{
  "status": "completed",
  "applicable_count": 1,
  "completed_count": 1,
  "failed_count": 0,
  "schema_version": 1,
  "config_hash": "441d5bef641a0569",
  "data": {
    "overlays": {
      "L04B02": {
        "bg_id": "L04B02",
        "fp_id": "fp_l04_rooftop_exterior",
        "use_numbered_elements": [
          1,
          2,
          3,
          4,
          5,
          6,
          7,
          8,
          9,
          10,
          11,
          12,
          13
        ],
        "ignore_numbered_elements": [
          14,
          15,
          16,
          17,
          18,
          19
        ],
        "base_markers_to_reference": [
          {
            "number": 1,
            "label": "open rooftop deck",
            "category": "area",
            "position_hint": "central and western portion of the roof inside the parapets",
            "base_layer_decision": "base_structural_unit",
            "render_role": "not_applicable",
            "top_down_legibility": "not_applicable"
          },
          {
            "number": 2,
            "label": "compact rooftop room",
            "category": "area",
            "position_hint": "northeast portion of the roof",
            "base_layer_decision": "base_structural_unit",
            "render_role": "not_applicable",
            "top_down_legibility": "not_applicable"
          },
          {
            "number": 3,
            "label": "entrance threshold",
            "category": "area",
            "position_hint": "immediately south of the rooftop-room entrance",
            "base_layer_decision": "base_structural_unit",
            "render_role": "not_applicable",
            "top_down_legibility": "not_applicable"
          },
          {
            "number": 4,
            "label": "roof stair access opening",
            "category": "opening",
            "position_hint": "southwest corner of the rooftop deck",
            "base_layer_decision": "base_opening",
            "render_role": "not_applicable",
            "top_down_legibility": "not_applicable"
          },
          {
            "number": 5,
            "label": "iron entrance door",
            "category": "opening",
            "position_hint": "south wall of the rooftop room, near its southeast end",
            "base_layer_decision": "base_opening",
            "render_role": "not_applicable",
            "top_down_legibility": "not_applicable"
          },
          {
            "number": 6,
            "label": "small living-room window",
            "category": "opening",
            "position_hint": "west wall of the rooftop room, facing the open deck",
            "base_layer_decision": "base_opening",
            "render_role": "not_applicable",
            "top_down_legibility": "not_applicable"
          },
          {
            "number": 7,
            "label": "cylindrical water tank",
            "category": "prop",
            "position_hint": "northwest side of the rooftop room",
            "base_layer_decision": "base_persistent_fixture",
            "render_role": "not_applicable",
            "top_down_legibility": "not_applicable"
          },
          {
            "number": 8,
            "label": "raised drying platform",
            "category": "furniture",
            "position_hint": "west-central rooftop deck beneath the clothesline",
            "base_layer_decision": "base_persistent_furniture",
            "render_role": "not_applicable",
            "top_down_legibility": "not_applicable"
          },
          {
            "number": 9,
            "label": "fixed clothesline",
            "category": "prop",
            "position_hint": "single east-west run across the central rooftop deck",
            "base_layer_decision": "base_persistent_fixture",
            "render_role": "not_applicable",
            "top_down_legibility": "not_applicable"
          },
          {
            "number": 10,
            "label": "north parapet run",
            "category": "area",
            "position_hint": "continuous north edge of the roof",
            "base_layer_decision": "base_structural_unit",
            "render_role": "not_applicable",
            "top_down_legibility": "not_applicable"
          },
          {
            "number": 11,
            "label": "east parapet run",
            "category": "area",
            "position_hint": "continuous east edge of the roof",
            "base_layer_decision": "base_structural_unit",
            "render_role": "not_applicable",
            "top_down_legibility": "not_applicable"
          },
          {
            "number": 12,
            "label": "south parapet run",
            "category": "area",
            "position_hint": "continuous south edge of the roof",
            "base_layer_decision": "base_structural_unit",
            "render_role": "not_applicable",
            "top_down_legibility": "not_applicable"
          },
          {
            "number": 13,
            "label": "west parapet run",
            "category": "area",
            "position_hint": "continuous west edge of the roof",
            "base_layer_decision": "base_structural_unit",
            "render_role": "not_applicable",
            "top_down_legibility": "not_applicable"
          }
        ],
        "transient_markers_to_describe": [],
        "ignored_state_overlay_markers": [
          {
            "number": 14,
            "label": "windblown dried herbs",
            "category": "prop",
            "position_hint": "one localized patch beside the raised drying platform",
            "base_layer_decision": "state_overlay_transient_object",
            "render_role": "not_applicable",
            "top_down_legibility": "not_applicable"
          },
          {
            "number": 15,
            "label": "advertising leaflet in door gap",
            "category": "prop",
            "position_hint": "lock-side gap of the iron entrance door",
            "base_layer_decision": "state_overlay_transient_object",
            "render_role": "not_applicable",
            "top_down_legibility": "not_applicable"
          },
          {
            "number": 16,
            "label": "concealed intruder at entrance",
            "category": "prop",
            "position_hint": "entrance threshold directly outside the iron door",
            "base_layer_decision": "state_overlay_transient_object",
            "render_role": "not_applicable",
            "top_down_legibility": "not_applicable"
          },
          {
            "number": 17,
            "label": "attack silhouette in window",
            "category": "prop",
            "position_hint": "confined to the small living-room window opening",
            "base_layer_decision": "state_overlay_plot_cue",
            "render_role": "not_applicable",
            "top_down_legibility": "not_applicable"
          },
          {
            "number": 18,
            "label": "black cat on parapet",
            "category": "prop",
            "position_hint": "single spot on the south parapet facing the rooftop room",
            "base_layer_decision": "state_overlay_transient_object",
            "render_role": "not_applicable",
            "top_down_legibility": "not_applicable"
          },
          {
            "number": 19,
            "label": "lit window at dawn",
            "category": "prop",
            "position_hint": "confined to the small living-room window opening",
            "base_layer_decision": "state_overlay_plot_cue",
            "render_role": "not_applicable",
            "top_down_legibility": "not_applicable"
          }
        ],
        "target_unit_marker_numbers": [
          1,
          2,
          3,
          10,
          11,
          12,
          13
        ],
        "dominant_target_unit_marker_number": null,
        "clean_background_expected": true,
        "diagnostics": [
          "multiple base_structural_unit markers in use_numbered_elements ([1, 2, 3, 10, 11, 12, 13]); dominant_target_unit_marker_number left empty (W19B-1 lock — no lexical disambiguation)"
        ]
      },
      "L04B03": {
        "bg_id": "L04B03",
        "fp_id": "fp_l04_rooftop_exterior",
        "use_numbered_elements": [
          1,
          2,
          3,
          4,
          5,
          6,
          7,
          8,
          9,
          10,
          11,
          12,
          13,
          14,
          15,
          16,
          17
        ],
        "ignore_numbered_elements": [
          18,
          19
        ],
        "base_markers_to_reference": [
          {
            "number": 1,
            "label": "open rooftop deck",
            "category": "area",
            "position_hint": "central and western portion of the roof inside the parapets",
            "base_layer_decision": "base_structural_unit",
            "render_role": "not_applicable",
            "top_down_legibility": "not_applicable"
          },
          {
            "number": 2,
            "label": "compact rooftop room",
            "category": "area",
            "position_hint": "northeast portion of the roof",
            "base_layer_decision": "base_structural_unit",
            "render_role": "not_applicable",
            "top_down_legibility": "not_applicable"
          },
          {
            "number": 3,
            "label": "entrance threshold",
            "category": "area",
            "position_hint": "immediately south of the rooftop-room entrance",
            "base_layer_decision": "base_structural_unit",
            "render_role": "not_applicable",
            "top_down_legibility": "not_applicable"
          },
          {
            "number": 4,
            "label": "roof stair access opening",
            "category": "opening",
            "position_hint": "southwest corner of the rooftop deck",
            "base_layer_decision": "base_opening",
            "render_role": "not_applicable",
            "top_down_legibility": "not_applicable"
          },
          {
            "number": 5,
            "label": "iron entrance door",
            "category": "opening",
            "position_hint": "south wall of the rooftop room, near its southeast end",
            "base_layer_decision": "base_opening",
            "render_role": "not_applicable",
            "top_down_legibility": "not_applicable"
          },
          {
            "number": 6,
            "label": "small living-room window",
            "category": "opening",
            "position_hint": "west wall of the rooftop room, facing the open deck",
            "base_layer_decision": "base_opening",
            "render_role": "not_applicable",
            "top_down_legibility": "not_applicable"
          },
          {
            "number": 7,
            "label": "cylindrical water tank",
            "category": "prop",
            "position_hint": "northwest side of the rooftop room",
            "base_layer_decision": "base_persistent_fixture",
            "render_role": "not_applicable",
            "top_down_legibility": "not_applicable"
          },
          {
            "number": 8,
            "label": "raised drying platform",
            "category": "furniture",
            "position_hint": "west-central rooftop deck beneath the clothesline",
            "base_layer_decision": "base_persistent_furniture",
            "render_role": "not_applicable",
            "top_down_legibility": "not_applicable"
          },
          {
            "number": 9,
            "label": "fixed clothesline",
            "category": "prop",
            "position_hint": "single east-west run across the central rooftop deck",
            "base_layer_decision": "base_persistent_fixture",
            "render_role": "not_applicable",
            "top_down_legibility": "not_applicable"
          },
          {
            "number": 10,
            "label": "north parapet run",
            "category": "area",
            "position_hint": "continuous north edge of the roof",
            "base_layer_decision": "base_structural_unit",
            "render_role": "not_applicable",
            "top_down_legibility": "not_applicable"
          },
          {
            "number": 11,
            "label": "east parapet run",
            "category": "area",
            "position_hint": "continuous east edge of the roof",
            "base_layer_decision": "base_structural_unit",
            "render_role": "not_applicable",
            "top_down_legibility": "not_applicable"
          },
          {
            "number": 12,
            "label": "south parapet run",
            "category": "area",
            "position_hint": "continuous south edge of the roof",
            "base_layer_decision": "base_structural_unit",
            "render_role": "not_applicable",
            "top_down_legibility": "not_applicable"
          },
          {
            "number": 13,
            "label": "west parapet run",
            "category": "area",
            "position_hint": "continuous west edge of the roof",
            "base_layer_decision": "base_structural_unit",
            "render_role": "not_applicable",
            "top_down_legibility": "not_applicable"
          }
        ],
        "transient_markers_to_describe": [
          {
            "number": 14,
            "label": "windblown dried herbs",
            "category": "prop",
            "position_hint": "one localized patch beside the raised drying platform",
            "base_layer_decision": "state_overlay_transient_object",
            "render_role": "not_applicable",
            "top_down_legibility": "not_applicable"
          },
          {
            "number": 15,
            "label": "advertising leaflet in door gap",
            "category": "prop",
            "position_hint": "lock-side gap of the iron entrance door",
            "base_layer_decision": "state_overlay_transient_object",
            "render_role": "not_applicable",
            "top_down_legibility": "not_applicable"
          },
          {
            "number": 16,
            "label": "concealed intruder at entrance",
            "category": "prop",
            "position_hint": "entrance threshold directly outside the iron door",
            "base_layer_decision": "state_overlay_transient_object",
            "render_role": "not_applicable",
            "top_down_legibility": "not_applicable"
          },
          {
            "number": 17,
            "label": "attack silhouette in window",
            "category": "prop",
            "position_hint": "confined to the small living-room window opening",
            "base_layer_decision": "state_overlay_plot_cue",
            "render_role": "not_applicable",
            "top_down_legibility": "not_applicable"
          }
        ],
        "ignored_state_overlay_markers": [
          {
            "number": 18,
            "label": "black cat on parapet",
            "category": "prop",
            "position_hint": "single spot on the south parapet facing the rooftop room",
            "base_layer_decision": "state_overlay_transient_object",
            "render_role": "not_applicable",
            "top_down_legibility": "not_applicable"
          },
          {
            "number": 19,
            "label": "lit window at dawn",
            "category": "prop",
            "position_hint": "confined to the small living-room window opening",
            "base_layer_decision": "state_overlay_plot_cue",
            "render_role": "not_applicable",
            "top_down_legibility": "not_applicable"
          }
        ],
        "target_unit_marker_numbers": [
          1,
          2,
          3,
          10,
          11,
          12,
          13
        ],
        "dominant_target_unit_marker_number": null,
        "clean_background_expected": false,
        "diagnostics": [
          "multiple base_structural_unit markers in use_numbered_elements ([1, 2, 3, 10, 11, 12, 13]); dominant_target_unit_marker_number left empty (W19B-1 lock — no lexical disambiguation)"
        ]
      },
      "L04B01": {
        "bg_id": "L04B01",
        "fp_id": "fp_l04_rooftop_exterior",
        "use_numbered_elements": [
          1,
          2,
          3,
          4,
          5,
          6,
          7,
          8,
          9,
          10,
          11,
          12,
          13,
          18,
          19
        ],
        "ignore_numbered_elements": [
          14,
          15,
          16,
          17
        ],
        "base_markers_to_reference": [
          {
            "number": 1,
            "label": "open rooftop deck",
            "category": "area",
            "position_hint": "central and western portion of the roof inside the parapets",
            "base_layer_decision": "base_structural_unit",
            "render_role": "not_applicable",
            "top_down_legibility": "not_applicable"
          },
          {
            "number": 2,
            "label": "compact rooftop room",
            "category": "area",
            "position_hint": "northeast portion of the roof",
            "base_layer_decision": "base_structural_unit",
            "render_role": "not_applicable",
            "top_down_legibility": "not_applicable"
          },
          {
            "number": 3,
            "label": "entrance threshold",
            "category": "area",
            "position_hint": "immediately south of the rooftop-room entrance",
            "base_layer_decision": "base_structural_unit",
            "render_role": "not_applicable",
            "top_down_legibility": "not_applicable"
          },
          {
            "number": 4,
