{
  "status": "completed",
  "applicable_count": 1,
  "completed_count": 1,
  "failed_count": 0,
  "schema_version": 1,
  "config_hash": "87859d7fae867cc1",
  "data": {
    "overlays": {
      "L03B02": {
        "bg_id": "L03B02",
        "fp_id": "fp_l03_rooftop_exterior",
        "use_numbered_elements": [
          1,
          2,
          3,
          4,
          5,
          6,
          7,
          8,
          9,
          10
        ],
        "ignore_numbered_elements": [
          11,
          12,
          13,
          14,
          15,
          16
        ],
        "base_markers_to_reference": [
          {
            "number": 1,
            "label": "open rooftop terrace zone",
            "category": "area",
            "position_hint": "central and southern majority of the roof slab, surrounding the rooftop room facade",
            "base_layer_decision": "base_structural_unit",
            "render_role": "not_applicable",
            "top_down_legibility": "not_applicable"
          },
          {
            "number": 2,
            "label": "rooftop room footprint",
            "category": "area",
            "position_hint": "north side of the roof slab, rectangular private interior mass with facade facing south",
            "base_layer_decision": "base_structural_unit",
            "render_role": "not_applicable",
            "top_down_legibility": "not_applicable"
          },
          {
            "number": 3,
            "label": "threshold stair landing zone",
            "category": "area",
            "position_hint": "southwest corner of the rooftop, connected to the exterior stair access and path toward the entry door",
            "base_layer_decision": "base_structural_unit",
            "render_role": "not_applicable",
            "top_down_legibility": "not_applicable"
          },
          {
            "number": 4,
            "label": "service utility zone",
            "category": "area",
            "position_hint": "northeast corner of the rooftop terrace, containing water tank and laundry fixtures",
            "base_layer_decision": "base_structural_unit",
            "render_role": "not_applicable",
            "top_down_legibility": "not_applicable"
          },
          {
            "number": 5,
            "label": "iron entry door",
            "category": "opening",
            "position_hint": "south facade of the rooftop room, slightly west of center, opening from terrace into the room",
            "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 facade of the rooftop room, east of the iron entry door",
            "base_layer_decision": "base_opening",
            "render_role": "not_applicable",
            "top_down_legibility": "not_applicable"
          },
          {
            "number": 7,
            "label": "rooftop water tank",
            "category": "prop",
            "position_hint": "inside the northeast service utility zone near the parapet corner",
            "base_layer_decision": "base_persistent_fixture",
            "render_role": "not_applicable",
            "top_down_legibility": "not_applicable"
          },
          {
            "number": 8,
            "label": "clothesline",
            "category": "prop",
            "position_hint": "spanning east-west across the open rooftop terrace between utility posts",
            "base_layer_decision": "base_persistent_fixture",
            "render_role": "not_applicable",
            "top_down_legibility": "not_applicable"
          },
          {
            "number": 9,
            "label": "low drying platform",
            "category": "furniture",
            "position_hint": "open rooftop terrace near the clothesline, southeast of the water tank and offset from the main walking path",
            "base_layer_decision": "base_persistent_furniture",
            "render_role": "not_applicable",
            "top_down_legibility": "not_applicable"
          },
          {
            "number": 10,
            "label": "perimeter parapet wall",
            "category": "area",
            "position_hint": "continuous low wall around the outer edge of the rooftop slab",
            "base_layer_decision": "base_structural_unit",
            "render_role": "not_applicable",
            "top_down_legibility": "not_applicable"
          }
        ],
        "transient_markers_to_describe": [],
        "ignored_state_overlay_markers": [
          {
            "number": 11,
            "label": "advertising flyer wedged at door gap",
            "category": "prop",
            "position_hint": "at number 5, in the narrow gap of the iron entry door",
            "base_layer_decision": "state_overlay_transient_object",
            "render_role": "not_applicable",
            "top_down_legibility": "not_applicable"
          },
          {
            "number": 12,
            "label": "ominous silhouette in window",
            "category": "prop",
            "position_hint": "at number 6, visible through the small facade window during the intrusion moment",
            "base_layer_decision": "state_overlay_plot_cue",
            "render_role": "not_applicable",
            "top_down_legibility": "not_applicable"
          },
          {
            "number": 13,
            "label": "slightly opened door state",
            "category": "opening",
            "position_hint": "at number 5, the iron entry door left marginally open after tampering",
            "base_layer_decision": "state_overlay_plot_cue",
            "render_role": "not_applicable",
            "top_down_legibility": "not_applicable"
          },
          {
            "number": 14,
            "label": "black cat on parapet",
            "category": "prop",
            "position_hint": "on number 10, along the outer parapet near the small facade window sightline",
            "base_layer_decision": "state_overlay_transient_object",
            "render_role": "not_applicable",
            "top_down_legibility": "not_applicable"
          },
          {
            "number": 15,
            "label": "lit window state",
            "category": "opening",
            "position_hint": "at number 6, window illuminated for the blue dawn exterior moment",
            "base_layer_decision": "state_overlay_plot_cue",
            "render_role": "not_applicable",
            "top_down_legibility": "not_applicable"
          },
          {
            "number": 16,
            "label": "loose dried herb leaves",
            "category": "prop",
            "position_hint": "around number 9 and along the walking path toward number 5, blown from the drying platform area",
            "base_layer_decision": "state_overlay_transient_object",
            "render_role": "not_applicable",
            "top_down_legibility": "not_applicable"
          }
        ],
        "target_unit_marker_numbers": [
          1,
          2,
          3,
          4,
          10
        ],
        "dominant_target_unit_marker_number": null,
        "clean_background_expected": true,
        "diagnostics": [
          "multiple base_structural_unit markers in use_numbered_elements ([1, 2, 3, 4, 10]); dominant_target_unit_marker_number left empty (W19B-1 lock — no lexical disambiguation)"
        ]
      },
      "L03B03": {
        "bg_id": "L03B03",
        "fp_id": "fp_l03_rooftop_exterior",
        "use_numbered_elements": [
          1,
          2,
          3,
          4,
          5,
          6,
          7,
          8,
          9,
          10,
          11,
          12,
          13,
          16
        ],
        "ignore_numbered_elements": [
          14,
          15
        ],
        "base_markers_to_reference": [
          {
            "number": 1,
            "label": "open rooftop terrace zone",
            "category": "area",
            "position_hint": "central and southern majority of the roof slab, surrounding the rooftop room facade",
            "base_layer_decision": "base_structural_unit",
            "render_role": "not_applicable",
            "top_down_legibility": "not_applicable"
          },
          {
            "number": 2,
            "label": "rooftop room footprint",
            "category": "area",
            "position_hint": "north side of the roof slab, rectangular private interior mass with facade facing south",
            "base_layer_decision": "base_structural_unit",
            "render_role": "not_applicable",
            "top_down_legibility": "not_applicable"
          },
          {
            "number": 3,
            "label": "threshold stair landing zone",
            "category": "area",
            "position_hint": "southwest corner of the rooftop, connected to the exterior stair access and path toward the entry door",
            "base_layer_decision": "base_structural_unit",
            "render_role": "not_applicable",
            "top_down_legibility": "not_applicable"
          },
          {
            "number": 4,
            "label": "service utility zone",
            "category": "area",
            "position_hint": "northeast corner of the rooftop terrace, containing water tank and laundry fixtures",
            "base_layer_decision": "base_structural_unit",
            "render_role": "not_applicable",
            "top_down_legibility": "not_applicable"
          },
          {
            "number": 5,
            "label": "iron entry door",
            "category": "opening",
            "position_hint": "south facade of the rooftop room, slightly west of center, opening from terrace into the room",
            "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 facade of the rooftop room, east of the iron entry door",
            "base_layer_decision": "base_opening",
            "render_role": "not_applicable",
            "top_down_legibility": "not_applicable"
          },
          {
            "number": 7,
            "label": "rooftop water tank",
            "category": "prop",
            "position_hint": "inside the northeast service utility zone near the parapet corner",
            "base_layer_decision": "base_persistent_fixture",
            "render_role": "not_applicable",
            "top_down_legibility": "not_applicable"
          },
          {
            "number": 8,
            "label": "clothesline",
            "category": "prop",
            "position_hint": "spanning east-west across the open rooftop terrace between utility posts",
            "base_layer_decision": "base_persistent_fixture",
            "render_role": "not_applicable",
            "top_down_legibility": "not_applicable"
          },
          {
            "number": 9,
            "label": "low drying platform",
            "category": "furniture",
            "position_hint": "open rooftop terrace near the clothesline, southeast of the water tank and offset from the main walking path",
            "base_layer_decision": "base_persistent_furniture",
            "render_role": "not_applicable",
            "top_down_legibility": "not_applicable"
          },
          {
            "number": 10,
            "label": "perimeter parapet wall",
            "category": "area",
            "position_hint": "continuous low wall around the outer edge of the rooftop slab",
            "base_layer_decision": "base_structural_unit",
            "render_role": "not_applicable",
            "top_down_legibility": "not_applicable"
          }
        ],
        "transient_markers_to_describe": [
          {
            "number": 11,
            "label": "advertising flyer wedged at door gap",
            "category": "prop",
            "position_hint": "at number 5, in the narrow gap of the iron entry door",
            "base_layer_decision": "state_overlay_transient_object",
            "render_role": "not_applicable",
            "top_down_legibility": "not_applicable"
          },
          {
            "number": 12,
            "label": "ominous silhouette in window",
            "category": "prop",
            "position_hint": "at number 6, visible through the small facade window during the intrusion moment",
            "base_layer_decision": "state_overlay_plot_cue",
            "render_role": "not_applicable",
            "top_down_legibility": "not_applicable"
          },
          {
            "number": 13,
            "label": "slightly opened door state",
            "category": "opening",
            "position_hint": "at number 5, the iron entry door left marginally open after tampering",
            "base_layer_decision": "state_overlay_plot_cue",
            "render_role": "not_applicable",
            "top_down_legibility": "not_applicable"
          },
          {
            "number": 16,
            "label": "loose dried herb leaves",
            "category": "prop",
            "position_hint": "around number 9 and along the walking path toward number 5, blown from the drying platform area",
            "base_layer_decision": "state_overlay_transient_object",
            "render_role": "not_applicable",
            "top_down_legibility": "not_applicable"
          }
        ],
        "ignored_state_overlay_markers": [
          {
            "number": 14,
            "label": "black cat on parapet",
            "category": "prop",
            "position_hint": "on number 10, along the outer parapet near the small facade window sightline",
            "base_layer_decision": "state_overlay_transient_object",
            "render_role": "not_applicable",
            "top_down_legibility": "not_applicable"
          },
          {
            "number": 15,
            "label": "lit window state",
            "category": "opening",
            "position_hint": "at number 6, window illuminated for the blue dawn exterior moment",
            "base_layer_decision": "state_overlay_plot_cue",
            "render_role": "not_applicable",
            "top_down_legibility": "not_applicable"
          }
        ],
        "target_unit_marker_numbers": [
          1,
          2,
          3,
          4,
          10
        ],
        "dominant_target_unit_marker_number": null,
        "clean_background_expected": false,
        "diagnostics": [
          "multiple base_structural_unit markers in use_numbered_elements ([1, 2, 3, 4, 10]); dominant_target_unit_marker_number left empty (W19B-1 lock — no lexical disambiguation)"
        ]
      },
      "L03B01": {
        "bg_id": "L03B01",
        "fp_id": "fp_l03_rooftop_exterior",
        "use_numbered_elements": [
          1,
          2,
          3,
          4,
          5,
          6,
          7,
          8,
          9,
          10,
          14,
          15
        ],
        "ignore_numbered_elements": [
          11,
          12,
          13,
          16
        ],
        "base_markers_to_reference": [
          {
            "number": 1,
            "label": "open rooftop terrace zone",
            "category": "area",
            "position_hint": "central and southern majority of the roof slab, surrounding the rooftop room facade",
            "base_layer_decision": "base_structural_unit",
            "render_role": "not_applicable",
            "top_down_legibility": "not_applicable"
          },
          {
            "number": 2,
            "label": "rooftop room footprint",
            "category": "area",
            "position_hint": "north side of the roof slab, rectangular private interior mass with facade facing south",
            "base_layer_decision": "base_structural_unit",
            "render_role": "not_applicable",
            "top_down_legibility": "not_applicable"
          },
          {
            "number": 3,
            "label": "threshold stair landing zone",
            "category": "area",
            "position_hint": "southwest corner of the rooftop, connected to the exterior stair access and path toward the entry door",
            "base_layer_decision": "base_structural_unit",
            "render_role": "not_applicable",
            "top_down_legibility": "not_applicable"
          },
          {
            "number": 4,
            "label": "service utility zone",
            "category": "area",
            "position_hint": "northeast corner of the rooftop terrace, containing water tank and laundry fixtures",
            "base_layer_decision": "base_structural_unit",
            "render_role": "not_applicable",
            "top_down_legibility": "not_applicable"
          },
          {
            "number": 5,
            "label": "iron entry door",
            "category": "opening",
            "position_hint": "south facade of the rooftop room, slightly west of center, opening from terrace into the room",
            "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 facade of the rooftop room, east of the iron entry door",
            "base_layer_decision": "base_opening",
            "render_role": "not_applicable",
            "top_down_legibility": "not_applicable"
          },
          {
            "number": 7,
            "label": "rooftop water tank",
            "category": "prop",
            "position_hint": "inside the northeast service utility zone near the parapet corner",
            "base_layer_decision": "base_persistent_fixture",
            "render_role": "not_applicable",
            "top_down_legibility": "not_applicable"
          },
          {
            "number": 8,
            "label": "clothesline",
            "category": "prop",
            "position_hint": "spanning east-west across the open rooftop terrace between utility posts",
            "base_layer_decision": "base_persistent_fixture",
            "render_role": "not_applicable",
            "top_down_legibility": "not_applicable"
          },
          {
            "number": 9,
            "label": "low drying platform",
            "category": "furniture",
            "position_hint": "open rooftop terrace near the clothesline, southeast of the water tank and offset from the main walking path",
            "base_layer_decision": "base_persistent_furniture",
            "render_role": "not_applicable",
            "top_down_legibility": "not_applicable"
          },
          {
            "number": 10,
            "label": "perimeter parapet wall",
            "category": "area",
            "position_hint": "continuous low wall around the outer edge of the rooftop slab",
            "base_layer_decision": "base_structural_unit",
            "render_role": "not_applicable",
            "top_down_legibility": "not_applicable"
          }
        ],
        "transient_markers_to_describe": [
          {
            "number": 14,
            "label": "black cat on parapet",
            "category": "prop",
            "position_hint": "on number 10, along the outer parapet near the small facade window sightline",
            "base_layer_decision": "state_overlay_transient_object",
            "render_role": "not_applicable",
            "top_down_legibility": "not_applicable"
          },
          {
            "number": 15,
            "label": "lit window state",
            "category": "opening",
            "position_hint": "at number 6, window illuminated for the blue dawn exterior moment",
            "base_layer_decision": "state_overlay_plot_cue",
            "render_role": "not_applicable",
            "top_down_legibility": "not_applicable"
          }
        ],
        "ignored_state_overlay_markers": [
          {
            "number": 11,
            "label": "advertising flyer wedged at door gap",
            "category": "prop",
            "position_hint": "at number 5, in the narrow gap of the iron entry door",
            "base_layer_decision": "state_overlay_transient_object",
            "render_role": "not_applicable",
            "top_down_legibility": "not_applicable"
          },
          {
            "number": 12,
            "label": "ominous silhouette in window",
            "category": "prop",
            "position_hint": "at number 6, visible through the small facade window during the intrusion moment",
            "base_layer_decision": "state_overlay_plot_cue",
            "render_role": "not_applicable",
            "top_down_legibility": "not_applicable"
          },
          {
            "number": 13,
            "label": "slightly opened door state",
            "category": "opening",
            "position_hint": "at number 5, the iron entry door left marginally open after tampering",
            "base_layer_decision": "state_overlay_plot_cue",
            "render_role": "not_applicable",
            "top_down_legibility": "not_applicable"
          },
          {
            "number": 16,
            "label": "loose dried herb leaves",
            "category": "prop",
            "position_hint": "around number 9 and along the walking path toward number 5, blown from the drying platform area",
            "base_layer_decision": "state_overlay_transient_object",
            "render_role": "not_applicable",
            "top_down_legibility": "not_applicable"
          }
        ],
        "target_unit_marker_numbers": [
          1,
          2,
          3,
          4,
          10
        ],
        "dominant_target_unit_marker_number": null,
        "clean_background_expected": false,
        "diagnostics": [
          "multiple base_structural_unit markers in use_numbered_elements ([1, 2, 3, 4, 10]); dominant_target_unit_marker_number left empty (W19B-1 lock — no lexical disambiguation)"
