{
  "status": "completed",
  "applicable_count": 1,
  "completed_count": 1,
  "failed_count": 0,
  "schema_version": 1,
  "config_hash": "c55c2f78e54bc607",
  "data": {
    "overlays": {
      "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
        ],
        "ignore_numbered_elements": [
          13,
          14
        ],
        "base_markers_to_reference": [
          {
            "number": 1,
            "label": "shared rooftop deck",
            "category": "area",
            "position_hint": "large central and western open roof area inside the parapet",
            "base_layer_decision": "base_structural_unit",
            "render_role": "not_applicable",
            "top_down_legibility": "not_applicable"
          },
          {
            "number": 2,
            "label": "rooftop room footprint",
            "category": "area",
            "position_hint": "compact rectangular unit along the east side of the roof",
            "base_layer_decision": "base_structural_unit",
            "render_role": "not_applicable",
            "top_down_legibility": "not_applicable"
          },
          {
            "number": 3,
            "label": "stair access landing",
            "category": "area",
            "position_hint": "southwest threshold area where stairs arrive onto the rooftop",
            "base_layer_decision": "base_structural_unit",
            "render_role": "not_applicable",
            "top_down_legibility": "not_applicable"
          },
          {
            "number": 4,
            "label": "utility corner zone",
            "category": "area",
            "position_hint": "northwest roof corner around the water tank",
            "base_layer_decision": "base_structural_unit",
            "render_role": "not_applicable",
            "top_down_legibility": "not_applicable"
          },
          {
            "number": 5,
            "label": "parapet perimeter wall",
            "category": "area",
            "position_hint": "continuous low wall around the outer edge of the roof slab",
            "base_layer_decision": "base_structural_unit",
            "render_role": "not_applicable",
            "top_down_legibility": "not_applicable"
          },
          {
            "number": 6,
            "label": "iron entrance door",
            "category": "opening",
            "position_hint": "west-facing wall of the rooftop room, opening onto the deck",
            "base_layer_decision": "base_opening",
            "render_role": "not_applicable",
            "top_down_legibility": "not_applicable"
          },
          {
            "number": 7,
            "label": "exterior sliding window",
            "category": "opening",
            "position_hint": "west-facing wall of the rooftop room, north of the entrance door",
            "base_layer_decision": "base_opening",
            "render_role": "not_applicable",
            "top_down_legibility": "not_applicable"
          },
          {
            "number": 8,
            "label": "rooftop water tank",
            "category": "prop",
            "position_hint": "inside the northwest utility corner",
            "base_layer_decision": "base_persistent_fixture",
            "render_role": "not_applicable",
            "top_down_legibility": "not_applicable"
          },
          {
            "number": 9,
            "label": "clothesline with posts",
            "category": "prop",
            "position_hint": "spanning across the open deck from the northwest utility corner toward the south-central parapet",
            "base_layer_decision": "base_persistent_fixture",
            "render_role": "not_applicable",
            "top_down_legibility": "not_applicable"
          },
          {
            "number": 10,
            "label": "low drying platform",
            "category": "furniture",
            "position_hint": "center-left portion of the open rooftop deck beneath the clothesline",
            "base_layer_decision": "base_persistent_furniture",
            "render_role": "not_applicable",
            "top_down_legibility": "not_applicable"
          }
        ],
        "transient_markers_to_describe": [
          {
            "number": 11,
            "label": "door-gap flyer intrusion cue",
            "category": "prop",
            "position_hint": "at number 6, caught in the iron entrance door gap",
            "base_layer_decision": "state_overlay_transient_object",
            "render_role": "not_applicable",
            "top_down_legibility": "not_applicable"
          },
          {
            "number": 12,
            "label": "attack silhouette reflected in window",
            "category": "prop",
            "position_hint": "on the surface of number 7, as a reflected interior silhouette",
            "base_layer_decision": "state_overlay_plot_cue",
            "render_role": "not_applicable",
            "top_down_legibility": "not_applicable"
          }
        ],
        "ignored_state_overlay_markers": [
          {
            "number": 13,
            "label": "black cat on parapet",
            "category": "prop",
            "position_hint": "on number 5, along the parapet edge facing the rooftop room",
            "base_layer_decision": "state_overlay_transient_object",
            "render_role": "not_applicable",
            "top_down_legibility": "not_applicable"
          },
          {
            "number": 14,
            "label": "lit rooftop room window cue",
            "category": "prop",
            "position_hint": "at number 7 and adjacent wall area of number 2",
            "base_layer_decision": "state_overlay_plot_cue",
            "render_role": "not_applicable",
            "top_down_legibility": "not_applicable"
          }
        ],
        "target_unit_marker_numbers": [
          1,
          2,
          3,
          4,
          5
        ],
        "dominant_target_unit_marker_number": null,
        "clean_background_expected": false,
        "diagnostics": [
          "multiple base_structural_unit markers in use_numbered_elements ([1, 2, 3, 4, 5]); dominant_target_unit_marker_number left empty (W19B-1 lock — no lexical disambiguation)"
        ]
      },
      "L04B01": {
        "bg_id": "L04B01",
        "fp_id": "fp_l04_rooftop_exterior",
        "use_numbered_elements": [
          1,
          2,
          3,
          4,
          5,
          6,
          7,
          8,
          9,
          10,
          13,
          14
        ],
        "ignore_numbered_elements": [
          11,
          12
        ],
        "base_markers_to_reference": [
          {
            "number": 1,
            "label": "shared rooftop deck",
            "category": "area",
            "position_hint": "large central and western open roof area inside the parapet",
            "base_layer_decision": "base_structural_unit",
            "render_role": "not_applicable",
            "top_down_legibility": "not_applicable"
          },
          {
            "number": 2,
            "label": "rooftop room footprint",
            "category": "area",
            "position_hint": "compact rectangular unit along the east side of the roof",
            "base_layer_decision": "base_structural_unit",
            "render_role": "not_applicable",
            "top_down_legibility": "not_applicable"
          },
          {
            "number": 3,
            "label": "stair access landing",
            "category": "area",
            "position_hint": "southwest threshold area where stairs arrive onto the rooftop",
            "base_layer_decision": "base_structural_unit",
            "render_role": "not_applicable",
            "top_down_legibility": "not_applicable"
          },
          {
            "number": 4,
            "label": "utility corner zone",
            "category": "area",
            "position_hint": "northwest roof corner around the water tank",
            "base_layer_decision": "base_structural_unit",
            "render_role": "not_applicable",
            "top_down_legibility": "not_applicable"
          },
          {
            "number": 5,
            "label": "parapet perimeter wall",
            "category": "area",
            "position_hint": "continuous low wall around the outer edge of the roof slab",
            "base_layer_decision": "base_structural_unit",
            "render_role": "not_applicable",
            "top_down_legibility": "not_applicable"
          },
          {
            "number": 6,
            "label": "iron entrance door",
            "category": "opening",
            "position_hint": "west-facing wall of the rooftop room, opening onto the deck",
            "base_layer_decision": "base_opening",
            "render_role": "not_applicable",
            "top_down_legibility": "not_applicable"
          },
          {
            "number": 7,
            "label": "exterior sliding window",
            "category": "opening",
            "position_hint": "west-facing wall of the rooftop room, north of the entrance door",
            "base_layer_decision": "base_opening",
            "render_role": "not_applicable",
            "top_down_legibility": "not_applicable"
          },
          {
            "number": 8,
            "label": "rooftop water tank",
            "category": "prop",
            "position_hint": "inside the northwest utility corner",
            "base_layer_decision": "base_persistent_fixture",
            "render_role": "not_applicable",
            "top_down_legibility": "not_applicable"
          },
          {
            "number": 9,
            "label": "clothesline with posts",
            "category": "prop",
            "position_hint": "spanning across the open deck from the northwest utility corner toward the south-central parapet",
            "base_layer_decision": "base_persistent_fixture",
            "render_role": "not_applicable",
            "top_down_legibility": "not_applicable"
          },
          {
            "number": 10,
            "label": "low drying platform",
            "category": "furniture",
            "position_hint": "center-left portion of the open rooftop deck beneath the clothesline",
            "base_layer_decision": "base_persistent_furniture",
            "render_role": "not_applicable",
