{
  "status": "completed",
  "applicable_count": 1,
  "completed_count": 1,
  "failed_count": 0,
  "schema_version": 1,
  "config_hash": "87859d7fae867cc1",
  "data": {
    "overlays": {
      "L04B02": {
        "bg_id": "L04B02",
        "fp_id": "fp_l04_rooftop_exterior",
        "use_numbered_elements": [
          1,
          2,
          3,
          4,
          5,
          6,
          7,
          8,
          9,
          10
        ],
        "ignore_numbered_elements": [
          11,
          12,
          13,
          14,
          15,
          16,
          17
        ],
        "base_markers_to_reference": [
          {
            "number": 1,
            "label": "open rooftop deck",
            "category": "area",
            "position_hint": "central and southern shared deck area inside the parapet",
            "base_layer_decision": "base_structural_unit",
            "render_role": "not_applicable",
            "top_down_legibility": "not_applicable"
          },
          {
            "number": 2,
            "label": "rooftop unit block",
            "category": "area",
            "position_hint": "north side of the roof, rectangular private room footprint facing the deck",
            "base_layer_decision": "base_structural_unit",
            "render_role": "not_applicable",
            "top_down_legibility": "not_applicable"
          },
          {
            "number": 3,
            "label": "door threshold landing",
            "category": "area",
            "position_hint": "small beige landing zone directly in front of the entrance door on the unit facade",
            "base_layer_decision": "base_structural_unit",
            "render_role": "not_applicable",
            "top_down_legibility": "not_applicable"
          },
          {
            "number": 4,
            "label": "low parapet perimeter",
            "category": "area",
            "position_hint": "continuous outer edge around the rooftop deck",
            "base_layer_decision": "base_structural_unit",
            "render_role": "not_applicable",
            "top_down_legibility": "not_applicable"
          },
          {
            "number": 5,
            "label": "metal entrance door",
            "category": "opening",
            "position_hint": "south-facing facade of the rooftop unit, opening onto the threshold landing",
            "base_layer_decision": "base_opening",
            "render_role": "not_applicable",
            "top_down_legibility": "not_applicable"
          },
          {
            "number": 6,
            "label": "small facade window",
            "category": "opening",
            "position_hint": "south-facing facade of the rooftop unit, beside the entrance door",
            "base_layer_decision": "base_opening",
            "render_role": "not_applicable",
            "top_down_legibility": "not_applicable"
          },
          {
            "number": 7,
            "label": "cylindrical water tank",
            "category": "prop",
            "position_hint": "northwest utility corner of the rooftop deck near the unit wall and parapet",
            "base_layer_decision": "base_persistent_fixture",
            "render_role": "not_applicable",
            "top_down_legibility": "not_applicable"
          },
          {
            "number": 8,
            "label": "raised bench platform",
            "category": "furniture",
            "position_hint": "west side of the open deck, parallel to the parapet",
            "base_layer_decision": "base_persistent_furniture",
            "render_role": "not_applicable",
            "top_down_legibility": "not_applicable"
          },
          {
            "number": 9,
            "label": "laundry line posts and lines",
            "category": "prop",
            "position_hint": "spanning across the open deck between parapet-side posts",
            "base_layer_decision": "base_persistent_fixture",
            "render_role": "not_applicable",
            "top_down_legibility": "not_applicable"
          },
          {
            "number": 10,
            "label": "exterior stair opening",
            "category": "opening",
            "position_hint": "southeast edge of the rooftop deck, connected to the door approach path",
            "base_layer_decision": "base_opening",
            "render_role": "not_applicable",
            "top_down_legibility": "not_applicable"
          }
        ],
        "transient_markers_to_describe": [],
        "ignored_state_overlay_markers": [
          {
            "number": 11,
            "label": "dried herb leaves on bench and floor",
            "category": "prop",
            "position_hint": "around the raised bench platform and drifting onto the deck path toward the entrance door",
            "base_layer_decision": "state_overlay_transient_object",
            "render_role": "not_applicable",
            "top_down_legibility": "not_applicable"
          },
          {
            "number": 12,
            "label": "unseen intruder at door",
            "category": "prop",
            "position_hint": "stopped at the metal entrance door on the threshold landing",
            "base_layer_decision": "state_overlay_transient_object",
            "render_role": "not_applicable",
            "top_down_legibility": "not_applicable"
          },
          {
            "number": 13,
            "label": "flyer wedged into door gap",
            "category": "prop",
            "position_hint": "in the gap of the metal entrance door at the threshold",
            "base_layer_decision": "state_overlay_transient_object",
            "render_role": "not_applicable",
            "top_down_legibility": "not_applicable"
          },
          {
            "number": 14,
            "label": "long intruder shadow across deck",
            "category": "prop",
            "position_hint": "stretching from the threshold landing across the open rooftop deck",
            "base_layer_decision": "state_overlay_plot_cue",
            "render_role": "not_applicable",
            "top_down_legibility": "not_applicable"
          },
          {
            "number": 15,
            "label": "attack silhouette in window",
            "category": "prop",
            "position_hint": "visible only within the small facade window surface",
            "base_layer_decision": "state_overlay_plot_cue",
            "render_role": "not_applicable",
            "top_down_legibility": "not_applicable"
          },
          {
            "number": 16,
            "label": "black cat on parapet",
            "category": "prop",
            "position_hint": "on the low parapet edge, oriented toward the lit small facade window",
            "base_layer_decision": "state_overlay_transient_object",
            "render_role": "not_applicable",
            "top_down_legibility": "not_applicable"
          },
          {
            "number": 17,
            "label": "lit interior window glow",
            "category": "prop",
            "position_hint": "inside the small facade window surface of the rooftop unit",
            "base_layer_decision": "state_overlay_plot_cue",
            "render_role": "not_applicable",
            "top_down_legibility": "not_applicable"
          }
        ],
        "target_unit_marker_numbers": [
          1,
          2,
          3,
          4
        ],
        "dominant_target_unit_marker_number": null,
        "clean_background_expected": true,
        "diagnostics": [
          "multiple base_structural_unit markers in use_numbered_elements ([1, 2, 3, 4]); dominant_target_unit_marker_number left empty (W19B-1 lock — no lexical disambiguation)"
        ]
      },
      "L04B03": {
        "bg_id": "L04B03",
        "fp_id": "fp_l04_rooftop_exterior",
        "use_numbered_elements": [
          1,
          2,
          3,
          4,
          5,
          6,
          7,
          8,
          9,
          10,
          11,
          12,
          13,
          14,
          15,
          17
        ],
        "ignore_numbered_elements": [
          16
        ],
        "base_markers_to_reference": [
          {
            "number": 1,
            "label": "open rooftop deck",
            "category": "area",
            "position_hint": "central and southern shared deck area inside the parapet",
            "base_layer_decision": "base_structural_unit",
            "render_role": "not_applicable",
            "top_down_legibility": "not_applicable"
          },
          {
            "number": 2,
            "label": "rooftop unit block",
            "category": "area",
            "position_hint": "north side of the roof, rectangular private room footprint facing the deck",
            "base_layer_decision": "base_structural_unit",
            "render_role": "not_applicable",
            "top_down_legibility": "not_applicable"
          },
          {
            "number": 3,
            "label": "door threshold landing",
            "category": "area",
            "position_hint": "small beige landing zone directly in front of the entrance door on the unit facade",
            "base_layer_decision": "base_structural_unit",
            "render_role": "not_applicable",
            "top_down_legibility": "not_applicable"
          },
          {
            "number": 4,
            "label": "low parapet perimeter",
            "category": "area",
            "position_hint": "continuous outer edge around the rooftop deck",
            "base_layer_decision": "base_structural_unit",
            "render_role": "not_applicable",
            "top_down_legibility": "not_applicable"
          },
          {
            "number": 5,
            "label": "metal entrance door",
            "category": "opening",
            "position_hint": "south-facing facade of the rooftop unit, opening onto the threshold landing",
            "base_layer_decision": "base_opening",
            "render_role": "not_applicable",
            "top_down_legibility": "not_applicable"
          },
          {
            "number": 6,
            "label": "small facade window",
            "category": "opening",
            "position_hint": "south-facing facade of the rooftop unit, beside the entrance door",
            "base_layer_decision": "base_opening",
            "render_role": "not_applicable",
            "top_down_legibility": "not_applicable"
          },
          {
            "number": 7,
            "label": "cylindrical water tank",
            "category": "prop",
            "position_hint": "northwest utility corner of the rooftop deck near the unit wall and parapet",
            "base_layer_decision": "base_persistent_fixture",
            "render_role": "not_applicable",
            "top_down_legibility": "not_applicable"
          },
          {
            "number": 8,
            "label": "raised bench platform",
            "category": "furniture",
            "position_hint": "west side of the open deck, parallel to the parapet",
            "base_layer_decision": "base_persistent_furniture",
            "render_role": "not_applicable",
            "top_down_legibility": "not_applicable"
          },
          {
            "number": 9,
            "label": "laundry line posts and lines",
            "category": "prop",
            "position_hint": "spanning across the open deck between parapet-side posts",
            "base_layer_decision": "base_persistent_fixture",
            "render_role": "not_applicable",
            "top_down_legibility": "not_applicable"
          },
          {
            "number": 10,
            "label": "exterior stair opening",
            "category": "opening",
            "position_hint": "southeast edge of the rooftop deck, connected to the door approach path",
            "base_layer_decision": "base_opening",
            "render_role": "not_applicable",
            "top_down_legibility": "not_applicable"
          }
        ],
        "transient_markers_to_describe": [
          {
            "number": 11,
            "label": "dried herb leaves on bench and floor",
            "category": "prop",
            "position_hint": "around the raised bench platform and drifting onto the deck path toward the entrance door",
            "base_layer_decision": "state_overlay_transient_object",
            "render_role": "not_applicable",
            "top_down_legibility": "not_applicable"
          },
          {
            "number": 12,
            "label": "unseen intruder at door",
            "category": "prop",
            "position_hint": "stopped at the metal entrance door on the threshold landing",
            "base_layer_decision": "state_overlay_transient_object",
            "render_role": "not_applicable",
            "top_down_legibility": "not_applicable"
          },
          {
            "number": 13,
            "label": "flyer wedged into door gap",
            "category": "prop",
            "position_hint": "in the gap of the metal entrance door at the threshold",
            "base_layer_decision": "state_overlay_transient_object",
            "render_role": "not_applicable",
            "top_down_legibility": "not_applicable"
          },
          {
            "number": 14,
            "label": "long intruder shadow across deck",
            "category": "prop",
            "position_hint": "stretching from the threshold landing across the open rooftop deck",
            "base_layer_decision": "state_overlay_plot_cue",
            "render_role": "not_applicable",
            "top_down_legibility": "not_applicable"
          },
          {
            "number": 15,
            "label": "attack silhouette in window",
            "category": "prop",
            "position_hint": "visible only within the small facade window surface",
            "base_layer_decision": "state_overlay_plot_cue",
            "render_role": "not_applicable",
            "top_down_legibility": "not_applicable"
          },
          {
            "number": 17,
            "label": "lit interior window glow",
            "category": "prop",
            "position_hint": "inside the small facade window surface of the rooftop unit",
            "base_layer_decision": "state_overlay_plot_cue",
            "render_role": "not_applicable",
            "top_down_legibility": "not_applicable"
          }
        ],
        "ignored_state_overlay_markers": [
          {
            "number": 16,
            "label": "black cat on parapet",
            "category": "prop",
            "position_hint": "on the low parapet edge, oriented toward the lit small facade window",
            "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)"
        ]
      },
      "L04B01": {
        "bg_id": "L04B01",
        "fp_id": "fp_l04_rooftop_exterior",
        "use_numbered_elements": [
          1,
          2,
          3,
          4,
          5,
          6,
          7,
          8,
          9,
          10,
          16,
          17
        ],
        "ignore_numbered_elements": [
          11,
          12,
          13,
          14,
          15
        ],
        "base_markers_to_reference": [
          {
            "number": 1,
            "label": "open rooftop deck",
            "category": "area",
            "position_hint": "central and southern shared deck area inside the parapet",
            "base_layer_decision": "base_structural_unit",
            "render_role": "not_applicable",
            "top_down_legibility": "not_applicable"
          },
          {
            "number": 2,
            "label": "rooftop unit block",
            "category": "area",
            "position_hint": "north side of the roof, rectangular private room footprint facing the deck",
            "base_layer_decision": "base_structural_unit",
            "render_role": "not_applicable",
            "top_down_legibility": "not_applicable"
          },
          {
            "number": 3,
            "label": "door threshold landing",
            "category": "area",
            "position_hint": "small beige landing zone directly in front of the entrance door on the unit facade",
            "base_layer_decision": "base_structural_unit",
            "render_role": "not_applicable",
            "top_down_legibility": "not_applicable"
          },
          {
            "number": 4,
            "label": "low parapet perimeter",
            "category": "area",
            "position_hint": "continuous outer edge around the rooftop deck",
            "base_layer_decision": "base_structural_unit",
            "render_role": "not_applicable",
            "top_down_legibility": "not_applicable"
          },
          {
            "number": 5,
            "label": "metal entrance door",
            "category": "opening",
            "position_hint": "south-facing facade of the rooftop unit, opening onto the threshold landing",
            "base_layer_decision": "base_opening",
            "render_role": "not_applicable",
            "top_down_legibility": "not_applicable"
          },
          {
            "number": 6,
            "label": "small facade window",
            "category": "opening",
            "position_hint": "south-facing facade of the rooftop unit, beside the entrance door",
            "base_layer_decision": "base_opening",
            "render_role": "not_applicable",
            "top_down_legibility": "not_applicable"
          },
          {
            "number": 7,
            "label": "cylindrical water tank",
            "category": "prop",
            "position_hint": "northwest utility corner of the rooftop deck near the unit wall and parapet",
            "base_layer_decision": "base_persistent_fixture",
            "render_role": "not_applicable",
            "top_down_legibility": "not_applicable"
          },
          {
            "number": 8,
            "label": "raised bench platform",
            "category": "furniture",
            "position_hint": "west side of the open deck, parallel to the parapet",
            "base_layer_decision": "base_persistent_furniture",
            "render_role": "not_applicable",
            "top_down_legibility": "not_applicable"
          },
          {
            "number": 9,
            "label": "laundry line posts and lines",
            "category": "prop",
            "position_hint": "spanning across the open deck between parapet-side posts",
            "base_layer_decision": "base_persistent_fixture",
            "render_role": "not_applicable",
            "top_down_legibility": "not_applicable"
          },
          {
            "number": 10,
            "label": "exterior stair opening",
            "category": "opening",
            "position_hint": "southeast edge of the rooftop deck, connected to the door approach path",
            "base_layer_decision": "base_opening",
            "render_role": "not_applicable",
            "top_down_legibility": "not_applicable"
          }
        ],
        "transient_markers_to_describe": [
          {
            "number": 16,
            "label": "black cat on parapet",
            "category": "prop",
            "position_hint": "on the low parapet edge, oriented toward the lit small facade window",
            "base_layer_decision": "state_overlay_transient_object",
            "render_role": "not_applicable",
            "top_down_legibility": "not_applicable"
          },
          {
            "number": 17,
            "label": "lit interior window glow",
            "category": "prop",
            "position_hint": "inside the small facade window surface of the rooftop unit",
            "base_layer_decision": "state_overlay_plot_cue",
            "render_role": "not_applicable",
            "top_down_legibility": "not_applicable"
          }
        ],
        "ignored_state_overlay_markers": [
          {
            "number": 11,
            "label": "dried herb leaves on bench and floor",
            "category": "prop",
            "position_hint": "around the raised bench platform and drifting onto the deck path toward the entrance door",
            "base_layer_decision": "state_overlay_transient_object",
            "render_role": "not_applicable",
            "top_down_legibility": "not_applicable"
          },
          {
            "number": 12,
            "label": "unseen intruder at door",
            "category": "prop",
            "position_hint": "stopped at the metal entrance door on the threshold landing",
            "base_layer_decision": "state_overlay_transient_object",
            "render_role": "not_applicable",
            "top_down_legibility": "not_applicable"
          },
          {
            "number": 13,
            "label": "flyer wedged into door gap",
            "category": "prop",
            "position_hint": "in the gap of the metal entrance door at the threshold",
            "base_layer_decision": "state_overlay_transient_object",
            "render_role": "not_applicable",
            "top_down_legibility": "not_applicable"
          },
          {
            "number": 14,
            "label": "long intruder shadow across deck",
            "category": "prop",
            "position_hint": "stretching from the threshold landing across the open rooftop deck",
            "base_layer_decision": "state_overlay_plot_cue",
            "render_role": "not_applicable",
            "top_down_legibility": "not_applicable"
          },
          {
            "number": 15,
            "label": "attack silhouette in window",
            "category": "prop",
            "position_hint": "visible only within the small facade window surface",
            "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)"
        ]
      },
      "L05B03": {
        "bg_id": "L05B03",
        "fp_id": "fp_l05_rooftop_unit_interior",
        "use_numbered_elements": [
          1,
          2,
          3,
          4,
          5,
          6,
          8,
          9,
          10,
          11,
          12,
          15,
          16,
          17,
          18,
          19,
          20,
          30,
          31,
          32,
          33
        ],
        "ignore_numbered_elements": [
          34,
          35,
          36,
          37,
          38,
          39,
          40,
          41,
          42,
          43,
          44,
          45,
          46
        ],
        "base_markers_to_reference": [
          {
            "number": 1,
            "label": "entry threshold area",
            "category": "area",
            "position_hint": "southwest interior corner directly inside the exterior metal door",
            "base_layer_decision": "base_structural_unit",
            "render_role": "not_applicable",
            "top_down_legibility": "not_applicable"
          },
          {
            "number": 2,
            "label": "shared living dining area",
            "category": "area",
            "position_hint": "central main room occupying the largest open area",
            "base_layer_decision": "base_structural_unit",
            "render_role": "not_applicable",
            "top_down_legibility": "not_applicable"
          },
          {
            "number": 3,
            "label": "kitchen service strip",
            "category": "area",
            "position_hint": "west or northwest wall of the shared room as a narrow counter zone",