        ]
      },
      "L04B01": {
        "bg_id": "L04B01",
        "fp_id": "fp_l04_interior_main",
        "use_numbered_elements": [
          1,
          2,
          3,
          7,
          8,
          10,
          14,
          15,
          16,
          17,
          18,
          19,
          28,
          29,
          30
        ],
        "ignore_numbered_elements": [
          31,
          32,
          33,
          34,
          35,
          36,
          37,
          38,
          39,
          40,
          41,
          42,
          43,
          44
        ],
        "base_markers_to_reference": [
          {
            "number": 1,
            "label": "entrance threshold zone",
            "category": "area",
            "position_hint": "southwest edge of the unit, immediately inside the metal entrance door",
            "base_layer_decision": "base_structural_unit",
            "render_role": "not_applicable",
            "top_down_legibility": "not_applicable"
          },
          {
            "number": 2,
            "label": "shared living dining zone",
            "category": "area",
            "position_hint": "central main room, connecting entry, kitchenette, bedrooms, and bathroom",
            "base_layer_decision": "base_structural_unit",
            "render_role": "not_applicable",
            "top_down_legibility": "not_applicable"
          },
          {
            "number": 3,
            "label": "kitchenette service strip",
            "category": "area",
            "position_hint": "west side of the shared zone along the plumbing wall",
            "base_layer_decision": "base_structural_unit",
            "render_role": "not_applicable",
            "top_down_legibility": "not_applicable"
          },
          {
            "number": 7,
            "label": "metal entrance door",
            "category": "opening",
            "position_hint": "south wall at the threshold, hinged door swinging inward from rooftop landing",
            "base_layer_decision": "base_opening",
            "render_role": "not_applicable",
            "top_down_legibility": "not_applicable"
          },
          {
            "number": 8,
            "label": "living area small sliding window",
            "category": "opening",
            "position_hint": "north or northwest wall of the shared living dining zone",
            "base_layer_decision": "base_opening",
            "render_role": "not_applicable",
            "top_down_legibility": "not_applicable"
          },
          {
            "number": 10,
            "label": "young bedroom door",
            "category": "opening",
            "position_hint": "east side of the shared zone opening into the young adult bedroom",
            "base_layer_decision": "base_opening",
            "render_role": "not_applicable",
            "top_down_legibility": "not_applicable"
          },
          {
            "number": 14,
            "label": "compact sink counter with faucet",
            "category": "prop",
            "position_hint": "west wall of the kitchenette service strip",
            "base_layer_decision": "base_persistent_fixture",
            "render_role": "not_applicable",
            "top_down_legibility": "not_applicable"
          },
          {
            "number": 15,
            "label": "compact cooktop and pot station",
            "category": "prop",
            "position_hint": "beside the sink counter along the kitchenette service strip",
            "base_layer_decision": "base_persistent_fixture",
            "render_role": "not_applicable",
            "top_down_legibility": "not_applicable"
          },
          {
            "number": 16,
            "label": "small dining table",
            "category": "furniture",
            "position_hint": "center-left of the shared living dining zone near the kitchenette",
            "base_layer_decision": "base_persistent_furniture",
            "render_role": "not_applicable",
            "top_down_legibility": "not_applicable"
          },
          {
            "number": 17,
            "label": "dining chair set",
            "category": "furniture",
            "position_hint": "clustered around the small dining table in the shared zone",
            "base_layer_decision": "base_persistent_furniture",
            "render_role": "not_applicable",
            "top_down_legibility": "not_applicable"
          },
          {
            "number": 18,
            "label": "television on low stand",
            "category": "furniture",
            "position_hint": "east or southeast wall of the shared living dining zone facing the table",
            "base_layer_decision": "base_persistent_furniture",
            "render_role": "not_applicable",
            "top_down_legibility": "not_applicable"
          },
          {
            "number": 19,
            "label": "floor lamp",
            "category": "furniture",
            "position_hint": "corner of the shared living dining zone near the television wall",
            "base_layer_decision": "base_persistent_furniture",
            "render_role": "not_applicable",
            "top_down_legibility": "not_applicable"
          },
          {
            "number": 28,
            "label": "family photo frame on dining table",
            "category": "prop",
            "position_hint": "on top of the small dining table in the shared living dining zone",
            "base_layer_decision": "base_persistent_furniture",
            "render_role": "not_applicable",
            "top_down_legibility": "not_applicable"
          }
        ],
        "transient_markers_to_describe": [
          {
            "number": 29,
            "label": "small circular wrist mark",
            "category": "prop",
            "position_hint": "on a resident or victim wrist when the person is present near the living table or young bedroom",
            "base_layer_decision": "state_overlay_plot_cue",
            "render_role": "not_applicable",
            "top_down_legibility": "not_applicable"
          },
          {
            "number": 30,
            "label": "active television news glow",
            "category": "prop",
            "position_hint": "emanating from the television at number 18 during the news-viewing state",
            "base_layer_decision": "state_overlay_plot_cue",
            "render_role": "not_applicable",
            "top_down_legibility": "not_applicable"
          }
        ],
        "ignored_state_overlay_markers": [
          {
            "number": 31,
            "label": "two tea cups with one overturned",
            "category": "prop",
            "position_hint": "on or near the dining table at number 16 during the disturbed night state",
            "base_layer_decision": "state_overlay_transient_object",
            "render_role": "not_applicable",
            "top_down_legibility": "not_applicable"
          },
          {
            "number": 32,
            "label": "blood pool and footprints in young bedroom",
            "category": "prop",
            "position_hint": "on the floor of number 5, leading from the room center toward number 24",
            "base_layer_decision": "state_overlay_plot_cue",
            "render_role": "not_applicable",
            "top_down_legibility": "not_applicable"
          },
          {
            "number": 33,
            "label": "body hidden behind curtain",
            "category": "prop",
            "position_hint": "behind number 24 in the young adult bedroom",
            "base_layer_decision": "state_overlay_transient_object",
            "render_role": "not_applicable",
            "top_down_legibility": "not_applicable"
          },
          {
            "number": 34,
            "label": "crumpled clue photo in victim hand",
            "category": "prop",
            "position_hint": "with the body behind number 24 during the murder-scene state",
            "base_layer_decision": "state_overlay_transient_object",
            "render_role": "not_applicable",
            "top_down_legibility": "not_applicable"
          },
          {
            "number": 35,
            "label": "red circle appearing on wall above young bed",
            "category": "prop",
            "position_hint": "on the wall above or beside number 22 in the young adult bedroom",
            "base_layer_decision": "state_overlay_plot_cue",
            "render_role": "not_applicable",
            "top_down_legibility": "not_applicable"
          },
          {
            "number": 36,
            "label": "over-clean vanished-body state",
            "category": "prop",
            "position_hint": "throughout number 5 and around number 16 where prior traces are absent",
            "base_layer_decision": "state_overlay_plot_cue",
            "render_role": "not_applicable",
            "top_down_legibility": "not_applicable"
          },
          {
            "number": 37,
            "label": "subtly shifted backpack and doll",
            "category": "prop",
            "position_hint": "inside number 5 near number 23, slightly displaced from the earlier arrangement",
            "base_layer_decision": "state_overlay_transient_object",
            "render_role": "not_applicable",
            "top_down_legibility": "not_applicable"
          },
          {
            "number": 38,
            "label": "hallucinated red circle in bathroom mirror",
            "category": "prop",
            "position_hint": "inside number 27 as a reflected or subjective visual cue",
            "base_layer_decision": "state_overlay_plot_cue",
            "render_role": "not_applicable",
            "top_down_legibility": "not_applicable"
          },
          {
            "number": 39,
            "label": "distorted face in family photo frame",
            "category": "prop",
            "position_hint": "within the image surface of number 28 on the dining table",
            "base_layer_decision": "state_overlay_plot_cue",
            "render_role": "not_applicable",
            "top_down_legibility": "not_applicable"
          },
          {
            "number": 40,
            "label": "red circle with bloodied clue photo pinned at center",
            "category": "prop",
            "position_hint": "on the young bedroom wall visible from number 10, near number 22",
            "base_layer_decision": "state_overlay_plot_cue",
            "render_role": "not_applicable",
            "top_down_legibility": "not_applicable"
          },
          {
            "number": 41,
            "label": "ransacked scattered belongings and overturned chairs",
            "category": "prop",
            "position_hint": "across number 2 and around numbers 16 and 17",
            "base_layer_decision": "state_overlay_transient_object",
            "render_role": "not_applicable",
            "top_down_legibility": "not_applicable"
          },
          {
            "number": 42,
            "label": "living window forced open state",
            "category": "opening",
            "position_hint": "at number 8 during the ransacked-room state",
            "base_layer_decision": "state_overlay_transient_object",
            "render_role": "not_applicable",
            "top_down_legibility": "not_applicable"
          },
          {
            "number": 43,
            "label": "half-open entrance door wind-rattle state",
            "category": "opening",
            "position_hint": "at number 7 during the bleak abandoned-room state",
            "base_layer_decision": "state_overlay_transient_object",
            "render_role": "not_applicable",
            "top_down_legibility": "not_applicable"
          },
          {
            "number": 44,
            "label": "intruder footprints through living area",
            "category": "prop",
            "position_hint": "across number 1 and number 2, crossing toward the window and bedroom door",
            "base_layer_decision": "state_overlay_plot_cue",
            "render_role": "not_applicable",
            "top_down_legibility": "not_applicable"
          }
        ],
        "target_unit_marker_numbers": [
          1,
          2,
          3
        ],
        "dominant_target_unit_marker_number": null,
        "clean_background_expected": false,
        "diagnostics": [
          "multiple base_structural_unit markers in use_numbered_elements ([1, 2, 3]); dominant_target_unit_marker_number left empty (W19B-1 lock — no lexical disambiguation)"
        ]
      },
      "L04B05": {
        "bg_id": "L04B05",
        "fp_id": "fp_l04_interior_main",
        "use_numbered_elements": [
          2,
          5,
          8,
          10,
          12,
          16,
          17,
          18,
          19,
          22,
          23,
          24,
          29,
          30,
          31,
          32,
          33,
          34,
          35
        ],
        "ignore_numbered_elements": [
          36,
          37,
          38,
          39,
          40,
          41,
          42,
          43,
          44
        ],
        "base_markers_to_reference": [
          {
            "number": 2,
            "label": "shared living dining zone",
            "category": "area",
            "position_hint": "central main room, connecting entry, kitchenette, bedrooms, and bathroom",
            "base_layer_decision": "base_structural_unit",
            "render_role": "not_applicable",
            "top_down_legibility": "not_applicable"
          },
          {
            "number": 5,
            "label": "young adult bedroom private zone",
            "category": "area",
            "position_hint": "northeast room accessed from the shared living dining zone",
            "base_layer_decision": "base_structural_unit",
            "render_role": "not_applicable",
            "top_down_legibility": "not_applicable"
          },
          {
            "number": 8,
            "label": "living area small sliding window",
            "category": "opening",
            "position_hint": "north or northwest wall of the shared living dining zone",
            "base_layer_decision": "base_opening",
            "render_role": "not_applicable",
            "top_down_legibility": "not_applicable"
          },
          {
            "number": 10,
            "label": "young bedroom door",
            "category": "opening",
            "position_hint": "east side of the shared zone opening into the young adult bedroom",
            "base_layer_decision": "base_opening",
            "render_role": "not_applicable",
            "top_down_legibility": "not_applicable"
          },
          {
            "number": 12,
            "label": "young bedroom sliding window",
            "category": "opening",
            "position_hint": "east wall of the young adult bedroom, behind the curtain line",
            "base_layer_decision": "base_opening",
            "render_role": "not_applicable",
            "top_down_legibility": "not_applicable"
          },
          {
            "number": 16,
            "label": "small dining table",
            "category": "furniture",
            "position_hint": "center-left of the shared living dining zone near the kitchenette",
            "base_layer_decision": "base_persistent_furniture",
            "render_role": "not_applicable",
            "top_down_legibility": "not_applicable"
          },
          {
            "number": 17,
            "label": "dining chair set",
            "category": "furniture",
            "position_hint": "clustered around the small dining table in the shared zone",
            "base_layer_decision": "base_persistent_furniture",
            "render_role": "not_applicable",
            "top_down_legibility": "not_applicable"
          },
          {
            "number": 18,
            "label": "television on low stand",
            "category": "furniture",
            "position_hint": "east or southeast wall of the shared living dining zone facing the table",
            "base_layer_decision": "base_persistent_furniture",
            "render_role": "not_applicable",
            "top_down_legibility": "not_applicable"
          },
          {
            "number": 19,
            "label": "floor lamp",
            "category": "furniture",
            "position_hint": "corner of the shared living dining zone near the television wall",
            "base_layer_decision": "base_persistent_furniture",
            "render_role": "not_applicable",
            "top_down_legibility": "not_applicable"
          },
          {
            "number": 22,
            "label": "young bed",
            "category": "furniture",
            "position_hint": "inside the young adult bedroom, headboard against the interior wall near the door side",
            "base_layer_decision": "base_persistent_furniture",
            "render_role": "not_applicable",
            "top_down_legibility": "not_applicable"
          },
          {
            "number": 23,
            "label": "young wardrobe and shelving",
            "category": "furniture",
            "position_hint": "along the south wall of the young adult bedroom",
            "base_layer_decision": "base_persistent_furniture",
            "render_role": "not_applicable",
            "top_down_legibility": "not_applicable"
          },
          {
            "number": 24,
            "label": "young bedroom curtain and track",
            "category": "prop",
            "position_hint": "fixed across the young bedroom window wall at the east side",
            "base_layer_decision": "base_persistent_fixture",
            "render_role": "not_applicable",
            "top_down_legibility": "not_applicable"
          }
        ],
        "transient_markers_to_describe": [
          {
            "number": 29,
            "label": "small circular wrist mark",
            "category": "prop",
            "position_hint": "on a resident or victim wrist when the person is present near the living table or young bedroom",
            "base_layer_decision": "state_overlay_plot_cue",
            "render_role": "not_applicable",
            "top_down_legibility": "not_applicable"
          },
          {
            "number": 30,
            "label": "active television news glow",
            "category": "prop",
            "position_hint": "emanating from the television at number 18 during the news-viewing state",
            "base_layer_decision": "state_overlay_plot_cue",
            "render_role": "not_applicable",
            "top_down_legibility": "not_applicable"
          },
          {
            "number": 31,
            "label": "two tea cups with one overturned",
            "category": "prop",
            "position_hint": "on or near the dining table at number 16 during the disturbed night state",
            "base_layer_decision": "state_overlay_transient_object",
            "render_role": "not_applicable",
            "top_down_legibility": "not_applicable"
          },
          {
            "number": 32,
            "label": "blood pool and footprints in young bedroom",
            "category": "prop",
            "position_hint": "on the floor of number 5, leading from the room center toward number 24",
            "base_layer_decision": "state_overlay_plot_cue",
            "render_role": "not_applicable",
            "top_down_legibility": "not_applicable"
          },
          {
            "number": 33,
            "label": "body hidden behind curtain",
            "category": "prop",
            "position_hint": "behind number 24 in the young adult bedroom",
            "base_layer_decision": "state_overlay_transient_object",
            "render_role": "not_applicable",
            "top_down_legibility": "not_applicable"
          },
          {
            "number": 34,
            "label": "crumpled clue photo in victim hand",
            "category": "prop",
            "position_hint": "with the body behind number 24 during the murder-scene state",
            "base_layer_decision": "state_overlay_transient_object",
            "render_role": "not_applicable",
            "top_down_legibility": "not_applicable"
          },
          {
            "number": 35,
            "label": "red circle appearing on wall above young bed",
            "category": "prop",
            "position_hint": "on the wall above or beside number 22 in the young adult bedroom",
            "base_layer_decision": "state_overlay_plot_cue",
            "render_role": "not_applicable",
            "top_down_legibility": "not_applicable"
          }
        ],
        "ignored_state_overlay_markers": [
          {
            "number": 36,
            "label": "over-clean vanished-body state",
            "category": "prop",
            "position_hint": "throughout number 5 and around number 16 where prior traces are absent",
            "base_layer_decision": "state_overlay_plot_cue",
            "render_role": "not_applicable",
            "top_down_legibility": "not_applicable"
          },
          {
            "number": 37,
            "label": "subtly shifted backpack and doll",
            "category": "prop",
            "position_hint": "inside number 5 near number 23, slightly displaced from the earlier arrangement",
            "base_layer_decision": "state_overlay_transient_object",