            "top_down_legibility": "not_applicable"
          }
        ],
        "transient_markers_to_describe": [
          {
            "number": 13,
            "label": "black cat on parapet",
            "category": "prop",
            "position_hint": "on number 5, along the parapet edge facing the rooftop room",
            "base_layer_decision": "state_overlay_transient_object",
            "render_role": "not_applicable",
            "top_down_legibility": "not_applicable"
          },
          {
            "number": 14,
            "label": "lit rooftop room window cue",
            "category": "prop",
            "position_hint": "at number 7 and adjacent wall area of number 2",
            "base_layer_decision": "state_overlay_plot_cue",
            "render_role": "not_applicable",
            "top_down_legibility": "not_applicable"
          }
        ],
        "ignored_state_overlay_markers": [
          {
            "number": 11,
            "label": "door-gap flyer intrusion cue",
            "category": "prop",
            "position_hint": "at number 6, caught in the iron entrance door gap",
            "base_layer_decision": "state_overlay_transient_object",
            "render_role": "not_applicable",
            "top_down_legibility": "not_applicable"
          },
          {
            "number": 12,
            "label": "attack silhouette reflected in window",
            "category": "prop",
            "position_hint": "on the surface of number 7, as a reflected interior silhouette",
            "base_layer_decision": "state_overlay_plot_cue",
            "render_role": "not_applicable",
            "top_down_legibility": "not_applicable"
          }
        ],
        "target_unit_marker_numbers": [
          1,
          2,
          3,
          4,
          5
        ],
        "dominant_target_unit_marker_number": null,
        "clean_background_expected": false,
        "diagnostics": [
          "multiple base_structural_unit markers in use_numbered_elements ([1, 2, 3, 4, 5]); dominant_target_unit_marker_number left empty (W19B-1 lock — no lexical disambiguation)"
        ]
      },
      "L05B03": {
        "bg_id": "L05B03",
        "fp_id": "fp_l05_main_interior",
        "use_numbered_elements": [
          1,
          2,
          3,
          7,
          8,
          9,
          10,
          11,
          12,
          13,
          14,
          24,
          25,
          26
        ],
        "ignore_numbered_elements": [
          27,
          28,
          29,
          30,
          31,
          32,
          33,
          34,
          35,
          36,
          37,
          38,
          39
        ],
        "base_markers_to_reference": [
          {
            "number": 1,
            "label": "entry threshold zone",
            "category": "area",
            "position_hint": "south side of unit, immediately inside the entrance door",
            "base_layer_decision": "base_structural_unit",
            "render_role": "not_applicable",
            "top_down_legibility": "not_applicable"
          },
          {
            "number": 2,
            "label": "shared living and dining zone",
            "category": "area",
            "position_hint": "central main room connecting entry, kitchenette, bedrooms, and bathroom",
            "base_layer_decision": "base_structural_unit",
            "render_role": "not_applicable",
            "top_down_legibility": "not_applicable"
          },
          {
            "number": 3,
            "label": "open kitchenette service strip",
            "category": "area",
            "position_hint": "west wall of the shared zone, open to living and dining",
            "base_layer_decision": "base_structural_unit",
            "render_role": "not_applicable",
            "top_down_legibility": "not_applicable"
          },
          {
            "number": 7,
            "label": "metal entrance door",
            "category": "opening",
            "position_hint": "south exterior wall opening into the entry threshold",
            "base_layer_decision": "base_opening",
            "render_role": "not_applicable",
            "top_down_legibility": "not_applicable"
          },
          {
            "number": 8,
            "label": "small living room window",
            "category": "opening",
            "position_hint": "east wall of the shared living and dining zone",
            "base_layer_decision": "base_opening",
            "render_role": "not_applicable",
            "top_down_legibility": "not_applicable"
          },
          {
            "number": 9,
            "label": "kitchen counter with sink and faucet",
            "category": "furniture",
            "position_hint": "west wall of the kitchenette service strip",
            "base_layer_decision": "base_persistent_fixture",
            "render_role": "not_applicable",
            "top_down_legibility": "not_applicable"
          },
          {
            "number": 10,
            "label": "stovetop on kitchen counter",
            "category": "furniture",
            "position_hint": "west wall kitchenette counter, near the sink",
            "base_layer_decision": "base_persistent_fixture",
            "render_role": "not_applicable",
            "top_down_legibility": "not_applicable"
          },
          {
            "number": 11,
            "label": "dining table",
            "category": "furniture",
            "position_hint": "center of shared living and dining zone",
            "base_layer_decision": "base_persistent_furniture",
            "render_role": "not_applicable",
            "top_down_legibility": "not_applicable"
          },
          {
            "number": 12,
            "label": "dining chairs",
            "category": "furniture",
            "position_hint": "around the dining table in the shared zone",
            "base_layer_decision": "base_persistent_furniture",
            "render_role": "not_applicable",
            "top_down_legibility": "not_applicable"
          },
          {
            "number": 13,
            "label": "television on low stand",
            "category": "furniture",
            "position_hint": "north side of shared zone, visible from dining table",
            "base_layer_decision": "base_persistent_furniture",
            "render_role": "not_applicable",
            "top_down_legibility": "not_applicable"
          },
          {
            "number": 14,
            "label": "living floor lamp",
            "category": "furniture",
            "position_hint": "corner of shared zone near the television stand",
            "base_layer_decision": "base_persistent_furniture",
            "render_role": "not_applicable",
            "top_down_legibility": "not_applicable"
          },
          {
            "number": 24,
            "label": "framed family photo on shelf or table",
            "category": "prop",
            "position_hint": "shared living and dining zone near the dining table or side shelf",
            "base_layer_decision": "base_persistent_furniture",
            "render_role": "not_applicable",
            "top_down_legibility": "not_applicable"
          }
        ],
        "transient_markers_to_describe": [
          {
            "number": 25,
            "label": "steaming pot and rinsed herbal bundle",
            "category": "prop",
            "position_hint": "on or beside number 9 and number 10 in the kitchenette",
            "base_layer_decision": "state_overlay_transient_object",
            "render_role": "not_applicable",
            "top_down_legibility": "not_applicable"
          },
          {
            "number": 26,
            "label": "small circular wrist mark on seated adult",
            "category": "prop",
            "position_hint": "near number 11 in the shared dining area",
            "base_layer_decision": "state_overlay_plot_cue",
            "render_role": "not_applicable",
            "top_down_legibility": "not_applicable"
          }
        ],
        "ignored_state_overlay_markers": [
          {
            "number": 27,
            "label": "two teacups, one overturned",
            "category": "prop",
            "position_hint": "on number 11 in the shared dining area",
            "base_layer_decision": "state_overlay_transient_object",
            "render_role": "not_applicable",
            "top_down_legibility": "not_applicable"
          },
          {
            "number": 28,
            "label": "bloodstains and bloody footprints to curtain",
            "category": "prop",
            "position_hint": "floor of number 5, leading from center of room toward number 19",
            "base_layer_decision": "state_overlay_plot_cue",
            "render_role": "not_applicable",
            "top_down_legibility": "not_applicable"
          },
          {
            "number": 29,
            "label": "seated corpse hidden behind curtain",
            "category": "prop",
            "position_hint": "behind number 19 in daughter bedroom",
            "base_layer_decision": "state_overlay_transient_object",
            "render_role": "not_applicable",
            "top_down_legibility": "not_applicable"
          },
          {
            "number": 30,
            "label": "crumpled old photo near corpse hand",
            "category": "prop",
            "position_hint": "near number 29 behind the curtain in daughter bedroom",
            "base_layer_decision": "state_overlay_transient_object",
            "render_role": "not_applicable",
            "top_down_legibility": "not_applicable"
          },
          {
            "number": 31,
            "label": "red circle on wall above daughter bed",
            "category": "prop",
            "position_hint": "wall above or near number 18 in daughter bedroom",
            "base_layer_decision": "state_overlay_plot_cue",
            "render_role": "not_applicable",
            "top_down_legibility": "not_applicable"
          },
          {
            "number": 32,
            "label": "overly clean restored surfaces",
            "category": "area",
            "position_hint": "daughter bedroom and dining table surfaces after violent traces vanish",
            "base_layer_decision": "state_overlay_plot_cue",
