{
  "status": "completed",
  "applicable_count": 1,
  "completed_count": 1,
  "failed_count": 0,
  "schema_version": 1,
  "config_hash": "5d2891ceb277be8d",
  "data": {
    "overlays": {
      "L07B02": {
        "bg_id": "L07B02",
        "fp_id": "fp_luxury_house_yard",
        "use_numbered_elements": [
          1,
          2,
          3,
          4,
          5,
          6,
          7
        ],
        "ignore_numbered_elements": [],
        "base_markers_to_reference": [
          {
            "number": 1,
            "label": "Open garden lawn",
            "category": "area",
            "position_hint": "Central and southern garden; marker directly south of number 7 identifies the clear landing location within continuous lawn",
            "base_layer_decision": "base_structural_unit",
            "render_role": "not_applicable",
            "top_down_legibility": "not_applicable"
          },
          {
            "number": 2,
            "label": "House footprint and garden facade",
            "category": "area",
            "position_hint": "North edge of garden, with a defined southwest exterior corner",
            "base_layer_decision": "base_structural_unit",
            "render_role": "not_applicable",
            "top_down_legibility": "not_applicable"
          },
          {
            "number": 3,
            "label": "Perimeter wall",
            "category": "area",
            "position_hint": "Connected west, south, and east garden boundaries; single marker on the south segment",
            "base_layer_decision": "base_structural_unit",
            "render_role": "not_applicable",
            "top_down_legibility": "not_applicable"
          },
          {
            "number": 4,
            "label": "Entrance threshold",
            "category": "area",
            "position_hint": "Against the eastern portion of the south-facing house facade",
            "base_layer_decision": "base_structural_unit",
            "render_role": "not_applicable",
            "top_down_legibility": "not_applicable"
          },
          {
            "number": 5,
            "label": "Entrance door",
            "category": "opening",
            "position_hint": "House facade immediately north of number 4",
            "base_layer_decision": "base_opening",
            "render_role": "not_applicable",
            "top_down_legibility": "not_applicable"
          },
          {
            "number": 6,
            "label": "Operable living-room glazing",
            "category": "opening",
            "position_hint": "Western portion of the garden-facing facade at ground level",
            "base_layer_decision": "base_opening",
            "render_role": "not_applicable",
            "top_down_legibility": "not_applicable"
          },
          {
            "number": 7,
            "label": "Second-floor garden window",
            "category": "opening",
            "position_hint": "Upper floor of the central-eastern garden facade; plan glyph records horizontal position only, directly north of the lawn landing location",
            "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)"
        ]
      },
      "L11B01": {
        "bg_id": "L11B01",
        "fp_id": "fp_junkyard_access",
        "use_numbered_elements": [
          1,
          2,
          3,
          4,
          5,
          8,
          11,
          12
        ],
        "ignore_numbered_elements": [],
        "base_markers_to_reference": [
          {
            "number": 1,
            "label": "Open salvage yard",
            "category": "area",
            "position_hint": "overall outdoor site; marker in exposed southwest ground",
            "base_layer_decision": "base_structural_unit",
            "render_role": "not_applicable",
            "top_down_legibility": "not_applicable"
          },
          {
            "number": 2,
            "label": "Main waste mound",
            "category": "area",
            "position_hint": "northwest and north-center, immediately north of the work clearing",
            "base_layer_decision": "base_structural_unit",
            "render_role": "not_applicable",
            "top_down_legibility": "not_applicable"
          },
          {
            "number": 3,
            "label": "Scrap pile",
            "category": "area",
            "position_hint": "northeast of the work clearing, west of the departure passage",
            "base_layer_decision": "base_structural_unit",
            "render_role": "not_applicable",
            "top_down_legibility": "not_applicable"
          },
          {
            "number": 4,
            "label": "Salvage work clearing",
            "category": "area",
            "position_hint": "center of yard, south of the main mound and southwest of the scrap pile",
            "base_layer_decision": "base_structural_unit",
            "render_role": "not_applicable",
            "top_down_legibility": "not_applicable"
          },
          {
            "number": 5,
            "label": "Departure passage",
            "category": "area",
            "position_hint": "from the central clearing around the east side of the scrap pile to the northeast site edge",
            "base_layer_decision": "base_structural_unit",
            "render_role": "not_applicable",
            "top_down_legibility": "not_applicable"
          },
          {
            "number": 8,
            "label": "Manhole access",
            "category": "opening",
            "position_hint": "southeast side of yard on an access pad beside the departure passage",
            "base_layer_decision": "base_opening",
            "render_role": "not_applicable",
            "top_down_legibility": "not_applicable"
          }
        ],
        "transient_markers_to_describe": [
          {
            "number": 11,
            "label": "Locally displaced scrap",
            "category": "prop",
            "position_hint": "south edge of the northeastern scrap pile, adjoining the encounter space; local emergence continuity only",
            "base_layer_decision": "state_overlay_transient_object",
            "render_role": "not_applicable",
            "top_down_legibility": "not_applicable"
          },
          {
            "number": 12,
            "label": "Loose salvage repair setup",
            "category": "prop",
            "position_hint": "within the central work clearing; blanket, salvaged music machine, and loose repair items remain scene-local rather than fixed furniture",
            "base_layer_decision": "state_overlay_transient_object",
            "render_role": "not_applicable",
            "top_down_legibility": "not_applicable"
          }
        ],
        "ignored_state_overlay_markers": [],
        "target_unit_marker_numbers": [
          1,
          2,
          3,
          4,
          5
        ],
        "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)"
        ]
      },
      "L32B02": {
        "bg_id": "L32B02",
        "fp_id": "fp_sewer_and_crosscut_inset",
        "use_numbered_elements": [
          11
        ],
        "ignore_numbered_elements": [
          1,
          2,
          3,
          4,
          5,
          6,
          7,
          8,
          9,
          10
        ],
        "base_markers_to_reference": [
          {
            "number": 11,
            "label": "Reception room",
            "category": "area",
            "position_hint": "detached upper-right inset, separated from all sewer geometry by white space",
            "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": [
          11
        ],
        "dominant_target_unit_marker_number": 11,
        "clean_background_expected": true,
        "diagnostics": [
          "marker #1 in ignore_numbered_elements is a base layer marker ('base_structural_unit'); structural elements normally remain in use",
          "marker #2 in ignore_numbered_elements is a base layer marker ('base_opening'); structural elements normally remain in use",
          "marker #3 in ignore_numbered_elements is a base layer marker ('base_persistent_fixture'); structural elements normally remain in use",
          "marker #4 in ignore_numbered_elements is a base layer marker ('base_structural_unit'); structural elements normally remain in use",
          "marker #5 in ignore_numbered_elements is a base layer marker ('base_structural_unit'); structural elements normally remain in use",
          "marker #6 in ignore_numbered_elements is a base layer marker ('base_structural_unit'); structural elements normally remain in use",
          "marker #7 in ignore_numbered_elements is a base layer marker ('base_structural_unit'); structural elements normally remain in use",
          "marker #8 in ignore_numbered_elements is a base layer marker ('base_opening'); structural elements normally remain in use",
          "marker #9 in ignore_numbered_elements is a base layer marker ('base_opening'); structural elements normally remain in use",
          "marker #10 in ignore_numbered_elements is a base layer marker ('base_structural_unit'); structural elements normally remain in use"
        ]
      },
      "L32B03": {
        "bg_id": "L32B03",
        "fp_id": "fp_sewer_and_crosscut_inset",
        "use_numbered_elements": [
          4,
          5,
          6,
          7
        ],
        "ignore_numbered_elements": [
          11,
          12
        ],
        "base_markers_to_reference": [
          {
            "number": 4,
            "label": "Approach passage",
            "category": "area",
            "position_hint": "runs north from the access landing to the fork",
            "base_layer_decision": "base_structural_unit",
            "render_role": "not_applicable",
            "top_down_legibility": "not_applicable"
          },
          {
            "number": 5,
            "label": "Two-way fork",
            "category": "area",
            "position_hint": "central-left junction of the approach and two outgoing branches",
            "base_layer_decision": "base_structural_unit",
            "render_role": "not_applicable",
            "top_down_legibility": "not_applicable"
          },
          {
            "number": 6,
            "label": "West branch",
            "category": "area",
            "position_hint": "extends west from the fork toward the left plan boundary",
            "base_layer_decision": "base_structural_unit",
            "render_role": "not_applicable",
            "top_down_legibility": "not_applicable"
          },
          {
            "number": 7,
            "label": "Outlet branch",
            "category": "area",
            "position_hint": "extends northeast from the fork, then north toward the outlet",
            "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": [
          4,
          5,
          6,
          7
        ],
        "dominant_target_unit_marker_number": null,
        "clean_background_expected": true,
        "diagnostics": [
          "marker #11 in ignore_numbered_elements is a base layer marker ('base_structural_unit'); structural elements normally remain in use",
          "marker #12 in ignore_numbered_elements is a base layer marker ('base_opening'); structural elements normally remain in use",
          "multiple base_structural_unit markers in use_numbered_elements ([4, 5, 6, 7]); dominant_target_unit_marker_number left empty (W19B-1 lock — no lexical disambiguation)"
        ]
      },
      "L16B01": {
        "bg_id": "L16B01",
        "fp_id": "fp_refugee_court_interior",
        "use_numbered_elements": [
          1,
          2,
          3,
          4,
          5,
          6,
          7
        ],
        "ignore_numbered_elements": [],
        "base_markers_to_reference": [
          {
            "number": 1,
            "label": "Courtroom shared floor",
            "category": "area",
            "position_hint": "central and southern room, between the entry threshold and judge's table",
            "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 interior, immediately inside the entrance",
            "base_layer_decision": "base_structural_unit",
            "render_role": "not_applicable",
            "top_down_legibility": "not_applicable"
          },
          {
            "number": 3,
            "label": "Judge's working area",
            "category": "area",
            "position_hint": "north end, including the table, chair, and clear floor beside the chair",
            "base_layer_decision": "base_structural_unit",
            "render_role": "not_applicable",
            "top_down_legibility": "not_applicable"
          },
          {
            "number": 4,
            "label": "Courtroom entrance",
            "category": "opening",
            "position_hint": "south wall toward the west, swinging inward toward the west wall",
            "base_layer_decision": "base_opening",
            "render_role": "not_applicable",
            "top_down_legibility": "not_applicable"
          },
          {
            "number": 5,
            "label": "Judge's table",
            "category": "furniture",
            "position_hint": "northern administrative area, oriented east-west with circulation at both ends",
            "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 the table, facing south, with clear floor to its east",
            "base_layer_decision": "base_persistent_furniture",
            "render_role": "not_applicable",
            "top_down_legibility": "not_applicable"
          },
          {
            "number": 7,
            "label": "Persistent document stacks",
            "category": "prop",
            "position_hint": "western portion of the judge's tabletop; persistent tabletop furnishing anchor",
            "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
        ],
        "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)"
        ]
      },
      "L16B02": {
        "bg_id": "L16B02",
        "fp_id": "fp_refugee_court_interior",
        "use_numbered_elements": [
          3,
          5,
          6
        ],
        "ignore_numbered_elements": [],
        "base_markers_to_reference": [
          {
            "number": 3,
            "label": "Judge's working area",
            "category": "area",
            "position_hint": "north end, including the table, chair, and clear floor beside the chair",
            "base_layer_decision": "base_structural_unit",
            "render_role": "not_applicable",
            "top_down_legibility": "not_applicable"
          },
          {
            "number": 5,
            "label": "Judge's table",
            "category": "furniture",
            "position_hint": "northern administrative area, oriented east-west with circulation at both ends",
            "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 the table, facing south, with clear floor to its east",
            "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": [
          3
        ],
        "dominant_target_unit_marker_number": 3,
        "clean_background_expected": true,
        "diagnostics": []
      },
      "L18B01": {
        "bg_id": "L18B01",
        "fp_id": "fp_refugee_court_dump",
        "use_numbered_elements": [
          1,
          2,
          3,
          4,
          5,
          6
        ],
        "ignore_numbered_elements": [],
        "base_markers_to_reference": [
          {
            "number": 1,
            "label": "Northern heap footprint",
            "category": "area",
            "position_hint": "north side, behind the central clearing",
            "base_layer_decision": "base_structural_unit",
            "render_role": "not_applicable",
            "top_down_legibility": "not_applicable"
          },
          {
            "number": 2,
            "label": "Western heap footprint",
            "category": "area",
            "position_hint": "west side of the central clearing",
            "base_layer_decision": "base_structural_unit",
            "render_role": "not_applicable",
            "top_down_legibility": "not_applicable"
          },
          {
            "number": 3,
            "label": "Eastern heap footprint",
            "category": "area",
            "position_hint": "east side, immediately north of the bare-ground pocket",
            "base_layer_decision": "base_structural_unit",
            "render_role": "not_applicable",
            "top_down_legibility": "not_applicable"
          },
          {
            "number": 4,
            "label": "Central ground clearing",
            "category": "area",
            "position_hint": "center, between the heap footprints and connected to the southern clearance",
            "base_layer_decision": "base_structural_unit",
            "render_role": "not_applicable",
            "top_down_legibility": "not_applicable"
          },
          {
            "number": 5,
            "label": "Bare-ground landing pocket",
            "category": "area",
            "position_hint": "southeast of the central clearing, beside the eastern heap",
            "base_layer_decision": "base_structural_unit",
            "render_role": "not_applicable",
            "top_down_legibility": "not_applicable"
          },
          {
            "number": 6,
            "label": "Open walking clearance",
            "category": "area",
            "position_hint": "south side, connecting the central clearing to ground beyond the crop",
            "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)"
        ]
      },
      "L19B02": {
        "bg_id": "L19B02",
        "fp_id": "fp_alley_restaurant",
        "use_numbered_elements": [
          1,
          3,
          5,
          6,
          7,
          8,
          9,
          10,
          11,
          12
        ],
        "ignore_numbered_elements": [
          13
        ],
        "base_markers_to_reference": [
          {
            "number": 1,
            "label": "Shared dining area",
            "category": "area",
            "position_hint": "Central and western portion of the restaurant, including the clear approach aisle",
            "base_layer_decision": "base_structural_unit",
            "render_role": "not_applicable",
            "top_down_legibility": "not_applicable"
          },
          {
            "number": 3,
            "label": "Secluded dining corner",
            "category": "area",
            "position_hint": "Northeast end of the same open room, farthest from the entrance",
            "base_layer_decision": "base_structural_unit",
            "render_role": "not_applicable",
            "top_down_legibility": "not_applicable"
          },
          {
            "number": 5,
            "label": "Transaction table",
            "category": "furniture",
            "position_hint": "Northeast dining corner, long axis east-west, with access from the south and west",
            "base_layer_decision": "base_persistent_furniture",
            "render_role": "not_applicable",
            "top_down_legibility": "not_applicable"
          },
          {
            "number": 6,
            "label": "North transaction chair",
            "category": "furniture",
            "position_hint": "North side of table 5, facing south, with a gap behind it to the north wall",
            "base_layer_decision": "base_persistent_furniture",
            "render_role": "not_applicable",
            "top_down_legibility": "not_applicable"
          },
          {
            "number": 7,
            "label": "South transaction chair",
            "category": "furniture",
            "position_hint": "South side of table 5, facing north toward chair 6",
            "base_layer_decision": "base_persistent_furniture",
            "render_role": "not_applicable",
            "top_down_legibility": "not_applicable"
          },
          {
            "number": 8,
            "label": "Red warning-lamp fixture",
            "category": "prop",
            "position_hint": "Mounted high on the north wall, slightly west of the centerline of table 5",
            "base_layer_decision": "base_persistent_fixture",
            "render_role": "not_applicable",
            "top_down_legibility": "not_applicable"
          },
          {
            "number": 9,
            "label": "Shared dining table",
            "category": "furniture",
            "position_hint": "West-central shared zone, clear of the entrance swing and central aisle",
            "base_layer_decision": "base_persistent_furniture",
            "render_role": "not_applicable",
            "top_down_legibility": "not_applicable"
          },
          {
            "number": 10,
            "label": "North shared chair",
            "category": "furniture",
            "position_hint": "North side of table 9",
            "base_layer_decision": "base_persistent_furniture",
            "render_role": "not_applicable",
            "top_down_legibility": "not_applicable"
          },
          {
            "number": 11,
            "label": "South shared chair",
            "category": "furniture",
            "position_hint": "South side of table 9",
            "base_layer_decision": "base_persistent_furniture",
            "render_role": "not_applicable",
            "top_down_legibility": "not_applicable"
          }
        ],
        "transient_markers_to_describe": [
          {
            "number": 12,
            "label": "Money envelope",
            "category": "prop",
            "position_hint": "At transaction table 5; tabletop or participant-held placement follows the individual shot rather than a fixed plan position",
            "base_layer_decision": "state_overlay_transient_object",
            "render_role": "not_applicable",
            "top_down_legibility": "not_applicable"
          }
        ],
        "ignored_state_overlay_markers": [
          {
            "number": 13,
            "label": "Active red warning spill",
            "category": "prop",
            "position_hint": "Originates at fixture 8 and spreads across the adjacent north wall around the secluded table",
            "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)"
        ]
      },
      "L19B01": {
        "bg_id": "L19B01",
        "fp_id": "fp_alley_restaurant",
        "use_numbered_elements": [
          3,
          5,
          6,
          8,
          13
        ],
        "ignore_numbered_elements": [
          12
        ],
        "base_markers_to_reference": [
          {
            "number": 3,
            "label": "Secluded dining corner",
            "category": "area",
            "position_hint": "Northeast end of the same open room, farthest from the entrance",
            "base_layer_decision": "base_structural_unit",
            "render_role": "not_applicable",
            "top_down_legibility": "not_applicable"
          },
          {
            "number": 5,
            "label": "Transaction table",
            "category": "furniture",
            "position_hint": "Northeast dining corner, long axis east-west, with access from the south and west",
            "base_layer_decision": "base_persistent_furniture",
            "render_role": "not_applicable",
            "top_down_legibility": "not_applicable"
          },
          {
            "number": 6,
            "label": "North transaction chair",
            "category": "furniture",
            "position_hint": "North side of table 5, facing south, with a gap behind it to the north wall",
            "base_layer_decision": "base_persistent_furniture",
            "render_role": "not_applicable",
            "top_down_legibility": "not_applicable"
          },
          {
            "number": 8,
            "label": "Red warning-lamp fixture",
            "category": "prop",
            "position_hint": "Mounted high on the north wall, slightly west of the centerline of table 5",
            "base_layer_decision": "base_persistent_fixture",
            "render_role": "not_applicable",
            "top_down_legibility": "not_applicable"
          }
        ],
        "transient_markers_to_describe": [
          {
            "number": 13,
            "label": "Active red warning spill",
            "category": "prop",
            "position_hint": "Originates at fixture 8 and spreads across the adjacent north wall around the secluded table",
            "base_layer_decision": "state_overlay_plot_cue",
            "render_role": "not_applicable",
            "top_down_legibility": "not_applicable"
          }
        ],
        "ignored_state_overlay_markers": [
          {
            "number": 12,
            "label": "Money envelope",
            "category": "prop",
            "position_hint": "At transaction table 5; tabletop or participant-held placement follows the individual shot rather than a fixed plan position",
            "base_layer_decision": "state_overlay_transient_object",
            "render_role": "not_applicable",
            "top_down_legibility": "not_applicable"
          }
        ],
        "target_unit_marker_numbers": [
          3
        ],
        "dominant_target_unit_marker_number": 3,
        "clean_background_expected": false,
        "diagnostics": []
      },
      "L22B02": {
        "bg_id": "L22B02",
        "fp_id": "fp_container_shared_interior",
        "use_numbered_elements": [
          1,
          2,
          3,
          4,
          5,
          6,
          7,
          8,
          9,
          10,
          11,
          12,
          13,
          14,
          15
        ],
        "ignore_numbered_elements": [
          16
        ],
        "base_markers_to_reference": [
          {
            "number": 1,
            "label": "Shared dining and living room",
            "category": "area",
            "position_hint": "central elongated room between west threshold and east private boundary",
            "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 end of the shared room, immediately inside the entrance",
            "base_layer_decision": "base_structural_unit",
            "render_role": "not_applicable",
            "top_down_legibility": "not_applicable"
          },
          {
            "number": 3,
            "label": "Private-room boundary strip",
            "category": "area",
            "position_hint": "shallow strip beyond the east partition; bedroom interior outside scope",
            "base_layer_decision": "base_structural_unit",
            "render_role": "not_applicable",
            "top_down_legibility": "not_applicable"
          },
          {
            "number": 4,
            "label": "Entrance door",
            "category": "opening",
            "position_hint": "west end wall toward the south corner, swinging inward",
            "base_layer_decision": "base_opening",
            "render_role": "not_applicable",
            "top_down_legibility": "not_applicable"
          },
          {
            "number": 5,
            "label": "Curtained bedroom passage",
            "category": "opening",
            "position_hint": "south end of the east partition, aligned with the circulation aisle",
            "base_layer_decision": "base_opening",
            "render_role": "not_applicable",
            "top_down_legibility": "not_applicable"
          },
          {
            "number": 6,
            "label": "Dining and sewing table",
            "category": "furniture",
            "position_hint": "north-central shared room, leaving the south aisle clear",
            "base_layer_decision": "base_persistent_furniture",
            "render_role": "not_applicable",
            "top_down_legibility": "not_applicable"
          },
          {
            "number": 7,
            "label": "West dining stool",
            "category": "furniture",
            "position_hint": "west side of number 6",
            "base_layer_decision": "base_persistent_furniture",
            "render_role": "not_applicable",
            "top_down_legibility": "not_applicable"
          },
          {
            "number": 8,
            "label": "South dining stool",
            "category": "furniture",
            "position_hint": "south side of number 6, outside the main circulation aisle",
            "base_layer_decision": "base_persistent_furniture",
            "render_role": "not_applicable",
            "top_down_legibility": "not_applicable"
          },
          {
            "number": 9,
            "label": "East dining stool",
            "category": "furniture",
            "position_hint": "east side of number 6",
            "base_layer_decision": "base_persistent_furniture",
            "render_role": "not_applicable",
            "top_down_legibility": "not_applicable"
          },
          {
            "number": 10,
            "label": "Vase-support ledge",
            "category": "furniture",
            "position_hint": "against the north wall near the east end of the shared room",
            "base_layer_decision": "base_persistent_furniture",
            "render_role": "not_applicable",
            "top_down_legibility": "not_applicable"
          }
        ],
        "transient_markers_to_describe": [
          {
            "number": 11,
            "label": "Intact vase",
            "category": "prop",
            "position_hint": "on number 10 in the pre-accident nighttime state only",
            "base_layer_decision": "state_overlay_transient_object",
            "render_role": "not_applicable",
            "top_down_legibility": "not_applicable"
          },
          {
            "number": 12,
            "label": "Table candle",
            "category": "prop",
            "position_hint": "near the center of number 6 in the nighttime background",
            "base_layer_decision": "state_overlay_transient_object",
            "render_role": "not_applicable",
            "top_down_legibility": "not_applicable"
          },
          {
            "number": 13,
            "label": "Single meal setting",
            "category": "prop",
            "position_hint": "south portion of number 6, beside number 8, in the nighttime background",
            "base_layer_decision": "state_overlay_transient_object",
            "render_role": "not_applicable",
            "top_down_legibility": "not_applicable"
          },
          {
            "number": 14,
            "label": "Old clothing and sewing items",
            "category": "prop",
            "position_hint": "west portion of number 6 in the nighttime background",
            "base_layer_decision": "state_overlay_transient_object",
            "render_role": "not_applicable",
            "top_down_legibility": "not_applicable"
          },
          {
            "number": 15,
            "label": "Medicine container",
            "category": "prop",
            "position_hint": "east portion of number 6; opened during the later nighttime exchange",
            "base_layer_decision": "state_overlay_transient_object",
            "render_role": "not_applicable",
            "top_down_legibility": "not_applicable"
          }
        ],
        "ignored_state_overlay_markers": [
          {
            "number": 16,
            "label": "Settled broken vase fragments",
            "category": "prop",
            "position_hint": "localized floor patch immediately south of number 10, with some fragments pushed beneath its front edge after the accident",
            "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)"
        ]
      },
      "L22B01": {
        "bg_id": "L22B01",
        "fp_id": "fp_container_shared_interior",
        "use_numbered_elements": [
          1,
          2,
          3,
          5,
          6,
          7,
          8,
          9,
          10,
          16
        ],
        "ignore_numbered_elements": [
          11,
          12,
          13,
          14,
          15
        ],
        "base_markers_to_reference": [
          {
            "number": 1,
            "label": "Shared dining and living room",
            "category": "area",
            "position_hint": "central elongated room between west threshold and east private boundary",
            "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 end of the shared room, immediately inside the entrance",
            "base_layer_decision": "base_structural_unit",
            "render_role": "not_applicable",
            "top_down_legibility": "not_applicable"
          },
          {
            "number": 3,
            "label": "Private-room boundary strip",
            "category": "area",
            "position_hint": "shallow strip beyond the east partition; bedroom interior outside scope",
            "base_layer_decision": "base_structural_unit",
            "render_role": "not_applicable",
            "top_down_legibility": "not_applicable"
          },
          {
            "number": 5,
            "label": "Curtained bedroom passage",
            "category": "opening",
            "position_hint": "south end of the east partition, aligned with the circulation aisle",
            "base_layer_decision": "base_opening",
            "render_role": "not_applicable",
            "top_down_legibility": "not_applicable"
          },
          {
            "number": 6,
            "label": "Dining and sewing table",
            "category": "furniture",
            "position_hint": "north-central shared room, leaving the south aisle clear",
            "base_layer_decision": "base_persistent_furniture",
            "render_role": "not_applicable",
            "top_down_legibility": "not_applicable"
          },
          {
            "number": 7,
            "label": "West dining stool",
            "category": "furniture",
            "position_hint": "west side of number 6",
            "base_layer_decision": "base_persistent_furniture",
            "render_role": "not_applicable",
            "top_down_legibility": "not_applicable"
          },
          {
            "number": 8,
            "label": "South dining stool",
            "category": "furniture",
            "position_hint": "south side of number 6, outside the main circulation aisle",
            "base_layer_decision": "base_persistent_furniture",
            "render_role": "not_applicable",
            "top_down_legibility": "not_applicable"
          },
          {
            "number": 9,
            "label": "East dining stool",
            "category": "furniture",
            "position_hint": "east side of number 6",
            "base_layer_decision": "base_persistent_furniture",
            "render_role": "not_applicable",
            "top_down_legibility": "not_applicable"
          },
          {
            "number": 10,
            "label": "Vase-support ledge",
            "category": "furniture",
            "position_hint": "against the north wall near the east end of the shared room",
            "base_layer_decision": "base_persistent_furniture",
            "render_role": "not_applicable",
            "top_down_legibility": "not_applicable"
          }
        ],
        "transient_markers_to_describe": [
          {
            "number": 16,
            "label": "Settled broken vase fragments",
            "category": "prop",
            "position_hint": "localized floor patch immediately south of number 10, with some fragments pushed beneath its front edge after the accident",
            "base_layer_decision": "state_overlay_transient_object",
            "render_role": "not_applicable",
            "top_down_legibility": "not_applicable"
          }
        ],
        "ignored_state_overlay_markers": [
          {
            "number": 11,
            "label": "Intact vase",
            "category": "prop",
            "position_hint": "on number 10 in the pre-accident nighttime state only",
            "base_layer_decision": "state_overlay_transient_object",
            "render_role": "not_applicable",
            "top_down_legibility": "not_applicable"
          },
          {
            "number": 12,
            "label": "Table candle",
            "category": "prop",
            "position_hint": "near the center of number 6 in the nighttime background",
            "base_layer_decision": "state_overlay_transient_object",
            "render_role": "not_applicable",
            "top_down_legibility": "not_applicable"
          },
          {
            "number": 13,
            "label": "Single meal setting",
            "category": "prop",
            "position_hint": "south portion of number 6, beside number 8, in the nighttime background",
            "base_layer_decision": "state_overlay_transient_object",
            "render_role": "not_applicable",
            "top_down_legibility": "not_applicable"
          },
          {
            "number": 14,
            "label": "Old clothing and sewing items",
            "category": "prop",
            "position_hint": "west portion of number 6 in the nighttime background",
            "base_layer_decision": "state_overlay_transient_object",
            "render_role": "not_applicable",
            "top_down_legibility": "not_applicable"
          },
          {
            "number": 15,
            "label": "Medicine container",
            "category": "prop",
            "position_hint": "east portion of number 6; opened during the later nighttime exchange",
            "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)"
        ]
      },
      "L23B02": {
        "bg_id": "L23B02",
        "fp_id": "fp_amber_room",
        "use_numbered_elements": [
          1,
          2,
          4
        ],
        "ignore_numbered_elements": [
          5
        ],
        "base_markers_to_reference": [
          {
            "number": 1,
            "label": "Sleeping compartment",
            "category": "area",
            "position_hint": "main rectangular room; marker in the private area northeast of the bed",
            "base_layer_decision": "base_structural_unit",
            "render_role": "not_applicable",
            "top_down_legibility": "not_applicable"
          },
          {
            "number": 2,
            "label": "Worn single bed",
            "category": "furniture",
            "position_hint": "against the west wall, long axis north-south, head at the north end",
            "base_layer_decision": "base_persistent_furniture",
            "render_role": "not_applicable",
            "top_down_legibility": "not_applicable"
          },
          {
            "number": 4,
            "label": "Clear entrance passage",
            "category": "area",
            "position_hint": "east side of the room, continuously connecting the doorway to the bedside",
            "base_layer_decision": "base_structural_unit",
            "render_role": "not_applicable",
            "top_down_legibility": "not_applicable"
          }
        ],
        "transient_markers_to_describe": [],
        "ignored_state_overlay_markers": [
          {
            "number": 5,
            "label": "Door open after arrival",
            "category": "opening",
            "position_hint": "at number 3, with the existing door leaf swung inward toward the east wall",
            "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": true,
        "diagnostics": [
          "multiple base_structural_unit markers in use_numbered_elements ([1, 4]); dominant_target_unit_marker_number left empty (W19B-1 lock — no lexical disambiguation)"
        ]
      },
      "L23B01": {
        "bg_id": "L23B01",
        "fp_id": "fp_amber_room",
        "use_numbered_elements": [
          1,
          2,
          3,
          4,
          5
        ],
        "ignore_numbered_elements": [],
        "base_markers_to_reference": [
          {
            "number": 1,
            "label": "Sleeping compartment",
            "category": "area",
            "position_hint": "main rectangular room; marker in the private area northeast of the bed",
            "base_layer_decision": "base_structural_unit",
            "render_role": "not_applicable",
            "top_down_legibility": "not_applicable"
          },
          {
            "number": 2,
            "label": "Worn single bed",
            "category": "furniture",
            "position_hint": "against the west wall, long axis north-south, head at the north end",
            "base_layer_decision": "base_persistent_furniture",
            "render_role": "not_applicable",
            "top_down_legibility": "not_applicable"
          },
          {
            "number": 3,
            "label": "Bedroom doorway",
            "category": "opening",
            "position_hint": "south wall near the southeast corner, east-jamb hinge, inward swing toward the east wall",
            "base_layer_decision": "base_opening",
            "render_role": "not_applicable",
            "top_down_legibility": "not_applicable"
          },
          {
            "number": 4,
            "label": "Clear entrance passage",
            "category": "area",
            "position_hint": "east side of the room, continuously connecting the doorway to the bedside",
            "base_layer_decision": "base_structural_unit",
            "render_role": "not_applicable",
            "top_down_legibility": "not_applicable"
          }
        ],
        "transient_markers_to_describe": [
          {
            "number": 5,
            "label": "Door open after arrival",
            "category": "opening",
            "position_hint": "at number 3, with the existing door leaf swung inward toward the east wall",
            "base_layer_decision": "state_overlay_plot_cue",
            "render_role": "not_applicable",
            "top_down_legibility": "not_applicable"
          }
        ],
        "ignored_state_overlay_markers": [],
        "target_unit_marker_numbers": [
          1,
          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)"
        ]
      },
      "L21B01": {
        "bg_id": "L21B01",
        "fp_id": "fp_container_front",
        "use_numbered_elements": [
          1,
          2,
          3,
          4,
          5,
          6
        ],
        "ignore_numbered_elements": [],
        "base_markers_to_reference": [
          {
            "number": 1,
            "label": "Container entry strip and shell",
            "category": "area",
            "position_hint": "Top of plan, inside the front wall; side walls continue beyond the upper crop",
            "base_layer_decision": "base_structural_unit",
            "render_role": "not_applicable",
            "top_down_legibility": "not_applicable"
          },
          {
            "number": 2,
            "label": "Front landing",
            "category": "area",
            "position_hint": "Immediately outside the central doorway, below the front wall",
            "base_layer_decision": "base_structural_unit",
            "render_role": "not_applicable",
            "top_down_legibility": "not_applicable"
          },
          {
            "number": 3,
            "label": "Exterior approach",
            "category": "area",
            "position_hint": "Lower portion of plan, extending laterally around the landing",
            "base_layer_decision": "base_structural_unit",
            "render_role": "not_applicable",
            "top_down_legibility": "not_applicable"
          },
          {
            "number": 4,
            "label": "Inward-swinging entrance door",
            "category": "opening",
            "position_hint": "Near the center of the front wall; left jamb hinge, swing into the interior entry strip",
            "base_layer_decision": "base_opening",
            "render_role": "not_applicable",
            "top_down_legibility": "not_applicable"
          },
          {
            "number": 5,
            "label": "Dwelling identifier fixture",
            "category": "prop",
            "position_hint": "Attached to the exterior front wall immediately right of the entrance",
            "base_layer_decision": "base_persistent_fixture",
            "render_role": "not_applicable",
            "top_down_legibility": "not_applicable"
          }
        ],
        "transient_markers_to_describe": [
          {
            "number": 6,
            "label": "Limited post-search entry damage",
            "category": "prop",
            "position_hint": "Localized around the exterior doorway surround and adjacent landing; leave the identifier legible and the door operable",
            "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)"
        ]
      },
      "L25B02": {
        "bg_id": "L25B02",
        "fp_id": "fp_junk_repair_shop",
        "use_numbered_elements": [
          8,
          9,
          12
        ],
        "ignore_numbered_elements": [
          11,
          13
        ],
        "base_markers_to_reference": [
          {
            "number": 8,
            "label": "Repair desk",
            "category": "furniture",
            "position_hint": "east-west across rear service zone, with access around its east end",
            "base_layer_decision": "base_persistent_furniture",
            "render_role": "not_applicable",
            "top_down_legibility": "not_applicable"
          },