            "render_role": "not_applicable",
            "top_down_legibility": "not_applicable"
          },
          {
            "number": 38,
            "label": "hallucinated red circle in bathroom mirror",
            "category": "prop",
            "position_hint": "inside number 27 as a reflected or subjective visual cue",
            "base_layer_decision": "state_overlay_plot_cue",
            "render_role": "not_applicable",
            "top_down_legibility": "not_applicable"
          },
          {
            "number": 39,
            "label": "distorted face in family photo frame",
            "category": "prop",
            "position_hint": "within the image surface of number 28 on the dining table",
            "base_layer_decision": "state_overlay_plot_cue",
            "render_role": "not_applicable",
            "top_down_legibility": "not_applicable"
          },
          {
            "number": 40,
            "label": "red circle with bloodied clue photo pinned at center",
            "category": "prop",
            "position_hint": "on the young bedroom wall visible from number 10, near number 22",
            "base_layer_decision": "state_overlay_plot_cue",
            "render_role": "not_applicable",
            "top_down_legibility": "not_applicable"
          },
          {
            "number": 41,
            "label": "ransacked scattered belongings and overturned chairs",
            "category": "prop",
            "position_hint": "across number 2 and around numbers 16 and 17",
            "base_layer_decision": "state_overlay_transient_object",
            "render_role": "not_applicable",
            "top_down_legibility": "not_applicable"
          },
          {
            "number": 42,
            "label": "living window forced open state",
            "category": "opening",
            "position_hint": "at number 8 during the ransacked-room state",
            "base_layer_decision": "state_overlay_transient_object",
            "render_role": "not_applicable",
            "top_down_legibility": "not_applicable"
          },
          {
            "number": 43,
            "label": "half-open entrance door wind-rattle state",
            "category": "opening",
            "position_hint": "at number 7 during the bleak abandoned-room state",
            "base_layer_decision": "state_overlay_transient_object",
            "render_role": "not_applicable",
            "top_down_legibility": "not_applicable"
          },
          {
            "number": 44,
            "label": "intruder footprints through living area",
            "category": "prop",
            "position_hint": "across number 1 and number 2, crossing toward the window and bedroom door",
            "base_layer_decision": "state_overlay_plot_cue",
            "render_role": "not_applicable",
            "top_down_legibility": "not_applicable"
          }
        ],
        "target_unit_marker_numbers": [
          2,
          5
        ],
        "dominant_target_unit_marker_number": null,
        "clean_background_expected": false,
        "diagnostics": [
          "multiple base_structural_unit markers in use_numbered_elements ([2, 5]); dominant_target_unit_marker_number left empty (W19B-1 lock — no lexical disambiguation)"
        ]
      },
      "L04B06": {
        "bg_id": "L04B06",
        "fp_id": "fp_l04_interior_main",
        "use_numbered_elements": [
          2,
          5,
          10,
          12,
          16,
          17,
          22,
          23,
          24,
          36,
          37
        ],
        "ignore_numbered_elements": [
          29,
          30,
          31,
          32,
          33,
          34,
          35,
          38,
          39,
          40,
          41,
          42,
          43,
          44
        ],
        "base_markers_to_reference": [
          {
            "number": 2,
            "label": "shared living dining zone",
            "category": "area",
            "position_hint": "central main room, connecting entry, kitchenette, bedrooms, and bathroom",
            "base_layer_decision": "base_structural_unit",
            "render_role": "not_applicable",
            "top_down_legibility": "not_applicable"
          },
          {
            "number": 5,
            "label": "young adult bedroom private zone",
            "category": "area",
            "position_hint": "northeast room accessed from the shared living dining zone",
            "base_layer_decision": "base_structural_unit",
            "render_role": "not_applicable",
            "top_down_legibility": "not_applicable"
          },
          {
            "number": 10,
            "label": "young bedroom door",
            "category": "opening",
            "position_hint": "east side of the shared zone opening into the young adult bedroom",
            "base_layer_decision": "base_opening",
            "render_role": "not_applicable",
            "top_down_legibility": "not_applicable"
          },
          {
            "number": 12,
            "label": "young bedroom sliding window",
            "category": "opening",
            "position_hint": "east wall of the young adult bedroom, behind the curtain line",
            "base_layer_decision": "base_opening",
            "render_role": "not_applicable",
            "top_down_legibility": "not_applicable"
          },
          {
            "number": 16,
            "label": "small dining table",
            "category": "furniture",
            "position_hint": "center-left of the shared living dining zone near the kitchenette",
            "base_layer_decision": "base_persistent_furniture",
            "render_role": "not_applicable",
            "top_down_legibility": "not_applicable"
          },
          {
            "number": 17,
            "label": "dining chair set",
            "category": "furniture",
            "position_hint": "clustered around the small dining table in the shared zone",
            "base_layer_decision": "base_persistent_furniture",
            "render_role": "not_applicable",
            "top_down_legibility": "not_applicable"
          },
          {
            "number": 22,
            "label": "young bed",
            "category": "furniture",
            "position_hint": "inside the young adult bedroom, headboard against the interior wall near the door side",
            "base_layer_decision": "base_persistent_furniture",
            "render_role": "not_applicable",
            "top_down_legibility": "not_applicable"
          },
          {
            "number": 23,
            "label": "young wardrobe and shelving",
            "category": "furniture",
            "position_hint": "along the south wall of the young adult bedroom",
            "base_layer_decision": "base_persistent_furniture",
            "render_role": "not_applicable",
            "top_down_legibility": "not_applicable"
          },
          {
            "number": 24,
            "label": "young bedroom curtain and track",
            "category": "prop",
            "position_hint": "fixed across the young bedroom window wall at the east side",
            "base_layer_decision": "base_persistent_fixture",
            "render_role": "not_applicable",
            "top_down_legibility": "not_applicable"
          }
        ],
        "transient_markers_to_describe": [
          {
            "number": 36,
            "label": "over-clean vanished-body state",
            "category": "prop",
            "position_hint": "throughout number 5 and around number 16 where prior traces are absent",
            "base_layer_decision": "state_overlay_plot_cue",
            "render_role": "not_applicable",
            "top_down_legibility": "not_applicable"
          },
          {
            "number": 37,
            "label": "subtly shifted backpack and doll",
            "category": "prop",
            "position_hint": "inside number 5 near number 23, slightly displaced from the earlier arrangement",
            "base_layer_decision": "state_overlay_transient_object",
            "render_role": "not_applicable",
            "top_down_legibility": "not_applicable"
          }
        ],
        "ignored_state_overlay_markers": [
          {
            "number": 29,
            "label": "small circular wrist mark",
            "category": "prop",
            "position_hint": "on a resident or victim wrist when the person is present near the living table or young bedroom",
            "base_layer_decision": "state_overlay_plot_cue",
            "render_role": "not_applicable",
            "top_down_legibility": "not_applicable"
          },
          {
            "number": 30,
            "label": "active television news glow",
            "category": "prop",
            "position_hint": "emanating from the television at number 18 during the news-viewing state",
            "base_layer_decision": "state_overlay_plot_cue",
            "render_role": "not_applicable",
            "top_down_legibility": "not_applicable"
          },
          {
            "number": 31,
            "label": "two tea cups with one overturned",
            "category": "prop",
            "position_hint": "on or near the dining table at number 16 during the disturbed night state",
            "base_layer_decision": "state_overlay_transient_object",
            "render_role": "not_applicable",
            "top_down_legibility": "not_applicable"
          },
          {
            "number": 32,
            "label": "blood pool and footprints in young bedroom",
            "category": "prop",
            "position_hint": "on the floor of number 5, leading from the room center toward number 24",
            "base_layer_decision": "state_overlay_plot_cue",
            "render_role": "not_applicable",
            "top_down_legibility": "not_applicable"
          },
          {
            "number": 33,
            "label": "body hidden behind curtain",
            "category": "prop",
            "position_hint": "behind number 24 in the young adult bedroom",
            "base_layer_decision": "state_overlay_transient_object",
            "render_role": "not_applicable",
            "top_down_legibility": "not_applicable"
          },
          {
            "number": 34,
            "label": "crumpled clue photo in victim hand",
            "category": "prop",
            "position_hint": "with the body behind number 24 during the murder-scene state",
            "base_layer_decision": "state_overlay_transient_object",
            "render_role": "not_applicable",
            "top_down_legibility": "not_applicable"
          },
          {
            "number": 35,
            "label": "red circle appearing on wall above young bed",
            "category": "prop",
            "position_hint": "on the wall above or beside number 22 in the young adult bedroom",
            "base_layer_decision": "state_overlay_plot_cue",
            "render_role": "not_applicable",
            "top_down_legibility": "not_applicable"
          },
          {
            "number": 38,
            "label": "hallucinated red circle in bathroom mirror",
            "category": "prop",
            "position_hint": "inside number 27 as a reflected or subjective visual cue",
            "base_layer_decision": "state_overlay_plot_cue",
            "render_role": "not_applicable",
            "top_down_legibility": "not_applicable"
          },
          {
            "number": 39,
            "label": "distorted face in family photo frame",
            "category": "prop",
            "position_hint": "within the image surface of number 28 on the dining table",
            "base_layer_decision": "state_overlay_plot_cue",
            "render_role": "not_applicable",
            "top_down_legibility": "not_applicable"
          },
          {
            "number": 40,
            "label": "red circle with bloodied clue photo pinned at center",
            "category": "prop",
            "position_hint": "on the young bedroom wall visible from number 10, near number 22",
            "base_layer_decision": "state_overlay_plot_cue",
            "render_role": "not_applicable",
            "top_down_legibility": "not_applicable"
          },
          {
            "number": 41,
            "label": "ransacked scattered belongings and overturned chairs",
            "category": "prop",
            "position_hint": "across number 2 and around numbers 16 and 17",
            "base_layer_decision": "state_overlay_transient_object",
            "render_role": "not_applicable",
            "top_down_legibility": "not_applicable"
          },
          {
            "number": 42,
            "label": "living window forced open state",
            "category": "opening",
            "position_hint": "at number 8 during the ransacked-room state",
            "base_layer_decision": "state_overlay_transient_object",
            "render_role": "not_applicable",
            "top_down_legibility": "not_applicable"
          },
          {
            "number": 43,
            "label": "half-open entrance door wind-rattle state",
            "category": "opening",
            "position_hint": "at number 7 during the bleak abandoned-room state",
            "base_layer_decision": "state_overlay_transient_object",
            "render_role": "not_applicable",
            "top_down_legibility": "not_applicable"
          },
          {
            "number": 44,
            "label": "intruder footprints through living area",
            "category": "prop",
            "position_hint": "across number 1 and number 2, crossing toward the window and bedroom door",
            "base_layer_decision": "state_overlay_plot_cue",
            "render_role": "not_applicable",
            "top_down_legibility": "not_applicable"
          }
        ],
        "target_unit_marker_numbers": [
          2,
          5
        ],
        "dominant_target_unit_marker_number": null,
        "clean_background_expected": false,
        "diagnostics": [
          "multiple base_structural_unit markers in use_numbered_elements ([2, 5]); dominant_target_unit_marker_number left empty (W19B-1 lock — no lexical disambiguation)"
        ]
      },
      "L04B04": {
        "bg_id": "L04B04",
        "fp_id": "fp_l04_interior_main",
        "use_numbered_elements": [
          2,
          3,
          5,
          6,
          10,
          11,
          14,
          16,
          17,
          25,
          26,
          27,
          28,
          38,
          39
        ],
        "ignore_numbered_elements": [
          29,
          30,
          31,
          32,
          33,
          34,
          35,
          36,
          37,
          40,
          41,
          42,
          43,
          44
        ],
        "base_markers_to_reference": [
          {
            "number": 2,
            "label": "shared living dining zone",
            "category": "area",
            "position_hint": "central main room, connecting entry, kitchenette, bedrooms, and bathroom",
            "base_layer_decision": "base_structural_unit",
            "render_role": "not_applicable",
            "top_down_legibility": "not_applicable"
          },
          {
            "number": 3,
            "label": "kitchenette service strip",
            "category": "area",
            "position_hint": "west side of the shared zone along the plumbing wall",
            "base_layer_decision": "base_structural_unit",
            "render_role": "not_applicable",
            "top_down_legibility": "not_applicable"
          },
          {
            "number": 5,
            "label": "young adult bedroom private zone",
            "category": "area",
            "position_hint": "northeast room accessed from the shared living dining zone",
            "base_layer_decision": "base_structural_unit",
            "render_role": "not_applicable",
            "top_down_legibility": "not_applicable"
          },
          {
            "number": 6,
            "label": "bathroom service zone",
            "category": "area",
            "position_hint": "southwest interior corner near the entry and kitchenette",
            "base_layer_decision": "base_structural_unit",
            "render_role": "not_applicable",
            "top_down_legibility": "not_applicable"
          },
          {
            "number": 10,
            "label": "young bedroom door",
            "category": "opening",
            "position_hint": "east side of the shared zone opening into the young adult bedroom",
            "base_layer_decision": "base_opening",
            "render_role": "not_applicable",
            "top_down_legibility": "not_applicable"
          },
          {
            "number": 11,
            "label": "bathroom door",
            "category": "opening",
            "position_hint": "southwest side of the shared zone opening into the bathroom",
            "base_layer_decision": "base_opening",
            "render_role": "not_applicable",
            "top_down_legibility": "not_applicable"
          },
          {
            "number": 14,
            "label": "compact sink counter with faucet",
            "category": "prop",
            "position_hint": "west wall of the kitchenette service strip",
            "base_layer_decision": "base_persistent_fixture",
            "render_role": "not_applicable",
            "top_down_legibility": "not_applicable"
          },
          {
            "number": 16,
            "label": "small dining table",
            "category": "furniture",
            "position_hint": "center-left of the shared living dining zone near the kitchenette",
            "base_layer_decision": "base_persistent_furniture",
            "render_role": "not_applicable",
            "top_down_legibility": "not_applicable"
          },
          {
            "number": 17,
            "label": "dining chair set",
            "category": "furniture",
            "position_hint": "clustered around the small dining table in the shared zone",
            "base_layer_decision": "base_persistent_furniture",
            "render_role": "not_applicable",
            "top_down_legibility": "not_applicable"
          },
          {
            "number": 25,
            "label": "bathroom washbasin",
            "category": "prop",
            "position_hint": "inside the bathroom on the plumbing wall shared with the kitchenette",
            "base_layer_decision": "base_persistent_fixture",
            "render_role": "not_applicable",
            "top_down_legibility": "not_applicable"
          },
          {
            "number": 26,
            "label": "toilet",
            "category": "prop",
            "position_hint": "inside the bathroom opposite or beside the washbasin",
            "base_layer_decision": "base_persistent_fixture",
            "render_role": "not_applicable",
            "top_down_legibility": "not_applicable"
          },
          {
            "number": 27,
            "label": "bathroom mirror",
            "category": "prop",
            "position_hint": "mounted above the bathroom washbasin",
            "base_layer_decision": "base_persistent_fixture",
            "render_role": "not_applicable",
            "top_down_legibility": "not_applicable"
          },
          {
            "number": 28,
            "label": "family photo frame on dining table",
            "category": "prop",
            "position_hint": "on top of the small dining table in the shared living dining zone",
            "base_layer_decision": "base_persistent_furniture",
            "render_role": "not_applicable",
            "top_down_legibility": "not_applicable"
          }
        ],
        "transient_markers_to_describe": [
          {
            "number": 38,
            "label": "hallucinated red circle in bathroom mirror",
            "category": "prop",
            "position_hint": "inside number 27 as a reflected or subjective visual cue",
            "base_layer_decision": "state_overlay_plot_cue",
            "render_role": "not_applicable",
            "top_down_legibility": "not_applicable"
          },
          {
            "number": 39,
            "label": "distorted face in family photo frame",
            "category": "prop",
            "position_hint": "within the image surface of number 28 on the dining table",
            "base_layer_decision": "state_overlay_plot_cue",
            "render_role": "not_applicable",
            "top_down_legibility": "not_applicable"
          }
        ],
        "ignored_state_overlay_markers": [
          {
            "number": 29,
            "label": "small circular wrist mark",
            "category": "prop",
            "position_hint": "on a resident or victim wrist when the person is present near the living table or young bedroom",
            "base_layer_decision": "state_overlay_plot_cue",
            "render_role": "not_applicable",
            "top_down_legibility": "not_applicable"
          },
          {
            "number": 30,
            "label": "active television news glow",
            "category": "prop",
            "position_hint": "emanating from the television at number 18 during the news-viewing state",
            "base_layer_decision": "state_overlay_plot_cue",
            "render_role": "not_applicable",