            "render_role": "not_applicable",
            "top_down_legibility": "not_applicable"
          },
          {
            "number": 33,
            "label": "red circle vision in bathroom mirror or wall",
            "category": "prop",
            "position_hint": "at number 22 in the bathroom",
            "base_layer_decision": "state_overlay_plot_cue",
            "render_role": "not_applicable",
            "top_down_legibility": "not_applicable"
          },
          {
            "number": 34,
            "label": "distorted face vision in framed photo",
            "category": "prop",
            "position_hint": "on number 24 in the shared living and dining zone",
            "base_layer_decision": "state_overlay_plot_cue",
            "render_role": "not_applicable",
            "top_down_legibility": "not_applicable"
          },
          {
            "number": 35,
            "label": "ransacked footprints across shared room",
            "category": "prop",
            "position_hint": "from number 7 across number 2 toward number 8 and number 17",
            "base_layer_decision": "state_overlay_plot_cue",
            "render_role": "not_applicable",
            "top_down_legibility": "not_applicable"
          },
          {
            "number": 36,
            "label": "living window left open",
            "category": "opening",
            "position_hint": "at number 8 on the east wall of the shared zone",
            "base_layer_decision": "state_overlay_plot_cue",
            "render_role": "not_applicable",
            "top_down_legibility": "not_applicable"
          },
          {
            "number": 37,
            "label": "overturned dining chairs",
            "category": "furniture",
            "position_hint": "around number 11 in the shared dining area",
            "base_layer_decision": "state_overlay_transient_object",
            "render_role": "not_applicable",
            "top_down_legibility": "not_applicable"
          },
          {
            "number": 38,
            "label": "displaced backpack and doll",
            "category": "prop",
            "position_hint": "on floor or bed area of number 5, slightly shifted from earlier position",
            "base_layer_decision": "state_overlay_transient_object",
            "render_role": "not_applicable",
            "top_down_legibility": "not_applicable"
          },
          {
            "number": 39,
            "label": "red circle with bloody photo pinned at center",
            "category": "prop",
            "position_hint": "wall of number 5 above or near number 18",
            "base_layer_decision": "state_overlay_plot_cue",
            "render_role": "not_applicable",
            "top_down_legibility": "not_applicable"
          }
        ],
        "target_unit_marker_numbers": [
          1,
          2,
          3
        ],
        "dominant_target_unit_marker_number": null,
        "clean_background_expected": false,
        "diagnostics": [
          "multiple base_structural_unit markers in use_numbered_elements ([1, 2, 3]); dominant_target_unit_marker_number left empty (W19B-1 lock — no lexical disambiguation)"
        ]
      },
      "L05B06": {
        "bg_id": "L05B06",
        "fp_id": "fp_l05_main_interior",
        "use_numbered_elements": [
          2,
          5,
          11,
          15,
          17,
          18,
          19,
          20,
          27,
          28,
          29,
          30,
          31
        ],
        "ignore_numbered_elements": [
          25,
          26,
          32,
          33,
          34,
          35,
          36,
          37,
          38,
          39
        ],
        "base_markers_to_reference": [
          {
            "number": 2,
            "label": "shared living and dining zone",
            "category": "area",
            "position_hint": "central main room connecting entry, kitchenette, bedrooms, and bathroom",
            "base_layer_decision": "base_structural_unit",
            "render_role": "not_applicable",
            "top_down_legibility": "not_applicable"
          },
          {
            "number": 5,
            "label": "daughter bedroom",
            "category": "area",
            "position_hint": "northeast private room off the shared zone",
            "base_layer_decision": "base_structural_unit",
            "render_role": "not_applicable",
            "top_down_legibility": "not_applicable"
          },
          {
            "number": 11,
            "label": "dining table",
            "category": "furniture",
            "position_hint": "center of shared living and dining zone",
            "base_layer_decision": "base_persistent_furniture",
            "render_role": "not_applicable",
            "top_down_legibility": "not_applicable"
          },
          {
            "number": 15,
            "label": "mother bedroom door",
            "category": "opening",
            "position_hint": "northwest side of shared zone leading into mother bedroom",
            "base_layer_decision": "base_opening",
            "render_role": "not_applicable",
            "top_down_legibility": "not_applicable"
          },
          {
            "number": 17,
            "label": "daughter bedroom door",
            "category": "opening",
            "position_hint": "northeast side of shared zone leading into daughter bedroom",
            "base_layer_decision": "base_opening",
            "render_role": "not_applicable",
            "top_down_legibility": "not_applicable"
          },
          {
            "number": 18,
            "label": "daughter bed",
            "category": "furniture",
            "position_hint": "against inner wall of daughter bedroom, below the marked wall position used in overlays",
            "base_layer_decision": "base_persistent_furniture",
            "render_role": "not_applicable",
            "top_down_legibility": "not_applicable"
          },
          {
            "number": 19,
            "label": "daughter window with curtain",
            "category": "opening",
            "position_hint": "outer wall of daughter bedroom, curtain directly in front of the window",
            "base_layer_decision": "base_opening",
            "render_role": "not_applicable",
            "top_down_legibility": "not_applicable"
          },
          {
            "number": 20,
            "label": "daughter wardrobe or closet",
            "category": "furniture",
            "position_hint": "side wall of daughter bedroom opposite the bed",
            "base_layer_decision": "base_persistent_furniture",
            "render_role": "not_applicable",
            "top_down_legibility": "not_applicable"
          }
        ],
        "transient_markers_to_describe": [
          {
            "number": 27,
            "label": "two teacups, one overturned",
            "category": "prop",
            "position_hint": "on number 11 in the shared dining area",
            "base_layer_decision": "state_overlay_transient_object",
            "render_role": "not_applicable",
            "top_down_legibility": "not_applicable"
          },
          {
            "number": 28,
            "label": "bloodstains and bloody footprints to curtain",
            "category": "prop",
            "position_hint": "floor of number 5, leading from center of room toward number 19",
            "base_layer_decision": "state_overlay_plot_cue",
            "render_role": "not_applicable",
            "top_down_legibility": "not_applicable"
          },
          {
            "number": 29,
            "label": "seated corpse hidden behind curtain",
            "category": "prop",
            "position_hint": "behind number 19 in daughter bedroom",
            "base_layer_decision": "state_overlay_transient_object",
            "render_role": "not_applicable",
            "top_down_legibility": "not_applicable"
          },
          {
            "number": 30,
            "label": "crumpled old photo near corpse hand",
            "category": "prop",
            "position_hint": "near number 29 behind the curtain in daughter bedroom",
            "base_layer_decision": "state_overlay_transient_object",
            "render_role": "not_applicable",
            "top_down_legibility": "not_applicable"
          },
          {
            "number": 31,
            "label": "red circle on wall above daughter bed",
            "category": "prop",
            "position_hint": "wall above or near number 18 in daughter bedroom",
            "base_layer_decision": "state_overlay_plot_cue",
            "render_role": "not_applicable",
            "top_down_legibility": "not_applicable"
          }
        ],
        "ignored_state_overlay_markers": [
          {
            "number": 25,
            "label": "steaming pot and rinsed herbal bundle",
            "category": "prop",
            "position_hint": "on or beside number 9 and number 10 in the kitchenette",
            "base_layer_decision": "state_overlay_transient_object",
            "render_role": "not_applicable",
            "top_down_legibility": "not_applicable"
          },
          {
            "number": 26,
            "label": "small circular wrist mark on seated adult",
            "category": "prop",
            "position_hint": "near number 11 in the shared dining area",
            "base_layer_decision": "state_overlay_plot_cue",
            "render_role": "not_applicable",
            "top_down_legibility": "not_applicable"
          },
          {
            "number": 32,
            "label": "overly clean restored surfaces",
            "category": "area",
            "position_hint": "daughter bedroom and dining table surfaces after violent traces vanish",
            "base_layer_decision": "state_overlay_plot_cue",
            "render_role": "not_applicable",
            "top_down_legibility": "not_applicable"
          },
          {
            "number": 33,
            "label": "red circle vision in bathroom mirror or wall",
            "category": "prop",
            "position_hint": "at number 22 in the bathroom",
            "base_layer_decision": "state_overlay_plot_cue",
            "render_role": "not_applicable",
            "top_down_legibility": "not_applicable"
          },