            "label": "roof stair access opening",
            "category": "opening",
            "position_hint": "southwest corner of the rooftop deck",
            "base_layer_decision": "base_opening",
            "render_role": "not_applicable",
            "top_down_legibility": "not_applicable"
          },
          {
            "number": 5,
            "label": "iron entrance door",
            "category": "opening",
            "position_hint": "south wall of the rooftop room, near its southeast end",
            "base_layer_decision": "base_opening",
            "render_role": "not_applicable",
            "top_down_legibility": "not_applicable"
          },
          {
            "number": 6,
            "label": "small living-room window",
            "category": "opening",
            "position_hint": "west wall of the rooftop room, facing the open deck",
            "base_layer_decision": "base_opening",
            "render_role": "not_applicable",
            "top_down_legibility": "not_applicable"
          },
          {
            "number": 7,
            "label": "cylindrical water tank",
            "category": "prop",
            "position_hint": "northwest side of the rooftop room",
            "base_layer_decision": "base_persistent_fixture",
            "render_role": "not_applicable",
            "top_down_legibility": "not_applicable"
          },
          {
            "number": 8,
            "label": "raised drying platform",
            "category": "furniture",
            "position_hint": "west-central rooftop deck beneath the clothesline",
            "base_layer_decision": "base_persistent_furniture",
            "render_role": "not_applicable",
            "top_down_legibility": "not_applicable"
          },
          {
            "number": 9,
            "label": "fixed clothesline",
            "category": "prop",
            "position_hint": "single east-west run across the central rooftop deck",
            "base_layer_decision": "base_persistent_fixture",
            "render_role": "not_applicable",
            "top_down_legibility": "not_applicable"
          },
          {
            "number": 10,
            "label": "north parapet run",
            "category": "area",
            "position_hint": "continuous north edge of the roof",
            "base_layer_decision": "base_structural_unit",
            "render_role": "not_applicable",
            "top_down_legibility": "not_applicable"
          },
          {
            "number": 11,
            "label": "east parapet run",
            "category": "area",
            "position_hint": "continuous east edge of the roof",
            "base_layer_decision": "base_structural_unit",
            "render_role": "not_applicable",
            "top_down_legibility": "not_applicable"
          },
          {
            "number": 12,
            "label": "south parapet run",
            "category": "area",
            "position_hint": "continuous south edge of the roof",
            "base_layer_decision": "base_structural_unit",
            "render_role": "not_applicable",
            "top_down_legibility": "not_applicable"
          },
          {
            "number": 13,
            "label": "west parapet run",
            "category": "area",
            "position_hint": "continuous west edge of the roof",
            "base_layer_decision": "base_structural_unit",
            "render_role": "not_applicable",
            "top_down_legibility": "not_applicable"
          }
        ],
        "transient_markers_to_describe": [
          {
            "number": 18,
            "label": "black cat on parapet",
            "category": "prop",
            "position_hint": "single spot on the south parapet facing the rooftop room",
            "base_layer_decision": "state_overlay_transient_object",
            "render_role": "not_applicable",
            "top_down_legibility": "not_applicable"
          },
          {
            "number": 19,
            "label": "lit window at dawn",
            "category": "prop",
            "position_hint": "confined to the small living-room window opening",
            "base_layer_decision": "state_overlay_plot_cue",
            "render_role": "not_applicable",
            "top_down_legibility": "not_applicable"
          }
        ],
        "ignored_state_overlay_markers": [
          {
            "number": 14,
            "label": "windblown dried herbs",
            "category": "prop",
            "position_hint": "one localized patch beside the raised drying platform",
            "base_layer_decision": "state_overlay_transient_object",
            "render_role": "not_applicable",
            "top_down_legibility": "not_applicable"
          },
          {
            "number": 15,
            "label": "advertising leaflet in door gap",
            "category": "prop",
            "position_hint": "lock-side gap of the iron entrance door",
            "base_layer_decision": "state_overlay_transient_object",
            "render_role": "not_applicable",
            "top_down_legibility": "not_applicable"
          },
          {
            "number": 16,
            "label": "concealed intruder at entrance",
            "category": "prop",
            "position_hint": "entrance threshold directly outside the iron door",
            "base_layer_decision": "state_overlay_transient_object",
            "render_role": "not_applicable",
            "top_down_legibility": "not_applicable"
          },
          {
            "number": 17,
            "label": "attack silhouette in window",
            "category": "prop",
            "position_hint": "confined to the small living-room window opening",
            "base_layer_decision": "state_overlay_plot_cue",
            "render_role": "not_applicable",
            "top_down_legibility": "not_applicable"
          }
        ],
        "target_unit_marker_numbers": [
          1,
          2,
          3,
          10,
          11,
          12,
          13
        ],
        "dominant_target_unit_marker_number": null,
        "clean_background_expected": false,
        "diagnostics": [
          "multiple base_structural_unit markers in use_numbered_elements ([1, 2, 3, 10, 11, 12, 13]); dominant_target_unit_marker_number left empty (W19B-1 lock — no lexical disambiguation)"
        ]
      },
      "L05B01": {
        "bg_id": "L05B01",
        "fp_id": "fp_l05_concrete_stairs",
        "use_numbered_elements": [
          3,
          4,
          5,
          6,
          7,
          8,
          9,
          12,
          13,
          14
        ],
        "ignore_numbered_elements": [],
        "base_markers_to_reference": [
          {
            "number": 3,
            "label": "exterior concrete stair route",
            "category": "area",
            "position_hint": "narrow circulation strip rising from the rear yard toward the roof",
            "base_layer_decision": "base_structural_unit",
            "render_role": "not_applicable",
            "top_down_legibility": "not_applicable"
          },
          {
            "number": 4,
            "label": "upper rooftop landing",
            "category": "area",
            "position_hint": "top of the stair route beside the rooftop entrance approach",
            "base_layer_decision": "base_structural_unit",
            "render_role": "not_applicable",
            "top_down_legibility": "not_applicable"
          },
          {
            "number": 5,
            "label": "roof terrace",
            "category": "area",
            "position_hint": "open roof area west of the rooftop room",
            "base_layer_decision": "base_structural_unit",
            "render_role": "not_applicable",
            "top_down_legibility": "not_applicable"
          },
          {
            "number": 6,
            "label": "rooftop room footprint",
            "category": "area",
            "position_hint": "east side of the roof terrace",
            "base_layer_decision": "base_structural_unit",
            "render_role": "not_applicable",
            "top_down_legibility": "not_applicable"
          },
          {
            "number": 7,
            "label": "iron entrance door",
            "category": "opening",
            "position_hint": "west-facing wall of the rooftop room, aligned with the upper landing",
            "base_layer_decision": "base_opening",
            "render_role": "not_applicable",
            "top_down_legibility": "not_applicable"
          },
          {
            "number": 8,
            "label": "entrance apron",
            "category": "area",
            "position_hint": "small threshold zone immediately outside the iron entrance door",
            "base_layer_decision": "base_structural_unit",
            "render_role": "not_applicable",
            "top_down_legibility": "not_applicable"
          },
          {
            "number": 9,
            "label": "rooftop water tank",
            "category": "prop",
            "position_hint": "northwest service corner of the roof terrace",
            "base_layer_decision": "base_persistent_fixture",
            "render_role": "not_applicable",
            "top_down_legibility": "not_applicable"
          },
          {
            "number": 12,
            "label": "west parapet run",
            "category": "area",
            "position_hint": "single contiguous run along the exposed west edge of the roof terrace",
            "base_layer_decision": "base_structural_unit",
            "render_role": "not_applicable",
            "top_down_legibility": "not_applicable"
          },
          {
            "number": 13,
            "label": "small room window",
            "category": "opening",
            "position_hint": "west-facing wall of the rooftop room beside the iron entrance door",
            "base_layer_decision": "base_opening",
            "render_role": "not_applicable",
            "top_down_legibility": "not_applicable"
          }
        ],
        "transient_markers_to_describe": [
          {
            "number": 14,
            "label": "half-open iron door state",
            "category": "opening",
            "position_hint": "at the iron entrance door on the upper rooftop landing; overlay only",
            "base_layer_decision": "state_overlay_plot_cue",
            "render_role": "not_applicable",
            "top_down_legibility": "not_applicable"
          }
        ],
        "ignored_state_overlay_markers": [],
        "target_unit_marker_numbers": [
          3,
          4,
          5,
          6,
          8,
          12
        ],
        "dominant_target_unit_marker_number": null,
        "clean_background_expected": false,
        "diagnostics": [
          "multiple base_structural_unit markers in use_numbered_elements ([3, 4, 5, 6, 8, 12]); dominant_target_unit_marker_number left empty (W19B-1 lock — no lexical disambiguation)"
        ]
      },
      "L05B02": {
        "bg_id": "L05B02",
        "fp_id": "fp_l05_outer_yard",
        "use_numbered_elements": [
          1,
          2,
          3,
          4,
          5,
          6,
          7,
          8,
          9,
          10
        ],
        "ignore_numbered_elements": [],
        "base_markers_to_reference": [
          {
            "number": 1,
            "label": "outer yard",
            "category": "area",
            "position_hint": "central open area between the street gate and residential building",
            "base_layer_decision": "base_structural_unit",
            "render_role": "not_applicable",
            "top_down_legibility": "not_applicable"
          },
          {
            "number": 2,
            "label": "residential building footprint",
            "category": "area",
            "position_hint": "north and east side of the plan, bordering the outer yard",
            "base_layer_decision": "base_structural_unit",
            "render_role": "not_applicable",
            "top_down_legibility": "not_applicable"
          },
          {
            "number": 3,
            "label": "vehicle access lane",
            "category": "area",
            "position_hint": "south gate to central yard, forming a clear vehicle approach",
            "base_layer_decision": "base_structural_unit",
            "render_role": "not_applicable",
            "top_down_legibility": "not_applicable"
          },
          {
            "number": 4,
            "label": "bicycle parking recess",
            "category": "area",
            "position_hint": "northwest rear corner of the outer yard",
            "base_layer_decision": "base_structural_unit",
            "render_role": "not_applicable",
            "top_down_legibility": "not_applicable"
          },
          {
            "number": 5,
            "label": "vehicle gate",
            "category": "opening",
            "position_hint": "south boundary, aligned with the vehicle access lane",
            "base_layer_decision": "base_opening",
            "render_role": "not_applicable",
            "top_down_legibility": "not_applicable"
          },
          {
            "number": 6,
            "label": "stair entrance door",
            "category": "opening",
            "position_hint": "east edge of the yard at the base of the roof-access staircase",
            "base_layer_decision": "base_opening",
            "render_role": "not_applicable",
            "top_down_legibility": "not_applicable"
          },
          {
            "number": 7,
            "label": "roof-access staircase",
            "category": "area",
            "position_hint": "attached to the east side of the residential building, rising from the yard entrance toward the roof",
            "base_layer_decision": "base_structural_unit",
            "render_role": "not_applicable",
            "top_down_legibility": "not_applicable"
          }
        ],
        "transient_markers_to_describe": [
          {
            "number": 8,
            "label": "loosely parked bicycle",
            "category": "prop",
            "position_hint": "beside the bicycle parking recess in the rear corner",
            "base_layer_decision": "state_overlay_transient_object",
            "render_role": "not_applicable",
            "top_down_legibility": "not_applicable"
          },
          {
            "number": 9,
            "label": "police vehicle",
            "category": "prop",
            "position_hint": "inside the yard on the vehicle access lane, facing inward from the gate",
            "base_layer_decision": "state_overlay_transient_object",
            "render_role": "not_applicable",
            "top_down_legibility": "not_applicable"
          },
          {
            "number": 10,
            "label": "red and blue siren wash",
            "category": "prop",
            "position_hint": "localized across the police vehicle arrival surface and adjacent yard at night",
            "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)"
        ]
      },
      "L06B05": {
        "bg_id": "L06B05",
        "fp_id": "fp_l06_rooftop_room_interior",
        "use_numbered_elements": [
          1,
          2,
          6,
          7,
          8,
          12,
          13,
          14,
          15,
          16,
          17,
          18,
          21,
          22,
          23
        ],
        "ignore_numbered_elements": [
          24,
          25,
          26,
          27,
          28,
          29,
          30,
          31,
          32,
          33,
          34,
          35,
          36,
          37
        ],
        "base_markers_to_reference": [
          {
            "number": 1,
            "label": "Shared living and dining area",
            "category": "area",
            "position_hint": "central and western portion of the rooftop dwelling",
            "base_layer_decision": "base_structural_unit",
            "render_role": "not_applicable",
            "top_down_legibility": "not_applicable"
          },
          {
            "number": 2,
            "label": "Linear kitchenette",
            "category": "area",
            "position_hint": "northwest edge of the shared area",
            "base_layer_decision": "base_structural_unit",
            "render_role": "not_applicable",
            "top_down_legibility": "not_applicable"
          },
          {
            "number": 6,
            "label": "Entrance threshold",
            "category": "area",
            "position_hint": "southwest corner inside the rooftop entrance",
            "base_layer_decision": "base_structural_unit",
            "render_role": "not_applicable",
            "top_down_legibility": "not_applicable"
          },
          {
            "number": 7,
            "label": "Iron entrance door",
            "category": "opening",
            "position_hint": "south wall of the entrance threshold",
            "base_layer_decision": "base_opening",
            "render_role": "not_applicable",
            "top_down_legibility": "not_applicable"
          },
          {
            "number": 8,
            "label": "Small living window",
            "category": "opening",
            "position_hint": "west wall of the shared living area",
            "base_layer_decision": "base_opening",
            "render_role": "not_applicable",
            "top_down_legibility": "not_applicable"
          },
          {
            "number": 12,
            "label": "Dining table",
            "category": "furniture",
            "position_hint": "center of the shared living and dining area",
            "base_layer_decision": "base_persistent_furniture",