            "top_down_legibility": "not_applicable"
          },
          {
            "number": 31,
            "label": "two tea cups with one overturned",
            "category": "prop",
            "position_hint": "on or near the dining table at number 16 during the disturbed night state",
            "base_layer_decision": "state_overlay_transient_object",
            "render_role": "not_applicable",
            "top_down_legibility": "not_applicable"
          },
          {
            "number": 32,
            "label": "blood pool and footprints in young bedroom",
            "category": "prop",
            "position_hint": "on the floor of number 5, leading from the room center toward number 24",
            "base_layer_decision": "state_overlay_plot_cue",
            "render_role": "not_applicable",
            "top_down_legibility": "not_applicable"
          },
          {
            "number": 33,
            "label": "body hidden behind curtain",
            "category": "prop",
            "position_hint": "behind number 24 in the young adult bedroom",
            "base_layer_decision": "state_overlay_transient_object",
            "render_role": "not_applicable",
            "top_down_legibility": "not_applicable"
          },
          {
            "number": 34,
            "label": "crumpled clue photo in victim hand",
            "category": "prop",
            "position_hint": "with the body behind number 24 during the murder-scene state",
            "base_layer_decision": "state_overlay_transient_object",
            "render_role": "not_applicable",
            "top_down_legibility": "not_applicable"
          },
          {
            "number": 35,
            "label": "red circle appearing on wall above young bed",
            "category": "prop",
            "position_hint": "on the wall above or beside number 22 in the young adult bedroom",
            "base_layer_decision": "state_overlay_plot_cue",
            "render_role": "not_applicable",
            "top_down_legibility": "not_applicable"
          },
          {
            "number": 36,
            "label": "over-clean vanished-body state",
            "category": "prop",
            "position_hint": "throughout number 5 and around number 16 where prior traces are absent",
            "base_layer_decision": "state_overlay_plot_cue",
            "render_role": "not_applicable",
            "top_down_legibility": "not_applicable"
          },
          {
            "number": 37,
            "label": "subtly shifted backpack and doll",
            "category": "prop",
            "position_hint": "inside number 5 near number 23, slightly displaced from the earlier arrangement",
            "base_layer_decision": "state_overlay_transient_object",
            "render_role": "not_applicable",
            "top_down_legibility": "not_applicable"
          },
          {
            "number": 40,
            "label": "red circle with bloodied clue photo pinned at center",
            "category": "prop",
            "position_hint": "on the young bedroom wall visible from number 10, near number 22",
            "base_layer_decision": "state_overlay_plot_cue",
            "render_role": "not_applicable",
            "top_down_legibility": "not_applicable"
          },
          {
            "number": 41,
            "label": "ransacked scattered belongings and overturned chairs",
            "category": "prop",
            "position_hint": "across number 2 and around numbers 16 and 17",
            "base_layer_decision": "state_overlay_transient_object",
            "render_role": "not_applicable",
            "top_down_legibility": "not_applicable"
          },
          {
            "number": 42,
            "label": "living window forced open state",
            "category": "opening",
            "position_hint": "at number 8 during the ransacked-room state",
            "base_layer_decision": "state_overlay_transient_object",
            "render_role": "not_applicable",
            "top_down_legibility": "not_applicable"
          },
          {
            "number": 43,
            "label": "half-open entrance door wind-rattle state",
            "category": "opening",
            "position_hint": "at number 7 during the bleak abandoned-room state",
            "base_layer_decision": "state_overlay_transient_object",
            "render_role": "not_applicable",
            "top_down_legibility": "not_applicable"
          },
          {
            "number": 44,
            "label": "intruder footprints through living area",
            "category": "prop",
            "position_hint": "across number 1 and number 2, crossing toward the window and bedroom door",
            "base_layer_decision": "state_overlay_plot_cue",
            "render_role": "not_applicable",
            "top_down_legibility": "not_applicable"
          }
        ],
        "target_unit_marker_numbers": [
          2,
          3,
          5,
          6
        ],
        "dominant_target_unit_marker_number": null,
        "clean_background_expected": false,
        "diagnostics": [
          "multiple base_structural_unit markers in use_numbered_elements ([2, 3, 5, 6]); dominant_target_unit_marker_number left empty (W19B-1 lock — no lexical disambiguation)"
        ]
      },
      "L04B02": {
        "bg_id": "L04B02",
        "fp_id": "fp_l04_interior_main",
        "use_numbered_elements": [
          2,
          5,
          10,
          12,
          22,
          23,
          24,
          40
        ],
        "ignore_numbered_elements": [
          29,
          30,
          31,
          32,
          33,
          34,
          35,
          36,
          37,
          38,
          39,
          41,
          42,
          43,
          44
        ],
        "base_markers_to_reference": [
          {
            "number": 2,
            "label": "shared living dining zone",
            "category": "area",
            "position_hint": "central main room, connecting entry, kitchenette, bedrooms, and bathroom",
            "base_layer_decision": "base_structural_unit",
            "render_role": "not_applicable",
            "top_down_legibility": "not_applicable"
          },
          {
            "number": 5,
            "label": "young adult bedroom private zone",
            "category": "area",
            "position_hint": "northeast room accessed from the shared living dining zone",
            "base_layer_decision": "base_structural_unit",
            "render_role": "not_applicable",
            "top_down_legibility": "not_applicable"
          },
          {
            "number": 10,
            "label": "young bedroom door",
            "category": "opening",
            "position_hint": "east side of the shared zone opening into the young adult bedroom",
            "base_layer_decision": "base_opening",
            "render_role": "not_applicable",
            "top_down_legibility": "not_applicable"
          },
          {
            "number": 12,
            "label": "young bedroom sliding window",
            "category": "opening",
            "position_hint": "east wall of the young adult bedroom, behind the curtain line",
            "base_layer_decision": "base_opening",
            "render_role": "not_applicable",
            "top_down_legibility": "not_applicable"
          },
          {
            "number": 22,
            "label": "young bed",
            "category": "furniture",
            "position_hint": "inside the young adult bedroom, headboard against the interior wall near the door side",
            "base_layer_decision": "base_persistent_furniture",
            "render_role": "not_applicable",
            "top_down_legibility": "not_applicable"
          },
          {
            "number": 23,
            "label": "young wardrobe and shelving",
            "category": "furniture",
            "position_hint": "along the south wall of the young adult bedroom",
            "base_layer_decision": "base_persistent_furniture",
            "render_role": "not_applicable",
            "top_down_legibility": "not_applicable"
          },
          {
            "number": 24,
            "label": "young bedroom curtain and track",
            "category": "prop",
            "position_hint": "fixed across the young bedroom window wall at the east side",
            "base_layer_decision": "base_persistent_fixture",
            "render_role": "not_applicable",
            "top_down_legibility": "not_applicable"
          }
        ],
        "transient_markers_to_describe": [
          {
            "number": 40,
            "label": "red circle with bloodied clue photo pinned at center",
            "category": "prop",
            "position_hint": "on the young bedroom wall visible from number 10, near number 22",
            "base_layer_decision": "state_overlay_plot_cue",
            "render_role": "not_applicable",
            "top_down_legibility": "not_applicable"
          }
        ],
        "ignored_state_overlay_markers": [
          {
            "number": 29,
            "label": "small circular wrist mark",
            "category": "prop",
            "position_hint": "on a resident or victim wrist when the person is present near the living table or young bedroom",
            "base_layer_decision": "state_overlay_plot_cue",
            "render_role": "not_applicable",
            "top_down_legibility": "not_applicable"
          },
          {
            "number": 30,
            "label": "active television news glow",
            "category": "prop",
            "position_hint": "emanating from the television at number 18 during the news-viewing state",
            "base_layer_decision": "state_overlay_plot_cue",
            "render_role": "not_applicable",
            "top_down_legibility": "not_applicable"
          },
          {
            "number": 31,
            "label": "two tea cups with one overturned",
            "category": "prop",
            "position_hint": "on or near the dining table at number 16 during the disturbed night state",
            "base_layer_decision": "state_overlay_transient_object",
            "render_role": "not_applicable",
            "top_down_legibility": "not_applicable"
          },
          {
            "number": 32,
            "label": "blood pool and footprints in young bedroom",
            "category": "prop",
            "position_hint": "on the floor of number 5, leading from the room center toward number 24",
            "base_layer_decision": "state_overlay_plot_cue",
            "render_role": "not_applicable",
            "top_down_legibility": "not_applicable"
          },
          {
            "number": 33,
            "label": "body hidden behind curtain",
            "category": "prop",
            "position_hint": "behind number 24 in the young adult bedroom",
            "base_layer_decision": "state_overlay_transient_object",
            "render_role": "not_applicable",
            "top_down_legibility": "not_applicable"
          },
          {
            "number": 34,
            "label": "crumpled clue photo in victim hand",
            "category": "prop",
            "position_hint": "with the body behind number 24 during the murder-scene state",
            "base_layer_decision": "state_overlay_transient_object",
            "render_role": "not_applicable",
            "top_down_legibility": "not_applicable"
          },
          {
            "number": 35,
            "label": "red circle appearing on wall above young bed",
            "category": "prop",
            "position_hint": "on the wall above or beside number 22 in the young adult bedroom",
            "base_layer_decision": "state_overlay_plot_cue",
            "render_role": "not_applicable",
            "top_down_legibility": "not_applicable"
          },
          {
            "number": 36,
            "label": "over-clean vanished-body state",
            "category": "prop",
            "position_hint": "throughout number 5 and around number 16 where prior traces are absent",
            "base_layer_decision": "state_overlay_plot_cue",
            "render_role": "not_applicable",
            "top_down_legibility": "not_applicable"
          },
          {
            "number": 37,
            "label": "subtly shifted backpack and doll",
            "category": "prop",
            "position_hint": "inside number 5 near number 23, slightly displaced from the earlier arrangement",
            "base_layer_decision": "state_overlay_transient_object",
            "render_role": "not_applicable",
            "top_down_legibility": "not_applicable"
          },
          {
            "number": 38,
            "label": "hallucinated red circle in bathroom mirror",
            "category": "prop",
            "position_hint": "inside number 27 as a reflected or subjective visual cue",
            "base_layer_decision": "state_overlay_plot_cue",
            "render_role": "not_applicable",
            "top_down_legibility": "not_applicable"
          },
          {
            "number": 39,
            "label": "distorted face in family photo frame",
            "category": "prop",
            "position_hint": "within the image surface of number 28 on the dining table",
            "base_layer_decision": "state_overlay_plot_cue",
            "render_role": "not_applicable",
            "top_down_legibility": "not_applicable"
          },
          {
            "number": 41,
            "label": "ransacked scattered belongings and overturned chairs",
            "category": "prop",
            "position_hint": "across number 2 and around numbers 16 and 17",
            "base_layer_decision": "state_overlay_transient_object",
            "render_role": "not_applicable",
            "top_down_legibility": "not_applicable"
          },
          {
            "number": 42,
            "label": "living window forced open state",
            "category": "opening",
            "position_hint": "at number 8 during the ransacked-room state",
            "base_layer_decision": "state_overlay_transient_object",
            "render_role": "not_applicable",
            "top_down_legibility": "not_applicable"
          },
          {
            "number": 43,
            "label": "half-open entrance door wind-rattle state",
            "category": "opening",
            "position_hint": "at number 7 during the bleak abandoned-room state",
            "base_layer_decision": "state_overlay_transient_object",
            "render_role": "not_applicable",
            "top_down_legibility": "not_applicable"
          },
          {
            "number": 44,
            "label": "intruder footprints through living area",
            "category": "prop",
            "position_hint": "across number 1 and number 2, crossing toward the window and bedroom door",
            "base_layer_decision": "state_overlay_plot_cue",
            "render_role": "not_applicable",
            "top_down_legibility": "not_applicable"
          }
        ],
        "target_unit_marker_numbers": [
          2,
          5
        ],
        "dominant_target_unit_marker_number": null,
        "clean_background_expected": false,
        "diagnostics": [
          "multiple base_structural_unit markers in use_numbered_elements ([2, 5]); dominant_target_unit_marker_number left empty (W19B-1 lock — no lexical disambiguation)"
        ]
      },
      "L04B03": {
        "bg_id": "L04B03",
        "fp_id": "fp_l04_interior_main",
        "use_numbered_elements": [
          1,
          2,
          3,
          5,
          7,
          8,
          10,
          12,
          14,
          16,
          17,
          18,
          19,
          22,
          23,
          24,
          41,
          42,
          43,
          44
        ],
        "ignore_numbered_elements": [
          29,
          30,
          31,
          32,
          33,
          34,
          35,
          36,
          37,
          38,
          39,
          40
        ],
        "base_markers_to_reference": [
          {
            "number": 1,
            "label": "entrance threshold zone",
            "category": "area",
            "position_hint": "southwest edge of the unit, immediately inside the metal entrance door",
            "base_layer_decision": "base_structural_unit",
            "render_role": "not_applicable",
            "top_down_legibility": "not_applicable"
          },
          {
            "number": 2,
            "label": "shared living dining zone",
            "category": "area",
            "position_hint": "central main room, connecting entry, kitchenette, bedrooms, and bathroom",
            "base_layer_decision": "base_structural_unit",
            "render_role": "not_applicable",
            "top_down_legibility": "not_applicable"
          },
          {
            "number": 3,
            "label": "kitchenette service strip",
            "category": "area",
            "position_hint": "west side of the shared zone along the plumbing wall",
            "base_layer_decision": "base_structural_unit",
            "render_role": "not_applicable",
            "top_down_legibility": "not_applicable"
          },
          {
            "number": 5,
            "label": "young adult bedroom private zone",
            "category": "area",
            "position_hint": "northeast room accessed from the shared living dining zone",
            "base_layer_decision": "base_structural_unit",
            "render_role": "not_applicable",
            "top_down_legibility": "not_applicable"
          },
          {
            "number": 7,
            "label": "metal entrance door",
            "category": "opening",
            "position_hint": "south wall at the threshold, hinged door swinging inward from rooftop landing",
            "base_layer_decision": "base_opening",
            "render_role": "not_applicable",
            "top_down_legibility": "not_applicable"
          },
          {
            "number": 8,
            "label": "living area small sliding window",
            "category": "opening",
            "position_hint": "north or northwest wall of the shared living dining zone",
            "base_layer_decision": "base_opening",
            "render_role": "not_applicable",
            "top_down_legibility": "not_applicable"
          },
          {
            "number": 10,
            "label": "young bedroom door",
            "category": "opening",
            "position_hint": "east side of the shared zone opening into the young adult bedroom",
            "base_layer_decision": "base_opening",
            "render_role": "not_applicable",
            "top_down_legibility": "not_applicable"
          },
          {
            "number": 12,
            "label": "young bedroom sliding window",
            "category": "opening",
            "position_hint": "east wall of the young adult bedroom, behind the curtain line",
            "base_layer_decision": "base_opening",
            "render_role": "not_applicable",
            "top_down_legibility": "not_applicable"
          },
          {
            "number": 14,
            "label": "compact sink counter with faucet",
            "category": "prop",
            "position_hint": "west wall of the kitchenette service strip",
            "base_layer_decision": "base_persistent_fixture",
            "render_role": "not_applicable",
            "top_down_legibility": "not_applicable"
          },
          {
            "number": 16,
            "label": "small dining table",
            "category": "furniture",
            "position_hint": "center-left of the shared living dining zone near the kitchenette",
            "base_layer_decision": "base_persistent_furniture",
            "render_role": "not_applicable",
            "top_down_legibility": "not_applicable"
          },
          {
            "number": 17,
            "label": "dining chair set",
            "category": "furniture",
            "position_hint": "clustered around the small dining table in the shared zone",
            "base_layer_decision": "base_persistent_furniture",
            "render_role": "not_applicable",
            "top_down_legibility": "not_applicable"
          },
          {
            "number": 18,
            "label": "television on low stand",
            "category": "furniture",
            "position_hint": "east or southeast wall of the shared living dining zone facing the table",
            "base_layer_decision": "base_persistent_furniture",
            "render_role": "not_applicable",
            "top_down_legibility": "not_applicable"
          },
          {
            "number": 19,
            "label": "floor lamp",
            "category": "furniture",
            "position_hint": "corner of the shared living dining zone near the television wall",
            "base_layer_decision": "base_persistent_furniture",
            "render_role": "not_applicable",
            "top_down_legibility": "not_applicable"
          },
          {
            "number": 22,
            "label": "young bed",
            "category": "furniture",
            "position_hint": "inside the young adult bedroom, headboard against the interior wall near the door side",
            "base_layer_decision": "base_persistent_furniture",
            "render_role": "not_applicable",