          {
            "number": 34,
            "label": "distorted face vision in framed photo",
            "category": "prop",
            "position_hint": "on number 24 in the shared living and dining zone",
            "base_layer_decision": "state_overlay_plot_cue",
            "render_role": "not_applicable",
            "top_down_legibility": "not_applicable"
          },
          {
            "number": 35,
            "label": "ransacked footprints across shared room",
            "category": "prop",
            "position_hint": "from number 7 across number 2 toward number 8 and number 17",
            "base_layer_decision": "state_overlay_plot_cue",
            "render_role": "not_applicable",
            "top_down_legibility": "not_applicable"
          },
          {
            "number": 36,
            "label": "living window left open",
            "category": "opening",
            "position_hint": "at number 8 on the east wall of the shared zone",
            "base_layer_decision": "state_overlay_plot_cue",
            "render_role": "not_applicable",
            "top_down_legibility": "not_applicable"
          },
          {
            "number": 37,
            "label": "overturned dining chairs",
            "category": "furniture",
            "position_hint": "around number 11 in the shared dining area",
            "base_layer_decision": "state_overlay_transient_object",
            "render_role": "not_applicable",
            "top_down_legibility": "not_applicable"
          },
          {
            "number": 38,
            "label": "displaced backpack and doll",
            "category": "prop",
            "position_hint": "on floor or bed area of number 5, slightly shifted from earlier position",
            "base_layer_decision": "state_overlay_transient_object",
            "render_role": "not_applicable",
            "top_down_legibility": "not_applicable"
          },
          {
            "number": 39,
            "label": "red circle with bloody photo pinned at center",
            "category": "prop",
            "position_hint": "wall of number 5 above or near number 18",
            "base_layer_decision": "state_overlay_plot_cue",
            "render_role": "not_applicable",
            "top_down_legibility": "not_applicable"
          }
        ],
        "target_unit_marker_numbers": [
          2,
          5
        ],
        "dominant_target_unit_marker_number": null,
        "clean_background_expected": false,
        "diagnostics": [
          "multiple base_structural_unit markers in use_numbered_elements ([2, 5]); dominant_target_unit_marker_number left empty (W19B-1 lock — no lexical disambiguation)"
        ]
      },
      "L05B07": {
        "bg_id": "L05B07",
        "fp_id": "fp_l05_main_interior",
        "use_numbered_elements": [
          5,
          17,
          18,
          19,
          20,
          32,
          38
        ],
        "ignore_numbered_elements": [
          25,
          26,
          27,
          28,
          29,
          30,
          31,
          33,
          34,
          35,
          36,
          37,
          39
        ],
        "base_markers_to_reference": [
          {
            "number": 5,
            "label": "daughter bedroom",
            "category": "area",
            "position_hint": "northeast private room off the shared zone",
            "base_layer_decision": "base_structural_unit",
            "render_role": "not_applicable",
            "top_down_legibility": "not_applicable"
          },
          {
            "number": 17,
            "label": "daughter bedroom door",
            "category": "opening",
            "position_hint": "northeast side of shared zone leading into daughter bedroom",
            "base_layer_decision": "base_opening",
            "render_role": "not_applicable",
            "top_down_legibility": "not_applicable"
          },
          {
            "number": 18,
            "label": "daughter bed",
            "category": "furniture",
            "position_hint": "against inner wall of daughter bedroom, below the marked wall position used in overlays",
            "base_layer_decision": "base_persistent_furniture",
            "render_role": "not_applicable",
            "top_down_legibility": "not_applicable"
          },
          {
            "number": 19,
            "label": "daughter window with curtain",
            "category": "opening",
            "position_hint": "outer wall of daughter bedroom, curtain directly in front of the window",
            "base_layer_decision": "base_opening",
            "render_role": "not_applicable",
            "top_down_legibility": "not_applicable"
          },
          {
            "number": 20,
            "label": "daughter wardrobe or closet",
            "category": "furniture",
            "position_hint": "side wall of daughter bedroom opposite the bed",
            "base_layer_decision": "base_persistent_furniture",
            "render_role": "not_applicable",
            "top_down_legibility": "not_applicable"
          }
        ],
        "transient_markers_to_describe": [
          {
            "number": 32,
            "label": "overly clean restored surfaces",
            "category": "area",
            "position_hint": "daughter bedroom and dining table surfaces after violent traces vanish",
            "base_layer_decision": "state_overlay_plot_cue",
            "render_role": "not_applicable",
            "top_down_legibility": "not_applicable"
          },
          {
            "number": 38,
            "label": "displaced backpack and doll",
            "category": "prop",
            "position_hint": "on floor or bed area of number 5, slightly shifted from earlier position",
            "base_layer_decision": "state_overlay_transient_object",
            "render_role": "not_applicable",
            "top_down_legibility": "not_applicable"
          }
        ],
        "ignored_state_overlay_markers": [
          {
            "number": 25,
            "label": "steaming pot and rinsed herbal bundle",
            "category": "prop",
            "position_hint": "on or beside number 9 and number 10 in the kitchenette",
            "base_layer_decision": "state_overlay_transient_object",
            "render_role": "not_applicable",
            "top_down_legibility": "not_applicable"
          },
          {
            "number": 26,
            "label": "small circular wrist mark on seated adult",
            "category": "prop",
            "position_hint": "near number 11 in the shared dining area",
            "base_layer_decision": "state_overlay_plot_cue",
            "render_role": "not_applicable",
            "top_down_legibility": "not_applicable"
          },
          {
            "number": 27,
            "label": "two teacups, one overturned",
            "category": "prop",
            "position_hint": "on number 11 in the shared dining area",
            "base_layer_decision": "state_overlay_transient_object",
            "render_role": "not_applicable",
            "top_down_legibility": "not_applicable"
          },
          {
            "number": 28,
            "label": "bloodstains and bloody footprints to curtain",
            "category": "prop",
            "position_hint": "floor of number 5, leading from center of room toward number 19",
            "base_layer_decision": "state_overlay_plot_cue",
            "render_role": "not_applicable",
            "top_down_legibility": "not_applicable"
          },
          {
            "number": 29,
            "label": "seated corpse hidden behind curtain",
            "category": "prop",
            "position_hint": "behind number 19 in daughter bedroom",
            "base_layer_decision": "state_overlay_transient_object",
            "render_role": "not_applicable",
            "top_down_legibility": "not_applicable"
          },
          {
            "number": 30,
            "label": "crumpled old photo near corpse hand",
            "category": "prop",
            "position_hint": "near number 29 behind the curtain in daughter bedroom",
            "base_layer_decision": "state_overlay_transient_object",
            "render_role": "not_applicable",
            "top_down_legibility": "not_applicable"
          },
          {
            "number": 31,
            "label": "red circle on wall above daughter bed",
            "category": "prop",
            "position_hint": "wall above or near number 18 in daughter bedroom",
            "base_layer_decision": "state_overlay_plot_cue",
            "render_role": "not_applicable",
            "top_down_legibility": "not_applicable"
          },
          {
            "number": 33,
            "label": "red circle vision in bathroom mirror or wall",
            "category": "prop",
            "position_hint": "at number 22 in the bathroom",
            "base_layer_decision": "state_overlay_plot_cue",
            "render_role": "not_applicable",
            "top_down_legibility": "not_applicable"
          },
          {
            "number": 34,
            "label": "distorted face vision in framed photo",
            "category": "prop",
            "position_hint": "on number 24 in the shared living and dining zone",
            "base_layer_decision": "state_overlay_plot_cue",
            "render_role": "not_applicable",
            "top_down_legibility": "not_applicable"
          },
          {
            "number": 35,
            "label": "ransacked footprints across shared room",
            "category": "prop",
            "position_hint": "from number 7 across number 2 toward number 8 and number 17",
            "base_layer_decision": "state_overlay_plot_cue",
            "render_role": "not_applicable",
            "top_down_legibility": "not_applicable"
          },
          {
            "number": 36,
            "label": "living window left open",
            "category": "opening",
            "position_hint": "at number 8 on the east wall of the shared zone",
            "base_layer_decision": "state_overlay_plot_cue",
            "render_role": "not_applicable",
            "top_down_legibility": "not_applicable"
          },
          {
            "number": 37,
            "label": "overturned dining chairs",