          {
            "number": 9,
            "label": "Desktop computer assembly",
            "category": "prop",
            "position_hint": "west end of repair desk; monitor faces north toward operator space",
            "base_layer_decision": "base_persistent_fixture",
            "render_role": "not_applicable",
            "top_down_legibility": "not_applicable"
          }
        ],
        "transient_markers_to_describe": [
          {
            "number": 12,
            "label": "Reward news screen state",
            "category": "prop",
            "position_hint": "confined to the monitor screen of number 9; news with a prominent red 500 million won reward notice",
            "base_layer_decision": "state_overlay_plot_cue",
            "render_role": "not_applicable",
            "top_down_legibility": "not_applicable"
          }
        ],
        "ignored_state_overlay_markers": [
          {
            "number": 11,
            "label": "Television under repair",
            "category": "prop",
            "position_hint": "central repair-desk work surface, between computer and telephone",
            "base_layer_decision": "state_overlay_transient_object",
            "render_role": "not_applicable",
            "top_down_legibility": "not_applicable"
          },
          {
            "number": 13,
            "label": "Localized blood traces",
            "category": "prop",
            "position_hint": "repair-desk surface and immediately adjacent service area only; no trail into the customer aisle or salvage banks",
            "base_layer_decision": "state_overlay_plot_cue",
            "render_role": "not_applicable",
            "top_down_legibility": "not_applicable"
          }
        ],
        "target_unit_marker_numbers": [],
        "dominant_target_unit_marker_number": null,
        "clean_background_expected": false,
        "diagnostics": [
          "no base_structural_unit marker in use_numbered_elements; dominant_target_unit_marker_number left empty"
        ]
      },
      "L25B04": {
        "bg_id": "L25B04",
        "fp_id": "fp_junk_repair_shop",
        "use_numbered_elements": [
          1,
          2,
          3,
          4,
          5,
          6,
          7,
          8,
          9,
          10
        ],
        "ignore_numbered_elements": [
          11,
          12,
          13
        ],
        "base_markers_to_reference": [
          {
            "number": 1,
            "label": "Shop interior",
            "category": "area",
            "position_hint": "entire rectangular enclosure; marker at northwest interior margin",
            "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 center, immediately inside the street entrance",
            "base_layer_decision": "base_structural_unit",
            "render_role": "not_applicable",
            "top_down_legibility": "not_applicable"
          },
          {
            "number": 3,
            "label": "Street entrance",
            "category": "opening",
            "position_hint": "center of south wall, aligned with the central aisle",
            "base_layer_decision": "base_opening",
            "render_role": "not_applicable",
            "top_down_legibility": "not_applicable"
          },
          {
            "number": 4,
            "label": "Customer aisle",
            "category": "area",
            "position_hint": "central north-south passage connecting the threshold to the repair desk",
            "base_layer_decision": "base_structural_unit",
            "render_role": "not_applicable",
            "top_down_legibility": "not_applicable"
          },
          {
            "number": 5,
            "label": "Repair service zone",
            "category": "area",
            "position_hint": "rear northern portion, including the desk and operator clearance",
            "base_layer_decision": "base_structural_unit",
            "render_role": "not_applicable",
            "top_down_legibility": "not_applicable"
          },
          {
            "number": 6,
            "label": "West salvage bank",
            "category": "area",
            "position_hint": "along west wall between the threshold and rear service zone",
            "base_layer_decision": "base_structural_unit",
            "render_role": "not_applicable",
            "top_down_legibility": "not_applicable"
          },
          {
            "number": 7,
            "label": "East salvage bank",
            "category": "area",
            "position_hint": "along east wall between the threshold and rear service zone",
            "base_layer_decision": "base_structural_unit",
            "render_role": "not_applicable",
            "top_down_legibility": "not_applicable"
          },
          {
            "number": 8,
            "label": "Repair desk",
            "category": "furniture",
            "position_hint": "east-west across rear service zone, with access around its east end",
            "base_layer_decision": "base_persistent_furniture",
            "render_role": "not_applicable",
            "top_down_legibility": "not_applicable"
          },
          {
            "number": 9,
            "label": "Desktop computer assembly",
            "category": "prop",
            "position_hint": "west end of repair desk; monitor faces north toward operator space",
            "base_layer_decision": "base_persistent_fixture",
            "render_role": "not_applicable",
            "top_down_legibility": "not_applicable"
          },
          {
            "number": 10,
            "label": "Wired telephone",
            "category": "prop",
            "position_hint": "east end of repair desk, within reach from the operator space",
            "base_layer_decision": "base_persistent_fixture",
            "render_role": "not_applicable",
            "top_down_legibility": "not_applicable"
          }
        ],
        "transient_markers_to_describe": [],
        "ignored_state_overlay_markers": [
          {
            "number": 11,
            "label": "Television under repair",
            "category": "prop",
            "position_hint": "central repair-desk work surface, between computer and telephone",
            "base_layer_decision": "state_overlay_transient_object",
            "render_role": "not_applicable",
            "top_down_legibility": "not_applicable"
          },
          {
            "number": 12,
            "label": "Reward news screen state",
            "category": "prop",
            "position_hint": "confined to the monitor screen of number 9; news with a prominent red 500 million won reward notice",
            "base_layer_decision": "state_overlay_plot_cue",
            "render_role": "not_applicable",
            "top_down_legibility": "not_applicable"
          },
          {
            "number": 13,
            "label": "Localized blood traces",
            "category": "prop",
            "position_hint": "repair-desk surface and immediately adjacent service area only; no trail into the customer aisle or salvage banks",
            "base_layer_decision": "state_overlay_plot_cue",
            "render_role": "not_applicable",
            "top_down_legibility": "not_applicable"
          }
        ],
        "target_unit_marker_numbers": [
          1,
          2,
          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, 2, 4, 5, 6, 7]); dominant_target_unit_marker_number left empty (W19B-1 lock — no lexical disambiguation)"
        ]
      },
      "L25B03": {
        "bg_id": "L25B03",
        "fp_id": "fp_junk_repair_shop",
        "use_numbered_elements": [
          1,
          4,
          5,
          6,
          7,
          8,
          9,
          10,
          11
        ],
        "ignore_numbered_elements": [
          12,
          13
        ],
        "base_markers_to_reference": [
          {
            "number": 1,
            "label": "Shop interior",
            "category": "area",
            "position_hint": "entire rectangular enclosure; marker at northwest interior margin",
            "base_layer_decision": "base_structural_unit",
            "render_role": "not_applicable",
            "top_down_legibility": "not_applicable"
          },
          {
            "number": 4,
            "label": "Customer aisle",
            "category": "area",
            "position_hint": "central north-south passage connecting the threshold to the repair desk",
            "base_layer_decision": "base_structural_unit",
            "render_role": "not_applicable",
            "top_down_legibility": "not_applicable"
          },
          {
            "number": 5,
            "label": "Repair service zone",
            "category": "area",
            "position_hint": "rear northern portion, including the desk and operator clearance",
            "base_layer_decision": "base_structural_unit",
            "render_role": "not_applicable",
            "top_down_legibility": "not_applicable"
          },
          {
            "number": 6,
            "label": "West salvage bank",
            "category": "area",
            "position_hint": "along west wall between the threshold and rear service zone",
            "base_layer_decision": "base_structural_unit",
            "render_role": "not_applicable",
            "top_down_legibility": "not_applicable"
          },
          {
            "number": 7,
            "label": "East salvage bank",
            "category": "area",
            "position_hint": "along east wall between the threshold and rear service zone",
            "base_layer_decision": "base_structural_unit",
            "render_role": "not_applicable",
            "top_down_legibility": "not_applicable"
          },
          {
            "number": 8,
            "label": "Repair desk",
            "category": "furniture",
            "position_hint": "east-west across rear service zone, with access around its east end",
            "base_layer_decision": "base_persistent_furniture",
            "render_role": "not_applicable",
            "top_down_legibility": "not_applicable"
          },
          {
            "number": 9,
            "label": "Desktop computer assembly",
            "category": "prop",
            "position_hint": "west end of repair desk; monitor faces north toward operator space",
            "base_layer_decision": "base_persistent_fixture",
            "render_role": "not_applicable",
            "top_down_legibility": "not_applicable"
          },
          {
            "number": 10,
            "label": "Wired telephone",
            "category": "prop",
            "position_hint": "east end of repair desk, within reach from the operator space",
            "base_layer_decision": "base_persistent_fixture",
            "render_role": "not_applicable",
            "top_down_legibility": "not_applicable"
          }
        ],
        "transient_markers_to_describe": [
          {
            "number": 11,
            "label": "Television under repair",
            "category": "prop",
            "position_hint": "central repair-desk work surface, between computer and telephone",
            "base_layer_decision": "state_overlay_transient_object",
            "render_role": "not_applicable",
            "top_down_legibility": "not_applicable"
          }
        ],
        "ignored_state_overlay_markers": [
          {
            "number": 12,
            "label": "Reward news screen state",
            "category": "prop",
            "position_hint": "confined to the monitor screen of number 9; news with a prominent red 500 million won reward notice",
            "base_layer_decision": "state_overlay_plot_cue",
            "render_role": "not_applicable",
            "top_down_legibility": "not_applicable"
          },
          {
            "number": 13,
            "label": "Localized blood traces",
            "category": "prop",
            "position_hint": "repair-desk surface and immediately adjacent service area only; no trail into the customer aisle or salvage banks",
            "base_layer_decision": "state_overlay_plot_cue",
            "render_role": "not_applicable",
            "top_down_legibility": "not_applicable"
          }
        ],
        "target_unit_marker_numbers": [
          1,
          4,
          5,
          6,
          7
        ],
        "dominant_target_unit_marker_number": null,
        "clean_background_expected": false,
        "diagnostics": [
          "multiple base_structural_unit markers in use_numbered_elements ([1, 4, 5, 6, 7]); dominant_target_unit_marker_number left empty (W19B-1 lock — no lexical disambiguation)"
        ]
      },
      "L25B01": {
        "bg_id": "L25B01",
        "fp_id": "fp_junk_repair_shop",
        "use_numbered_elements": [
          1,
          4,
          5,
          7,
          8,
          9,
          10,
          11,
          13
        ],
        "ignore_numbered_elements": [
          12
        ],
        "base_markers_to_reference": [
          {
            "number": 1,
            "label": "Shop interior",
            "category": "area",
            "position_hint": "entire rectangular enclosure; marker at northwest interior margin",
            "base_layer_decision": "base_structural_unit",
            "render_role": "not_applicable",
            "top_down_legibility": "not_applicable"
          },
          {
            "number": 4,
            "label": "Customer aisle",
            "category": "area",
            "position_hint": "central north-south passage connecting the threshold to the repair desk",
            "base_layer_decision": "base_structural_unit",
            "render_role": "not_applicable",
            "top_down_legibility": "not_applicable"
          },
          {
            "number": 5,
            "label": "Repair service zone",
            "category": "area",
            "position_hint": "rear northern portion, including the desk and operator clearance",
            "base_layer_decision": "base_structural_unit",
            "render_role": "not_applicable",
            "top_down_legibility": "not_applicable"
          },
          {
            "number": 7,
            "label": "East salvage bank",
            "category": "area",
            "position_hint": "along east wall between the threshold and rear service zone",
            "base_layer_decision": "base_structural_unit",
            "render_role": "not_applicable",
            "top_down_legibility": "not_applicable"
          },
          {
            "number": 8,
            "label": "Repair desk",
            "category": "furniture",
            "position_hint": "east-west across rear service zone, with access around its east end",
            "base_layer_decision": "base_persistent_furniture",
            "render_role": "not_applicable",
            "top_down_legibility": "not_applicable"
          },
          {
            "number": 9,
            "label": "Desktop computer assembly",
            "category": "prop",
            "position_hint": "west end of repair desk; monitor faces north toward operator space",
            "base_layer_decision": "base_persistent_fixture",
            "render_role": "not_applicable",
            "top_down_legibility": "not_applicable"
          },
          {
            "number": 10,
            "label": "Wired telephone",
            "category": "prop",
            "position_hint": "east end of repair desk, within reach from the operator space",
            "base_layer_decision": "base_persistent_fixture",
            "render_role": "not_applicable",
            "top_down_legibility": "not_applicable"
          }
        ],
        "transient_markers_to_describe": [
          {
            "number": 11,
            "label": "Television under repair",
            "category": "prop",
            "position_hint": "central repair-desk work surface, between computer and telephone",
            "base_layer_decision": "state_overlay_transient_object",
            "render_role": "not_applicable",
            "top_down_legibility": "not_applicable"
          },
          {
            "number": 13,
            "label": "Localized blood traces",
            "category": "prop",
            "position_hint": "repair-desk surface and immediately adjacent service area only; no trail into the customer aisle or salvage banks",
            "base_layer_decision": "state_overlay_plot_cue",
            "render_role": "not_applicable",
            "top_down_legibility": "not_applicable"
          }
        ],
        "ignored_state_overlay_markers": [
          {
            "number": 12,
            "label": "Reward news screen state",
            "category": "prop",
            "position_hint": "confined to the monitor screen of number 9; news with a prominent red 500 million won reward notice",
            "base_layer_decision": "state_overlay_plot_cue",
            "render_role": "not_applicable",
            "top_down_legibility": "not_applicable"
          }
        ],
        "target_unit_marker_numbers": [
          1,
          4,
          5,
          7
        ],
        "dominant_target_unit_marker_number": null,
        "clean_background_expected": false,
        "diagnostics": [
          "multiple base_structural_unit markers in use_numbered_elements ([1, 4, 5, 7]); dominant_target_unit_marker_number left empty (W19B-1 lock — no lexical disambiguation)"
        ]
      },
      "L28B02": {
        "bg_id": "L28B02",
        "fp_id": "fp_militia_office",
        "use_numbered_elements": [
          1,
          2,
          3,
          4,
          5,
          6,
          7,
          8,
          9,
          10,
          11
        ],
        "ignore_numbered_elements": [
          12,
          13
        ],
        "base_markers_to_reference": [
          {
            "number": 1,
            "label": "Office work zone",
            "category": "area",
            "position_hint": "Northern half of the room, containing the desk and command chair",
            "base_layer_decision": "base_structural_unit",
            "render_role": "not_applicable",
            "top_down_legibility": "not_applicable"
          },
          {
            "number": 2,
            "label": "Visitor standing zone",
            "category": "area",
            "position_hint": "Southern half, directly between the desk and south wall",
            "base_layer_decision": "base_structural_unit",
            "render_role": "not_applicable",
            "top_down_legibility": "not_applicable"
          },
          {
            "number": 3,
            "label": "Entrance threshold",
            "category": "area",
            "position_hint": "Southwest corner, immediately inside the west-wall entrance",
            "base_layer_decision": "base_structural_unit",
            "render_role": "not_applicable",
            "top_down_legibility": "not_applicable"
          },
          {
            "number": 4,
            "label": "Wooden wall lining",
            "category": "area",
            "position_hint": "Continuous south-wall strip behind the visitor standing zone",
            "base_layer_decision": "base_structural_unit",
            "render_role": "not_applicable",
            "top_down_legibility": "not_applicable"
          },
          {
            "number": 5,
            "label": "Command desk",
            "category": "furniture",
            "position_hint": "Northern half of the office, long axis east-west",
            "base_layer_decision": "base_persistent_furniture",
            "render_role": "not_applicable",
            "top_down_legibility": "not_applicable"
          },
          {
            "number": 6,
            "label": "Command chair",
            "category": "furniture",
            "position_hint": "Immediately north of the desk, facing the visitor zone",
            "base_layer_decision": "base_persistent_furniture",
            "render_role": "not_applicable",
            "top_down_legibility": "not_applicable"
          },
          {
            "number": 7,
            "label": "Speakerphone",
            "category": "prop",
            "position_hint": "Northwest corner of the desktop, outside the central map footprint",
            "base_layer_decision": "base_persistent_fixture",
            "render_role": "not_applicable",
            "top_down_legibility": "not_applicable"
          },
          {
            "number": 8,
            "label": "Office entrance door",
            "category": "opening",
            "position_hint": "West 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": [
          {
            "number": 9,
            "label": "Knife impact mark",
            "category": "prop",
            "position_hint": "South-wall lining, slightly east of the desk centerline and behind the visitor; same point as number 10",
            "base_layer_decision": "state_overlay_plot_cue",
            "render_role": "not_applicable",
            "top_down_legibility": "not_applicable"
          },
          {
            "number": 10,
            "label": "Embedded knife",
            "category": "prop",
            "position_hint": "Embedded at number 9 on the south-wall lining, projecting into the room",
            "base_layer_decision": "state_overlay_transient_object",
            "render_role": "not_applicable",
            "top_down_legibility": "not_applicable"
          },
          {
            "number": 11,
            "label": "Impact splinters",
            "category": "prop",
            "position_hint": "Immediately around number 9; present only during the impact instant, never a persistent debris field",
            "base_layer_decision": "state_overlay_transient_object",
            "render_role": "not_applicable",
            "top_down_legibility": "not_applicable"
          }
        ],
        "ignored_state_overlay_markers": [
          {
            "number": 12,
            "label": "Large peninsula map",
            "category": "prop",
            "position_hint": "Centered flat on number 5, geographic north toward the room's north wall and geographic south toward the visitor zone; keep number 7 uncovered",
            "base_layer_decision": "state_overlay_transient_object",
            "render_role": "not_applicable",
            "top_down_legibility": "not_applicable"
          },
          {
            "number": 13,
            "label": "Map dart strike",
            "category": "prop",
            "position_hint": "On the exposed central portion of number 12; lock the chosen strike point across the map-background shots without asserting an unsupported geographic target",
            "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)"
        ]
      },
      "L28B01": {
        "bg_id": "L28B01",
        "fp_id": "fp_militia_office",
        "use_numbered_elements": [
          1,
          5,
          7,
          12,
          13
        ],
        "ignore_numbered_elements": [
          4,
          8,
          9,
          10,
          11
        ],
        "base_markers_to_reference": [
          {
            "number": 1,
            "label": "Office work zone",
            "category": "area",
            "position_hint": "Northern half of the room, containing the desk and command chair",
            "base_layer_decision": "base_structural_unit",
            "render_role": "not_applicable",
            "top_down_legibility": "not_applicable"
          },
          {
            "number": 5,
            "label": "Command desk",
            "category": "furniture",
            "position_hint": "Northern half of the office, long axis east-west",
            "base_layer_decision": "base_persistent_furniture",
            "render_role": "not_applicable",
            "top_down_legibility": "not_applicable"
          },
          {
            "number": 7,
            "label": "Speakerphone",
            "category": "prop",
            "position_hint": "Northwest corner of the desktop, outside the central map footprint",
            "base_layer_decision": "base_persistent_fixture",
            "render_role": "not_applicable",
            "top_down_legibility": "not_applicable"
          }
        ],
        "transient_markers_to_describe": [
          {
            "number": 12,
            "label": "Large peninsula map",
            "category": "prop",
            "position_hint": "Centered flat on number 5, geographic north toward the room's north wall and geographic south toward the visitor zone; keep number 7 uncovered",
            "base_layer_decision": "state_overlay_transient_object",
            "render_role": "not_applicable",
            "top_down_legibility": "not_applicable"
          },
          {
            "number": 13,
            "label": "Map dart strike",
            "category": "prop",
            "position_hint": "On the exposed central portion of number 12; lock the chosen strike point across the map-background shots without asserting an unsupported geographic target",
            "base_layer_decision": "state_overlay_transient_object",
            "render_role": "not_applicable",
            "top_down_legibility": "not_applicable"
          }
        ],
        "ignored_state_overlay_markers": [
          {
            "number": 9,
            "label": "Knife impact mark",
            "category": "prop",
            "position_hint": "South-wall lining, slightly east of the desk centerline and behind the visitor; same point as number 10",
            "base_layer_decision": "state_overlay_plot_cue",
            "render_role": "not_applicable",
            "top_down_legibility": "not_applicable"
          },
          {
            "number": 10,
            "label": "Embedded knife",
            "category": "prop",
            "position_hint": "Embedded at number 9 on the south-wall lining, projecting into the room",
            "base_layer_decision": "state_overlay_transient_object",
            "render_role": "not_applicable",
            "top_down_legibility": "not_applicable"
          },
          {
            "number": 11,
            "label": "Impact splinters",
            "category": "prop",
            "position_hint": "Immediately around number 9; present only during the impact instant, never a persistent debris field",
            "base_layer_decision": "state_overlay_transient_object",
            "render_role": "not_applicable",
            "top_down_legibility": "not_applicable"
          }
        ],
        "target_unit_marker_numbers": [
          1
        ],
        "dominant_target_unit_marker_number": 1,
        "clean_background_expected": false,
        "diagnostics": [
          "marker #4 in ignore_numbered_elements is a base layer marker ('base_structural_unit'); structural elements normally remain in use",
          "marker #8 in ignore_numbered_elements is a base layer marker ('base_opening'); structural elements normally remain in use"
        ]
      },
      "L30B01": {
        "bg_id": "L30B01",
        "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": "Main meeting area",
            "category": "area",
            "position_hint": "main room interior surrounding the central table, excluding the southwest circulation strip",
            "base_layer_decision": "base_structural_unit",
            "render_role": "not_applicable",
            "top_down_legibility": "not_applicable"
          },
          {
            "number": 2,
            "label": "Visitor entry circulation",
            "category": "area",
            "position_hint": "southwest room interior, connecting the west-wall doorway to the south seat",
            "base_layer_decision": "base_structural_unit",
            "render_role": "not_applicable",
            "top_down_legibility": "not_applicable"
          },
          {
            "number": 3,
            "label": "Visitor entry door",
            "category": "opening",
            "position_hint": "west wall, lower portion, opening into the visitor circulation area",
            "base_layer_decision": "base_opening",
            "render_role": "not_applicable",
            "top_down_legibility": "not_applicable"
          },
          {
            "number": 4,
            "label": "Central meeting table",
            "category": "furniture",
            "position_hint": "room center, rectangular tabletop with 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 on the north side of the table, 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 on the south side of the table, facing north",
            "base_layer_decision": "base_persistent_furniture",
            "render_role": "not_applicable",
            "top_down_legibility": "not_applicable"
          }
        ],
        "transient_markers_to_describe": [
          {
            "number": 7,
            "label": "Presented reference photograph",
            "category": "prop",
            "position_hint": "on the central tabletop, presented from the south visitor side toward the north detainee side",
            "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)"
        ]
      },
      "L35B03": {
        "bg_id": "L35B03",
        "fp_id": "fp_church_basement_stairs",
        "use_numbered_elements": [
          1,
          2,
          3,
          5,
          6,
          7
        ],
        "ignore_numbered_elements": [],
        "base_markers_to_reference": [
          {
            "number": 1,
            "label": "Basement landing",
            "category": "area",
            "position_hint": "south end of the enclosure, between the prayer-room passage and stair foot",
            "base_layer_decision": "base_structural_unit",
            "render_role": "not_applicable",
            "top_down_legibility": "not_applicable"
          },
          {
            "number": 2,
            "label": "Stair flight",
            "category": "area",
            "position_hint": "central north-south strip, ascending from the south landing toward the north landing",
            "base_layer_decision": "base_structural_unit",
            "render_role": "not_applicable",
            "top_down_legibility": "not_applicable"
          },
          {
            "number": 3,
            "label": "Ground-floor landing",
            "category": "area",
            "position_hint": "north end of the enclosure, immediately beyond the stair head",
            "base_layer_decision": "base_structural_unit",
            "render_role": "not_applicable",
            "top_down_legibility": "not_applicable"
          },
          {
            "number": 5,
            "label": "Ground-floor passage",
            "category": "opening",
            "position_hint": "center of the north boundary of number 3; church circulation continues outside the crop",
            "base_layer_decision": "base_opening",
            "render_role": "not_applicable",
            "top_down_legibility": "not_applicable"
          },
          {
            "number": 6,
            "label": "Stair handrail",
            "category": "prop",
            "position_hint": "along the west wall of number 2",
            "base_layer_decision": "base_persistent_fixture",
            "render_role": "not_applicable",
            "top_down_legibility": "not_applicable"
          }
        ],
        "transient_markers_to_describe": [
          {
            "number": 7,
            "label": "Carried candle",
            "category": "prop",
            "position_hint": "mobile overlay near the lower portion of number 2, carried by the adult leading the group",
            "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)"
        ]
      },
      "L36B03": {
        "bg_id": "L36B03",
        "fp_id": "fp_church_prayer_room",
        "use_numbered_elements": [
          1,
          6,
          7,
          8,
          9,
          10,
          11,
          12,
          13,
          14,
          16,
          17,
          18
        ],
        "ignore_numbered_elements": [
          19,
          20
        ],
        "base_markers_to_reference": [
          {
            "number": 1,
            "label": "Prayer room",
            "category": "area",
            "position_hint": "main rectangular interior",
            "base_layer_decision": "base_structural_unit",
            "render_role": "not_applicable",
            "top_down_legibility": "not_applicable"
          },
          {
            "number": 6,
            "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": 7,
            "label": "Small table",
            "category": "furniture",
            "position_hint": "east-central room, north of escape circulation route",
            "base_layer_decision": "base_persistent_furniture",
            "render_role": "not_applicable",
            "top_down_legibility": "not_applicable"
          },
          {
            "number": 8,
            "label": "North chair",
            "category": "furniture",
            "position_hint": "north side of table",
            "base_layer_decision": "base_persistent_furniture",
            "render_role": "not_applicable",
            "top_down_legibility": "not_applicable"
          },
          {
            "number": 9,
            "label": "East chair",
            "category": "furniture",
            "position_hint": "east side of table",
            "base_layer_decision": "base_persistent_furniture",
            "render_role": "not_applicable",
            "top_down_legibility": "not_applicable"
          },
          {
            "number": 10,
            "label": "South chair",
            "category": "furniture",
            "position_hint": "south side of table, clear of escape route",
            "base_layer_decision": "base_persistent_furniture",
            "render_role": "not_applicable",
            "top_down_legibility": "not_applicable"
          },
          {
            "number": 11,
            "label": "Reed organ",
            "category": "furniture",
            "position_hint": "northwest wall, keyboard facing south",
            "base_layer_decision": "base_persistent_furniture",
            "render_role": "not_applicable",
            "top_down_legibility": "not_applicable"
          },
          {
            "number": 12,
            "label": "Organ bench",
            "category": "furniture",
            "position_hint": "immediately south of organ keyboard",
            "base_layer_decision": "base_persistent_furniture",
            "render_role": "not_applicable",
            "top_down_legibility": "not_applicable"
          },
          {
            "number": 13,
            "label": "Radio home position",
            "category": "prop",
            "position_hint": "northeast corner; persistent equipment anchor, not a second radio",
            "base_layer_decision": "base_persistent_furniture",
            "render_role": "not_applicable",
            "top_down_legibility": "not_applicable"
          },
          {
            "number": 14,
            "label": "West lantern station",
            "category": "prop",
            "position_hint": "west wall midpoint",
            "base_layer_decision": "base_persistent_fixture",
            "render_role": "not_applicable",
            "top_down_legibility": "not_applicable"
          },
          {
            "number": 16,
            "label": "East lantern station",
            "category": "prop",
            "position_hint": "east wall north of escape doorway",
            "base_layer_decision": "base_persistent_fixture",
            "render_role": "not_applicable",
            "top_down_legibility": "not_applicable"
          },
          {
            "number": 17,
            "label": "North lantern station",
            "category": "prop",
            "position_hint": "north wall between cross and radio",
            "base_layer_decision": "base_persistent_fixture",
            "render_role": "not_applicable",
            "top_down_legibility": "not_applicable"
          }
        ],
        "transient_markers_to_describe": [
          {
            "number": 18,
            "label": "Powered refuge state",
            "category": "prop",
            "position_hint": "operating state of radio 13 and lantern stations 14 through 17; overlay only",
            "base_layer_decision": "state_overlay_plot_cue",
            "render_role": "not_applicable",
            "top_down_legibility": "not_applicable"
          }
        ],
        "ignored_state_overlay_markers": [
          {
            "number": 19,
            "label": "Handheld escape flashlight",
            "category": "prop",
            "position_hint": "carried along central route toward doorway 5 during urgent departure; overlay only",
            "base_layer_decision": "state_overlay_transient_object",
            "render_role": "not_applicable",
            "top_down_legibility": "not_applicable"
          },
          {
            "number": 20,
            "label": "Dark passage beyond doorway",
            "category": "area",
            "position_hint": "passage 4 beyond doorway 5 during escape preparation; overlay only",
            "base_layer_decision": "state_overlay_plot_cue",
            "render_role": "not_applicable",
            "top_down_legibility": "not_applicable"
          }
        ],
        "target_unit_marker_numbers": [
          1
        ],
        "dominant_target_unit_marker_number": 1,
        "clean_background_expected": false,
        "diagnostics": []
      },
      "L36B01": {
        "bg_id": "L36B01",
        "fp_id": "fp_church_prayer_room",
        "use_numbered_elements": [
          1,
          2,
          3,
          7,
          8,
          9,
          10,
          11,
          12,
          14,
          15,
          18
        ],
        "ignore_numbered_elements": [
          19,
          20
        ],
        "base_markers_to_reference": [
          {
            "number": 1,
            "label": "Prayer room",
            "category": "area",
            "position_hint": "main rectangular interior",
            "base_layer_decision": "base_structural_unit",
            "render_role": "not_applicable",
            "top_down_legibility": "not_applicable"
          },
          {
            "number": 2,
            "label": "Stair and landing",
            "category": "area",
            "position_hint": "attached to southwest corner; stair continues south toward the upper level",
            "base_layer_decision": "base_structural_unit",
            "render_role": "not_applicable",
            "top_down_legibility": "not_applicable"
          },
          {
            "number": 3,
            "label": "Stair access opening",
            "category": "opening",
            "position_hint": "between southwest landing and main room",
            "base_layer_decision": "base_opening",
            "render_role": "not_applicable",
            "top_down_legibility": "not_applicable"
          },
          {
            "number": 7,
            "label": "Small table",
            "category": "furniture",
            "position_hint": "east-central room, north of escape circulation route",
            "base_layer_decision": "base_persistent_furniture",
            "render_role": "not_applicable",
            "top_down_legibility": "not_applicable"
          },
          {
            "number": 8,
            "label": "North chair",
            "category": "furniture",
            "position_hint": "north side of table",
            "base_layer_decision": "base_persistent_furniture",
            "render_role": "not_applicable",
            "top_down_legibility": "not_applicable"
          },
          {
            "number": 9,
            "label": "East chair",
            "category": "furniture",
            "position_hint": "east side of table",
            "base_layer_decision": "base_persistent_furniture",
            "render_role": "not_applicable",
            "top_down_legibility": "not_applicable"
          },
          {
            "number": 10,
            "label": "South chair",
            "category": "furniture",
            "position_hint": "south side of table, clear of escape route",
            "base_layer_decision": "base_persistent_furniture",
            "render_role": "not_applicable",
            "top_down_legibility": "not_applicable"
          },
          {
            "number": 11,
            "label": "Reed organ",
            "category": "furniture",
            "position_hint": "northwest wall, keyboard facing south",
            "base_layer_decision": "base_persistent_furniture",
            "render_role": "not_applicable",
            "top_down_legibility": "not_applicable"
          },
          {
            "number": 12,
            "label": "Organ bench",
            "category": "furniture",
            "position_hint": "immediately south of organ keyboard",
            "base_layer_decision": "base_persistent_furniture",
            "render_role": "not_applicable",
            "top_down_legibility": "not_applicable"
          },
          {
            "number": 14,
            "label": "West lantern station",
            "category": "prop",
            "position_hint": "west wall midpoint",
            "base_layer_decision": "base_persistent_fixture",
            "render_role": "not_applicable",
            "top_down_legibility": "not_applicable"
          },
          {
            "number": 15,
            "label": "South lantern station",
            "category": "prop",
            "position_hint": "south wall west of center, away from stair opening",
            "base_layer_decision": "base_persistent_fixture",
            "render_role": "not_applicable",
            "top_down_legibility": "not_applicable"
          }
        ],
        "transient_markers_to_describe": [
          {
            "number": 18,
            "label": "Powered refuge state",
            "category": "prop",
            "position_hint": "operating state of radio 13 and lantern stations 14 through 17; overlay only",
            "base_layer_decision": "state_overlay_plot_cue",
            "render_role": "not_applicable",
            "top_down_legibility": "not_applicable"
          }
        ],
        "ignored_state_overlay_markers": [
          {
            "number": 19,
            "label": "Handheld escape flashlight",
            "category": "prop",
            "position_hint": "carried along central route toward doorway 5 during urgent departure; overlay only",
            "base_layer_decision": "state_overlay_transient_object",
            "render_role": "not_applicable",
            "top_down_legibility": "not_applicable"
          },
          {
            "number": 20,
            "label": "Dark passage beyond doorway",
            "category": "area",
            "position_hint": "passage 4 beyond doorway 5 during escape preparation; overlay only",
            "base_layer_decision": "state_overlay_plot_cue",
            "render_role": "not_applicable",
            "top_down_legibility": "not_applicable"
          }
        ],
        "target_unit_marker_numbers": [
          1,
          2
        ],
        "dominant_target_unit_marker_number": null,
        "clean_background_expected": false,
        "diagnostics": [
          "multiple base_structural_unit markers in use_numbered_elements ([1, 2]); dominant_target_unit_marker_number left empty (W19B-1 lock — no lexical disambiguation)"
        ]
      },
      "L36B02": {
        "bg_id": "L36B02",
        "fp_id": "fp_church_prayer_room",
        "use_numbered_elements": [
          1,
          4,
          5,
          7,
          8,
          9,
          10,
          16,
          18,
          19,
          20
        ],
        "ignore_numbered_elements": [],
        "base_markers_to_reference": [
          {
            "number": 1,
            "label": "Prayer room",
            "category": "area",
            "position_hint": "main rectangular interior",
            "base_layer_decision": "base_structural_unit",
            "render_role": "not_applicable",
            "top_down_legibility": "not_applicable"
          },
          {
            "number": 4,
            "label": "Escape passage",
            "category": "area",
            "position_hint": "outside southeast portion of east wall; only adjoining stub shown",
            "base_layer_decision": "base_structural_unit",
            "render_role": "not_applicable",
            "top_down_legibility": "not_applicable"
          },
          {
            "number": 5,
            "label": "Escape doorway",
            "category": "opening",
            "position_hint": "southeast portion of east wall, connecting room to passage",
            "base_layer_decision": "base_opening",
            "render_role": "not_applicable",
            "top_down_legibility": "not_applicable"
          },
          {
            "number": 7,
            "label": "Small table",
            "category": "furniture",
            "position_hint": "east-central room, north of escape circulation route",
            "base_layer_decision": "base_persistent_furniture",
            "render_role": "not_applicable",
            "top_down_legibility": "not_applicable"
          },
          {
            "number": 8,
