit markers in use_numbered_elements ([1, 3, 4, 5]); dominant_target_unit_marker_number left empty (W19B-1 lock — no lexical disambiguation)"
        ]
      }
    }
  },
  "step_id": "floor_plan_overlay_payload",
  "run_id": "9bf0ca6d-90b8-417f-b46f-d237e100e4e3",
  "resolved_model": "gpt",
  "updated_at": "2026-09-18T18:17:00.591725+00:00",
  "project_config_snapshot": {}
}