            "category": "furniture",
            "position_hint": "around number 11 in the shared dining area",
            "base_layer_decision": "state_overlay_transient_object",
            "render_role": "not_applicable",
            "top_down_legibility": "not_applicable"
          },
          {
            "number": 39,
            "label": "red circle with bloody photo pinned at center",
            "category": "prop",
            "position_hint": "wall of number 5 above or near number 18",
            "base_layer_decision": "state_overlay_plot_cue",
            "render_role": "not_applicable",
            "top_down_legibility": "not_applicable"
          }
        ],
        "target_unit_marker_numbers": [
          5
        ],
        "dominant_target_unit_marker_number": 5,
        "clean_background_expected": false,
        "diagnostics": []
      },
      "L05B01": {
        "bg_id": "L05B01",
        "fp_id": "fp_l05_main_interior",
        "use_numbered_elements": [
          2,
          4,
          5,
          11,
          15,
          16,
          17,
          18,
          19,
          20,
          24,
          32
        ],
        "ignore_numbered_elements": [
          25,
          26,
          27,
          28,
          29,
          30,
          31,
          33,
          34,
          35,
          36,
          37,
          38,
          39
        ],
        "base_markers_to_reference": [
          {
            "number": 2,
            "label": "shared living and dining zone",
            "category": "area",
            "position_hint": "central main room connecting entry, kitchenette, bedrooms, and bathroom",
            "base_layer_decision": "base_structural_unit",
            "render_role": "not_applicable",
            "top_down_legibility": "not_applicable"
          },
          {
            "number": 4,
            "label": "mother bedroom",
            "category": "area",
            "position_hint": "northwest private room off the shared zone",
            "base_layer_decision": "base_structural_unit",
            "render_role": "not_applicable",
            "top_down_legibility": "not_applicable"
          },
          {
            "number": 5,
            "label": "daughter bedroom",
            "category": "area",
            "position_hint": "northeast private room off the shared zone",
            "base_layer_decision": "base_structural_unit",
            "render_role": "not_applicable",
            "top_down_legibility": "not_applicable"
          },
          {
            "number": 11,
            "label": "dining table",
            "category": "furniture",
            "position_hint": "center of shared living and dining zone",
            "base_layer_decision": "base_persistent_furniture",
            "render_role": "not_applicable",
            "top_down_legibility": "not_applicable"
          },
          {
            "number": 15,
            "label": "mother bedroom door",
            "category": "opening",
            "position_hint": "northwest side of shared zone leading into mother bedroom",
            "base_layer_decision": "base_opening",
            "render_role": "not_applicable",
            "top_down_legibility": "not_applicable"
          },
          {
            "number": 16,
            "label": "mother bed",
            "category": "furniture",
            "position_hint": "against the north wall inside mother bedroom",
            "base_layer_decision": "base_persistent_furniture",
            "render_role": "not_applicable",
            "top_down_legibility": "not_applicable"
          },
          {
            "number": 17,
            "label": "daughter bedroom door",
            "category": "opening",
            "position_hint": "northeast side of shared zone leading into daughter bedroom",
            "base_layer_decision": "base_opening",
            "render_role": "not_applicable",
            "top_down_legibility": "not_applicable"
          },
          {
            "number": 18,
            "label": "daughter bed",
            "category": "furniture",
            "position_hint": "against inner wall of daughter bedroom, below the marked wall position used in overlays",
            "base_layer_decision": "base_persistent_furniture",
            "render_role": "not_applicable",
            "top_down_legibility": "not_applicable"
          },
          {
            "number": 19,
            "label": "daughter window with curtain",
            "category": "opening",
            "position_hint": "outer wall of daughter bedroom, curtain directly in front of the window",
            "base_layer_decision": "base_opening",
            "render_role": "not_applicable",
            "top_down_legibility": "not_applicable"
          },
          {
            "number": 20,
            "label": "daughter wardrobe or closet",
            "category": "furniture",
            "position_hint": "side wall of daughter bedroom opposite the bed",
            "base_layer_decision": "base_persistent_furniture",
            "render_role": "not_applicable",
            "top_down_legibility": "not_applicable"
          },
          {
            "number": 24,
            "label": "framed family photo on shelf or table",
            "category": "prop",
            "position_hint": "shared living and dining zone near the dining table or side shelf",
            "base_layer_decision": "base_persistent_furniture",
            "render_role": "not_applicable",
            "top_down_legibility": "not_applicable"
          }
        ],
        "transient_markers_to_describe": [
          {
            "number": 32,
            "label": "overly clean restored surfaces",
            "category": "area",
            "position_hint": "daughter bedroom and dining table surfaces after violent traces vanish",
            "base_layer_decision": "state_overlay_plot_cue",
            "render_role": "not_applicable",
            "top_down_legibility": "not_applicable"
          }
        ],
        "ignored_state_overlay_markers": [
          {
            "number": 25,
            "label": "steaming pot and rinsed herbal bundle",
            "category": "prop",
            "position_hint": "on or beside number 9 and number 10 in the kitchenette",
            "base_layer_decision": "state_overlay_transient_object",
            "render_role": "not_applicable",
            "top_down_legibility": "not_applicable"
          },
          {
            "number": 26,
            "label": "small circular wrist mark on seated adult",
            "category": "prop",
            "position_hint": "near number 11 in the shared dining area",
            "base_layer_decision": "state_overlay_plot_cue",
            "render_role": "not_applicable",
            "top_down_legibility": "not_applicable"
          },
          {
            "number": 27,
            "label": "two teacups, one overturned",
            "category": "prop",
            "position_hint": "on number 11 in the shared dining area",
            "base_layer_decision": "state_overlay_transient_object",
            "render_role": "not_applicable",
            "top_down_legibility": "not_applicable"
          },
          {
            "number": 28,
            "label": "bloodstains and bloody footprints to curtain",
            "category": "prop",
            "position_hint": "floor of number 5, leading from center of room toward number 19",
            "base_layer_decision": "state_overlay_plot_cue",
            "render_role": "not_applicable",
            "top_down_legibility": "not_applicable"
          },
          {
            "number": 29,
            "label": "seated corpse hidden behind curtain",
            "category": "prop",
            "position_hint": "behind number 19 in daughter bedroom",
            "base_layer_decision": "state_overlay_transient_object",
            "render_role": "not_applicable",
            "top_down_legibility": "not_applicable"
          },
          {
            "number": 30,
            "label": "crumpled old photo near corpse hand",
            "category": "prop",
            "position_hint": "near number 29 behind the curtain in daughter bedroom",
            "base_layer_decision": "state_overlay_transient_object",
            "render_role": "not_applicable",
            "top_down_legibility": "not_applicable"
          },
          {
            "number": 31,
            "label": "red circle on wall above daughter bed",
            "category": "prop",
            "position_hint": "wall above or near number 18 in daughter bedroom",
            "base_layer_decision": "state_overlay_plot_cue",
            "render_role": "not_applicable",
            "top_down_legibility": "not_applicable"
          },
          {
            "number": 33,
            "label": "red circle vision in bathroom mirror or wall",
            "category": "prop",
            "position_hint": "at number 22 in the bathroom",
            "base_layer_decision": "state_overlay_plot_cue",
            "render_role": "not_applicable",
            "top_down_legibility": "not_applicable"
          },
          {
            "number": 34,
            "label": "distorted face vision in framed photo",
            "category": "prop",
            "position_hint": "on number 24 in the shared living and dining zone",
            "base_layer_decision": "state_overlay_plot_cue",
            "render_role": "not_applicable",
            "top_down_legibility": "not_applicable"
          },
          {
            "number": 35,
            "label": "ransacked footprints across shared room",
            "category": "prop",
            "position_hint": "from number 7 across number 2 toward number 8 and number 17",
            "base_layer_decision": "state_overlay_plot_cue",
            "render_role": "not_applicable",
            "top_down_legibility": "not_applicable"
          },
          {
            "number": 36,
            "label": "living window left open",
            "category": "opening",
            "position_hint": "at number 8 on the east wall of the shared zone",
            "base_layer_decision": "state_overlay_plot_cue",
            "render_role": "not_applicable",
            "top_down_legibility": "not_applicable"
          },
          {