            "label": "North chair",
            "category": "furniture",
            "position_hint": "north side of table",
            "base_layer_decision": "base_persistent_furniture",
            "render_role": "not_applicable",
            "top_down_legibility": "not_applicable"
          },
          {
            "number": 9,
            "label": "East chair",
            "category": "furniture",
            "position_hint": "east side of table",
            "base_layer_decision": "base_persistent_furniture",
            "render_role": "not_applicable",
            "top_down_legibility": "not_applicable"
          },
          {
            "number": 10,
            "label": "South chair",
            "category": "furniture",
            "position_hint": "south side of table, clear of escape route",
            "base_layer_decision": "base_persistent_furniture",
            "render_role": "not_applicable",
            "top_down_legibility": "not_applicable"
          },
          {
            "number": 16,
            "label": "East lantern station",
            "category": "prop",
            "position_hint": "east wall north of escape doorway",
            "base_layer_decision": "base_persistent_fixture",
            "render_role": "not_applicable",
            "top_down_legibility": "not_applicable"
          }
        ],
        "transient_markers_to_describe": [
          {
            "number": 18,
            "label": "Powered refuge state",
            "category": "prop",
            "position_hint": "operating state of radio 13 and lantern stations 14 through 17; overlay only",
            "base_layer_decision": "state_overlay_plot_cue",
            "render_role": "not_applicable",
            "top_down_legibility": "not_applicable"
          },
          {
            "number": 19,
            "label": "Handheld escape flashlight",
            "category": "prop",
            "position_hint": "carried along central route toward doorway 5 during urgent departure; overlay only",
            "base_layer_decision": "state_overlay_transient_object",
            "render_role": "not_applicable",
            "top_down_legibility": "not_applicable"
          },
          {
            "number": 20,
            "label": "Dark passage beyond doorway",
            "category": "area",
            "position_hint": "passage 4 beyond doorway 5 during escape preparation; overlay only",
            "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
        ],
        "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)"
        ]
      },
      "L44B03": {
        "bg_id": "L44B03",
        "fp_id": "fp_miyeon_confinement_room",
        "use_numbered_elements": [
          1,
          3,
          4,
          5,
          6,
          10
        ],
        "ignore_numbered_elements": [
          11,
          12,
          13,
          14,
          15
        ],
        "base_markers_to_reference": [
          {
            "number": 1,
            "label": "Confinement room",
            "category": "area",
            "position_hint": "Upper main rectangle, north of the corridor",
            "base_layer_decision": "base_structural_unit",
            "render_role": "not_applicable",
            "top_down_legibility": "not_applicable"
          },
          {
            "number": 3,
            "label": "Clear exit strip",
            "category": "area",
            "position_hint": "East side of the room, connecting the seating area to the southeast door",
            "base_layer_decision": "base_structural_unit",
            "render_role": "not_applicable",
            "top_down_legibility": "not_applicable"
          },
          {
            "number": 4,
            "label": "Iron entrance door",
            "category": "opening",
            "position_hint": "South wall of the room near its east corner, opening outward into a recessed corridor threshold",
            "base_layer_decision": "base_opening",
            "render_role": "not_applicable",
            "top_down_legibility": "not_applicable"
          },
          {
            "number": 5,
            "label": "Captive chair",
            "category": "furniture",
            "position_hint": "West-central room, north of the opposing chair, facing south",
            "base_layer_decision": "base_persistent_furniture",
            "render_role": "not_applicable",
            "top_down_legibility": "not_applicable"
          },
          {
            "number": 6,
            "label": "Questioning chair",
            "category": "furniture",
            "position_hint": "West-central room, south of the captive chair, facing north",
            "base_layer_decision": "base_persistent_furniture",
            "render_role": "not_applicable",
            "top_down_legibility": "not_applicable"
          },
          {
            "number": 10,
            "label": "Door handle assembly",
            "category": "prop",
            "position_hint": "Latch edge of the iron entrance door, opposite its east hinge",
            "base_layer_decision": "base_persistent_fixture",
            "render_role": "not_applicable",
            "top_down_legibility": "not_applicable"
          }
        ],
        "transient_markers_to_describe": [],
        "ignored_state_overlay_markers": [
          {
            "number": 11,
            "label": "Broken handle and opened door state",
            "category": "prop",
            "position_hint": "At the handle assembly and entrance threshold; apply after the successful rescue strikes",
            "base_layer_decision": "state_overlay_plot_cue",
            "render_role": "not_applicable",
            "top_down_legibility": "not_applicable"
          },
          {
            "number": 12,
            "label": "Rescue fire extinguisher",
            "category": "prop",
            "position_hint": "Retrieved from the corridor storage corner and carried to the entrance handle during rescue",
            "base_layer_decision": "state_overlay_transient_object",
            "render_role": "not_applicable",
            "top_down_legibility": "not_applicable"
          },
          {
            "number": 13,
            "label": "Approaching dark surge",
            "category": "prop",
            "position_hint": "Outside the east corridor window, visible through intact glazing before impact",
            "base_layer_decision": "state_overlay_plot_cue",
            "render_role": "not_applicable",
            "top_down_legibility": "not_applicable"
          },
          {
            "number": 14,
            "label": "Shattered glazing and fragments",
            "category": "prop",
            "position_hint": "At the east corridor window and immediately inside its bay, impact phase only",
            "base_layer_decision": "state_overlay_plot_cue",
            "render_role": "not_applicable",
            "top_down_legibility": "not_applicable"
          },
          {
            "number": 15,
            "label": "Incoming seawater",
            "category": "prop",
            "position_hint": "Entering the corridor window bay from the east after window impact",
            "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": true,
        "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)"
        ]
      },
      "L44B01": {
        "bg_id": "L44B01",
        "fp_id": "fp_miyeon_confinement_room",
        "use_numbered_elements": [
          1,
          2,
          3,
          4,
          5,
          6,
          9,
          10,
          11,
          12
        ],
        "ignore_numbered_elements": [
          13,
          14,
          15
        ],
        "base_markers_to_reference": [
          {
            "number": 1,
            "label": "Confinement room",
            "category": "area",
            "position_hint": "Upper main rectangle, north of the corridor",
            "base_layer_decision": "base_structural_unit",
            "render_role": "not_applicable",
            "top_down_legibility": "not_applicable"
          },
          {
            "number": 2,
            "label": "Corridor and window bay",
            "category": "area",
            "position_hint": "Horizontal strip south of the room, terminating at the east window",
            "base_layer_decision": "base_structural_unit",
            "render_role": "not_applicable",
            "top_down_legibility": "not_applicable"
          },
          {
            "number": 3,
            "label": "Clear exit strip",
            "category": "area",
            "position_hint": "East side of the room, connecting the seating area to the southeast door",
            "base_layer_decision": "base_structural_unit",
            "render_role": "not_applicable",
            "top_down_legibility": "not_applicable"
          },
          {
            "number": 4,
            "label": "Iron entrance door",
            "category": "opening",
            "position_hint": "South wall of the room near its east corner, opening outward into a recessed corridor threshold",
            "base_layer_decision": "base_opening",
            "render_role": "not_applicable",
            "top_down_legibility": "not_applicable"
          },
          {
            "number": 5,
            "label": "Captive chair",
            "category": "furniture",
            "position_hint": "West-central room, north of the opposing chair, facing south",
            "base_layer_decision": "base_persistent_furniture",
            "render_role": "not_applicable",
            "top_down_legibility": "not_applicable"
          },
          {
            "number": 6,
            "label": "Questioning chair",
            "category": "furniture",
            "position_hint": "West-central room, south of the captive chair, facing north",
            "base_layer_decision": "base_persistent_furniture",
            "render_role": "not_applicable",
            "top_down_legibility": "not_applicable"
          },
          {
            "number": 9,
            "label": "Equipment-storage corner",
            "category": "area",
            "position_hint": "Southwest corridor corner, outside the confinement room",
            "base_layer_decision": "base_structural_unit",
            "render_role": "not_applicable",
            "top_down_legibility": "not_applicable"
          },
          {
            "number": 10,
            "label": "Door handle assembly",
            "category": "prop",
            "position_hint": "Latch edge of the iron entrance door, opposite its east hinge",
            "base_layer_decision": "base_persistent_fixture",
            "render_role": "not_applicable",
            "top_down_legibility": "not_applicable"
          }
        ],
        "transient_markers_to_describe": [
          {
            "number": 11,
            "label": "Broken handle and opened door state",
            "category": "prop",
            "position_hint": "At the handle assembly and entrance threshold; apply after the successful rescue strikes",
            "base_layer_decision": "state_overlay_plot_cue",
            "render_role": "not_applicable",
            "top_down_legibility": "not_applicable"
          },
          {
            "number": 12,
            "label": "Rescue fire extinguisher",
            "category": "prop",
            "position_hint": "Retrieved from the corridor storage corner and carried to the entrance handle during rescue",
            "base_layer_decision": "state_overlay_transient_object",
            "render_role": "not_applicable",
            "top_down_legibility": "not_applicable"
          }
        ],
        "ignored_state_overlay_markers": [
          {
            "number": 13,
            "label": "Approaching dark surge",
            "category": "prop",
            "position_hint": "Outside the east corridor window, visible through intact glazing before impact",
            "base_layer_decision": "state_overlay_plot_cue",
            "render_role": "not_applicable",
            "top_down_legibility": "not_applicable"
          },
          {
            "number": 14,
            "label": "Shattered glazing and fragments",
            "category": "prop",
            "position_hint": "At the east corridor window and immediately inside its bay, impact phase only",
            "base_layer_decision": "state_overlay_plot_cue",
            "render_role": "not_applicable",
            "top_down_legibility": "not_applicable"
          },
          {
            "number": 15,
            "label": "Incoming seawater",
            "category": "prop",
            "position_hint": "Entering the corridor window bay from the east after window impact",
            "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)"
        ]
      },
      "L44B02": {
        "bg_id": "L44B02",
        "fp_id": "fp_miyeon_confinement_room",
        "use_numbered_elements": [
          2,
          7,
          13,
          14,
          15
        ],
        "ignore_numbered_elements": [
          11,
          12
        ],
        "base_markers_to_reference": [
          {
            "number": 2,
            "label": "Corridor and window bay",
            "category": "area",
            "position_hint": "Horizontal strip south of the room, terminating at the east window",
            "base_layer_decision": "base_structural_unit",
            "render_role": "not_applicable",
            "top_down_legibility": "not_applicable"
          },
          {
            "number": 7,
            "label": "Exterior corridor window",
            "category": "opening",
            "position_hint": "East end wall of the adjoining corridor window bay",
            "base_layer_decision": "base_opening",
            "render_role": "not_applicable",
            "top_down_legibility": "not_applicable"
          }
        ],
        "transient_markers_to_describe": [
          {
            "number": 13,
            "label": "Approaching dark surge",
            "category": "prop",
            "position_hint": "Outside the east corridor window, visible through intact glazing before impact",
            "base_layer_decision": "state_overlay_plot_cue",
            "render_role": "not_applicable",
            "top_down_legibility": "not_applicable"
          },
          {
            "number": 14,
            "label": "Shattered glazing and fragments",
            "category": "prop",
            "position_hint": "At the east corridor window and immediately inside its bay, impact phase only",
            "base_layer_decision": "state_overlay_plot_cue",
            "render_role": "not_applicable",
            "top_down_legibility": "not_applicable"
          },
          {
            "number": 15,
            "label": "Incoming seawater",
            "category": "prop",
            "position_hint": "Entering the corridor window bay from the east after window impact",
            "base_layer_decision": "state_overlay_plot_cue",
            "render_role": "not_applicable",
            "top_down_legibility": "not_applicable"
          }
        ],
        "ignored_state_overlay_markers": [
          {
            "number": 11,
            "label": "Broken handle and opened door state",
            "category": "prop",
            "position_hint": "At the handle assembly and entrance threshold; apply after the successful rescue strikes",
            "base_layer_decision": "state_overlay_plot_cue",
            "render_role": "not_applicable",
            "top_down_legibility": "not_applicable"
          },
          {
            "number": 12,
            "label": "Rescue fire extinguisher",
            "category": "prop",
            "position_hint": "Retrieved from the corridor storage corner and carried to the entrance handle during rescue",
            "base_layer_decision": "state_overlay_transient_object",
            "render_role": "not_applicable",
            "top_down_legibility": "not_applicable"
          }
        ],
        "target_unit_marker_numbers": [
          2
        ],
        "dominant_target_unit_marker_number": 2,
        "clean_background_expected": false,
        "diagnostics": []
      },
      "L48B01": {
        "bg_id": "L48B01",
        "fp_id": "fp_floating_container_plank",
        "use_numbered_elements": [
          1,
          2,
          3,
          4,
          5,
          6,
          7
        ],
        "ignore_numbered_elements": [],
        "base_markers_to_reference": [
          {
            "number": 1,
            "label": "Floating plank",
            "category": "area",
            "position_hint": "Central elongated rectangle; long axis runs page-up to page-down, with marker near its lower end.",
            "base_layer_decision": "base_structural_unit",
            "render_role": "not_applicable",
            "top_down_legibility": "not_applicable"
          },
          {
            "number": 2,
            "label": "Surrounding seawater",
            "category": "area",
            "position_hint": "Continuous exterior area surrounding every edge of number 1.",
            "base_layer_decision": "base_structural_unit",
            "render_role": "not_applicable",
            "top_down_legibility": "not_applicable"
          }
        ],
        "transient_markers_to_describe": [
          {
            "number": 3,
            "label": "Reclining adult position",
            "category": "area",
            "position_hint": "Center-left of number 1, aligned with its long axis; head toward page-up and feet toward page-down. Overlay-only blocking reference, not a physical partition.",
            "base_layer_decision": "state_overlay_plot_cue",
            "render_role": "not_applicable",
            "top_down_legibility": "not_applicable"
          },
          {
            "number": 4,
            "label": "Embracing adult position",
            "category": "area",
            "position_hint": "Immediately right of number 3 at upper-torso level, with room to crouch and lean left into an embrace while remaining on number 1.",
            "base_layer_decision": "state_overlay_plot_cue",
            "render_role": "not_applicable",
            "top_down_legibility": "not_applicable"
          },
          {
            "number": 5,
            "label": "Standing companion position",
            "category": "area",
            "position_hint": "Right side of number 1, beside number 4, with standing clearance inside the plank perimeter.",
            "base_layer_decision": "state_overlay_plot_cue",
            "render_role": "not_applicable",
            "top_down_legibility": "not_applicable"
          },
          {
            "number": 6,
            "label": "Abdominal bleeding",
            "category": "prop",
            "position_hint": "At the abdomen of the reclining adult associated with number 3; restrained injury cue attached to the person, not a permanent platform feature.",
            "base_layer_decision": "state_overlay_plot_cue",
            "render_role": "not_applicable",
            "top_down_legibility": "not_applicable"
          },
          {
            "number": 7,
            "label": "Blood contact stain",
            "category": "prop",
            "position_hint": "Localized surface contact area beneath and immediately beside the abdomen at number 3; spatially aligned with number 6.",
            "base_layer_decision": "state_overlay_plot_cue",
            "render_role": "not_applicable",
            "top_down_legibility": "not_applicable"
          }
        ],
        "ignored_state_overlay_markers": [],
        "target_unit_marker_numbers": [
          1,
          2
        ],
        "dominant_target_unit_marker_number": null,
        "clean_background_expected": false,
        "diagnostics": [
          "multiple base_structural_unit markers in use_numbered_elements ([1, 2]); dominant_target_unit_marker_number left empty (W19B-1 lock — no lexical disambiguation)"
        ]
      },
      "L50B01": {
        "bg_id": "L50B01",
        "fp_id": "fp_store_approach",
        "use_numbered_elements": [
          1,
          2,
          3,
          4,
          5,
          6,
          7,
          8,
          9
        ],
        "ignore_numbered_elements": [],
        "base_markers_to_reference": [
          {
            "number": 1,
            "label": "Road",
            "category": "area",
            "position_hint": "central horizontal strip between the two pedestrian edges",
            "base_layer_decision": "base_structural_unit",
            "render_role": "not_applicable",
            "top_down_legibility": "not_applicable"
          },
          {
            "number": 2,
            "label": "Near-side pedestrian verge",
            "category": "area",
            "position_hint": "south side of the road, continuous from left to right",
            "base_layer_decision": "base_structural_unit",
            "render_role": "not_applicable",
            "top_down_legibility": "not_applicable"
          },
          {
            "number": 3,
            "label": "Store-front apron",
            "category": "area",
            "position_hint": "north side of the road, directly before the store",
            "base_layer_decision": "base_structural_unit",
            "render_role": "not_applicable",
            "top_down_legibility": "not_applicable"
          },
          {
            "number": 4,
            "label": "Store envelope",
            "category": "area",
            "position_hint": "north of the apron, slightly east of plan center",
            "base_layer_decision": "base_structural_unit",
            "render_role": "not_applicable",
            "top_down_legibility": "not_applicable"
          },
          {
            "number": 5,
            "label": "Store entrance",
            "category": "opening",
            "position_hint": "western portion of the store's south-facing wall",
            "base_layer_decision": "base_opening",
            "render_role": "not_applicable",
            "top_down_legibility": "not_applicable"
          },
          {
            "number": 6,
            "label": "Storefront window",
            "category": "opening",
            "position_hint": "south-facing store wall, east of the entrance",
            "base_layer_decision": "base_opening",
            "render_role": "not_applicable",
            "top_down_legibility": "not_applicable"
          },
          {
            "number": 7,
            "label": "Camp-side approach",
            "category": "area",
            "position_hint": "western open end of the road; camp remains off-plan",
            "base_layer_decision": "base_structural_unit",
            "render_role": "not_applicable",
            "top_down_legibility": "not_applicable"
          },
          {
            "number": 8,
            "label": "Cityward continuation",
            "category": "area",
            "position_hint": "eastern open end of the road; city remains off-plan",
            "base_layer_decision": "base_structural_unit",
            "render_role": "not_applicable",
            "top_down_legibility": "not_applicable"
          },
          {
            "number": 9,
            "label": "Road-facing frontage",
            "category": "area",
            "position_hint": "south boundary of the store envelope, adjoining the apron",
            "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,
          7,
          8,
          9
        ],
        "dominant_target_unit_marker_number": null,
        "clean_background_expected": true,
        "diagnostics": [
          "multiple base_structural_unit markers in use_numbered_elements ([1, 2, 3, 4, 7, 8, 9]); dominant_target_unit_marker_number left empty (W19B-1 lock — no lexical disambiguation)"
        ]
      },
      "L51B01": {
        "bg_id": "L51B01",
        "fp_id": "fp_unattended_store",
        "use_numbered_elements": [
          1,
          2,
          3,
          4,
          5,
          6,
          7,
          8,
          9,
          10,
          11,
          12,
          13,
          14,
          15
        ],
        "ignore_numbered_elements": [],
        "base_markers_to_reference": [
          {
            "number": 1,
            "label": "Main retail floor",
            "category": "area",
            "position_hint": "central shop floor, including merchandise circulation 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": "southwest interior, directly inside the south-wall entrance",
            "base_layer_decision": "base_structural_unit",
            "render_role": "not_applicable",
            "top_down_legibility": "not_applicable"
          },
          {
            "number": 3,
            "label": "Medicine corner",
            "category": "area",
            "position_hint": "northeast corner of the shop",
            "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": "northwest corner, including clear floor south of the ATM",
            "base_layer_decision": "base_structural_unit",
            "render_role": "not_applicable",
            "top_down_legibility": "not_applicable"
          },
          {
            "number": 5,
            "label": "Rear hiding recess",
            "category": "area",
            "position_hint": "rear cross-aisle north of shelf 8, between the ATM bay and medicine corner",
            "base_layer_decision": "base_structural_unit",
            "render_role": "not_applicable",
            "top_down_legibility": "not_applicable"
          },
          {
            "number": 6,
            "label": "Footwear display",
            "category": "furniture",
            "position_hint": "west wall near the entrance, outside the door swing",
            "base_layer_decision": "base_persistent_furniture",
            "render_role": "not_applicable",
            "top_down_legibility": "not_applicable"
          },
          {
            "number": 7,
            "label": "Bags and supplies shelf",
            "category": "furniture",
            "position_hint": "southern central floor, long axis east-west",
            "base_layer_decision": "base_persistent_furniture",
            "render_role": "not_applicable",
            "top_down_legibility": "not_applicable"
          },
          {
            "number": 8,
            "label": "Food and toy shelf",
            "category": "furniture",
            "position_hint": "northern central floor, parallel to shelf 7 and south of the hiding recess",
            "base_layer_decision": "base_persistent_furniture",
            "render_role": "not_applicable",
            "top_down_legibility": "not_applicable"
          },
          {
            "number": 9,
            "label": "Medicine shelving",
            "category": "furniture",
            "position_hint": "against the wall in the northeast medicine corner",
            "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 north wall in the northwest bay, operating panel facing south",
            "base_layer_decision": "base_persistent_fixture",
            "render_role": "not_applicable",
            "top_down_legibility": "not_applicable"
          },
          {
            "number": 11,
            "label": "Blanket display",
            "category": "furniture",
            "position_hint": "north wall immediately east of the ATM, outside its working clearance",
            "base_layer_decision": "base_persistent_furniture",
            "render_role": "not_applicable",
            "top_down_legibility": "not_applicable"
          },
          {
            "number": 12,
            "label": "Shop entrance door",
            "category": "opening",
            "position_hint": "south wall near the southwest corner",
            "base_layer_decision": "base_opening",
            "render_role": "not_applicable",
            "top_down_legibility": "not_applicable"
          }
        ],
        "transient_markers_to_describe": [
          {
            "number": 13,
            "label": "Localized ATM panel breach",
            "category": "prop",
            "position_hint": "south-facing front panel of ATM 10; confined to the machine rather than surrounding architecture",
            "base_layer_decision": "state_overlay_plot_cue",
            "render_role": "not_applicable",
            "top_down_legibility": "not_applicable"
          },
          {
            "number": 14,
            "label": "Remaining cash traces",
            "category": "prop",
            "position_hint": "at the breached ATM opening and on the immediately adjacent floor within bay 4",
            "base_layer_decision": "state_overlay_transient_object",
            "render_role": "not_applicable",
            "top_down_legibility": "not_applicable"
          },
          {
            "number": 15,
            "label": "Picked-over merchandise gaps",
            "category": "prop",
            "position_hint": "localized stock gaps on displays 6, 7, 8, 9, and 11; shelf structures remain standing",
            "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)"
        ]
      },
      "L52B01": {
        "bg_id": "L52B01",
        "fp_id": "fp_defense_minister_office",
        "use_numbered_elements": [
          1,
          2,
          3,
          6,
          7,
          8,
          9,
          10,
          11,
          12
        ],
        "ignore_numbered_elements": [],
        "base_markers_to_reference": [
          {
            "number": 1,
            "label": "Office enclosure",
            "category": "area",
            "position_hint": "entire rectangular room; marker just inside the eastern perimeter",
            "base_layer_decision": "base_structural_unit",
            "render_role": "not_applicable",
            "top_down_legibility": "not_applicable"
          },
          {
            "number": 2,
            "label": "Private work zone",
            "category": "area",
            "position_hint": "northern portion of the office surrounding the executive desk",
            "base_layer_decision": "base_structural_unit",
            "render_role": "not_applicable",
            "top_down_legibility": "not_applicable"
          },
          {
            "number": 3,
            "label": "Visitor zone",
            "category": "area",
            "position_hint": "central and southeastern floor area south of the desk",
            "base_layer_decision": "base_structural_unit",
            "render_role": "not_applicable",
            "top_down_legibility": "not_applicable"
          },
          {
            "number": 6,
            "label": "Broad window",
            "category": "opening",
            "position_hint": "center of the north wall behind the executive chair",
            "base_layer_decision": "base_opening",
            "render_role": "not_applicable",
            "top_down_legibility": "not_applicable"
          },
          {
            "number": 7,
            "label": "Executive desk",
            "category": "furniture",
            "position_hint": "northern half of the room; long axis east-west",
            "base_layer_decision": "base_persistent_furniture",
            "render_role": "not_applicable",
            "top_down_legibility": "not_applicable"
          },
          {
            "number": 8,
            "label": "Executive chair",
            "category": "furniture",
            "position_hint": "north of the desk, facing south",
            "base_layer_decision": "base_persistent_furniture",
            "render_role": "not_applicable",
            "top_down_legibility": "not_applicable"
          },
          {
            "number": 9,
            "label": "West visitor chair",
            "category": "furniture",
            "position_hint": "south of the western half of the desk, facing north",
            "base_layer_decision": "base_persistent_furniture",
            "render_role": "not_applicable",
            "top_down_legibility": "not_applicable"
          },
          {
            "number": 10,
            "label": "East visitor chair",
            "category": "furniture",
            "position_hint": "south of the eastern half of the desk, facing north",
            "base_layer_decision": "base_persistent_furniture",
            "render_role": "not_applicable",
            "top_down_legibility": "not_applicable"
          },
          {
            "number": 11,
            "label": "Storage credenza",
            "category": "furniture",
            "position_hint": "against the east wall within the northern work zone",
            "base_layer_decision": "base_persistent_furniture",
            "render_role": "not_applicable",
            "top_down_legibility": "not_applicable"
          },
          {
            "number": 12,
            "label": "Circulation strip",
            "category": "area",
            "position_hint": "western side of the room, linking the threshold and private work zone",
            "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,
          12
        ],
        "dominant_target_unit_marker_number": null,
        "clean_background_expected": true,
        "diagnostics": [
          "multiple base_structural_unit markers in use_numbered_elements ([1, 2, 3, 12]); dominant_target_unit_marker_number left empty (W19B-1 lock — no lexical disambiguation)"
        ]
      },
      "L54B03": {
        "bg_id": "L54B03",
        "fp_id": "fp_camper_cabin",
        "use_numbered_elements": [
          1,
          2,
          3,
          4,
          5,
          6,
          7,
          8,
          9,
          10,
          11,
          12,
          13,
          14,
          16,
          17
        ],
        "ignore_numbered_elements": [
          18,
          19,
          20,
          21
        ],
        "base_markers_to_reference": [
          {
            "number": 1,
            "label": "Front driving area",
            "category": "area",
            "position_hint": "Front third of the cabin; vehicle front is image top.",
            "base_layer_decision": "base_structural_unit",
            "render_role": "not_applicable",
            "top_down_legibility": "not_applicable"
          },
          {
            "number": 2,
            "label": "Rear shared seating area",
            "category": "area",
            "position_hint": "Middle and rear cabin, continuously connected to the front seats.",
            "base_layer_decision": "base_structural_unit",
            "render_role": "not_applicable",
            "top_down_legibility": "not_applicable"
          },
          {
            "number": 3,
            "label": "Luggage floor area",
            "category": "area",
            "position_hint": "Rear-left floor immediately forward of the left end of number 6.",
            "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, facing number 9.",
            "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, facing number 9.",
            "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 rear end of number 2, facing forward.",
            "base_layer_decision": "base_persistent_furniture",
            "render_role": "not_applicable",
            "top_down_legibility": "not_applicable"
          },
          {
            "number": 7,
            "label": "Dashboard",
            "category": "prop",
            "position_hint": "Across the front interior, between number 9 and the front seats.",
            "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 number 7, directly ahead of number 4.",
            "base_layer_decision": "base_persistent_fixture",
            "render_role": "not_applicable",
            "top_down_legibility": "not_applicable"
          },
          {
            "number": 9,
            "label": "Windshield",
            "category": "opening",
            "position_hint": "Front perimeter above number 7.",
            "base_layer_decision": "base_opening",
            "render_role": "not_applicable",
            "top_down_legibility": "not_applicable"
          },
          {
            "number": 10,
            "label": "Driver door",
            "category": "opening",
            "position_hint": "Left front perimeter beside number 4; outward swing.",
            "base_layer_decision": "base_opening",
            "render_role": "not_applicable",
            "top_down_legibility": "not_applicable"
          },
          {
            "number": 11,
            "label": "Passenger door",
            "category": "opening",
            "position_hint": "Right front perimeter beside number 5; outward swing.",
            "base_layer_decision": "base_opening",
            "render_role": "not_applicable",
            "top_down_legibility": "not_applicable"
          },
          {
            "number": 12,
            "label": "Driver door window",
            "category": "opening",
            "position_hint": "Within number 10 on the left front perimeter.",
            "base_layer_decision": "base_opening",
            "render_role": "not_applicable",
            "top_down_legibility": "not_applicable"
          },
          {
            "number": 13,
            "label": "Passenger door window",
            "category": "opening",
            "position_hint": "Within number 11 on the right front perimeter.",
            "base_layer_decision": "base_opening",
            "render_role": "not_applicable",
            "top_down_legibility": "not_applicable"
          },
          {
            "number": 14,
            "label": "Left rear side window",
            "category": "opening",
            "position_hint": "Left perimeter of number 2, above the luggage-side floor area.",
            "base_layer_decision": "base_opening",
            "render_role": "not_applicable",
            "top_down_legibility": "not_applicable"
          },
          {
            "number": 16,
            "label": "Rear ceiling lamp",
            "category": "prop",
            "position_hint": "Overhead in number 2, above the aisle just forward of number 6; projected symbol only.",
            "base_layer_decision": "base_persistent_fixture",
            "render_role": "not_applicable",
            "top_down_legibility": "not_applicable"
          }
        ],
        "transient_markers_to_describe": [
          {
            "number": 17,
            "label": "Carried luggage bags",
            "category": "prop",
            "position_hint": "On number 3, within reach from the middle cabin; loose carried objects, not built-in storage.",
            "base_layer_decision": "state_overlay_transient_object",
            "render_role": "not_applicable",
            "top_down_legibility": "not_applicable"
          }
        ],
        "ignored_state_overlay_markers": [
          {
            "number": 18,
            "label": "Active roof leakage",
            "category": "prop",
            "position_hint": "Several overhead points across the middle and rear cabin, including a reachable point just behind number 5.",
            "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": "Rear side window frames at numbers 14 and 15, with the principal reachable blocking position at number 15.",
            "base_layer_decision": "state_overlay_plot_cue",
            "render_role": "not_applicable",
            "top_down_legibility": "not_applicable"
          },
          {
            "number": 20,
            "label": "Roof-blocking clothing",
            "category": "prop",
            "position_hint": "Removed from number 17 and held against the overhead leak just behind number 5.",
            "base_layer_decision": "state_overlay_transient_object",
            "render_role": "not_applicable",
            "top_down_legibility": "not_applicable"
          },
          {
            "number": 21,
            "label": "Window-blocking clothing",
            "category": "prop",
            "position_hint": "Held against the inner frame of number 15 in the rear shared area.",
            "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)"
        ]
      },
      "L54B01": {
        "bg_id": "L54B01",
        "fp_id": "fp_camper_cabin",
        "use_numbered_elements": [
          2,
          3,
          5,
          6,
          14,
          15,
          16,
          17,
          18,
          19,
          20,
          21
        ],
        "ignore_numbered_elements": [],
        "base_markers_to_reference": [
          {
            "number": 2,
            "label": "Rear shared seating area",
            "category": "area",
            "position_hint": "Middle and rear cabin, continuously connected to the front seats.",
            "base_layer_decision": "base_structural_unit",
            "render_role": "not_applicable",
            "top_down_legibility": "not_applicable"
          },
          {
            "number": 3,
            "label": "Luggage floor area",
            "category": "area",
            "position_hint": "Rear-left floor immediately forward of the left end of number 6.",
            "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, facing number 9.",
            "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 rear end of number 2, facing forward.",
            "base_layer_decision": "base_persistent_furniture",
            "render_role": "not_applicable",
            "top_down_legibility": "not_applicable"
          },
          {
            "number": 14,
            "label": "Left rear side window",
            "category": "opening",
            "position_hint": "Left perimeter of number 2, above the luggage-side floor area.",
            "base_layer_decision": "base_opening",
            "render_role": "not_applicable",
            "top_down_legibility": "not_applicable"
          },
          {
            "number": 15,
            "label": "Right rear side window",
            "category": "opening",
            "position_hint": "Right perimeter of number 2, accessible from the open aisle.",
            "base_layer_decision": "base_opening",
            "render_role": "not_applicable",
            "top_down_legibility": "not_applicable"
          },
          {
            "number": 16,
            "label": "Rear ceiling lamp",
            "category": "prop",
            "position_hint": "Overhead in number 2, above the aisle just forward of number 6; projected symbol only.",
            "base_layer_decision": "base_persistent_fixture",
            "render_role": "not_applicable",
            "top_down_legibility": "not_applicable"
          }
        ],
        "transient_markers_to_describe": [
          {
            "number": 17,
            "label": "Carried luggage bags",
            "category": "prop",
            "position_hint": "On number 3, within reach from the middle cabin; loose carried objects, not built-in storage.",
            "base_layer_decision": "state_overlay_transient_object",
            "render_role": "not_applicable",
            "top_down_legibility": "not_applicable"
          },
          {
            "number": 18,
            "label": "Active roof leakage",
            "category": "prop",
            "position_hint": "Several overhead points across the middle and rear cabin, including a reachable point just behind number 5.",
            "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": "Rear side window frames at numbers 14 and 15, with the principal reachable blocking position at number 15.",
            "base_layer_decision": "state_overlay_plot_cue",
            "render_role": "not_applicable",
            "top_down_legibility": "not_applicable"
          },
          {
            "number": 20,
            "label": "Roof-blocking clothing",
            "category": "prop",
            "position_hint": "Removed from number 17 and held against the overhead leak just behind number 5.",
            "base_layer_decision": "state_overlay_transient_object",
            "render_role": "not_applicable",
            "top_down_legibility": "not_applicable"
          },
          {
            "number": 21,
            "label": "Window-blocking clothing",
            "category": "prop",
            "position_hint": "Held against the inner frame of number 15 in the rear shared area.",
            "base_layer_decision": "state_overlay_transient_object",
            "render_role": "not_applicable",
            "top_down_legibility": "not_applicable"
          }
        ],
        "ignored_state_overlay_markers": [],
        "target_unit_marker_numbers": [
          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)"
        ]
      },
      "L57B02": {
        "bg_id": "L57B02",
        "fp_id": "fp_l57_reading_room_stacks",
        "use_numbered_elements": [
          1,
          2,
          3,
          4,
          6,
          7,
          8,
          9,
          13
        ],
        "ignore_numbered_elements": [
          14,
          15,
          16
        ],
        "base_markers_to_reference": [
          {
            "number": 1,
            "label": "Shared reading floor",
            "category": "area",
            "position_hint": "center and southwest of the room, beyond the entrance",
            "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 interior immediately inside the south-wall door",