            "top_down_legibility": "not_applicable"
          },
          {
            "number": 23,
            "label": "young wardrobe and shelving",
            "category": "furniture",
            "position_hint": "along the south wall of the young adult bedroom",
            "base_layer_decision": "base_persistent_furniture",
            "render_role": "not_applicable",
            "top_down_legibility": "not_applicable"
          },
          {
            "number": 24,
            "label": "young bedroom curtain and track",
            "category": "prop",
            "position_hint": "fixed across the young bedroom window wall at the east side",
            "base_layer_decision": "base_persistent_fixture",
            "render_role": "not_applicable",
            "top_down_legibility": "not_applicable"
          }
        ],
        "transient_markers_to_describe": [
          {
            "number": 41,
            "label": "ransacked scattered belongings and overturned chairs",
            "category": "prop",
            "position_hint": "across number 2 and around numbers 16 and 17",
            "base_layer_decision": "state_overlay_transient_object",
            "render_role": "not_applicable",
            "top_down_legibility": "not_applicable"
          },
          {
            "number": 42,
            "label": "living window forced open state",
            "category": "opening",
            "position_hint": "at number 8 during the ransacked-room state",
            "base_layer_decision": "state_overlay_transient_object",
            "render_role": "not_applicable",
            "top_down_legibility": "not_applicable"
          },
          {
            "number": 43,
            "label": "half-open entrance door wind-rattle state",
            "category": "opening",
            "position_hint": "at number 7 during the bleak abandoned-room state",
            "base_layer_decision": "state_overlay_transient_object",
            "render_role": "not_applicable",
            "top_down_legibility": "not_applicable"
          },
          {
            "number": 44,
            "label": "intruder footprints through living area",
            "category": "prop",
            "position_hint": "across number 1 and number 2, crossing toward the window and bedroom door",
            "base_layer_decision": "state_overlay_plot_cue",
            "render_role": "not_applicable",
            "top_down_legibility": "not_applicable"
          }
        ],
        "ignored_state_overlay_markers": [
          {
            "number": 29,
            "label": "small circular wrist mark",
            "category": "prop",
            "position_hint": "on a resident or victim wrist when the person is present near the living table or young bedroom",
            "base_layer_decision": "state_overlay_plot_cue",
            "render_role": "not_applicable",
            "top_down_legibility": "not_applicable"
          },
          {
            "number": 30,
            "label": "active television news glow",
            "category": "prop",
            "position_hint": "emanating from the television at number 18 during the news-viewing state",
            "base_layer_decision": "state_overlay_plot_cue",
            "render_role": "not_applicable",
            "top_down_legibility": "not_applicable"
          },
          {
            "number": 31,
            "label": "two tea cups with one overturned",
            "category": "prop",
            "position_hint": "on or near the dining table at number 16 during the disturbed night state",
            "base_layer_decision": "state_overlay_transient_object",
            "render_role": "not_applicable",
            "top_down_legibility": "not_applicable"
          },
          {
            "number": 32,
            "label": "blood pool and footprints in young bedroom",
            "category": "prop",
            "position_hint": "on the floor of number 5, leading from the room center toward number 24",
            "base_layer_decision": "state_overlay_plot_cue",
            "render_role": "not_applicable",
            "top_down_legibility": "not_applicable"
          },
          {
            "number": 33,
            "label": "body hidden behind curtain",
            "category": "prop",
            "position_hint": "behind number 24 in the young adult bedroom",
            "base_layer_decision": "state_overlay_transient_object",
            "render_role": "not_applicable",
            "top_down_legibility": "not_applicable"
          },
          {
            "number": 34,
            "label": "crumpled clue photo in victim hand",
            "category": "prop",
            "position_hint": "with the body behind number 24 during the murder-scene state",
            "base_layer_decision": "state_overlay_transient_object",
            "render_role": "not_applicable",
            "top_down_legibility": "not_applicable"
          },
          {
            "number": 35,
            "label": "red circle appearing on wall above young bed",
            "category": "prop",
            "position_hint": "on the wall above or beside number 22 in the young adult bedroom",
            "base_layer_decision": "state_overlay_plot_cue",
            "render_role": "not_applicable",
            "top_down_legibility": "not_applicable"
          },
          {
            "number": 36,
            "label": "over-clean vanished-body state",
            "category": "prop",
            "position_hint": "throughout number 5 and around number 16 where prior traces are absent",
            "base_layer_decision": "state_overlay_plot_cue",
            "render_role": "not_applicable",
            "top_down_legibility": "not_applicable"
          },
          {
            "number": 37,
            "label": "subtly shifted backpack and doll",
            "category": "prop",
            "position_hint": "inside number 5 near number 23, slightly displaced from the earlier arrangement",
            "base_layer_decision": "state_overlay_transient_object",
            "render_role": "not_applicable",
            "top_down_legibility": "not_applicable"
          },
          {
            "number": 38,
            "label": "hallucinated red circle in bathroom mirror",
            "category": "prop",
            "position_hint": "inside number 27 as a reflected or subjective visual cue",
            "base_layer_decision": "state_overlay_plot_cue",
            "render_role": "not_applicable",
            "top_down_legibility": "not_applicable"
          },
          {
            "number": 39,
            "label": "distorted face in family photo frame",
            "category": "prop",
            "position_hint": "within the image surface of number 28 on the dining table",
            "base_layer_decision": "state_overlay_plot_cue",
            "render_role": "not_applicable",
            "top_down_legibility": "not_applicable"
          },
          {
            "number": 40,
            "label": "red circle with bloodied clue photo pinned at center",
            "category": "prop",
            "position_hint": "on the young bedroom wall visible from number 10, near number 22",
            "base_layer_decision": "state_overlay_plot_cue",
            "render_role": "not_applicable",
            "top_down_legibility": "not_applicable"
          }
        ],
        "target_unit_marker_numbers": [
          1,
          2,
          3,
          5
        ],
        "dominant_target_unit_marker_number": null,
        "clean_background_expected": false,
        "diagnostics": [
          "multiple base_structural_unit markers in use_numbered_elements ([1, 2, 3, 5]); dominant_target_unit_marker_number left empty (W19B-1 lock — no lexical disambiguation)"
        ]
      },
      "L10B01": {
        "bg_id": "L10B01",
        "fp_id": "fp_l10_yard",
        "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": "shared paved yard",
            "category": "area",
            "position_hint": "central open courtyard between gate and building stair base",
            "base_layer_decision": "base_structural_unit",
            "render_role": "not_applicable",
            "top_down_legibility": "not_applicable"
          },
          {
            "number": 2,
            "label": "vehicle access lane",
            "category": "area",
            "position_hint": "west side strip from alley gate into the yard, wide enough for a small police car nose-in stop",
            "base_layer_decision": "base_structural_unit",
            "render_role": "not_applicable",
            "top_down_legibility": "not_applicable"
          },
          {
            "number": 3,
            "label": "pedestrian gate",
            "category": "opening",
            "position_hint": "southwest perimeter wall, narrow entrance from alley into yard",
            "base_layer_decision": "base_opening",
            "render_role": "not_applicable",
            "top_down_legibility": "not_applicable"
          },
          {
            "number": 4,
            "label": "vehicle gate opening",
            "category": "opening",
            "position_hint": "west perimeter wall beside the pedestrian gate, opening onto the narrow alley access lane",
            "base_layer_decision": "base_opening",
            "render_role": "not_applicable",
            "top_down_legibility": "not_applicable"
          },
          {
            "number": 5,
            "label": "building wall and ground-floor edge",
            "category": "area",
            "position_hint": "north and east edge of yard, forming the villa facade boundary",
            "base_layer_decision": "base_structural_unit",
            "render_role": "not_applicable",
            "top_down_legibility": "not_applicable"
          },
          {
            "number": 6,
            "label": "exterior stair base",
            "category": "area",
            "position_hint": "northeast corner of yard, at the start of stairs leading upward to rooftop rooms",
            "base_layer_decision": "base_structural_unit",
            "render_role": "not_applicable",
            "top_down_legibility": "not_applicable"
          },
          {
            "number": 7,
            "label": "stairwell threshold door",
            "category": "opening",
            "position_hint": "at the bottom of the exterior stair route, adjoining the building wall",
            "base_layer_decision": "base_opening",
            "render_role": "not_applicable",
            "top_down_legibility": "not_applicable"
          },
          {
            "number": 8,
            "label": "bicycle parking spot",
            "category": "prop",
            "position_hint": "recessed rear part of the yard near the stair base, partly tucked under or beside the stairs",
            "base_layer_decision": "base_persistent_fixture",
            "render_role": "not_applicable",
            "top_down_legibility": "not_applicable"
          },
          {
            "number": 9,
            "label": "threshold apron",
            "category": "area",
            "position_hint": "small paved apron between shared yard and stair base",
            "base_layer_decision": "base_structural_unit",
            "render_role": "not_applicable",
            "top_down_legibility": "not_applicable"
          },
          {
            "number": 10,
            "label": "yard drain or manhole",
            "category": "prop",
            "position_hint": "low central-to-south portion of paved yard surface",
            "base_layer_decision": "base_persistent_fixture",
            "render_role": "not_applicable",
            "top_down_legibility": "not_applicable"
          },
          {
            "number": 11,
            "label": "perimeter boundary wall",
            "category": "area",
            "position_hint": "outer edge enclosing the small yard on south and west sides",
            "base_layer_decision": "base_structural_unit",
            "render_role": "not_applicable",
            "top_down_legibility": "not_applicable"
          }
        ],
        "transient_markers_to_describe": [
          {
            "number": 12,
            "label": "bicycle left at stair base",
            "category": "prop",
            "position_hint": "leaning or parked near number 8 and number 6 during the late-night arrival scene",
            "base_layer_decision": "state_overlay_transient_object",
            "render_role": "not_applicable",
            "top_down_legibility": "not_applicable"
          },
          {
            "number": 13,
            "label": "police car stopped at access",
            "category": "prop",
            "position_hint": "at number 2 and partly outside number 4, occupying the alley-side vehicle access point",
            "base_layer_decision": "state_overlay_transient_object",
            "render_role": "not_applicable",
            "top_down_legibility": "not_applicable"
          },
          {
            "number": 14,
            "label": "police siren light cue",
            "category": "prop",
            "position_hint": "around number 13 and spilling toward the gate and yard during the confrontation moment",
            "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,
          5,
          6,
          9,
          11
        ],
        "dominant_target_unit_marker_number": null,
        "clean_background_expected": false,
        "diagnostics": [
          "multiple base_structural_unit markers in use_numbered_elements ([1, 2, 5, 6, 9, 11]); dominant_target_unit_marker_number left empty (W19B-1 lock — no lexical disambiguation)"
        ]
      },
      "L10B02": {
        "bg_id": "L10B02",
        "fp_id": "fp_l10_rooftop_entry",
        "use_numbered_elements": [
          1,
          2,
          3,
          4,
          5,
          6,
          7,
          8,
          9,
          10,
          11
        ],
        "ignore_numbered_elements": [],
        "base_markers_to_reference": [
          {
            "number": 1,
            "label": "rooftop landing threshold",
            "category": "area",
            "position_hint": "center-right roof deck directly outside the entrance door",
            "base_layer_decision": "base_structural_unit",
            "render_role": "not_applicable",
            "top_down_legibility": "not_applicable"
          },
          {
            "number": 2,
            "label": "open exterior roof deck",
            "category": "area",
            "position_hint": "main surrounding rooftop area around the landing and utilities",
            "base_layer_decision": "base_structural_unit",
            "render_role": "not_applicable",
            "top_down_legibility": "not_applicable"
          },
          {
            "number": 3,
            "label": "rooftop room footprint",
            "category": "area",
            "position_hint": "east side of plan, behind the entrance facade",
            "base_layer_decision": "base_structural_unit",
            "render_role": "not_applicable",
            "top_down_legibility": "not_applicable"
          },
          {
            "number": 4,
            "label": "stair access bulkhead",
            "category": "area",
            "position_hint": "southwest corner of roof deck, with stairs arriving onto the roof",
            "base_layer_decision": "base_structural_unit",
            "render_role": "not_applicable",
            "top_down_legibility": "not_applicable"
          },
          {
            "number": 5,
            "label": "iron entrance door",
            "category": "opening",
            "position_hint": "west wall of rooftop room, opening onto the 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": "west wall of rooftop room, slightly north of the entrance door",
            "base_layer_decision": "base_opening",
            "render_role": "not_applicable",
            "top_down_legibility": "not_applicable"
          },
          {
            "number": 7,
            "label": "low roof parapet perimeter",
            "category": "area",
            "position_hint": "continuous boundary around the outer roof deck edge",
            "base_layer_decision": "base_structural_unit",
            "render_role": "not_applicable",
            "top_down_legibility": "not_applicable"
          },
          {
            "number": 8,
            "label": "rooftop water tank",
            "category": "prop",
            "position_hint": "northwest utility corner of the roof deck",
            "base_layer_decision": "base_persistent_fixture",
            "render_role": "not_applicable",
            "top_down_legibility": "not_applicable"
          },
          {
            "number": 9,
            "label": "fixed clothesline posts",
            "category": "prop",
            "position_hint": "north and central roof deck, spanning near the water tank and open roof area",
            "base_layer_decision": "base_persistent_fixture",
            "render_role": "not_applicable",
            "top_down_legibility": "not_applicable"
          },
          {
            "number": 10,
            "label": "low drying platform",
            "category": "furniture",
            "position_hint": "north-center of roof deck near the clothesline zone",
            "base_layer_decision": "base_persistent_furniture",
            "render_role": "not_applicable",
            "top_down_legibility": "not_applicable"
          }
        ],
        "transient_markers_to_describe": [
          {
            "number": 11,
            "label": "half-open unlatched door state",
            "category": "opening",
            "position_hint": "at the iron entrance door, visible only in the night approach background overlay",
            "base_layer_decision": "state_overlay_plot_cue",
            "render_role": "not_applicable",
            "top_down_legibility": "not_applicable"
          }
        ],
        "ignored_state_overlay_markers": [],
        "target_unit_marker_numbers": [
          1,
          2,
          3,
          4,
          7
        ],
        "dominant_target_unit_marker_number": null,
        "clean_background_expected": false,
        "diagnostics": [
          "multiple base_structural_unit markers in use_numbered_elements ([1, 2, 3, 4, 7]); dominant_target_unit_marker_number left empty (W19B-1 lock — no lexical disambiguation)"
        ]
      },
      "L08B01": {
        "bg_id": "L08B01",
        "fp_id": "fp_mart_sales_floor",
        "use_numbered_elements": [
          1,
          2,
          3,
          4,
          6,
          7,
          10,
          11,
          12,
          13,
          14,
          15,
          16,
          17,
          18
        ],
        "ignore_numbered_elements": [],
        "base_markers_to_reference": [
          {
            "number": 1,
            "label": "Exterior entry strip",
            "category": "area",
            "position_hint": "outside the south/front wall, aligned with the main entrance and bicycle parking edge",
            "base_layer_decision": "base_structural_unit",
            "render_role": "not_applicable",
            "top_down_legibility": "not_applicable"
          },
          {
            "number": 2,
            "label": "Entrance threshold zone",
            "category": "area",
            "position_hint": "inside the south/front entrance, between the automatic doors and checkout area",
            "base_layer_decision": "base_structural_unit",
            "render_role": "not_applicable",
            "top_down_legibility": "not_applicable"
          },
          {
            "number": 3,
            "label": "Main sales floor shared zone",
            "category": "area",
            "position_hint": "central open shopping area containing the main aisles",
            "base_layer_decision": "base_structural_unit",
            "render_role": "not_applicable",
            "top_down_legibility": "not_applicable"
          },
          {
            "number": 4,
            "label": "Checkout zone",
            "category": "area",
            "position_hint": "front-left portion of the sales floor near the entrance",
            "base_layer_decision": "base_structural_unit",
            "render_role": "not_applicable",
            "top_down_legibility": "not_applicable"
          },
          {
            "number": 6,
            "label": "Automatic sliding glass entrance",
            "category": "opening",
            "position_hint": "center of the south/front wall connecting exterior strip to threshold zone",
            "base_layer_decision": "base_opening",
            "render_role": "not_applicable",
            "top_down_legibility": "not_applicable"
          },
          {
            "number": 7,
            "label": "Front display windows",
            "category": "opening",
            "position_hint": "south/front wall on both sides of the entrance, drawn as double parallel window lines",
            "base_layer_decision": "base_opening",
            "render_role": "not_applicable",
            "top_down_legibility": "not_applicable"
          },
          {
            "number": 10,
            "label": "Checkout counter row",
            "category": "furniture",
            "position_hint": "front-left checkout zone, parallel counters facing the entrance threshold",
            "base_layer_decision": "base_persistent_fixture",