            "render_role": "not_applicable",
            "top_down_legibility": "not_applicable"
          },
          {
            "number": 13,
            "label": "Dining chair one",
            "category": "furniture",
            "position_hint": "west side of the dining table",
            "base_layer_decision": "base_persistent_furniture",
            "render_role": "not_applicable",
            "top_down_legibility": "not_applicable"
          },
          {
            "number": 14,
            "label": "Dining chair two",
            "category": "furniture",
            "position_hint": "east side of the dining table",
            "base_layer_decision": "base_persistent_furniture",
            "render_role": "not_applicable",
            "top_down_legibility": "not_applicable"
          },
          {
            "number": 15,
            "label": "Kitchen sink",
            "category": "furniture",
            "position_hint": "west end of the linear kitchenette",
            "base_layer_decision": "base_persistent_fixture",
            "render_role": "not_applicable",
            "top_down_legibility": "not_applicable"
          },
          {
            "number": 16,
            "label": "Kitchen stovetop",
            "category": "furniture",
            "position_hint": "east end of the linear kitchenette",
            "base_layer_decision": "base_persistent_fixture",
            "render_role": "not_applicable",
            "top_down_legibility": "not_applicable"
          },
          {
            "number": 17,
            "label": "Television stand",
            "category": "furniture",
            "position_hint": "north wall of the shared area opposite the seating space",
            "base_layer_decision": "base_persistent_furniture",
            "render_role": "not_applicable",
            "top_down_legibility": "not_applicable"
          },
          {
            "number": 18,
            "label": "Living floor lamp",
            "category": "furniture",
            "position_hint": "northwest corner of the shared area near the television",
            "base_layer_decision": "base_persistent_furniture",
            "render_role": "not_applicable",
            "top_down_legibility": "not_applicable"
          },
          {
            "number": 21,
            "label": "Mother bedroom door",
            "category": "opening",
            "position_hint": "south wall of the mother bedroom",
            "base_layer_decision": "base_opening",
            "render_role": "not_applicable",
            "top_down_legibility": "not_applicable"
          },
          {
            "number": 22,
            "label": "Daughter bedroom door",
            "category": "opening",
            "position_hint": "west wall of the daughter bedroom",
            "base_layer_decision": "base_opening",
            "render_role": "not_applicable",
            "top_down_legibility": "not_applicable"
          },
          {
            "number": 23,
            "label": "Bathroom door",
            "category": "opening",
            "position_hint": "west wall of the compact bathroom",
            "base_layer_decision": "base_opening",
            "render_role": "not_applicable",
            "top_down_legibility": "not_applicable"
          }
        ],
        "transient_markers_to_describe": [],
        "ignored_state_overlay_markers": [
          {
            "number": 24,
            "label": "Blood pool and nearby spatter cluster",
            "category": "prop",
            "position_hint": "single contiguous floor area beside the daughter bed and curtained corner",
            "base_layer_decision": "state_overlay_plot_cue",
            "render_role": "not_applicable",
            "top_down_legibility": "not_applicable"
          },
          {
            "number": 25,
            "label": "Bloody footprint trail",
            "category": "prop",
            "position_hint": "contiguous path across the daughter bedroom floor toward the curtain",
            "base_layer_decision": "state_overlay_plot_cue",
            "render_role": "not_applicable",
            "top_down_legibility": "not_applicable"
          },
          {
            "number": 26,
            "label": "Body behind curtain",
            "category": "prop",
            "position_hint": "east corner of the daughter bedroom behind the window curtain",
            "base_layer_decision": "state_overlay_transient_object",
            "render_role": "not_applicable",
            "top_down_legibility": "not_applicable"
          },
          {
            "number": 27,
            "label": "Crumpled photograph by body",
            "category": "prop",
            "position_hint": "floor beside the body in the curtained bedroom corner",
            "base_layer_decision": "state_overlay_transient_object",
            "render_role": "not_applicable",
            "top_down_legibility": "not_applicable"
          },
          {
            "number": 28,
            "label": "Red circle above bed",
            "category": "prop",
            "position_hint": "north wall of the daughter bedroom directly above the bed",
            "base_layer_decision": "state_overlay_plot_cue",
            "render_role": "not_applicable",
            "top_down_legibility": "not_applicable"
          },
          {
            "number": 29,
            "label": "Pinned bloody photograph",
            "category": "prop",
            "position_hint": "center of the red circle above the daughter bed",
            "base_layer_decision": "state_overlay_transient_object",
            "render_role": "not_applicable",
            "top_down_legibility": "not_applicable"
          },
          {
            "number": 30,
            "label": "Vanishing bathroom red circle",
            "category": "prop",
            "position_hint": "single wall surface beside the bathroom mirror",
            "base_layer_decision": "state_overlay_plot_cue",
            "render_role": "not_applicable",
            "top_down_legibility": "not_applicable"
          },
          {
            "number": 31,
            "label": "Melting face in tabletop photograph",
            "category": "prop",
            "position_hint": "photograph resting at one end of the dining table",
            "base_layer_decision": "state_overlay_plot_cue",
            "render_role": "not_applicable",
            "top_down_legibility": "not_applicable"
          },
          {
            "number": 32,
            "label": "Overturned household contents pile",
            "category": "prop",
            "position_hint": "single contiguous pile beside the living-room storage edge",
            "base_layer_decision": "state_overlay_transient_object",
            "render_role": "not_applicable",
            "top_down_legibility": "not_applicable"
          },
          {
            "number": 33,
            "label": "Fallen dining chair one",
            "category": "furniture",
            "position_hint": "floor immediately west of the dining table",
            "base_layer_decision": "state_overlay_transient_object",
            "render_role": "not_applicable",
            "top_down_legibility": "not_applicable"
          },
          {
            "number": 34,
            "label": "Fallen dining chair two",
            "category": "furniture",
            "position_hint": "floor immediately east of the dining table",
            "base_layer_decision": "state_overlay_transient_object",
            "render_role": "not_applicable",
            "top_down_legibility": "not_applicable"
          },
          {
            "number": 35,
            "label": "Open state of living window",
            "category": "opening",
            "position_hint": "small living window on the west wall",
            "base_layer_decision": "state_overlay_plot_cue",
            "render_role": "not_applicable",
            "top_down_legibility": "not_applicable"
          },
          {
            "number": 36,
            "label": "Intruder footprint trail",
            "category": "prop",
            "position_hint": "contiguous path from the entrance across the shared room",
            "base_layer_decision": "state_overlay_plot_cue",
            "render_role": "not_applicable",
            "top_down_legibility": "not_applicable"
          },
          {
            "number": 37,
            "label": "Wind-moved entrance door state",
            "category": "opening",
            "position_hint": "iron entrance door at the south wall threshold",
            "base_layer_decision": "state_overlay_plot_cue",
            "render_role": "not_applicable",
            "top_down_legibility": "not_applicable"
          }
        ],
        "target_unit_marker_numbers": [
          1,
          2,
          6
        ],
        "dominant_target_unit_marker_number": null,
        "clean_background_expected": true,
        "diagnostics": [
          "multiple base_structural_unit markers in use_numbered_elements ([1, 2, 6]); dominant_target_unit_marker_number left empty (W19B-1 lock — no lexical disambiguation)"
        ]
      },
      "L06B07": {
        "bg_id": "L06B07",
        "fp_id": "fp_l06_rooftop_room_interior",
        "use_numbered_elements": [
          4,
          9,
          11,
          22,
          24,
          25,
          26,
          27,
          28
        ],
        "ignore_numbered_elements": [
          29,
          30,
          31,
          32,
          33,
          34,
          35,
          36,
          37
        ],
        "base_markers_to_reference": [
          {
            "number": 4,
            "label": "Daughter bedroom",
            "category": "area",
            "position_hint": "southeast room adjoining the shared area",
            "base_layer_decision": "base_structural_unit",
            "render_role": "not_applicable",
            "top_down_legibility": "not_applicable"
          },
          {
            "number": 9,
            "label": "Curtained bedroom window",
            "category": "opening",
            "position_hint": "east wall of the daughter bedroom",
            "base_layer_decision": "base_opening",
            "render_role": "not_applicable",
            "top_down_legibility": "not_applicable"
          },
          {
            "number": 11,
            "label": "Daughter bed",
            "category": "furniture",
            "position_hint": "north wall of the daughter bedroom",
            "base_layer_decision": "base_persistent_furniture",
            "render_role": "not_applicable",
            "top_down_legibility": "not_applicable"
          },
          {
            "number": 22,
            "label": "Daughter bedroom door",
            "category": "opening",
            "position_hint": "west wall of the daughter bedroom",
            "base_layer_decision": "base_opening",
            "render_role": "not_applicable",
            "top_down_legibility": "not_applicable"
          }
        ],
        "transient_markers_to_describe": [
          {
            "number": 24,
            "label": "Blood pool and nearby spatter cluster",
            "category": "prop",
            "position_hint": "single contiguous floor area beside the daughter bed and curtained corner",
            "base_layer_decision": "state_overlay_plot_cue",
            "render_role": "not_applicable",
            "top_down_legibility": "not_applicable"
          },
          {
            "number": 25,
            "label": "Bloody footprint trail",
            "category": "prop",
            "position_hint": "contiguous path across the daughter bedroom floor toward the curtain",
            "base_layer_decision": "state_overlay_plot_cue",
            "render_role": "not_applicable",
            "top_down_legibility": "not_applicable"
          },
          {
            "number": 26,
            "label": "Body behind curtain",
            "category": "prop",
            "position_hint": "east corner of the daughter bedroom behind the window curtain",
            "base_layer_decision": "state_overlay_transient_object",
            "render_role": "not_applicable",
            "top_down_legibility": "not_applicable"
          },
          {
            "number": 27,
            "label": "Crumpled photograph by body",
            "category": "prop",
            "position_hint": "floor beside the body in the curtained bedroom corner",
            "base_layer_decision": "state_overlay_transient_object",
            "render_role": "not_applicable",
            "top_down_legibility": "not_applicable"
          },
          {
            "number": 28,
            "label": "Red circle above bed",
            "category": "prop",
            "position_hint": "north wall of the daughter bedroom directly above the bed",
            "base_layer_decision": "state_overlay_plot_cue",
            "render_role": "not_applicable",
            "top_down_legibility": "not_applicable"
          }
        ],
        "ignored_state_overlay_markers": [
          {
            "number": 29,
            "label": "Pinned bloody photograph",
            "category": "prop",
            "position_hint": "center of the red circle above the daughter bed",
            "base_layer_decision": "state_overlay_transient_object",
            "render_role": "not_applicable",
            "top_down_legibility": "not_applicable"
          },
          {
            "number": 30,
            "label": "Vanishing bathroom red circle",
            "category": "prop",
            "position_hint": "single wall surface beside the bathroom mirror",
            "base_layer_decision": "state_overlay_plot_cue",
            "render_role": "not_applicable",
            "top_down_legibility": "not_applicable"
          },
          {
            "number": 31,
            "label": "Melting face in tabletop photograph",
            "category": "prop",
            "position_hint": "photograph resting at one end of the dining table",
            "base_layer_decision": "state_overlay_plot_cue",
            "render_role": "not_applicable",
            "top_down_legibility": "not_applicable"
          },
          {
            "number": 32,
            "label": "Overturned household contents pile",
            "category": "prop",
            "position_hint": "single contiguous pile beside the living-room storage edge",
            "base_layer_decision": "state_overlay_transient_object",
            "render_role": "not_applicable",
            "top_down_legibility": "not_applicable"
          },
          {
            "number": 33,
            "label": "Fallen dining chair one",
            "category": "furniture",
            "position_hint": "floor immediately west of the dining table",
            "base_layer_decision": "state_overlay_transient_object",
            "render_role": "not_applicable",
            "top_down_legibility": "not_applicable"
          },
          {
            "number": 34,
            "label": "Fallen dining chair two",
            "category": "furniture",
            "position_hint": "floor immediately east of the dining table",
            "base_layer_decision": "state_overlay_transient_object",
            "render_role": "not_applicable",
            "top_down_legibility": "not_applicable"
          },
          {
            "number": 35,
            "label": "Open state of living window",
            "category": "opening",
            "position_hint": "small living window on the west wall",
            "base_layer_decision": "state_overlay_plot_cue",
            "render_role": "not_applicable",
            "top_down_legibility": "not_applicable"
          },
          {
            "number": 36,
            "label": "Intruder footprint trail",
            "category": "prop",
            "position_hint": "contiguous path from the entrance across the shared room",
            "base_layer_decision": "state_overlay_plot_cue",
            "render_role": "not_applicable",
            "top_down_legibility": "not_applicable"
          },
          {
            "number": 37,
            "label": "Wind-moved entrance door state",
            "category": "opening",
            "position_hint": "iron entrance door at the south wall threshold",
            "base_layer_decision": "state_overlay_plot_cue",
            "render_role": "not_applicable",
            "top_down_legibility": "not_applicable"
          }
        ],
        "target_unit_marker_numbers": [
          4
        ],
        "dominant_target_unit_marker_number": 4,
        "clean_background_expected": false,
        "diagnostics": []
      },
      "L06B08": {
        "bg_id": "L06B08",
        "fp_id": "fp_l06_rooftop_room_interior",
        "use_numbered_elements": [
          4,
          9,
          11,
          22
        ],
        "ignore_numbered_elements": [
          24,
          25,
          26,
          27,
          28,
          29,
          30,
          31,
          32,
          33,
          34,
          35,
          36,
          37
        ],
        "base_markers_to_reference": [
          {
            "number": 4,
            "label": "Daughter bedroom",
            "category": "area",
            "position_hint": "southeast room adjoining the shared area",
            "base_layer_decision": "base_structural_unit",
            "render_role": "not_applicable",
            "top_down_legibility": "not_applicable"
          },
          {
            "number": 9,
            "label": "Curtained bedroom window",
            "category": "opening",
            "position_hint": "east wall of the daughter bedroom",