            "base_layer_decision": "base_structural_unit",
            "render_role": "not_applicable",
            "top_down_legibility": "not_applicable"
          },
          {
            "number": 3,
            "label": "Stack area",
            "category": "area",
            "position_hint": "north-center and east-center, including aisles between bookcases",
            "base_layer_decision": "base_structural_unit",
            "render_role": "not_applicable",
            "top_down_legibility": "not_applicable"
          },
          {
            "number": 4,
            "label": "Quiet sleeping corner",
            "category": "area",
            "position_hint": "northwest corner, west of the bookcase rows",
            "base_layer_decision": "base_structural_unit",
            "render_role": "not_applicable",
            "top_down_legibility": "not_applicable"
          },
          {
            "number": 6,
            "label": "Entry door",
            "category": "opening",
            "position_hint": "south wall near the west end, swinging inward into the threshold",
            "base_layer_decision": "base_opening",
            "render_role": "not_applicable",
            "top_down_legibility": "not_applicable"
          },
          {
            "number": 7,
            "label": "West bookcase",
            "category": "furniture",
            "position_hint": "west side of the stack area, oriented north-south",
            "base_layer_decision": "base_persistent_furniture",
            "render_role": "not_applicable",
            "top_down_legibility": "not_applicable"
          },
          {
            "number": 8,
            "label": "Middle bookcase",
            "category": "furniture",
            "position_hint": "middle of the stack area, parallel to the west bookcase",
            "base_layer_decision": "base_persistent_furniture",
            "render_role": "not_applicable",
            "top_down_legibility": "not_applicable"
          },
          {
            "number": 9,
            "label": "East bookcase",
            "category": "furniture",
            "position_hint": "east side of the stack area, leaving a clear aisle beside the east wall",
            "base_layer_decision": "base_persistent_furniture",
            "render_role": "not_applicable",
            "top_down_legibility": "not_applicable"
          }
        ],
        "transient_markers_to_describe": [
          {
            "number": 13,
            "label": "Temporary meal supplies",
            "category": "prop",
            "position_hint": "on the shared floor southwest of the bookcase ends, clear of the entrance route",
            "base_layer_decision": "state_overlay_transient_object",
            "render_role": "not_applicable",
            "top_down_legibility": "not_applicable"
          }
        ],
        "ignored_state_overlay_markers": [
          {
            "number": 14,
            "label": "Box and book bedding",
            "category": "prop",
            "position_hint": "within the northwest quiet corner",
            "base_layer_decision": "state_overlay_transient_object",
            "render_role": "not_applicable",
            "top_down_legibility": "not_applicable"
          },
          {
            "number": 15,
            "label": "Open reading book",
            "category": "prop",
            "position_hint": "at the south end of the aisle between the middle and east bookcases",
            "base_layer_decision": "state_overlay_transient_object",
            "render_role": "not_applicable",
            "top_down_legibility": "not_applicable"
          },
          {
            "number": 16,
            "label": "Localized blue page illumination",
            "category": "prop",
            "position_hint": "confined to the open book at number 15, not the surrounding room",
            "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)"
        ]
      },
      "L57B03": {
        "bg_id": "L57B03",
        "fp_id": "fp_l57_reading_room_stacks",
        "use_numbered_elements": [
          1,
          3,
          4,
          5,
          7,
          8,
          9,
          10,
          11,
          12,
          14,
          15,
          16
        ],
        "ignore_numbered_elements": [
          13
        ],
        "base_markers_to_reference": [
          {
            "number": 1,
            "label": "Shared reading floor",
            "category": "area",
            "position_hint": "center and southwest of the room, beyond the entrance",
            "base_layer_decision": "base_structural_unit",
            "render_role": "not_applicable",
            "top_down_legibility": "not_applicable"
          },
          {
            "number": 3,
            "label": "Stack area",
            "category": "area",
            "position_hint": "north-center and east-center, including aisles between bookcases",
            "base_layer_decision": "base_structural_unit",
            "render_role": "not_applicable",
            "top_down_legibility": "not_applicable"
          },
          {
            "number": 4,
            "label": "Quiet sleeping corner",
            "category": "area",
            "position_hint": "northwest corner, west of the bookcase rows",
            "base_layer_decision": "base_structural_unit",
            "render_role": "not_applicable",
            "top_down_legibility": "not_applicable"
          },
          {
            "number": 5,
            "label": "Computer area",
            "category": "area",
            "position_hint": "northeast corner, beyond the north ends of the bookcases",
            "base_layer_decision": "base_structural_unit",
            "render_role": "not_applicable",
            "top_down_legibility": "not_applicable"
          },
          {
            "number": 7,
            "label": "West bookcase",
            "category": "furniture",
            "position_hint": "west side of the stack area, oriented north-south",
            "base_layer_decision": "base_persistent_furniture",
            "render_role": "not_applicable",
            "top_down_legibility": "not_applicable"
          },
          {
            "number": 8,
            "label": "Middle bookcase",
            "category": "furniture",
            "position_hint": "middle of the stack area, parallel to the west bookcase",
            "base_layer_decision": "base_persistent_furniture",
            "render_role": "not_applicable",
            "top_down_legibility": "not_applicable"
          },
          {
            "number": 9,
            "label": "East bookcase",
            "category": "furniture",
            "position_hint": "east side of the stack area, leaving a clear aisle beside the east wall",
            "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 in the northeast computer area",
            "base_layer_decision": "base_persistent_furniture",
            "render_role": "not_applicable",
            "top_down_legibility": "not_applicable"
          },
          {
            "number": 11,
            "label": "Legacy desktop computer",
            "category": "prop",
            "position_hint": "on the computer desk in the northeast corner",
            "base_layer_decision": "base_persistent_fixture",
            "render_role": "not_applicable",
            "top_down_legibility": "not_applicable"
          },
          {
            "number": 12,
            "label": "Workstation chair",
            "category": "furniture",
            "position_hint": "immediately south of the computer desk",
            "base_layer_decision": "base_persistent_furniture",
            "render_role": "not_applicable",
            "top_down_legibility": "not_applicable"
          }
        ],
        "transient_markers_to_describe": [
          {
            "number": 14,
            "label": "Box and book bedding",
            "category": "prop",
            "position_hint": "within the northwest quiet corner",
            "base_layer_decision": "state_overlay_transient_object",
            "render_role": "not_applicable",
            "top_down_legibility": "not_applicable"
          },
          {
            "number": 15,
            "label": "Open reading book",
            "category": "prop",
            "position_hint": "at the south end of the aisle between the middle and east bookcases",
            "base_layer_decision": "state_overlay_transient_object",
            "render_role": "not_applicable",
            "top_down_legibility": "not_applicable"
          },
          {
            "number": 16,
            "label": "Localized blue page illumination",
            "category": "prop",
            "position_hint": "confined to the open book at number 15, not the surrounding room",
            "base_layer_decision": "state_overlay_plot_cue",
            "render_role": "not_applicable",
            "top_down_legibility": "not_applicable"
          }
        ],
        "ignored_state_overlay_markers": [
          {
            "number": 13,
            "label": "Temporary meal supplies",
            "category": "prop",
            "position_hint": "on the shared floor southwest of the bookcase ends, clear of the entrance route",
            "base_layer_decision": "state_overlay_transient_object",
            "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)"
        ]
      },
      "L58B01": {
        "bg_id": "L58B01",
        "fp_id": "fp_l58_corridor_corner",
        "use_numbered_elements": [
          1,
          2,
          3,
          5,
          6,
          7
        ],
        "ignore_numbered_elements": [],
        "base_markers_to_reference": [
          {
            "number": 1,
            "label": "Main corridor",
            "category": "area",
            "position_hint": "horizontal west-to-east circulation strip in the upper middle of the plan",
            "base_layer_decision": "base_structural_unit",
            "render_role": "not_applicable",
            "top_down_legibility": "not_applicable"
          },
          {
            "number": 2,
            "label": "Continuous mural-support wall",
            "category": "area",
            "position_hint": "uninterrupted north boundary of the main corridor",
            "base_layer_decision": "base_structural_unit",
            "render_role": "not_applicable",
            "top_down_legibility": "not_applicable"
          },
          {
            "number": 3,
            "label": "Recessed call corner",
            "category": "area",
            "position_hint": "southward recess at the eastern end of the corridor",
            "base_layer_decision": "base_structural_unit",
            "render_role": "not_applicable",
            "top_down_legibility": "not_applicable"
          },
          {
            "number": 5,
            "label": "Corner entrance",
            "category": "opening",
            "position_hint": "broad doorless mouth between the eastern corridor and the southward recess",
            "base_layer_decision": "base_opening",
            "render_role": "not_applicable",
            "top_down_legibility": "not_applicable"
          },
          {
            "number": 6,
            "label": "Corner return wall",
            "category": "area",
            "position_hint": "western edge of the recessed corner, joining the south corridor wall",
            "base_layer_decision": "base_structural_unit",
            "render_role": "not_applicable",
            "top_down_legibility": "not_applicable"
          }
        ],
        "transient_markers_to_describe": [
          {
            "number": 7,
            "label": "In-progress crayon mural",
            "category": "prop",
            "position_hint": "on the inward-facing surface of wall 2; a blue sea line leads eastward into a fuller scene of family and friends, a camping vehicle, marine life, and palm trees, all confined to the wall drawing",
            "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,
          6
        ],
        "dominant_target_unit_marker_number": null,
        "clean_background_expected": false,
        "diagnostics": [
          "multiple base_structural_unit markers in use_numbered_elements ([1, 2, 3, 6]); dominant_target_unit_marker_number left empty (W19B-1 lock — no lexical disambiguation)"
        ]
      },
      "L61B02": {
        "bg_id": "L61B02",
        "fp_id": "fp_l61_store_and_assigned_inserts",
        "use_numbered_elements": [
          1,
          2,
          3,
          4,
          5,
          6,
          7,
          8,
          9,
          10
        ],
        "ignore_numbered_elements": [
          11,
          12,
          13,
          14,
          15,
          16,
          17,
          18,
          19,
          20,
          21,
          22,
          23
        ],
        "base_markers_to_reference": [
          {
            "number": 1,
            "label": "Shared retail floor",
            "category": "area",
            "position_hint": "central open floor of left store block",
            "base_layer_decision": "base_structural_unit",
            "render_role": "not_applicable",
            "top_down_legibility": "not_applicable"
          },
          {
            "number": 2,
            "label": "Medicine area",
            "category": "area",
            "position_hint": "upper-right portion of store",
            "base_layer_decision": "base_structural_unit",
            "render_role": "not_applicable",
            "top_down_legibility": "not_applicable"
          },
          {
            "number": 3,
            "label": "Attendant area",
            "category": "area",
            "position_hint": "upper-left portion of store",
            "base_layer_decision": "base_structural_unit",
            "render_role": "not_applicable",
            "top_down_legibility": "not_applicable"
          },
          {
            "number": 4,
            "label": "Entrance threshold",
            "category": "area",
            "position_hint": "lower-left edge of store, immediately inside entrance",
            "base_layer_decision": "base_structural_unit",
            "render_role": "not_applicable",
            "top_down_legibility": "not_applicable"
          },
          {
            "number": 5,
            "label": "Store entrance door",
            "category": "opening",
            "position_hint": "lower wall of store near left corner",
            "base_layer_decision": "base_opening",
            "render_role": "not_applicable",
            "top_down_legibility": "not_applicable"
          },
          {
            "number": 6,
            "label": "Medicine shelving",
            "category": "furniture",
            "position_hint": "right wall of store within medicine area",
            "base_layer_decision": "base_persistent_furniture",
            "render_role": "not_applicable",
            "top_down_legibility": "not_applicable"
          },
          {
            "number": 7,
            "label": "General merchandise shelving",
            "category": "furniture",
            "position_hint": "lower-right store floor, leaving central aisle clear",
            "base_layer_decision": "base_persistent_furniture",
            "render_role": "not_applicable",
            "top_down_legibility": "not_applicable"
          },
          {
            "number": 8,
            "label": "Attendant table",
            "category": "furniture",
            "position_hint": "upper-left store area, below television",
            "base_layer_decision": "base_persistent_furniture",
            "render_role": "not_applicable",
            "top_down_legibility": "not_applicable"
          },
          {
            "number": 9,
            "label": "Television",
            "category": "prop",
            "position_hint": "upper store wall immediately above attendant table",
            "base_layer_decision": "base_persistent_fixture",
            "render_role": "not_applicable",
            "top_down_legibility": "not_applicable"
          },
          {
            "number": 10,
            "label": "Corner convex mirror",
            "category": "prop",
            "position_hint": "upper-right store corner, addressing aisle and entrance approach",
            "base_layer_decision": "base_persistent_fixture",
            "render_role": "not_applicable",
            "top_down_legibility": "not_applicable"
          }
        ],
        "transient_markers_to_describe": [],
        "ignored_state_overlay_markers": [
          {
            "number": 20,
            "label": "Accident smoke",
            "category": "prop",
            "position_hint": "within overturned cockpit and adjoining cabin",
            "base_layer_decision": "state_overlay_plot_cue",
            "render_role": "not_applicable",
            "top_down_legibility": "not_applicable"
          },
          {
            "number": 21,
            "label": "Broken window glass",
            "category": "prop",
            "position_hint": "passenger-side window opening and adjacent overturned interior",
            "base_layer_decision": "state_overlay_transient_object",
            "render_role": "not_applicable",
            "top_down_legibility": "not_applicable"
          },
          {
            "number": 22,
            "label": "Dim bulb flicker",
            "category": "prop",
            "position_hint": "at interior bulb fixture number 19",
            "base_layer_decision": "state_overlay_plot_cue",
            "render_role": "not_applicable",
            "top_down_legibility": "not_applicable"
          },
          {
            "number": 23,
            "label": "Overturned vehicle orientation",
            "category": "area",
            "position_hint": "entire camper insert; roof below floor in accident background",
            "base_layer_decision": "state_overlay_plot_cue",
            "render_role": "not_applicable",
            "top_down_legibility": "not_applicable"
          }
        ],
        "target_unit_marker_numbers": [
          1,
          2,
          3,
          4
        ],
        "dominant_target_unit_marker_number": null,
        "clean_background_expected": true,
        "diagnostics": [
          "marker #11 in ignore_numbered_elements is a base layer marker ('base_structural_unit'); structural elements normally remain in use",
          "marker #12 in ignore_numbered_elements is a base layer marker ('base_structural_unit'); structural elements normally remain in use",
          "marker #13 in ignore_numbered_elements is a base layer marker ('base_persistent_furniture'); structural elements normally remain in use",
          "marker #14 in ignore_numbered_elements is a base layer marker ('base_persistent_furniture'); structural elements normally remain in use",
          "marker #15 in ignore_numbered_elements is a base layer marker ('base_persistent_fixture'); structural elements normally remain in use",
          "marker #16 in ignore_numbered_elements is a base layer marker ('base_opening'); structural elements normally remain in use",
          "marker #17 in ignore_numbered_elements is a base layer marker ('base_opening'); structural elements normally remain in use",
          "marker #18 in ignore_numbered_elements is a base layer marker ('base_opening'); structural elements normally remain in use",
          "marker #19 in ignore_numbered_elements is a base layer marker ('base_persistent_fixture'); structural elements normally remain in use",
          "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)"
        ]
      },
      "L61B01": {
        "bg_id": "L61B01",
        "fp_id": "fp_l61_store_and_assigned_inserts",
        "use_numbered_elements": [
          11,
          12,
          13,
          14,
          15,
          17,
          19,
          20,
          21,
          22,
          23
        ],
        "ignore_numbered_elements": [
          1,
          2,
          3,
          4,
          5,
          6,
          7,
          8,
          9,
          10
        ],
        "base_markers_to_reference": [
          {
            "number": 11,
            "label": "Front cabin section",
            "category": "area",
            "position_hint": "lower portion of camper insert, behind cockpit seats",
            "base_layer_decision": "base_structural_unit",
            "render_role": "not_applicable",
            "top_down_legibility": "not_applicable"
          },
          {
            "number": 12,
            "label": "Camper cockpit",
            "category": "area",
            "position_hint": "upper portion of camper insert",
            "base_layer_decision": "base_structural_unit",
            "render_role": "not_applicable",
            "top_down_legibility": "not_applicable"
          },
          {
            "number": 13,
            "label": "Driver seat",
            "category": "furniture",
            "position_hint": "front-left cockpit in vehicle-local coordinates",
            "base_layer_decision": "base_persistent_furniture",
            "render_role": "not_applicable",
            "top_down_legibility": "not_applicable"
          },
          {
            "number": 14,
            "label": "Passenger seat",
            "category": "furniture",
            "position_hint": "front-right cockpit in vehicle-local coordinates",
            "base_layer_decision": "base_persistent_furniture",
            "render_role": "not_applicable",
            "top_down_legibility": "not_applicable"
          },
          {
            "number": 15,
            "label": "Steering wheel",
            "category": "prop",
            "position_hint": "ahead of driver seat in front-left cockpit",
            "base_layer_decision": "base_persistent_fixture",
            "render_role": "not_applicable",
            "top_down_legibility": "not_applicable"
          },
          {
            "number": 17,
            "label": "Passenger window opening",
            "category": "opening",
            "position_hint": "right side of cockpit beside passenger seat",
            "base_layer_decision": "base_opening",
            "render_role": "not_applicable",
            "top_down_legibility": "not_applicable"
          },
          {
            "number": 19,
            "label": "Interior bulb fixture",
            "category": "prop",
            "position_hint": "ceiling attachment projected onto cabin centerline just behind cockpit seats",
            "base_layer_decision": "base_persistent_fixture",
            "render_role": "not_applicable",
            "top_down_legibility": "not_applicable"
          }
        ],
        "transient_markers_to_describe": [
          {
            "number": 20,
            "label": "Accident smoke",
            "category": "prop",
            "position_hint": "within overturned cockpit and adjoining cabin",
            "base_layer_decision": "state_overlay_plot_cue",
            "render_role": "not_applicable",
            "top_down_legibility": "not_applicable"
          },
          {
            "number": 21,
            "label": "Broken window glass",
            "category": "prop",
            "position_hint": "passenger-side window opening and adjacent overturned interior",
            "base_layer_decision": "state_overlay_transient_object",
            "render_role": "not_applicable",
            "top_down_legibility": "not_applicable"
          },
          {
            "number": 22,
            "label": "Dim bulb flicker",
            "category": "prop",
            "position_hint": "at interior bulb fixture number 19",
            "base_layer_decision": "state_overlay_plot_cue",
            "render_role": "not_applicable",
            "top_down_legibility": "not_applicable"
          },
          {
            "number": 23,
            "label": "Overturned vehicle orientation",
            "category": "area",
            "position_hint": "entire camper insert; roof below floor in accident background",
            "base_layer_decision": "state_overlay_plot_cue",
            "render_role": "not_applicable",
            "top_down_legibility": "not_applicable"
          }
        ],
        "ignored_state_overlay_markers": [],
        "target_unit_marker_numbers": [
          11,
          12
        ],
        "dominant_target_unit_marker_number": null,
        "clean_background_expected": false,
        "diagnostics": [
          "marker #1 in ignore_numbered_elements is a base layer marker ('base_structural_unit'); structural elements normally remain in use",
          "marker #2 in ignore_numbered_elements is a base layer marker ('base_structural_unit'); structural elements normally remain in use",
          "marker #3 in ignore_numbered_elements is a base layer marker ('base_structural_unit'); structural elements normally remain in use",
          "marker #4 in ignore_numbered_elements is a base layer marker ('base_structural_unit'); structural elements normally remain in use",
          "marker #5 in ignore_numbered_elements is a base layer marker ('base_opening'); structural elements normally remain in use",
          "marker #6 in ignore_numbered_elements is a base layer marker ('base_persistent_furniture'); structural elements normally remain in use",
          "marker #7 in ignore_numbered_elements is a base layer marker ('base_persistent_furniture'); structural elements normally remain in use",
          "marker #8 in ignore_numbered_elements is a base layer marker ('base_persistent_furniture'); structural elements normally remain in use",
          "marker #9 in ignore_numbered_elements is a base layer marker ('base_persistent_fixture'); structural elements normally remain in use",
          "marker #10 in ignore_numbered_elements is a base layer marker ('base_persistent_fixture'); structural elements normally remain in use",
          "multiple base_structural_unit markers in use_numbered_elements ([11, 12]); dominant_target_unit_marker_number left empty (W19B-1 lock — no lexical disambiguation)"
        ]
      },
      "L67B01": {
        "bg_id": "L67B01",
        "fp_id": "fp_repair_storage",
        "use_numbered_elements": [
          1,
          2,
          3,
          4,
          5,
          7,
          8,
          10,
          12,
          13
        ],
        "ignore_numbered_elements": [],
        "base_markers_to_reference": [
          {
            "number": 1,
            "label": "Storage and rest area",
            "category": "area",
            "position_hint": "western portion of the continuous interior",
            "base_layer_decision": "base_structural_unit",
            "render_role": "not_applicable",
            "top_down_legibility": "not_applicable"
          },
          {
            "number": 2,
            "label": "Vehicle repair bay",
            "category": "area",
            "position_hint": "larger eastern portion, open to the western rest area",
            "base_layer_decision": "base_structural_unit",
            "render_role": "not_applicable",
            "top_down_legibility": "not_applicable"
          },
          {
            "number": 3,
            "label": "Entrance circulation strip",
            "category": "area",
            "position_hint": "southern edge linking pedestrian entrance and repair bay",
            "base_layer_decision": "base_structural_unit",
            "render_role": "not_applicable",
            "top_down_legibility": "not_applicable"
          },
          {
            "number": 4,
            "label": "Cot",
            "category": "furniture",
            "position_hint": "against west wall, long axis north-south, head at north",
            "base_layer_decision": "base_persistent_furniture",
            "render_role": "not_applicable",
            "top_down_legibility": "not_applicable"
          },
          {
            "number": 5,
            "label": "Tool-access workbench",
            "category": "furniture",
            "position_hint": "immediately east of the cot's southern half, outside the main sightline",
            "base_layer_decision": "base_persistent_furniture",
            "render_role": "not_applicable",
            "top_down_legibility": "not_applicable"
          },
          {
            "number": 7,
            "label": "Storage shelving",
            "category": "furniture",
            "position_hint": "north wall west of center",
            "base_layer_decision": "base_persistent_fixture",
            "render_role": "not_applicable",
            "top_down_legibility": "not_applicable"
          },
          {
            "number": 8,
            "label": "Large speaker bank",
            "category": "furniture",
            "position_hint": "northeast wall beyond the vehicle working position",
            "base_layer_decision": "base_persistent_furniture",
            "render_role": "not_applicable",
            "top_down_legibility": "not_applicable"
          },
          {
            "number": 10,
            "label": "Pedestrian entrance",
            "category": "opening",
            "position_hint": "south wall near southwest corner, opening onto the circulation strip",
            "base_layer_decision": "base_opening",
            "render_role": "not_applicable",
            "top_down_legibility": "not_applicable"
          }
        ],
        "transient_markers_to_describe": [
          {
            "number": 12,
            "label": "Camper under repair",
            "category": "prop",
            "position_hint": "center of eastern repair bay, long axis north-south, front toward north; preserve a working aisle along its west side",
            "base_layer_decision": "state_overlay_transient_object",
            "render_role": "not_applicable",
            "top_down_legibility": "not_applicable"
          },
          {
            "number": 13,
            "label": "Large loose pliers",
            "category": "prop",
            "position_hint": "cot-facing edge of workbench number 5, within reach from cot number 4",
            "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)"
        ]
      },
      "L69B01": {
        "bg_id": "L69B01",
        "fp_id": "fp_repair_forecourt",
        "use_numbered_elements": [
          1,
          2,
          3,
          4,
          5,
          6,
          7,
          8,
          11
        ],
        "ignore_numbered_elements": [
          12,
          13,
          14
        ],
        "base_markers_to_reference": [
          {
            "number": 1,
            "label": "Open forecourt",
            "category": "area",
            "position_hint": "central exterior space south of both buildings, surrounding the parking and clearance allocations",
            "base_layer_decision": "base_structural_unit",
            "render_role": "not_applicable",
            "top_down_legibility": "not_applicable"
          },
          {
            "number": 2,
            "label": "Repair building",
            "category": "area",
            "position_hint": "northwest footprint",
            "base_layer_decision": "base_structural_unit",
            "render_role": "not_applicable",
            "top_down_legibility": "not_applicable"
          },
          {
            "number": 3,
            "label": "Container diner",
            "category": "area",
            "position_hint": "northeast footprint, immediately beside the repair building",
            "base_layer_decision": "base_structural_unit",
            "render_role": "not_applicable",
            "top_down_legibility": "not_applicable"
          },
          {
            "number": 4,
            "label": "Pedestrian threshold strip",
            "category": "area",
            "position_hint": "along the south-facing building fronts, connecting their pedestrian entrances",
            "base_layer_decision": "base_structural_unit",
            "render_role": "not_applicable",
            "top_down_legibility": "not_applicable"
          },
          {
            "number": 5,
            "label": "Vehicle-service opening",
            "category": "opening",
            "position_hint": "south wall of the repair building, west of its pedestrian entrance",
            "base_layer_decision": "base_opening",
            "render_role": "not_applicable",
            "top_down_legibility": "not_applicable"
          },
          {
            "number": 6,
            "label": "Repair pedestrian door",
            "category": "opening",
            "position_hint": "south wall near the repair building's southeast corner",
            "base_layer_decision": "base_opening",
            "render_role": "not_applicable",
            "top_down_legibility": "not_applicable"
          },
          {
            "number": 7,
            "label": "Diner entrance",
            "category": "opening",
            "position_hint": "south wall of the container diner, facing the shared threshold strip",
            "base_layer_decision": "base_opening",
            "render_role": "not_applicable",
            "top_down_legibility": "not_applicable"
          },
          {
            "number": 8,
            "label": "Camper parking allocation",
            "category": "area",
            "position_hint": "west of center in the forecourt, south of the repair building; long axis north-south",
            "base_layer_decision": "base_structural_unit",
            "render_role": "not_applicable",
            "top_down_legibility": "not_applicable"
          }
        ],
        "transient_markers_to_describe": [
          {
            "number": 11,
            "label": "Parked camper",
            "category": "prop",
            "position_hint": "within number 8, nose south and rear north; temporary vehicle placement, not a fixed fixture",
            "base_layer_decision": "state_overlay_transient_object",
            "render_role": "not_applicable",
            "top_down_legibility": "not_applicable"
          }
        ],
        "ignored_state_overlay_markers": [
          {
            "number": 12,
            "label": "Farewell letter",
            "category": "prop",
            "position_hint": "held during the outdoor letter check beside the east side of number 8; not fixed to the ground",
            "base_layer_decision": "state_overlay_transient_object",
            "render_role": "not_applicable",
            "top_down_legibility": "not_applicable"
          },
          {
            "number": 13,
            "label": "Departing camper",
            "category": "prop",
            "position_hint": "in number 9 approaching number 10, nose south and rear toward the buildings; replaces number 11",
            "base_layer_decision": "state_overlay_transient_object",
            "render_role": "not_applicable",
            "top_down_legibility": "not_applicable"
          },
          {
            "number": 14,
            "label": "Departure dust plume",
            "category": "prop",
            "position_hint": "immediately behind the departing camper's rear wheels, extending northward into the forecourt",
            "base_layer_decision": "state_overlay_plot_cue",
            "render_role": "not_applicable",
            "top_down_legibility": "not_applicable"
          }
        ],
        "target_unit_marker_numbers": [
          1,
          2,
          3,
          4,
          8
        ],
        "dominant_target_unit_marker_number": null,
        "clean_background_expected": false,
        "diagnostics": [
          "multiple base_structural_unit markers in use_numbered_elements ([1, 2, 3, 4, 8]); dominant_target_unit_marker_number left empty (W19B-1 lock — no lexical disambiguation)"
        ]
      },
      "L69B03": {
        "bg_id": "L69B03",
        "fp_id": "fp_repair_forecourt",
        "use_numbered_elements": [
          1,
          2,
          4,
          5,
          6,
          8,
          11,
          12
        ],
        "ignore_numbered_elements": [
          13,
          14
        ],
        "base_markers_to_reference": [
          {
            "number": 1,
            "label": "Open forecourt",
            "category": "area",
            "position_hint": "central exterior space south of both buildings, surrounding the parking and clearance allocations",
            "base_layer_decision": "base_structural_unit",
            "render_role": "not_applicable",
            "top_down_legibility": "not_applicable"
          },
          {
            "number": 2,
            "label": "Repair building",
            "category": "area",
            "position_hint": "northwest footprint",
            "base_layer_decision": "base_structural_unit",
            "render_role": "not_applicable",
            "top_down_legibility": "not_applicable"
          },
          {
            "number": 4,
            "label": "Pedestrian threshold strip",
            "category": "area",
            "position_hint": "along the south-facing building fronts, connecting their pedestrian entrances",
            "base_layer_decision": "base_structural_unit",
            "render_role": "not_applicable",
            "top_down_legibility": "not_applicable"
          },
          {
            "number": 5,
            "label": "Vehicle-service opening",
            "category": "opening",
            "position_hint": "south wall of the repair building, west of its pedestrian entrance",
            "base_layer_decision": "base_opening",
            "render_role": "not_applicable",
            "top_down_legibility": "not_applicable"
          },
          {
            "number": 6,
            "label": "Repair pedestrian door",
            "category": "opening",
            "position_hint": "south wall near the repair building's southeast corner",
            "base_layer_decision": "base_opening",
            "render_role": "not_applicable",
            "top_down_legibility": "not_applicable"
          },
          {
            "number": 8,
            "label": "Camper parking allocation",
            "category": "area",
            "position_hint": "west of center in the forecourt, south of the repair building; long axis north-south",
            "base_layer_decision": "base_structural_unit",
            "render_role": "not_applicable",
            "top_down_legibility": "not_applicable"
          }
        ],
        "transient_markers_to_describe": [
          {
            "number": 11,
            "label": "Parked camper",
            "category": "prop",
            "position_hint": "within number 8, nose south and rear north; temporary vehicle placement, not a fixed fixture",
            "base_layer_decision": "state_overlay_transient_object",
            "render_role": "not_applicable",
            "top_down_legibility": "not_applicable"
          },
          {
            "number": 12,
            "label": "Farewell letter",
            "category": "prop",
            "position_hint": "held during the outdoor letter check beside the east side of number 8; not fixed to the ground",
            "base_layer_decision": "state_overlay_transient_object",
            "render_role": "not_applicable",
            "top_down_legibility": "not_applicable"
          }
        ],
        "ignored_state_overlay_markers": [
          {
            "number": 13,
            "label": "Departing camper",
            "category": "prop",
            "position_hint": "in number 9 approaching number 10, nose south and rear toward the buildings; replaces number 11",
            "base_layer_decision": "state_overlay_transient_object",
            "render_role": "not_applicable",
            "top_down_legibility": "not_applicable"
          },
          {
            "number": 14,
            "label": "Departure dust plume",
            "category": "prop",
            "position_hint": "immediately behind the departing camper's rear wheels, extending northward into the forecourt",
            "base_layer_decision": "state_overlay_plot_cue",
            "render_role": "not_applicable",
            "top_down_legibility": "not_applicable"
          }
        ],
        "target_unit_marker_numbers": [
          1,
          2,
          4,
          8
        ],
        "dominant_target_unit_marker_number": null,
        "clean_background_expected": false,
        "diagnostics": [
          "multiple base_structural_unit markers in use_numbered_elements ([1, 2, 4, 8]); dominant_target_unit_marker_number left empty (W19B-1 lock — no lexical disambiguation)"
        ]
      },
      "L69B02": {
        "bg_id": "L69B02",
        "fp_id": "fp_repair_forecourt",
        "use_numbered_elements": [
          1,
          8,
          9,
          10,
          13,
          14
        ],
        "ignore_numbered_elements": [
          11,
          12
        ],
        "base_markers_to_reference": [
          {
            "number": 1,
            "label": "Open forecourt",
            "category": "area",
            "position_hint": "central exterior space south of both buildings, surrounding the parking and clearance allocations",
            "base_layer_decision": "base_structural_unit",
            "render_role": "not_applicable",
            "top_down_legibility": "not_applicable"
          },
          {
            "number": 8,
            "label": "Camper parking allocation",
            "category": "area",
            "position_hint": "west of center in the forecourt, south of the repair building; long axis north-south",
            "base_layer_decision": "base_structural_unit",
            "render_role": "not_applicable",
            "top_down_legibility": "not_applicable"
          },
          {
            "number": 9,
            "label": "Departure clearance",
            "category": "area",
            "position_hint": "continuous open corridor from the parking allocation toward the southern access",
            "base_layer_decision": "base_structural_unit",
            "render_role": "not_applicable",
            "top_down_legibility": "not_applicable"
          },
          {
            "number": 10,
            "label": "Ungated site access",
            "category": "opening",
            "position_hint": "southern edge of the forecourt, aligned with departure clearance",
            "base_layer_decision": "base_opening",
            "render_role": "not_applicable",
            "top_down_legibility": "not_applicable"
          }
        ],
        "transient_markers_to_describe": [
          {
            "number": 13,
            "label": "Departing camper",
            "category": "prop",
            "position_hint": "in number 9 approaching number 10, nose south and rear toward the buildings; replaces number 11",
            "base_layer_decision": "state_overlay_transient_object",
            "render_role": "not_applicable",
            "top_down_legibility": "not_applicable"
          },
          {
            "number": 14,
            "label": "Departure dust plume",
            "category": "prop",
            "position_hint": "immediately behind the departing camper's rear wheels, extending northward into the forecourt",
            "base_layer_decision": "state_overlay_plot_cue",
            "render_role": "not_applicable",
            "top_down_legibility": "not_applicable"
          }
        ],
        "ignored_state_overlay_markers": [
          {
            "number": 11,
            "label": "Parked camper",
            "category": "prop",
            "position_hint": "within number 8, nose south and rear north; temporary vehicle placement, not a fixed fixture",
            "base_layer_decision": "state_overlay_transient_object",
            "render_role": "not_applicable",
            "top_down_legibility": "not_applicable"
          },
          {
            "number": 12,
            "label": "Farewell letter",
            "category": "prop",
            "position_hint": "held during the outdoor letter check beside the east side of number 8; not fixed to the ground",
            "base_layer_decision": "state_overlay_transient_object",
            "render_role": "not_applicable",
            "top_down_legibility": "not_applicable"
          }
        ],
        "target_unit_marker_numbers": [
          1,
          8,
          9
        ],
        "dominant_target_unit_marker_number": null,
        "clean_background_expected": false,
        "diagnostics": [
          "multiple base_structural_unit markers in use_numbered_elements ([1, 8, 9]); dominant_target_unit_marker_number left empty (W19B-1 lock — no lexical disambiguation)"
        ]
      },
      "L77B02": {
        "bg_id": "L77B02",
        "fp_id": "fp_church_forecourt",
        "use_numbered_elements": [
          1,
          2,
          3,
          4,
          5,
          6,
          7,
          8,
          9,
          10
        ],
        "ignore_numbered_elements": [
          11
        ],
        "base_markers_to_reference": [
          {
            "number": 1,
            "label": "Church frontage and interior edge",
            "category": "area",
            "position_hint": "north edge, shallow interior strip behind the entrance wall",
            "base_layer_decision": "base_structural_unit",