            "number": 37,
            "label": "overturned dining chairs",
            "category": "furniture",
            "position_hint": "around number 11 in the shared dining area",
            "base_layer_decision": "state_overlay_transient_object",
            "render_role": "not_applicable",
            "top_down_legibility": "not_applicable"
          },
          {
            "number": 38,
            "label": "displaced backpack and doll",
            "category": "prop",
            "position_hint": "on floor or bed area of number 5, slightly shifted from earlier position",
            "base_layer_decision": "state_overlay_transient_object",
            "render_role": "not_applicable",
            "top_down_legibility": "not_applicable"
          },
          {
            "number": 39,
            "label": "red circle with bloody photo pinned at center",
            "category": "prop",
            "position_hint": "wall of number 5 above or near number 18",
            "base_layer_decision": "state_overlay_plot_cue",
            "render_role": "not_applicable",
            "top_down_legibility": "not_applicable"
          }
        ],
        "target_unit_marker_numbers": [
          2,
          4,
          5
        ],
        "dominant_target_unit_marker_number": null,
        "clean_background_expected": false,
        "diagnostics": [
          "multiple base_structural_unit markers in use_numbered_elements ([2, 4, 5]); dominant_target_unit_marker_number left empty (W19B-1 lock — no lexical disambiguation)"
        ]
      },
      "L05B02": {
        "bg_id": "L05B02",
        "fp_id": "fp_l05_main_interior",
        "use_numbered_elements": [
          2,
          3,
          6,
          8,
          11,
          21,
          22,
          23,
          24,
          33,
          34
        ],
        "ignore_numbered_elements": [
          25,
          26,
          27,
          28,
          29,
          30,
          31,
          32,
          35,
          36,
          37,
          38,
          39
        ],
        "base_markers_to_reference": [
          {
            "number": 2,
            "label": "shared living and dining zone",
            "category": "area",
            "position_hint": "central main room connecting entry, kitchenette, bedrooms, and bathroom",
            "base_layer_decision": "base_structural_unit",
            "render_role": "not_applicable",
            "top_down_legibility": "not_applicable"
          },
          {
            "number": 3,
            "label": "open kitchenette service strip",
            "category": "area",
            "position_hint": "west wall of the shared zone, open to living and dining",
            "base_layer_decision": "base_structural_unit",
            "render_role": "not_applicable",
            "top_down_legibility": "not_applicable"
          },
          {
            "number": 6,
            "label": "bathroom",
            "category": "area",
            "position_hint": "southeast service room near the entrance",
            "base_layer_decision": "base_structural_unit",
            "render_role": "not_applicable",
            "top_down_legibility": "not_applicable"
          },
          {
            "number": 8,
            "label": "small living room window",
            "category": "opening",
            "position_hint": "east wall of the shared living and dining zone",
            "base_layer_decision": "base_opening",
            "render_role": "not_applicable",
            "top_down_legibility": "not_applicable"
          },
          {
            "number": 11,
            "label": "dining table",
            "category": "furniture",
            "position_hint": "center of shared living and dining zone",
            "base_layer_decision": "base_persistent_furniture",
            "render_role": "not_applicable",
            "top_down_legibility": "not_applicable"
          },
          {
            "number": 21,
            "label": "bathroom door",
            "category": "opening",
            "position_hint": "southeast side of shared zone leading into bathroom",
            "base_layer_decision": "base_opening",
            "render_role": "not_applicable",
            "top_down_legibility": "not_applicable"
          },
          {
            "number": 22,
            "label": "bathroom sink and mirror",
            "category": "furniture",
            "position_hint": "inside bathroom along the wall facing the door",
            "base_layer_decision": "base_persistent_fixture",
            "render_role": "not_applicable",
            "top_down_legibility": "not_applicable"
          },
          {
            "number": 23,
            "label": "toilet and shower wet zone",
            "category": "furniture",
            "position_hint": "rear half of bathroom, opposite or beside the sink",
            "base_layer_decision": "base_persistent_fixture",
            "render_role": "not_applicable",
            "top_down_legibility": "not_applicable"
          },
          {
            "number": 24,
            "label": "framed family photo on shelf or table",
            "category": "prop",
            "position_hint": "shared living and dining zone near the dining table or side shelf",
            "base_layer_decision": "base_persistent_furniture",
            "render_role": "not_applicable",
            "top_down_legibility": "not_applicable"
          }
        ],
        "transient_markers_to_describe": [
          {
            "number": 33,
            "label": "red circle vision in bathroom mirror or wall",
            "category": "prop",
            "position_hint": "at number 22 in the bathroom",
            "base_layer_decision": "state_overlay_plot_cue",
            "render_role": "not_applicable",
            "top_down_legibility": "not_applicable"
          },
          {
            "number": 34,
            "label": "distorted face vision in framed photo",
            "category": "prop",
            "position_hint": "on number 24 in the shared living and dining zone",
            "base_layer_decision": "state_overlay_plot_cue",
            "render_role": "not_applicable",
            "top_down_legibility": "not_applicable"
          }
        ],
        "ignored_state_overlay_markers": [
          {
            "number": 25,
            "label": "steaming pot and rinsed herbal bundle",
            "category": "prop",
            "position_hint": "on or beside number 9 and number 10 in the kitchenette",
            "base_layer_decision": "state_overlay_transient_object",
            "render_role": "not_applicable",
            "top_down_legibility": "not_applicable"
          },
          {
            "number": 26,
            "label": "small circular wrist mark on seated adult",
            "category": "prop",
            "position_hint": "near number 11 in the shared dining area",
            "base_layer_decision": "state_overlay_plot_cue",
            "render_role": "not_applicable",
            "top_down_legibility": "not_applicable"
          },
          {
            "number": 27,
            "label": "two teacups, one overturned",
            "category": "prop",
            "position_hint": "on number 11 in the shared dining area",
            "base_layer_decision": "state_overlay_transient_object",
            "render_role": "not_applicable",
            "top_down_legibility": "not_applicable"
          },
          {
            "number": 28,
            "label": "bloodstains and bloody footprints to curtain",
            "category": "prop",
            "position_hint": "floor of number 5, leading from center of room toward number 19",
            "base_layer_decision": "state_overlay_plot_cue",
            "render_role": "not_applicable",
            "top_down_legibility": "not_applicable"
          },
          {
            "number": 29,
            "label": "seated corpse hidden behind curtain",
            "category": "prop",
            "position_hint": "behind number 19 in daughter bedroom",
            "base_layer_decision": "state_overlay_transient_object",
            "render_role": "not_applicable",
            "top_down_legibility": "not_applicable"
          },
          {
            "number": 30,
            "label": "crumpled old photo near corpse hand",
            "category": "prop",
            "position_hint": "near number 29 behind the curtain in daughter bedroom",
            "base_layer_decision": "state_overlay_transient_object",
            "render_role": "not_applicable",
            "top_down_legibility": "not_applicable"
          },
          {
            "number": 31,
            "label": "red circle on wall above daughter bed",
            "category": "prop",
            "position_hint": "wall above or near number 18 in daughter bedroom",
            "base_layer_decision": "state_overlay_plot_cue",
            "render_role": "not_applicable",
            "top_down_legibility": "not_applicable"
          },
          {
            "number": 32,
            "label": "overly clean restored surfaces",
            "category": "area",
            "position_hint": "daughter bedroom and dining table surfaces after violent traces vanish",
            "base_layer_decision": "state_overlay_plot_cue",
            "render_role": "not_applicable",
            "top_down_legibility": "not_applicable"
          },
          {
            "number": 35,
            "label": "ransacked footprints across shared room",
            "category": "prop",
            "position_hint": "from number 7 across number 2 toward number 8 and number 17",
            "base_layer_decision": "state_overlay_plot_cue",
            "render_role": "not_applicable",
            "top_down_legibility": "not_applicable"
          },
          {
            "number": 36,
            "label": "living window left open",
            "category": "opening",
            "position_hint": "at number 8 on the east wall of the shared zone",
            "base_layer_decision": "state_overlay_plot_cue",
            "render_role": "not_applicable",
            "top_down_legibility": "not_applicable"
          },
          {
            "number": 37,
            "label": "overturned dining chairs",
            "category": "furniture",