            "base_layer_decision": "base_opening",
            "render_role": "not_applicable",
            "top_down_legibility": "not_applicable"
          },
          {
            "number": 11,
            "label": "Daughter bed",
            "category": "furniture",
            "position_hint": "north wall of the daughter bedroom",
            "base_layer_decision": "base_persistent_furniture",
            "render_role": "not_applicable",
            "top_down_legibility": "not_applicable"
          },
          {
            "number": 22,
            "label": "Daughter bedroom door",
            "category": "opening",
            "position_hint": "west wall of the daughter bedroom",
            "base_layer_decision": "base_opening",
            "render_role": "not_applicable",
            "top_down_legibility": "not_applicable"
          }
        ],
        "transient_markers_to_describe": [],
        "ignored_state_overlay_markers": [
          {
            "number": 24,
            "label": "Blood pool and nearby spatter cluster",
            "category": "prop",
            "position_hint": "single contiguous floor area beside the daughter bed and curtained corner",
            "base_layer_decision": "state_overlay_plot_cue",
            "render_role": "not_applicable",
            "top_down_legibility": "not_applicable"
          },
          {
            "number": 25,
            "label": "Bloody footprint trail",
            "category": "prop",
            "position_hint": "contiguous path across the daughter bedroom floor toward the curtain",
            "base_layer_decision": "state_overlay_plot_cue",
            "render_role": "not_applicable",
            "top_down_legibility": "not_applicable"
          },
          {
            "number": 26,
            "label": "Body behind curtain",
            "category": "prop",
            "position_hint": "east corner of the daughter bedroom behind the window curtain",
            "base_layer_decision": "state_overlay_transient_object",
            "render_role": "not_applicable",
            "top_down_legibility": "not_applicable"
          },
          {
            "number": 27,
            "label": "Crumpled photograph by body",
            "category": "prop",
            "position_hint": "floor beside the body in the curtained bedroom corner",
            "base_layer_decision": "state_overlay_transient_object",
            "render_role": "not_applicable",
            "top_down_legibility": "not_applicable"
          },
          {
            "number": 28,
            "label": "Red circle above bed",
            "category": "prop",
            "position_hint": "north wall of the daughter bedroom directly above the bed",
            "base_layer_decision": "state_overlay_plot_cue",
            "render_role": "not_applicable",
            "top_down_legibility": "not_applicable"
          },
          {
            "number": 29,
            "label": "Pinned bloody photograph",
            "category": "prop",
            "position_hint": "center of the red circle above the daughter bed",
            "base_layer_decision": "state_overlay_transient_object",
            "render_role": "not_applicable",
            "top_down_legibility": "not_applicable"
          },
          {
            "number": 30,
            "label": "Vanishing bathroom red circle",
            "category": "prop",
            "position_hint": "single wall surface beside the bathroom mirror",
            "base_layer_decision": "state_overlay_plot_cue",
            "render_role": "not_applicable",
            "top_down_legibility": "not_applicable"
          },
          {
            "number": 31,
            "label": "Melting face in tabletop photograph",
            "category": "prop",
            "position_hint": "photograph resting at one end of the dining table",
            "base_layer_decision": "state_overlay_plot_cue",
            "render_role": "not_applicable",
            "top_down_legibility": "not_applicable"
          },
          {
            "number": 32,
            "label": "Overturned household contents pile",
            "category": "prop",
            "position_hint": "single contiguous pile beside the living-room storage edge",
            "base_layer_decision": "state_overlay_transient_object",
            "render_role": "not_applicable",
            "top_down_legibility": "not_applicable"
          },
          {
            "number": 33,
            "label": "Fallen dining chair one",
            "category": "furniture",
            "position_hint": "floor immediately west of the dining table",
            "base_layer_decision": "state_overlay_transient_object",
            "render_role": "not_applicable",
            "top_down_legibility": "not_applicable"
          },
          {
            "number": 34,
            "label": "Fallen dining chair two",
            "category": "furniture",
            "position_hint": "floor immediately east of the dining table",
            "base_layer_decision": "state_overlay_transient_object",
            "render_role": "not_applicable",
            "top_down_legibility": "not_applicable"
          },
          {
            "number": 35,
            "label": "Open state of living window",
            "category": "opening",
            "position_hint": "small living window on the west wall",
            "base_layer_decision": "state_overlay_plot_cue",
            "render_role": "not_applicable",
            "top_down_legibility": "not_applicable"
          },
          {
            "number": 36,
            "label": "Intruder footprint trail",
            "category": "prop",
            "position_hint": "contiguous path from the entrance across the shared room",
            "base_layer_decision": "state_overlay_plot_cue",
            "render_role": "not_applicable",
            "top_down_legibility": "not_applicable"
          },
          {
            "number": 37,
            "label": "Wind-moved entrance door state",
            "category": "opening",
            "position_hint": "iron entrance door at the south wall threshold",
            "base_layer_decision": "state_overlay_plot_cue",
            "render_role": "not_applicable",
            "top_down_legibility": "not_applicable"
          }
        ],
        "target_unit_marker_numbers": [
          4
        ],
        "dominant_target_unit_marker_number": 4,
        "clean_background_expected": true,
        "diagnostics": []
      },
      "L06B06": {
        "bg_id": "L06B06",
        "fp_id": "fp_l06_rooftop_room_interior",
        "use_numbered_elements": [
          1,
          3,
          10,
          21
        ],
        "ignore_numbered_elements": [
          24,
          25,
          26,
          27,
          28,
          29,
          30,
          31,
          32,
          33,
          34,
          35,
          36,
          37
        ],
        "base_markers_to_reference": [
          {
            "number": 1,
            "label": "Shared living and dining area",
            "category": "area",
            "position_hint": "central and western portion of the rooftop dwelling",
            "base_layer_decision": "base_structural_unit",
            "render_role": "not_applicable",
            "top_down_legibility": "not_applicable"
          },
          {
            "number": 3,
            "label": "Mother bedroom",
            "category": "area",
            "position_hint": "northeast room adjoining the shared area",
            "base_layer_decision": "base_structural_unit",
            "render_role": "not_applicable",
            "top_down_legibility": "not_applicable"
          },
          {
            "number": 10,
            "label": "Mother bed",
            "category": "furniture",
            "position_hint": "north wall of the mother bedroom",
            "base_layer_decision": "base_persistent_furniture",
            "render_role": "not_applicable",
            "top_down_legibility": "not_applicable"
          },
          {
            "number": 21,
            "label": "Mother bedroom door",
            "category": "opening",
            "position_hint": "south wall of the mother bedroom",
            "base_layer_decision": "base_opening",
            "render_role": "not_applicable",
            "top_down_legibility": "not_applicable"
          }
        ],
        "transient_markers_to_describe": [],
        "ignored_state_overlay_markers": [
          {
            "number": 24,
            "label": "Blood pool and nearby spatter cluster",
            "category": "prop",
            "position_hint": "single contiguous floor area beside the daughter bed and curtained corner",
            "base_layer_decision": "state_overlay_plot_cue",
            "render_role": "not_applicable",
            "top_down_legibility": "not_applicable"
          },
          {
            "number": 25,
            "label": "Bloody footprint trail",
            "category": "prop",
            "position_hint": "contiguous path across the daughter bedroom floor toward the curtain",
            "base_layer_decision": "state_overlay_plot_cue",
            "render_role": "not_applicable",
            "top_down_legibility": "not_applicable"
          },
          {
            "number": 26,
            "label": "Body behind curtain",
            "category": "prop",
            "position_hint": "east corner of the daughter bedroom behind the window curtain",
            "base_layer_decision": "state_overlay_transient_object",
            "render_role": "not_applicable",
            "top_down_legibility": "not_applicable"
          },
          {
            "number": 27,
            "label": "Crumpled photograph by body",
            "category": "prop",
            "position_hint": "floor beside the body in the curtained bedroom corner",
            "base_layer_decision": "state_overlay_transient_object",
            "render_role": "not_applicable",
            "top_down_legibility": "not_applicable"
          },
          {
            "number": 28,
            "label": "Red circle above bed",
            "category": "prop",
            "position_hint": "north wall of the daughter bedroom directly above the bed",
            "base_layer_decision": "state_overlay_plot_cue",
            "render_role": "not_applicable",
            "top_down_legibility": "not_applicable"
          },
          {
            "number": 29,
            "label": "Pinned bloody photograph",
            "category": "prop",
            "position_hint": "center of the red circle above the daughter bed",
            "base_layer_decision": "state_overlay_transient_object",
            "render_role": "not_applicable",
            "top_down_legibility": "not_applicable"
          },
          {
            "number": 30,
            "label": "Vanishing bathroom red circle",
            "category": "prop",
            "position_hint": "single wall surface beside the bathroom mirror",
            "base_layer_decision": "state_overlay_plot_cue",
            "render_role": "not_applicable",
            "top_down_legibility": "not_applicable"
          },
          {
            "number": 31,
            "label": "Melting face in tabletop photograph",
            "category": "prop",
            "position_hint": "photograph resting at one end of the dining table",
            "base_layer_decision": "state_overlay_plot_cue",
            "render_role": "not_applicable",
            "top_down_legibility": "not_applicable"
          },
          {
            "number": 32,
            "label": "Overturned household contents pile",
            "category": "prop",
            "position_hint": "single contiguous pile beside the living-room storage edge",
            "base_layer_decision": "state_overlay_transient_object",
            "render_role": "not_applicable",
            "top_down_legibility": "not_applicable"
          },
          {
            "number": 33,
            "label": "Fallen dining chair one",
            "category": "furniture",
            "position_hint": "floor immediately west of the dining table",
            "base_layer_decision": "state_overlay_transient_object",
            "render_role": "not_applicable",
            "top_down_legibility": "not_applicable"
          },
          {
            "number": 34,
            "label": "Fallen dining chair two",
            "category": "furniture",
            "position_hint": "floor immediately east of the dining table",
            "base_layer_decision": "state_overlay_transient_object",
            "render_role": "not_applicable",
            "top_down_legibility": "not_applicable"
          },
          {
            "number": 35,
            "label": "Open state of living window",
            "category": "opening",
            "position_hint": "small living window on the west wall",
            "base_layer_decision": "state_overlay_plot_cue",
            "render_role": "not_applicable",
            "top_down_legibility": "not_applicable"
          },
          {
            "number": 36,
            "label": "Intruder footprint trail",
            "category": "prop",
            "position_hint": "contiguous path from the entrance across the shared room",
            "base_layer_decision": "state_overlay_plot_cue",
            "render_role": "not_applicable",
            "top_down_legibility": "not_applicable"
          },
          {
            "number": 37,
            "label": "Wind-moved entrance door state",
            "category": "opening",
            "position_hint": "iron entrance door at the south wall threshold",
            "base_layer_decision": "state_overlay_plot_cue",
            "render_role": "not_applicable",
            "top_down_legibility": "not_applicable"
          }
        ],
        "target_unit_marker_numbers": [
          1,
          3
        ],
        "dominant_target_unit_marker_number": null,
        "clean_background_expected": true,
        "diagnostics": [
          "multiple base_structural_unit markers in use_numbered_elements ([1, 3]); dominant_target_unit_marker_number left empty (W19B-1 lock — no lexical disambiguation)"
        ]
      },
      "L06B04": {
        "bg_id": "L06B04",
        "fp_id": "fp_l06_rooftop_room_interior",
        "use_numbered_elements": [
          1,
          5,
          12,
          19,
          20,
          23,
          30,
          31
        ],
        "ignore_numbered_elements": [
          24,
          25,
          26,
          27,
          28,
          29,
          32,
          33,
          34,
          35,
          36,
          37
        ],
        "base_markers_to_reference": [
          {
            "number": 1,
            "label": "Shared living and dining area",
            "category": "area",
            "position_hint": "central and western portion of the rooftop dwelling",
            "base_layer_decision": "base_structural_unit",
            "render_role": "not_applicable",
            "top_down_legibility": "not_applicable"
          },
          {
            "number": 5,
            "label": "Compact bathroom",
            "category": "area",
            "position_hint": "east-central service room between the bedrooms",
            "base_layer_decision": "base_structural_unit",
            "render_role": "not_applicable",
            "top_down_legibility": "not_applicable"
          },
          {
            "number": 12,
            "label": "Dining table",
            "category": "furniture",
            "position_hint": "center of the shared living and dining area",
            "base_layer_decision": "base_persistent_furniture",
            "render_role": "not_applicable",
            "top_down_legibility": "not_applicable"
          },
          {
            "number": 19,
            "label": "Bathroom washbasin",
            "category": "furniture",
            "position_hint": "north wall of the compact bathroom",
            "base_layer_decision": "base_persistent_fixture",
            "render_role": "not_applicable",
            "top_down_legibility": "not_applicable"
          },
          {
            "number": 20,
            "label": "Bathroom toilet",
            "category": "furniture",
            "position_hint": "east side of the compact bathroom",
            "base_layer_decision": "base_persistent_fixture",
            "render_role": "not_applicable",
            "top_down_legibility": "not_applicable"
          },
          {
            "number": 23,
            "label": "Bathroom door",
            "category": "opening",
            "position_hint": "west wall of the compact bathroom",
            "base_layer_decision": "base_opening",
            "render_role": "not_applicable",
            "top_down_legibility": "not_applicable"
          }
        ],
        "transient_markers_to_describe": [
          {
            "number": 30,
            "label": "Vanishing bathroom red circle",
            "category": "prop",
            "position_hint": "single wall surface beside the bathroom mirror",
            "base_layer_decision": "state_overlay_plot_cue",
            "render_role": "not_applicable",
            "top_down_legibility": "not_applicable"
          },
          {
            "number": 31,
            "label": "Melting face in tabletop photograph",
            "category": "prop",
            "position_hint": "photograph resting at one end of the dining table",
            "base_layer_decision": "state_overlay_plot_cue",
            "render_role": "not_applicable",
            "top_down_legibility": "not_applicable"
          }
        ],