            "render_role": "not_applicable",
            "top_down_legibility": "not_applicable"
          },
          {
            "number": 2,
            "label": "Entrance threshold",
            "category": "area",
            "position_hint": "north center of forecourt, immediately outside number 3",
            "base_layer_decision": "base_structural_unit",
            "render_role": "not_applicable",
            "top_down_legibility": "not_applicable"
          },
          {
            "number": 3,
            "label": "Church entrance",
            "category": "opening",
            "position_hint": "center of the north frontage, connecting numbers 2 and 1",
            "base_layer_decision": "base_opening",
            "render_role": "not_applicable",
            "top_down_legibility": "not_applicable"
          },
          {
            "number": 4,
            "label": "Central forecourt",
            "category": "area",
            "position_hint": "center of plan, connecting southern access apron to northern threshold",
            "base_layer_decision": "base_structural_unit",
            "render_role": "not_applicable",
            "top_down_legibility": "not_applicable"
          },
          {
            "number": 5,
            "label": "Vehicle-access apron",
            "category": "area",
            "position_hint": "southern edge of forecourt, broad enough for truck arrival and unloading",
            "base_layer_decision": "base_structural_unit",
            "render_role": "not_applicable",
            "top_down_legibility": "not_applicable"
          },
          {
            "number": 6,
            "label": "Outstretched-arm statue and base",
            "category": "prop",
            "position_hint": "northwest side of forecourt, west of threshold, facing south",
            "base_layer_decision": "base_persistent_fixture",
            "render_role": "not_applicable",
            "top_down_legibility": "not_applicable"
          },
          {
            "number": 7,
            "label": "Open gathering area",
            "category": "area",
            "position_hint": "east side of central forecourt, adjoining the approach without a separating wall",
            "base_layer_decision": "base_structural_unit",
            "render_role": "not_applicable",
            "top_down_legibility": "not_applicable"
          }
        ],
        "transient_markers_to_describe": [
          {
            "number": 8,
            "label": "Statue face mask",
            "category": "prop",
            "position_hint": "covering the face of number 6; traditional carved-smile mask form",
            "base_layer_decision": "state_overlay_transient_object",
            "render_role": "not_applicable",
            "top_down_legibility": "not_applicable"
          },
          {
            "number": 9,
            "label": "Stopped truck with cage",
            "category": "prop",
            "position_hint": "within number 5, aligned east-west with its unloading side accessible from number 4",
            "base_layer_decision": "state_overlay_transient_object",
            "render_role": "not_applicable",
            "top_down_legibility": "not_applicable"
          },
          {
            "number": 10,
            "label": "Armed masked crowd",
            "category": "area",
            "position_hint": "concentrated in number 7 and along the eastern margin of number 4, carrying spears and clubs",
            "base_layer_decision": "state_overlay_plot_cue",
            "render_role": "not_applicable",
            "top_down_legibility": "not_applicable"
          }
        ],
        "ignored_state_overlay_markers": [
          {
            "number": 11,
            "label": "Forced entry of bound captives",
            "category": "prop",
            "position_hint": "soldiers pushing two bound captives from number 4 across number 2 through number 3",
            "base_layer_decision": "state_overlay_plot_cue",
            "render_role": "not_applicable",
            "top_down_legibility": "not_applicable"
          }
        ],
        "target_unit_marker_numbers": [
          1,
          2,
          4,
          5,
          7
        ],
        "dominant_target_unit_marker_number": null,
        "clean_background_expected": false,
        "diagnostics": [
          "multiple base_structural_unit markers in use_numbered_elements ([1, 2, 4, 5, 7]); dominant_target_unit_marker_number left empty (W19B-1 lock — no lexical disambiguation)"
        ]
      },
      "L77B01": {
        "bg_id": "L77B01",
        "fp_id": "fp_church_forecourt",
        "use_numbered_elements": [
          1,
          2,
          3,
          4,
          6,
          8,
          11
        ],
        "ignore_numbered_elements": [
          9,
          10
        ],
        "base_markers_to_reference": [
          {
            "number": 1,
            "label": "Church frontage and interior edge",
            "category": "area",
            "position_hint": "north edge, shallow interior strip behind the entrance wall",
            "base_layer_decision": "base_structural_unit",
            "render_role": "not_applicable",
            "top_down_legibility": "not_applicable"
          },
          {
            "number": 2,
            "label": "Entrance threshold",
            "category": "area",
            "position_hint": "north center of forecourt, immediately outside number 3",
            "base_layer_decision": "base_structural_unit",
            "render_role": "not_applicable",
            "top_down_legibility": "not_applicable"
          },
          {
            "number": 3,
            "label": "Church entrance",
            "category": "opening",
            "position_hint": "center of the north frontage, connecting numbers 2 and 1",
            "base_layer_decision": "base_opening",
            "render_role": "not_applicable",
            "top_down_legibility": "not_applicable"
          },
          {
            "number": 4,
            "label": "Central forecourt",
            "category": "area",
            "position_hint": "center of plan, connecting southern access apron to northern threshold",
            "base_layer_decision": "base_structural_unit",
            "render_role": "not_applicable",
            "top_down_legibility": "not_applicable"
          },
          {
            "number": 6,
            "label": "Outstretched-arm statue and base",
            "category": "prop",
            "position_hint": "northwest side of forecourt, west of threshold, facing south",
            "base_layer_decision": "base_persistent_fixture",
            "render_role": "not_applicable",
            "top_down_legibility": "not_applicable"
          }
        ],
        "transient_markers_to_describe": [
          {
            "number": 8,
            "label": "Statue face mask",
            "category": "prop",
            "position_hint": "covering the face of number 6; traditional carved-smile mask form",
            "base_layer_decision": "state_overlay_transient_object",
            "render_role": "not_applicable",
            "top_down_legibility": "not_applicable"
          },
          {
            "number": 11,
            "label": "Forced entry of bound captives",
            "category": "prop",
            "position_hint": "soldiers pushing two bound captives from number 4 across number 2 through number 3",
            "base_layer_decision": "state_overlay_plot_cue",
            "render_role": "not_applicable",
            "top_down_legibility": "not_applicable"
          }
        ],
        "ignored_state_overlay_markers": [
          {
            "number": 9,
            "label": "Stopped truck with cage",
            "category": "prop",
            "position_hint": "within number 5, aligned east-west with its unloading side accessible from number 4",
            "base_layer_decision": "state_overlay_transient_object",
            "render_role": "not_applicable",
            "top_down_legibility": "not_applicable"
          },
          {
            "number": 10,
            "label": "Armed masked crowd",
            "category": "area",
            "position_hint": "concentrated in number 7 and along the eastern margin of number 4, carrying spears and clubs",
            "base_layer_decision": "state_overlay_plot_cue",
            "render_role": "not_applicable",
            "top_down_legibility": "not_applicable"
          }
        ],
        "target_unit_marker_numbers": [
          1,
          2,
          4
        ],
        "dominant_target_unit_marker_number": null,
        "clean_background_expected": false,
        "diagnostics": [
          "multiple base_structural_unit markers in use_numbered_elements ([1, 2, 4]); dominant_target_unit_marker_number left empty (W19B-1 lock — no lexical disambiguation)"
        ]
      },
      "L78B02": {
        "bg_id": "L78B02",
        "fp_id": "fp_church_interior",
        "use_numbered_elements": [
          1,
          2,
          3,
          4,
          5,
          7,
          9,
          10,
          11,
          12,
          13
        ],
        "ignore_numbered_elements": [
          14,
          15
        ],
        "base_markers_to_reference": [
          {
            "number": 1,
            "label": "Main nave",
            "category": "area",
            "position_hint": "central and southern hall, between entrance and dais",
            "base_layer_decision": "base_structural_unit",
            "render_role": "not_applicable",
            "top_down_legibility": "not_applicable"
          },
          {
            "number": 2,
            "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": 3,
            "label": "Oversized throne",
            "category": "furniture",
            "position_hint": "center of the dais, facing south",
            "base_layer_decision": "base_persistent_furniture",
            "render_role": "not_applicable",
            "top_down_legibility": "not_applicable"
          },
          {
            "number": 4,
            "label": "Upper gallery",
            "category": "area",
            "position_hint": "west side of the nave, overlooking the central interrogation floor",
            "base_layer_decision": "base_structural_unit",
            "render_role": "not_applicable",
            "top_down_legibility": "not_applicable"
          },
          {
            "number": 5,
            "label": "Barred gate opening",
            "category": "opening",
            "position_hint": "west boundary of the northeast holding bay, facing the interrogation floor",
            "base_layer_decision": "base_opening",
            "render_role": "not_applicable",
            "top_down_legibility": "not_applicable"
          },
          {
            "number": 7,
            "label": "Clear cage route",
            "category": "area",
            "position_hint": "open floor between the holding-bay gate and the interrogation floor",
            "base_layer_decision": "base_structural_unit",
            "render_role": "not_applicable",
            "top_down_legibility": "not_applicable"
          },
          {
            "number": 9,
            "label": "West window opening",
            "category": "opening",
            "position_hint": "west outer wall, south of the gallery footprint",
            "base_layer_decision": "base_opening",
            "render_role": "not_applicable",
            "top_down_legibility": "not_applicable"
          },
          {
            "number": 10,
            "label": "East window opening",
            "category": "opening",
            "position_hint": "east outer wall, south of the holding bay",
            "base_layer_decision": "base_opening",
            "render_role": "not_applicable",
            "top_down_legibility": "not_applicable"
          },
          {
            "number": 11,
            "label": "Dais access steps",
            "category": "area",
            "position_hint": "center of the south edge of the dais",
            "base_layer_decision": "base_structural_unit",
            "render_role": "not_applicable",
            "top_down_legibility": "not_applicable"
          },
          {
            "number": 12,
            "label": "Interrogation floor",
            "category": "area",
            "position_hint": "central nave immediately south of the dais steps",
            "base_layer_decision": "base_structural_unit",
            "render_role": "not_applicable",
            "top_down_legibility": "not_applicable"
          },
          {
            "number": 13,
            "label": "Gallery rail",
            "category": "prop",
            "position_hint": "east-facing inner edge of the west gallery",
            "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": "Revealed steel cage",
            "category": "prop",
            "position_hint": "on the clear route just outside the holding-bay gate, beside the interrogation floor; exact movement phase belongs to the overlay",
            "base_layer_decision": "state_overlay_transient_object",
            "render_role": "not_applicable",
            "top_down_legibility": "not_applicable"
          },
          {
            "number": 15,
            "label": "Gate slid open",
            "category": "opening",
            "position_hint": "movable barred leaf retracted beside the fixed holding-bay opening",
            "base_layer_decision": "state_overlay_plot_cue",
            "render_role": "not_applicable",
            "top_down_legibility": "not_applicable"
          }
        ],
        "target_unit_marker_numbers": [
          1,
          2,
          4,
          7,
          11,
          12
        ],
        "dominant_target_unit_marker_number": null,
        "clean_background_expected": true,
        "diagnostics": [
          "multiple base_structural_unit markers in use_numbered_elements ([1, 2, 4, 7, 11, 12]); dominant_target_unit_marker_number left empty (W19B-1 lock — no lexical disambiguation)"
        ]
      },
      "L78B03": {
        "bg_id": "L78B03",
        "fp_id": "fp_church_interior",
        "use_numbered_elements": [
          1,
          2,
          3,
          5,
          6,
          7,
          10,
          11,
          12,
          14,
          15
        ],
        "ignore_numbered_elements": [],
        "base_markers_to_reference": [
          {
            "number": 1,
            "label": "Main nave",
            "category": "area",
            "position_hint": "central and southern hall, between entrance and dais",
            "base_layer_decision": "base_structural_unit",
            "render_role": "not_applicable",
            "top_down_legibility": "not_applicable"
          },
          {
            "number": 2,
            "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": 3,
            "label": "Oversized throne",
            "category": "furniture",
            "position_hint": "center of the dais, facing south",
            "base_layer_decision": "base_persistent_furniture",
            "render_role": "not_applicable",
            "top_down_legibility": "not_applicable"
          },
          {
            "number": 5,
            "label": "Barred gate opening",
            "category": "opening",
            "position_hint": "west boundary of the northeast holding bay, facing the interrogation floor",
            "base_layer_decision": "base_opening",
            "render_role": "not_applicable",
            "top_down_legibility": "not_applicable"
          },
          {
            "number": 6,
            "label": "Holding bay",
            "category": "area",
            "position_hint": "northeast side of the nave, beside the dais approach",
            "base_layer_decision": "base_structural_unit",
            "render_role": "not_applicable",
            "top_down_legibility": "not_applicable"
          },
          {
            "number": 7,
            "label": "Clear cage route",
            "category": "area",
            "position_hint": "open floor between the holding-bay gate and the interrogation floor",
            "base_layer_decision": "base_structural_unit",
            "render_role": "not_applicable",
            "top_down_legibility": "not_applicable"
          },
          {
            "number": 10,
            "label": "East window opening",
            "category": "opening",
            "position_hint": "east outer wall, south of the holding bay",
            "base_layer_decision": "base_opening",
            "render_role": "not_applicable",
            "top_down_legibility": "not_applicable"
          },
          {
            "number": 11,
            "label": "Dais access steps",
            "category": "area",
            "position_hint": "center of the south edge of the dais",
            "base_layer_decision": "base_structural_unit",
            "render_role": "not_applicable",
            "top_down_legibility": "not_applicable"
          },
          {
            "number": 12,
            "label": "Interrogation floor",
            "category": "area",
            "position_hint": "central nave immediately south of the dais steps",
            "base_layer_decision": "base_structural_unit",
            "render_role": "not_applicable",
            "top_down_legibility": "not_applicable"
          }
        ],
        "transient_markers_to_describe": [
          {
            "number": 14,
            "label": "Revealed steel cage",
            "category": "prop",
            "position_hint": "on the clear route just outside the holding-bay gate, beside the interrogation floor; exact movement phase belongs to the overlay",
            "base_layer_decision": "state_overlay_transient_object",
            "render_role": "not_applicable",
            "top_down_legibility": "not_applicable"
          },
          {
            "number": 15,
            "label": "Gate slid open",
            "category": "opening",
            "position_hint": "movable barred leaf retracted beside the fixed holding-bay opening",
            "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,
          6,
          7,
          11,
          12
        ],
        "dominant_target_unit_marker_number": null,
        "clean_background_expected": false,
        "diagnostics": [
          "multiple base_structural_unit markers in use_numbered_elements ([1, 2, 6, 7, 11, 12]); dominant_target_unit_marker_number left empty (W19B-1 lock — no lexical disambiguation)"
        ]
      },
      "L78B01": {
        "bg_id": "L78B01",
        "fp_id": "fp_church_interior",
        "use_numbered_elements": [
          1,
          2,
          3,
          4,
          11,
          12,
          13
        ],
        "ignore_numbered_elements": [],
        "base_markers_to_reference": [
          {
            "number": 1,
            "label": "Main nave",
            "category": "area",
            "position_hint": "central and southern hall, between entrance and dais",
            "base_layer_decision": "base_structural_unit",
            "render_role": "not_applicable",
            "top_down_legibility": "not_applicable"
          },
          {
            "number": 2,
            "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": 3,
            "label": "Oversized throne",
            "category": "furniture",
            "position_hint": "center of the dais, facing south",
            "base_layer_decision": "base_persistent_furniture",
            "render_role": "not_applicable",
            "top_down_legibility": "not_applicable"
          },
          {
            "number": 4,
            "label": "Upper gallery",
            "category": "area",
            "position_hint": "west side of the nave, overlooking the central interrogation floor",
            "base_layer_decision": "base_structural_unit",
            "render_role": "not_applicable",
            "top_down_legibility": "not_applicable"
          },
          {
            "number": 11,
            "label": "Dais access steps",
            "category": "area",
            "position_hint": "center of the south edge of the dais",
            "base_layer_decision": "base_structural_unit",
            "render_role": "not_applicable",
            "top_down_legibility": "not_applicable"
          },
          {
            "number": 12,
            "label": "Interrogation floor",
            "category": "area",
            "position_hint": "central nave immediately south of the dais steps",
            "base_layer_decision": "base_structural_unit",
            "render_role": "not_applicable",
            "top_down_legibility": "not_applicable"
          },
          {
            "number": 13,
            "label": "Gallery rail",
            "category": "prop",
            "position_hint": "east-facing inner edge of the west gallery",
            "base_layer_decision": "base_persistent_fixture",
            "render_role": "not_applicable",
            "top_down_legibility": "not_applicable"
          }
        ],
        "transient_markers_to_describe": [],
        "ignored_state_overlay_markers": [],
        "target_unit_marker_numbers": [
          1,
          2,
          4,
          11,
          12
        ],
        "dominant_target_unit_marker_number": null,
        "clean_background_expected": true,
        "diagnostics": [
          "multiple base_structural_unit markers in use_numbered_elements ([1, 2, 4, 11, 12]); dominant_target_unit_marker_number left empty (W19B-1 lock — no lexical disambiguation)"
        ]
      },
      "L79B01": {
        "bg_id": "L79B01",
        "fp_id": "fp_prison_cell",
        "use_numbered_elements": [
          1,
          2,
          3,
          4,
          5,
          6,
          7,
          8
        ],
        "ignore_numbered_elements": [],
        "base_markers_to_reference": [
          {
            "number": 1,
            "label": "Cell interior",
            "category": "area",
            "position_hint": "Main rectangular enclosure north of the barred boundary; marker on central open floor",
            "base_layer_decision": "base_structural_unit",
            "render_role": "not_applicable",
            "top_down_legibility": "not_applicable"
          },
          {
            "number": 2,
            "label": "Iron-bar boundary",
            "category": "area",
            "position_hint": "South edge of the cell, between the solid side walls and west of the access gate",
            "base_layer_decision": "base_structural_unit",
            "render_role": "not_applicable",
            "top_down_legibility": "not_applicable"
          },
          {
            "number": 3,
            "label": "Barred access gate",
            "category": "opening",
            "position_hint": "Southeast portion of the barred boundary, opening outward into the corridor",
            "base_layer_decision": "base_opening",
            "render_role": "not_applicable",
            "top_down_legibility": "not_applicable"
          },
          {
            "number": 4,
            "label": "Exterior corridor strip",
            "category": "area",
            "position_hint": "Immediately south of the barred boundary and access gate",
            "base_layer_decision": "base_structural_unit",
            "render_role": "not_applicable",
            "top_down_legibility": "not_applicable"
          },
          {
            "number": 5,
            "label": "Hay-storage corner",
            "category": "area",
            "position_hint": "Northwest corner of the cell, contiguous with the open cell floor",
            "base_layer_decision": "base_structural_unit",
            "render_role": "not_applicable",
            "top_down_legibility": "not_applicable"
          },
          {
            "number": 6,
            "label": "Floor-resting area",
            "category": "area",
            "position_hint": "Northeast portion of the cell against the rear wall, clear of the gate approach",
            "base_layer_decision": "base_structural_unit",
            "render_role": "not_applicable",
            "top_down_legibility": "not_applicable"
          }
        ],
        "transient_markers_to_describe": [
          {
            "number": 7,
            "label": "Loose hay pile",
            "category": "prop",
            "position_hint": "Within number 5, against the northwest corner; loose scene dressing retained across the referenced background",
            "base_layer_decision": "state_overlay_transient_object",
            "render_role": "not_applicable",
            "top_down_legibility": "not_applicable"
          },
          {
            "number": 8,
            "label": "Pooled floor water",
            "category": "area",
            "position_hint": "On the west-side cell floor just south of number 5, within easy reach of the hay and outside the central gate-to-resting-area route",
            "base_layer_decision": "state_overlay_plot_cue",
            "render_role": "not_applicable",
            "top_down_legibility": "not_applicable"
          }
        ],
        "ignored_state_overlay_markers": [],
        "target_unit_marker_numbers": [
          1,
          2,
          4,
          5,
          6
        ],
        "dominant_target_unit_marker_number": null,
        "clean_background_expected": false,
        "diagnostics": [
          "multiple base_structural_unit markers in use_numbered_elements ([1, 2, 4, 5, 6]); dominant_target_unit_marker_number left empty (W19B-1 lock — no lexical disambiguation)"
        ]
      },
      "L87B01": {
        "bg_id": "L87B01",
        "fp_id": "fp_village_arena",
        "use_numbered_elements": [
          1,
          2,
          3,
          4,
          5,
          6,
          7,
          8,
          9,
          10,
          11,
          12,
          15,
          16,
          17,
          18,
          19,
          20
        ],
        "ignore_numbered_elements": [],
        "base_markers_to_reference": [
          {
            "number": 1,
            "label": "Fighting ground",
            "category": "area",
            "position_hint": "large central rectangle",
            "base_layer_decision": "base_structural_unit",
            "render_role": "not_applicable",
            "top_down_legibility": "not_applicable"
          },
          {
            "number": 2,
            "label": "West spectator stand",
            "category": "area",
            "position_hint": "west edge of fighting ground, facing east",
            "base_layer_decision": "base_structural_unit",
            "render_role": "not_applicable",
            "top_down_legibility": "not_applicable"
          },
          {
            "number": 3,
            "label": "East spectator stand",
            "category": "area",
            "position_hint": "east edge of fighting ground, facing west",
            "base_layer_decision": "base_structural_unit",
            "render_role": "not_applicable",
            "top_down_legibility": "not_applicable"
          },
          {
            "number": 4,
            "label": "Dais",
            "category": "area",
            "position_hint": "north end of fighting ground, centered between stands",
            "base_layer_decision": "base_structural_unit",
            "render_role": "not_applicable",
            "top_down_legibility": "not_applicable"
          },
          {
            "number": 5,
            "label": "Dais seat",
            "category": "furniture",
            "position_hint": "rear center of number 4, facing south",
            "base_layer_decision": "base_persistent_furniture",
            "render_role": "not_applicable",
            "top_down_legibility": "not_applicable"
          },
          {
            "number": 6,
            "label": "Cage-lift opening",
            "category": "opening",
            "position_hint": "southwest portion of number 1, clear of central fighting space",
            "base_layer_decision": "base_opening",
            "render_role": "not_applicable",
            "top_down_legibility": "not_applicable"
          },
          {
            "number": 7,
            "label": "Cage assembly",
            "category": "prop",
            "position_hint": "nested inside number 6",
            "base_layer_decision": "base_persistent_fixture",
            "render_role": "not_applicable",
            "top_down_legibility": "not_applicable"
          },
          {
            "number": 8,
            "label": "Cage gate",
            "category": "opening",
            "position_hint": "north face of number 7, opening toward central fighting space",
            "base_layer_decision": "base_opening",
            "render_role": "not_applicable",
            "top_down_legibility": "not_applicable"
          },
          {
            "number": 9,
            "label": "West access gap",
            "category": "opening",
            "position_hint": "arena west boundary just south of number 2",
            "base_layer_decision": "base_opening",
            "render_role": "not_applicable",
            "top_down_legibility": "not_applicable"
          },
          {
            "number": 10,
            "label": "East access gap",
            "category": "opening",
            "position_hint": "arena east boundary just south of number 3",
            "base_layer_decision": "base_opening",
            "render_role": "not_applicable",
            "top_down_legibility": "not_applicable"
          },
          {
            "number": 11,
            "label": "South entry gap",
            "category": "opening",
            "position_hint": "center of southern arena boundary",
            "base_layer_decision": "base_opening",
            "render_role": "not_applicable",
            "top_down_legibility": "not_applicable"
          },
          {
            "number": 12,
            "label": "Perimeter circulation",
            "category": "area",
            "position_hint": "continuous exterior strip behind stands and dais, connected around southern entry",
            "base_layer_decision": "base_structural_unit",
            "render_role": "not_applicable",
            "top_down_legibility": "not_applicable"
          },
          {
            "number": 15,
            "label": "Dais access stair",
            "category": "area",
            "position_hint": "center of south edge of number 4",
            "base_layer_decision": "base_structural_unit",
            "render_role": "not_applicable",
            "top_down_legibility": "not_applicable"
          },
          {
            "number": 16,
            "label": "Northwest torch holder",
            "category": "prop",
            "position_hint": "northwest corner of fighting-ground boundary",
            "base_layer_decision": "base_persistent_fixture",
            "render_role": "not_applicable",
            "top_down_legibility": "not_applicable"
          },
          {
            "number": 17,
            "label": "Northeast torch holder",
            "category": "prop",
            "position_hint": "northeast corner of fighting-ground boundary",
            "base_layer_decision": "base_persistent_fixture",
            "render_role": "not_applicable",
            "top_down_legibility": "not_applicable"
          },
          {
            "number": 18,
            "label": "Southwest torch holder",
            "category": "prop",
            "position_hint": "southwest corner of fighting-ground boundary, outside cage clearance",
            "base_layer_decision": "base_persistent_fixture",
            "render_role": "not_applicable",
            "top_down_legibility": "not_applicable"
          },
          {
            "number": 19,
            "label": "Southeast torch holder",
            "category": "prop",
            "position_hint": "southeast corner of fighting-ground boundary",
            "base_layer_decision": "base_persistent_fixture",
            "render_role": "not_applicable",
            "top_down_legibility": "not_applicable"
          }
        ],
        "transient_markers_to_describe": [
          {
            "number": 20,
            "label": "Attack smoke and dust",
            "category": "prop",
            "position_hint": "originating among spectator stands and spreading across number 1; no exact impact location established",
            "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,
          12,
          15
        ],
        "dominant_target_unit_marker_number": null,
        "clean_background_expected": false,
        "diagnostics": [
          "multiple base_structural_unit markers in use_numbered_elements ([1, 2, 3, 4, 12, 15]); dominant_target_unit_marker_number left empty (W19B-1 lock — no lexical disambiguation)"
        ]
      },
      "L98B01": {
        "bg_id": "L98B01",
        "fp_id": "fp_warehouse_interior",
        "use_numbered_elements": [
          1,
          2,
          3,
          4,
          5,
          6,
          7,
          8,
          9
        ],
        "ignore_numbered_elements": [],
        "base_markers_to_reference": [
          {
            "number": 1,
            "label": "Warehouse hall",
            "category": "area",
            "position_hint": "Main rectangular interior, with an open central aisle running south to north",
            "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-center edge of the hall, immediately inside the entrance",
            "base_layer_decision": "base_structural_unit",
            "render_role": "not_applicable",
            "top_down_legibility": "not_applicable"
          },
          {
            "number": 3,
            "label": "Half-open entrance door",
            "category": "opening",
            "position_hint": "South wall, centered on the main access aisle",
            "base_layer_decision": "base_opening",
            "render_role": "not_applicable",
            "top_down_legibility": "not_applicable"
          },
          {
            "number": 4,
            "label": "West machinery storage",
            "category": "prop",
            "position_hint": "West-middle side of the hall, leaving the central aisle clear",
            "base_layer_decision": "base_persistent_furniture",
            "render_role": "not_applicable",
            "top_down_legibility": "not_applicable"
          },
          {
            "number": 5,
            "label": "East machinery storage",
            "category": "prop",
            "position_hint": "East-middle side of the hall, immediately south of the refuge",
            "base_layer_decision": "base_persistent_furniture",
            "render_role": "not_applicable",
            "top_down_legibility": "not_applicable"
          },
          {
            "number": 6,
            "label": "Broken robot pile",
            "category": "prop",
            "position_hint": "Northwest corner against the north and west walls",
            "base_layer_decision": "base_persistent_furniture",
            "render_role": "not_applicable",
            "top_down_legibility": "not_applicable"
          },
          {
            "number": 7,
            "label": "Secluded refuge",
            "category": "area",
            "position_hint": "Northeast corner, behind the east machinery storage, open toward the central aisle",
            "base_layer_decision": "base_structural_unit",
            "render_role": "not_applicable",
            "top_down_legibility": "not_applicable"
          },
          {
            "number": 8,
            "label": "Nest container",
            "category": "prop",
            "position_hint": "Against the north wall within the northeast refuge; position remains unchanged when uncovered",
            "base_layer_decision": "base_persistent_furniture",
            "render_role": "not_applicable",
            "top_down_legibility": "not_applicable"
          }
        ],
        "transient_markers_to_describe": [
          {
            "number": 9,
            "label": "Movable nest cover",
            "category": "prop",
            "position_hint": "At the nest container in the northeast refuge; conceals the nest before the reveal and is moved aside within the refuge during S64_Shot27",
            "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,
          7
        ],
        "dominant_target_unit_marker_number": null,
        "clean_background_expected": false,
        "diagnostics": [
          "multiple base_structural_unit markers in use_numbered_elements ([1, 2, 7]); dominant_target_unit_marker_number left empty (W19B-1 lock — no lexical disambiguation)"
        ]
      },
      "L100B01": {
        "bg_id": "L100B01",
        "fp_id": "fp_store_exterior",
        "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": "Store footprint",
            "category": "area",
            "position_hint": "northern third, continuing beyond the north crop",
            "base_layer_decision": "base_structural_unit",
            "render_role": "not_applicable",
            "top_down_legibility": "not_applicable"
          },
          {
            "number": 2,
            "label": "Approach path",
            "category": "area",
            "position_hint": "south edge winding north through the forecourt toward the threshold",
            "base_layer_decision": "base_structural_unit",
            "render_role": "not_applicable",
            "top_down_legibility": "not_applicable"
          },
          {
            "number": 3,
            "label": "Entrance threshold",
            "category": "area",
            "position_hint": "north-central forecourt immediately south of the facade breach",
            "base_layer_decision": "base_structural_unit",
            "render_role": "not_applicable",
            "top_down_legibility": "not_applicable"
          },
          {
            "number": 4,
            "label": "Facade breach",
            "category": "opening",
            "position_hint": "central portion of the building's south facade, between the surviving wall segments",
            "base_layer_decision": "base_opening",
            "render_role": "not_applicable",
            "top_down_legibility": "not_applicable"
          },
          {
            "number": 5,
            "label": "Western facade remnant",
            "category": "area",
            "position_hint": "south boundary of the building, west of the breach",
            "base_layer_decision": "base_structural_unit",
            "render_role": "not_applicable",
            "top_down_legibility": "not_applicable"
          },
          {
            "number": 6,
            "label": "Eastern facade remnant",
            "category": "area",
            "position_hint": "south boundary of the building, east of the breach",
            "base_layer_decision": "base_structural_unit",
            "render_role": "not_applicable",
            "top_down_legibility": "not_applicable"
          },
          {
            "number": 7,
            "label": "Rubble field",
            "category": "area",
            "position_hint": "northeast forecourt adjoining the eastern facade remnant",
            "base_layer_decision": "base_structural_unit",
            "render_role": "not_applicable",
            "top_down_legibility": "not_applicable"
          },
          {
            "number": 8,
            "label": "Rubble lookout",
            "category": "area",
            "position_hint": "southern edge of the rubble field, southeast of and overlooking the breach",
            "base_layer_decision": "base_structural_unit",
            "render_role": "not_applicable",
            "top_down_legibility": "not_applicable"
          },
          {
            "number": 9,
            "label": "Western standing pool",
            "category": "area",
            "position_hint": "southwestern forecourt beside the west edge of the approach",
            "base_layer_decision": "base_structural_unit",
            "render_role": "not_applicable",
            "top_down_legibility": "not_applicable"
          },
          {
            "number": 10,
            "label": "Eastern standing pool",
            "category": "area",
            "position_hint": "east-central forecourt between the approach and eastern vegetation",
            "base_layer_decision": "base_structural_unit",
            "render_role": "not_applicable",
            "top_down_legibility": "not_applicable"
          },
          {
            "number": 11,
            "label": "Western tree-growth area",
            "category": "area",
            "position_hint": "western forecourt, north of the western pool",
            "base_layer_decision": "base_structural_unit",
            "render_role": "not_applicable",
            "top_down_legibility": "not_applicable"
          },
          {
            "number": 12,
            "label": "Eastern tree-growth area",
            "category": "area",
            "position_hint": "eastern forecourt, south of the rubble lookout and east of the eastern pool",
            "base_layer_decision": "base_structural_unit",
            "render_role": "not_applicable",
            "top_down_legibility": "not_applicable"
          },
          {
            "number": 13,
            "label": "Flower patch",
            "category": "area",
            "position_hint": "west edge of the entrance threshold, beside the upper approach",
            "base_layer_decision": "base_structural_unit",
            "render_role": "not_applicable",
            "top_down_legibility": "not_applicable"
          },
          {
            "number": 14,
            "label": "Moss-covered ground",
            "category": "area",
            "position_hint": "central-west forecourt between the western tree-growth area and 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,
          13,
          14
        ],
        "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, 13, 14]); dominant_target_unit_marker_number left empty (W19B-1 lock — no lexical disambiguation)"
        ]
      },
      "L101B02": {
        "bg_id": "L101B02",
        "fp_id": "fp_store_ground_floor",
        "use_numbered_elements": [
          1,
          5,
          6,
          7,
          8,
          9,
          10,
          11
        ],
        "ignore_numbered_elements": [
          12,
          13,
          14
        ],
        "base_markers_to_reference": [
          {
            "number": 1,
            "label": "Ground-floor circulation bay",
            "category": "area",
            "position_hint": "central and southern interior, between entrance and escalator landing",
            "base_layer_decision": "base_structural_unit",
            "render_role": "not_applicable",
            "top_down_legibility": "not_applicable"
          },
          {
            "number": 5,
            "label": "Escalator landing",
            "category": "area",
            "position_hint": "north end of number 1, immediately south of number 6",
            "base_layer_decision": "base_structural_unit",
            "render_role": "not_applicable",
            "top_down_legibility": "not_applicable"
          },
          {
            "number": 6,
            "label": "Descending escalator",
            "category": "furniture",
            "position_hint": "north-center, aligned north-south beyond number 5",
            "base_layer_decision": "base_persistent_fixture",
            "render_role": "not_applicable",
            "top_down_legibility": "not_applicable"
          },
          {
            "number": 7,
            "label": "Western wall remnant",
            "category": "area",
            "position_hint": "west flank of the northern escalator approach",
            "base_layer_decision": "base_structural_unit",
            "render_role": "not_applicable",
            "top_down_legibility": "not_applicable"
          },
          {
            "number": 8,
            "label": "Eastern wall remnant",
            "category": "area",
            "position_hint": "east flank of the northern escalator approach",
            "base_layer_decision": "base_structural_unit",
            "render_role": "not_applicable",
            "top_down_legibility": "not_applicable"
          },
          {
            "number": 9,
            "label": "Surviving slab strip",
            "category": "area",
            "position_hint": "east side of number 1, between the central collapse location and the exterior wall",
            "base_layer_decision": "base_structural_unit",
            "render_role": "not_applicable",
            "top_down_legibility": "not_applicable"
          },
          {
            "number": 10,
            "label": "Exterior-wall gap",
            "category": "opening",
            "position_hint": "east perimeter, opposite the northern half of number 1 and beyond number 9",
            "base_layer_decision": "base_opening",
            "render_role": "not_applicable",
            "top_down_legibility": "not_applicable"
          }
        ],
        "transient_markers_to_describe": [
          {
            "number": 11,
            "label": "Active initial floor collapse",
            "category": "opening",