            "render_role": "not_applicable",
            "top_down_legibility": "not_applicable"
          },
          {
            "number": 11,
            "label": "Left gondola shelf bank",
            "category": "furniture",
            "position_hint": "west/left side of the main sales floor, long north-south shelf row",
            "base_layer_decision": "base_persistent_furniture",
            "render_role": "not_applicable",
            "top_down_legibility": "not_applicable"
          },
          {
            "number": 12,
            "label": "Central gondola shelf bank",
            "category": "furniture",
            "position_hint": "center of the main sales floor, long north-south shelf row",
            "base_layer_decision": "base_persistent_furniture",
            "render_role": "not_applicable",
            "top_down_legibility": "not_applicable"
          },
          {
            "number": 13,
            "label": "Right gondola shelf bank",
            "category": "furniture",
            "position_hint": "east/right side of the main sales floor, long north-south shelf row",
            "base_layer_decision": "base_persistent_furniture",
            "render_role": "not_applicable",
            "top_down_legibility": "not_applicable"
          },
          {
            "number": 14,
            "label": "Perimeter refrigerated cases",
            "category": "prop",
            "position_hint": "east/right wall and part of the rear wall, continuous fixed cooler cases",
            "base_layer_decision": "base_persistent_fixture",
            "render_role": "not_applicable",
            "top_down_legibility": "not_applicable"
          },
          {
            "number": 15,
            "label": "Aisle end display island",
            "category": "furniture",
            "position_hint": "central-front aisle intersection between checkout zone and shelf banks",
            "base_layer_decision": "base_persistent_furniture",
            "render_role": "not_applicable",
            "top_down_legibility": "not_applicable"
          },
          {
            "number": 16,
            "label": "Overhead CCTV camera",
            "category": "prop",
            "position_hint": "high at the southeast/front-right corner, aimed diagonally across the entrance and central aisle",
            "base_layer_decision": "base_persistent_fixture",
            "render_role": "not_applicable",
            "top_down_legibility": "not_applicable"
          },
          {
            "number": 17,
            "label": "Fixed CCTV coverage axis",
            "category": "prop",
            "position_hint": "thin dashed plan line from the front-right CCTV position across the entrance threshold toward the central aisle",
            "base_layer_decision": "base_persistent_fixture",
            "render_role": "not_applicable",
            "top_down_legibility": "not_applicable"
          }
        ],
        "transient_markers_to_describe": [
          {
            "number": 18,
            "label": "Temporary stocking boxes",
            "category": "prop",
            "position_hint": "central aisle beside the central shelf bank, present only during the dusk stocking moment",
            "base_layer_decision": "state_overlay_transient_object",
            "render_role": "not_applicable",
            "top_down_legibility": "not_applicable"
          }
        ],
        "ignored_state_overlay_markers": [],
        "target_unit_marker_numbers": [
          1,
          2,
          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)"
        ]
      },
      "L08B02": {
        "bg_id": "L08B02",
        "fp_id": "fp_mart_sales_floor",
        "use_numbered_elements": [
          1,
          2,
          3,
          4,
          5,
          6,
          7,
          10,
          11,
          12,
          13,
          14,
          15,
          16,
          17
        ],
        "ignore_numbered_elements": [
          18
        ],
        "base_markers_to_reference": [
          {
            "number": 1,
            "label": "Exterior entry strip",
            "category": "area",
            "position_hint": "outside the south/front wall, aligned with the main entrance and bicycle parking edge",
            "base_layer_decision": "base_structural_unit",
            "render_role": "not_applicable",
            "top_down_legibility": "not_applicable"
          },
          {
            "number": 2,
            "label": "Entrance threshold zone",
            "category": "area",
            "position_hint": "inside the south/front entrance, between the automatic doors and checkout area",
            "base_layer_decision": "base_structural_unit",
            "render_role": "not_applicable",
            "top_down_legibility": "not_applicable"
          },
          {
            "number": 3,
            "label": "Main sales floor shared zone",
            "category": "area",
            "position_hint": "central open shopping area containing the main aisles",
            "base_layer_decision": "base_structural_unit",
            "render_role": "not_applicable",
            "top_down_legibility": "not_applicable"
          },
          {
            "number": 4,
            "label": "Checkout zone",
            "category": "area",
            "position_hint": "front-left portion of the sales floor near the entrance",
            "base_layer_decision": "base_structural_unit",
            "render_role": "not_applicable",
            "top_down_legibility": "not_applicable"
          },
          {
            "number": 5,
            "label": "Staff and service zone",
            "category": "area",
            "position_hint": "north/rear edge of the sales floor behind the aisles",
            "base_layer_decision": "base_structural_unit",
            "render_role": "not_applicable",
            "top_down_legibility": "not_applicable"
          },
          {
            "number": 6,
            "label": "Automatic sliding glass entrance",
            "category": "opening",
            "position_hint": "center of the south/front wall connecting exterior strip to threshold zone",
            "base_layer_decision": "base_opening",
            "render_role": "not_applicable",
            "top_down_legibility": "not_applicable"
          },
          {
            "number": 7,
            "label": "Front display windows",
            "category": "opening",
            "position_hint": "south/front wall on both sides of the entrance, drawn as double parallel window lines",
            "base_layer_decision": "base_opening",
            "render_role": "not_applicable",
            "top_down_legibility": "not_applicable"
          },
          {
            "number": 10,
            "label": "Checkout counter row",
            "category": "furniture",
            "position_hint": "front-left checkout zone, parallel counters facing the entrance threshold",
            "base_layer_decision": "base_persistent_fixture",
            "render_role": "not_applicable",
            "top_down_legibility": "not_applicable"
          },
          {
            "number": 11,
            "label": "Left gondola shelf bank",
            "category": "furniture",
            "position_hint": "west/left side of the main sales floor, long north-south shelf row",
            "base_layer_decision": "base_persistent_furniture",
            "render_role": "not_applicable",
            "top_down_legibility": "not_applicable"
          },
          {
            "number": 12,
            "label": "Central gondola shelf bank",
            "category": "furniture",
            "position_hint": "center of the main sales floor, long north-south shelf row",
            "base_layer_decision": "base_persistent_furniture",
            "render_role": "not_applicable",
            "top_down_legibility": "not_applicable"
          },
          {
            "number": 13,
            "label": "Right gondola shelf bank",
            "category": "furniture",
            "position_hint": "east/right side of the main sales floor, long north-south shelf row",
            "base_layer_decision": "base_persistent_furniture",
            "render_role": "not_applicable",
            "top_down_legibility": "not_applicable"
          },
          {
            "number": 14,
            "label": "Perimeter refrigerated cases",
            "category": "prop",
            "position_hint": "east/right wall and part of the rear wall, continuous fixed cooler cases",
            "base_layer_decision": "base_persistent_fixture",
            "render_role": "not_applicable",
            "top_down_legibility": "not_applicable"
          },
          {
            "number": 15,
            "label": "Aisle end display island",
            "category": "furniture",
            "position_hint": "central-front aisle intersection between checkout zone and shelf banks",
            "base_layer_decision": "base_persistent_furniture",
            "render_role": "not_applicable",
            "top_down_legibility": "not_applicable"
          },
          {
            "number": 16,
            "label": "Overhead CCTV camera",
            "category": "prop",
            "position_hint": "high at the southeast/front-right corner, aimed diagonally across the entrance and central aisle",
            "base_layer_decision": "base_persistent_fixture",
            "render_role": "not_applicable",
            "top_down_legibility": "not_applicable"
          },
          {
            "number": 17,
            "label": "Fixed CCTV coverage axis",
            "category": "prop",
            "position_hint": "thin dashed plan line from the front-right CCTV position across the entrance threshold toward the central aisle",
            "base_layer_decision": "base_persistent_fixture",
            "render_role": "not_applicable",
            "top_down_legibility": "not_applicable"
          }
        ],
        "transient_markers_to_describe": [],
        "ignored_state_overlay_markers": [
          {
            "number": 18,
            "label": "Temporary stocking boxes",
            "category": "prop",
            "position_hint": "central aisle beside the central shelf bank, present only during the dusk stocking 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,
          5
        ],
        "dominant_target_unit_marker_number": null,
        "clean_background_expected": true,
        "diagnostics": [
          "multiple base_structural_unit markers in use_numbered_elements ([1, 2, 3, 4, 5]); dominant_target_unit_marker_number left empty (W19B-1 lock — no lexical disambiguation)"
        ]
      },
      "L14B01": {
        "bg_id": "L14B01",
        "fp_id": "fp_security_office",
        "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": "security office room",
            "category": "area",
            "position_hint": "overall rectangular office boundary",
            "base_layer_decision": "base_structural_unit",
            "render_role": "not_applicable",
            "top_down_legibility": "not_applicable"
          },
          {
            "number": 2,
            "label": "staff work zone",
            "category": "area",
            "position_hint": "north and west side of room around the desk and monitors",
            "base_layer_decision": "base_structural_unit",
            "render_role": "not_applicable",
            "top_down_legibility": "not_applicable"
          },
          {
            "number": 3,
            "label": "visitor viewing zone",
            "category": "area",
            "position_hint": "center and south side of room behind staff chair",
            "base_layer_decision": "base_structural_unit",
            "render_role": "not_applicable",
            "top_down_legibility": "not_applicable"
          },
          {
            "number": 4,
            "label": "entry threshold zone",
            "category": "area",
            "position_hint": "southwest corner inside corridor entry",
            "base_layer_decision": "base_structural_unit",
            "render_role": "not_applicable",
            "top_down_legibility": "not_applicable"
          },
          {
            "number": 5,
            "label": "corridor entry door",
            "category": "opening",
            "position_hint": "south wall near southwest corner, hinged inward",
            "base_layer_decision": "base_opening",
            "render_role": "not_applicable",
            "top_down_legibility": "not_applicable"
          },
          {
            "number": 6,
            "label": "interior frosted window",
            "category": "opening",
            "position_hint": "south wall east of entry door, narrow interior office window",
            "base_layer_decision": "base_opening",
            "render_role": "not_applicable",
            "top_down_legibility": "not_applicable"
          },
          {
            "number": 7,
            "label": "security desk",
            "category": "furniture",
            "position_hint": "northwest quadrant, facing visitor viewing zone",
            "base_layer_decision": "base_persistent_furniture",
            "render_role": "not_applicable",
            "top_down_legibility": "not_applicable"
          },
          {
            "number": 8,
            "label": "CCTV monitor bank",
            "category": "prop",
            "position_hint": "north wall above or directly behind security desk",
            "base_layer_decision": "base_persistent_fixture",
            "render_role": "not_applicable",
            "top_down_legibility": "not_applicable"
          },
          {
            "number": 9,
            "label": "staff chair",
            "category": "furniture",
            "position_hint": "behind security desk, between desk and north wall",
            "base_layer_decision": "base_persistent_furniture",
            "render_role": "not_applicable",
            "top_down_legibility": "not_applicable"
          },
          {
            "number": 10,
            "label": "visitor chairs",
            "category": "furniture",
            "position_hint": "center-south visitor viewing zone facing the monitor bank",
            "base_layer_decision": "base_persistent_furniture",
            "render_role": "not_applicable",
            "top_down_legibility": "not_applicable"
          },
          {
            "number": 11,
            "label": "recording equipment cabinet",
            "category": "prop",
            "position_hint": "east wall near northeast corner",
            "base_layer_decision": "base_persistent_fixture",
            "render_role": "not_applicable",
            "top_down_legibility": "not_applicable"
          },
          {
            "number": 12,
            "label": "wall storage cabinet",
            "category": "furniture",
            "position_hint": "east wall near southeast corner",
            "base_layer_decision": "base_persistent_furniture",
            "render_role": "not_applicable",
            "top_down_legibility": "not_applicable"
          }
        ],
        "transient_markers_to_describe": [
          {
            "number": 13,
            "label": "obscured playback area",
            "category": "prop",
            "position_hint": "within the CCTV monitor image, not a physical mark in the room",
            "base_layer_decision": "state_overlay_plot_cue",
            "render_role": "not_applicable",
            "top_down_legibility": "not_applicable"
          }
        ],
        "ignored_state_overlay_markers": [],
        "target_unit_marker_numbers": [
          1,
          2,
          3,
          4
        ],
        "dominant_target_unit_marker_number": null,
        "clean_background_expected": false,
        "diagnostics": [
          "multiple base_structural_unit markers in use_numbered_elements ([1, 2, 3, 4]); dominant_target_unit_marker_number left empty (W19B-1 lock — no lexical disambiguation)"
        ]
      },
      "L12B02": {
        "bg_id": "L12B02",
        "fp_id": "fp_police_office",
        "use_numbered_elements": [
          1,
          2,
          3,
          4,
          5,
          6,
          7,
          8,
          9,
          10,
          11,
          12,
          13,
          14,
          15,
          16,
          20
        ],
        "ignore_numbered_elements": [
          17,
          18,
          19,
          21
        ],
        "base_markers_to_reference": [
          {
            "number": 1,
            "label": "shared duty work zone",
            "category": "area",
            "position_hint": "central majority of the police office room, pale yellow area",
            "base_layer_decision": "base_structural_unit",
            "render_role": "not_applicable",
            "top_down_legibility": "not_applicable"
          },
          {
            "number": 2,
            "label": "entrance threshold zone",
            "category": "area",
            "position_hint": "southwest inside the room by the corridor entrance, pale beige area",
            "base_layer_decision": "base_structural_unit",
            "render_role": "not_applicable",
            "top_down_legibility": "not_applicable"
          },
          {
            "number": 3,
            "label": "records and filing service zone",
            "category": "area",
            "position_hint": "west wall strip with storage and office equipment, pale cyan area",
            "base_layer_decision": "base_structural_unit",
            "render_role": "not_applicable",
            "top_down_legibility": "not_applicable"
          },
          {
            "number": 4,
            "label": "refreshment utility nook",
            "category": "area",
            "position_hint": "northeast corner of the room, pale gray area",
            "base_layer_decision": "base_structural_unit",
            "render_role": "not_applicable",
            "top_down_legibility": "not_applicable"
          },
          {
            "number": 5,
            "label": "main entrance door",
            "category": "opening",
            "position_hint": "southwest wall opening from corridor into entrance threshold zone",
            "base_layer_decision": "base_opening",
            "render_role": "not_applicable",
            "top_down_legibility": "not_applicable"
          },
          {
            "number": 6,
            "label": "north exterior window band",
            "category": "opening",
            "position_hint": "long window group centered along the north wall",
            "base_layer_decision": "base_opening",
            "render_role": "not_applicable",
            "top_down_legibility": "not_applicable"
          },
          {
            "number": 7,
            "label": "staff corridor door",
            "category": "opening",
            "position_hint": "east wall near the north side, opening toward meeting or staff corridor",
            "base_layer_decision": "base_opening",
            "render_role": "not_applicable",
            "top_down_legibility": "not_applicable"
          },
          {
            "number": 8,
            "label": "investigator desk",
            "category": "furniture",
            "position_hint": "southeast quadrant, desk oriented toward the room interior",
            "base_layer_decision": "base_persistent_furniture",
            "render_role": "not_applicable",
            "top_down_legibility": "not_applicable"
          },
          {
            "number": 9,
            "label": "desktop monitor and keyboard",
            "category": "prop",
            "position_hint": "on top of investigator desk, facing the seated position",
            "base_layer_decision": "base_persistent_fixture",
            "render_role": "not_applicable",
            "top_down_legibility": "not_applicable"
          },
          {
            "number": 10,
            "label": "duty desk",
            "category": "furniture",
            "position_hint": "north-central work area, visible from the entrance",
            "base_layer_decision": "base_persistent_furniture",
            "render_role": "not_applicable",
            "top_down_legibility": "not_applicable"
          },
          {
            "number": 11,
            "label": "central paired work desks",
            "category": "furniture",
            "position_hint": "middle of shared duty zone, two rectangular desks grouped back-to-back",
            "base_layer_decision": "base_persistent_furniture",
            "render_role": "not_applicable",
            "top_down_legibility": "not_applicable"
          },
          {
            "number": 12,
            "label": "visitor chair",
            "category": "furniture",
            "position_hint": "beside investigator desk, facing toward the desktop monitor side",
            "base_layer_decision": "base_persistent_furniture",
            "render_role": "not_applicable",
            "top_down_legibility": "not_applicable"
          },
          {
            "number": 13,
            "label": "filing cabinets",
            "category": "furniture",
            "position_hint": "against the west wall inside records and filing service zone",
            "base_layer_decision": "base_persistent_furniture",
            "render_role": "not_applicable",
            "top_down_legibility": "not_applicable"