        "ignored_state_overlay_markers": [
          {
            "number": 24,
            "label": "Blood pool and nearby spatter cluster",
            "category": "prop",
            "position_hint": "single contiguous floor area beside the daughter bed and curtained corner",
            "base_layer_decision": "state_overlay_plot_cue",
            "render_role": "not_applicable",
            "top_down_legibility": "not_applicable"
          },
          {
            "number": 25,
            "label": "Bloody footprint trail",
            "category": "prop",
            "position_hint": "contiguous path across the daughter bedroom floor toward the curtain",
            "base_layer_decision": "state_overlay_plot_cue",
            "render_role": "not_applicable",
            "top_down_legibility": "not_applicable"
          },
          {
            "number": 26,
            "label": "Body behind curtain",
            "category": "prop",
            "position_hint": "east corner of the daughter bedroom behind the window curtain",
            "base_layer_decision": "state_overlay_transient_object",
            "render_role": "not_applicable",
            "top_down_legibility": "not_applicable"
          },
          {
            "number": 27,
            "label": "Crumpled photograph by body",
            "category": "prop",
            "position_hint": "floor beside the body in the curtained bedroom corner",
            "base_layer_decision": "state_overlay_transient_object",
            "render_role": "not_applicable",
            "top_down_legibility": "not_applicable"
          },
          {
            "number": 28,
            "label": "Red circle above bed",
            "category": "prop",
            "position_hint": "north wall of the daughter bedroom directly above the bed",
            "base_layer_decision": "state_overlay_plot_cue",
            "render_role": "not_applicable",
            "top_down_legibility": "not_applicable"
          },
          {
            "number": 29,
            "label": "Pinned bloody photograph",
            "category": "prop",
            "position_hint": "center of the red circle above the daughter bed",
            "base_layer_decision": "state_overlay_transient_object",
            "render_role": "not_applicable",
            "top_down_legibility": "not_applicable"
          },
          {
            "number": 32,
            "label": "Overturned household contents pile",
            "category": "prop",
            "position_hint": "single contiguous pile beside the living-room storage edge",
            "base_layer_decision": "state_overlay_transient_object",
            "render_role": "not_applicable",
            "top_down_legibility": "not_applicable"
          },
          {
            "number": 33,
            "label": "Fallen dining chair one",
            "category": "furniture",
            "position_hint": "floor immediately west of the dining table",
            "base_layer_decision": "state_overlay_transient_object",
            "render_role": "not_applicable",
            "top_down_legibility": "not_applicable"
          },
          {
            "number": 34,
            "label": "Fallen dining chair two",
            "category": "furniture",
            "position_hint": "floor immediately east of the dining table",
            "base_layer_decision": "state_overlay_transient_object",
            "render_role": "not_applicable",
            "top_down_legibility": "not_applicable"
          },
          {
            "number": 35,
            "label": "Open state of living window",
            "category": "opening",
            "position_hint": "small living window on the west wall",
            "base_layer_decision": "state_overlay_plot_cue",
            "render_role": "not_applicable",
            "top_down_legibility": "not_applicable"
          },
          {
            "number": 36,
            "label": "Intruder footprint trail",
            "category": "prop",
            "position_hint": "contiguous path from the entrance across the shared room",
            "base_layer_decision": "state_overlay_plot_cue",
            "render_role": "not_applicable",
            "top_down_legibility": "not_applicable"
          },
          {
            "number": 37,
            "label": "Wind-moved entrance door state",
            "category": "opening",
            "position_hint": "iron entrance door at the south wall threshold",
            "base_layer_decision": "state_overlay_plot_cue",
            "render_role": "not_applicable",
            "top_down_legibility": "not_applicable"
          }
        ],
        "target_unit_marker_numbers": [
          1,
          5
        ],
        "dominant_target_unit_marker_number": null,
        "clean_background_expected": false,
        "diagnostics": [
          "multiple base_structural_unit markers in use_numbered_elements ([1, 5]); dominant_target_unit_marker_number left empty (W19B-1 lock — no lexical disambiguation)"
        ]
      },
      "L06B01": {
        "bg_id": "L06B01",
        "fp_id": "fp_l06_rooftop_room_interior",
        "use_numbered_elements": [
          4,
          9,
          11,
          22,
          28,
          29
        ],
        "ignore_numbered_elements": [
          24,
          25,
          26,
          27,
          30,
          31,
          32,
          33,
          34,
          35,
          36,
          37
        ],
        "base_markers_to_reference": [
          {
            "number": 4,
            "label": "Daughter bedroom",
            "category": "area",
            "position_hint": "southeast room adjoining the shared area",
            "base_layer_decision": "base_structural_unit",
            "render_role": "not_applicable",
            "top_down_legibility": "not_applicable"
          },
          {
            "number": 9,
            "label": "Curtained bedroom window",
            "category": "opening",
            "position_hint": "east wall of the daughter bedroom",
            "base_layer_decision": "base_opening",
            "render_role": "not_applicable",
            "top_down_legibility": "not_applicable"
          },
          {
            "number": 11,
            "label": "Daughter bed",
            "category": "furniture",
            "position_hint": "north wall of the daughter bedroom",
            "base_layer_decision": "base_persistent_furniture",
            "render_role": "not_applicable",
            "top_down_legibility": "not_applicable"
          },
          {
            "number": 22,
            "label": "Daughter bedroom door",
            "category": "opening",
            "position_hint": "west wall of the daughter bedroom",
            "base_layer_decision": "base_opening",
            "render_role": "not_applicable",
            "top_down_legibility": "not_applicable"
          }
        ],
        "transient_markers_to_describe": [
          {
            "number": 28,
            "label": "Red circle above bed",
            "category": "prop",
            "position_hint": "north wall of the daughter bedroom directly above the bed",
            "base_layer_decision": "state_overlay_plot_cue",
            "render_role": "not_applicable",
            "top_down_legibility": "not_applicable"
          },
          {
            "number": 29,
            "label": "Pinned bloody photograph",
            "category": "prop",
            "position_hint": "center of the red circle above the daughter bed",
            "base_layer_decision": "state_overlay_transient_object",
            "render_role": "not_applicable",
            "top_down_legibility": "not_applicable"
          }
        ],
        "ignored_state_overlay_markers": [
          {
            "number": 24,
            "label": "Blood pool and nearby spatter cluster",
            "category": "prop",
            "position_hint": "single contiguous floor area beside the daughter bed and curtained corner",
            "base_layer_decision": "state_overlay_plot_cue",
            "render_role": "not_applicable",
            "top_down_legibility": "not_applicable"
          },
          {
            "number": 25,
            "label": "Bloody footprint trail",
            "category": "prop",
            "position_hint": "contiguous path across the daughter bedroom floor toward the curtain",
            "base_layer_decision": "state_overlay_plot_cue",
            "render_role": "not_applicable",
            "top_down_legibility": "not_applicable"
          },
          {
            "number": 26,
            "label": "Body behind curtain",
            "category": "prop",
            "position_hint": "east corner of the daughter bedroom behind the window curtain",
            "base_layer_decision": "state_overlay_transient_object",
            "render_role": "not_applicable",
            "top_down_legibility": "not_applicable"
          },
          {
            "number": 27,
            "label": "Crumpled photograph by body",
            "category": "prop",
            "position_hint": "floor beside the body in the curtained bedroom corner",
            "base_layer_decision": "state_overlay_transient_object",
            "render_role": "not_applicable",
            "top_down_legibility": "not_applicable"
          },
          {
            "number": 30,
            "label": "Vanishing bathroom red circle",
            "category": "prop",
            "position_hint": "single wall surface beside the bathroom mirror",
            "base_layer_decision": "state_overlay_plot_cue",
            "render_role": "not_applicable",
            "top_down_legibility": "not_applicable"
          },
          {
            "number": 31,
            "label": "Melting face in tabletop photograph",
            "category": "prop",
            "position_hint": "photograph resting at one end of the dining table",
            "base_layer_decision": "state_overlay_plot_cue",
            "render_role": "not_applicable",
            "top_down_legibility": "not_applicable"
          },
          {
            "number": 32,
            "label": "Overturned household contents pile",
            "category": "prop",
            "position_hint": "single contiguous pile beside the living-room storage edge",
            "base_layer_decision": "state_overlay_transient_object",
            "render_role": "not_applicable",
            "top_down_legibility": "not_applicable"
          },
          {
            "number": 33,
            "label": "Fallen dining chair one",
            "category": "furniture",
            "position_hint": "floor immediately west of the dining table",
            "base_layer_decision": "state_overlay_transient_object",
            "render_role": "not_applicable",
            "top_down_legibility": "not_applicable"
          },
          {
            "number": 34,
            "label": "Fallen dining chair two",
            "category": "furniture",
            "position_hint": "floor immediately east of the dining table",
            "base_layer_decision": "state_overlay_transient_object",
            "render_role": "not_applicable",
            "top_down_legibility": "not_applicable"
          },
          {
            "number": 35,
            "label": "Open state of living window",
            "category": "opening",
            "position_hint": "small living window on the west wall",
            "base_layer_decision": "state_overlay_plot_cue",
            "render_role": "not_applicable",
            "top_down_legibility": "not_applicable"
          },
          {
            "number": 36,
            "label": "Intruder footprint trail",
            "category": "prop",
            "position_hint": "contiguous path from the entrance across the shared room",
            "base_layer_decision": "state_overlay_plot_cue",
            "render_role": "not_applicable",
            "top_down_legibility": "not_applicable"
          },
          {
            "number": 37,
            "label": "Wind-moved entrance door state",
            "category": "opening",
            "position_hint": "iron entrance door at the south wall threshold",
            "base_layer_decision": "state_overlay_plot_cue",
            "render_role": "not_applicable",
            "top_down_legibility": "not_applicable"
          }
        ],
        "target_unit_marker_numbers": [
          4
        ],
        "dominant_target_unit_marker_number": 4,
        "clean_background_expected": false,
        "diagnostics": []
      },
      "L06B03": {
        "bg_id": "L06B03",
        "fp_id": "fp_l06_rooftop_room_interior",
        "use_numbered_elements": [
          1,
          4,
          6,
          7,
          8,
          12,
          13,
          14,
          17,
          22,
          28,
          29,
          32,
          33,
          34,
          35,
          36
        ],
        "ignore_numbered_elements": [
          24,
          25,
          26,
          27,
          30,
          31,
          37
        ],
        "base_markers_to_reference": [
          {
            "number": 1,
            "label": "Shared living and dining area",
            "category": "area",
            "position_hint": "central and western portion of the rooftop dwelling",
            "base_layer_decision": "base_structural_unit",
            "render_role": "not_applicable",
            "top_down_legibility": "not_applicable"
          },
          {
            "number": 4,
            "label": "Daughter bedroom",
            "category": "area",
            "position_hint": "southeast room adjoining the shared area",
            "base_layer_decision": "base_structural_unit",
            "render_role": "not_applicable",
            "top_down_legibility": "not_applicable"
          },
          {
            "number": 6,
            "label": "Entrance threshold",
            "category": "area",
            "position_hint": "southwest corner inside the rooftop entrance",
            "base_layer_decision": "base_structural_unit",
            "render_role": "not_applicable",
            "top_down_legibility": "not_applicable"
          },
          {
            "number": 7,
            "label": "Iron entrance door",
            "category": "opening",
            "position_hint": "south wall of the entrance threshold",
            "base_layer_decision": "base_opening",
            "render_role": "not_applicable",
            "top_down_legibility": "not_applicable"
          },
          {
            "number": 8,
            "label": "Small living window",
            "category": "opening",
            "position_hint": "west wall of the shared living area",
            "base_layer_decision": "base_opening",
            "render_role": "not_applicable",
            "top_down_legibility": "not_applicable"
          },
          {
            "number": 12,
            "label": "Dining table",
            "category": "furniture",
            "position_hint": "center of the shared living and dining area",
            "base_layer_decision": "base_persistent_furniture",
            "render_role": "not_applicable",
            "top_down_legibility": "not_applicable"
          },
          {
            "number": 13,
            "label": "Dining chair one",
            "category": "furniture",
            "position_hint": "west side of the dining table",
            "base_layer_decision": "base_persistent_furniture",
            "render_role": "not_applicable",
            "top_down_legibility": "not_applicable"
          },
          {
            "number": 14,
            "label": "Dining chair two",
            "category": "furniture",
            "position_hint": "east side of the dining table",
            "base_layer_decision": "base_persistent_furniture",
            "render_role": "not_applicable",
            "top_down_legibility": "not_applicable"
          },
          {
            "number": 17,
            "label": "Television stand",
            "category": "furniture",
            "position_hint": "north wall of the shared area opposite the seating space",
            "base_layer_decision": "base_persistent_furniture",
            "render_role": "not_applicable",
            "top_down_legibility": "not_applicable"
          },
          {
            "number": 22,
            "label": "Daughter bedroom door",
            "category": "opening",
            "position_hint": "west wall of the daughter bedroom",
            "base_layer_decision": "base_opening",
            "render_role": "not_applicable",
            "top_down_legibility": "not_applicable"
          }
        ],
        "transient_markers_to_describe": [
          {
            "number": 28,
            "label": "Red circle above bed",
            "category": "prop",
            "position_hint": "north wall of the daughter bedroom directly above the bed",
            "base_layer_decision": "state_overlay_plot_cue",
            "render_role": "not_applicable",
            "top_down_legibility": "not_applicable"
          },
          {
            "number": 29,
            "label": "Pinned bloody photograph",
            "category": "prop",
            "position_hint": "center of the red circle above the daughter bed",
            "base_layer_decision": "state_overlay_transient_object",
            "render_role": "not_applicable",
            "top_down_legibility": "not_applicable"
          },
          {
            "number": 32,
            "label": "Overturned household contents pile",
            "category": "prop",
            "position_hint": "single contiguous pile beside the living-room storage edge",