            "position_hint": "central-northern part of number 1, south of number 5 and immediately west of number 9; includes the opening, failing lip, and breaking slab fragments",
            "base_layer_decision": "state_overlay_plot_cue",
            "render_role": "not_applicable",
            "top_down_legibility": "not_applicable"
          }
        ],
        "ignored_state_overlay_markers": [
          {
            "number": 12,
            "label": "Enlarged rescue opening",
            "category": "opening",
            "position_hint": "same center as number 11, enlarged mainly westward and southward while preserving number 9; shared contour for the upper rim and underside",
            "base_layer_decision": "state_overlay_plot_cue",
            "render_role": "not_applicable",
            "top_down_legibility": "not_applicable"
          },
          {
            "number": 13,
            "label": "Lowered rescue rope",
            "category": "prop",
            "position_hint": "east side of number 12 beside number 9, descending through the opening into the basement",
            "base_layer_decision": "state_overlay_transient_object",
            "render_role": "not_applicable",
            "top_down_legibility": "not_applicable"
          },
          {
            "number": 14,
            "label": "Rainwater seepage",
            "category": "prop",
            "position_hint": "gaps above and along the eastern side of number 12, with drips passing through the opening",
            "base_layer_decision": "state_overlay_plot_cue",
            "render_role": "not_applicable",
            "top_down_legibility": "not_applicable"
          }
        ],
        "target_unit_marker_numbers": [
          1,
          5,
          7,
          8,
          9
        ],
        "dominant_target_unit_marker_number": null,
        "clean_background_expected": false,
        "diagnostics": [
          "multiple base_structural_unit markers in use_numbered_elements ([1, 5, 7, 8, 9]); dominant_target_unit_marker_number left empty (W19B-1 lock — no lexical disambiguation)"
        ]
      },
      "L101B01": {
        "bg_id": "L101B01",
        "fp_id": "fp_store_ground_floor",
        "use_numbered_elements": [
          9,
          12,
          13,
          14
        ],
        "ignore_numbered_elements": [
          11
        ],
        "base_markers_to_reference": [
          {
            "number": 9,
            "label": "Surviving slab strip",
            "category": "area",
            "position_hint": "east side of number 1, between the central collapse location and the exterior wall",
            "base_layer_decision": "base_structural_unit",
            "render_role": "not_applicable",
            "top_down_legibility": "not_applicable"
          }
        ],
        "transient_markers_to_describe": [
          {
            "number": 12,
            "label": "Enlarged rescue opening",
            "category": "opening",
            "position_hint": "same center as number 11, enlarged mainly westward and southward while preserving number 9; shared contour for the upper rim and underside",
            "base_layer_decision": "state_overlay_plot_cue",
            "render_role": "not_applicable",
            "top_down_legibility": "not_applicable"
          },
          {
            "number": 13,
            "label": "Lowered rescue rope",
            "category": "prop",
            "position_hint": "east side of number 12 beside number 9, descending through the opening into the basement",
            "base_layer_decision": "state_overlay_transient_object",
            "render_role": "not_applicable",
            "top_down_legibility": "not_applicable"
          },
          {
            "number": 14,
            "label": "Rainwater seepage",
            "category": "prop",
            "position_hint": "gaps above and along the eastern side of number 12, with drips passing through the opening",
            "base_layer_decision": "state_overlay_plot_cue",
            "render_role": "not_applicable",
            "top_down_legibility": "not_applicable"
          }
        ],
        "ignored_state_overlay_markers": [
          {
            "number": 11,
            "label": "Active initial floor collapse",
            "category": "opening",
            "position_hint": "central-northern part of number 1, south of number 5 and immediately west of number 9; includes the opening, failing lip, and breaking slab fragments",
            "base_layer_decision": "state_overlay_plot_cue",
            "render_role": "not_applicable",
            "top_down_legibility": "not_applicable"
          }
        ],
        "target_unit_marker_numbers": [
          9
        ],
        "dominant_target_unit_marker_number": 9,
        "clean_background_expected": false,
        "diagnostics": []
      },
      "L111B03": {
        "bg_id": "L111B03",
        "fp_id": "fp_truck_layout",
        "use_numbered_elements": [
          2,
          13,
          17,
          18
        ],
        "ignore_numbered_elements": [
          19,
          20,
          21
        ],
        "base_markers_to_reference": [
          {
            "number": 2,
            "label": "Cargo compartment",
            "category": "area",
            "position_hint": "rear portion of the vehicle, below the cabin",
            "base_layer_decision": "base_structural_unit",
            "render_role": "not_applicable",
            "top_down_legibility": "not_applicable"
          },
          {
            "number": 13,
            "label": "Cargo side window",
            "category": "opening",
            "position_hint": "left cargo wall, rear half of compartment",
            "base_layer_decision": "base_opening",
            "render_role": "not_applicable",
            "top_down_legibility": "not_applicable"
          }
        ],
        "transient_markers_to_describe": [
          {
            "number": 17,
            "label": "Localized injury blood",
            "category": "prop",
            "position_hint": "occupant staging space on the rear-left cargo floor near number 13; restricted to the injured occupant and contacting clothing, not a floor trail",
            "base_layer_decision": "state_overlay_plot_cue",
            "render_role": "not_applicable",
            "top_down_legibility": "not_applicable"
          },
          {
            "number": 18,
            "label": "Rain at exterior openings",
            "category": "prop",
            "position_hint": "outside cargo window number 13 and beyond boarding doorway number 14",
            "base_layer_decision": "state_overlay_plot_cue",
            "render_role": "not_applicable",
            "top_down_legibility": "not_applicable"
          }
        ],
        "ignored_state_overlay_markers": [
          {
            "number": 19,
            "label": "Incoming flashlight beams",
            "category": "prop",
            "position_hint": "from exterior strip number 16 through doorway number 14 into cargo compartment number 2",
            "base_layer_decision": "state_overlay_plot_cue",
            "render_role": "not_applicable",
            "top_down_legibility": "not_applicable"
          },
          {
            "number": 20,
            "label": "Boarding door open state",
            "category": "prop",
            "position_hint": "sliding leaf retracted along the right cargo wall, exposing doorway number 14",
            "base_layer_decision": "state_overlay_plot_cue",
            "render_role": "not_applicable",
            "top_down_legibility": "not_applicable"
          },
          {
            "number": 21,
            "label": "Rescue silhouettes",
            "category": "prop",
            "position_hint": "adult male silhouettes outside number 14 within exterior access strip number 16",
            "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": false,
        "diagnostics": []
      },
      "L111B02": {
        "bg_id": "L111B02",
        "fp_id": "fp_truck_layout",
        "use_numbered_elements": [
          2,
          3,
          14,
          16,
          17,
          18,
          19,
          20,
          21
        ],
        "ignore_numbered_elements": [],
        "base_markers_to_reference": [
          {
            "number": 2,
            "label": "Cargo compartment",
            "category": "area",
            "position_hint": "rear portion of the vehicle, below the cabin",
            "base_layer_decision": "base_structural_unit",
            "render_role": "not_applicable",
            "top_down_legibility": "not_applicable"
          },
          {
            "number": 3,
            "label": "Boarding sill",
            "category": "area",
            "position_hint": "right cargo wall, directly within the sliding doorway",
            "base_layer_decision": "base_structural_unit",
            "render_role": "not_applicable",
            "top_down_legibility": "not_applicable"
          },
          {
            "number": 14,
            "label": "Sliding boarding door",
            "category": "opening",
            "position_hint": "right cargo wall, slightly forward of the opposite cargo window",
            "base_layer_decision": "base_opening",
            "render_role": "not_applicable",
            "top_down_legibility": "not_applicable"
          },
          {
            "number": 16,
            "label": "Exterior access strip",
            "category": "area",
            "position_hint": "immediately outside the right-side boarding doorway",
            "base_layer_decision": "base_structural_unit",
            "render_role": "not_applicable",
            "top_down_legibility": "not_applicable"
          }
        ],
        "transient_markers_to_describe": [
          {
            "number": 17,
            "label": "Localized injury blood",
            "category": "prop",
            "position_hint": "occupant staging space on the rear-left cargo floor near number 13; restricted to the injured occupant and contacting clothing, not a floor trail",
            "base_layer_decision": "state_overlay_plot_cue",
            "render_role": "not_applicable",
            "top_down_legibility": "not_applicable"
          },
          {
            "number": 18,
            "label": "Rain at exterior openings",
            "category": "prop",
            "position_hint": "outside cargo window number 13 and beyond boarding doorway number 14",
            "base_layer_decision": "state_overlay_plot_cue",
            "render_role": "not_applicable",
            "top_down_legibility": "not_applicable"
          },
          {
            "number": 19,
            "label": "Incoming flashlight beams",
            "category": "prop",
            "position_hint": "from exterior strip number 16 through doorway number 14 into cargo compartment number 2",
            "base_layer_decision": "state_overlay_plot_cue",
            "render_role": "not_applicable",
            "top_down_legibility": "not_applicable"
          },
          {
            "number": 20,
            "label": "Boarding door open state",
            "category": "prop",
            "position_hint": "sliding leaf retracted along the right cargo wall, exposing doorway number 14",
            "base_layer_decision": "state_overlay_plot_cue",
            "render_role": "not_applicable",
            "top_down_legibility": "not_applicable"
          },
          {
            "number": 21,
            "label": "Rescue silhouettes",
            "category": "prop",
            "position_hint": "adult male silhouettes outside number 14 within exterior access strip number 16",
            "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,
          16
        ],
        "dominant_target_unit_marker_number": null,
        "clean_background_expected": false,
        "diagnostics": [
          "multiple base_structural_unit markers in use_numbered_elements ([2, 3, 16]); dominant_target_unit_marker_number left empty (W19B-1 lock — no lexical disambiguation)"
        ]
      },
      "L115B02": {
        "bg_id": "L115B02",
        "fp_id": "fp_mokpo_clinic_ward",
        "use_numbered_elements": [
          1,
          2,
          3,
          4,
          5,
          6,
          7,
          8
        ],
        "ignore_numbered_elements": [],
        "base_markers_to_reference": [
          {
            "number": 1,
            "label": "Clinic ward",
            "category": "area",
            "position_hint": "entire rectangular enclosure; marker inside southeast perimeter",
            "base_layer_decision": "base_structural_unit",
            "render_role": "not_applicable",
            "top_down_legibility": "not_applicable"
          },
          {
            "number": 2,
            "label": "Patient area",
            "category": "area",
            "position_hint": "northwest portion of ward; marker on clear floor west of bed",
            "base_layer_decision": "base_structural_unit",
            "render_role": "not_applicable",
            "top_down_legibility": "not_applicable"
          },
          {
            "number": 3,
            "label": "Bedside gathering area",
            "category": "area",
            "position_hint": "center and east of ward, adjoining the bed's east side and foot",
            "base_layer_decision": "base_structural_unit",
            "render_role": "not_applicable",
            "top_down_legibility": "not_applicable"
          },
          {
            "number": 4,
            "label": "Entrance circulation",
            "category": "area",
            "position_hint": "southwest floor connecting west-wall doorway to bedside",
            "base_layer_decision": "base_structural_unit",
            "render_role": "not_applicable",
            "top_down_legibility": "not_applicable"
          },
          {
            "number": 5,
            "label": "Hospital bed",
            "category": "furniture",
            "position_hint": "northwest patient area, head north and foot south",
            "base_layer_decision": "base_persistent_furniture",
            "render_role": "not_applicable",
            "top_down_legibility": "not_applicable"
          },
          {
            "number": 6,
            "label": "Ward entrance",
            "category": "opening",
            "position_hint": "lower west wall, inward swing toward southwest corner",
            "base_layer_decision": "base_opening",
            "render_role": "not_applicable",
            "top_down_legibility": "not_applicable"
          },
          {
            "number": 7,
            "label": "Ward window",
            "category": "opening",
            "position_hint": "eastern half of north wall",
            "base_layer_decision": "base_opening",
            "render_role": "not_applicable",
            "top_down_legibility": "not_applicable"
          },
          {
            "number": 8,
            "label": "Bedside cabinet",
            "category": "furniture",
            "position_hint": "immediately east of hospital bed head",
            "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)"
        ]
      },
      "L115B01": {
        "bg_id": "L115B01",
        "fp_id": "fp_mokpo_clinic_ward",
        "use_numbered_elements": [
          1,
          2,
          3,
          4,
          5,
          6,
          7,
          8
        ],
        "ignore_numbered_elements": [],
        "base_markers_to_reference": [
          {
            "number": 1,
            "label": "Clinic ward",
            "category": "area",
            "position_hint": "entire rectangular enclosure; marker inside southeast perimeter",
            "base_layer_decision": "base_structural_unit",
            "render_role": "not_applicable",
            "top_down_legibility": "not_applicable"
          },
          {
            "number": 2,
            "label": "Patient area",
            "category": "area",
            "position_hint": "northwest portion of ward; marker on clear floor west of bed",
            "base_layer_decision": "base_structural_unit",
            "render_role": "not_applicable",
            "top_down_legibility": "not_applicable"
          },
          {
            "number": 3,
            "label": "Bedside gathering area",
            "category": "area",
            "position_hint": "center and east of ward, adjoining the bed's east side and foot",
            "base_layer_decision": "base_structural_unit",
            "render_role": "not_applicable",
            "top_down_legibility": "not_applicable"
          },
          {
            "number": 4,
            "label": "Entrance circulation",
            "category": "area",
            "position_hint": "southwest floor connecting west-wall doorway to bedside",
            "base_layer_decision": "base_structural_unit",
            "render_role": "not_applicable",
            "top_down_legibility": "not_applicable"
          },
          {
            "number": 5,
            "label": "Hospital bed",
            "category": "furniture",
            "position_hint": "northwest patient area, head north and foot south",
            "base_layer_decision": "base_persistent_furniture",
            "render_role": "not_applicable",
            "top_down_legibility": "not_applicable"
          },
          {
            "number": 6,
            "label": "Ward entrance",
            "category": "opening",
            "position_hint": "lower west wall, inward swing toward southwest corner",
            "base_layer_decision": "base_opening",
            "render_role": "not_applicable",
            "top_down_legibility": "not_applicable"
          },
          {
            "number": 7,
            "label": "Ward window",
            "category": "opening",
            "position_hint": "eastern half of north wall",
            "base_layer_decision": "base_opening",
            "render_role": "not_applicable",
            "top_down_legibility": "not_applicable"
          },
          {
            "number": 8,
            "label": "Bedside cabinet",
            "category": "furniture",
            "position_hint": "immediately east of hospital bed head",
            "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)"
        ]
      },
      "L119B05": {
        "bg_id": "L119B05",
        "fp_id": "fp_hangar_and_cabin",
        "use_numbered_elements": [
          1,
          2,
          3,
          4,
          6,
          7,
          8,
          9,
          10,
          11,
          12
        ],
        "ignore_numbered_elements": [
          13,
          14,
          15,
          16,
          17,
          18,
          19,
          20,
          21,
          22
        ],
        "base_markers_to_reference": [
          {
            "number": 1,
            "label": "West aircraft bay",
            "category": "area",
            "position_hint": "west half of hangar, beside the central aisle",
            "base_layer_decision": "base_structural_unit",
            "render_role": "not_applicable",
            "top_down_legibility": "not_applicable"
          },
          {
            "number": 2,
            "label": "East aircraft bay",
            "category": "area",
            "position_hint": "east half of hangar, beside the central aisle",
            "base_layer_decision": "base_structural_unit",
            "render_role": "not_applicable",
            "top_down_legibility": "not_applicable"
          },
          {
            "number": 3,
            "label": "Central circulation aisle",
            "category": "area",
            "position_hint": "north-south center of hangar, with a broad clear southern foreground",
            "base_layer_decision": "base_structural_unit",
            "render_role": "not_applicable",
            "top_down_legibility": "not_applicable"
          },
          {
            "number": 4,
            "label": "Entrance threshold",
            "category": "area",
            "position_hint": "south end of central aisle at the hangar facade",
            "base_layer_decision": "base_structural_unit",
            "render_role": "not_applicable",
            "top_down_legibility": "not_applicable"
          },
          {
            "number": 6,
            "label": "Wide hangar doorway",
            "category": "opening",
            "position_hint": "center of south hangar wall, aligned with threshold and aisle",
            "base_layer_decision": "base_opening",
            "render_role": "not_applicable",
            "top_down_legibility": "not_applicable"
          },
          {
            "number": 7,
            "label": "Damaged rear aircraft",
            "category": "prop",
            "position_hint": "northwest rear bay, clear of the central aisle",
            "base_layer_decision": "base_persistent_furniture",
            "render_role": "not_applicable",
            "top_down_legibility": "not_applicable"
          },
          {
            "number": 8,
            "label": "Accessible repair aircraft",
            "category": "prop",
            "position_hint": "southwest front bay, nose facing south beside the clear foreground",
            "base_layer_decision": "base_persistent_furniture",
            "render_role": "not_applicable",
            "top_down_legibility": "not_applicable"
          },
          {
            "number": 9,
            "label": "East bay aircraft",
            "category": "prop",
            "position_hint": "northeast bay, nose facing south",
            "base_layer_decision": "base_persistent_furniture",
            "render_role": "not_applicable",
            "top_down_legibility": "not_applicable"
          },
          {
            "number": 10,
            "label": "West overhead bulb fixture",
            "category": "prop",
            "position_hint": "overhead at the southwest bay edge near aircraft 8",
            "base_layer_decision": "base_persistent_fixture",
            "render_role": "not_applicable",
            "top_down_legibility": "not_applicable"
          },
          {
            "number": 11,
            "label": "East overhead bulb fixture",
            "category": "prop",
            "position_hint": "overhead at the southeast bay edge",
            "base_layer_decision": "base_persistent_fixture",
            "render_role": "not_applicable",
            "top_down_legibility": "not_applicable"
          },
          {
            "number": 12,
            "label": "Rear overhead bulb fixture",
            "category": "prop",
            "position_hint": "overhead near the northern end of the central aisle",
            "base_layer_decision": "base_persistent_fixture",
            "render_role": "not_applicable",
            "top_down_legibility": "not_applicable"
          }
        ],
        "transient_markers_to_describe": [],
        "ignored_state_overlay_markers": [
          {
            "number": 19,
            "label": "Aircraft startup exhaust",
            "category": "prop",
            "position_hint": "localized around engine outlets of aircraft 8 and 9, spreading into adjacent bay space",
            "base_layer_decision": "state_overlay_plot_cue",
            "render_role": "not_applicable",
            "top_down_legibility": "not_applicable"
          },
          {
            "number": 20,
            "label": "Unstable bulb output",
            "category": "prop",
            "position_hint": "operating bulbs at fixtures 10 and 12 during aircraft startup",
            "base_layer_decision": "state_overlay_plot_cue",
            "render_role": "not_applicable",
            "top_down_legibility": "not_applicable"
          },
          {
            "number": 21,
            "label": "Single burst bulb",
            "category": "prop",
            "position_hint": "bulb at fixture 11 only; the fixture position remains unchanged",
            "base_layer_decision": "state_overlay_plot_cue",
            "render_role": "not_applicable",
            "top_down_legibility": "not_applicable"
          },
          {
            "number": 22,
            "label": "Violet flower gift",
            "category": "prop",
            "position_hint": "held in a passenger's palm near bench 15 and window 16 during the flight close-up",
            "base_layer_decision": "state_overlay_transient_object",
            "render_role": "not_applicable",
            "top_down_legibility": "not_applicable"
          }
        ],
        "target_unit_marker_numbers": [
          1,
          2,
          3,
          4
        ],
        "dominant_target_unit_marker_number": null,
        "clean_background_expected": true,
        "diagnostics": [
          "marker #13 in ignore_numbered_elements is a base layer marker ('base_structural_unit'); structural elements normally remain in use",
          "marker #14 in ignore_numbered_elements is a base layer marker ('base_persistent_furniture'); structural elements normally remain in use",
          "marker #15 in ignore_numbered_elements is a base layer marker ('base_persistent_furniture'); structural elements normally remain in use",
          "marker #16 in ignore_numbered_elements is a base layer marker ('base_opening'); structural elements normally remain in use",
          "marker #17 in ignore_numbered_elements is a base layer marker ('base_opening'); structural elements normally remain in use",
          "marker #18 in ignore_numbered_elements is a base layer marker ('base_opening'); structural elements normally remain in use",
          "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)"
        ]
      },
      "L119B03": {
        "bg_id": "L119B03",
        "fp_id": "fp_hangar_and_cabin",
        "use_numbered_elements": [
          1,
          3,
          4,
          5,
          6,
          8
        ],
        "ignore_numbered_elements": [
          13,
          14,
          15,
          16,
          17,
          18,
          19,
          20,
          21,
          22
        ],
        "base_markers_to_reference": [
          {
            "number": 1,
            "label": "West aircraft bay",
            "category": "area",
            "position_hint": "west half of hangar, beside the central aisle",
            "base_layer_decision": "base_structural_unit",
            "render_role": "not_applicable",
            "top_down_legibility": "not_applicable"
          },
          {
            "number": 3,
            "label": "Central circulation aisle",
            "category": "area",
            "position_hint": "north-south center of hangar, with a broad clear southern foreground",
            "base_layer_decision": "base_structural_unit",
            "render_role": "not_applicable",
            "top_down_legibility": "not_applicable"
          },
          {
            "number": 4,
            "label": "Entrance threshold",
            "category": "area",
            "position_hint": "south end of central aisle at the hangar facade",
            "base_layer_decision": "base_structural_unit",
            "render_role": "not_applicable",
            "top_down_legibility": "not_applicable"
          },
          {
            "number": 5,
            "label": "Exterior approach apron",
            "category": "area",
            "position_hint": "immediately south of the hangar doorway",
            "base_layer_decision": "base_structural_unit",
            "render_role": "not_applicable",
            "top_down_legibility": "not_applicable"
          },
          {
            "number": 6,
            "label": "Wide hangar doorway",
            "category": "opening",
            "position_hint": "center of south hangar wall, aligned with threshold and aisle",
            "base_layer_decision": "base_opening",
            "render_role": "not_applicable",
            "top_down_legibility": "not_applicable"
          },
          {
            "number": 8,
            "label": "Accessible repair aircraft",
            "category": "prop",
            "position_hint": "southwest front bay, nose facing south beside the clear foreground",
            "base_layer_decision": "base_persistent_furniture",
            "render_role": "not_applicable",
            "top_down_legibility": "not_applicable"
          }
        ],
        "transient_markers_to_describe": [],
        "ignored_state_overlay_markers": [
          {
            "number": 19,
            "label": "Aircraft startup exhaust",
            "category": "prop",
            "position_hint": "localized around engine outlets of aircraft 8 and 9, spreading into adjacent bay space",
            "base_layer_decision": "state_overlay_plot_cue",
            "render_role": "not_applicable",
            "top_down_legibility": "not_applicable"
          },
          {
            "number": 20,
            "label": "Unstable bulb output",
            "category": "prop",
            "position_hint": "operating bulbs at fixtures 10 and 12 during aircraft startup",
            "base_layer_decision": "state_overlay_plot_cue",
            "render_role": "not_applicable",
            "top_down_legibility": "not_applicable"
          },
          {
            "number": 21,
            "label": "Single burst bulb",
            "category": "prop",
            "position_hint": "bulb at fixture 11 only; the fixture position remains unchanged",
            "base_layer_decision": "state_overlay_plot_cue",
            "render_role": "not_applicable",
            "top_down_legibility": "not_applicable"
          },
          {
            "number": 22,
            "label": "Violet flower gift",
            "category": "prop",
            "position_hint": "held in a passenger's palm near bench 15 and window 16 during the flight close-up",
            "base_layer_decision": "state_overlay_transient_object",
            "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": [
          "marker #13 in ignore_numbered_elements is a base layer marker ('base_structural_unit'); structural elements normally remain in use",
          "marker #14 in ignore_numbered_elements is a base layer marker ('base_persistent_furniture'); structural elements normally remain in use",
          "marker #15 in ignore_numbered_elements is a base layer marker ('base_persistent_furniture'); structural elements normally remain in use",
          "marker #16 in ignore_numbered_elements is a base layer marker ('base_opening'); structural elements normally remain in use",
          "marker #17 in ignore_numbered_elements is a base layer marker ('base_opening'); structural elements normally remain in use",
          "marker #18 in ignore_numbered_elements is a base layer marker ('base_opening'); structural elements normally remain in use",
          "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)"
        ]
      },
      "L119B04": {
        "bg_id": "L119B04",
        "fp_id": "fp_hangar_and_cabin",
        "use_numbered_elements": [
          1,
          2,
          3,
          7,
          8,
          9,
          10,
          11,
          12,
          19,
          20,
          21
        ],
        "ignore_numbered_elements": [
          13,
          14,
          15,
          16,
          17,
          18,
          22
        ],
        "base_markers_to_reference": [
          {
            "number": 1,
            "label": "West aircraft bay",
            "category": "area",
            "position_hint": "west half of hangar, beside the central aisle",
            "base_layer_decision": "base_structural_unit",
            "render_role": "not_applicable",
            "top_down_legibility": "not_applicable"
          },
          {
            "number": 2,
            "label": "East aircraft bay",
            "category": "area",
            "position_hint": "east half of hangar, beside the central aisle",
            "base_layer_decision": "base_structural_unit",
            "render_role": "not_applicable",
            "top_down_legibility": "not_applicable"
          },
          {
            "number": 3,
            "label": "Central circulation aisle",
            "category": "area",
            "position_hint": "north-south center of hangar, with a broad clear southern foreground",
            "base_layer_decision": "base_structural_unit",
            "render_role": "not_applicable",
            "top_down_legibility": "not_applicable"
          },
          {
            "number": 7,
            "label": "Damaged rear aircraft",
            "category": "prop",
            "position_hint": "northwest rear bay, clear of the central aisle",
            "base_layer_decision": "base_persistent_furniture",
            "render_role": "not_applicable",
            "top_down_legibility": "not_applicable"
          },
          {
            "number": 8,
            "label": "Accessible repair aircraft",
            "category": "prop",
            "position_hint": "southwest front bay, nose facing south beside the clear foreground",
            "base_layer_decision": "base_persistent_furniture",
            "render_role": "not_applicable",
            "top_down_legibility": "not_applicable"
          },
          {
            "number": 9,
            "label": "East bay aircraft",
            "category": "prop",
            "position_hint": "northeast bay, nose facing south",
            "base_layer_decision": "base_persistent_furniture",
            "render_role": "not_applicable",
            "top_down_legibility": "not_applicable"
          },
          {
            "number": 10,
            "label": "West overhead bulb fixture",
            "category": "prop",
            "position_hint": "overhead at the southwest bay edge near aircraft 8",
            "base_layer_decision": "base_persistent_fixture",
            "render_role": "not_applicable",
            "top_down_legibility": "not_applicable"
          },
          {
            "number": 11,
            "label": "East overhead bulb fixture",
            "category": "prop",
            "position_hint": "overhead at the southeast bay edge",
            "base_layer_decision": "base_persistent_fixture",
            "render_role": "not_applicable",
            "top_down_legibility": "not_applicable"
          },
          {
            "number": 12,
            "label": "Rear overhead bulb fixture",
            "category": "prop",
            "position_hint": "overhead near the northern end of the central aisle",
            "base_layer_decision": "base_persistent_fixture",
            "render_role": "not_applicable",
            "top_down_legibility": "not_applicable"
          }
        ],
        "transient_markers_to_describe": [
          {
            "number": 19,
            "label": "Aircraft startup exhaust",
            "category": "prop",
            "position_hint": "localized around engine outlets of aircraft 8 and 9, spreading into adjacent bay space",
            "base_layer_decision": "state_overlay_plot_cue",
            "render_role": "not_applicable",
            "top_down_legibility": "not_applicable"
          },
          {
            "number": 20,
            "label": "Unstable bulb output",
            "category": "prop",
            "position_hint": "operating bulbs at fixtures 10 and 12 during aircraft startup",
            "base_layer_decision": "state_overlay_plot_cue",
            "render_role": "not_applicable",
            "top_down_legibility": "not_applicable"
          },
          {
            "number": 21,
            "label": "Single burst bulb",
            "category": "prop",
            "position_hint": "bulb at fixture 11 only; the fixture position remains unchanged",
            "base_layer_decision": "state_overlay_plot_cue",
            "render_role": "not_applicable",
            "top_down_legibility": "not_applicable"
          }
        ],
        "ignored_state_overlay_markers": [
          {
            "number": 22,
            "label": "Violet flower gift",
            "category": "prop",
            "position_hint": "held in a passenger's palm near bench 15 and window 16 during the flight close-up",
            "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": [
          "marker #13 in ignore_numbered_elements is a base layer marker ('base_structural_unit'); structural elements normally remain in use",
          "marker #14 in ignore_numbered_elements is a base layer marker ('base_persistent_furniture'); structural elements normally remain in use",
          "marker #15 in ignore_numbered_elements is a base layer marker ('base_persistent_furniture'); structural elements normally remain in use",
          "marker #16 in ignore_numbered_elements is a base layer marker ('base_opening'); structural elements normally remain in use",
          "marker #17 in ignore_numbered_elements is a base layer marker ('base_opening'); structural elements normally remain in use",
          "marker #18 in ignore_numbered_elements is a base layer marker ('base_opening'); structural elements normally remain in use",
          "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)"
        ]
      },
      "L119B01": {
        "bg_id": "L119B01",
        "fp_id": "fp_hangar_and_cabin",
        "use_numbered_elements": [
          13,
          15,
          16,
          22
        ],
        "ignore_numbered_elements": [
          1,
          2,
          3,
          4,
          5,
          6,
          7,
          8,
          9,
          10,
          11,
          12,
          14,
          17,
          18,
          19,
          20,
          21
        ],
        "base_markers_to_reference": [
          {
            "number": 13,
            "label": "Helicopter passenger compartment",
            "category": "area",
            "position_hint": "detached right-hand inset, centered between the passenger benches",
            "base_layer_decision": "base_structural_unit",
            "render_role": "not_applicable",
            "top_down_legibility": "not_applicable"
          },
          {
            "number": 15,
            "label": "East passenger bench",
            "category": "furniture",
            "position_hint": "east side of cabin inset beneath the east window",
            "base_layer_decision": "base_persistent_furniture",
            "render_role": "not_applicable",
            "top_down_legibility": "not_applicable"
          },
          {
            "number": 16,
            "label": "East cabin window",
            "category": "opening",
            "position_hint": "east cabin boundary above the forward part of bench 15",
            "base_layer_decision": "base_opening",
            "render_role": "not_applicable",
            "top_down_legibility": "not_applicable"
          }
        ],
        "transient_markers_to_describe": [
          {
            "number": 22,
            "label": "Violet flower gift",
            "category": "prop",
            "position_hint": "held in a passenger's palm near bench 15 and window 16 during the flight close-up",
            "base_layer_decision": "state_overlay_transient_object",
            "render_role": "not_applicable",
            "top_down_legibility": "not_applicable"
          }
        ],
        "ignored_state_overlay_markers": [
          {
            "number": 19,
            "label": "Aircraft startup exhaust",
            "category": "prop",
            "position_hint": "localized around engine outlets of aircraft 8 and 9, spreading into adjacent bay space",
            "base_layer_decision": "state_overlay_plot_cue",
            "render_role": "not_applicable",
            "top_down_legibility": "not_applicable"
          },
          {
            "number": 20,
            "label": "Unstable bulb output",
            "category": "prop",
            "position_hint": "operating bulbs at fixtures 10 and 12 during aircraft startup",
            "base_layer_decision": "state_overlay_plot_cue",
            "render_role": "not_applicable",
            "top_down_legibility": "not_applicable"
          },
          {
            "number": 21,
            "label": "Single burst bulb",
            "category": "prop",
            "position_hint": "bulb at fixture 11 only; the fixture position remains unchanged",
            "base_layer_decision": "state_overlay_plot_cue",
            "render_role": "not_applicable",
            "top_down_legibility": "not_applicable"
          }
        ],
        "target_unit_marker_numbers": [
          13
        ],
        "dominant_target_unit_marker_number": 13,
        "clean_background_expected": false,
        "diagnostics": [
          "marker #1 in ignore_numbered_elements is a base layer marker ('base_structural_unit'); structural elements normally remain in use",
          "marker #2 in ignore_numbered_elements is a base layer marker ('base_structural_unit'); structural elements normally remain in use",
          "marker #3 in ignore_numbered_elements is a base layer marker ('base_structural_unit'); structural elements normally remain in use",
          "marker #4 in ignore_numbered_elements is a base layer marker ('base_structural_unit'); structural elements normally remain in use",
          "marker #5 in ignore_numbered_elements is a base layer marker ('base_structural_unit'); structural elements normally remain in use",
          "marker #6 in ignore_numbered_elements is a base layer marker ('base_opening'); structural elements normally remain in use",
          "marker #7 in ignore_numbered_elements is a base layer marker ('base_persistent_furniture'); structural elements normally remain in use",
          "marker #8 in ignore_numbered_elements is a base layer marker ('base_persistent_furniture'); structural elements normally remain in use",
          "marker #9 in ignore_numbered_elements is a base layer marker ('base_persistent_furniture'); structural elements normally remain in use",
          "marker #10 in ignore_numbered_elements is a base layer marker ('base_persistent_fixture'); structural elements normally remain in use",
          "marker #11 in ignore_numbered_elements is a base layer marker ('base_persistent_fixture'); structural elements normally remain in use",
          "marker #12 in ignore_numbered_elements is a base layer marker ('base_persistent_fixture'); structural elements normally remain in use",
          "marker #14 in ignore_numbered_elements is a base layer marker ('base_persistent_furniture'); structural elements normally remain in use",
          "marker #17 in ignore_numbered_elements is a base layer marker ('base_opening'); structural elements normally remain in use",
          "marker #18 in ignore_numbered_elements is a base layer marker ('base_opening'); structural elements normally remain in use"
        ]
      },
      "L123B02": {
        "bg_id": "L123B02",
        "fp_id": "fp_crew_cabin",
        "use_numbered_elements": [
          1,
          4,
          5
        ],
        "ignore_numbered_elements": [
          6
        ],
        "base_markers_to_reference": [
          {
            "number": 1,
            "label": "Crew cabin",
            "category": "area",
            "position_hint": "main enclosed resting area, central open floor",
            "base_layer_decision": "base_structural_unit",
            "render_role": "not_applicable",
            "top_down_legibility": "not_applicable"
          },
          {
            "number": 4,
            "label": "Resting sofa",
            "category": "furniture",
            "position_hint": "against the top wall, long axis left to right, facing the central floor",
            "base_layer_decision": "base_persistent_furniture",
            "render_role": "not_applicable",
            "top_down_legibility": "not_applicable"
          },
          {
            "number": 5,
            "label": "Adjacent intact bulkhead",
            "category": "area",
            "position_hint": "right-hand cabin boundary beside the right end of 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": 6,
            "label": "Severe ship-roll composition",
            "category": "area",
            "position_hint": "background-wide temporary roll affecting the apparent orientation of the floor and bulkheads together; no deformation or surface marks",
            "base_layer_decision": "state_overlay_plot_cue",
            "render_role": "not_applicable",
            "top_down_legibility": "not_applicable"
          }
        ],
        "target_unit_marker_numbers": [
          1,
          5
        ],
        "dominant_target_unit_marker_number": null,
        "clean_background_expected": true,
        "diagnostics": [
          "multiple base_structural_unit markers in use_numbered_elements ([1, 5]); dominant_target_unit_marker_number left empty (W19B-1 lock — no lexical disambiguation)"
        ]
      },
      "L123B01": {
        "bg_id": "L123B01",
        "fp_id": "fp_crew_cabin",
        "use_numbered_elements": [
          1,
          4,
          5,
          6
        ],
        "ignore_numbered_elements": [],
        "base_markers_to_reference": [
          {
            "number": 1,
            "label": "Crew cabin",
            "category": "area",