            "base_layer_decision": "base_structural_unit",
            "render_role": "not_applicable",
            "top_down_legibility": "not_applicable"
          },
          {
            "number": 4,
            "label": "mother bedroom area",
            "category": "area",
            "position_hint": "northwest private room off the shared area",
            "base_layer_decision": "base_structural_unit",
            "render_role": "not_applicable",
            "top_down_legibility": "not_applicable"
          },
          {
            "number": 5,
            "label": "daughter bedroom area",
            "category": "area",
            "position_hint": "northeast private room off the shared area",
            "base_layer_decision": "base_structural_unit",
            "render_role": "not_applicable",
            "top_down_legibility": "not_applicable"
          },
          {
            "number": 6,
            "label": "bathroom wet room area",
            "category": "area",
            "position_hint": "south or southeast side near the entry threshold",
            "base_layer_decision": "base_structural_unit",
            "render_role": "not_applicable",
            "top_down_legibility": "not_applicable"
          },
          {
            "number": 8,
            "label": "exterior metal entry door",
            "category": "opening",
            "position_hint": "southwest wall between rooftop landing and entry threshold, inward swing shown",
            "base_layer_decision": "base_opening",
            "render_role": "not_applicable",
            "top_down_legibility": "not_applicable"
          },
          {
            "number": 9,
            "label": "daughter bedroom hinged door",
            "category": "opening",
            "position_hint": "east side of shared area opening into daughter bedroom",
            "base_layer_decision": "base_opening",
            "render_role": "not_applicable",
            "top_down_legibility": "not_applicable"
          },
          {
            "number": 10,
            "label": "mother bedroom hinged door",
            "category": "opening",
            "position_hint": "north or northwest side of shared area opening into mother bedroom",
            "base_layer_decision": "base_opening",
            "render_role": "not_applicable",
            "top_down_legibility": "not_applicable"
          },
          {
            "number": 11,
            "label": "bathroom hinged door",
            "category": "opening",
            "position_hint": "south side of shared area near entry threshold",
            "base_layer_decision": "base_opening",
            "render_role": "not_applicable",
            "top_down_legibility": "not_applicable"
          },
          {
            "number": 12,
            "label": "small living room window",
            "category": "opening",
            "position_hint": "outer wall of shared living area, drawn as a short double-line window",
            "base_layer_decision": "base_opening",
            "render_role": "not_applicable",
            "top_down_legibility": "not_applicable"
          },
          {
            "number": 15,
            "label": "kitchen sink and faucet",
            "category": "prop",
            "position_hint": "within kitchen service strip along the west or northwest counter",
            "base_layer_decision": "base_persistent_fixture",
            "render_role": "not_applicable",
            "top_down_legibility": "not_applicable"
          },
          {
            "number": 16,
            "label": "stovetop and counter",
            "category": "prop",
            "position_hint": "adjacent to kitchen sink within the kitchen service strip",
            "base_layer_decision": "base_persistent_fixture",
            "render_role": "not_applicable",
            "top_down_legibility": "not_applicable"
          },
          {
            "number": 17,
            "label": "dining table",
            "category": "furniture",
            "position_hint": "center-south portion of shared living dining area",
            "base_layer_decision": "base_persistent_furniture",
            "render_role": "not_applicable",
            "top_down_legibility": "not_applicable"
          },
          {
            "number": 18,
            "label": "dining chair set",
            "category": "furniture",
            "position_hint": "around dining table in the shared living dining area",
            "base_layer_decision": "base_persistent_furniture",
            "render_role": "not_applicable",
            "top_down_legibility": "not_applicable"
          },
          {
            "number": 19,
            "label": "TV on low stand",
            "category": "furniture",
            "position_hint": "opposite dining table along an interior wall of the shared area",
            "base_layer_decision": "base_persistent_furniture",
            "render_role": "not_applicable",
            "top_down_legibility": "not_applicable"
          },
          {
            "number": 20,
            "label": "living floor lamp",
            "category": "furniture",
            "position_hint": "corner of shared living area near TV or sofa-less sitting zone",
            "base_layer_decision": "base_persistent_furniture",
            "render_role": "not_applicable",
            "top_down_legibility": "not_applicable"
          },
          {
            "number": 30,
            "label": "low shoe cabinet strip",
            "category": "furniture",
            "position_hint": "inside entry threshold beside exterior metal door",
            "base_layer_decision": "base_persistent_fixture",
            "render_role": "not_applicable",
            "top_down_legibility": "not_applicable"
          }
        ],
        "transient_markers_to_describe": [
          {
            "number": 31,
            "label": "TV news broadcast on screen",
            "category": "prop",
            "position_hint": "on TV screen at number 19 in shared living area",
            "base_layer_decision": "state_overlay_plot_cue",
            "render_role": "not_applicable",
            "top_down_legibility": "not_applicable"
          },
          {
            "number": 32,
            "label": "steaming pot and herbs",
            "category": "prop",
            "position_hint": "at kitchen sink and stovetop area, numbers 15 and 16",
            "base_layer_decision": "state_overlay_transient_object",
            "render_role": "not_applicable",
            "top_down_legibility": "not_applicable"
          },
          {
            "number": 33,
            "label": "circular wrist mark on resident",
            "category": "prop",
            "position_hint": "on a person near dining table and kitchen in the daytime domestic state",
            "base_layer_decision": "state_overlay_plot_cue",
            "render_role": "not_applicable",
            "top_down_legibility": "not_applicable"
          }
        ],
        "ignored_state_overlay_markers": [
          {
            "number": 34,
            "label": "two tea cups, one overturned",
            "category": "prop",
            "position_hint": "on dining table at number 17 during night discovery state",
            "base_layer_decision": "state_overlay_transient_object",
            "render_role": "not_applicable",
            "top_down_legibility": "not_applicable"
          },
          {
            "number": 35,
            "label": "blood stains and footprint trail",
            "category": "prop",
            "position_hint": "from daughter bedroom floor toward curtain at number 22",
            "base_layer_decision": "state_overlay_plot_cue",
            "render_role": "not_applicable",
            "top_down_legibility": "not_applicable"
          },
          {
            "number": 36,
            "label": "body behind curtain",
            "category": "prop",
            "position_hint": "seated on floor behind daughter curtain at number 22",
            "base_layer_decision": "state_overlay_transient_object",
            "render_role": "not_applicable",
            "top_down_legibility": "not_applicable"
          },
          {
            "number": 37,
            "label": "crumpled photo in hand",
            "category": "prop",
            "position_hint": "with the body near number 36 during discovery state",
            "base_layer_decision": "state_overlay_transient_object",
            "render_role": "not_applicable",
            "top_down_legibility": "not_applicable"
          },
          {
            "number": 38,
            "label": "red circle on bedroom wall",
            "category": "prop",
            "position_hint": "on bedroom wall above bed at number 29",
            "base_layer_decision": "state_overlay_plot_cue",
            "render_role": "not_applicable",
            "top_down_legibility": "not_applicable"
          },
          {
            "number": 39,
            "label": "bathroom mirror red circle apparition",
            "category": "prop",
            "position_hint": "within reflection surface of bathroom mirror at number 28",
            "base_layer_decision": "state_overlay_plot_cue",
            "render_role": "not_applicable",
            "top_down_legibility": "not_applicable"
          },
          {
            "number": 40,
            "label": "distorted tabletop family photo",
            "category": "prop",
            "position_hint": "on or near dining table at number 17 during hallucination state",
            "base_layer_decision": "state_overlay_plot_cue",
            "render_role": "not_applicable",
            "top_down_legibility": "not_applicable"
          },
          {
            "number": 41,
            "label": "ransacked belongings pulled out",
            "category": "prop",
            "position_hint": "scattered across shared area and daughter's bedroom during dusk search state",
            "base_layer_decision": "state_overlay_transient_object",
            "render_role": "not_applicable",
            "top_down_legibility": "not_applicable"
          },
          {
            "number": 42,
            "label": "footprint tracks across living area",
            "category": "prop",
            "position_hint": "crossing entry threshold and shared living dining area toward interior rooms",
            "base_layer_decision": "state_overlay_plot_cue",
            "render_role": "not_applicable",
            "top_down_legibility": "not_applicable"
          },
          {
            "number": 43,
            "label": "living window open state",
            "category": "opening",
            "position_hint": "at small living room window number 12, shown open only in ransacked state",
            "base_layer_decision": "state_overlay_plot_cue",
            "render_role": "not_applicable",
            "top_down_legibility": "not_applicable"
          },
          {
            "number": 44,
            "label": "fallen dining chairs",
            "category": "furniture",
            "position_hint": "around dining table number 17 during ransacked state",
            "base_layer_decision": "state_overlay_transient_object",
            "render_role": "not_applicable",
            "top_down_legibility": "not_applicable"
          },
          {
            "number": 45,
            "label": "blood-stained old photo pinned or held",
            "category": "prop",
            "position_hint": "center of red circle on bedroom wall number 38, later in hand as clue",
            "base_layer_decision": "state_overlay_transient_object",
            "render_role": "not_applicable",
            "top_down_legibility": "not_applicable"
          },
          {
            "number": 46,
            "label": "backpack and doll subtly shifted",
            "category": "prop",
            "position_hint": "inside daughter bedroom near storage or bed, slightly different from prior arrangement",
            "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)"
        ]
      },
      "L05B06": {
        "bg_id": "L05B06",
        "fp_id": "fp_l05_rooftop_unit_interior",
        "use_numbered_elements": [
          1,
          2,
          3,
          4,
          5,
          8,
          9,
          10,
          12,
          13,
          15,
          16,
          17,
          18,
          19,
          20,
          21,
          22,
          23,
          29,
          34,
          35,
          36,
          37,
          38
        ],
        "ignore_numbered_elements": [
          31,
          32,
          33,
          39,
          40,
          41,
          42,
          43,
          44,
          45,
          46
        ],
        "base_markers_to_reference": [
          {
            "number": 1,
            "label": "entry threshold area",
            "category": "area",
            "position_hint": "southwest interior corner directly inside the exterior metal door",
            "base_layer_decision": "base_structural_unit",
            "render_role": "not_applicable",
            "top_down_legibility": "not_applicable"
          },
          {
            "number": 2,
            "label": "shared living dining area",
            "category": "area",
            "position_hint": "central main room occupying the largest open area",
            "base_layer_decision": "base_structural_unit",
            "render_role": "not_applicable",
            "top_down_legibility": "not_applicable"
          },
          {
            "number": 3,
            "label": "kitchen service strip",
            "category": "area",
            "position_hint": "west or northwest wall of the shared room as a narrow counter zone",
            "base_layer_decision": "base_structural_unit",
            "render_role": "not_applicable",
            "top_down_legibility": "not_applicable"
          },
          {
            "number": 4,
            "label": "mother bedroom area",
            "category": "area",
            "position_hint": "northwest private room off the shared area",
            "base_layer_decision": "base_structural_unit",
            "render_role": "not_applicable",
            "top_down_legibility": "not_applicable"
          },
          {
            "number": 5,
            "label": "daughter bedroom area",
            "category": "area",
            "position_hint": "northeast private room off the shared area",
            "base_layer_decision": "base_structural_unit",
            "render_role": "not_applicable",
            "top_down_legibility": "not_applicable"
          },
          {
            "number": 8,
            "label": "exterior metal entry door",
            "category": "opening",
            "position_hint": "southwest wall between rooftop landing and entry threshold, inward swing shown",
            "base_layer_decision": "base_opening",
            "render_role": "not_applicable",
            "top_down_legibility": "not_applicable"
          },
          {
            "number": 9,
            "label": "daughter bedroom hinged door",
            "category": "opening",
            "position_hint": "east side of shared area opening into daughter bedroom",
            "base_layer_decision": "base_opening",
            "render_role": "not_applicable",
            "top_down_legibility": "not_applicable"
          },
          {
            "number": 10,
            "label": "mother bedroom hinged door",
            "category": "opening",
            "position_hint": "north or northwest side of shared area opening into mother bedroom",
            "base_layer_decision": "base_opening",
            "render_role": "not_applicable",
            "top_down_legibility": "not_applicable"
          },
          {
            "number": 12,
            "label": "small living room window",
            "category": "opening",
            "position_hint": "outer wall of shared living area, drawn as a short double-line window",
            "base_layer_decision": "base_opening",
            "render_role": "not_applicable",
            "top_down_legibility": "not_applicable"
          },
          {
            "number": 13,
            "label": "daughter room sliding window",
            "category": "opening",
            "position_hint": "outer wall of daughter bedroom behind or beside the curtain",
            "base_layer_decision": "base_opening",
            "render_role": "not_applicable",
            "top_down_legibility": "not_applicable"
          },
          {
            "number": 15,
            "label": "kitchen sink and faucet",
            "category": "prop",
            "position_hint": "within kitchen service strip along the west or northwest counter",
            "base_layer_decision": "base_persistent_fixture",
            "render_role": "not_applicable",
            "top_down_legibility": "not_applicable"
          },
          {
            "number": 16,
            "label": "stovetop and counter",
            "category": "prop",
            "position_hint": "adjacent to kitchen sink within the kitchen service strip",
            "base_layer_decision": "base_persistent_fixture",
            "render_role": "not_applicable",
            "top_down_legibility": "not_applicable"
          },
          {
            "number": 17,
            "label": "dining table",
            "category": "furniture",
            "position_hint": "center-south portion of shared living dining area",
            "base_layer_decision": "base_persistent_furniture",
            "render_role": "not_applicable",
            "top_down_legibility": "not_applicable"
          },
          {
            "number": 18,
            "label": "dining chair set",
            "category": "furniture",
            "position_hint": "around dining table in the shared living dining area",
            "base_layer_decision": "base_persistent_furniture",
            "render_role": "not_applicable",
            "top_down_legibility": "not_applicable"
          },
          {
            "number": 19,
            "label": "TV on low stand",
            "category": "furniture",
            "position_hint": "opposite dining table along an interior wall of the shared area",
            "base_layer_decision": "base_persistent_furniture",
            "render_role": "not_applicable",
            "top_down_legibility": "not_applicable"
          },
          {
            "number": 20,
            "label": "living floor lamp",
            "category": "furniture",
            "position_hint": "corner of shared living area near TV or sofa-less sitting zone",
            "base_layer_decision": "base_persistent_furniture",
            "render_role": "not_applicable",
            "top_down_legibility": "not_applicable"
          },
          {
            "number": 21,
            "label": "daughter bed",
            "category": "furniture",
            "position_hint": "against one wall of daughter bedroom, below or near the marked wall area",
            "base_layer_decision": "base_persistent_furniture",
            "render_role": "not_applicable",
            "top_down_legibility": "not_applicable"
          },
          {
            "number": 22,
            "label": "daughter curtain",
            "category": "furniture",
            "position_hint": "inside daughter bedroom at the sliding window, forming a concealed corner",
            "base_layer_decision": "base_persistent_furniture",
            "render_role": "not_applicable",
            "top_down_legibility": "not_applicable"
          },
          {
            "number": 23,
            "label": "mother bed",
            "category": "furniture",
            "position_hint": "against wall inside mother bedroom",
            "base_layer_decision": "base_persistent_furniture",
            "render_role": "not_applicable",
            "top_down_legibility": "not_applicable"
          },
          {
            "number": 29,
            "label": "bedroom wall above bed",
            "category": "area",
            "position_hint": "wall surface over or beside daughter bed, used as recurring wall anchor",
            "base_layer_decision": "base_structural_unit",
            "render_role": "not_applicable",
            "top_down_legibility": "not_applicable"
          }
        ],
        "transient_markers_to_describe": [
          {
            "number": 34,
            "label": "two tea cups, one overturned",
            "category": "prop",
            "position_hint": "on dining table at number 17 during night discovery state",
            "base_layer_decision": "state_overlay_transient_object",
            "render_role": "not_applicable",
            "top_down_legibility": "not_applicable"
          },
          {
            "number": 35,
            "label": "blood stains and footprint trail",
            "category": "prop",
            "position_hint": "from daughter bedroom floor toward curtain at number 22",
            "base_layer_decision": "state_overlay_plot_cue",
            "render_role": "not_applicable",
            "top_down_legibility": "not_applicable"
          },
          {
            "number": 36,
            "label": "body behind curtain",
            "category": "prop",
            "position_hint": "seated on floor behind daughter curtain at number 22",
            "base_layer_decision": "state_overlay_transient_object",
            "render_role": "not_applicable",
            "top_down_legibility": "not_applicable"
          },
          {
            "number": 37,
            "label": "crumpled photo in hand",
            "category": "prop",
            "position_hint": "with the body near number 36 during discovery state",
            "base_layer_decision": "state_overlay_transient_object",
            "render_role": "not_applicable",
            "top_down_legibility": "not_applicable"
          },
          {
            "number": 38,
            "label": "red circle on bedroom wall",
            "category": "prop",
            "position_hint": "on bedroom wall above bed at number 29",
            "base_layer_decision": "state_overlay_plot_cue",
            "render_role": "not_applicable",
            "top_down_legibility": "not_applicable"
          }
        ],
        "ignored_state_overlay_markers": [
          {
            "number": 31,
            "label": "TV news broadcast on screen",
            "category": "prop",
            "position_hint": "on TV screen at number 19 in shared living area",
            "base_layer_decision": "state_overlay_plot_cue",
            "render_role": "not_applicable",
            "top_down_legibility": "not_applicable"
          },
          {
            "number": 32,
            "label": "steaming pot and herbs",
            "category": "prop",
            "position_hint": "at kitchen sink and stovetop area, numbers 15 and 16",
            "base_layer_decision": "state_overlay_transient_object",
            "render_role": "not_applicable",
            "top_down_legibility": "not_applicable"
          },
          {
            "number": 33,
            "label": "circular wrist mark on resident",
            "category": "prop",
            "position_hint": "on a person near dining table and kitchen in the daytime domestic state",
            "base_layer_decision": "state_overlay_plot_cue",