            "position_hint": "around number 11 in the shared dining area",
            "base_layer_decision": "state_overlay_transient_object",
            "render_role": "not_applicable",
            "top_down_legibility": "not_applicable"
          },
          {
            "number": 38,
            "label": "displaced backpack and doll",
            "category": "prop",
            "position_hint": "on floor or bed area of number 5, slightly shifted from earlier position",
            "base_layer_decision": "state_overlay_transient_object",
            "render_role": "not_applicable",
            "top_down_legibility": "not_applicable"
          },
          {
            "number": 39,
            "label": "red circle with bloody photo pinned at center",
            "category": "prop",
            "position_hint": "wall of number 5 above or near number 18",
            "base_layer_decision": "state_overlay_plot_cue",
            "render_role": "not_applicable",
            "top_down_legibility": "not_applicable"
          }
        ],
        "target_unit_marker_numbers": [
          2,
          3,
          6
        ],
        "dominant_target_unit_marker_number": null,
        "clean_background_expected": false,
        "diagnostics": [
          "multiple base_structural_unit markers in use_numbered_elements ([2, 3, 6]); dominant_target_unit_marker_number left empty (W19B-1 lock — no lexical disambiguation)"
        ]
      },
      "L05B05": {
        "bg_id": "L05B05",
        "fp_id": "fp_l05_main_interior",
        "use_numbered_elements": [
          1,
          2,
          3,
          5,
          7,
          8,
          9,
          10,
          11,
          12,
          13,
          17,
          18,
          19,
          20,
          24,
          35,
          36,
          37,
          39
        ],
        "ignore_numbered_elements": [
          25,
          26,
          27,
          28,
          29,
          30,
          31,
          32,
          33,
          34,
          38
        ],
        "base_markers_to_reference": [
          {
            "number": 1,
            "label": "entry threshold zone",
            "category": "area",
            "position_hint": "south side of unit, immediately inside the entrance door",
            "base_layer_decision": "base_structural_unit",
            "render_role": "not_applicable",
            "top_down_legibility": "not_applicable"
          },
          {
            "number": 2,
            "label": "shared living and dining zone",
            "category": "area",
            "position_hint": "central main room connecting entry, kitchenette, bedrooms, and bathroom",
            "base_layer_decision": "base_structural_unit",
            "render_role": "not_applicable",
            "top_down_legibility": "not_applicable"
          },
          {
            "number": 3,
            "label": "open kitchenette service strip",
            "category": "area",
            "position_hint": "west wall of the shared zone, open to living and dining",
            "base_layer_decision": "base_structural_unit",
            "render_role": "not_applicable",
            "top_down_legibility": "not_applicable"
          },
          {
            "number": 5,
            "label": "daughter bedroom",
            "category": "area",
            "position_hint": "northeast private room off the shared zone",
            "base_layer_decision": "base_structural_unit",
            "render_role": "not_applicable",
            "top_down_legibility": "not_applicable"
          },
          {
            "number": 7,
            "label": "metal entrance door",
            "category": "opening",
            "position_hint": "south exterior wall opening into the entry threshold",
            "base_layer_decision": "base_opening",
            "render_role": "not_applicable",
            "top_down_legibility": "not_applicable"
          },
          {
            "number": 8,
            "label": "small living room window",
            "category": "opening",
            "position_hint": "east wall of the shared living and dining zone",
            "base_layer_decision": "base_opening",
            "render_role": "not_applicable",
            "top_down_legibility": "not_applicable"
          },
          {
            "number": 9,
            "label": "kitchen counter with sink and faucet",
            "category": "furniture",
            "position_hint": "west wall of the kitchenette service strip",
            "base_layer_decision": "base_persistent_fixture",
            "render_role": "not_applicable",
            "top_down_legibility": "not_applicable"
          },
          {
            "number": 10,
            "label": "stovetop on kitchen counter",
            "category": "furniture",
            "position_hint": "west wall kitchenette counter, near the sink",
            "base_layer_decision": "base_persistent_fixture",
            "render_role": "not_applicable",
            "top_down_legibility": "not_applicable"
          },
          {
            "number": 11,
            "label": "dining table",
            "category": "furniture",
            "position_hint": "center of shared living and dining zone",
            "base_layer_decision": "base_persistent_furniture",
            "render_role": "not_applicable",
            "top_down_legibility": "not_applicable"
          },
          {
            "number": 12,
            "label": "dining chairs",
            "category": "furniture",
            "position_hint": "around the dining table in the shared zone",
            "base_layer_decision": "base_persistent_furniture",
            "render_role": "not_applicable",
            "top_down_legibility": "not_applicable"
          },
          {
            "number": 13,
            "label": "television on low stand",
            "category": "furniture",
            "position_hint": "north side of shared zone, visible from dining table",
            "base_layer_decision": "base_persistent_furniture",
            "render_role": "not_applicable",
            "top_down_legibility": "not_applicable"
          },
          {
            "number": 17,
            "label": "daughter bedroom door",
            "category": "opening",
            "position_hint": "northeast side of shared zone leading into daughter bedroom",
            "base_layer_decision": "base_opening",
            "render_role": "not_applicable",
            "top_down_legibility": "not_applicable"
          },
          {
            "number": 18,
            "label": "daughter bed",
            "category": "furniture",
            "position_hint": "against inner wall of daughter bedroom, below the marked wall position used in overlays",
            "base_layer_decision": "base_persistent_furniture",
            "render_role": "not_applicable",
            "top_down_legibility": "not_applicable"
          },
          {
            "number": 19,
            "label": "daughter window with curtain",
            "category": "opening",
            "position_hint": "outer wall of daughter bedroom, curtain directly in front of the window",
            "base_layer_decision": "base_opening",
            "render_role": "not_applicable",
            "top_down_legibility": "not_applicable"
          },
          {
            "number": 20,
            "label": "daughter wardrobe or closet",
            "category": "furniture",
            "position_hint": "side wall of daughter bedroom opposite the bed",
            "base_layer_decision": "base_persistent_furniture",
            "render_role": "not_applicable",
            "top_down_legibility": "not_applicable"
          },
          {
            "number": 24,
            "label": "framed family photo on shelf or table",
            "category": "prop",
            "position_hint": "shared living and dining zone near the dining table or side shelf",
            "base_layer_decision": "base_persistent_furniture",
            "render_role": "not_applicable",
            "top_down_legibility": "not_applicable"
          }
        ],
        "transient_markers_to_describe": [
          {
            "number": 35,
            "label": "ransacked footprints across shared room",
            "category": "prop",
            "position_hint": "from number 7 across number 2 toward number 8 and number 17",
            "base_layer_decision": "state_overlay_plot_cue",
            "render_role": "not_applicable",
            "top_down_legibility": "not_applicable"
          },
          {
            "number": 36,
            "label": "living window left open",
            "category": "opening",
            "position_hint": "at number 8 on the east wall of the shared zone",
            "base_layer_decision": "state_overlay_plot_cue",
            "render_role": "not_applicable",
            "top_down_legibility": "not_applicable"
          },
          {
            "number": 37,
            "label": "overturned dining chairs",
            "category": "furniture",
            "position_hint": "around number 11 in the shared dining area",
            "base_layer_decision": "state_overlay_transient_object",
            "render_role": "not_applicable",
            "top_down_legibility": "not_applicable"
          },
          {
            "number": 39,
            "label": "red circle with bloody photo pinned at center",
            "category": "prop",
            "position_hint": "wall of number 5 above or near number 18",
            "base_layer_decision": "state_overlay_plot_cue",
            "render_role": "not_applicable",
            "top_down_legibility": "not_applicable"
          }
        ],
        "ignored_state_overlay_markers": [
          {
            "number": 25,
            "label": "steaming pot and rinsed herbal bundle",
            "category": "prop",
            "position_hint": "on or beside number 9 and number 10 in the kitchenette",
            "base_layer_decision": "state_overlay_transient_object",
            "render_role": "not_applicable",
            "top_down_legibility": "not_applicable"
          },
          {
            "number": 26,
            "label": "small circular wrist mark on seated adult",
            "category": "prop",
            "position_hint": "near number 11 in the shared dining area",