          },
          {
            "number": 14,
            "label": "printer copier station",
            "category": "prop",
            "position_hint": "west wall near filing cabinets in the records service zone",
            "base_layer_decision": "base_persistent_fixture",
            "render_role": "not_applicable",
            "top_down_legibility": "not_applicable"
          },
          {
            "number": 15,
            "label": "coffee and water counter",
            "category": "prop",
            "position_hint": "northeast refreshment utility nook, against the north or east wall",
            "base_layer_decision": "base_persistent_fixture",
            "render_role": "not_applicable",
            "top_down_legibility": "not_applicable"
          },
          {
            "number": 16,
            "label": "wall notice board",
            "category": "prop",
            "position_hint": "south wall near the central work area, above desk height in background views",
            "base_layer_decision": "base_persistent_fixture",
            "render_role": "not_applicable",
            "top_down_legibility": "not_applicable"
          }
        ],
        "transient_markers_to_describe": [
          {
            "number": 20,
            "label": "visitor smartphone showing saved number",
            "category": "prop",
            "position_hint": "temporary handheld phone cue near the duty desk or investigator desk in the night office state; not drawn on base floor plan",
            "base_layer_decision": "state_overlay_transient_object",
            "render_role": "not_applicable",
            "top_down_legibility": "not_applicable"
          }
        ],
        "ignored_state_overlay_markers": [
          {
            "number": 17,
            "label": "case photo spread on desk",
            "category": "prop",
            "position_hint": "temporarily spread across investigator desk surface in the day office state; not drawn on base floor plan",
            "base_layer_decision": "state_overlay_plot_cue",
            "render_role": "not_applicable",
            "top_down_legibility": "not_applicable"
          },
          {
            "number": 18,
            "label": "missing report and call request papers",
            "category": "prop",
            "position_hint": "temporarily placed on investigator desk in the day office state; not drawn on base floor plan",
            "base_layer_decision": "state_overlay_plot_cue",
            "render_role": "not_applicable",
            "top_down_legibility": "not_applicable"
          },
          {
            "number": 19,
            "label": "GPS last-location result on monitor",
            "category": "prop",
            "position_hint": "temporary screen content on desktop monitor in the day office state; not drawn on base floor plan",
            "base_layer_decision": "state_overlay_plot_cue",
            "render_role": "not_applicable",
            "top_down_legibility": "not_applicable"
          },
          {
            "number": 21,
            "label": "coordinate note and pencil",
            "category": "prop",
            "position_hint": "temporary note-taking cue near investigator desk after the monitor result appears in the day office state; not drawn on base floor plan",
            "base_layer_decision": "state_overlay_transient_object",
            "render_role": "not_applicable",
            "top_down_legibility": "not_applicable"
          }
        ],
        "target_unit_marker_numbers": [
          1,
          2,
          3,
          4
        ],
        "dominant_target_unit_marker_number": null,
        "clean_background_expected": 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)"
        ]
      },
      "L12B01": {
        "bg_id": "L12B01",
        "fp_id": "fp_police_office",
        "use_numbered_elements": [
          1,
          2,
          3,
          4,
          5,
          6,
          7,
          8,
          9,
          10,
          11,
          12,
          13,
          14,
          15,
          16,
          17,
          18,
          19,
          21
        ],
        "ignore_numbered_elements": [
          20
        ],
        "base_markers_to_reference": [
          {
            "number": 1,
            "label": "shared duty work zone",
            "category": "area",
            "position_hint": "central majority of the police office room, pale yellow area",
            "base_layer_decision": "base_structural_unit",
            "render_role": "not_applicable",
            "top_down_legibility": "not_applicable"
          },
          {
            "number": 2,
            "label": "entrance threshold zone",
            "category": "area",
            "position_hint": "southwest inside the room by the corridor entrance, pale beige area",
            "base_layer_decision": "base_structural_unit",
            "render_role": "not_applicable",
            "top_down_legibility": "not_applicable"
          },
          {
            "number": 3,
            "label": "records and filing service zone",
            "category": "area",
            "position_hint": "west wall strip with storage and office equipment, pale cyan area",
            "base_layer_decision": "base_structural_unit",
            "render_role": "not_applicable",
            "top_down_legibility": "not_applicable"
          },
          {
            "number": 4,
            "label": "refreshment utility nook",
            "category": "area",
            "position_hint": "northeast corner of the room, pale gray area",
            "base_layer_decision": "base_structural_unit",
            "render_role": "not_applicable",
            "top_down_legibility": "not_applicable"
          },
          {
            "number": 5,
            "label": "main entrance door",
            "category": "opening",
            "position_hint": "southwest wall opening from corridor into entrance threshold zone",
            "base_layer_decision": "base_opening",
            "render_role": "not_applicable",
            "top_down_legibility": "not_applicable"
          },
          {
            "number": 6,
            "label": "north exterior window band",
            "category": "opening",
            "position_hint": "long window group centered along the north wall",
            "base_layer_decision": "base_opening",
            "render_role": "not_applicable",
            "top_down_legibility": "not_applicable"
          },
          {
            "number": 7,
            "label": "staff corridor door",
            "category": "opening",
            "position_hint": "east wall near the north side, opening toward meeting or staff corridor",
            "base_layer_decision": "base_opening",
            "render_role": "not_applicable",
            "top_down_legibility": "not_applicable"
          },
          {
            "number": 8,
            "label": "investigator desk",
            "category": "furniture",
            "position_hint": "southeast quadrant, desk oriented toward the room interior",
            "base_layer_decision": "base_persistent_furniture",
            "render_role": "not_applicable",
            "top_down_legibility": "not_applicable"
          },
          {
            "number": 9,
            "label": "desktop monitor and keyboard",
            "category": "prop",
            "position_hint": "on top of investigator desk, facing the seated position",
            "base_layer_decision": "base_persistent_fixture",
            "render_role": "not_applicable",
            "top_down_legibility": "not_applicable"
          },
          {
            "number": 10,
            "label": "duty desk",
            "category": "furniture",
            "position_hint": "north-central work area, visible from the entrance",
            "base_layer_decision": "base_persistent_furniture",
            "render_role": "not_applicable",
            "top_down_legibility": "not_applicable"
          },
          {
            "number": 11,
            "label": "central paired work desks",
            "category": "furniture",
            "position_hint": "middle of shared duty zone, two rectangular desks grouped back-to-back",
            "base_layer_decision": "base_persistent_furniture",
            "render_role": "not_applicable",
            "top_down_legibility": "not_applicable"
          },
          {
            "number": 12,
            "label": "visitor chair",
            "category": "furniture",
            "position_hint": "beside investigator desk, facing toward the desktop monitor side",
            "base_layer_decision": "base_persistent_furniture",
            "render_role": "not_applicable",
            "top_down_legibility": "not_applicable"
          },
          {
            "number": 13,
            "label": "filing cabinets",
            "category": "furniture",
            "position_hint": "against the west wall inside records and filing service zone",
            "base_layer_decision": "base_persistent_furniture",
            "render_role": "not_applicable",
            "top_down_legibility": "not_applicable"
          },
          {
            "number": 14,
            "label": "printer copier station",
            "category": "prop",
            "position_hint": "west wall near filing cabinets in the records service zone",
            "base_layer_decision": "base_persistent_fixture",
            "render_role": "not_applicable",
            "top_down_legibility": "not_applicable"
          },
          {
            "number": 15,
            "label": "coffee and water counter",
            "category": "prop",
            "position_hint": "northeast refreshment utility nook, against the north or east wall",
            "base_layer_decision": "base_persistent_fixture",
            "render_role": "not_applicable",
            "top_down_legibility": "not_applicable"
          },
          {
            "number": 16,
            "label": "wall notice board",
            "category": "prop",
            "position_hint": "south wall near the central work area, above desk height in background views",
            "base_layer_decision": "base_persistent_fixture",
            "render_role": "not_applicable",
            "top_down_legibility": "not_applicable"
          }
        ],
        "transient_markers_to_describe": [
          {
            "number": 17,
            "label": "case photo spread on desk",
            "category": "prop",
            "position_hint": "temporarily spread across investigator desk surface in the day office state; not drawn on base floor plan",
            "base_layer_decision": "state_overlay_plot_cue",
            "render_role": "not_applicable",
            "top_down_legibility": "not_applicable"
          },
          {
            "number": 18,
            "label": "missing report and call request papers",
            "category": "prop",
            "position_hint": "temporarily placed on investigator desk in the day office state; not drawn on base floor plan",
            "base_layer_decision": "state_overlay_plot_cue",
            "render_role": "not_applicable",
            "top_down_legibility": "not_applicable"
          },
          {
            "number": 19,
            "label": "GPS last-location result on monitor",
            "category": "prop",
            "position_hint": "temporary screen content on desktop monitor in the day office state; not drawn on base floor plan",
            "base_layer_decision": "state_overlay_plot_cue",
            "render_role": "not_applicable",
            "top_down_legibility": "not_applicable"
          },
          {
            "number": 21,
            "label": "coordinate note and pencil",
            "category": "prop",
            "position_hint": "temporary note-taking cue near investigator desk after the monitor result appears in the day office state; not drawn on base floor plan",
            "base_layer_decision": "state_overlay_transient_object",
            "render_role": "not_applicable",
            "top_down_legibility": "not_applicable"
          }
        ],
        "ignored_state_overlay_markers": [
          {
            "number": 20,
            "label": "visitor smartphone showing saved number",
            "category": "prop",
            "position_hint": "temporary handheld phone cue near the duty desk or investigator desk in the night office state; not drawn on base floor plan",
            "base_layer_decision": "state_overlay_transient_object",
            "render_role": "not_applicable",
            "top_down_legibility": "not_applicable"
          }
        ],
        "target_unit_marker_numbers": [
          1,
          2,
          3,
          4
        ],
        "dominant_target_unit_marker_number": null,
        "clean_background_expected": 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_station_front",
        "use_numbered_elements": [
          1,
          2,
          3,
          4,
          5,
          6,
          7,
          8,
          9
        ],
        "ignore_numbered_elements": [],
        "base_markers_to_reference": [
          {
            "number": 1,
            "label": "front apron shared zone",
            "category": "area",
            "position_hint": "central paved apron between building facade and sidewalk",
            "base_layer_decision": "base_structural_unit",
            "render_role": "not_applicable",
            "top_down_legibility": "not_applicable"
          },
          {
            "number": 2,
            "label": "entrance threshold zone",
            "category": "area",
            "position_hint": "north side directly outside the main entrance",
            "base_layer_decision": "base_structural_unit",
            "render_role": "not_applicable",
            "top_down_legibility": "not_applicable"
          },
          {
            "number": 3,
            "label": "street-side exit and curb zone",
            "category": "area",
            "position_hint": "south edge of plan along the sidewalk and street exit path",
            "base_layer_decision": "base_structural_unit",
            "render_role": "not_applicable",
            "top_down_legibility": "not_applicable"
          },
          {
            "number": 4,
            "label": "main glass entrance doors",
            "category": "opening",
            "position_hint": "north wall center of the station facade, opening onto the threshold zone",
            "base_layer_decision": "base_opening",
            "render_role": "not_applicable",
            "top_down_legibility": "not_applicable"
          },
          {
            "number": 5,
            "label": "front facade windows",
            "category": "opening",
            "position_hint": "north wall, flanking the main entrance doors",
            "base_layer_decision": "base_opening",
            "render_role": "not_applicable",
            "top_down_legibility": "not_applicable"
          },
          {
            "number": 6,
            "label": "fixed bicycle parking rack",
            "category": "prop",
            "position_hint": "east side of front apron beside the threshold path",
            "base_layer_decision": "base_persistent_fixture",
            "render_role": "not_applicable",
            "top_down_legibility": "not_applicable"
          },
          {
            "number": 7,
            "label": "exterior sign or notice panel",
            "category": "prop",
            "position_hint": "north facade near the entrance doors",
            "base_layer_decision": "base_persistent_fixture",
            "render_role": "not_applicable",
            "top_down_legibility": "not_applicable"
          },
          {
            "number": 9,
            "label": "curb bollards",
            "category": "prop",
            "position_hint": "south edge between the apron and the sidewalk street exit",
            "base_layer_decision": "base_persistent_fixture",
            "render_role": "not_applicable",
            "top_down_legibility": "not_applicable"
          }
        ],
        "transient_markers_to_describe": [
          {
            "number": 8,
            "label": "parked bicycle ready to ride",
            "category": "prop",
            "position_hint": "beside number 6, angled toward the street-side exit path",
            "base_layer_decision": "state_overlay_transient_object",
            "render_role": "not_applicable",
            "top_down_legibility": "not_applicable"
          }
        ],
        "ignored_state_overlay_markers": [],
        "target_unit_marker_numbers": [
          1,
          2,
          3
        ],
        "dominant_target_unit_marker_number": null,
        "clean_background_expected": false,
        "diagnostics": [
          "multiple base_structural_unit markers in use_numbered_elements ([1, 2, 3]); dominant_target_unit_marker_number left empty (W19B-1 lock — no lexical disambiguation)"
        ]
      },
      "L16B02": {
        "bg_id": "L16B02",
        "fp_id": "fp_foggy_port_rocks",
        "use_numbered_elements": [
          1,
          2,
          3,
          4,
          5,
          6,
          7,
          8,
          9,
          10,
          13,
          14
        ],
        "ignore_numbered_elements": [
          11,
          12
        ],
        "base_markers_to_reference": [
          {
            "number": 1,
            "label": "tidal rock outcrop",
            "category": "area",
            "position_hint": "southwest side, irregular rock area facing the water",
            "base_layer_decision": "base_structural_unit",
            "render_role": "not_applicable",
            "top_down_legibility": "not_applicable"
          },
          {
            "number": 2,
            "label": "concrete quay walkway",
            "category": "area",
            "position_hint": "northwest and north edge, narrow hard walking strip above the water",
            "base_layer_decision": "base_structural_unit",
            "render_role": "not_applicable",
            "top_down_legibility": "not_applicable"
          },
          {
            "number": 3,
            "label": "harbor water basin",
            "category": "area",
            "position_hint": "east and south half of plan, open water beside rocks and quay",
            "base_layer_decision": "base_structural_unit",
            "render_role": "not_applicable",
            "top_down_legibility": "not_applicable"
          },
          {
            "number": 4,
            "label": "mooring edge strip",
            "category": "area",
            "position_hint": "straight threshold strip between number 2 and number 3",
            "base_layer_decision": "base_structural_unit",
            "render_role": "not_applicable",
            "top_down_legibility": "not_applicable"
          },
          {
            "number": 5,
            "label": "landward approach path",
            "category": "area",
            "position_hint": "northwest entry path leading onto the quay and rocks",
            "base_layer_decision": "base_structural_unit",
            "render_role": "not_applicable",
            "top_down_legibility": "not_applicable"
          },
          {
            "number": 6,
            "label": "open water approach channel",
            "category": "opening",
            "position_hint": "east edge of the water basin, clear boat entry route from offshore",
            "base_layer_decision": "base_opening",
            "render_role": "not_applicable",
            "top_down_legibility": "not_applicable"
          },
          {
            "number": 7,
            "label": "fixed mooring bollard",
            "category": "prop",
            "position_hint": "on the mooring edge near the central quay corner",
            "base_layer_decision": "base_persistent_fixture",
            "render_role": "not_applicable",
            "top_down_legibility": "not_applicable"
          },
          {
            "number": 8,
            "label": "fixed mooring ring",
            "category": "prop",
            "position_hint": "low on the seawall near the rocky outcrop side of the mooring edge",
            "base_layer_decision": "base_persistent_fixture",
            "render_role": "not_applicable",
            "top_down_legibility": "not_applicable"
          },
          {
            "number": 9,
            "label": "quay ladder",
            "category": "prop",
            "position_hint": "set into the quay wall at the water edge, south of the bollard",
            "base_layer_decision": "base_persistent_fixture",
            "render_role": "not_applicable",
            "top_down_legibility": "not_applicable"
          },
          {
            "number": 10,
            "label": "low curb guard",
            "category": "prop",
            "position_hint": "along the landward side of the concrete quay walkway",
            "base_layer_decision": "base_persistent_fixture",
            "render_role": "not_applicable",
            "top_down_legibility": "not_applicable"
          }
        ],
        "transient_markers_to_describe": [
          {
            "number": 13,
            "label": "dense fog over offshore view",
            "category": "prop",
            "position_hint": "over the open water approach channel and far water basin",