            "render_role": "not_applicable",
            "top_down_legibility": "not_applicable"
          },
          {
            "number": 39,
            "label": "bathroom mirror red circle apparition",
            "category": "prop",
            "position_hint": "within reflection surface of bathroom mirror at number 28",
            "base_layer_decision": "state_overlay_plot_cue",
            "render_role": "not_applicable",
            "top_down_legibility": "not_applicable"
          },
          {
            "number": 40,
            "label": "distorted tabletop family photo",
            "category": "prop",
            "position_hint": "on or near dining table at number 17 during hallucination state",
            "base_layer_decision": "state_overlay_plot_cue",
            "render_role": "not_applicable",
            "top_down_legibility": "not_applicable"
          },
          {
            "number": 41,
            "label": "ransacked belongings pulled out",
            "category": "prop",
            "position_hint": "scattered across shared area and daughter's bedroom during dusk search state",
            "base_layer_decision": "state_overlay_transient_object",
            "render_role": "not_applicable",
            "top_down_legibility": "not_applicable"
          },
          {
            "number": 42,
            "label": "footprint tracks across living area",
            "category": "prop",
            "position_hint": "crossing entry threshold and shared living dining area toward interior rooms",
            "base_layer_decision": "state_overlay_plot_cue",
            "render_role": "not_applicable",
            "top_down_legibility": "not_applicable"
          },
          {
            "number": 43,
            "label": "living window open state",
            "category": "opening",
            "position_hint": "at small living room window number 12, shown open only in ransacked state",
            "base_layer_decision": "state_overlay_plot_cue",
            "render_role": "not_applicable",
            "top_down_legibility": "not_applicable"
          },
          {
            "number": 44,
            "label": "fallen dining chairs",
            "category": "furniture",
            "position_hint": "around dining table number 17 during ransacked state",
            "base_layer_decision": "state_overlay_transient_object",
            "render_role": "not_applicable",
            "top_down_legibility": "not_applicable"
          },
          {
            "number": 45,
            "label": "blood-stained old photo pinned or held",
            "category": "prop",
            "position_hint": "center of red circle on bedroom wall number 38, later in hand as clue",
            "base_layer_decision": "state_overlay_transient_object",
            "render_role": "not_applicable",
            "top_down_legibility": "not_applicable"
          },
          {
            "number": 46,
            "label": "backpack and doll subtly shifted",
            "category": "prop",
            "position_hint": "inside daughter bedroom near storage or bed, slightly different from prior arrangement",
            "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,
          29
        ],
        "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, 29]); dominant_target_unit_marker_number left empty (W19B-1 lock — no lexical disambiguation)"
        ]
      },
      "L05B07": {
        "bg_id": "L05B07",
        "fp_id": "fp_l05_rooftop_unit_interior",
        "use_numbered_elements": [
          1,
          2,
          3,
          4,
          5,
          6,
          7,
          8,
          9,
          10,
          11,
          12,
          13,
          14,
          15,
          16,
          17,
          18,
          19,
          20,
          21,
          22,
          23,
          24,
          25,
          26,
          27,
          28,
          29,
          30,
          46
        ],
        "ignore_numbered_elements": [
          31,
          32,
          33,
          34,
          35,
          36,
          37,
          38,
          39,
          40,
          41,
          42,
          43,
          44,
          45
        ],
        "base_markers_to_reference": [
          {
            "number": 1,
            "label": "entry threshold area",
            "category": "area",
            "position_hint": "southwest interior corner directly inside the exterior metal door",
            "base_layer_decision": "base_structural_unit",
            "render_role": "not_applicable",
            "top_down_legibility": "not_applicable"
          },
          {
            "number": 2,
            "label": "shared living dining area",
            "category": "area",
            "position_hint": "central main room occupying the largest open area",
            "base_layer_decision": "base_structural_unit",
            "render_role": "not_applicable",
            "top_down_legibility": "not_applicable"
          },
          {
            "number": 3,
            "label": "kitchen service strip",
            "category": "area",
            "position_hint": "west or northwest wall of the shared room as a narrow counter zone",
            "base_layer_decision": "base_structural_unit",
            "render_role": "not_applicable",
            "top_down_legibility": "not_applicable"
          },
          {
            "number": 4,
            "label": "mother bedroom area",
            "category": "area",
            "position_hint": "northwest private room off the shared area",
            "base_layer_decision": "base_structural_unit",
            "render_role": "not_applicable",
            "top_down_legibility": "not_applicable"
          },
          {
            "number": 5,
            "label": "daughter bedroom area",
            "category": "area",
            "position_hint": "northeast private room off the shared area",
            "base_layer_decision": "base_structural_unit",
            "render_role": "not_applicable",
            "top_down_legibility": "not_applicable"
          },
          {
            "number": 6,
            "label": "bathroom wet room area",
            "category": "area",
            "position_hint": "south or southeast side near the entry threshold",
            "base_layer_decision": "base_structural_unit",
            "render_role": "not_applicable",
            "top_down_legibility": "not_applicable"
          },
          {
            "number": 7,
            "label": "rooftop exterior landing strip",
            "category": "area",
            "position_hint": "outside the exterior door along the south edge, shown only as a narrow adjacent utility strip",
            "base_layer_decision": "base_structural_unit",
            "render_role": "not_applicable",
            "top_down_legibility": "not_applicable"
          },
          {
            "number": 8,
            "label": "exterior metal entry door",
            "category": "opening",
            "position_hint": "southwest wall between rooftop landing and entry threshold, inward swing shown",
            "base_layer_decision": "base_opening",
            "render_role": "not_applicable",
            "top_down_legibility": "not_applicable"
          },
          {
            "number": 9,
            "label": "daughter bedroom hinged door",
            "category": "opening",
            "position_hint": "east side of shared area opening into daughter bedroom",
            "base_layer_decision": "base_opening",
            "render_role": "not_applicable",
            "top_down_legibility": "not_applicable"
          },
          {
            "number": 10,
            "label": "mother bedroom hinged door",
            "category": "opening",
            "position_hint": "north or northwest side of shared area opening into mother bedroom",
            "base_layer_decision": "base_opening",
            "render_role": "not_applicable",
            "top_down_legibility": "not_applicable"
          },
          {
            "number": 11,
            "label": "bathroom hinged door",
            "category": "opening",
            "position_hint": "south side of shared area near entry threshold",
            "base_layer_decision": "base_opening",
            "render_role": "not_applicable",
            "top_down_legibility": "not_applicable"
          },
          {
            "number": 12,
            "label": "small living room window",
            "category": "opening",
            "position_hint": "outer wall of shared living area, drawn as a short double-line window",
            "base_layer_decision": "base_opening",
            "render_role": "not_applicable",
            "top_down_legibility": "not_applicable"
          },
          {
            "number": 13,
            "label": "daughter room sliding window",
            "category": "opening",
            "position_hint": "outer wall of daughter bedroom behind or beside the curtain",
            "base_layer_decision": "base_opening",
            "render_role": "not_applicable",
            "top_down_legibility": "not_applicable"
          },
          {
            "number": 14,
            "label": "mother room small window",
            "category": "opening",
            "position_hint": "outer wall of mother bedroom",
            "base_layer_decision": "base_opening",
            "render_role": "not_applicable",
            "top_down_legibility": "not_applicable"
          },
          {
            "number": 15,
            "label": "kitchen sink and faucet",
            "category": "prop",
            "position_hint": "within kitchen service strip along the west or northwest counter",
            "base_layer_decision": "base_persistent_fixture",
            "render_role": "not_applicable",
            "top_down_legibility": "not_applicable"
          },
          {
            "number": 16,
            "label": "stovetop and counter",
            "category": "prop",
            "position_hint": "adjacent to kitchen sink within the kitchen service strip",
            "base_layer_decision": "base_persistent_fixture",
            "render_role": "not_applicable",
            "top_down_legibility": "not_applicable"
          },
          {
            "number": 17,
            "label": "dining table",
            "category": "furniture",
            "position_hint": "center-south portion of shared living dining area",
            "base_layer_decision": "base_persistent_furniture",
            "render_role": "not_applicable",
            "top_down_legibility": "not_applicable"
          },
          {
            "number": 18,
            "label": "dining chair set",
            "category": "furniture",
            "position_hint": "around dining table in the shared living dining area",
            "base_layer_decision": "base_persistent_furniture",
            "render_role": "not_applicable",
            "top_down_legibility": "not_applicable"
          },
          {
            "number": 19,
            "label": "TV on low stand",
            "category": "furniture",
            "position_hint": "opposite dining table along an interior wall of the shared area",
            "base_layer_decision": "base_persistent_furniture",
            "render_role": "not_applicable",
            "top_down_legibility": "not_applicable"
          },
          {
            "number": 20,
            "label": "living floor lamp",
            "category": "furniture",
            "position_hint": "corner of shared living area near TV or sofa-less sitting zone",
            "base_layer_decision": "base_persistent_furniture",
            "render_role": "not_applicable",
            "top_down_legibility": "not_applicable"
          },
          {
            "number": 21,
            "label": "daughter bed",
            "category": "furniture",
            "position_hint": "against one wall of daughter bedroom, below or near the marked wall area",
            "base_layer_decision": "base_persistent_furniture",
            "render_role": "not_applicable",
            "top_down_legibility": "not_applicable"
          },
          {
            "number": 22,
            "label": "daughter curtain",
            "category": "furniture",
            "position_hint": "inside daughter bedroom at the sliding window, forming a concealed corner",
            "base_layer_decision": "base_persistent_furniture",
            "render_role": "not_applicable",
            "top_down_legibility": "not_applicable"
          },
          {
            "number": 23,
            "label": "mother bed",
            "category": "furniture",
            "position_hint": "against wall inside mother bedroom",
            "base_layer_decision": "base_persistent_furniture",
            "render_role": "not_applicable",
            "top_down_legibility": "not_applicable"
          },
          {
            "number": 24,
            "label": "compact wardrobe storage",
            "category": "furniture",
            "position_hint": "inside daughter bedroom or along shared-room partition wall as built-in storage",
            "base_layer_decision": "base_persistent_furniture",
            "render_role": "not_applicable",
            "top_down_legibility": "not_applicable"
          },
          {
            "number": 25,
            "label": "bathroom sink",
            "category": "prop",
            "position_hint": "inside bathroom near the door",
            "base_layer_decision": "base_persistent_fixture",
            "render_role": "not_applicable",
            "top_down_legibility": "not_applicable"
          },
          {
            "number": 26,
            "label": "toilet",
            "category": "prop",
            "position_hint": "inside bathroom on the wall opposite or beside sink",
            "base_layer_decision": "base_persistent_fixture",
            "render_role": "not_applicable",
            "top_down_legibility": "not_applicable"
          },
          {
            "number": 27,
            "label": "wet shower drain",
            "category": "prop",
            "position_hint": "rear corner of compact bathroom wet area",
            "base_layer_decision": "base_persistent_fixture",
            "render_role": "not_applicable",
            "top_down_legibility": "not_applicable"
          },
          {
            "number": 28,
            "label": "bathroom mirror",
            "category": "prop",
            "position_hint": "above bathroom sink on bathroom wall",
            "base_layer_decision": "base_persistent_fixture",
            "render_role": "not_applicable",
            "top_down_legibility": "not_applicable"
          },
          {
            "number": 29,
            "label": "bedroom wall above bed",
            "category": "area",
            "position_hint": "wall surface over or beside daughter bed, used as recurring wall anchor",
            "base_layer_decision": "base_structural_unit",
            "render_role": "not_applicable",
            "top_down_legibility": "not_applicable"
          },
          {
            "number": 30,
            "label": "low shoe cabinet strip",
            "category": "furniture",
            "position_hint": "inside entry threshold beside exterior metal door",
            "base_layer_decision": "base_persistent_fixture",
            "render_role": "not_applicable",
            "top_down_legibility": "not_applicable"
          }
        ],
        "transient_markers_to_describe": [
          {
            "number": 46,
            "label": "backpack and doll subtly shifted",
            "category": "prop",
            "position_hint": "inside daughter bedroom near storage or bed, slightly different from prior arrangement",
            "base_layer_decision": "state_overlay_transient_object",
            "render_role": "not_applicable",
            "top_down_legibility": "not_applicable"
          }
        ],
        "ignored_state_overlay_markers": [
          {
            "number": 31,
            "label": "TV news broadcast on screen",
            "category": "prop",
            "position_hint": "on TV screen at number 19 in shared living area",
            "base_layer_decision": "state_overlay_plot_cue",
            "render_role": "not_applicable",
            "top_down_legibility": "not_applicable"
          },
          {
            "number": 32,
            "label": "steaming pot and herbs",
            "category": "prop",
            "position_hint": "at kitchen sink and stovetop area, numbers 15 and 16",
            "base_layer_decision": "state_overlay_transient_object",
            "render_role": "not_applicable",
            "top_down_legibility": "not_applicable"
          },
          {
            "number": 33,
            "label": "circular wrist mark on resident",
            "category": "prop",
            "position_hint": "on a person near dining table and kitchen in the daytime domestic state",
            "base_layer_decision": "state_overlay_plot_cue",
            "render_role": "not_applicable",
            "top_down_legibility": "not_applicable"
          },
          {
            "number": 34,
            "label": "two tea cups, one overturned",
            "category": "prop",
            "position_hint": "on dining table at number 17 during night discovery state",
            "base_layer_decision": "state_overlay_transient_object",
            "render_role": "not_applicable",
            "top_down_legibility": "not_applicable"
          },
          {
            "number": 35,
            "label": "blood stains and footprint trail",
            "category": "prop",
            "position_hint": "from daughter bedroom floor toward curtain at number 22",
            "base_layer_decision": "state_overlay_plot_cue",
            "render_role": "not_applicable",
            "top_down_legibility": "not_applicable"
          },
          {
            "number": 36,
            "label": "body behind curtain",
            "category": "prop",
            "position_hint": "seated on floor behind daughter curtain at number 22",
            "base_layer_decision": "state_overlay_transient_object",
            "render_role": "not_applicable",
            "top_down_legibility": "not_applicable"
          },
          {
            "number": 37,
            "label": "crumpled photo in hand",
            "category": "prop",
            "position_hint": "with the body near number 36 during discovery state",
            "base_layer_decision": "state_overlay_transient_object",
            "render_role": "not_applicable",
            "top_down_legibility": "not_applicable"
          },
          {
            "number": 38,
            "label": "red circle on bedroom wall",
            "category": "prop",
            "position_hint": "on bedroom wall above bed at number 29",
            "base_layer_decision": "state_overlay_plot_cue",
            "render_role": "not_applicable",
            "top_down_legibility": "not_applicable"
          },
          {
            "number": 39,
            "label": "bathroom mirror red circle apparition",
            "category": "prop",
            "position_hint": "within reflection surface of bathroom mirror at number 28",
            "base_layer_decision": "state_overlay_plot_cue",
            "render_role": "not_applicable",
            "top_down_legibility": "not_applicable"
          },
          {
            "number": 40,
            "label": "distorted tabletop family photo",
            "category": "prop",
            "position_hint": "on or near dining table at number 17 during hallucination state",
            "base_layer_decision": "state_overlay_plot_cue",
            "render_role": "not_applicable",
            "top_down_legibility": "not_applicable"
          },
          {
            "number": 41,
            "label": "ransacked belongings pulled out",
            "category": "prop",
            "position_hint": "scattered across shared area and daughter's bedroom during dusk search state",
            "base_layer_decision": "state_overlay_transient_object",
            "render_role": "not_applicable",
            "top_down_legibility": "not_applicable"
          },
          {
            "number": 42,
            "label": "footprint tracks across living area",
            "category": "prop",
            "position_hint": "crossing entry threshold and shared living dining area toward interior rooms",
            "base_layer_decision": "state_overlay_plot_cue",
            "render_role": "not_applicable",
            "top_down_legibility": "not_applicable"
          },
          {
            "number": 43,
            "label": "living window open state",
            "category": "opening",
            "position_hint": "at small living room window number 12, shown open only in ransacked state",
            "base_layer_decision": "state_overlay_plot_cue",
            "render_role": "not_applicable",
            "top_down_legibility": "not_applicable"
          },
          {
            "number": 44,
            "label": "fallen dining chairs",
            "category": "furniture",
            "position_hint": "around dining table number 17 during ransacked state",
            "base_layer_decision": "state_overlay_transient_object",
            "render_role": "not_applicable",
            "top_down_legibility": "not_applicable"
          },
          {
            "number": 45,
            "label": "blood-stained old photo pinned or held",
            "category": "prop",
            "position_hint": "center of red circle on bedroom wall number 38, later in hand as clue",
            "base_layer_decision": "state_overlay_transient_object",
            "render_role": "not_applicable",
            "top_down_legibility": "not_applicable"
          }
        ],
        "target_unit_marker_numbers": [
          1,
          2,
          3,
          4,
          5,
          6,
          7,
          29
        ],
        "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, 7, 29]); dominant_target_unit_marker_number left empty (W19B-1 lock — no lexical disambiguation)"
        ]
      },
      "L05B01": {
        "bg_id": "L05B01",
        "fp_id": "fp_l05_rooftop_unit_interior",
        "use_numbered_elements": [
          1,
          2,
          3,
          4,
          5,
          6,
          7,
          8,
          9,
          10,
          11,
          12,
          13,
          14,
          15,
          16,
          17,
          18,
          19,
          20,
          21,
          22,
          23,
          24,
          25,
          26,
          27,
          28,
          29,
          30
        ],
        "ignore_numbered_elements": [
          31,
          32,
          33,
          34,
          35,
          36,
          37,
          38,
          39,
          40,
          41,
          42,
          43,
          44,
          45,
          46
        ],
        "base_markers_to_reference": [
          {
            "number": 1,
            "label": "entry threshold area",
            "category": "area",
            "position_hint": "southwest interior corner directly inside the exterior metal door",
            "base_layer_decision": "base_structural_unit",
            "render_role": "not_applicable",