            "base_layer_decision": "state_overlay_transient_object",
            "render_role": "not_applicable",
            "top_down_legibility": "not_applicable"
          },
          {
            "number": 33,
            "label": "Fallen dining chair one",
            "category": "furniture",
            "position_hint": "floor immediately west of the dining table",
            "base_layer_decision": "state_overlay_transient_object",
            "render_role": "not_applicable",
            "top_down_legibility": "not_applicable"
          },
          {
            "number": 34,
            "label": "Fallen dining chair two",
            "category": "furniture",
            "position_hint": "floor immediately east of the dining table",
            "base_layer_decision": "state_overlay_transient_object",
            "render_role": "not_applicable",
            "top_down_legibility": "not_applicable"
          },
          {
            "number": 35,
            "label": "Open state of living window",
            "category": "opening",
            "position_hint": "small living window on the west wall",
            "base_layer_decision": "state_overlay_plot_cue",
            "render_role": "not_applicable",
            "top_down_legibility": "not_applicable"
          },
          {
            "number": 36,
            "label": "Intruder footprint trail",
            "category": "prop",
            "position_hint": "contiguous path from the entrance across the shared room",
            "base_layer_decision": "state_overlay_plot_cue",
            "render_role": "not_applicable",
            "top_down_legibility": "not_applicable"
          }
        ],
        "ignored_state_overlay_markers": [
          {
            "number": 24,
            "label": "Blood pool and nearby spatter cluster",
            "category": "prop",
            "position_hint": "single contiguous floor area beside the daughter bed and curtained corner",
            "base_layer_decision": "state_overlay_plot_cue",
            "render_role": "not_applicable",
            "top_down_legibility": "not_applicable"
          },
          {
            "number": 25,
            "label": "Bloody footprint trail",
            "category": "prop",
            "position_hint": "contiguous path across the daughter bedroom floor toward the curtain",
            "base_layer_decision": "state_overlay_plot_cue",
            "render_role": "not_applicable",
            "top_down_legibility": "not_applicable"
          },
          {
            "number": 26,
            "label": "Body behind curtain",
            "category": "prop",
            "position_hint": "east corner of the daughter bedroom behind the window curtain",
            "base_layer_decision": "state_overlay_transient_object",
            "render_role": "not_applicable",
            "top_down_legibility": "not_applicable"
          },
          {
            "number": 27,
            "label": "Crumpled photograph by body",
            "category": "prop",
            "position_hint": "floor beside the body in the curtained bedroom corner",
            "base_layer_decision": "state_overlay_transient_object",
            "render_role": "not_applicable",
            "top_down_legibility": "not_applicable"
          },
          {
            "number": 30,
            "label": "Vanishing bathroom red circle",
            "category": "prop",
            "position_hint": "single wall surface beside the bathroom mirror",
            "base_layer_decision": "state_overlay_plot_cue",
            "render_role": "not_applicable",
            "top_down_legibility": "not_applicable"
          },
          {
            "number": 31,
            "label": "Melting face in tabletop photograph",
            "category": "prop",
            "position_hint": "photograph resting at one end of the dining table",
            "base_layer_decision": "state_overlay_plot_cue",
            "render_role": "not_applicable",
            "top_down_legibility": "not_applicable"
          },
          {
            "number": 37,
            "label": "Wind-moved entrance door state",
            "category": "opening",
            "position_hint": "iron entrance door at the south wall threshold",
            "base_layer_decision": "state_overlay_plot_cue",
            "render_role": "not_applicable",
            "top_down_legibility": "not_applicable"
          }
        ],
        "target_unit_marker_numbers": [
          1,
          4,
          6
        ],
        "dominant_target_unit_marker_number": null,
        "clean_background_expected": false,
        "diagnostics": [
          "multiple base_structural_unit markers in use_numbered_elements ([1, 4, 6]); dominant_target_unit_marker_number left empty (W19B-1 lock — no lexical disambiguation)"
        ]
      },
      "L06B02": {
        "bg_id": "L06B02",
        "fp_id": "fp_l06_rooftop_room_interior",
        "use_numbered_elements": [
          1,
          6,
          7,
          8,
          12,
          17,
          37
        ],
        "ignore_numbered_elements": [
          24,
          25,
          26,
          27,
          28,
          29,
          30,
          31,
          32,
          33,
          34,
          35,
          36
        ],
        "base_markers_to_reference": [
          {
            "number": 1,
            "label": "Shared living and dining area",
            "category": "area",
            "position_hint": "central and western portion of the rooftop dwelling",
            "base_layer_decision": "base_structural_unit",
            "render_role": "not_applicable",
            "top_down_legibility": "not_applicable"
          },
          {
            "number": 6,
            "label": "Entrance threshold",
            "category": "area",
            "position_hint": "southwest corner inside the rooftop entrance",
            "base_layer_decision": "base_structural_unit",
            "render_role": "not_applicable",
            "top_down_legibility": "not_applicable"
          },
          {
            "number": 7,
            "label": "Iron entrance door",
            "category": "opening",
            "position_hint": "south wall of the entrance threshold",
            "base_layer_decision": "base_opening",
            "render_role": "not_applicable",
            "top_down_legibility": "not_applicable"
          },
          {
            "number": 8,
            "label": "Small living window",
            "category": "opening",
            "position_hint": "west wall of the shared living area",
            "base_layer_decision": "base_opening",
            "render_role": "not_applicable",
            "top_down_legibility": "not_applicable"
          },
          {
            "number": 12,
            "label": "Dining table",
            "category": "furniture",
            "position_hint": "center of the shared living and dining area",
            "base_layer_decision": "base_persistent_furniture",
            "render_role": "not_applicable",
            "top_down_legibility": "not_applicable"
          },
          {
            "number": 17,
            "label": "Television stand",
            "category": "furniture",
            "position_hint": "north wall of the shared area opposite the seating space",
            "base_layer_decision": "base_persistent_furniture",
            "render_role": "not_applicable",
            "top_down_legibility": "not_applicable"
          }
        ],
        "transient_markers_to_describe": [
          {
            "number": 37,
            "label": "Wind-moved entrance door state",
            "category": "opening",
            "position_hint": "iron entrance door at the south wall threshold",
            "base_layer_decision": "state_overlay_plot_cue",
            "render_role": "not_applicable",
            "top_down_legibility": "not_applicable"
          }
        ],
        "ignored_state_overlay_markers": [
          {
            "number": 24,
            "label": "Blood pool and nearby spatter cluster",
            "category": "prop",
            "position_hint": "single contiguous floor area beside the daughter bed and curtained corner",
            "base_layer_decision": "state_overlay_plot_cue",
            "render_role": "not_applicable",
            "top_down_legibility": "not_applicable"
          },
          {
            "number": 25,
            "label": "Bloody footprint trail",
            "category": "prop",
            "position_hint": "contiguous path across the daughter bedroom floor toward the curtain",
            "base_layer_decision": "state_overlay_plot_cue",
            "render_role": "not_applicable",
            "top_down_legibility": "not_applicable"
          },
          {
            "number": 26,
            "label": "Body behind curtain",
            "category": "prop",
            "position_hint": "east corner of the daughter bedroom behind the window curtain",
            "base_layer_decision": "state_overlay_transient_object",
            "render_role": "not_applicable",
            "top_down_legibility": "not_applicable"
          },
          {
            "number": 27,
            "label": "Crumpled photograph by body",
            "category": "prop",
            "position_hint": "floor beside the body in the curtained bedroom corner",
            "base_layer_decision": "state_overlay_transient_object",
            "render_role": "not_applicable",
            "top_down_legibility": "not_applicable"
          },
          {
            "number": 28,
            "label": "Red circle above bed",
            "category": "prop",
            "position_hint": "north wall of the daughter bedroom directly above the bed",
            "base_layer_decision": "state_overlay_plot_cue",
            "render_role": "not_applicable",
            "top_down_legibility": "not_applicable"
          },
          {
            "number": 29,
            "label": "Pinned bloody photograph",
            "category": "prop",
            "position_hint": "center of the red circle above the daughter bed",
            "base_layer_decision": "state_overlay_transient_object",
            "render_role": "not_applicable",
            "top_down_legibility": "not_applicable"
          },
          {
            "number": 30,
            "label": "Vanishing bathroom red circle",
            "category": "prop",
            "position_hint": "single wall surface beside the bathroom mirror",
            "base_layer_decision": "state_overlay_plot_cue",
            "render_role": "not_applicable",
            "top_down_legibility": "not_applicable"
          },
          {
            "number": 31,
            "label": "Melting face in tabletop photograph",
            "category": "prop",
            "position_hint": "photograph resting at one end of the dining table",
            "base_layer_decision": "state_overlay_plot_cue",
            "render_role": "not_applicable",
            "top_down_legibility": "not_applicable"
          },
          {
            "number": 32,
            "label": "Overturned household contents pile",
            "category": "prop",
            "position_hint": "single contiguous pile beside the living-room storage edge",
            "base_layer_decision": "state_overlay_transient_object",
            "render_role": "not_applicable",
            "top_down_legibility": "not_applicable"
          },
          {
            "number": 33,
            "label": "Fallen dining chair one",
            "category": "furniture",
            "position_hint": "floor immediately west of the dining table",
            "base_layer_decision": "state_overlay_transient_object",
            "render_role": "not_applicable",
            "top_down_legibility": "not_applicable"
          },
          {
            "number": 34,
            "label": "Fallen dining chair two",
            "category": "furniture",
            "position_hint": "floor immediately east of the dining table",
            "base_layer_decision": "state_overlay_transient_object",
            "render_role": "not_applicable",
            "top_down_legibility": "not_applicable"
          },
          {
            "number": 35,
            "label": "Open state of living window",
            "category": "opening",
            "position_hint": "small living window on the west wall",
            "base_layer_decision": "state_overlay_plot_cue",
            "render_role": "not_applicable",
            "top_down_legibility": "not_applicable"
          },
          {
            "number": 36,
            "label": "Intruder footprint trail",
            "category": "prop",
            "position_hint": "contiguous path from the entrance across the shared room",
            "base_layer_decision": "state_overlay_plot_cue",
            "render_role": "not_applicable",
            "top_down_legibility": "not_applicable"
          }
        ],
        "target_unit_marker_numbers": [
          1,
          6
        ],
        "dominant_target_unit_marker_number": null,
        "clean_background_expected": false,
        "diagnostics": [
          "multiple base_structural_unit markers in use_numbered_elements ([1, 6]); dominant_target_unit_marker_number left empty (W19B-1 lock — no lexical disambiguation)"
        ]
      },
      "L11B02": {
        "bg_id": "L11B02",
        "fp_id": "fp_l11_market_entrance",
        "use_numbered_elements": [
          1,
          2,
          3,
          4,
          5,
          6,
          7,
          11,
          12
        ],
        "ignore_numbered_elements": [],
        "base_markers_to_reference": [
          {
            "number": 1,
            "label": "exterior forecourt",
            "category": "area",
            "position_hint": "south side of the plan outside the market facade",
            "base_layer_decision": "base_structural_unit",
            "render_role": "not_applicable",
            "top_down_legibility": "not_applicable"
          },
          {
            "number": 2,
            "label": "entrance threshold",
            "category": "area",
            "position_hint": "center of the south facade between exterior forecourt and retail interior",
            "base_layer_decision": "base_structural_unit",
            "render_role": "not_applicable",
            "top_down_legibility": "not_applicable"
          },
          {
            "number": 3,
            "label": "main retail aisle",
            "category": "area",
            "position_hint": "central interior strip extending north from the entrance threshold",
            "base_layer_decision": "base_structural_unit",
            "render_role": "not_applicable",
            "top_down_legibility": "not_applicable"
          },
          {
            "number": 4,
            "label": "storefront facade edge",
            "category": "area",
            "position_hint": "narrow east-west band separating the forecourt from the interior",
            "base_layer_decision": "base_structural_unit",
            "render_role": "not_applicable",
            "top_down_legibility": "not_applicable"
          },
          {
            "number": 5,
            "label": "sliding entrance door",
            "category": "opening",
            "position_hint": "center of the storefront facade at the entrance threshold",
            "base_layer_decision": "base_opening",
            "render_role": "not_applicable",
            "top_down_legibility": "not_applicable"
          },
          {
            "number": 6,
            "label": "storefront glazing run",
            "category": "opening",
            "position_hint": "south facade immediately east of the sliding entrance door",
            "base_layer_decision": "base_opening",
            "render_role": "not_applicable",
            "top_down_legibility": "not_applicable"
          },
          {
            "number": 7,
            "label": "exterior CCTV camera",
            "category": "prop",
            "position_hint": "facade edge above and east of the sliding entrance door, aimed across the forecourt",
            "base_layer_decision": "base_persistent_fixture",
            "render_role": "not_applicable",
            "top_down_legibility": "not_applicable"
          }
        ],
        "transient_markers_to_describe": [
          {
            "number": 11,
            "label": "parked bicycle",
            "category": "prop",
            "position_hint": "exterior forecourt beside the entrance facade",
            "base_layer_decision": "state_overlay_transient_object",
            "render_role": "not_applicable",
            "top_down_legibility": "not_applicable"
          },
          {
            "number": 12,
            "label": "handheld smartphone",
            "category": "prop",
            "position_hint": "exterior forecourt near the entrance during phone activity",
            "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)"
        ]
      },
      "L11B04": {
        "bg_id": "L11B04",
        "fp_id": "fp_l11_market_entrance",
        "use_numbered_elements": [
          2,
          3,
          5,
          8,
          9,
          10
        ],
        "ignore_numbered_elements": [
          11,
          12
        ],
        "base_markers_to_reference": [
          {
            "number": 2,
            "label": "entrance threshold",
            "category": "area",
            "position_hint": "center of the south facade between exterior forecourt and retail interior",
            "base_layer_decision": "base_structural_unit",
            "render_role": "not_applicable",
            "top_down_legibility": "not_applicable"