            "position_hint": "main enclosed resting area, central open floor",
            "base_layer_decision": "base_structural_unit",
            "render_role": "not_applicable",
            "top_down_legibility": "not_applicable"
          },
          {
            "number": 4,
            "label": "Resting sofa",
            "category": "furniture",
            "position_hint": "against the top wall, long axis left to right, facing the central floor",
            "base_layer_decision": "base_persistent_furniture",
            "render_role": "not_applicable",
            "top_down_legibility": "not_applicable"
          },
          {
            "number": 5,
            "label": "Adjacent intact bulkhead",
            "category": "area",
            "position_hint": "right-hand cabin boundary beside the right end of the sofa",
            "base_layer_decision": "base_structural_unit",
            "render_role": "not_applicable",
            "top_down_legibility": "not_applicable"
          }
        ],
        "transient_markers_to_describe": [
          {
            "number": 6,
            "label": "Severe ship-roll composition",
            "category": "area",
            "position_hint": "background-wide temporary roll affecting the apparent orientation of the floor and bulkheads together; no deformation or surface marks",
            "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
        ],
        "dominant_target_unit_marker_number": null,
        "clean_background_expected": false,
        "diagnostics": [
          "multiple base_structural_unit markers in use_numbered_elements ([1, 5]); dominant_target_unit_marker_number left empty (W19B-1 lock — no lexical disambiguation)"
        ]
      },
      "L122B01": {
        "bg_id": "L122B01",
        "fp_id": "fp_ship_deck",
        "use_numbered_elements": [
          1,
          2,
          3,
          4,
          5,
          6,
          7,
          8,
          9
        ],
        "ignore_numbered_elements": [],
        "base_markers_to_reference": [
          {
            "number": 1,
            "label": "Working deck",
            "category": "area",
            "position_hint": "whole elongated footprint; marker in the open aft deck portion",
            "base_layer_decision": "base_structural_unit",
            "render_role": "not_applicable",
            "top_down_legibility": "not_applicable"
          },
          {
            "number": 2,
            "label": "Clear deck passage",
            "category": "area",
            "position_hint": "central longitudinal corridor extending toward the right-hand sea edge",
            "base_layer_decision": "base_structural_unit",
            "render_role": "not_applicable",
            "top_down_legibility": "not_applicable"
          },
          {
            "number": 3,
            "label": "Cargo stowage area",
            "category": "area",
            "position_hint": "left-hand middle deck, outside the clear passage",
            "base_layer_decision": "base_structural_unit",
            "render_role": "not_applicable",
            "top_down_legibility": "not_applicable"
          },
          {
            "number": 4,
            "label": "Overboard threshold",
            "category": "area",
            "position_hint": "right-hand middle perimeter immediately outboard of number 5",
            "base_layer_decision": "base_structural_unit",
            "render_role": "not_applicable",
            "top_down_legibility": "not_applicable"
          },
          {
            "number": 5,
            "label": "Edge support post",
            "category": "prop",
            "position_hint": "right-hand middle deck, immediately inboard of number 4",
            "base_layer_decision": "base_persistent_fixture",
            "render_role": "not_applicable",
            "top_down_legibility": "not_applicable"
          },
          {
            "number": 6,
            "label": "Forward support post",
            "category": "prop",
            "position_hint": "forward of number 5 along the right-hand deck side",
            "base_layer_decision": "base_persistent_fixture",
            "render_role": "not_applicable",
            "top_down_legibility": "not_applicable"
          },
          {
            "number": 7,
            "label": "Immediate sea boundary",
            "category": "area",
            "position_hint": "narrow exterior margin adjoining the deck perimeter",
            "base_layer_decision": "base_structural_unit",
            "render_role": "not_applicable",
            "top_down_legibility": "not_applicable"
          }
        ],
        "transient_markers_to_describe": [
          {
            "number": 8,
            "label": "Unsecured heavy cargo",
            "category": "prop",
            "position_hint": "at and immediately around number 3; any displacement remains a scene-state overlay rather than a fixed deck anchor",
            "base_layer_decision": "state_overlay_transient_object",
            "render_role": "not_applicable",
            "top_down_legibility": "not_applicable"
          },
          {
            "number": 9,
            "label": "Typhoon rain and wave spray",
            "category": "prop",
            "position_hint": "across the exposed deck and immediate sea boundary, intermittently obscuring numbers 4 and 5",
            "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,
          7
        ],
        "dominant_target_unit_marker_number": null,
        "clean_background_expected": false,
        "diagnostics": [
          "multiple base_structural_unit markers in use_numbered_elements ([1, 2, 3, 4, 7]); dominant_target_unit_marker_number left empty (W19B-1 lock — no lexical disambiguation)"
        ]
      },
      "L127B01": {
        "bg_id": "L127B01",
        "fp_id": "fp_l127_shelter_room",
        "use_numbered_elements": [
          1,
          2,
          4,
          5,
          6,
          7,
          8,
          9,
          10,
          15
        ],
        "ignore_numbered_elements": [],
        "base_markers_to_reference": [
          {
            "number": 1,
            "label": "Accommodation area",
            "category": "area",
            "position_hint": "main northern and central portion of the suite, west of the corridor",
            "base_layer_decision": "base_structural_unit",
            "render_role": "not_applicable",
            "top_down_legibility": "not_applicable"
          },
          {
            "number": 2,
            "label": "Changing recess",
            "category": "area",
            "position_hint": "south-center of the suite, open to the accommodation area",
            "base_layer_decision": "base_structural_unit",
            "render_role": "not_applicable",
            "top_down_legibility": "not_applicable"
          },
          {
            "number": 4,
            "label": "Connecting corridor",
            "category": "area",
            "position_hint": "east side of the suite, running north-south",
            "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 sleeping area, head against north wall",
            "base_layer_decision": "base_persistent_furniture",
            "render_role": "not_applicable",
            "top_down_legibility": "not_applicable"
          },
          {
            "number": 6,
            "label": "Exterior window",
            "category": "opening",
            "position_hint": "north wall, east of the bed, facing the coast",
            "base_layer_decision": "base_opening",
            "render_role": "not_applicable",
            "top_down_legibility": "not_applicable"
          },
          {
            "number": 7,
            "label": "Video-call monitor",
            "category": "prop",
            "position_hint": "northern half of east room wall, screen facing west",
            "base_layer_decision": "base_persistent_fixture",
            "render_role": "not_applicable",
            "top_down_legibility": "not_applicable"
          },
          {
            "number": 8,
            "label": "Video-enable button",
            "category": "prop",
            "position_hint": "east room wall immediately beside and below the monitor",
            "base_layer_decision": "base_persistent_fixture",
            "render_role": "not_applicable",
            "top_down_legibility": "not_applicable"
          },
          {
            "number": 9,
            "label": "Docked telephone",
            "category": "prop",
            "position_hint": "east wall call station below the monitor, adjacent to the enable button",
            "base_layer_decision": "base_persistent_fixture",
            "render_role": "not_applicable",
            "top_down_legibility": "not_applicable"
          },
          {
            "number": 10,
            "label": "Ceiling fluorescent fixture",
            "category": "prop",
            "position_hint": "ceiling projection over the central aisle east of the bed",
            "base_layer_decision": "base_persistent_fixture",
            "render_role": "not_applicable",
            "top_down_legibility": "not_applicable"
          },
          {
            "number": 15,
            "label": "Room entrance",
            "category": "opening",
            "position_hint": "east room wall south of call station, connecting to corridor",
            "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,
          4
        ],
        "dominant_target_unit_marker_number": null,
        "clean_background_expected": true,
        "diagnostics": [
          "multiple base_structural_unit markers in use_numbered_elements ([1, 2, 4]); dominant_target_unit_marker_number left empty (W19B-1 lock — no lexical disambiguation)"
        ]
      },
      "L129B01": {
        "bg_id": "L129B01",
        "fp_id": "fp_l129_research_commons",
        "use_numbered_elements": [
          4,
          5,
          6,
          7,
          8,
          9,
          10,
          11,
          12,
          13,
          14,
          15,
          16,
          17,
          18,
          19,
          20,
          21,
          22,
          23
        ],
        "ignore_numbered_elements": [],
        "base_markers_to_reference": [
          {
            "number": 4,
            "label": "Shared research hall",
            "category": "area",
            "position_hint": "western main portion of the plan",
            "base_layer_decision": "base_structural_unit",
            "render_role": "not_applicable",
            "top_down_legibility": "not_applicable"
          },
          {
            "number": 5,
            "label": "Northern planted bed",
            "category": "prop",
            "position_hint": "northwestern perimeter of the shared hall",
            "base_layer_decision": "base_persistent_fixture",
            "render_role": "not_applicable",
            "top_down_legibility": "not_applicable"
          },
          {
            "number": 6,
            "label": "Southern planted bed",
            "category": "prop",
            "position_hint": "southwestern hall perimeter, clear of the entry",
            "base_layer_decision": "base_persistent_fixture",
            "render_role": "not_applicable",
            "top_down_legibility": "not_applicable"
          },
          {
            "number": 7,
            "label": "Planted island",
            "category": "prop",
            "position_hint": "beside the central hall route, west of the laboratory approach",
            "base_layer_decision": "base_persistent_fixture",
            "render_role": "not_applicable",
            "top_down_legibility": "not_applicable"
          },
          {
            "number": 8,
            "label": "Northern research apparatus",
            "category": "prop",
            "position_hint": "north-central edge of the shared hall",
            "base_layer_decision": "base_persistent_fixture",
            "render_role": "not_applicable",
            "top_down_legibility": "not_applicable"
          },
          {
            "number": 9,
            "label": "Southern research apparatus",
            "category": "prop",
            "position_hint": "south-central edge of the shared hall",
            "base_layer_decision": "base_persistent_fixture",
            "render_role": "not_applicable",
            "top_down_legibility": "not_applicable"
          },
          {
            "number": 10,
            "label": "Northern hall computer console",
            "category": "prop",
            "position_hint": "beside the northern apparatus, facing the central hall aisle",
            "base_layer_decision": "base_persistent_fixture",
            "render_role": "not_applicable",
            "top_down_legibility": "not_applicable"
          },
          {
            "number": 11,
            "label": "Southern hall computer console",
            "category": "prop",
            "position_hint": "beside the southern apparatus, facing the central hall aisle",
            "base_layer_decision": "base_persistent_fixture",
            "render_role": "not_applicable",
            "top_down_legibility": "not_applicable"
          },
          {
            "number": 12,
            "label": "Automatic laboratory door",
            "category": "opening",
            "position_hint": "center of the partition between shared hall and eastern laboratory",
            "base_layer_decision": "base_opening",
            "render_role": "not_applicable",
            "top_down_legibility": "not_applicable"
          },
          {
            "number": 13,
            "label": "Connected laboratory",
            "category": "area",
            "position_hint": "eastern portion of the plan",
            "base_layer_decision": "base_structural_unit",
            "render_role": "not_applicable",
            "top_down_legibility": "not_applicable"
          },
          {
            "number": 14,
            "label": "Northern laboratory computer bank",
            "category": "prop",
            "position_hint": "north side of the laboratory outside the circular enclosure",
            "base_layer_decision": "base_persistent_fixture",
            "render_role": "not_applicable",
            "top_down_legibility": "not_applicable"
          },
          {
            "number": 15,
            "label": "Southern laboratory computer bank",
            "category": "prop",
            "position_hint": "south side of the laboratory outside the circular enclosure",
            "base_layer_decision": "base_persistent_fixture",
            "render_role": "not_applicable",
            "top_down_legibility": "not_applicable"
          },
          {
            "number": 16,
            "label": "Circular glass examination enclosure",
            "category": "area",
            "position_hint": "center of the connected laboratory",
            "base_layer_decision": "base_structural_unit",
            "render_role": "not_applicable",
            "top_down_legibility": "not_applicable"
          },
          {
            "number": 17,
            "label": "Automatic enclosure door",
            "category": "opening",
            "position_hint": "west point of the circular glass wall, aligned with the laboratory doorway",
            "base_layer_decision": "base_opening",
            "render_role": "not_applicable",
            "top_down_legibility": "not_applicable"
          },
          {
            "number": 18,
            "label": "Enclosure door switch",
            "category": "prop",
            "position_hint": "glass-wall access jamb beside the enclosure door",
            "base_layer_decision": "base_persistent_fixture",
            "render_role": "not_applicable",
            "top_down_legibility": "not_applicable"
          },
          {
            "number": 19,
            "label": "Metal examination bed",
            "category": "furniture",
            "position_hint": "center of the circular enclosure, long axis north-south",
            "base_layer_decision": "base_persistent_furniture",
            "render_role": "not_applicable",
            "top_down_legibility": "not_applicable"
          },
          {
            "number": 20,
            "label": "Western scanning arm",
            "category": "prop",
            "position_hint": "inside the enclosure immediately west of the examination bed",
            "base_layer_decision": "base_persistent_fixture",
            "render_role": "not_applicable",
            "top_down_legibility": "not_applicable"
          },
          {
            "number": 21,
            "label": "Eastern scanning arm",
            "category": "prop",
            "position_hint": "inside the enclosure immediately east of the examination bed",
            "base_layer_decision": "base_persistent_fixture",
            "render_role": "not_applicable",
            "top_down_legibility": "not_applicable"
          },
          {
            "number": 22,
            "label": "Fixed monitoring console",
            "category": "prop",
            "position_hint": "northeast edge of the examination enclosure",
            "base_layer_decision": "base_persistent_fixture",
            "render_role": "not_applicable",
            "top_down_legibility": "not_applicable"
          }
        ],
        "transient_markers_to_describe": [
          {
            "number": 23,
            "label": "Active red scanning laser",
            "category": "prop",
            "position_hint": "localized between scanning-arm heads and the examination-bed scanning volume",
            "base_layer_decision": "state_overlay_plot_cue",
            "render_role": "not_applicable",
            "top_down_legibility": "not_applicable"
          }
        ],
        "ignored_state_overlay_markers": [],
        "target_unit_marker_numbers": [
          4,
          13,
          16
        ],
        "dominant_target_unit_marker_number": null,
        "clean_background_expected": false,
        "diagnostics": [
          "multiple base_structural_unit markers in use_numbered_elements ([4, 13, 16]); dominant_target_unit_marker_number left empty (W19B-1 lock — no lexical disambiguation)"
        ]
      },
      "L130B04": {
        "bg_id": "L130B04",
        "fp_id": "fp_l130_main_laboratory",
        "use_numbered_elements": [
          1,
          2,
          3,
          4,
          6,
          7,
          8,
          9,
          11,
          12,
          13,
          14,
          15,
          16,
          17,
          18,
          19,
          20,
          21,
          22,
          23,
          24,
          25,
          26,
          27,
          28,
          29,
          30,
          31,
          32,
          37
        ],
        "ignore_numbered_elements": [
          38,
          39,
          40
        ],
        "base_markers_to_reference": [
          {
            "number": 1,
            "label": "Laboratory workstation zone",
            "category": "area",
            "position_hint": "northern main room surrounding the circular test enclosure",
            "base_layer_decision": "base_structural_unit",
            "render_role": "not_applicable",
            "top_down_legibility": "not_applicable"
          },
          {
            "number": 2,
            "label": "Circular glass test enclosure",
            "category": "area",
            "position_hint": "center of laboratory, including its circular glass boundary",
            "base_layer_decision": "base_structural_unit",
            "render_role": "not_applicable",
            "top_down_legibility": "not_applicable"
          },
          {
            "number": 3,
            "label": "Connecting threshold",
            "category": "area",
            "position_hint": "south of laboratory, between piano hall and meal room",
            "base_layer_decision": "base_structural_unit",
            "render_role": "not_applicable",
            "top_down_legibility": "not_applicable"
          },
          {
            "number": 4,
            "label": "Piano hall",
            "category": "area",
            "position_hint": "south-west connected room",
            "base_layer_decision": "base_structural_unit",
            "render_role": "not_applicable",
            "top_down_legibility": "not_applicable"
          },
          {
            "number": 6,
            "label": "Automatic laboratory entrance",
            "category": "opening",
            "position_hint": "center of laboratory south wall, facing connecting threshold",
            "base_layer_decision": "base_opening",
            "render_role": "not_applicable",
            "top_down_legibility": "not_applicable"
          },
          {
            "number": 7,
            "label": "Automatic enclosure entrance",
            "category": "opening",
            "position_hint": "south edge of circular glass enclosure, aligned with laboratory entrance",
            "base_layer_decision": "base_opening",
            "render_role": "not_applicable",
            "top_down_legibility": "not_applicable"
          },
          {
            "number": 8,
            "label": "Enclosure door switch",
            "category": "prop",
            "position_hint": "immediately east of enclosure entrance on fixed glass-wall jamb",
            "base_layer_decision": "base_persistent_fixture",
            "render_role": "not_applicable",
            "top_down_legibility": "not_applicable"
          },
          {
            "number": 9,
            "label": "Piano hall opening",
            "category": "opening",
            "position_hint": "east wall of piano hall connecting to threshold",
            "base_layer_decision": "base_opening",
            "render_role": "not_applicable",
            "top_down_legibility": "not_applicable"
          },
          {
            "number": 11,
            "label": "Stainless test bed",
            "category": "furniture",
            "position_hint": "slightly west of enclosure center, head toward north",
            "base_layer_decision": "base_persistent_furniture",
            "render_role": "not_applicable",
            "top_down_legibility": "not_applicable"
          },
          {
            "number": 12,
            "label": "Bed restraint assembly",
            "category": "prop",
            "position_hint": "mounted along test bed sides; engagement is not specified by the base plan",
            "base_layer_decision": "base_persistent_fixture",
            "render_role": "not_applicable",
            "top_down_legibility": "not_applicable"
          },
          {
            "number": 13,
            "label": "Metal test chair",
            "category": "furniture",
            "position_hint": "east of bed inside enclosure, facing north",
            "base_layer_decision": "base_persistent_furniture",
            "render_role": "not_applicable",
            "top_down_legibility": "not_applicable"
          },
          {
            "number": 14,
            "label": "Western scanner arm",
            "category": "prop",
            "position_hint": "north-west of test bed inside enclosure",
            "base_layer_decision": "base_persistent_fixture",
            "render_role": "not_applicable",
            "top_down_legibility": "not_applicable"
          },
          {
            "number": 15,
            "label": "Eastern scanner arm",
            "category": "prop",
            "position_hint": "north-east of test bed inside enclosure",
            "base_layer_decision": "base_persistent_fixture",
            "render_role": "not_applicable",
            "top_down_legibility": "not_applicable"
          },
          {
            "number": 16,
            "label": "Cable junction and conduit",
            "category": "prop",
            "position_hint": "east interior edge of enclosure, serving bed and chair",
            "base_layer_decision": "base_persistent_fixture",
            "render_role": "not_applicable",
            "top_down_legibility": "not_applicable"
          },
          {
            "number": 17,
            "label": "North workstation one",
            "category": "furniture",
            "position_hint": "north workstation row, westernmost integrated desk-seat-monitor module",
            "base_layer_decision": "base_persistent_furniture",
            "render_role": "not_applicable",
            "top_down_legibility": "not_applicable"
          },
          {
            "number": 18,
            "label": "North workstation two",
            "category": "furniture",
            "position_hint": "north workstation row, west-center integrated module",
            "base_layer_decision": "base_persistent_furniture",
            "render_role": "not_applicable",
            "top_down_legibility": "not_applicable"
          },
          {
            "number": 19,
            "label": "North workstation three",
            "category": "furniture",
            "position_hint": "north workstation row, east-center integrated module",
            "base_layer_decision": "base_persistent_furniture",
            "render_role": "not_applicable",
            "top_down_legibility": "not_applicable"
          },
          {
            "number": 20,
            "label": "North workstation four",
            "category": "furniture",
            "position_hint": "north workstation row, easternmost integrated module",
            "base_layer_decision": "base_persistent_furniture",
            "render_role": "not_applicable",
            "top_down_legibility": "not_applicable"
          },
          {
            "number": 21,
            "label": "Upper west workstation",
            "category": "furniture",
            "position_hint": "west side of enclosure, northern integrated module",
            "base_layer_decision": "base_persistent_furniture",
            "render_role": "not_applicable",
            "top_down_legibility": "not_applicable"
          },
          {
            "number": 22,
            "label": "Lower west workstation",
            "category": "furniture",
            "position_hint": "west side of enclosure, southern integrated module",
            "base_layer_decision": "base_persistent_furniture",
            "render_role": "not_applicable",
            "top_down_legibility": "not_applicable"
          },
          {
            "number": 23,
            "label": "Upper east workstation",
            "category": "furniture",
            "position_hint": "east side of enclosure, northern integrated module",
            "base_layer_decision": "base_persistent_furniture",
            "render_role": "not_applicable",
            "top_down_legibility": "not_applicable"
          },
          {
            "number": 24,
            "label": "Lower east workstation",
            "category": "furniture",
            "position_hint": "east side of enclosure, southern integrated module with built-in drawer",
            "base_layer_decision": "base_persistent_furniture",
            "render_role": "not_applicable",
            "top_down_legibility": "not_applicable"
          },
          {
            "number": 25,
            "label": "South-west workstation",
            "category": "furniture",
            "position_hint": "south-west laboratory perimeter, clear of entrance axis",
            "base_layer_decision": "base_persistent_furniture",
            "render_role": "not_applicable",
            "top_down_legibility": "not_applicable"
          },
          {
            "number": 26,
            "label": "South-east workstation",
            "category": "furniture",
            "position_hint": "south-east laboratory perimeter, clear of entrance axis",
            "base_layer_decision": "base_persistent_furniture",
            "render_role": "not_applicable",
            "top_down_legibility": "not_applicable"
          },
          {
            "number": 27,
            "label": "Observation chair",
            "category": "furniture",
            "position_hint": "south-west of enclosure entrance, facing the test bed",
            "base_layer_decision": "base_persistent_furniture",
            "render_role": "not_applicable",
            "top_down_legibility": "not_applicable"
          },
          {
            "number": 28,
            "label": "Laboratory intercom speaker",
            "category": "prop",
            "position_hint": "inner south laboratory wall beside entrance",
            "base_layer_decision": "base_persistent_fixture",
            "render_role": "not_applicable",
            "top_down_legibility": "not_applicable"
          },
          {
            "number": 29,
            "label": "Overhead alarm beacon",
            "category": "prop",
            "position_hint": "ceiling above southern laboratory entrance aisle; projected mounting location only",
            "base_layer_decision": "base_persistent_fixture",
            "render_role": "not_applicable",
            "top_down_legibility": "not_applicable"
          },
          {
            "number": 30,
            "label": "Piano hall column",
            "category": "area",
            "position_hint": "north-east piano hall, between hall opening and piano",
            "base_layer_decision": "base_structural_unit",
            "render_role": "not_applicable",
            "top_down_legibility": "not_applicable"
          },
          {
            "number": 31,
            "label": "Acoustic piano",
            "category": "furniture",
            "position_hint": "center of piano hall, keyboard facing south",
            "base_layer_decision": "base_persistent_furniture",
            "render_role": "not_applicable",
            "top_down_legibility": "not_applicable"
          },
          {
            "number": 32,
            "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"
          },
          {
            "number": 37,
            "label": "Fixed planted bed",
            "category": "prop",
            "position_hint": "western edge of connecting threshold, outside piano hall opening",
            "base_layer_decision": "base_persistent_fixture",
            "render_role": "not_applicable",
            "top_down_legibility": "not_applicable"
          }
        ],
        "transient_markers_to_describe": [],
        "ignored_state_overlay_markers": [
          {
            "number": 38,
            "label": "Localized test malfunction smoke",
            "category": "prop",
            "position_hint": "localized at the seated test subject's chest-ring position above test chair 13; not room-wide smoke or damage",
            "base_layer_decision": "state_overlay_plot_cue",
            "render_role": "not_applicable",
            "top_down_legibility": "not_applicable"
          },
          {
            "number": 39,
            "label": "Active red intrusion alarm",
            "category": "prop",
            "position_hint": "activation of beacon 29 and temporary red reflections on enclosure and equipment",
            "base_layer_decision": "state_overlay_plot_cue",
            "render_role": "not_applicable",
            "top_down_legibility": "not_applicable"
          },
          {
            "number": 40,
            "label": "Served meal",
            "category": "prop",
            "position_hint": "on dining table 33 for the designated meal-table shot zone only",
            "base_layer_decision": "state_overlay_transient_object",
            "render_role": "not_applicable",
            "top_down_legibility": "not_applicable"
          }
        ],
        "target_unit_marker_numbers": [
          1,
          2,
          3,
          4,
          30
        ],
        "dominant_target_unit_marker_number": null,
        "clean_background_expected": true,
        "diagnostics": [
          "multiple base_structural_unit markers in use_numbered_elements ([1, 2, 3, 4, 30]); dominant_target_unit_marker_number left empty (W19B-1 lock — no lexical disambiguation)"
        ]
      },
      "L130B01": {
        "bg_id": "L130B01",
        "fp_id": "fp_l130_main_laboratory",
        "use_numbered_elements": [
          1,
          2,
          3,
          5,
          6,
          7,
          8,
          10,
          11,
          12,
          13,
          14,
          15,
          16,
          17,
          18,
          19,
          20,
          21,
          22,
          23,
          24,
          25,
          26,
          27,
          28,
          29,
          33,
          34,
          35,
          36,
          38,
          40
        ],
        "ignore_numbered_elements": [
          39
        ],
        "base_markers_to_reference": [
          {
            "number": 1,
            "label": "Laboratory workstation zone",
            "category": "area",
            "position_hint": "northern main room surrounding the circular test enclosure",
            "base_layer_decision": "base_structural_unit",
            "render_role": "not_applicable",
            "top_down_legibility": "not_applicable"
          },
          {
            "number": 2,
            "label": "Circular glass test enclosure",
            "category": "area",
            "position_hint": "center of laboratory, including its circular glass boundary",
            "base_layer_decision": "base_structural_unit",
            "render_role": "not_applicable",
            "top_down_legibility": "not_applicable"
          },
          {
            "number": 3,
            "label": "Connecting threshold",
            "category": "area",
            "position_hint": "south of laboratory, between piano hall and meal room",
            "base_layer_decision": "base_structural_unit",
            "render_role": "not_applicable",
            "top_down_legibility": "not_applicable"
          },
          {
            "number": 5,
            "label": "Meal-table room",
            "category": "area",
            "position_hint": "south-east connected room",
            "base_layer_decision": "base_structural_unit",
            "render_role": "not_applicable",
            "top_down_legibility": "not_applicable"
          },
          {
            "number": 6,
            "label": "Automatic laboratory entrance",
            "category": "opening",
            "position_hint": "center of laboratory south wall, facing connecting threshold",
            "base_layer_decision": "base_opening",
            "render_role": "not_applicable",
            "top_down_legibility": "not_applicable"
          },
          {
            "number": 7,
            "label": "Automatic enclosure entrance",
            "category": "opening",
            "position_hint": "south edge of circular glass enclosure, aligned with laboratory entrance",
            "base_layer_decision": "base_opening",
            "render_role": "not_applicable",
            "top_down_legibility": "not_applicable"
          },
          {
            "number": 8,
            "label": "Enclosure door switch",
            "category": "prop",
            "position_hint": "immediately east of enclosure entrance on fixed glass-wall jamb",
            "base_layer_decision": "base_persistent_fixture",
            "render_role": "not_applicable",
            "top_down_legibility": "not_applicable"
          },
          {
            "number": 10,
            "label": "Meal room opening",
            "category": "opening",
            "position_hint": "west wall of meal room connecting to threshold",
            "base_layer_decision": "base_opening",
            "render_role": "not_applicable",
            "top_down_legibility": "not_applicable"
          },
          {
            "number": 11,
            "label": "Stainless test bed",
            "category": "furniture",
            "position_hint": "slightly west of enclosure center, head toward north",
            "base_layer_decision": "base_persistent_furniture",
            "render_role": "not_applicable",
            "top_down_legibility": "not_applicable"
          },
          {
            "number": 12,
            "label": "Bed restraint assembly",
            "category": "prop",
            "position_hint": "mounted along test bed sides; engagement is not specified by the base plan",
            "base_layer_decision": "base_persistent_fixture",
            "render_role": "not_applicable",
            "top_down_legibility": "not_applicable"
          },
          {
            "number": 13,
            "label": "Metal test chair",
            "category": "furniture",
            "position_hint": "east of bed inside enclosure, facing north",
            "base_layer_decision": "base_persistent_furniture",
            "render_role": "not_applicable",
            "top_down_legibility": "not_applicable"
          },
          {
            "number": 14,
            "label": "Western scanner arm",
            "category": "prop",
            "position_hint": "north-west of test bed inside enclosure",
            "base_layer_decision": "base_persistent_fixture",
            "render_role": "not_applicable",
            "top_down_legibility": "not_applicable"
          },
          {
            "number": 15,
            "label": "Eastern scanner arm",
            "category": "prop",
            "position_hint": "north-east of test bed inside enclosure",
            "base_layer_decision": "base_persistent_fixture",
            "render_role": "not_applicable",
            "top_down_legibility": "not_applicable"
          },
          {
            "number": 16,
            "label": "Cable junction and conduit",
            "category": "prop",
            "position_hint": "east interior edge of enclosure, serving bed and chair",
            "base_layer_decision": "base_persistent_fixture",
            "render_role": "not_applicable",
            "top_down_legibility": "not_applicable"
          },
          {
            "number": 17,
            "label": "North workstation one",
            "category": "furniture",
            "position_hint": "north workstation row, westernmost integrated desk-seat-monitor module",
            "base_layer_decision": "base_persistent_furniture",
            "render_role": "not_applicable",
            "top_down_legibility": "not_applicable"
          },
          {
            "number": 18,
            "label": "North workstation two",
            "category": "furniture",
            "position_hint": "north workstation row, west-center integrated module",
            "base_layer_decision": "base_persistent_furniture",
            "render_role": "not_applicable",
            "top_down_legibility": "not_applicable"
          },
          {
            "number": 19,
            "label": "North workstation three",
            "category": "furniture",
            "position_hint": "north workstation row, east-center integrated module",
            "base_layer_decision": "base_persistent_furniture",
            "render_role": "not_applicable",
            "top_down_legibility": "not_applicable"
          },
          {
            "number": 20,
            "label": "North workstation four",
            "category": "furniture",
            "position_hint": "north workstation row, easternmost integrated module",
            "base_layer_decision": "base_persistent_furniture",
            "render_role": "not_applicable",
            "top_down_legibility": "not_applicable"
          },
          {
            "number": 21,
            "label": "Upper west workstation",
            "category": "furniture",
            "position_hint": "west side of enclosure, northern integrated module",
            "base_layer_decision": "base_persistent_furniture",
            "render_role": "not_applicable",
            "top_down_legibility": "not_applicable"
          },
          {
            "number": 22,
            "label": "Lower west workstation",
            "category": "furniture",
            "position_hint": "west side of enclosure, southern integrated module",
            "base_layer_decision": "base_persistent_furniture",
            "render_role": "not_applicable",
            "top_down_legibility": "not_applicable"
          },
          {
            "number": 23,
            "label": "Upper east workstation",
            "category": "furniture",
            "position_hint": "east side of enclosure, northern integrated module",
            "base_layer_decision": "base_persistent_furniture",
            "render_role": "not_applicable",
            "top_down_legibility": "not_applicable"
          },
          {
            "number": 24,
            "label": "Lower east workstation",
            "category": "furniture",
            "position_hint": "east side of enclosure, southern integrated module with built-in drawer",
            "base_layer_decision": "base_persistent_furniture",
            "render_role": "not_applicable",
            "top_down_legibility": "not_applicable"
          },
          {
            "number": 25,
            "label": "South-west workstation",
            "category": "furniture",
            "position_hint": "south-west laboratory perimeter, clear of entrance axis",
            "base_layer_decision": "base_persistent_furniture",
            "render_role": "not_applicable",
            "top_down_legibility": "not_applicable"
          },
          {
            "number": 26,
            "label": "South-east workstation",
            "category": "furniture",
            "position_hint": "south-east laboratory perimeter, clear of entrance axis",
            "base_layer_decision": "base_persistent_furniture",
            "render_role": "not_applicable",
            "top_down_legibility": "not_applicable"
          },
          {
            "number": 27,
            "label": "Observation chair",
            "category": "furniture",
            "position_hint": "south-west of enclosure entrance, facing the test bed",
            "base_layer_decision": "base_persistent_furniture",
            "render_role": "not_applicable",
            "top_down_legibility": "not_applicable"
          },
          {
            "number": 28,
            "label": "Laboratory intercom speaker",
            "category": "prop",
            "position_hint": "inner south laboratory wall beside entrance",
            "base_layer_decision": "base_persistent_fixture",
            "render_role": "not_applicable",
            "top_down_legibility": "not_applicable"
          },
          {
            "number": 29,
            "label": "Overhead alarm beacon",
            "category": "prop",
            "position_hint": "ceiling above southern laboratory entrance aisle; projected mounting location only",
            "base_layer_decision": "base_persistent_fixture",
            "render_role": "not_applicable",
            "top_down_legibility": "not_applicable"
          },
          {
            "number": 33,
            "label": "Meal table",
            "category": "furniture",
            "position_hint": "center of meal room, long axis east-west",
            "base_layer_decision": "base_persistent_furniture",
            "render_role": "not_applicable",
            "top_down_legibility": "not_applicable"
          },
          {
            "number": 34,
            "label": "North dining bench",
            "category": "furniture",
            "position_hint": "north long side of meal table",
            "base_layer_decision": "base_persistent_furniture",
            "render_role": "not_applicable",
            "top_down_legibility": "not_applicable"
          },
          {
            "number": 35,
            "label": "South dining bench",
            "category": "furniture",
            "position_hint": "south long side of meal table",
            "base_layer_decision": "base_persistent_furniture",
            "render_role": "not_applicable",
            "top_down_legibility": "not_applicable"
          },
          {
            "number": 36,
            "label": "Serving counter",
            "category": "furniture",
            "position_hint": "east wall of meal room, with clear queue space to its west",
            "base_layer_decision": "base_persistent_fixture",
            "render_role": "not_applicable",
            "top_down_legibility": "not_applicable"
          }
        ],
        "transient_markers_to_describe": [
          {
            "number": 38,
            "label": "Localized test malfunction smoke",
            "category": "prop",
            "position_hint": "localized at the seated test subject's chest-ring position above test chair 13; not room-wide smoke or damage",
            "base_layer_decision": "state_overlay_plot_cue",
            "render_role": "not_applicable",
            "top_down_legibility": "not_applicable"
          },
          {
            "number": 40,
            "label": "Served meal",
            "category": "prop",
            "position_hint": "on dining table 33 for the designated meal-table shot zone only",
            "base_layer_decision": "state_overlay_transient_object",
            "render_role": "not_applicable",
            "top_down_legibility": "not_applicable"
          }
        ],
        "ignored_state_overlay_markers": [
          {
            "number": 39,
            "label": "Active red intrusion alarm",