            "top_down_legibility": "not_applicable"
          },
          {
            "number": 2,
            "label": "shared living dining area",
            "category": "area",
            "position_hint": "central main room occupying the largest open area",
            "base_layer_decision": "base_structural_unit",
            "render_role": "not_applicable",
            "top_down_legibility": "not_applicable"
          },
          {
            "number": 3,
            "label": "kitchen service strip",
            "category": "area",
            "position_hint": "west or northwest wall of the shared room as a narrow counter zone",
            "base_layer_decision": "base_structural_unit",
            "render_role": "not_applicable",
            "top_down_legibility": "not_applicable"
          },
          {
            "number": 4,
            "label": "mother bedroom area",
            "category": "area",
            "position_hint": "northwest private room off the shared area",
            "base_layer_decision": "base_structural_unit",
            "render_role": "not_applicable",
            "top_down_legibility": "not_applicable"
          },
          {
            "number": 5,
            "label": "daughter bedroom area",
            "category": "area",
            "position_hint": "northeast private room off the shared area",
            "base_layer_decision": "base_structural_unit",
            "render_role": "not_applicable",
            "top_down_legibility": "not_applicable"
          },
          {
            "number": 6,
            "label": "bathroom wet room area",
            "category": "area",
            "position_hint": "south or southeast side near the entry threshold",
            "base_layer_decision": "base_structural_unit",
            "render_role": "not_applicable",
            "top_down_legibility": "not_applicable"
          },
          {
            "number": 7,
            "label": "rooftop exterior landing strip",
            "category": "area",
            "position_hint": "outside the exterior door along the south edge, shown only as a narrow adjacent utility strip",
            "base_layer_decision": "base_structural_unit",
            "render_role": "not_applicable",
            "top_down_legibility": "not_applicable"
          },
          {
            "number": 8,
            "label": "exterior metal entry door",
            "category": "opening",
            "position_hint": "southwest wall between rooftop landing and entry threshold, inward swing shown",
            "base_layer_decision": "base_opening",
            "render_role": "not_applicable",
            "top_down_legibility": "not_applicable"
          },
          {
            "number": 9,
            "label": "daughter bedroom hinged door",
            "category": "opening",
            "position_hint": "east side of shared area opening into daughter bedroom",
            "base_layer_decision": "base_opening",
            "render_role": "not_applicable",
            "top_down_legibility": "not_applicable"
          },
          {
            "number": 10,
            "label": "mother bedroom hinged door",
            "category": "opening",
            "position_hint": "north or northwest side of shared area opening into mother bedroom",
            "base_layer_decision": "base_opening",
            "render_role": "not_applicable",
            "top_down_legibility": "not_applicable"
          },
          {
            "number": 11,
            "label": "bathroom hinged door",
            "category": "opening",
            "position_hint": "south side of shared area near entry threshold",
            "base_layer_decision": "base_opening",
            "render_role": "not_applicable",
            "top_down_legibility": "not_applicable"
          },
          {
            "number": 12,
            "label": "small living room window",
            "category": "opening",
            "position_hint": "outer wall of shared living area, drawn as a short double-line window",
            "base_layer_decision": "base_opening",
            "render_role": "not_applicable",
            "top_down_legibility": "not_applicable"
          },
          {
            "number": 13,
            "label": "daughter room sliding window",
            "category": "opening",
            "position_hint": "outer wall of daughter bedroom behind or beside the curtain",
            "base_layer_decision": "base_opening",
            "render_role": "not_applicable",
            "top_down_legibility": "not_applicable"
          },
          {
            "number": 14,
            "label": "mother room small window",
            "category": "opening",
            "position_hint": "outer wall of mother bedroom",
            "base_layer_decision": "base_opening",
            "render_role": "not_applicable",
            "top_down_legibility": "not_applicable"
          },
          {
            "number": 15,
            "label": "kitchen sink and faucet",
            "category": "prop",
            "position_hint": "within kitchen service strip along the west or northwest counter",
            "base_layer_decision": "base_persistent_fixture",
            "render_role": "not_applicable",
            "top_down_legibility": "not_applicable"
          },
          {
            "number": 16,
            "label": "stovetop and counter",
            "category": "prop",
            "position_hint": "adjacent to kitchen sink within the kitchen service strip",
            "base_layer_decision": "base_persistent_fixture",
            "render_role": "not_applicable",
            "top_down_legibility": "not_applicable"
          },
          {
            "number": 17,
            "label": "dining table",
            "category": "furniture",
            "position_hint": "center-south portion of shared living dining area",
            "base_layer_decision": "base_persistent_furniture",
            "render_role": "not_applicable",
            "top_down_legibility": "not_applicable"
          },
          {
            "number": 18,
            "label": "dining chair set",
            "category": "furniture",
            "position_hint": "around dining table in the shared living dining area",
            "base_layer_decision": "base_persistent_furniture",
            "render_role": "not_applicable",
            "top_down_legibility": "not_applicable"
          },
          {
            "number": 19,
            "label": "TV on low stand",
            "category": "furniture",
            "position_hint": "opposite dining table along an interior wall of the shared area",
            "base_layer_decision": "base_persistent_furniture",
            "render_role": "not_applicable",
            "top_down_legibility": "not_applicable"
          },
          {
            "number": 20,
            "label": "living floor lamp",
            "category": "furniture",
            "position_hint": "corner of shared living area near TV or sofa-less sitting zone",
            "base_layer_decision": "base_persistent_furniture",
            "render_role": "not_applicable",
            "top_down_legibility": "not_applicable"
          },
          {
            "number": 21,
            "label": "daughter bed",
            "category": "furniture",
            "position_hint": "against one wall of daughter bedroom, below or near the marked wall area",
            "base_layer_decision": "base_persistent_furniture",
            "render_role": "not_applicable",
            "top_down_legibility": "not_applicable"
          },
          {
            "number": 22,
            "label": "daughter curtain",
            "category": "furniture",
            "position_hint": "inside daughter bedroom at the sliding window, forming a concealed corner",
            "base_layer_decision": "base_persistent_furniture",
            "render_role": "not_applicable",
            "top_down_legibility": "not_applicable"
          },
          {
            "number": 23,
            "label": "mother bed",
            "category": "furniture",
            "position_hint": "against wall inside mother bedroom",
            "base_layer_decision": "base_persistent_furniture",
            "render_role": "not_applicable",
            "top_down_legibility": "not_applicable"
          },
          {
            "number": 24,
            "label": "compact wardrobe storage",
            "category": "furniture",
            "position_hint": "inside daughter bedroom or along shared-room partition wall as built-in storage",
            "base_layer_decision": "base_persistent_furniture",
            "render_role": "not_applicable",
            "top_down_legibility": "not_applicable"
          },
          {
            "number": 25,
            "label": "bathroom sink",
            "category": "prop",
            "position_hint": "inside bathroom near the door",
            "base_layer_decision": "base_persistent_fixture",
            "render_role": "not_applicable",
            "top_down_legibility": "not_applicable"
          },
          {
            "number": 26,
            "label": "toilet",
            "category": "prop",
            "position_hint": "inside bathroom on the wall opposite or beside sink",
            "base_layer_decision": "base_persistent_fixture",
            "render_role": "not_applicable",
            "top_down_legibility": "not_applicable"
          },
          {
            "number": 27,
            "label": "wet shower drain",
            "category": "prop",
            "position_hint": "rear corner of compact bathroom wet area",
            "base_layer_decision": "base_persistent_fixture",
            "render_role": "not_applicable",
            "top_down_legibility": "not_applicable"
          },
          {
            "number": 28,
            "label": "bathroom mirror",
            "category": "prop",
            "position_hint": "above bathroom sink on bathroom wall",
            "base_layer_decision": "base_persistent_fixture",
            "render_role": "not_applicable",
            "top_down_legibility": "not_applicable"
          },
          {
            "number": 29,
            "label": "bedroom wall above bed",
            "category": "area",
            "position_hint": "wall surface over or beside daughter bed, used as recurring wall anchor",
            "base_layer_decision": "base_structural_unit",
            "render_role": "not_applicable",
            "top_down_legibility": "not_applicable"
          },
          {
            "number": 30,
            "label": "low shoe cabinet strip",
            "category": "furniture",
            "position_hint": "inside entry threshold beside exterior metal door",
            "base_layer_decision": "base_persistent_fixture",
            "render_role": "not_applicable",
            "top_down_legibility": "not_applicable"
          }
        ],
        "transient_markers_to_describe": [],
        "ignored_state_overlay_markers": [
          {
            "number": 31,
            "label": "TV news broadcast on screen",
            "category": "prop",
            "position_hint": "on TV screen at number 19 in shared living area",
            "base_layer_decision": "state_overlay_plot_cue",
            "render_role": "not_applicable",
            "top_down_legibility": "not_applicable"
          },
          {
            "number": 32,
            "label": "steaming pot and herbs",
            "category": "prop",
            "position_hint": "at kitchen sink and stovetop area, numbers 15 and 16",
            "base_layer_decision": "state_overlay_transient_object",
            "render_role": "not_applicable",
            "top_down_legibility": "not_applicable"
          },
          {
            "number": 33,
            "label": "circular wrist mark on resident",
            "category": "prop",
            "position_hint": "on a person near dining table and kitchen in the daytime domestic state",
            "base_layer_decision": "state_overlay_plot_cue",
            "render_role": "not_applicable",
            "top_down_legibility": "not_applicable"
          },
          {
            "number": 34,
            "label": "two tea cups, one overturned",
            "category": "prop",
            "position_hint": "on dining table at number 17 during night discovery state",
            "base_layer_decision": "state_overlay_transient_object",
            "render_role": "not_applicable",
            "top_down_legibility": "not_applicable"
          },
          {
            "number": 35,
            "label": "blood stains and footprint trail",
            "category": "prop",
            "position_hint": "from daughter bedroom floor toward curtain at number 22",
            "base_layer_decision": "state_overlay_plot_cue",
            "render_role": "not_applicable",
            "top_down_legibility": "not_applicable"
          },
          {
            "number": 36,
            "label": "body behind curtain",
            "category": "prop",
            "position_hint": "seated on floor behind daughter curtain at number 22",
            "base_layer_decision": "state_overlay_transient_object",
            "render_role": "not_applicable",
            "top_down_legibility": "not_applicable"
          },
          {
            "number": 37,
            "label": "crumpled photo in hand",
            "category": "prop",
            "position_hint": "with the body near number 36 during discovery state",
            "base_layer_decision": "state_overlay_transient_object",
            "render_role": "not_applicable",
            "top_down_legibility": "not_applicable"
          },
          {
            "number": 38,
            "label": "red circle on bedroom wall",
            "category": "prop",
            "position_hint": "on bedroom wall above bed at number 29",
            "base_layer_decision": "state_overlay_plot_cue",
            "render_role": "not_applicable",
            "top_down_legibility": "not_applicable"
          },
          {
            "number": 39,
            "label": "bathroom mirror red circle apparition",
            "category": "prop",
            "position_hint": "within reflection surface of bathroom mirror at number 28",
            "base_layer_decision": "state_overlay_plot_cue",
            "render_role": "not_applicable",
            "top_down_legibility": "not_applicable"
          },
          {
            "number": 40,
            "label": "distorted tabletop family photo",
            "category": "prop",
            "position_hint": "on or near dining table at number 17 during hallucination state",
            "base_layer_decision": "state_overlay_plot_cue",
            "render_role": "not_applicable",
            "top_down_legibility": "not_applicable"
          },
          {
            "number": 41,
            "label": "ransacked belongings pulled out",
            "category": "prop",
            "position_hint": "scattered across shared area and daughter's bedroom during dusk search state",
            "base_layer_decision": "state_overlay_transient_object",
            "render_role": "not_applicable",
            "top_down_legibility": "not_applicable"
          },
          {
            "number": 42,
            "label": "footprint tracks across living area",
            "category": "prop",
            "position_hint": "crossing entry threshold and shared living dining area toward interior rooms",
            "base_layer_decision": "state_overlay_plot_cue",
            "render_role": "not_applicable",
            "top_down_legibility": "not_applicable"
          },
          {
            "number": 43,
            "label": "living window open state",
            "category": "opening",
            "position_hint": "at small living room window number 12, shown open only in ransacked state",
            "base_layer_decision": "state_overlay_plot_cue",
            "render_role": "not_applicable",
            "top_down_legibility": "not_applicable"
          },
          {
            "number": 44,
            "label": "fallen dining chairs",
            "category": "furniture",
            "position_hint": "around dining table number 17 during ransacked state",
            "base_layer_decision": "state_overlay_transient_object",
            "render_role": "not_applicable",
            "top_down_legibility": "not_applicable"
          },
          {
            "number": 45,
            "label": "blood-stained old photo pinned or held",
            "category": "prop",
            "position_hint": "center of red circle on bedroom wall number 38, later in hand as clue",
            "base_layer_decision": "state_overlay_transient_object",
            "render_role": "not_applicable",
            "top_down_legibility": "not_applicable"
          },
          {
            "number": 46,
            "label": "backpack and doll subtly shifted",
            "category": "prop",
            "position_hint": "inside daughter bedroom near storage or bed, slightly different from prior arrangement",
            "base_layer_decision": "state_overlay_transient_object",
            "render_role": "not_applicable",
            "top_down_legibility": "not_applicable"
          }
        ],
        "target_unit_marker_numbers": [
          1,
          2,
          3,
          4,
          5,
          6,
          7,
          29
        ],
        "dominant_target_unit_marker_number": null,
        "clean_background_expected": true,
        "diagnostics": [
          "multiple base_structural_unit markers in use_numbered_elements ([1, 2, 3, 4, 5, 6, 7, 29]); dominant_target_unit_marker_number left empty (W19B-1 lock — no lexical disambiguation)"
        ]
      },
      "L05B02": {
        "bg_id": "L05B02",
        "fp_id": "fp_l05_rooftop_unit_interior",
        "use_numbered_elements": [
          2,
          3,
          6,
          11,
          12,
          17,
          18,
          25,
          26,
          27,
          28,
          39,
          40
        ],
        "ignore_numbered_elements": [
          31,
          32,
          33,
          34,
          35,
          36,
          37,
          38,
          41,
          42,
          43,
          44,
          45,
          46
        ],
        "base_markers_to_reference": [
          {
            "number": 2,
            "label": "shared living dining area",
            "category": "area",
            "position_hint": "central main room occupying the largest open area",
            "base_layer_decision": "base_structural_unit",
            "render_role": "not_applicable",
            "top_down_legibility": "not_applicable"
          },
          {
            "number": 3,
            "label": "kitchen service strip",
            "category": "area",
            "position_hint": "west or northwest wall of the shared room as a narrow counter zone",
            "base_layer_decision": "base_structural_unit",
            "render_role": "not_applicable",
            "top_down_legibility": "not_applicable"
          },
          {
            "number": 6,
            "label": "bathroom wet room area",
            "category": "area",
            "position_hint": "south or southeast side near the entry threshold",
            "base_layer_decision": "base_structural_unit",
            "render_role": "not_applicable",
            "top_down_legibility": "not_applicable"
          },
          {
            "number": 11,
            "label": "bathroom hinged door",
            "category": "opening",
            "position_hint": "south side of shared area near entry threshold",
            "base_layer_decision": "base_opening",
            "render_role": "not_applicable",
            "top_down_legibility": "not_applicable"
          },
          {
            "number": 12,
            "label": "small living room window",
            "category": "opening",
            "position_hint": "outer wall of shared living area, drawn as a short double-line window",
            "base_layer_decision": "base_opening",
            "render_role": "not_applicable",
            "top_down_legibility": "not_applicable"
          },
          {
            "number": 17,
            "label": "dining table",
            "category": "furniture",
            "position_hint": "center-south portion of shared living dining area",
            "base_layer_decision": "base_persistent_furniture",
            "render_role": "not_applicable",
            "top_down_legibility": "not_applicable"
          },
          {
            "number": 18,
            "label": "dining chair set",
            "category": "furniture",
            "position_hint": "around dining table in the shared living dining area",
            "base_layer_decision": "base_persistent_furniture",
            "render_role": "not_applicable",
            "top_down_legibility": "not_applicable"
          },
          {
            "number": 25,
            "label": "bathroom sink",
            "category": "prop",
            "position_hint": "inside bathroom near the door",
            "base_layer_decision": "base_persistent_fixture",
            "render_role": "not_applicable",
            "top_down_legibility": "not_applicable"
          },
          {
            "number": 26,
            "label": "toilet",
            "category": "prop",
            "position_hint": "inside bathroom on the wall opposite or beside sink",
            "base_layer_decision": "base_persistent_fixture",
            "render_role": "not_applicable",
            "top_down_legibility": "not_applicable"
          },
          {
            "number": 27,
            "label": "wet shower drain",
            "category": "prop",
            "position_hint": "rear corner of compact bathroom wet area",
            "base_layer_decision": "base_persistent_fixture",
            "render_role": "not_applicable",
            "top_down_legibility": "not_applicable"
          },
          {
            "number": 28,
            "label": "bathroom mirror",
            "category": "prop",
            "position_hint": "above bathroom sink on bathroom wall",
            "base_layer_decision": "base_persistent_fixture",
            "render_role": "not_applicable",
            "top_down_legibility": "not_applicable"
          }
        ],
        "transient_markers_to_describe": [
          {
            "number": 39,
            "label": "bathroom mirror red circle apparition",
            "category": "prop",
            "position_hint": "within reflection surface of bathroom mirror at number 28",
            "base_layer_decision": "state_overlay_plot_cue",
            "render_role": "not_applicable",
            "top_down_legibility": "not_applicable"
          },
          {
            "number": 40,
            "label": "distorted tabletop family photo",
            "category": "prop",
            "position_hint": "on or near dining table at number 17 during hallucination state",
            "base_layer_decision": "state_overlay_plot_cue",
            "render_role": "not_applicable",
            "top_down_legibility": "not_applicable"
          }
        ],
        "ignored_state_overlay_markers": [
          {
            "number": 31,
            "label": "TV news broadcast on screen",
            "category": "prop",