            "base_layer_decision": "state_overlay_plot_cue",
            "render_role": "not_applicable",
            "top_down_legibility": "not_applicable"
          },
          {
            "number": 14,
            "label": "rain-wet rocks and quay surface",
            "category": "prop",
            "position_hint": "across the tidal rock outcrop and concrete quay walkway",
            "base_layer_decision": "state_overlay_plot_cue",
            "render_role": "not_applicable",
            "top_down_legibility": "not_applicable"
          }
        ],
        "ignored_state_overlay_markers": [
          {
            "number": 11,
            "label": "arrived small fishing boat",
            "category": "prop",
            "position_hint": "in the harbor water basin beside the mooring edge, bow angled toward the quay",
            "base_layer_decision": "state_overlay_transient_object",
            "render_role": "not_applicable",
            "top_down_legibility": "not_applicable"
          },
          {
            "number": 12,
            "label": "loose mooring line being secured",
            "category": "prop",
            "position_hint": "between the arrived boat and the fixed mooring bollard",
            "base_layer_decision": "state_overlay_transient_object",
            "render_role": "not_applicable",
            "top_down_legibility": "not_applicable"
          }
        ],
        "target_unit_marker_numbers": [
          1,
          2,
          3,
          4,
          5
        ],
        "dominant_target_unit_marker_number": null,
        "clean_background_expected": false,
        "diagnostics": [
          "multiple base_structural_unit markers in use_numbered_elements ([1, 2, 3, 4, 5]); dominant_target_unit_marker_number left empty (W19B-1 lock — no lexical disambiguation)"
        ]
      },
      "L16B01": {
        "bg_id": "L16B01",
        "fp_id": "fp_foggy_port_rocks",
        "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": "tidal rock outcrop",
            "category": "area",
            "position_hint": "southwest side, irregular rock area facing the water",
            "base_layer_decision": "base_structural_unit",
            "render_role": "not_applicable",
            "top_down_legibility": "not_applicable"
          },
          {
            "number": 2,
            "label": "concrete quay walkway",
            "category": "area",
            "position_hint": "northwest and north edge, narrow hard walking strip above the water",
            "base_layer_decision": "base_structural_unit",
            "render_role": "not_applicable",
            "top_down_legibility": "not_applicable"
          },
          {
            "number": 3,
            "label": "harbor water basin",
            "category": "area",
            "position_hint": "east and south half of plan, open water beside rocks and quay",
            "base_layer_decision": "base_structural_unit",
            "render_role": "not_applicable",
            "top_down_legibility": "not_applicable"
          },
          {
            "number": 4,
            "label": "mooring edge strip",
            "category": "area",
            "position_hint": "straight threshold strip between number 2 and number 3",
            "base_layer_decision": "base_structural_unit",
            "render_role": "not_applicable",
            "top_down_legibility": "not_applicable"
          },
          {
            "number": 5,
            "label": "landward approach path",
            "category": "area",
            "position_hint": "northwest entry path leading onto the quay and rocks",
            "base_layer_decision": "base_structural_unit",
            "render_role": "not_applicable",
            "top_down_legibility": "not_applicable"
          },
          {
            "number": 6,
            "label": "open water approach channel",
            "category": "opening",
            "position_hint": "east edge of the water basin, clear boat entry route from offshore",
            "base_layer_decision": "base_opening",
            "render_role": "not_applicable",
            "top_down_legibility": "not_applicable"
          },
          {
            "number": 7,
            "label": "fixed mooring bollard",
            "category": "prop",
            "position_hint": "on the mooring edge near the central quay corner",
            "base_layer_decision": "base_persistent_fixture",
            "render_role": "not_applicable",
            "top_down_legibility": "not_applicable"
          },
          {
            "number": 8,
            "label": "fixed mooring ring",
            "category": "prop",
            "position_hint": "low on the seawall near the rocky outcrop side of the mooring edge",
            "base_layer_decision": "base_persistent_fixture",
            "render_role": "not_applicable",
            "top_down_legibility": "not_applicable"
          },
          {
            "number": 9,
            "label": "quay ladder",
            "category": "prop",
            "position_hint": "set into the quay wall at the water edge, south of the bollard",
            "base_layer_decision": "base_persistent_fixture",
            "render_role": "not_applicable",
            "top_down_legibility": "not_applicable"
          },
          {
            "number": 10,
            "label": "low curb guard",
            "category": "prop",
            "position_hint": "along the landward side of the concrete quay walkway",
            "base_layer_decision": "base_persistent_fixture",
            "render_role": "not_applicable",
            "top_down_legibility": "not_applicable"
          }
        ],
        "transient_markers_to_describe": [
          {
            "number": 11,
            "label": "arrived small fishing boat",
            "category": "prop",
            "position_hint": "in the harbor water basin beside the mooring edge, bow angled toward the quay",
            "base_layer_decision": "state_overlay_transient_object",
            "render_role": "not_applicable",
            "top_down_legibility": "not_applicable"
          },
          {
            "number": 12,
            "label": "loose mooring line being secured",
            "category": "prop",
            "position_hint": "between the arrived boat and the fixed mooring bollard",
            "base_layer_decision": "state_overlay_transient_object",
            "render_role": "not_applicable",
            "top_down_legibility": "not_applicable"
          },
          {
            "number": 13,
            "label": "dense fog over offshore view",
            "category": "prop",
            "position_hint": "over the open water approach channel and far water basin",
            "base_layer_decision": "state_overlay_plot_cue",
            "render_role": "not_applicable",
            "top_down_legibility": "not_applicable"
          },
          {
            "number": 14,
            "label": "rain-wet rocks and quay surface",
            "category": "prop",
            "position_hint": "across the tidal rock outcrop and concrete quay walkway",
            "base_layer_decision": "state_overlay_plot_cue",
            "render_role": "not_applicable",
            "top_down_legibility": "not_applicable"
          }
        ],
        "ignored_state_overlay_markers": [],
        "target_unit_marker_numbers": [
          1,
          2,
          3,
          4,
          5
        ],
        "dominant_target_unit_marker_number": null,
        "clean_background_expected": false,
        "diagnostics": [
          "multiple base_structural_unit markers in use_numbered_elements ([1, 2, 3, 4, 5]); dominant_target_unit_marker_number left empty (W19B-1 lock — no lexical disambiguation)"
        ]
      },
      "L17B01": {
        "bg_id": "L17B01",
        "fp_id": "fp_small_fishing_boat_deck",
        "use_numbered_elements": [
          1,
          2,
          3,
          4,
          5,
          6,
          7,
          8,
          9,
          10,
          11,
          12,
          13,
          14,
          15,
          16,
          17,
          18,
          19
        ],
        "ignore_numbered_elements": [],
        "base_markers_to_reference": [
          {
            "number": 1,
            "label": "open working deck",
            "category": "area",
            "position_hint": "central and aft open deck area, south of bow and in front of wheelhouse access path",
            "base_layer_decision": "base_structural_unit",
            "render_role": "not_applicable",
            "top_down_legibility": "not_applicable"
          },
          {
            "number": 2,
            "label": "bow foredeck",
            "category": "area",
            "position_hint": "north pointed bow area inside forward rail",
            "base_layer_decision": "base_structural_unit",
            "render_role": "not_applicable",
            "top_down_legibility": "not_applicable"
          },
          {
            "number": 3,
            "label": "wheelhouse exterior block",
            "category": "area",
            "position_hint": "aft-of-center cabin structure on deck, slightly toward stern",
            "base_layer_decision": "base_structural_unit",
            "render_role": "not_applicable",
            "top_down_legibility": "not_applicable"
          },
          {
            "number": 4,
            "label": "starboard rail",
            "category": "prop",
            "position_hint": "east side continuous rail along hull edge",
            "base_layer_decision": "base_persistent_fixture",
            "render_role": "not_applicable",
            "top_down_legibility": "not_applicable"
          },
          {
            "number": 5,
            "label": "port rail",
            "category": "prop",
            "position_hint": "west side continuous rail along hull edge",
            "base_layer_decision": "base_persistent_fixture",
            "render_role": "not_applicable",
            "top_down_legibility": "not_applicable"
          },
          {
            "number": 6,
            "label": "bow rail",
            "category": "prop",
            "position_hint": "curved north bow rail around foredeck",
            "base_layer_decision": "base_persistent_fixture",
            "render_role": "not_applicable",
            "top_down_legibility": "not_applicable"
          },
          {
            "number": 7,
            "label": "stern transom rail",
            "category": "prop",
            "position_hint": "south stern edge of boat hull",
            "base_layer_decision": "base_persistent_fixture",
            "render_role": "not_applicable",
            "top_down_legibility": "not_applicable"
          },
          {
            "number": 8,
            "label": "wheelhouse doorway",
            "category": "opening",
            "position_hint": "aft-facing or deck-facing doorway on wheelhouse exterior, opening onto working deck",
            "base_layer_decision": "base_opening",
            "render_role": "not_applicable",
            "top_down_legibility": "not_applicable"
          },
          {
            "number": 9,
            "label": "front wheelhouse windows",
            "category": "opening",
            "position_hint": "north face of wheelhouse looking toward bow",
            "base_layer_decision": "base_opening",
            "render_role": "not_applicable",
            "top_down_legibility": "not_applicable"
          },
          {
            "number": 10,
            "label": "side wheelhouse windows",
            "category": "opening",
            "position_hint": "east and west sides of wheelhouse exterior",
            "base_layer_decision": "base_opening",
            "render_role": "not_applicable",
            "top_down_legibility": "not_applicable"
          },
          {
            "number": 11,
            "label": "low deck hatch",
            "category": "prop",
            "position_hint": "center of open working deck, flush rectangular hatch",
            "base_layer_decision": "base_persistent_fixture",
            "render_role": "not_applicable",
            "top_down_legibility": "not_applicable"
          },
          {
            "number": 12,
            "label": "port mooring cleat",
            "category": "prop",
            "position_hint": "west rail edge near stern quarter",
            "base_layer_decision": "base_persistent_fixture",
            "render_role": "not_applicable",
            "top_down_legibility": "not_applicable"
          },
          {
            "number": 13,
            "label": "starboard mooring cleat",
            "category": "prop",
            "position_hint": "east rail edge near bow quarter",
            "base_layer_decision": "base_persistent_fixture",
            "render_role": "not_applicable",
            "top_down_legibility": "not_applicable"
          },
          {
            "number": 14,
            "label": "low storage bench or fish box",
            "category": "furniture",
            "position_hint": "against port side of open deck, usable as a seated spot",
            "base_layer_decision": "base_persistent_furniture",
            "render_role": "not_applicable",
            "top_down_legibility": "not_applicable"
          },
          {
            "number": 15,
            "label": "narrow side passage threshold",
            "category": "area",
            "position_hint": "thin walkway wrapping beside the wheelhouse toward bow",
            "base_layer_decision": "base_structural_unit",
            "render_role": "not_applicable",
            "top_down_legibility": "not_applicable"
          },
          {
            "number": 16,
            "label": "surrounding sea sightline zone",
            "category": "area",
            "position_hint": "flat exterior band outside the boat hull on all sides",
            "base_layer_decision": "base_structural_unit",
            "render_role": "not_applicable",
            "top_down_legibility": "not_applicable"
          }
        ],
        "transient_markers_to_describe": [
          {
            "number": 17,
            "label": "folded paper map being shown",
            "category": "prop",
            "position_hint": "temporary loose object held or placed over the open working deck near number 1",
            "base_layer_decision": "state_overlay_transient_object",
            "render_role": "not_applicable",
            "top_down_legibility": "not_applicable"
          },
          {
            "number": 18,
            "label": "old photo being shown",
            "category": "prop",
            "position_hint": "temporary loose object near the confrontation position on the open working deck near number 1",
            "base_layer_decision": "state_overlay_transient_object",
            "render_role": "not_applicable",
            "top_down_legibility": "not_applicable"
          },
          {
            "number": 19,
            "label": "sudden movement path toward wheelhouse",
            "category": "prop",
            "position_hint": "overlay cue from open working deck number 1 toward wheelhouse doorway number 8",
            "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,
          15,
          16
        ],
        "dominant_target_unit_marker_number": null,
        "clean_background_expected": false,
        "diagnostics": [
          "multiple base_structural_unit markers in use_numbered_elements ([1, 2, 3, 15, 16]); dominant_target_unit_marker_number left empty (W19B-1 lock — no lexical disambiguation)"
        ]
      },
      "L18B01": {
        "bg_id": "L18B01",
        "fp_id": "fp_boat_wheelhouse_interior",
        "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": "cramped wheelhouse standing area",
            "category": "area",
            "position_hint": "central interior of the wheelhouse, narrow shared zone between aft entrance and forward console",
            "base_layer_decision": "base_structural_unit",
            "render_role": "not_applicable",
            "top_down_legibility": "not_applicable"
          },
          {
            "number": 2,
            "label": "aft wheelhouse entrance door",
            "category": "opening",
            "position_hint": "south wall, slightly starboard of center, opening inward from deck into wheelhouse",
            "base_layer_decision": "base_opening",
            "render_role": "not_applicable",
            "top_down_legibility": "not_applicable"
          },
          {
            "number": 3,
            "label": "front windshield opening",
            "category": "opening",
            "position_hint": "north wall, wide window band above the helm console",
            "base_layer_decision": "base_opening",
            "render_role": "not_applicable",
            "top_down_legibility": "not_applicable"
          },
          {
            "number": 4,
            "label": "port side window",
            "category": "opening",
            "position_hint": "west wall, long narrow side window beside the standing area",
            "base_layer_decision": "base_opening",
            "render_role": "not_applicable",
            "top_down_legibility": "not_applicable"
          },
          {
            "number": 5,
            "label": "starboard side window",
            "category": "opening",
            "position_hint": "east wall, long narrow side window beside the helm and storage side",
            "base_layer_decision": "base_opening",
            "render_role": "not_applicable",
            "top_down_legibility": "not_applicable"
          },
          {
            "number": 6,
            "label": "helm console with wheel and throttle",
            "category": "prop",
            "position_hint": "north interior, centered below the front windshield",
            "base_layer_decision": "base_persistent_fixture",
            "render_role": "not_applicable",
            "top_down_legibility": "not_applicable"
          },
          {
            "number": 7,
            "label": "instrument and navigation panel",
            "category": "prop",
            "position_hint": "north wall and upper face of the helm console, adjacent to the steering wheel",
            "base_layer_decision": "base_persistent_fixture",
            "render_role": "not_applicable",
            "top_down_legibility": "not_applicable"
          },
          {
            "number": 8,
            "label": "small chart shelf",
            "category": "prop",
            "position_hint": "west side of the helm console, narrow fixed shelf or ledge for maps and papers",
            "base_layer_decision": "base_persistent_fixture",
            "render_role": "not_applicable",
            "top_down_legibility": "not_applicable"
          },
          {
            "number": 9,
            "label": "narrow storage bench",
            "category": "furniture",
            "position_hint": "east wall, aft half of the wheelhouse, leaving only a tight standing aisle",
            "base_layer_decision": "base_persistent_furniture",
            "render_role": "not_applicable",
            "top_down_legibility": "not_applicable"
          },
          {
            "number": 10,
            "label": "engine access floor hatch",
            "category": "prop",
            "position_hint": "floor center of the standing area, just aft of the helm console",
            "base_layer_decision": "base_persistent_fixture",
            "render_role": "not_applicable",
            "top_down_legibility": "not_applicable"
          }
        ],
        "transient_markers_to_describe": [
          {
            "number": 11,
            "label": "handheld photo clue",
            "category": "prop",
            "position_hint": "not on base diagram; transient object held or presented near the central standing area during the confrontation",
            "base_layer_decision": "state_overlay_transient_object",
            "render_role": "not_applicable",
            "top_down_legibility": "not_applicable"
          },
          {
            "number": 12,
            "label": "many circular wall markings",
            "category": "prop",
            "position_hint": "not on base diagram; overlay cue distributed across visible wheelhouse walls and surfaces behind the helm figure",
            "base_layer_decision": "state_overlay_plot_cue",
            "render_role": "not_applicable",
            "top_down_legibility": "not_applicable"
          },
          {
            "number": 13,
            "label": "newly noticed red circle",
            "category": "prop",
            "position_hint": "not on base diagram; overlay cue on or near a visible wall or control-side surface, distinct from the other circular marks",
            "base_layer_decision": "state_overlay_plot_cue",
            "render_role": "not_applicable",
            "top_down_legibility": "not_applicable"
          }
        ],
        "ignored_state_overlay_markers": [],
        "target_unit_marker_numbers": [
          1
        ],
        "dominant_target_unit_marker_number": 1,
        "clean_background_expected": false,
        "diagnostics": []
      }
    }
  },
  "step_id": "floor_plan_overlay_payload",
  "run_id": "5e857ed0-9b56-4486-ac10-c9efbaa5f738",
  "resolved_model": "gpt",
  "updated_at": "2026-06-19T03:08:17.250370+00:00",
  "project_config_snapshot": {}
}