          },
          {
            "number": 3,
            "label": "main retail aisle",
            "category": "area",
            "position_hint": "central interior strip extending north from the entrance threshold",
            "base_layer_decision": "base_structural_unit",
            "render_role": "not_applicable",
            "top_down_legibility": "not_applicable"
          },
          {
            "number": 5,
            "label": "sliding entrance door",
            "category": "opening",
            "position_hint": "center of the storefront facade at the entrance threshold",
            "base_layer_decision": "base_opening",
            "render_role": "not_applicable",
            "top_down_legibility": "not_applicable"
          },
          {
            "number": 8,
            "label": "left retail shelf unit",
            "category": "furniture",
            "position_hint": "west side of the main retail aisle, one contiguous rectangular unit",
            "base_layer_decision": "base_persistent_furniture",
            "render_role": "not_applicable",
            "top_down_legibility": "not_applicable"
          },
          {
            "number": 9,
            "label": "right retail shelf unit",
            "category": "furniture",
            "position_hint": "east side of the main retail aisle, one contiguous rectangular unit",
            "base_layer_decision": "base_persistent_furniture",
            "render_role": "not_applicable",
            "top_down_legibility": "not_applicable"
          },
          {
            "number": 10,
            "label": "fluorescent ceiling fixture",
            "category": "prop",
            "position_hint": "centerline above the inner portion of the main retail 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": 11,
            "label": "parked bicycle",
            "category": "prop",
            "position_hint": "exterior forecourt beside the entrance facade",
            "base_layer_decision": "state_overlay_transient_object",
            "render_role": "not_applicable",
            "top_down_legibility": "not_applicable"
          },
          {
            "number": 12,
            "label": "handheld smartphone",
            "category": "prop",
            "position_hint": "exterior forecourt near the entrance during phone activity",
            "base_layer_decision": "state_overlay_transient_object",
            "render_role": "not_applicable",
            "top_down_legibility": "not_applicable"
          }
        ],
        "target_unit_marker_numbers": [
          2,
          3
        ],
        "dominant_target_unit_marker_number": null,
        "clean_background_expected": true,
        "diagnostics": [
          "multiple base_structural_unit markers in use_numbered_elements ([2, 3]); dominant_target_unit_marker_number left empty (W19B-1 lock — no lexical disambiguation)"
        ]
      },
      "L11B03": {
        "bg_id": "L11B03",
        "fp_id": "fp_l11_market_entrance",
        "use_numbered_elements": [
          1,
          2,
          4,
          5,
          6,
          7,
          11,
          12
        ],
        "ignore_numbered_elements": [],
        "base_markers_to_reference": [
          {
            "number": 1,
            "label": "exterior forecourt",
            "category": "area",
            "position_hint": "south side of the plan outside the market facade",
            "base_layer_decision": "base_structural_unit",
            "render_role": "not_applicable",
            "top_down_legibility": "not_applicable"
          },
          {
            "number": 2,
            "label": "entrance threshold",
            "category": "area",
            "position_hint": "center of the south facade between exterior forecourt and retail interior",
            "base_layer_decision": "base_structural_unit",
            "render_role": "not_applicable",
            "top_down_legibility": "not_applicable"
          },
          {
            "number": 4,
            "label": "storefront facade edge",
            "category": "area",
            "position_hint": "narrow east-west band separating the forecourt from the interior",
            "base_layer_decision": "base_structural_unit",
            "render_role": "not_applicable",
            "top_down_legibility": "not_applicable"
          },
          {
            "number": 5,
            "label": "sliding entrance door",
            "category": "opening",
            "position_hint": "center of the storefront facade at the entrance threshold",
            "base_layer_decision": "base_opening",
            "render_role": "not_applicable",
            "top_down_legibility": "not_applicable"
          },
          {
            "number": 6,
            "label": "storefront glazing run",
            "category": "opening",
            "position_hint": "south facade immediately east of the sliding entrance door",
            "base_layer_decision": "base_opening",
            "render_role": "not_applicable",
            "top_down_legibility": "not_applicable"
          },
          {
            "number": 7,
            "label": "exterior CCTV camera",
            "category": "prop",
            "position_hint": "facade edge above and east of the sliding entrance door, aimed across the forecourt",
            "base_layer_decision": "base_persistent_fixture",
            "render_role": "not_applicable",
            "top_down_legibility": "not_applicable"
          }
        ],
        "transient_markers_to_describe": [
          {
            "number": 11,
            "label": "parked bicycle",
            "category": "prop",
            "position_hint": "exterior forecourt beside the entrance facade",
            "base_layer_decision": "state_overlay_transient_object",
            "render_role": "not_applicable",
            "top_down_legibility": "not_applicable"
          },
          {
            "number": 12,
            "label": "handheld smartphone",
            "category": "prop",
            "position_hint": "exterior forecourt near the entrance during phone activity",
            "base_layer_decision": "state_overlay_transient_object",
            "render_role": "not_applicable",
            "top_down_legibility": "not_applicable"
          }
        ],
        "ignored_state_overlay_markers": [],
        "target_unit_marker_numbers": [
          1,
          2,
          4
        ],
        "dominant_target_unit_marker_number": null,
        "clean_background_expected": false,
        "diagnostics": [
          "multiple base_structural_unit markers in use_numbered_elements ([1, 2, 4]); dominant_target_unit_marker_number left empty (W19B-1 lock — no lexical disambiguation)"
        ]
      },
      "L14B01": {
        "bg_id": "L14B01",
        "fp_id": "fp_l14_security_room",
        "use_numbered_elements": [
          1,
          2,
          3,
          4,
          5,
          6,
          7,
          8,
          9,
          10
        ],
        "ignore_numbered_elements": [],
        "base_markers_to_reference": [
          {
            "number": 1,
            "label": "service workstation zone",
            "category": "area",
            "position_hint": "north half of the security room around the CCTV console",
            "base_layer_decision": "base_structural_unit",
            "render_role": "not_applicable",
            "top_down_legibility": "not_applicable"
          },
          {
            "number": 2,
            "label": "shared viewing zone",
            "category": "area",
            "position_hint": "central and south-central portion of the security room behind the operator chair",
            "base_layer_decision": "base_structural_unit",
            "render_role": "not_applicable",
            "top_down_legibility": "not_applicable"
          },
          {
            "number": 3,
            "label": "entrance threshold zone",
            "category": "area",
            "position_hint": "southwest corner immediately inside the office door",
            "base_layer_decision": "base_structural_unit",
            "render_role": "not_applicable",
            "top_down_legibility": "not_applicable"
          },
          {
            "number": 4,
            "label": "office entrance door",
            "category": "opening",
            "position_hint": "west wall near the southwest corner, shown with a single inward swing",
            "base_layer_decision": "base_opening",
            "render_role": "not_applicable",
            "top_down_legibility": "not_applicable"
          },
          {
            "number": 5,
            "label": "built-in CCTV console",
            "category": "furniture",
            "position_hint": "centered as one continuous desk run against the north wall",
            "base_layer_decision": "base_persistent_fixture",
            "render_role": "not_applicable",
            "top_down_legibility": "not_applicable"
          },
          {
            "number": 6,
            "label": "contiguous monitor bank",
            "category": "prop",
            "position_hint": "centered along the north edge of number 5 as one connected monitor array",
            "base_layer_decision": "base_persistent_fixture",
            "render_role": "not_applicable",
            "top_down_legibility": "not_applicable"
          },
          {
            "number": 7,
            "label": "operator chair",
            "category": "furniture",
            "position_hint": "directly south of number 5, facing number 6",
            "base_layer_decision": "base_persistent_furniture",
            "render_role": "not_applicable",
            "top_down_legibility": "not_applicable"
          },
          {
            "number": 8,
            "label": "left visitor chair",
            "category": "furniture",
            "position_hint": "southwest side of the shared viewing zone, behind and left of number 7",
            "base_layer_decision": "base_persistent_furniture",
            "render_role": "not_applicable",
            "top_down_legibility": "not_applicable"
          },
          {
            "number": 9,
            "label": "right visitor chair",
            "category": "furniture",
            "position_hint": "southeast side of the shared viewing zone, behind and right of number 7",
            "base_layer_decision": "base_persistent_furniture",
            "render_role": "not_applicable",
            "top_down_legibility": "not_applicable"
          }
        ],
        "transient_markers_to_describe": [
          {
            "number": 10,
            "label": "dark noisy CCTV image with obscured figures",
            "category": "prop",
            "position_hint": "inside the visible display surface of number 6 only; never outside the monitor frame",
            "base_layer_decision": "state_overlay_plot_cue",
            "render_role": "not_applicable",
            "top_down_legibility": "not_applicable"
          }
        ],
        "ignored_state_overlay_markers": [],
        "target_unit_marker_numbers": [
          1,
          2,
          3
        ],
        "dominant_target_unit_marker_number": null,
        "clean_background_expected": false,
        "diagnostics": [
          "multiple base_structural_unit markers in use_numbered_elements ([1, 2, 3]); dominant_target_unit_marker_number left empty (W19B-1 lock — no lexical disambiguation)"
        ]
      },
      "L13B02": {
        "bg_id": "L13B02",
        "fp_id": "fp_police_station_office",
        "use_numbered_elements": [
          1,
          2,
          4,
          5,
          6,
          7,
          8,
          9,
          10,
          11,
          13
        ],
        "ignore_numbered_elements": [
          14,
          15,
          16
        ],
        "base_markers_to_reference": [
          {
            "number": 1,
            "label": "shared work zone",
            "category": "area",
            "position_hint": "center of the office, surrounding both workstations",
            "base_layer_decision": "base_structural_unit",
            "render_role": "not_applicable",
            "top_down_legibility": "not_applicable"
          },
          {
            "number": 2,
            "label": "entrance threshold",
            "category": "area",
            "position_hint": "southwest corner immediately inside the exit door",
            "base_layer_decision": "base_structural_unit",
            "render_role": "not_applicable",
            "top_down_legibility": "not_applicable"
          },
          {
            "number": 4,
            "label": "exit door",
            "category": "opening",
            "position_hint": "south wall near the southwest corner, swinging inward toward the threshold",
            "base_layer_decision": "base_opening",
            "render_role": "not_applicable",
            "top_down_legibility": "not_applicable"
          },
          {
            "number": 5,
            "label": "primary investigator desk",
            "category": "furniture",
            "position_hint": "west-central side of the shared work zone",
            "base_layer_decision": "base_persistent_furniture",
            "render_role": "not_applicable",
            "top_down_legibility": "not_applicable"
          },
          {
            "number": 6,
            "label": "primary desk chair",
            "category": "furniture",
            "position_hint": "east side of the primary investigator desk",
            "base_layer_decision": "base_persistent_furniture",
            "render_role": "not_applicable",
            "top_down_legibility": "not_applicable"
          },
          {
            "number": 7,
            "label": "duty investigator desk",
            "category": "furniture",
            "position_hint": "east-central side of the shared work zone, facing the primary desk",
            "base_layer_decision": "base_persistent_furniture",
            "render_role": "not_applicable",
            "top_down_legibility": "not_applicable"
          },
          {
            "number": 8,
            "label": "duty desk chair",
            "category": "furniture",
            "position_hint": "west side of the duty investigator desk",
            "base_layer_decision": "base_persistent_furniture",
            "render_role": "not_applicable",
            "top_down_legibility": "not_applicable"
          },
          {
            "number": 9,
            "label": "duty workstation monitor",
            "category": "prop",
            "position_hint": "north edge of the duty investigator desk, screen facing southwest",
            "base_layer_decision": "base_persistent_fixture",
            "render_role": "not_applicable",
            "top_down_legibility": "not_applicable"
          },
          {
            "number": 10,
            "label": "primary workstation monitor",
            "category": "prop",
            "position_hint": "north edge of the primary investigator desk, screen facing southeast",
            "base_layer_decision": "base_persistent_fixture",
            "render_role": "not_applicable",
            "top_down_legibility": "not_applicable"
          },
          {
            "number": 11,
            "label": "north window run",
            "category": "opening",
            "position_hint": "single continuous run centered on the north exterior wall",
            "base_layer_decision": "base_opening",
            "render_role": "not_applicable",
            "top_down_legibility": "not_applicable"
          }
        ],
        "transient_markers_to_describe": [
          {
            "number": 13,
            "label": "handheld smartphone",
            "category": "prop",
            "position_hint": "along the path from the entrance threshold toward the primary desk",
            "base_layer_decision": "state_overlay_transient_object",
            "render_role": "not_applicable",
            "top_down_legibility": "not_applicable"
          }
        ],
        "ignored_state_overlay_markers": [
          {
            "number": 14,
            "label": "spread investigation photographs",
            "category": "prop",
            "position_hint": "single clustered spread on top of the primary investigator desk",
            "base_layer_decision": "state_overlay_transient_object",
            "render_role": "not_applicable",
            "top_down_legibility": "not_applicable"
          },
          {
            "number": 15,
            "label": "GPS location result",
            "category": "prop",
            "position_hint": "confined to the screen of the duty workstation monitor",
            "base_layer_decision": "state_overlay_plot_cue",
            "render_role": "not_applicable",
            "top_down_legibility": "not_applicable"
          },
          {
            "number": 16,
            "label": "coordinate note and pen",
            "category": "prop",
            "position_hint": "single small cluster on the near corner of the duty investigator desk",
            "base_layer_decision": "state_overlay_transient_object",
            "render_role": "not_applicable",
            "top_down_legibility": "not_applicable"
          }
        ],
        "target_unit_marker_numbers": [
          1,
          2
        ],
        "dominant_target_unit_marker_number": null,
        "clean_background_expected": false,
        "diagnostics": [
          "multiple base_structural_unit markers in use_numbered_elements ([1, 2]); dominant_target_unit_marker_number left empty (W19B-1 lock — no lexical disambiguation)"
        ]
      },