            "position_hint": "on TV screen at number 19 in shared living area",
            "base_layer_decision": "state_overlay_plot_cue",
            "render_role": "not_applicable",
            "top_down_legibility": "not_applicable"
          },
          {
            "number": 32,
            "label": "steaming pot and herbs",
            "category": "prop",
            "position_hint": "at kitchen sink and stovetop area, numbers 15 and 16",
            "base_layer_decision": "state_overlay_transient_object",
            "render_role": "not_applicable",
            "top_down_legibility": "not_applicable"
          },
          {
            "number": 33,
            "label": "circular wrist mark on resident",
            "category": "prop",
            "position_hint": "on a person near dining table and kitchen in the daytime domestic state",
            "base_layer_decision": "state_overlay_plot_cue",
            "render_role": "not_applicable",
            "top_down_legibility": "not_applicable"
          },
          {
            "number": 34,
            "label": "two tea cups, one overturned",
            "category": "prop",
            "position_hint": "on dining table at number 17 during night discovery state",
            "base_layer_decision": "state_overlay_transient_object",
            "render_role": "not_applicable",
            "top_down_legibility": "not_applicable"
          },
          {
            "number": 35,
            "label": "blood stains and footprint trail",
            "category": "prop",
            "position_hint": "from daughter bedroom floor toward curtain at number 22",
            "base_layer_decision": "state_overlay_plot_cue",
            "render_role": "not_applicable",
            "top_down_legibility": "not_applicable"
          },
          {
            "number": 36,
            "label": "body behind curtain",
            "category": "prop",
            "position_hint": "seated on floor behind daughter curtain at number 22",
            "base_layer_decision": "state_overlay_transient_object",
            "render_role": "not_applicable",
            "top_down_legibility": "not_applicable"
          },
          {
            "number": 37,
            "label": "crumpled photo in hand",
            "category": "prop",
            "position_hint": "with the body near number 36 during discovery state",
            "base_layer_decision": "state_overlay_transient_object",
            "render_role": "not_applicable",
            "top_down_legibility": "not_applicable"
          },
          {
            "number": 38,
            "label": "red circle on bedroom wall",
            "category": "prop",
            "position_hint": "on bedroom wall above bed at number 29",
            "base_layer_decision": "state_overlay_plot_cue",
            "render_role": "not_applicable",
            "top_down_legibility": "not_applicable"
          },
          {
            "number": 41,
            "label": "ransacked belongings pulled out",
            "category": "prop",
            "position_hint": "scattered across shared area and daughter's bedroom during dusk search state",
            "base_layer_decision": "state_overlay_transient_object",
            "render_role": "not_applicable",
            "top_down_legibility": "not_applicable"
          },
          {
            "number": 42,
            "label": "footprint tracks across living area",
            "category": "prop",
            "position_hint": "crossing entry threshold and shared living dining area toward interior rooms",
            "base_layer_decision": "state_overlay_plot_cue",
            "render_role": "not_applicable",
            "top_down_legibility": "not_applicable"
          },
          {
            "number": 43,
            "label": "living window open state",
            "category": "opening",
            "position_hint": "at small living room window number 12, shown open only in ransacked state",
            "base_layer_decision": "state_overlay_plot_cue",
            "render_role": "not_applicable",
            "top_down_legibility": "not_applicable"
          },
          {
            "number": 44,
            "label": "fallen dining chairs",
            "category": "furniture",
            "position_hint": "around dining table number 17 during ransacked state",
            "base_layer_decision": "state_overlay_transient_object",
            "render_role": "not_applicable",
            "top_down_legibility": "not_applicable"
          },
          {
            "number": 45,
            "label": "blood-stained old photo pinned or held",
            "category": "prop",
            "position_hint": "center of red circle on bedroom wall number 38, later in hand as clue",
            "base_layer_decision": "state_overlay_transient_object",
            "render_role": "not_applicable",
            "top_down_legibility": "not_applicable"
          },
          {
            "number": 46,
            "label": "backpack and doll subtly shifted",
            "category": "prop",
            "position_hint": "inside daughter bedroom near storage or bed, slightly different from prior arrangement",
            "base_layer_decision": "state_overlay_transient_object",
            "render_role": "not_applicable",
            "top_down_legibility": "not_applicable"
          }
        ],
        "target_unit_marker_numbers": [
          2,
          3,
          6
        ],
        "dominant_target_unit_marker_number": null,
        "clean_background_expected": false,
        "diagnostics": [
          "multiple base_structural_unit markers in use_numbered_elements ([2, 3, 6]); dominant_target_unit_marker_number left empty (W19B-1 lock — no lexical disambiguation)"
        ]
      },
      "L05B05": {
        "bg_id": "L05B05",
        "fp_id": "fp_l05_rooftop_unit_interior",
        "use_numbered_elements": [
          1,
          2,
          3,
          5,
          6,
          8,
          9,
          11,
          12,
          13,
          15,
          16,
          17,
          18,
          19,
          20,
          21,
          22,
          29,
          30,
          41,
          42,
          43,
          44
        ],
        "ignore_numbered_elements": [
          31,
          32,
          33,
          34,
          35,
          36,
          37,
          38,
          39,
          40,
          45,
          46
        ],
        "base_markers_to_reference": [
          {
            "number": 1,
            "label": "entry threshold area",
            "category": "area",
            "position_hint": "southwest interior corner directly inside the exterior metal door",
            "base_layer_decision": "base_structural_unit",
            "render_role": "not_applicable",
            "top_down_legibility": "not_applicable"
          },
          {
            "number": 2,
            "label": "shared living dining area",
            "category": "area",
            "position_hint": "central main room occupying the largest open area",
            "base_layer_decision": "base_structural_unit",
            "render_role": "not_applicable",
            "top_down_legibility": "not_applicable"
          },
          {
            "number": 3,
            "label": "kitchen service strip",
            "category": "area",
            "position_hint": "west or northwest wall of the shared room as a narrow counter zone",
            "base_layer_decision": "base_structural_unit",
            "render_role": "not_applicable",
            "top_down_legibility": "not_applicable"
          },
          {
            "number": 5,
            "label": "daughter bedroom area",
            "category": "area",
            "position_hint": "northeast private room off the shared area",
            "base_layer_decision": "base_structural_unit",
            "render_role": "not_applicable",
            "top_down_legibility": "not_applicable"
          },
          {
            "number": 6,
            "label": "bathroom wet room area",
            "category": "area",
            "position_hint": "south or southeast side near the entry threshold",
            "base_layer_decision": "base_structural_unit",
            "render_role": "not_applicable",
            "top_down_legibility": "not_applicable"
          },
          {
            "number": 8,
            "label": "exterior metal entry door",
            "category": "opening",
            "position_hint": "southwest wall between rooftop landing and entry threshold, inward swing shown",
            "base_layer_decision": "base_opening",
            "render_role": "not_applicable",
            "top_down_legibility": "not_applicable"
          },
          {
            "number": 9,
            "label": "daughter bedroom hinged door",
            "category": "opening",
            "position_hint": "east side of shared area opening into daughter bedroom",
            "base_layer_decision": "base_opening",
            "render_role": "not_applicable",
            "top_down_legibility": "not_applicable"
          },
          {
            "number": 11,
            "label": "bathroom hinged door",
            "category": "opening",
            "position_hint": "south side of shared area near entry threshold",
            "base_layer_decision": "base_opening",
            "render_role": "not_applicable",
            "top_down_legibility": "not_applicable"
          },
          {
            "number": 12,
            "label": "small living room window",
            "category": "opening",
            "position_hint": "outer wall of shared living area, drawn as a short double-line window",
            "base_layer_decision": "base_opening",
            "render_role": "not_applicable",
            "top_down_legibility": "not_applicable"
          },
          {
            "number": 13,
            "label": "daughter room sliding window",
            "category": "opening",
            "position_hint": "outer wall of daughter bedroom behind or beside the curtain",
            "base_layer_decision": "base_opening",
            "render_role": "not_applicable",
            "top_down_legibility": "not_applicable"
          },
          {
            "number": 15,
            "label": "kitchen sink and faucet",
            "category": "prop",
            "position_hint": "within kitchen service strip along the west or northwest counter",
            "base_layer_decision": "base_persistent_fixture",
            "render_role": "not_applicable",
            "top_down_legibility": "not_applicable"
          },
          {
            "number": 16,
            "label": "stovetop and counter",
            "category": "prop",
            "position_hint": "adjacent to kitchen sink within the kitchen service strip",
            "base_layer_decision": "base_persistent_fixture",
            "render_role": "not_applicable",
            "top_down_legibility": "not_applicable"
          },
          {
            "number": 17,
            "label": "dining table",
            "category": "furniture",
            "position_hint": "center-south portion of shared living dining area",
            "base_layer_decision": "base_persistent_furniture",
            "render_role": "not_applicable",
            "top_down_legibility": "not_applicable"
          },
          {
            "number": 18,
            "label": "dining chair set",
            "category": "furniture",
            "position_hint": "around dining table in the shared living dining area",
            "base_layer_decision": "base_persistent_furniture",
            "render_role": "not_applicable",
            "top_down_legibility": "not_applicable"
          },
          {
            "number": 19,
            "label": "TV on low stand",
            "category": "furniture",
            "position_hint": "opposite dining table along an interior wall of the shared area",
            "base_layer_decision": "base_persistent_furniture",
            "render_role": "not_applicable",
            "top_down_legibility": "not_applicable"
          },
          {
            "number": 20,
            "label": "living floor lamp",
            "category": "furniture",
            "position_hint": "corner of shared living area near TV or sofa-less sitting zone",
            "base_layer_decision": "base_persistent_furniture",
            "render_role": "not_applicable",
            "top_down_legibility": "not_applicable"
          },
          {
            "number": 21,
            "label": "daughter bed",
            "category": "furniture",
            "position_hint": "against one wall of daughter bedroom, below or near the marked wall area",
            "base_layer_decision": "base_persistent_furniture",
            "render_role": "not_applicable",
            "top_down_legibility": "not_applicable"
          },
          {
            "number": 22,
            "label": "daughter curtain",
            "category": "furniture",
            "position_hint": "inside daughter bedroom at the sliding window, forming a concealed corner",
            "base_layer_decision": "base_persistent_furniture",
            "render_role": "not_applicable",
            "top_down_legibility": "not_applicable"
          },
          {
            "number": 29,
            "label": "bedroom wall above bed",
            "category": "area",
            "position_hint": "wall surface over or beside daughter bed, used as recurring wall anchor",
            "base_layer_decision": "base_structural_unit",
            "render_role": "not_applicable",
            "top_down_legibility": "not_applicable"
          },
          {
            "number": 30,
            "label": "low shoe cabinet strip",
            "category": "furniture",
            "position_hint": "inside entry threshold beside exterior metal door",
            "base_layer_decision": "base_persistent_fixture",
            "render_role": "not_applicable",
            "top_down_legibility": "not_applicable"
          }
        ],
        "transient_markers_to_describe": [
          {
            "number": 41,
            "label": "ransacked belongings pulled out",
            "category": "prop",
            "position_hint": "scattered across shared area and daughter's bedroom during dusk search state",
            "base_layer_decision": "state_overlay_transient_object",
            "render_role": "not_applicable",
            "top_down_legibility": "not_applicable"
          },
          {
            "number": 42,
            "label": "footprint tracks across living area",
            "category": "prop",
            "position_hint": "crossing entry threshold and shared living dining area toward interior rooms",
            "base_layer_decision": "state_overlay_plot_cue",
            "render_role": "not_applicable",
            "top_down_legibility": "not_applicable"
          },
          {
            "number": 43,
            "label": "living window open state",
            "category": "opening",
            "position_hint": "at small living room window number 12, shown open only in ransacked state",
            "base_layer_decision": "state_overlay_plot_cue",
            "render_role": "not_applicable",
            "top_down_legibility": "not_applicable"
          },
          {
            "number": 44,
            "label": "fallen dining chairs",
            "category": "furniture",
            "position_hint": "around dining table number 17 during ransacked state",
            "base_layer_decision": "state_overlay_transient_object",
            "render_role": "not_applicable",
            "top_down_legibility": "not_applicable"
          }
        ],
        "ignored_state_overlay_markers": [
          {
            "number": 31,
            "label": "TV news broadcast on screen",
            "category": "prop",
            "position_hint": "on TV screen at number 19 in shared living area",
            "base_layer_decision": "state_overlay_plot_cue",
            "render_role": "not_applicable",
            "top_down_legibility": "not_applicable"
          },
          {
            "number": 32,
            "label": "steaming pot and herbs",
            "category": "prop",
            "position_hint": "at kitchen sink and stovetop area, numbers 15 and 16",
            "base_layer_decision": "state_overlay_transient_object",
            "render_role": "not_applicable",
            "top_down_legibility": "not_applicable"
          },
          {
            "number": 33,
            "label": "circular wrist mark on resident",
            "category": "prop",
            "position_hint": "on a person near dining table and kitchen in the daytime domestic state",
            "base_layer_decision": "state_overlay_plot_cue",
            "render_role": "not_applicable",
            "top_down_legibility": "not_applicable"
          },
          {
            "number": 34,
            "label": "two tea cups, one overturned",
            "category": "prop",
            "position_hint": "on dining table at number 17 during night discovery state",
            "base_layer_decision": "state_overlay_transient_object",
            "render_role": "not_applicable",
            "top_down_legibility": "not_applicable"
          },
          {
            "number": 35,
            "label": "blood stains and footprint trail",
            "category": "prop",
            "position_hint": "from daughter bedroom floor toward curtain at number 22",
            "base_layer_decision": "state_overlay_plot_cue",
            "render_role": "not_applicable",
            "top_down_legibility": "not_applicable"
          },
          {
            "number": 36,
            "label": "body behind curtain",
            "category": "prop",
            "position_hint": "seated on floor behind daughter curtain at number 22",
            "base_layer_decision": "state_overlay_transient_object",
            "render_role": "not_applicable",
            "top_down_legibility": "not_applicable"
          },
          {
            "number": 37,
            "label": "crumpled photo in hand",
            "category": "prop",
            "position_hint": "with the body near number 36 during discovery state",
            "base_layer_decision": "state_overlay_transient_object",
            "render_role": "not_applicable",
            "top_down_legibility": "not_applicable"
          },
          {
            "number": 38,
            "label": "red circle on bedroom wall",
            "category": "prop",
            "position_hint": "on bedroom wall above bed at number 29",
            "base_layer_decision": "state_overlay_plot_cue",
            "render_role": "not_applicable",
            "top_down_legibility": "not_applicable"
          },
          {
            "number": 39,
            "label": "bathroom mirror red circle apparition",
            "category": "prop",
            "position_hint": "within reflection surface of bathroom mirror at number 28",
            "base_layer_decision": "state_overlay_plot_cue",
            "render_role": "not_applicable",
            "top_down_legibility": "not_applicable"
          },
          {
            "number": 40,
            "label": "distorted tabletop family photo",
            "category": "prop",
            "position_hint": "on or near dining table at number 17 during hallucination state",
            "base_layer_decision": "state_overlay_plot_cue",
            "render_role": "not_applicable",
            "top_down_legibility": "not_applicable"
          },
          {
            "number": 45,
            "label": "blood-stained old photo pinned or held",
            "category": "prop",
            "position_hint": "center of red circle on bedroom wall number 38, later in hand as clue",
            "base_layer_decision": "state_overlay_transient_object",
            "render_role": "not_applicable",
            "top_down_legibility": "not_applicable"
          },
          {
            "number": 46,
            "label": "backpack and doll subtly shifted",
            "category": "prop",
            "position_hint": "inside daughter bedroom near storage or bed, slightly different from prior arrangement",
            "base_layer_decision": "state_overlay_transient_object",
            "render_role": "not_applicable",
            "top_down_legibility": "not_applicable"
          }
        ],
        "target_unit_marker_numbers": [
          1,
          2,
          3,
          5,
          6,
          29
        ],
        "dominant_target_unit_marker_number": null,
        "clean_background_expected": false,
        "diagnostics": [
          "multiple base_structural_unit markers in use_numbered_elements ([1, 2, 3, 5, 6, 29]); dominant_target_unit_marker_number left empty (W19B-1 lock — no lexical disambiguation)"
        ]
      },
      "L05B04": {
        "bg_id": "L05B04",
        "fp_id": "fp_l05_rooftop_unit_interior",
        "use_numbered_elements": [
          2,
          5,
          9,
          13,
          21,
          22,
          24,
          29,
          38,
          41,
          45
        ],
        "ignore_numbered_elements": [
          31,
          32,
          33,
          34,
          35,
          36,
          37,
          39,
          40,
          42,
          43,
          44,
          46
        ],
        "base_markers_to_reference": [
          {
            "number": 2,
            "label": "shared living dining area",
            "category": "area",
            "position_hint": "central main room occupying the largest open area",
            "base_layer_decision": "base_structural_unit",
            "render_role": "not_applicable",
            "top_down_legibility": "not_applicable"
          },
          {
            "number": 5,
            "label": "daughter bedroom area",
            "category": "area",
            "position_hint": "northeast private room off the shared area",
            "base_layer_decision": "base_structural_unit",
            "render_role": "not_applicable",
            "top_down_legibility": "not_applicable"
          },
          {
            "number": 9,
            "label": "daughter bedroom hinged door",
            "category": "opening",
            "position_hint": "east side of shared area opening into daughter bedroom",
            "base_layer_decision": "base_opening",
            "render_role": "not_applicable",
            "top_down_legibility": "not_applicable"
          },
          {
            "number": 13,
            "label": "daughter room sliding window",
            "category": "opening",
            "position_hint": "outer wall of daughter bedroom behind or beside the curtain",
            "base_layer_decision": "base_opening",
            "render_role": "not_applicable",
            "top_down_legibility": "not_applicable"
          },
          {
            "number": 21,
            "label": "daughter bed",
            "category": "furniture",
            "position_hint": "against one wall of daughter bedroom, below or near the marked wall area",
            "base_layer_decision": "base_persistent_furniture",
            "render_role": "not_applicable",
            "top_down_legibility": "not_applicable"
          },
          {
            "number": 22,
            "label": "daughter curtain",