            "category": "prop",
            "position_hint": "activation of beacon 29 and temporary red reflections on enclosure and equipment",
            "base_layer_decision": "state_overlay_plot_cue",
            "render_role": "not_applicable",
            "top_down_legibility": "not_applicable"
          }
        ],
        "target_unit_marker_numbers": [
          1,
          2,
          3,
          5
        ],
        "dominant_target_unit_marker_number": null,
        "clean_background_expected": false,
        "diagnostics": [
          "multiple base_structural_unit markers in use_numbered_elements ([1, 2, 3, 5]); dominant_target_unit_marker_number left empty (W19B-1 lock — no lexical disambiguation)"
        ]
      },
      "L130B02": {
        "bg_id": "L130B02",
        "fp_id": "fp_l130_main_laboratory",
        "use_numbered_elements": [
          1,
          2,
          7,
          8,
          11,
          12,
          13,
          14,
          15,
          16,
          17,
          18,
          19,
          20,
          21,
          22,
          23,
          24,
          27,
          29
        ],
        "ignore_numbered_elements": [
          38,
          39,
          40
        ],
        "base_markers_to_reference": [
          {
            "number": 1,
            "label": "Laboratory workstation zone",
            "category": "area",
            "position_hint": "northern main room surrounding the circular test enclosure",
            "base_layer_decision": "base_structural_unit",
            "render_role": "not_applicable",
            "top_down_legibility": "not_applicable"
          },
          {
            "number": 2,
            "label": "Circular glass test enclosure",
            "category": "area",
            "position_hint": "center of laboratory, including its circular glass boundary",
            "base_layer_decision": "base_structural_unit",
            "render_role": "not_applicable",
            "top_down_legibility": "not_applicable"
          },
          {
            "number": 7,
            "label": "Automatic enclosure entrance",
            "category": "opening",
            "position_hint": "south edge of circular glass enclosure, aligned with laboratory entrance",
            "base_layer_decision": "base_opening",
            "render_role": "not_applicable",
            "top_down_legibility": "not_applicable"
          },
          {
            "number": 8,
            "label": "Enclosure door switch",
            "category": "prop",
            "position_hint": "immediately east of enclosure entrance on fixed glass-wall jamb",
            "base_layer_decision": "base_persistent_fixture",
            "render_role": "not_applicable",
            "top_down_legibility": "not_applicable"
          },
          {
            "number": 11,
            "label": "Stainless test bed",
            "category": "furniture",
            "position_hint": "slightly west of enclosure center, head toward north",
            "base_layer_decision": "base_persistent_furniture",
            "render_role": "not_applicable",
            "top_down_legibility": "not_applicable"
          },
          {
            "number": 12,
            "label": "Bed restraint assembly",
            "category": "prop",
            "position_hint": "mounted along test bed sides; engagement is not specified by the base plan",
            "base_layer_decision": "base_persistent_fixture",
            "render_role": "not_applicable",
            "top_down_legibility": "not_applicable"
          },
          {
            "number": 13,
            "label": "Metal test chair",
            "category": "furniture",
            "position_hint": "east of bed inside enclosure, facing north",
            "base_layer_decision": "base_persistent_furniture",
            "render_role": "not_applicable",
            "top_down_legibility": "not_applicable"
          },
          {
            "number": 14,
            "label": "Western scanner arm",
            "category": "prop",
            "position_hint": "north-west of test bed inside enclosure",
            "base_layer_decision": "base_persistent_fixture",
            "render_role": "not_applicable",
            "top_down_legibility": "not_applicable"
          },
          {
            "number": 15,
            "label": "Eastern scanner arm",
            "category": "prop",
            "position_hint": "north-east of test bed inside enclosure",
            "base_layer_decision": "base_persistent_fixture",
            "render_role": "not_applicable",
            "top_down_legibility": "not_applicable"
          },
          {
            "number": 16,
            "label": "Cable junction and conduit",
            "category": "prop",
            "position_hint": "east interior edge of enclosure, serving bed and chair",
            "base_layer_decision": "base_persistent_fixture",
            "render_role": "not_applicable",
            "top_down_legibility": "not_applicable"
          },
          {
            "number": 17,
            "label": "North workstation one",
            "category": "furniture",
            "position_hint": "north workstation row, westernmost integrated desk-seat-monitor module",
            "base_layer_decision": "base_persistent_furniture",
            "render_role": "not_applicable",
            "top_down_legibility": "not_applicable"
          },
          {
            "number": 18,
            "label": "North workstation two",
            "category": "furniture",
            "position_hint": "north workstation row, west-center integrated module",
            "base_layer_decision": "base_persistent_furniture",
            "render_role": "not_applicable",
            "top_down_legibility": "not_applicable"
          },
          {
            "number": 19,
            "label": "North workstation three",
            "category": "furniture",
            "position_hint": "north workstation row, east-center integrated module",
            "base_layer_decision": "base_persistent_furniture",
            "render_role": "not_applicable",
            "top_down_legibility": "not_applicable"
          },
          {
            "number": 20,
            "label": "North workstation four",
            "category": "furniture",
            "position_hint": "north workstation row, easternmost integrated module",
            "base_layer_decision": "base_persistent_furniture",
            "render_role": "not_applicable",
            "top_down_legibility": "not_applicable"
          },
          {
            "number": 21,
            "label": "Upper west workstation",
            "category": "furniture",
            "position_hint": "west side of enclosure, northern integrated module",
            "base_layer_decision": "base_persistent_furniture",
            "render_role": "not_applicable",
            "top_down_legibility": "not_applicable"
          },
          {
            "number": 22,
            "label": "Lower west workstation",
            "category": "furniture",
            "position_hint": "west side of enclosure, southern integrated module",
            "base_layer_decision": "base_persistent_furniture",
            "render_role": "not_applicable",
            "top_down_legibility": "not_applicable"
          },
          {
            "number": 23,
            "label": "Upper east workstation",
            "category": "furniture",
            "position_hint": "east side of enclosure, northern integrated module",
            "base_layer_decision": "base_persistent_furniture",
            "render_role": "not_applicable",
            "top_down_legibility": "not_applicable"
          },
          {
            "number": 24,
            "label": "Lower east workstation",
            "category": "furniture",
            "position_hint": "east side of enclosure, southern integrated module with built-in drawer",
            "base_layer_decision": "base_persistent_furniture",
            "render_role": "not_applicable",
            "top_down_legibility": "not_applicable"
          },
          {
            "number": 27,
            "label": "Observation chair",
            "category": "furniture",
            "position_hint": "south-west of enclosure entrance, facing the test bed",
            "base_layer_decision": "base_persistent_furniture",
            "render_role": "not_applicable",
            "top_down_legibility": "not_applicable"
          },
          {
            "number": 29,
            "label": "Overhead alarm beacon",
            "category": "prop",
            "position_hint": "ceiling above southern laboratory entrance aisle; projected mounting location only",
            "base_layer_decision": "base_persistent_fixture",
            "render_role": "not_applicable",
            "top_down_legibility": "not_applicable"
          }
        ],
        "transient_markers_to_describe": [],
        "ignored_state_overlay_markers": [
          {
            "number": 38,
            "label": "Localized test malfunction smoke",
            "category": "prop",
            "position_hint": "localized at the seated test subject's chest-ring position above test chair 13; not room-wide smoke or damage",
            "base_layer_decision": "state_overlay_plot_cue",
            "render_role": "not_applicable",
            "top_down_legibility": "not_applicable"
          },
          {
            "number": 39,
            "label": "Active red intrusion alarm",
            "category": "prop",
            "position_hint": "activation of beacon 29 and temporary red reflections on enclosure and equipment",
            "base_layer_decision": "state_overlay_plot_cue",
            "render_role": "not_applicable",
            "top_down_legibility": "not_applicable"
          },
          {
            "number": 40,
            "label": "Served meal",
            "category": "prop",
            "position_hint": "on dining table 33 for the designated meal-table shot zone 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": 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)"
        ]
      },
      "L130B03": {
        "bg_id": "L130B03",
        "fp_id": "fp_l130_main_laboratory",
        "use_numbered_elements": [
          1,
          2,
          7,
          8,
          11,
          12,
          13,
          14,
          15,
          16,
          17,
          18,
          19,
          20,
          21,
          22,
          23,
          24,
          27,
          29,
          39
        ],
        "ignore_numbered_elements": [
          38,
          40
        ],
        "base_markers_to_reference": [
          {
            "number": 1,
            "label": "Laboratory workstation zone",
            "category": "area",
            "position_hint": "northern main room surrounding the circular test enclosure",
            "base_layer_decision": "base_structural_unit",
            "render_role": "not_applicable",
            "top_down_legibility": "not_applicable"
          },
          {
            "number": 2,
            "label": "Circular glass test enclosure",
            "category": "area",
            "position_hint": "center of laboratory, including its circular glass boundary",
            "base_layer_decision": "base_structural_unit",
            "render_role": "not_applicable",
            "top_down_legibility": "not_applicable"
          },
          {
            "number": 7,
            "label": "Automatic enclosure entrance",
            "category": "opening",
            "position_hint": "south edge of circular glass enclosure, aligned with laboratory entrance",
            "base_layer_decision": "base_opening",
            "render_role": "not_applicable",
            "top_down_legibility": "not_applicable"
          },
          {
            "number": 8,
            "label": "Enclosure door switch",
            "category": "prop",
            "position_hint": "immediately east of enclosure entrance on fixed glass-wall jamb",
            "base_layer_decision": "base_persistent_fixture",
            "render_role": "not_applicable",
            "top_down_legibility": "not_applicable"
          },
          {
            "number": 11,
            "label": "Stainless test bed",
            "category": "furniture",
            "position_hint": "slightly west of enclosure center, head toward north",
            "base_layer_decision": "base_persistent_furniture",
            "render_role": "not_applicable",
            "top_down_legibility": "not_applicable"
          },
          {
            "number": 12,
            "label": "Bed restraint assembly",
            "category": "prop",
            "position_hint": "mounted along test bed sides; engagement is not specified by the base plan",
            "base_layer_decision": "base_persistent_fixture",
            "render_role": "not_applicable",
            "top_down_legibility": "not_applicable"
          },
          {
            "number": 13,
            "label": "Metal test chair",
            "category": "furniture",
            "position_hint": "east of bed inside enclosure, facing north",
            "base_layer_decision": "base_persistent_furniture",
            "render_role": "not_applicable",
            "top_down_legibility": "not_applicable"
          },
          {
            "number": 14,
            "label": "Western scanner arm",
            "category": "prop",
            "position_hint": "north-west of test bed inside enclosure",
            "base_layer_decision": "base_persistent_fixture",
            "render_role": "not_applicable",
            "top_down_legibility": "not_applicable"
          },
          {
            "number": 15,
            "label": "Eastern scanner arm",
            "category": "prop",
            "position_hint": "north-east of test bed inside enclosure",
            "base_layer_decision": "base_persistent_fixture",
            "render_role": "not_applicable",
            "top_down_legibility": "not_applicable"
          },
          {
            "number": 16,
            "label": "Cable junction and conduit",
            "category": "prop",
            "position_hint": "east interior edge of enclosure, serving bed and chair",
            "base_layer_decision": "base_persistent_fixture",
            "render_role": "not_applicable",
            "top_down_legibility": "not_applicable"
          },
          {
            "number": 17,
            "label": "North workstation one",
            "category": "furniture",
            "position_hint": "north workstation row, westernmost integrated desk-seat-monitor module",
            "base_layer_decision": "base_persistent_furniture",
            "render_role": "not_applicable",
            "top_down_legibility": "not_applicable"
          },
          {
            "number": 18,
            "label": "North workstation two",
            "category": "furniture",
            "position_hint": "north workstation row, west-center integrated module",
            "base_layer_decision": "base_persistent_furniture",
            "render_role": "not_applicable",
            "top_down_legibility": "not_applicable"
          },
          {
            "number": 19,
            "label": "North workstation three",
            "category": "furniture",
            "position_hint": "north workstation row, east-center integrated module",
            "base_layer_decision": "base_persistent_furniture",
            "render_role": "not_applicable",
            "top_down_legibility": "not_applicable"
          },
          {
            "number": 20,
            "label": "North workstation four",
            "category": "furniture",
            "position_hint": "north workstation row, easternmost integrated module",
            "base_layer_decision": "base_persistent_furniture",
            "render_role": "not_applicable",
            "top_down_legibility": "not_applicable"
          },
          {
            "number": 21,
            "label": "Upper west workstation",
            "category": "furniture",
            "position_hint": "west side of enclosure, northern integrated module",
            "base_layer_decision": "base_persistent_furniture",
            "render_role": "not_applicable",
            "top_down_legibility": "not_applicable"
          },
          {
            "number": 22,
            "label": "Lower west workstation",
            "category": "furniture",
            "position_hint": "west side of enclosure, southern integrated module",
            "base_layer_decision": "base_persistent_furniture",
            "render_role": "not_applicable",
            "top_down_legibility": "not_applicable"
          },
          {
            "number": 23,
            "label": "Upper east workstation",
            "category": "furniture",
            "position_hint": "east side of enclosure, northern integrated module",
            "base_layer_decision": "base_persistent_furniture",
            "render_role": "not_applicable",
            "top_down_legibility": "not_applicable"
          },
          {
            "number": 24,
            "label": "Lower east workstation",
            "category": "furniture",
            "position_hint": "east side of enclosure, southern integrated module with built-in drawer",
            "base_layer_decision": "base_persistent_furniture",
            "render_role": "not_applicable",
            "top_down_legibility": "not_applicable"
          },
          {
            "number": 27,
            "label": "Observation chair",
            "category": "furniture",
            "position_hint": "south-west of enclosure entrance, facing the test bed",
            "base_layer_decision": "base_persistent_furniture",
            "render_role": "not_applicable",
            "top_down_legibility": "not_applicable"
          },
          {
            "number": 29,
            "label": "Overhead alarm beacon",
            "category": "prop",
            "position_hint": "ceiling above southern laboratory entrance aisle; projected mounting location only",
            "base_layer_decision": "base_persistent_fixture",
            "render_role": "not_applicable",
            "top_down_legibility": "not_applicable"
          }
        ],
        "transient_markers_to_describe": [
          {
            "number": 39,
            "label": "Active red intrusion alarm",
            "category": "prop",
            "position_hint": "activation of beacon 29 and temporary red reflections on enclosure and equipment",
            "base_layer_decision": "state_overlay_plot_cue",
            "render_role": "not_applicable",
            "top_down_legibility": "not_applicable"
          }
        ],
        "ignored_state_overlay_markers": [
          {
            "number": 38,
            "label": "Localized test malfunction smoke",
            "category": "prop",
            "position_hint": "localized at the seated test subject's chest-ring position above test chair 13; not room-wide smoke or damage",
            "base_layer_decision": "state_overlay_plot_cue",
            "render_role": "not_applicable",
            "top_down_legibility": "not_applicable"
          },
          {
            "number": 40,
            "label": "Served meal",
            "category": "prop",
            "position_hint": "on dining table 33 for the designated meal-table shot zone 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)"
        ]
      },
      "L131B01": {
        "bg_id": "L131B01",
        "fp_id": "fp_l131_director_office",
        "use_numbered_elements": [
          1,
          2,
          3,
          4,
          5,
          6,
          7,
          8,
          9,
          10
        ],
        "ignore_numbered_elements": [],
        "base_markers_to_reference": [
          {
            "number": 1,
            "label": "Central shared hall",
            "category": "area",
            "position_hint": "west and center of the office enclosure",
            "base_layer_decision": "base_structural_unit",
            "render_role": "not_applicable",
            "top_down_legibility": "not_applicable"
          },
          {
            "number": 2,
            "label": "Director work area",
            "category": "area",
            "position_hint": "northeast portion of the open suite",
            "base_layer_decision": "base_structural_unit",
            "render_role": "not_applicable",
            "top_down_legibility": "not_applicable"
          },
          {
            "number": 3,
            "label": "Entry and approach zone",
            "category": "area",
            "position_hint": "southeast, extending north toward the desk",
            "base_layer_decision": "base_structural_unit",
            "render_role": "not_applicable",
            "top_down_legibility": "not_applicable"
          },
          {
            "number": 4,
            "label": "Office entry door",
            "category": "opening",
            "position_hint": "south wall near the east end, connecting to the main center outside the plan",
            "base_layer_decision": "base_opening",
            "render_role": "not_applicable",
            "top_down_legibility": "not_applicable"
          },
          {
            "number": 5,
            "label": "Director desk",
            "category": "furniture",
            "position_hint": "northeast work area, long edge east-west, facing the southern entrance",
            "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 the desk with clearance from the north wall",
            "base_layer_decision": "base_persistent_furniture",
            "render_role": "not_applicable",
            "top_down_legibility": "not_applicable"
          },
          {
            "number": 7,
            "label": "Desktop family photograph",
            "category": "prop",
            "position_hint": "northwest corner of the desktop, retained as a persistent desktop accessory",
            "base_layer_decision": "base_persistent_furniture",
            "render_role": "not_applicable",
            "top_down_legibility": "not_applicable"
          },
          {
            "number": 8,
            "label": "Acoustic piano",
            "category": "furniture",
            "position_hint": "center of the shared hall, west of the entry-to-desk axis, keyboard facing south",
            "base_layer_decision": "base_persistent_furniture",
            "render_role": "not_applicable",
            "top_down_legibility": "not_applicable"
          },
          {
            "number": 9,
            "label": "Piano bench",
            "category": "furniture",
            "position_hint": "immediately south of the piano keyboard",
            "base_layer_decision": "base_persistent_furniture",
            "render_role": "not_applicable",
            "top_down_legibility": "not_applicable"
          },
          {
            "number": 10,
            "label": "Northwest column",
            "category": "area",
            "position_hint": "western hall, northwest of the piano",
            "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,
          10
        ],
        "dominant_target_unit_marker_number": null,
        "clean_background_expected": true,
        "diagnostics": [
          "multiple base_structural_unit markers in use_numbered_elements ([1, 2, 3, 10]); dominant_target_unit_marker_number left empty (W19B-1 lock — no lexical disambiguation)"
        ]
      },
      "L138B01": {
        "bg_id": "L138B01",
        "fp_id": "fp_l138_beach_landing",
        "use_numbered_elements": [
          1,
          2,
          3,
          4,
          5,
          6,
          7
        ],
        "ignore_numbered_elements": [
          8,
          9,
          10
        ],
        "base_markers_to_reference": [
          {
            "number": 1,
            "label": "Offshore approach water",
            "category": "area",
            "position_hint": "left side of plan, extending beyond the waterline toward the offshore edge",
            "base_layer_decision": "base_structural_unit",
            "render_role": "not_applicable",
            "top_down_legibility": "not_applicable"
          },
          {
            "number": 2,
            "label": "Waterline threshold",
            "category": "area",
            "position_hint": "narrow broadly vertical strip between offshore water and landing beach",
            "base_layer_decision": "base_structural_unit",
            "render_role": "not_applicable",
            "top_down_legibility": "not_applicable"
          },
          {
            "number": 3,
            "label": "Open landing beach",
            "category": "area",
            "position_hint": "central broad strip immediately inland of the waterline",
            "base_layer_decision": "base_structural_unit",
            "render_role": "not_applicable",
            "top_down_legibility": "not_applicable"
          },
          {
            "number": 4,
            "label": "Upper coastal ground",
            "category": "area",
            "position_hint": "right-middle of plan, between the beach and research-facing approach",
            "base_layer_decision": "base_structural_unit",
            "render_role": "not_applicable",
            "top_down_legibility": "not_applicable"
          },
          {
            "number": 5,
            "label": "Open inland approach",
            "category": "area",
            "position_hint": "right side of plan, joining upper coastal ground to the research-side context strip",
            "base_layer_decision": "base_structural_unit",
            "render_role": "not_applicable",
            "top_down_legibility": "not_applicable"
          },
          {
            "number": 6,
            "label": "Research-side context",
            "category": "area",
            "position_hint": "cropped far-right edge, representing adjacency to the research facility rather than its building footprint",
            "base_layer_decision": "base_structural_unit",
            "render_role": "not_applicable",
            "top_down_legibility": "not_applicable"
          }
        ],
        "transient_markers_to_describe": [
          {
            "number": 7,
            "label": "Incoming armed helicopters",
            "category": "prop",
            "position_hint": "airspace above the offshore approach and waterline, approaching the research side",
            "base_layer_decision": "state_overlay_transient_object",
            "render_role": "not_applicable",
            "top_down_legibility": "not_applicable"
          }
        ],
        "ignored_state_overlay_markers": [
          {
            "number": 8,
            "label": "Vertical white energy beam",
            "category": "prop",
            "position_hint": "research-side rooftop source beyond number 6, extending vertically into the sky; not originating in the beach",
            "base_layer_decision": "state_overlay_plot_cue",
            "render_role": "not_applicable",
            "top_down_legibility": "not_applicable"
          },
          {
            "number": 9,
            "label": "Coastal battle traces",
            "category": "prop",
            "position_hint": "upper coastal ground and research-facing approach, concentrated around the exterior aftermath area",
            "base_layer_decision": "state_overlay_plot_cue",
            "render_role": "not_applicable",
            "top_down_legibility": "not_applicable"
          },
          {
            "number": 10,
            "label": "Partial robot torso remains",
            "category": "prop",
            "position_hint": "research-facing part of number 4, beside the transition to number 5; staging anchor for the exterior aftermath",
            "base_layer_decision": "state_overlay_transient_object",
            "render_role": "not_applicable",
            "top_down_legibility": "not_applicable"
          }
        ],
        "target_unit_marker_numbers": [
          1,
          2,
          3,
          4,
          5,
          6
        ],
        "dominant_target_unit_marker_number": null,
        "clean_background_expected": 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)"
        ]
      },
      "L138B02": {
        "bg_id": "L138B02",
        "fp_id": "fp_l138_beach_landing",
        "use_numbered_elements": [
          3,
          4,
          5,
          6,
          8,
          9
        ],
        "ignore_numbered_elements": [
          7,
          10
        ],
        "base_markers_to_reference": [
          {
            "number": 3,
            "label": "Open landing beach",
            "category": "area",
            "position_hint": "central broad strip immediately inland of the waterline",
            "base_layer_decision": "base_structural_unit",
            "render_role": "not_applicable",
            "top_down_legibility": "not_applicable"
          },
          {
            "number": 4,
            "label": "Upper coastal ground",
            "category": "area",
            "position_hint": "right-middle of plan, between the beach and research-facing approach",
            "base_layer_decision": "base_structural_unit",
            "render_role": "not_applicable",
            "top_down_legibility": "not_applicable"
          },
          {
            "number": 5,
            "label": "Open inland approach",
            "category": "area",
            "position_hint": "right side of plan, joining upper coastal ground to the research-side context strip",
            "base_layer_decision": "base_structural_unit",
            "render_role": "not_applicable",
            "top_down_legibility": "not_applicable"
          },
          {
            "number": 6,
            "label": "Research-side context",
            "category": "area",
            "position_hint": "cropped far-right edge, representing adjacency to the research facility rather than its building footprint",
            "base_layer_decision": "base_structural_unit",
            "render_role": "not_applicable",
            "top_down_legibility": "not_applicable"
          }
        ],
        "transient_markers_to_describe": [
          {
            "number": 8,
            "label": "Vertical white energy beam",
            "category": "prop",
            "position_hint": "research-side rooftop source beyond number 6, extending vertically into the sky; not originating in the beach",
            "base_layer_decision": "state_overlay_plot_cue",
            "render_role": "not_applicable",
            "top_down_legibility": "not_applicable"
          },
          {
            "number": 9,
            "label": "Coastal battle traces",
            "category": "prop",
            "position_hint": "upper coastal ground and research-facing approach, concentrated around the exterior aftermath area",
            "base_layer_decision": "state_overlay_plot_cue",
            "render_role": "not_applicable",
            "top_down_legibility": "not_applicable"
          }
        ],
        "ignored_state_overlay_markers": [
          {
            "number": 7,
            "label": "Incoming armed helicopters",
            "category": "prop",
            "position_hint": "airspace above the offshore approach and waterline, approaching the research side",
            "base_layer_decision": "state_overlay_transient_object",
            "render_role": "not_applicable",
            "top_down_legibility": "not_applicable"
          },
          {
            "number": 10,
            "label": "Partial robot torso remains",
            "category": "prop",
            "position_hint": "research-facing part of number 4, beside the transition to number 5; staging anchor for the exterior aftermath",
            "base_layer_decision": "state_overlay_transient_object",
            "render_role": "not_applicable",
            "top_down_legibility": "not_applicable"
          }
        ],
        "target_unit_marker_numbers": [
          3,
          4,
          5,
          6
        ],
        "dominant_target_unit_marker_number": null,
        "clean_background_expected": false,
        "diagnostics": [
          "multiple base_structural_unit markers in use_numbered_elements ([3, 4, 5, 6]); dominant_target_unit_marker_number left empty (W19B-1 lock — no lexical disambiguation)"
        ]
      },
      "L138B03": {
        "bg_id": "L138B03",
        "fp_id": "fp_l138_beach_landing",
        "use_numbered_elements": [
          4,
          5,
          6,
          9,
          10
        ],
        "ignore_numbered_elements": [
          7,
          8
        ],
        "base_markers_to_reference": [
          {
            "number": 4,
            "label": "Upper coastal ground",
            "category": "area",
            "position_hint": "right-middle of plan, between the beach and research-facing approach",
            "base_layer_decision": "base_structural_unit",
            "render_role": "not_applicable",
            "top_down_legibility": "not_applicable"
          },
          {
            "number": 5,
            "label": "Open inland approach",
            "category": "area",
            "position_hint": "right side of plan, joining upper coastal ground to the research-side context strip",
            "base_layer_decision": "base_structural_unit",
            "render_role": "not_applicable",
            "top_down_legibility": "not_applicable"
          },
          {
            "number": 6,
            "label": "Research-side context",
            "category": "area",
            "position_hint": "cropped far-right edge, representing adjacency to the research facility rather than its building footprint",
            "base_layer_decision": "base_structural_unit",
            "render_role": "not_applicable",
            "top_down_legibility": "not_applicable"
          }
        ],
        "transient_markers_to_describe": [
          {
            "number": 9,
            "label": "Coastal battle traces",
            "category": "prop",
            "position_hint": "upper coastal ground and research-facing approach, concentrated around the exterior aftermath area",
            "base_layer_decision": "state_overlay_plot_cue",
            "render_role": "not_applicable",
            "top_down_legibility": "not_applicable"
          },
          {
            "number": 10,
            "label": "Partial robot torso remains",
            "category": "prop",
            "position_hint": "research-facing part of number 4, beside the transition to number 5; staging anchor for the exterior aftermath",
            "base_layer_decision": "state_overlay_transient_object",
            "render_role": "not_applicable",
            "top_down_legibility": "not_applicable"
          }
        ],
        "ignored_state_overlay_markers": [
          {
            "number": 7,
            "label": "Incoming armed helicopters",
            "category": "prop",
            "position_hint": "airspace above the offshore approach and waterline, approaching the research side",
            "base_layer_decision": "state_overlay_transient_object",
            "render_role": "not_applicable",
            "top_down_legibility": "not_applicable"
          },
          {
            "number": 8,
            "label": "Vertical white energy beam",
            "category": "prop",
            "position_hint": "research-side rooftop source beyond number 6, extending vertically into the sky; not originating in the beach",
            "base_layer_decision": "state_overlay_plot_cue",
            "render_role": "not_applicable",
            "top_down_legibility": "not_applicable"
          }
        ],
        "target_unit_marker_numbers": [
          4,
          5,
          6
        ],
        "dominant_target_unit_marker_number": null,
        "clean_background_expected": false,
        "diagnostics": [
          "multiple base_structural_unit markers in use_numbered_elements ([4, 5, 6]); dominant_target_unit_marker_number left empty (W19B-1 lock — no lexical disambiguation)"
        ]
      },
      "L143B01": {
        "bg_id": "L143B01",
        "fp_id": "fp_l143_reassembly_laboratory",
        "use_numbered_elements": [
          1,
          3,
          5,
          7,
          8,
          9,
          10,
          11,
          12,
          14,
          15,
          16
        ],
        "ignore_numbered_elements": [
          17
        ],
        "base_markers_to_reference": [
          {
            "number": 1,
            "label": "Laboratory",
            "category": "area",
            "position_hint": "entire rectangular interior; marker near northwest perimeter",
            "base_layer_decision": "base_structural_unit",
            "render_role": "not_applicable",
            "top_down_legibility": "not_applicable"
          },
          {
            "number": 3,
            "label": "Shared viewing area",
            "category": "area",
            "position_hint": "western and central interior around dais, seating, and circulation",
            "base_layer_decision": "base_structural_unit",
            "render_role": "not_applicable",
            "top_down_legibility": "not_applicable"
          },
          {
            "number": 5,
            "label": "Projection footprint",
            "category": "area",
            "position_hint": "central open floor between the northern dais and southern seats",
            "base_layer_decision": "base_structural_unit",
            "render_role": "not_applicable",
            "top_down_legibility": "not_applicable"
          },
          {
            "number": 7,
            "label": "Large wall display",
            "category": "prop",
            "position_hint": "north wall behind the parts dais",
            "base_layer_decision": "base_persistent_fixture",
            "render_role": "not_applicable",
            "top_down_legibility": "not_applicable"
          },
          {
            "number": 8,
            "label": "Parts dais",
            "category": "furniture",
            "position_hint": "north-central shared area, long axis east-west, below the wall display",
            "base_layer_decision": "base_persistent_furniture",
            "render_role": "not_applicable",
            "top_down_legibility": "not_applicable"
          },
          {
            "number": 9,
            "label": "Left viewing chair",
            "category": "furniture",
            "position_hint": "south of projection footprint, western chair facing north",
            "base_layer_decision": "base_persistent_furniture",
            "render_role": "not_applicable",
            "top_down_legibility": "not_applicable"
          },
          {
            "number": 10,
            "label": "Right viewing chair",
            "category": "furniture",
            "position_hint": "beside number 9, eastern chair facing north",
            "base_layer_decision": "base_persistent_furniture",
            "render_role": "not_applicable",
            "top_down_legibility": "not_applicable"
          },
          {
            "number": 11,
            "label": "Control desk",
            "category": "furniture",
            "position_hint": "immediately west of the viewing chairs",
            "base_layer_decision": "base_persistent_furniture",
            "render_role": "not_applicable",
            "top_down_legibility": "not_applicable"
          },
          {
            "number": 12,
            "label": "Projection control button",
            "category": "prop",
            "position_hint": "on the control desk number 11",
            "base_layer_decision": "base_persistent_fixture",
            "render_role": "not_applicable",
            "top_down_legibility": "not_applicable"
          }
        ],
        "transient_markers_to_describe": [
          {
            "number": 14,
            "label": "Displayed disassembled robot parts",
            "category": "prop",
            "position_hint": "arranged on top of parts dais number 8",
            "base_layer_decision": "state_overlay_transient_object",
            "render_role": "not_applicable",
            "top_down_legibility": "not_applicable"
          },
          {
            "number": 15,
            "label": "Display program",
            "category": "prop",
            "position_hint": "confined to the screen surface of number 7; worldwide energy-unit imagery changes to a local island view during projection",
            "base_layer_decision": "state_overlay_plot_cue",
            "render_role": "not_applicable",
            "top_down_legibility": "not_applicable"
          },
          {
            "number": 16,
            "label": "Active holographic playback",
            "category": "prop",
            "position_hint": "within projection footprint number 5, remaining an optical effect inside the physical laboratory",
            "base_layer_decision": "state_overlay_plot_cue",
            "render_role": "not_applicable",
            "top_down_legibility": "not_applicable"
          }
        ],
        "ignored_state_overlay_markers": [
          {
            "number": 17,
            "label": "Reassembled inactive robot body",
            "category": "prop",
            "position_hint": "lying intact on surgical table number 13, head toward north, eyes closed",
            "base_layer_decision": "state_overlay_transient_object",
            "render_role": "not_applicable",
            "top_down_legibility": "not_applicable"
          }
        ],
        "target_unit_marker_numbers": [
          1,
          3,
          5
        ],
        "dominant_target_unit_marker_number": null,
        "clean_background_expected": false,
        "diagnostics": [
          "multiple base_structural_unit markers in use_numbered_elements ([1, 3, 5]); dominant_target_unit_marker_number left empty (W19B-1 lock — no lexical disambiguation)"
        ]
      },
      "L143B02": {
        "bg_id": "L143B02",
        "fp_id": "fp_l143_reassembly_laboratory",
        "use_numbered_elements": [
          1,
          4,
          13,
          17
        ],
        "ignore_numbered_elements": [
          14,
          15,
          16
        ],
        "base_markers_to_reference": [
          {
            "number": 1,
            "label": "Laboratory",
            "category": "area",
            "position_hint": "entire rectangular interior; marker near northwest perimeter",
            "base_layer_decision": "base_structural_unit",
            "render_role": "not_applicable",
            "top_down_legibility": "not_applicable"
          },
          {
            "number": 4,
            "label": "Reassembly area",
            "category": "area",
            "position_hint": "eastern side of the same open laboratory",
            "base_layer_decision": "base_structural_unit",
            "render_role": "not_applicable",
            "top_down_legibility": "not_applicable"
          },
          {
            "number": 13,
            "label": "Surgical table",
            "category": "furniture",
            "position_hint": "center of eastern reassembly area, long axis north-south, head end north",
            "base_layer_decision": "base_persistent_furniture",
            "render_role": "not_applicable",
            "top_down_legibility": "not_applicable"
          }
        ],
        "transient_markers_to_describe": [
          {
            "number": 17,
            "label": "Reassembled inactive robot body",
            "category": "prop",
            "position_hint": "lying intact on surgical table number 13, head toward north, eyes closed",
            "base_layer_decision": "state_overlay_transient_object",
            "render_role": "not_applicable",
            "top_down_legibility": "not_applicable"
          }
        ],
        "ignored_state_overlay_markers": [
          {
            "number": 14,
            "label": "Displayed disassembled robot parts",
            "category": "prop",
            "position_hint": "arranged on top of parts dais number 8",
            "base_layer_decision": "state_overlay_transient_object",
            "render_role": "not_applicable",
            "top_down_legibility": "not_applicable"
          },
          {
            "number": 15,
            "label": "Display program",
            "category": "prop",
            "position_hint": "confined to the screen surface of number 7; worldwide energy-unit imagery changes to a local island view during projection",
            "base_layer_decision": "state_overlay_plot_cue",
            "render_role": "not_applicable",
            "top_down_legibility": "not_applicable"
          },
          {
            "number": 16,
            "label": "Active holographic playback",
            "category": "prop",
            "position_hint": "within projection footprint number 5, remaining an optical effect inside the physical laboratory",
            "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)"
        ]
      }
    }
  },
  "step_id": "floor_plan_overlay_payload",
  "run_id": "49d7e5b1-1254-45a6-ac89-a0a128aef8f5",
  "resolved_model": "gpt",
  "updated_at": "2026-09-17T15:16:58.653722+00:00",
  "project_config_snapshot": {}
}