      "L13B01": {
        "bg_id": "L13B01",
        "fp_id": "fp_police_station_office",
        "use_numbered_elements": [
          1,
          2,
          3,
          4,
          5,
          6,
          7,
          8,
          9,
          10,
          11,
          12,
          14,
          15,
          16
        ],
        "ignore_numbered_elements": [
          13
        ],
        "base_markers_to_reference": [
          {
            "number": 1,
            "label": "shared work zone",
            "category": "area",
            "position_hint": "center of the office, surrounding both workstations",
            "base_layer_decision": "base_structural_unit",
            "render_role": "not_applicable",
            "top_down_legibility": "not_applicable"
          },
          {
            "number": 2,
            "label": "entrance threshold",
            "category": "area",
            "position_hint": "southwest corner immediately inside the exit door",
            "base_layer_decision": "base_structural_unit",
            "render_role": "not_applicable",
            "top_down_legibility": "not_applicable"
          },
          {
            "number": 3,
            "label": "beverage service alcove",
            "category": "area",
            "position_hint": "southeast corner of the office",
            "base_layer_decision": "base_structural_unit",
            "render_role": "not_applicable",
            "top_down_legibility": "not_applicable"
          },
          {
            "number": 4,
            "label": "exit door",
            "category": "opening",
            "position_hint": "south wall near the southwest corner, swinging inward toward the threshold",
            "base_layer_decision": "base_opening",
            "render_role": "not_applicable",
            "top_down_legibility": "not_applicable"
          },
          {
            "number": 5,
            "label": "primary investigator desk",
            "category": "furniture",
            "position_hint": "west-central side of the shared work zone",
            "base_layer_decision": "base_persistent_furniture",
            "render_role": "not_applicable",
            "top_down_legibility": "not_applicable"
          },
          {
            "number": 6,
            "label": "primary desk chair",
            "category": "furniture",
            "position_hint": "east side of the primary investigator desk",
            "base_layer_decision": "base_persistent_furniture",
            "render_role": "not_applicable",
            "top_down_legibility": "not_applicable"
          },
          {
            "number": 7,
            "label": "duty investigator desk",
            "category": "furniture",
            "position_hint": "east-central side of the shared work zone, facing the primary desk",
            "base_layer_decision": "base_persistent_furniture",
            "render_role": "not_applicable",
            "top_down_legibility": "not_applicable"
          },
          {
            "number": 8,
            "label": "duty desk chair",
            "category": "furniture",
            "position_hint": "west side of the duty investigator desk",
            "base_layer_decision": "base_persistent_furniture",
            "render_role": "not_applicable",
            "top_down_legibility": "not_applicable"
          },
          {
            "number": 9,
            "label": "duty workstation monitor",
            "category": "prop",
            "position_hint": "north edge of the duty investigator desk, screen facing southwest",
            "base_layer_decision": "base_persistent_fixture",
            "render_role": "not_applicable",
            "top_down_legibility": "not_applicable"
          },
          {
            "number": 10,
            "label": "primary workstation monitor",
            "category": "prop",
            "position_hint": "north edge of the primary investigator desk, screen facing southeast",
            "base_layer_decision": "base_persistent_fixture",
            "render_role": "not_applicable",
            "top_down_legibility": "not_applicable"
          },
          {
            "number": 11,
            "label": "north window run",
            "category": "opening",
            "position_hint": "single continuous run centered on the north exterior wall",
            "base_layer_decision": "base_opening",
            "render_role": "not_applicable",
            "top_down_legibility": "not_applicable"
          },
          {
            "number": 12,
            "label": "coffee machine",
            "category": "prop",
            "position_hint": "against the east wall inside the beverage service alcove",
            "base_layer_decision": "base_persistent_fixture",
            "render_role": "not_applicable",
            "top_down_legibility": "not_applicable"
          }
        ],
        "transient_markers_to_describe": [
          {
            "number": 14,
            "label": "spread investigation photographs",
            "category": "prop",
            "position_hint": "single clustered spread on top of the primary investigator desk",
            "base_layer_decision": "state_overlay_transient_object",
            "render_role": "not_applicable",
            "top_down_legibility": "not_applicable"
          },
          {
            "number": 15,
            "label": "GPS location result",
            "category": "prop",
            "position_hint": "confined to the screen of the duty workstation monitor",
            "base_layer_decision": "state_overlay_plot_cue",
            "render_role": "not_applicable",
            "top_down_legibility": "not_applicable"
          },
          {
            "number": 16,
            "label": "coordinate note and pen",
            "category": "prop",
            "position_hint": "single small cluster on the near corner of the duty investigator desk",
            "base_layer_decision": "state_overlay_transient_object",
            "render_role": "not_applicable",
            "top_down_legibility": "not_applicable"
          }
        ],
        "ignored_state_overlay_markers": [
          {
            "number": 13,
            "label": "handheld smartphone",
            "category": "prop",
            "position_hint": "along the path from the entrance threshold toward the primary desk",
            "base_layer_decision": "state_overlay_transient_object",
            "render_role": "not_applicable",
            "top_down_legibility": "not_applicable"
          }
        ],
        "target_unit_marker_numbers": [
          1,
          2,
          3
        ],
        "dominant_target_unit_marker_number": null,
        "clean_background_expected": false,
        "diagnostics": [
          "multiple base_structural_unit markers in use_numbered_elements ([1, 2, 3]); dominant_target_unit_marker_number left empty (W19B-1 lock — no lexical disambiguation)"
        ]
      },
      "L19B01": {
        "bg_id": "L19B01",
        "fp_id": "fp_l19_boat_deck",
        "use_numbered_elements": [
          1,
          2,
          3,
          5,
          6,
          9,
          10,
          11,
          12,
          13,
          14,
          15
        ],
        "ignore_numbered_elements": [],
        "base_markers_to_reference": [
          {
            "number": 1,
            "label": "open work deck",
            "category": "area",
            "position_hint": "forward two-thirds of the vessel, centered between the side railings",
            "base_layer_decision": "base_structural_unit",
            "render_role": "not_applicable",
            "top_down_legibility": "not_applicable"
          },
          {
            "number": 2,
            "label": "wheelhouse control zone",
            "category": "area",
            "position_hint": "compact enclosed cabin centered in the aft third",
            "base_layer_decision": "base_structural_unit",
            "render_role": "not_applicable",
            "top_down_legibility": "not_applicable"
          },
          {
            "number": 3,
            "label": "wheelhouse threshold zone",
            "category": "area",
            "position_hint": "small contiguous landing immediately forward of the wheelhouse access door",
            "base_layer_decision": "base_structural_unit",
            "render_role": "not_applicable",
            "top_down_legibility": "not_applicable"
          },
          {
            "number": 5,
            "label": "wheelhouse access door",
            "category": "opening",
            "position_hint": "starboard end of the forward wheelhouse bulkhead, opening inward",
            "base_layer_decision": "base_opening",
            "render_role": "not_applicable",
            "top_down_legibility": "not_applicable"
          },
          {
            "number": 6,
            "label": "forward windshield run",
            "category": "opening",
            "position_hint": "single broad contiguous window run across the center and port portion of the forward wheelhouse wall",
            "base_layer_decision": "base_opening",
            "render_role": "not_applicable",
            "top_down_legibility": "not_applicable"
          },
          {
            "number": 9,
            "label": "port deck railing",
            "category": "prop",
            "position_hint": "single continuous rail run along the port edge of the open deck",
            "base_layer_decision": "base_persistent_fixture",
            "render_role": "not_applicable",
            "top_down_legibility": "not_applicable"
          },
          {
            "number": 10,
            "label": "starboard deck railing",
            "category": "prop",
            "position_hint": "single continuous rail run along the starboard edge of the open deck",
            "base_layer_decision": "base_persistent_fixture",
            "render_role": "not_applicable",
            "top_down_legibility": "not_applicable"
          },
          {
            "number": 11,
            "label": "bow railing",
            "category": "prop",
            "position_hint": "single curved rail run around the forward bow edge",
            "base_layer_decision": "base_persistent_fixture",
            "render_role": "not_applicable",
            "top_down_legibility": "not_applicable"
          },
          {
            "number": 12,
            "label": "helm console",
            "category": "prop",
            "position_hint": "inside the wheelhouse against the forward bulkhead, slightly starboard of center",
            "base_layer_decision": "base_persistent_fixture",
            "render_role": "not_applicable",
            "top_down_legibility": "not_applicable"
          },
          {
            "number": 13,
            "label": "fixed deck bench",
            "category": "furniture",
            "position_hint": "against the port side near the aft end of the open deck",
            "base_layer_decision": "base_persistent_furniture",
            "render_role": "not_applicable",
            "top_down_legibility": "not_applicable"
          },
          {
            "number": 14,
            "label": "flush deck hatch",
            "category": "prop",
            "position_hint": "center of the forward work deck, leaving circulation space around it",
            "base_layer_decision": "base_persistent_fixture",
            "render_role": "not_applicable",
            "top_down_legibility": "not_applicable"
          },
          {
            "number": 15,
            "label": "bow mooring winch",
            "category": "prop",
            "position_hint": "on the deck centerline just aft of the bow railing",
            "base_layer_decision": "base_persistent_fixture",
            "render_role": "not_applicable",
            "top_down_legibility": "not_applicable"
          }
        ],
        "transient_markers_to_describe": [],
        "ignored_state_overlay_markers": [],
        "target_unit_marker_numbers": [
          1,
          2,
          3
        ],
        "dominant_target_unit_marker_number": null,
        "clean_background_expected": true,
        "diagnostics": [
          "multiple base_structural_unit markers in use_numbered_elements ([1, 2, 3]); dominant_target_unit_marker_number left empty (W19B-1 lock — no lexical disambiguation)"
        ]
      },
      "L20B01": {
        "bg_id": "L20B01",
        "fp_id": "fp_l20_wheelhouse",
        "use_numbered_elements": [
          1,
          2,
          3,
          4,
          5,
          6,
          7,
          8,
          9,
          10,
          11
        ],
        "ignore_numbered_elements": [],
        "base_markers_to_reference": [
          {
            "number": 1,
            "label": "shared standing area",
            "category": "area",
            "position_hint": "center of the compact wheelhouse between the aft entry and forward helm",
            "base_layer_decision": "base_structural_unit",
            "render_role": "not_applicable",
            "top_down_legibility": "not_applicable"
          },
          {
            "number": 2,
            "label": "helm service zone",
            "category": "area",
            "position_hint": "forward end of the wheelhouse surrounding the helm console",
            "base_layer_decision": "base_structural_unit",
            "render_role": "not_applicable",
            "top_down_legibility": "not_applicable"
          },
          {
            "number": 3,
            "label": "entry threshold zone",
            "category": "area",
            "position_hint": "narrow aft-center strip immediately inside the entry door",
            "base_layer_decision": "base_structural_unit",
            "render_role": "not_applicable",
            "top_down_legibility": "not_applicable"
          },
          {
            "number": 4,
            "label": "aft entry door",
            "category": "opening",
            "position_hint": "aft wall, centered slightly toward the port side, swinging inward",
            "base_layer_decision": "base_opening",
            "render_role": "not_applicable",
            "top_down_legibility": "not_applicable"
          },
          {
            "number": 5,
            "label": "forward windshield run",
            "category": "opening",
            "position_hint": "single broad contiguous opening across the forward wall above the helm",
            "base_layer_decision": "base_opening",
            "render_role": "not_applicable",
            "top_down_legibility": "not_applicable"
          },
          {
            "number": 6,
            "label": "port side window run",
            "category": "opening",
            "position_hint": "forward half of the port wall, one contiguous window run",
            "base_layer_decision": "base_opening",
            "render_role": "not_applicable",
            "top_down_legibility": "not_applicable"
          },
          {
            "number": 7,
            "label": "starboard side window run",
            "category": "opening",
            "position_hint": "forward half of the starboard wall, one contiguous window run",
            "base_layer_decision": "base_opening",
            "render_role": "not_applicable",
            "top_down_legibility": "not_applicable"
          },
          {
            "number": 8,
            "label": "helm console assembly",
            "category": "prop",
            "position_hint": "against the forward wall below the windshield, slightly starboard of center",
            "base_layer_decision": "base_persistent_fixture",
            "render_role": "not_applicable",
            "top_down_legibility": "not_applicable"
          }
        ],
        "transient_markers_to_describe": [
          {
            "number": 9,
            "label": "aft wall red-circle cluster",
            "category": "prop",
            "position_hint": "one contiguous exposed section of the aft wall beside the entry door",
            "base_layer_decision": "state_overlay_plot_cue",
            "render_role": "not_applicable",
            "top_down_legibility": "not_applicable"
          },
          {
            "number": 10,
            "label": "port wall red-circle cluster",
            "category": "prop",
            "position_hint": "one contiguous exposed section of the port wall behind the side window run",
            "base_layer_decision": "state_overlay_plot_cue",
            "render_role": "not_applicable",
            "top_down_legibility": "not_applicable"
          },
          {
            "number": 11,
            "label": "starboard wall red-circle cluster",
            "category": "prop",
            "position_hint": "one contiguous exposed section of the starboard wall behind the side window run",
            "base_layer_decision": "state_overlay_plot_cue",
            "render_role": "not_applicable",
            "top_down_legibility": "not_applicable"
          }
        ],
        "ignored_state_overlay_markers": [],
        "target_unit_marker_numbers": [
          1,
          2,
          3
        ],
        "dominant_target_unit_marker_number": null,
        "clean_background_expected": false,
        "diagnostics": [
          "multiple base_structural_unit markers in use_numbered_elements ([1, 2, 3]); dominant_target_unit_marker_number left empty (W19B-1 lock — no lexical disambiguation)"
        ]
      }
    }
  },
  "step_id": "floor_plan_overlay_payload",
  "run_id": "a06c160d-7d97-4aac-a5a0-9bd3ad60002a",
  "resolved_model": "gpt",
  "updated_at": "2026-07-22T02:31:04.426880+00:00",
  "project_config_snapshot": {}
}