            "category": "furniture",
            "position_hint": "inside daughter bedroom at the sliding window, forming a concealed corner",
            "base_layer_decision": "base_persistent_furniture",
            "render_role": "not_applicable",
            "top_down_legibility": "not_applicable"
          },
          {
            "number": 24,
            "label": "compact wardrobe storage",
            "category": "furniture",
            "position_hint": "inside daughter bedroom or along shared-room partition wall as built-in storage",
            "base_layer_decision": "base_persistent_furniture",
            "render_role": "not_applicable",
            "top_down_legibility": "not_applicable"
          },
          {
            "number": 29,
            "label": "bedroom wall above bed",
            "category": "area",
            "position_hint": "wall surface over or beside daughter bed, used as recurring wall anchor",
            "base_layer_decision": "base_structural_unit",
            "render_role": "not_applicable",
            "top_down_legibility": "not_applicable"
          }
        ],
        "transient_markers_to_describe": [
          {
            "number": 38,
            "label": "red circle on bedroom wall",
            "category": "prop",
            "position_hint": "on bedroom wall above bed at number 29",
            "base_layer_decision": "state_overlay_plot_cue",
            "render_role": "not_applicable",
            "top_down_legibility": "not_applicable"
          },
          {
            "number": 41,
            "label": "ransacked belongings pulled out",
            "category": "prop",
            "position_hint": "scattered across shared area and daughter's bedroom during dusk search state",
            "base_layer_decision": "state_overlay_transient_object",
            "render_role": "not_applicable",
            "top_down_legibility": "not_applicable"
          },
          {
            "number": 45,
            "label": "blood-stained old photo pinned or held",
            "category": "prop",
            "position_hint": "center of red circle on bedroom wall number 38, later in hand as clue",
            "base_layer_decision": "state_overlay_transient_object",
            "render_role": "not_applicable",
            "top_down_legibility": "not_applicable"
          }
        ],
        "ignored_state_overlay_markers": [
          {
            "number": 31,
            "label": "TV news broadcast on screen",
            "category": "prop",
            "position_hint": "on TV screen at number 19 in shared living area",
            "base_layer_decision": "state_overlay_plot_cue",
            "render_role": "not_applicable",
            "top_down_legibility": "not_applicable"
          },
          {
            "number": 32,
            "label": "steaming pot and herbs",
            "category": "prop",
            "position_hint": "at kitchen sink and stovetop area, numbers 15 and 16",
            "base_layer_decision": "state_overlay_transient_object",
            "render_role": "not_applicable",
            "top_down_legibility": "not_applicable"
          },
          {
            "number": 33,
            "label": "circular wrist mark on resident",
            "category": "prop",
            "position_hint": "on a person near dining table and kitchen in the daytime domestic state",
            "base_layer_decision": "state_overlay_plot_cue",
            "render_role": "not_applicable",
            "top_down_legibility": "not_applicable"
          },
          {
            "number": 34,
            "label": "two tea cups, one overturned",
            "category": "prop",
            "position_hint": "on dining table at number 17 during night discovery state",
            "base_layer_decision": "state_overlay_transient_object",
            "render_role": "not_applicable",
            "top_down_legibility": "not_applicable"
          },
          {
            "number": 35,
            "label": "blood stains and footprint trail",
            "category": "prop",
            "position_hint": "from daughter bedroom floor toward curtain at number 22",
            "base_layer_decision": "state_overlay_plot_cue",
            "render_role": "not_applicable",
            "top_down_legibility": "not_applicable"
          },
          {
            "number": 36,
            "label": "body behind curtain",
            "category": "prop",
            "position_hint": "seated on floor behind daughter curtain at number 22",
            "base_layer_decision": "state_overlay_transient_object",
            "render_role": "not_applicable",
            "top_down_legibility": "not_applicable"
          },
          {
            "number": 37,
            "label": "crumpled photo in hand",
            "category": "prop",
            "position_hint": "with the body near number 36 during discovery state",
            "base_layer_decision": "state_overlay_transient_object",
            "render_role": "not_applicable",
            "top_down_legibility": "not_applicable"
          },
          {
            "number": 39,
            "label": "bathroom mirror red circle apparition",
            "category": "prop",
            "position_hint": "within reflection surface of bathroom mirror at number 28",
            "base_layer_decision": "state_overlay_plot_cue",
            "render_role": "not_applicable",
            "top_down_legibility": "not_applicable"
          },
          {
            "number": 40,
            "label": "distorted tabletop family photo",
            "category": "prop",
            "position_hint": "on or near dining table at number 17 during hallucination state",
            "base_layer_decision": "state_overlay_plot_cue",
            "render_role": "not_applicable",
            "top_down_legibility": "not_applicable"
          },
          {
            "number": 42,
            "label": "footprint tracks across living area",
            "category": "prop",
            "position_hint": "crossing entry threshold and shared living dining area toward interior rooms",
            "base_layer_decision": "state_overlay_plot_cue",
            "render_role": "not_applicable",
            "top_down_legibility": "not_applicable"
          },
          {
            "number": 43,
            "label": "living window open state",
            "category": "opening",
            "position_hint": "at small living room window number 12, shown open only in ransacked state",
            "base_layer_decision": "state_overlay_plot_cue",
            "render_role": "not_applicable",
            "top_down_legibility": "not_applicable"
          },
          {
            "number": 44,
            "label": "fallen dining chairs",
            "category": "furniture",
            "position_hint": "around dining table number 17 during ransacked state",
            "base_layer_decision": "state_overlay_transient_object",
            "render_role": "not_applicable",
            "top_down_legibility": "not_applicable"
          },
          {
            "number": 46,
            "label": "backpack and doll subtly shifted",
            "category": "prop",
            "position_hint": "inside daughter bedroom near storage or bed, slightly different from prior arrangement",
            "base_layer_decision": "state_overlay_transient_object",
            "render_role": "not_applicable",
            "top_down_legibility": "not_applicable"
          }
        ],
        "target_unit_marker_numbers": [
          2,
          5,
          29
        ],
        "dominant_target_unit_marker_number": null,
        "clean_background_expected": false,
        "diagnostics": [
          "multiple base_structural_unit markers in use_numbered_elements ([2, 5, 29]); dominant_target_unit_marker_number left empty (W19B-1 lock — no lexical disambiguation)"
        ]
      },
      "L11B03": {
        "bg_id": "L11B03",
        "fp_id": "fp_l11_rooftop_stairs",
        "use_numbered_elements": [
          6,
          7,
          8,
          9,
          10,
          11,
          12,
          13,
          14,
          15,
          16,
          18
        ],
        "ignore_numbered_elements": [
          17
        ],
        "base_markers_to_reference": [
          {
            "number": 6,
            "label": "rooftop landing",
            "category": "area",
            "position_hint": "north-central roof level, directly before the unit threshold",
            "base_layer_decision": "base_structural_unit",
            "render_role": "not_applicable",
            "top_down_legibility": "not_applicable"
          },
          {
            "number": 7,
            "label": "roof unit threshold alcove",
            "category": "area",
            "position_hint": "north wall of rooftop landing, immediately outside the entrance door",
            "base_layer_decision": "base_structural_unit",
            "render_role": "not_applicable",
            "top_down_legibility": "not_applicable"
          },
          {
            "number": 8,
            "label": "iron entrance door",
            "category": "opening",
            "position_hint": "north side of threshold alcove, hinged on one side with standard plan swing symbol",
            "base_layer_decision": "base_opening",
            "render_role": "not_applicable",
            "top_down_legibility": "not_applicable"
          },
          {
            "number": 9,
            "label": "door latch and lock side",
            "category": "prop",
            "position_hint": "on the closing edge of the iron entrance door frame",
            "base_layer_decision": "base_persistent_fixture",
            "render_role": "not_applicable",
            "top_down_legibility": "not_applicable"
          },
          {
            "number": 10,
            "label": "small exterior window",
            "category": "opening",
            "position_hint": "east wall of rooftop unit near the entrance, shown as double parallel window lines",
            "base_layer_decision": "base_opening",
            "render_role": "not_applicable",
            "top_down_legibility": "not_applicable"
          },
          {
            "number": 11,
            "label": "rooftop water tank",
            "category": "prop",
            "position_hint": "northwest utility roof area, set back from the stair landing",
            "base_layer_decision": "base_persistent_fixture",
            "render_role": "not_applicable",
            "top_down_legibility": "not_applicable"
          },
          {
            "number": 12,
            "label": "clothesline posts",
            "category": "prop",
            "position_hint": "west side of rooftop utility zone, parallel to the landing edge",
            "base_layer_decision": "base_persistent_fixture",
            "render_role": "not_applicable",
            "top_down_legibility": "not_applicable"
          },
          {
            "number": 13,
            "label": "low drying platform",
            "category": "furniture",
            "position_hint": "west-northwest rooftop utility zone, near the clothesline",
            "base_layer_decision": "base_persistent_furniture",
            "render_role": "not_applicable",
            "top_down_legibility": "not_applicable"
          },
          {
            "number": 14,
            "label": "stair railings and parapet edges",
            "category": "prop",
            "position_hint": "continuous along both exterior stair flights and roof landing edges",
            "base_layer_decision": "base_persistent_fixture",
            "render_role": "not_applicable",
            "top_down_legibility": "not_applicable"
          }
        ],
        "transient_markers_to_describe": [
          {
            "number": 15,
            "label": "half-open door state",
            "category": "opening",
            "position_hint": "at number 8, shown only in per-background overlay for the post-break-in rooftop landing",
            "base_layer_decision": "state_overlay_plot_cue",
            "render_role": "not_applicable",
            "top_down_legibility": "not_applicable"
          },
          {
            "number": 16,
            "label": "unpleasant odor cue",
            "category": "prop",
            "position_hint": "around number 6 and number 7, perceived on arrival at the rooftop landing",
            "base_layer_decision": "state_overlay_plot_cue",
            "render_role": "not_applicable",
            "top_down_legibility": "not_applicable"
          },
          {
            "number": 18,
            "label": "forced paper flyer at door seam",
            "category": "prop",
            "position_hint": "at the seam of number 8 near number 9, tied to the break-in action",
            "base_layer_decision": "state_overlay_transient_object",
            "render_role": "not_applicable",
            "top_down_legibility": "not_applicable"
          }
        ],
        "ignored_state_overlay_markers": [
          {
            "number": 17,
            "label": "hastily parked bicycle",
            "category": "prop",
            "position_hint": "near number 2, in the recessed ground yard parking corner",
            "base_layer_decision": "state_overlay_transient_object",
            "render_role": "not_applicable",
            "top_down_legibility": "not_applicable"
          }
        ],
        "target_unit_marker_numbers": [
          6,
          7
        ],
        "dominant_target_unit_marker_number": null,
        "clean_background_expected": false,
        "diagnostics": [
          "multiple base_structural_unit markers in use_numbered_elements ([6, 7]); dominant_target_unit_marker_number left empty (W19B-1 lock — no lexical disambiguation)"
        ]
      },
      "L11B01": {
        "bg_id": "L11B01",
        "fp_id": "fp_l11_exterior_front",
        "use_numbered_elements": [
          1,
          2,
          3,
          4,
          5,
          6,
          7,
          8,
          9,
          10,
          11,
          12,
          13
        ],
        "ignore_numbered_elements": [],
        "base_markers_to_reference": [
          {
            "number": 1,
            "label": "narrow exterior road",
            "category": "area",
            "position_hint": "south edge of plan, running east-west in front of building",
            "base_layer_decision": "base_structural_unit",
            "render_role": "not_applicable",
            "top_down_legibility": "not_applicable"
          },
          {
            "number": 2,
            "label": "entrance forecourt",
            "category": "area",
            "position_hint": "center south threshold zone between road and building entrance",
            "base_layer_decision": "base_structural_unit",
            "render_role": "not_applicable",
            "top_down_legibility": "not_applicable"
          },
          {
            "number": 3,
            "label": "low-rise residential building footprint",
            "category": "area",
            "position_hint": "north half of plan, main rectangular building mass facing road",
            "base_layer_decision": "base_structural_unit",
            "render_role": "not_applicable",
            "top_down_legibility": "not_applicable"
          },
          {
            "number": 4,
            "label": "main pedestrian entrance gate",
            "category": "opening",
            "position_hint": "south face of building, aligned with forecourt approach",
            "base_layer_decision": "base_opening",
            "render_role": "not_applicable",
            "top_down_legibility": "not_applicable"
          },
          {
            "number": 5,
            "label": "exterior stair route to rooftop",
            "category": "area",
            "position_hint": "east side of building footprint, narrow stair run rising from entrance area toward roof access",
            "base_layer_decision": "base_structural_unit",
            "render_role": "not_applicable",
            "top_down_legibility": "not_applicable"
          },
          {
            "number": 6,
            "label": "recessed bicycle parking corner",
            "category": "area",
            "position_hint": "northwest or rear-left corner of forecourt, tucked beside building wall",
            "base_layer_decision": "base_structural_unit",
            "render_role": "not_applicable",
            "top_down_legibility": "not_applicable"
          },
          {
            "number": 7,
            "label": "bicycle storage rail",
            "category": "prop",
            "position_hint": "inside number 6, against side wall of recessed parking corner",
            "base_layer_decision": "base_persistent_fixture",
            "render_role": "not_applicable",
            "top_down_legibility": "not_applicable"
          },
          {
            "number": 8,
            "label": "road-facing ground-floor windows",
            "category": "opening",
            "position_hint": "south wall of building footprint, flanking the main entrance",
            "base_layer_decision": "base_opening",
            "render_role": "not_applicable",
            "top_down_legibility": "not_applicable"
          },
          {
            "number": 9,
            "label": "low boundary wall and curb line",
            "category": "prop",
            "position_hint": "between number 1 and number 2, marking edge of forecourt",
            "base_layer_decision": "base_persistent_fixture",
            "render_role": "not_applicable",
            "top_down_legibility": "not_applicable"
          },
          {
            "number": 10,
            "label": "streetlamp or utility pole",
            "category": "prop",
            "position_hint": "southwest roadside corner near the curb",
            "base_layer_decision": "base_persistent_fixture",
            "render_role": "not_applicable",
            "top_down_legibility": "not_applicable"
          },
          {
            "number": 11,
            "label": "stairwell landing opening",
            "category": "opening",
            "position_hint": "upper end of number 5, near northeast side of building where stairs continue upward",
            "base_layer_decision": "base_opening",
            "render_role": "not_applicable",
            "top_down_legibility": "not_applicable"
          }
        ],
        "transient_markers_to_describe": [
          {
            "number": 12,
            "label": "arriving emergency vehicle at curb",
            "category": "prop",
            "position_hint": "on road near south center or southeast curb, temporarily stopped in front of entrance",
            "base_layer_decision": "state_overlay_transient_object",
            "render_role": "not_applicable",
            "top_down_legibility": "not_applicable"
          },
          {
            "number": 13,
            "label": "shocked meeting position",
            "category": "prop",
            "position_hint": "at threshold between road and forecourt, just outside the entrance approach",
            "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,
          5,
          6
        ],
        "dominant_target_unit_marker_number": null,
        "clean_background_expected": false,
        "diagnostics": [
          "multiple base_structural_unit markers in use_numbered_elements ([1, 2, 3, 5, 6]); dominant_target_unit_marker_number left empty (W19B-1 lock — no lexical disambiguation)"
        ]
      },
      "L11B02": {
        "bg_id": "L11B02",
        "fp_id": "fp_l11_rooftop_stairs",
        "use_numbered_elements": [
          1,
          2,
          3,
          4,
          5,
          6,
          7,
          8,
          14,
          17
        ],
        "ignore_numbered_elements": [
          15,
          16,
          18
        ],
        "base_markers_to_reference": [
          {
            "number": 1,
            "label": "ground yard access zone",
            "category": "area",
            "position_hint": "south edge of plan, at the base of the exterior stair route",
            "base_layer_decision": "base_structural_unit",
            "render_role": "not_applicable",
            "top_down_legibility": "not_applicable"
          },
          {
            "number": 2,
            "label": "recessed yard parking corner",
            "category": "area",
            "position_hint": "southwest corner of the ground yard, tucked behind the stair start",
            "base_layer_decision": "base_structural_unit",
            "render_role": "not_applicable",
            "top_down_legibility": "not_applicable"
          },
          {
            "number": 3,
            "label": "lower steep stair flight",
            "category": "area",
            "position_hint": "rising from the south yard toward the central turn landing",
            "base_layer_decision": "base_structural_unit",
            "render_role": "not_applicable",
            "top_down_legibility": "not_applicable"
          },
          {
            "number": 4,
            "label": "mid stair turn landing",
            "category": "area",
            "position_hint": "center-left of plan, between the lower and upper stair flights",
            "base_layer_decision": "base_structural_unit",
            "render_role": "not_applicable",
            "top_down_legibility": "not_applicable"
          },
          {
            "number": 5,
            "label": "upper steep stair flight",
            "category": "area",
            "position_hint": "rising from the mid landing toward the rooftop landing at the north side",
            "base_layer_decision": "base_structural_unit",
            "render_role": "not_applicable",
            "top_down_legibility": "not_applicable"
          },
          {
            "number": 6,
            "label": "rooftop landing",
            "category": "area",
            "position_hint": "north-central roof level, directly before the unit threshold",
            "base_layer_decision": "base_structural_unit",
            "render_role": "not_applicable",
            "top_down_legibility": "not_applicable"
          },
          {
            "number": 7,
            "label": "roof unit threshold alcove",
            "category": "area",
            "position_hint": "north wall of rooftop landing, immediately outside the entrance door",
            "base_layer_decision": "base_structural_unit",
            "render_role": "not_applicable",
            "top_down_legibility": "not_applicable"
          },
          {
            "number": 8,
            "label": "iron entrance door",
            "category": "opening",
            "position_hint": "north side of threshold alcove, hinged on one side with standard plan swing symbol",
            "base_layer_decision": "base_opening",
            "render_role": "not_applicable",
            "top_down_legibility": "not_applicable"
          },
          {
            "number": 14,
            "label": "stair railings and parapet edges",
            "category": "prop",
            "position_hint": "continuous along both exterior stair flights and roof landing edges",
            "base_layer_decision": "base_persistent_fixture",
            "render_role": "not_applicable",
            "top_down_legibility": "not_applicable"
          }
        ],
        "transient_markers_to_describe": [
          {
            "number": 17,
            "label": "hastily parked bicycle",
            "category": "prop",
            "position_hint": "near number 2, in the recessed ground yard parking corner",
            "base_layer_decision": "state_overlay_transient_object",
            "render_role": "not_applicable",
            "top_down_legibility": "not_applicable"
          }
        ],
        "ignored_state_overlay_markers": [
          {
            "number": 15,
            "label": "half-open door state",
            "category": "opening",
            "position_hint": "at number 8, shown only in per-background overlay for the post-break-in rooftop landing",
            "base_layer_decision": "state_overlay_plot_cue",
            "render_role": "not_applicable",
            "top_down_legibility": "not_applicable"
          },
          {
            "number": 16,
            "label": "unpleasant odor cue",
            "category": "prop",
            "position_hint": "around number 6 and number 7, perceived on arrival at the rooftop landing",
            "base_layer_decision": "state_overlay_plot_cue",
            "render_role": "not_applicable",
            "top_down_legibility": "not_applicable"
          },
          {
            "number": 18,
            "label": "forced paper flyer at door seam",
            "category": "prop",
            "position_hint": "at the seam of number 8 near number 9, tied to the break-in action",
            "base_layer_decision": "state_overlay_transient_object",
            "render_role": "not_applicable",
            "top_down_legibility": "not_applicable"
          }
        ],
        "target_unit_marker_numbers": [
          1,
          2,
          3,
          4,
          5,
          6,
          7
        ],
        "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, 7]); dominant_target_unit_marker_number left empty (W19B-1 lock — no lexical disambiguation)"
        ]
      },
      "L09B01": {
        "bg_id": "L09B01",
        "fp_id": "fp_mart_sales_floor",
        "use_numbered_elements": [
          1,
          5,
          6,
          7,
          8,
          9,
          10,
          11,
          13,
          14
        ],
        "ignore_numbered_elements": [],
        "base_markers_to_reference": [
          {
            "number": 1,
            "label": "main sales floor shared zone",
            "category": "area",
            "position_hint": "large central rectangle occupying most of the plan",
            "base_layer_decision": "base_structural_unit",
            "render_role": "not_applicable",
            "top_down_legibility": "not_applicable"
          },
          {
            "number": 5,
            "label": "central customer circulation path",
            "category": "area",
            "position_hint": "wide north-south path running from the entrance threshold into the aisles",
            "base_layer_decision": "base_structural_unit",
            "render_role": "not_applicable",
            "top_down_legibility": "not_applicable"
          },
          {
            "number": 6,
            "label": "west shelf aisle run",
            "category": "furniture",
            "position_hint": "west side of the sales floor, long north-south gondola shelves",
            "base_layer_decision": "base_persistent_furniture",
            "render_role": "not_applicable",
            "top_down_legibility": "not_applicable"
          },
          {
            "number": 7,
            "label": "center gondola shelf run",
            "category": "furniture",
            "position_hint": "middle of the sales floor, long north-south shelf island parallel to customer path",
            "base_layer_decision": "base_persistent_furniture",
            "render_role": "not_applicable",
            "top_down_legibility": "not_applicable"
          },
          {
            "number": 8,
            "label": "east shelf aisle run",
            "category": "furniture",
            "position_hint": "east side of the sales floor, long north-south gondola shelves",
            "base_layer_decision": "base_persistent_furniture",
            "render_role": "not_applicable",
            "top_down_legibility": "not_applicable"
          },
          {
            "number": 9,
            "label": "rear refrigerated display wall",
            "category": "furniture",
            "position_hint": "north wall spanning most of the rear sales floor",
            "base_layer_decision": "base_persistent_fixture",
            "render_role": "not_applicable",
            "top_down_legibility": "not_applicable"
          },
          {
            "number": 10,
            "label": "staff stocking area",
            "category": "area",
            "position_hint": "northwest rear corner behind or beside shelf aisles",
            "base_layer_decision": "base_structural_unit",
            "render_role": "not_applicable",
            "top_down_legibility": "not_applicable"
          },
          {
            "number": 11,
            "label": "staff swing door to stockroom",
            "category": "opening",
            "position_hint": "northwest wall at the rear of the staff stocking area",
            "base_layer_decision": "base_opening",
            "render_role": "not_applicable",
            "top_down_legibility": "not_applicable"
          },
          {
            "number": 13,
            "label": "ceiling security camera fixture",
            "category": "prop",
            "position_hint": "high central rear sales floor, aimed down the main aisle",
            "base_layer_decision": "base_persistent_fixture",
            "render_role": "not_applicable",
            "top_down_legibility": "not_applicable"
          }
        ],
        "transient_markers_to_describe": [
          {
            "number": 14,
            "label": "temporary stocking boxes and hand cart",
            "category": "prop",
            "position_hint": "in the central aisle near the shelf runs, associated with active restocking",
            "base_layer_decision": "state_overlay_transient_object",
            "render_role": "not_applicable",
            "top_down_legibility": "not_applicable"
          }
        ],
        "ignored_state_overlay_markers": [],
        "target_unit_marker_numbers": [
          1,
          5,
          10
        ],
        "dominant_target_unit_marker_number": null,
        "clean_background_expected": false,
        "diagnostics": [
          "multiple base_structural_unit markers in use_numbered_elements ([1, 5, 10]); dominant_target_unit_marker_number left empty (W19B-1 lock — no lexical disambiguation)"
        ]
      },
      "L14B01": {
        "bg_id": "L14B01",
        "fp_id": "fp_cctv_security_room",
        "use_numbered_elements": [
          1,
          2,
          3,
          4,
          5,
          6,
          7,
          8,
          9,
          10,
          11,
          12
        ],
        "ignore_numbered_elements": [],
        "base_markers_to_reference": [
          {
            "number": 1,
            "label": "control work zone",
            "category": "area",
            "position_hint": "north half of the room, centered around the monitor desk and staff seat",
            "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": "central to south-central open floor area behind the staff chair",
            "base_layer_decision": "base_structural_unit",
            "render_role": "not_applicable",
            "top_down_legibility": "not_applicable"
          },
          {
            "number": 3,
            "label": "equipment storage zone",
            "category": "area",
            "position_hint": "east side strip of the room beside the control desk",
            "base_layer_decision": "base_structural_unit",
            "render_role": "not_applicable",
            "top_down_legibility": "not_applicable"
          },
          {
            "number": 4,
            "label": "corridor entrance door",
            "category": "opening",
            "position_hint": "southwest wall, inward-swinging into the room",
            "base_layer_decision": "base_opening",
            "render_role": "not_applicable",
            "top_down_legibility": "not_applicable"
          },
          {
            "number": 5,
            "label": "small interior observation window",
            "category": "opening",
            "position_hint": "west wall near the north half, facing toward the supermarket back corridor or sales-floor side",
            "base_layer_decision": "base_opening",
            "render_role": "not_applicable",
            "top_down_legibility": "not_applicable"
          },
          {
            "number": 6,
            "label": "cable pass-through opening",
            "category": "opening",
            "position_hint": "north wall just behind the monitor desk",
            "base_layer_decision": "base_opening",
            "render_role": "not_applicable",
            "top_down_legibility": "not_applicable"
          },
          {
            "number": 7,
            "label": "CCTV monitor desk",
            "category": "furniture",
            "position_hint": "against the north wall, slightly left of center",
            "base_layer_decision": "base_persistent_furniture",
            "render_role": "not_applicable",
            "top_down_legibility": "not_applicable"
          },
          {
            "number": 8,
            "label": "wall monitor array",
            "category": "prop",
            "position_hint": "north wall above the monitor desk",
            "base_layer_decision": "base_persistent_fixture",
            "render_role": "not_applicable",
            "top_down_legibility": "not_applicable"
          },
          {
            "number": 9,
            "label": "staff swivel chair",
            "category": "furniture",
            "position_hint": "immediately south of the monitor desk, facing north",
            "base_layer_decision": "base_persistent_furniture",
            "render_role": "not_applicable",
            "top_down_legibility": "not_applicable"
          },
          {
            "number": 10,
            "label": "DVR equipment cabinet",
            "category": "prop",
            "position_hint": "northeast corner beside the monitor desk",
            "base_layer_decision": "base_persistent_fixture",
            "render_role": "not_applicable",
            "top_down_legibility": "not_applicable"
          },
          {
            "number": 11,
            "label": "storage file cabinet",
            "category": "furniture",
            "position_hint": "east wall, south of the DVR equipment cabinet",
            "base_layer_decision": "base_persistent_furniture",
            "render_role": "not_applicable",
            "top_down_legibility": "not_applicable"
          }
        ],
        "transient_markers_to_describe": [
          {
            "number": 12,
            "label": "dark unclear CCTV playback on monitors",
            "category": "prop",
            "position_hint": "on the monitor screens at the north wall control station; overlay only, not drawn on the base floor plan",
            "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)"
        ]
      },
      "L13B02": {
        "bg_id": "L13B02",
        "fp_id": "fp_police_office_main",
        "use_numbered_elements": [
          1,
          2,
          3,
          4,
          5,
          6,
          8,
          9,
          10,
          12,
          13,
          14,
          15,
          16,
          17,
          18
        ],
        "ignore_numbered_elements": [
          19,
          20,
          21
        ],
        "base_markers_to_reference": [
          {
            "number": 1,
            "label": "shared desk work zone",
            "category": "area",
            "position_hint": "central and west half of the office, containing the investigator desk and secondary desk cluster",
            "base_layer_decision": "base_structural_unit",
            "render_role": "not_applicable",
            "top_down_legibility": "not_applicable"
          },
          {
            "number": 2,
            "label": "duty workstation zone",
            "category": "area",
            "position_hint": "central-east side of the office around the duty desk and monitor",
            "base_layer_decision": "base_structural_unit",
            "render_role": "not_applicable",
            "top_down_legibility": "not_applicable"
          },
          {
            "number": 3,
            "label": "service storage zone",
            "category": "area",
            "position_hint": "east and southeast wall strip with filing cabinets, copier, and coffee station",
            "base_layer_decision": "base_structural_unit",
            "render_role": "not_applicable",
            "top_down_legibility": "not_applicable"
          },
          {
            "number": 4,
            "label": "entrance circulation threshold zone",
            "category": "area",
            "position_hint": "southwest entry area and central walking aisle between desks",
            "base_layer_decision": "base_structural_unit",
            "render_role": "not_applicable",
            "top_down_legibility": "not_applicable"
          },
          {
            "number": 5,
            "label": "main office door",
            "category": "opening",
            "position_hint": "southwest wall, opening inward into the circulation threshold",
            "base_layer_decision": "base_opening",
            "render_role": "not_applicable",
            "top_down_legibility": "not_applicable"
          },
          {
            "number": 6,
            "label": "north window band",
            "category": "opening",
            "position_hint": "north exterior wall above the shared desk work zone and duty workstation zone",
            "base_layer_decision": "base_opening",
            "render_role": "not_applicable",
            "top_down_legibility": "not_applicable"
          },
          {
            "number": 8,
            "label": "investigator desk",
            "category": "furniture",
            "position_hint": "left-center of the shared work zone, desk face angled toward the duty workstation",
            "base_layer_decision": "base_persistent_furniture",
            "render_role": "not_applicable",
            "top_down_legibility": "not_applicable"
          },
          {
            "number": 9,
            "label": "duty workstation desk",
            "category": "furniture",
            "position_hint": "right-center of the duty workstation zone, facing the entrance and investigator desk",
            "base_layer_decision": "base_persistent_furniture",
            "render_role": "not_applicable",
            "top_down_legibility": "not_applicable"
          },
          {
            "number": 10,
            "label": "desktop monitor",
            "category": "prop",
            "position_hint": "on top of the duty workstation desk, rear edge facing into the room",
            "base_layer_decision": "base_persistent_fixture",
            "render_role": "not_applicable",
            "top_down_legibility": "not_applicable"
          },
          {
            "number": 12,
            "label": "filing cabinet bank",
            "category": "furniture",
            "position_hint": "along the east wall inside the service storage zone",
            "base_layer_decision": "base_persistent_furniture",
            "render_role": "not_applicable",
            "top_down_legibility": "not_applicable"
          },
          {
            "number": 13,
            "label": "printer copier station",
            "category": "prop",
            "position_hint": "southeast wall near the filing cabinets",
            "base_layer_decision": "base_persistent_fixture",
            "render_role": "not_applicable",
            "top_down_legibility": "not_applicable"
          },
          {
            "number": 14,
            "label": "coffee station",
            "category": "prop",
            "position_hint": "south wall or southeast corner, near the service storage zone and circulation aisle",
            "base_layer_decision": "base_persistent_fixture",
            "render_role": "not_applicable",
            "top_down_legibility": "not_applicable"
          },
          {
            "number": 15,
            "label": "wall notice board",
            "category": "prop",
            "position_hint": "west wall above or beside the investigator desk area",
            "base_layer_decision": "base_persistent_fixture",
            "render_role": "not_applicable",
            "top_down_legibility": "not_applicable"
          },
          {
            "number": 16,
            "label": "guest chair pair",
            "category": "furniture",
            "position_hint": "in front of the investigator desk, facing number 8",
            "base_layer_decision": "base_persistent_furniture",
            "render_role": "not_applicable",
            "top_down_legibility": "not_applicable"
          },
          {
            "number": 17,
            "label": "duty swivel chair",
            "category": "furniture",
            "position_hint": "behind the duty workstation desk at number 9",
            "base_layer_decision": "base_persistent_furniture",
            "render_role": "not_applicable",
            "top_down_legibility": "not_applicable"
          }
        ],
        "transient_markers_to_describe": [
          {
            "number": 18,
            "label": "smartphone with phone number shown",
            "category": "prop",
            "position_hint": "on or just above the duty workstation side of the desk interaction area, tied to the night inquiry moment",
            "base_layer_decision": "state_overlay_transient_object",
            "render_role": "not_applicable",
            "top_down_legibility": "not_applicable"
          }
        ],
        "ignored_state_overlay_markers": [
          {
            "number": 19,
            "label": "scattered enlargement case photos",
            "category": "prop",
            "position_hint": "spread across the investigator desk surface at number 8 during the empty daytime office state",
            "base_layer_decision": "state_overlay_transient_object",
            "render_role": "not_applicable",
            "top_down_legibility": "not_applicable"
          },
          {
            "number": 20,
            "label": "GPS location result on monitor",
            "category": "prop",
            "position_hint": "displayed on the desktop monitor at number 10 during the empty daytime office state",
            "base_layer_decision": "state_overlay_plot_cue",
            "render_role": "not_applicable",
            "top_down_legibility": "not_applicable"
          },
          {
            "number": 21,
            "label": "missing report and call request forms",
            "category": "prop",
            "position_hint": "paperwork stack on the duty workstation or investigator desk during the daytime signing and inquiry sequence",
            "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)"
        ]
      },
      "L13B01": {
        "bg_id": "L13B01",
        "fp_id": "fp_police_office_main",
        "use_numbered_elements": [
          1,
          2,
          3,
          4,
          5,
          6,
          8,
          9,
          10,
          11,
          12,
          13,
          14,
          15,
          16,
          17,
          19,
          20,
          21
        ],
        "ignore_numbered_elements": [
          18
        ],
        "base_markers_to_reference": [
          {
            "number": 1,
            "label": "shared desk work zone",
            "category": "area",
            "position_hint": "central and west half of the office, containing the investigator desk and secondary desk cluster",
            "base_layer_decision": "base_structural_unit",
            "render_role": "not_applicable",
            "top_down_legibility": "not_applicable"
          },
          {
            "number": 2,
            "label": "duty workstation zone",
            "category": "area",
            "position_hint": "central-east side of the office around the duty desk and monitor",
            "base_layer_decision": "base_structural_unit",
            "render_role": "not_applicable",
            "top_down_legibility": "not_applicable"
          },
          {
            "number": 3,
            "label": "service storage zone",
            "category": "area",
            "position_hint": "east and southeast wall strip with filing cabinets, copier, and coffee station",
            "base_layer_decision": "base_structural_unit",
            "render_role": "not_applicable",
            "top_down_legibility": "not_applicable"
          },
          {
            "number": 4,
            "label": "entrance circulation threshold zone",
            "category": "area",
            "position_hint": "southwest entry area and central walking aisle between desks",
            "base_layer_decision": "base_structural_unit",
            "render_role": "not_applicable",
            "top_down_legibility": "not_applicable"
          },
          {
            "number": 5,
            "label": "main office door",
            "category": "opening",
            "position_hint": "southwest wall, opening inward into the circulation threshold",
            "base_layer_decision": "base_opening",
            "render_role": "not_applicable",
            "top_down_legibility": "not_applicable"
          },
          {
            "number": 6,
            "label": "north window band",
            "category": "opening",
            "position_hint": "north exterior wall above the shared desk work zone and duty workstation zone",
            "base_layer_decision": "base_opening",
            "render_role": "not_applicable",
            "top_down_legibility": "not_applicable"
          },
          {
            "number": 8,
            "label": "investigator desk",
            "category": "furniture",
            "position_hint": "left-center of the shared work zone, desk face angled toward the duty workstation",
            "base_layer_decision": "base_persistent_furniture",
            "render_role": "not_applicable",
            "top_down_legibility": "not_applicable"
          },
          {
            "number": 9,
            "label": "duty workstation desk",
            "category": "furniture",
            "position_hint": "right-center of the duty workstation zone, facing the entrance and investigator desk",
            "base_layer_decision": "base_persistent_furniture",
            "render_role": "not_applicable",
            "top_down_legibility": "not_applicable"
          },
          {
            "number": 10,
            "label": "desktop monitor",
            "category": "prop",
            "position_hint": "on top of the duty workstation desk, rear edge facing into the room",
            "base_layer_decision": "base_persistent_fixture",
            "render_role": "not_applicable",
            "top_down_legibility": "not_applicable"
          },
          {
            "number": 11,
            "label": "secondary detectives desk cluster",
            "category": "furniture",
            "position_hint": "northwest portion of the shared desk work zone, grouped as two compact desks",
            "base_layer_decision": "base_persistent_furniture",
            "render_role": "not_applicable",
            "top_down_legibility": "not_applicable"
          },
          {
            "number": 12,
            "label": "filing cabinet bank",
            "category": "furniture",
            "position_hint": "along the east wall inside the service storage zone",
            "base_layer_decision": "base_persistent_furniture",
            "render_role": "not_applicable",
            "top_down_legibility": "not_applicable"
          },
          {
            "number": 13,
            "label": "printer copier station",
            "category": "prop",
            "position_hint": "southeast wall near the filing cabinets",
            "base_layer_decision": "base_persistent_fixture",
            "render_role": "not_applicable",
            "top_down_legibility": "not_applicable"
          },
          {
            "number": 14,
            "label": "coffee station",
            "category": "prop",
            "position_hint": "south wall or southeast corner, near the service storage zone and circulation aisle",
            "base_layer_decision": "base_persistent_fixture",
            "render_role": "not_applicable",
            "top_down_legibility": "not_applicable"
          },
          {
            "number": 15,
            "label": "wall notice board",
            "category": "prop",
            "position_hint": "west wall above or beside the investigator desk area",
            "base_layer_decision": "base_persistent_fixture",
            "render_role": "not_applicable",
            "top_down_legibility": "not_applicable"
          },
          {
            "number": 16,
            "label": "guest chair pair",
            "category": "furniture",
            "position_hint": "in front of the investigator desk, facing number 8",
            "base_layer_decision": "base_persistent_furniture",
            "render_role": "not_applicable",
            "top_down_legibility": "not_applicable"
          },
          {
            "number": 17,
            "label": "duty swivel chair",
            "category": "furniture",
            "position_hint": "behind the duty workstation desk at number 9",
            "base_layer_decision": "base_persistent_furniture",
            "render_role": "not_applicable",
            "top_down_legibility": "not_applicable"
          }
        ],
        "transient_markers_to_describe": [
          {
            "number": 19,
            "label": "scattered enlargement case photos",
            "category": "prop",
            "position_hint": "spread across the investigator desk surface at number 8 during the empty daytime office state",
            "base_layer_decision": "state_overlay_transient_object",
            "render_role": "not_applicable",
            "top_down_legibility": "not_applicable"
          },
          {
            "number": 20,
            "label": "GPS location result on monitor",
            "category": "prop",
            "position_hint": "displayed on the desktop monitor at number 10 during the empty daytime office state",
            "base_layer_decision": "state_overlay_plot_cue",
            "render_role": "not_applicable",
            "top_down_legibility": "not_applicable"
          },
          {
            "number": 21,
            "label": "missing report and call request forms",
            "category": "prop",
            "position_hint": "paperwork stack on the duty workstation or investigator desk during the daytime signing and inquiry sequence",
            "base_layer_decision": "state_overlay_transient_object",
            "render_role": "not_applicable",
            "top_down_legibility": "not_applicable"
          }
        ],
        "ignored_state_overlay_markers": [
          {
            "number": 18,
            "label": "smartphone with phone number shown",
            "category": "prop",
            "position_hint": "on or just above the duty workstation side of the desk interaction area, tied to the night inquiry moment",
            "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)"
        ]
      },
      "L18B01": {
        "bg_id": "L18B01",
        "fp_id": "fp_fishing_boat_deck",
        "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": "open deck shared work area",
            "category": "area",
            "position_hint": "central main deck between bow passage and wheelhouse threshold",
            "base_layer_decision": "base_structural_unit",
            "render_role": "not_applicable",
            "top_down_legibility": "not_applicable"
          },
          {
            "number": 2,
            "label": "bow passage",
            "category": "area",
            "position_hint": "north end, narrow path leading toward the bow rail",
            "base_layer_decision": "base_structural_unit",
            "render_role": "not_applicable",
            "top_down_legibility": "not_applicable"
          },
          {
            "number": 3,
            "label": "wheelhouse threshold zone",
            "category": "area",
            "position_hint": "south end of deck directly before the wheelhouse wall and door",
            "base_layer_decision": "base_structural_unit",
            "render_role": "not_applicable",
            "top_down_legibility": "not_applicable"
          },
          {
            "number": 4,
            "label": "perimeter gunwale and safety rail",
            "category": "prop",
            "position_hint": "continuous outline around port, starboard, and bow edges of the open deck",
            "base_layer_decision": "base_persistent_fixture",
            "render_role": "not_applicable",
            "top_down_legibility": "not_applicable"
          },
          {
            "number": 5,
            "label": "portside fixed bench seating",
            "category": "furniture",
            "position_hint": "west side of open deck, slightly aft of center",
            "base_layer_decision": "base_persistent_furniture",
            "render_role": "not_applicable",
            "top_down_legibility": "not_applicable"
          },
          {
            "number": 6,
            "label": "starboard fixed storage bench",
            "category": "furniture",
            "position_hint": "east side of open deck, opposite the seating bench",
            "base_layer_decision": "base_persistent_furniture",
            "render_role": "not_applicable",
            "top_down_legibility": "not_applicable"
          },
          {
            "number": 7,
            "label": "central deck hatch",
            "category": "prop",
            "position_hint": "center of open deck, between seating and wheelhouse route",
            "base_layer_decision": "base_persistent_fixture",
            "render_role": "not_applicable",
            "top_down_legibility": "not_applicable"
          },
          {
            "number": 8,
            "label": "wheelhouse deck door",
            "category": "opening",
            "position_hint": "south wall of deck, centered slightly to starboard, opening into wheelhouse",
            "base_layer_decision": "base_opening",
            "render_role": "not_applicable",
            "top_down_legibility": "not_applicable"
          },
          {
            "number": 9,
            "label": "wheelhouse front window",
            "category": "opening",
            "position_hint": "south wall above the deck threshold, adjacent to the wheelhouse door",
            "base_layer_decision": "base_opening",
            "render_role": "not_applicable",
            "top_down_legibility": "not_applicable"
          },
          {
            "number": 10,
            "label": "bow mooring cleat",
            "category": "prop",
            "position_hint": "north bow passage, centered near the bow rail",
            "base_layer_decision": "base_persistent_fixture",
            "render_role": "not_applicable",
            "top_down_legibility": "not_applicable"
          },
          {
            "number": 11,
            "label": "starboard side rail gate",
            "category": "opening",
            "position_hint": "east rail near aft open deck, small gap in safety rail",
            "base_layer_decision": "base_opening",
            "render_role": "not_applicable",
            "top_down_legibility": "not_applicable"
          }
        ],
        "transient_markers_to_describe": [
          {
            "number": 12,
            "label": "paper map used in confrontation",
            "category": "prop",
            "position_hint": "near portside fixed bench seating, held or presented during the deck exchange",
            "base_layer_decision": "state_overlay_transient_object",
            "render_role": "not_applicable",
            "top_down_legibility": "not_applicable"
          },
          {
            "number": 13,
            "label": "printed photograph used in confrontation",
            "category": "prop",
            "position_hint": "near portside fixed bench seating, shown together with the paper map",
            "base_layer_decision": "state_overlay_transient_object",
            "render_role": "not_applicable",
            "top_down_legibility": "not_applicable"
          },
          {
            "number": 14,
            "label": "sudden movement route toward wheelhouse",
            "category": "area",
            "position_hint": "from the seating area across the central deck toward the wheelhouse deck door",
            "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)"
        ]
      },
      "L19B01": {
        "bg_id": "L19B01",
        "fp_id": "fp_fishing_boat_wheelhouse",
        "use_numbered_elements": [
          1,
          2,
          3,
          4,
          5,
          6,
          7,
          8,
          9,
          10,
          11,
          12
        ],
        "ignore_numbered_elements": [
          13,
          14,
          15
        ],
        "base_markers_to_reference": [
          {
            "number": 1,
            "label": "compact wheelhouse interior",
            "category": "area",
            "position_hint": "main enclosed cabin footprint, centered inside the boat wheelhouse",
            "base_layer_decision": "base_structural_unit",
            "render_role": "not_applicable",
            "top_down_legibility": "not_applicable"
          },
          {
            "number": 2,
            "label": "aft entrance doorway",
            "category": "opening",
            "position_hint": "south wall, centered-to-starboard side, opening from rear deck into wheelhouse",
            "base_layer_decision": "base_opening",
            "render_role": "not_applicable",
            "top_down_legibility": "not_applicable"
          },
          {
            "number": 3,
            "label": "forward windshield bank",
            "category": "opening",
            "position_hint": "north wall, wide window band above the helm",
            "base_layer_decision": "base_opening",
            "render_role": "not_applicable",
            "top_down_legibility": "not_applicable"
          },
          {
            "number": 4,
            "label": "port side sliding window",
            "category": "opening",
            "position_hint": "west wall, forward half of wheelhouse",
            "base_layer_decision": "base_opening",
            "render_role": "not_applicable",
            "top_down_legibility": "not_applicable"
          },
          {
            "number": 5,
            "label": "starboard side sliding window",
            "category": "opening",
            "position_hint": "east wall, forward half of wheelhouse near helm",
            "base_layer_decision": "base_opening",
            "render_role": "not_applicable",
            "top_down_legibility": "not_applicable"
          },
          {
            "number": 6,
            "label": "helm console with steering wheel",
            "category": "furniture",
            "position_hint": "forward starboard corner, directly below forward windshield",
            "base_layer_decision": "base_persistent_fixture",
            "render_role": "not_applicable",
            "top_down_legibility": "not_applicable"
          },
          {
            "number": 7,
            "label": "throttle and instrument panel",
            "category": "prop",
            "position_hint": "mounted on top of helm console, forward starboard area",
            "base_layer_decision": "base_persistent_fixture",
            "render_role": "not_applicable",
            "top_down_legibility": "not_applicable"
          },
          {
            "number": 8,
            "label": "fixed radio and GPS unit",
            "category": "prop",
            "position_hint": "forward wall or upper helm area, near the windshield and console",
            "base_layer_decision": "base_persistent_fixture",
            "render_role": "not_applicable",
            "top_down_legibility": "not_applicable"
          },
          {
            "number": 9,
            "label": "small chart shelf",
            "category": "furniture",
            "position_hint": "port-forward wall area opposite the helm",
            "base_layer_decision": "base_persistent_furniture",
            "render_role": "not_applicable",
            "top_down_legibility": "not_applicable"
          },
          {
            "number": 10,
            "label": "low storage bench",
            "category": "furniture",
            "position_hint": "port aft wall, below side window line",
            "base_layer_decision": "base_persistent_furniture",
            "render_role": "not_applicable",
            "top_down_legibility": "not_applicable"
          },
          {
            "number": 11,
            "label": "narrow central standing aisle",
            "category": "area",
            "position_hint": "thin open floor strip running from aft entrance toward helm, used as cramped blocking space",
            "base_layer_decision": "base_structural_unit",
            "render_role": "not_applicable",
            "top_down_legibility": "not_applicable"
          }
        ],
        "transient_markers_to_describe": [
          {
            "number": 12,
            "label": "old photo clue",
            "category": "prop",
            "position_hint": "temporary handheld clue in the narrow aisle near the helm confrontation",
            "base_layer_decision": "state_overlay_transient_object",
            "render_role": "not_applicable",
            "top_down_legibility": "not_applicable"
          }
        ],
        "ignored_state_overlay_markers": [
          {
            "number": 13,
            "label": "many circular marks",
            "category": "prop",
            "position_hint": "transient or subjective circular marks across interior walls and window surfaces",
            "base_layer_decision": "state_overlay_plot_cue",
            "render_role": "not_applicable",
            "top_down_legibility": "not_applicable"
          },
          {
            "number": 14,
            "label": "new red circle mark",
            "category": "prop",
            "position_hint": "newly discovered red circle near the forward windshield and helm sightline",
            "base_layer_decision": "state_overlay_plot_cue",
            "render_role": "not_applicable",
            "top_down_legibility": "not_applicable"
          },
          {
            "number": 15,
            "label": "collapsed figure position",
            "category": "prop",
            "position_hint": "temporary collapsed position in the narrow aisle beside the helm",
            "base_layer_decision": "state_overlay_transient_object",
            "render_role": "not_applicable",
            "top_down_legibility": "not_applicable"
          }
        ],
        "target_unit_marker_numbers": [
          1,
          11
        ],
        "dominant_target_unit_marker_number": null,
        "clean_background_expected": false,
        "diagnostics": [
          "multiple base_structural_unit markers in use_numbered_elements ([1, 11]); dominant_target_unit_marker_number left empty (W19B-1 lock — no lexical disambiguation)"
        ]
      },
      "L19B02": {
        "bg_id": "L19B02",
        "fp_id": "fp_fishing_boat_wheelhouse",
        "use_numbered_elements": [
          1,
          2,
          3,
          4,
          5,
          6,
          7,
          8,
          9,
          10,
          11,
          13,
          14,
          15
        ],
        "ignore_numbered_elements": [
          12
        ],
        "base_markers_to_reference": [
          {
            "number": 1,
            "label": "compact wheelhouse interior",
            "category": "area",
            "position_hint": "main enclosed cabin footprint, centered inside the boat wheelhouse",
            "base_layer_decision": "base_structural_unit",
            "render_role": "not_applicable",
            "top_down_legibility": "not_applicable"
          },
          {
            "number": 2,
            "label": "aft entrance doorway",
            "category": "opening",
            "position_hint": "south wall, centered-to-starboard side, opening from rear deck into wheelhouse",
            "base_layer_decision": "base_opening",
            "render_role": "not_applicable",
            "top_down_legibility": "not_applicable"
          },
          {
            "number": 3,
            "label": "forward windshield bank",
            "category": "opening",
            "position_hint": "north wall, wide window band above the helm",
            "base_layer_decision": "base_opening",
            "render_role": "not_applicable",
            "top_down_legibility": "not_applicable"
          },
          {
            "number": 4,
            "label": "port side sliding window",
            "category": "opening",
            "position_hint": "west wall, forward half of wheelhouse",
            "base_layer_decision": "base_opening",
            "render_role": "not_applicable",
            "top_down_legibility": "not_applicable"
          },
          {
            "number": 5,
            "label": "starboard side sliding window",
            "category": "opening",
            "position_hint": "east wall, forward half of wheelhouse near helm",
            "base_layer_decision": "base_opening",
            "render_role": "not_applicable",
            "top_down_legibility": "not_applicable"
          },
          {
            "number": 6,
            "label": "helm console with steering wheel",
            "category": "furniture",
            "position_hint": "forward starboard corner, directly below forward windshield",
            "base_layer_decision": "base_persistent_fixture",
            "render_role": "not_applicable",
            "top_down_legibility": "not_applicable"
          },
          {
            "number": 7,
            "label": "throttle and instrument panel",
            "category": "prop",
            "position_hint": "mounted on top of helm console, forward starboard area",
            "base_layer_decision": "base_persistent_fixture",
            "render_role": "not_applicable",
            "top_down_legibility": "not_applicable"
          },
          {
            "number": 8,
            "label": "fixed radio and GPS unit",
            "category": "prop",
            "position_hint": "forward wall or upper helm area, near the windshield and console",
            "base_layer_decision": "base_persistent_fixture",
            "render_role": "not_applicable",
            "top_down_legibility": "not_applicable"
          },
          {
            "number": 9,
            "label": "small chart shelf",
            "category": "furniture",
            "position_hint": "port-forward wall area opposite the helm",
            "base_layer_decision": "base_persistent_furniture",
            "render_role": "not_applicable",
            "top_down_legibility": "not_applicable"
          },
          {
            "number": 10,
            "label": "low storage bench",
            "category": "furniture",
            "position_hint": "port aft wall, below side window line",
            "base_layer_decision": "base_persistent_furniture",
            "render_role": "not_applicable",
            "top_down_legibility": "not_applicable"
          },
          {
            "number": 11,
            "label": "narrow central standing aisle",
            "category": "area",
            "position_hint": "thin open floor strip running from aft entrance toward helm, used as cramped blocking space",
            "base_layer_decision": "base_structural_unit",
            "render_role": "not_applicable",
            "top_down_legibility": "not_applicable"
          }
        ],
        "transient_markers_to_describe": [
          {
            "number": 13,
            "label": "many circular marks",
            "category": "prop",
            "position_hint": "transient or subjective circular marks across interior walls and window surfaces",
            "base_layer_decision": "state_overlay_plot_cue",
            "render_role": "not_applicable",
            "top_down_legibility": "not_applicable"
          },
          {
            "number": 14,
            "label": "new red circle mark",
            "category": "prop",
            "position_hint": "newly discovered red circle near the forward windshield and helm sightline",
            "base_layer_decision": "state_overlay_plot_cue",
            "render_role": "not_applicable",
            "top_down_legibility": "not_applicable"
          },
          {
            "number": 15,
            "label": "collapsed figure position",
            "category": "prop",
            "position_hint": "temporary collapsed position in the narrow aisle beside the helm",
            "base_layer_decision": "state_overlay_transient_object",
            "render_role": "not_applicable",
            "top_down_legibility": "not_applicable"
          }
        ],
        "ignored_state_overlay_markers": [
          {
            "number": 12,
            "label": "old photo clue",
            "category": "prop",
            "position_hint": "temporary handheld clue in the narrow aisle near the helm confrontation",
            "base_layer_decision": "state_overlay_transient_object",
            "render_role": "not_applicable",
            "top_down_legibility": "not_applicable"
          }
        ],
        "target_unit_marker_numbers": [
          1,
          11
        ],
        "dominant_target_unit_marker_number": null,
        "clean_background_expected": false,
        "diagnostics": [
          "multiple base_structural_unit markers in use_numbered_elements ([1, 11]); dominant_target_unit_marker_number left empty (W19B-1 lock — no lexical disambiguation)"
        ]
      }
    }
  },
  "step_id": "floor_plan_overlay_payload",
  "run_id": "3d2e0c17-93fc-4d40-b1ff-fc10ff8d2625",
  "resolved_model": "gpt",
  "updated_at": "2026-06-17T08:00:01.753911+00:00",
  "project_config_snapshot": {}
}