            "base_layer_decision": "state_overlay_plot_cue",
            "render_role": "not_applicable",
            "top_down_legibility": "not_applicable"
          },
          {
            "number": 27,
            "label": "two teacups, one overturned",
            "category": "prop",
            "position_hint": "on number 11 in the shared dining area",
            "base_layer_decision": "state_overlay_transient_object",
            "render_role": "not_applicable",
            "top_down_legibility": "not_applicable"
          },
          {
            "number": 28,
            "label": "bloodstains and bloody footprints to curtain",
            "category": "prop",
            "position_hint": "floor of number 5, leading from center of room toward number 19",
            "base_layer_decision": "state_overlay_plot_cue",
            "render_role": "not_applicable",
            "top_down_legibility": "not_applicable"
          },
          {
            "number": 29,
            "label": "seated corpse hidden behind curtain",
            "category": "prop",
            "position_hint": "behind number 19 in daughter bedroom",
            "base_layer_decision": "state_overlay_transient_object",
            "render_role": "not_applicable",
            "top_down_legibility": "not_applicable"
          },
          {
            "number": 30,
            "label": "crumpled old photo near corpse hand",
            "category": "prop",
            "position_hint": "near number 29 behind the curtain in daughter bedroom",
            "base_layer_decision": "state_overlay_transient_object",
            "render_role": "not_applicable",
            "top_down_legibility": "not_applicable"
          },
          {
            "number": 31,
            "label": "red circle on wall above daughter bed",
            "category": "prop",
            "position_hint": "wall above or near number 18 in daughter bedroom",
            "base_layer_decision": "state_overlay_plot_cue",
            "render_role": "not_applicable",
            "top_down_legibility": "not_applicable"
          },
          {
            "number": 32,
            "label": "overly clean restored surfaces",
            "category": "area",
            "position_hint": "daughter bedroom and dining table surfaces after violent traces vanish",
            "base_layer_decision": "state_overlay_plot_cue",
            "render_role": "not_applicable",
            "top_down_legibility": "not_applicable"
          },
          {
            "number": 33,
            "label": "red circle vision in bathroom mirror or wall",
            "category": "prop",
            "position_hint": "at number 22 in the bathroom",
            "base_layer_decision": "state_overlay_plot_cue",
            "render_role": "not_applicable",
            "top_down_legibility": "not_applicable"
          },
          {
            "number": 34,
            "label": "distorted face vision in framed photo",
            "category": "prop",
            "position_hint": "on number 24 in the shared living and dining zone",
            "base_layer_decision": "state_overlay_plot_cue",
            "render_role": "not_applicable",
            "top_down_legibility": "not_applicable"
          },
          {
            "number": 38,
            "label": "displaced backpack and doll",
            "category": "prop",
            "position_hint": "on floor or bed area of number 5, slightly shifted from earlier position",
            "base_layer_decision": "state_overlay_transient_object",
            "render_role": "not_applicable",
            "top_down_legibility": "not_applicable"
          }
        ],
        "target_unit_marker_numbers": [
          1,
          2,
          3,
          5
        ],
        "dominant_target_unit_marker_number": null,
        "clean_background_expected": false,
        "diagnostics": [
          "multiple base_structural_unit markers in use_numbered_elements ([1, 2, 3, 5]); dominant_target_unit_marker_number left empty (W19B-1 lock — no lexical disambiguation)"
        ]
      },
      "L05B04": {
        "bg_id": "L05B04",
        "fp_id": "fp_l05_main_interior",
        "use_numbered_elements": [
          5,
          17,
          18,
          19,
          20,
          39
        ],
        "ignore_numbered_elements": [
          25,
          26,
          27,
          28,
          29,
          30,
          31,
          32,
          33,
          34,
          35,
          36,
          37,
          38
        ],
        "base_markers_to_reference": [
          {
            "number": 5,
            "label": "daughter bedroom",
            "category": "area",
            "position_hint": "northeast private room off the shared zone",
            "base_layer_decision": "base_structural_unit",
            "render_role": "not_applicable",
            "top_down_legibility": "not_applicable"
          },
          {
            "number": 17,
            "label": "daughter bedroom door",
            "category": "opening",
            "position_hint": "northeast side of shared zone leading into daughter bedroom",
            "base_layer_decision": "base_opening",
            "render_role": "not_applicable",
            "top_down_legibility": "not_applicable"
          },
          {
            "number": 18,
            "label": "daughter bed",
            "category": "furniture",
            "position_hint": "against inner wall of daughter bedroom, below the marked wall position used in overlays",
            "base_layer_decision": "base_persistent_furniture",
            "render_role": "not_applicable",
            "top_down_legibility": "not_applicable"
          },
          {
            "number": 19,
            "label": "daughter window with curtain",
            "category": "opening",
            "position_hint": "outer wall of daughter bedroom, curtain directly in front of the window",
            "base_layer_decision": "base_opening",
            "render_role": "not_applicable",
            "top_down_legibility": "not_applicable"
          },
          {
            "number": 20,
            "label": "daughter wardrobe or closet",
            "category": "furniture",
            "position_hint": "side wall of daughter bedroom opposite the bed",
            "base_layer_decision": "base_persistent_furniture",
            "render_role": "not_applicable",
            "top_down_legibility": "not_applicable"
          }
        ],
        "transient_markers_to_describe": [
          {
            "number": 39,
            "label": "red circle with bloody photo pinned at center",
            "category": "prop",
            "position_hint": "wall of number 5 above or near number 18",
            "base_layer_decision": "state_overlay_plot_cue",
            "render_role": "not_applicable",
            "top_down_legibility": "not_applicable"
          }
        ],
        "ignored_state_overlay_markers": [
          {
            "number": 25,
            "label": "steaming pot and rinsed herbal bundle",
            "category": "prop",
            "position_hint": "on or beside number 9 and number 10 in the kitchenette",
            "base_layer_decision": "state_overlay_transient_object",
            "render_role": "not_applicable",
            "top_down_legibility": "not_applicable"
          },
          {
            "number": 26,
            "label": "small circular wrist mark on seated adult",
            "category": "prop",
            "position_hint": "near number 11 in the shared dining area",
            "base_layer_decision": "state_overlay_plot_cue",
            "render_role": "not_applicable",
            "top_down_legibility": "not_applicable"
          },
          {
            "number": 27,
            "label": "two teacups, one overturned",
            "category": "prop",
            "position_hint": "on number 11 in the shared dining area",
            "base_layer_decision": "state_overlay_transient_object",
            "render_role": "not_applicable",
            "top_down_legibility": "not_applicable"
          },
          {
            "number": 28,
            "label": "bloodstains and bloody footprints to curtain",
            "category": "prop",
            "position_hint": "floor of number 5, leading from center of room toward number 19",
            "base_layer_decision": "state_overlay_plot_cue",
            "render_role": "not_applicable",
            "top_down_legibility": "not_applicable"
          },
          {
            "number": 29,
            "label": "seated corpse hidden behind curtain",
            "category": "prop",
            "position_hint": "behind number 19 in daughter bedroom",
            "base_layer_decision": "state_overlay_transient_object",
            "render_role": "not_applicable",
            "top_down_legibility": "not_applicable"
          },
          {
            "number": 30,
            "label": "crumpled old photo near corpse hand",
            "category": "prop",
            "position_hint": "near number 29 behind the curtain in daughter bedroom",
            "base_layer_decision": "state_overlay_transient_object",
            "render_role": "not_applicable",
            "top_down_legibility": "not_applicable"
          },
          {
            "number": 31,
            "label": "red circle on wall above daughter bed",
            "category": "prop",
            "position_hint": "wall above or near number 18 in daughter bedroom",
            "base_layer_decision": "state_overlay_plot_cue",
            "render_role": "not_applicable",
            "top_down_legibility": "not_applicable"
          },
          {
            "number": 32,
            "label": "overly clean restored surfaces",
            "category": "area",
            "position_hint": "daughter bedroom and dining table surfaces after violent traces vanish",
            "base_layer_decision": "state_overlay_plot_cue",
            "render_role": "not_applicable",
            "top_down_legibility": "not_applicable"
          },
          {
            "number": 33,
            "label": "red circle vision in bathroom mirror or wall",
            "category": "prop",
            "position_hint": "at number 22 in the bathroom",
            "base_layer_decision": "state_overlay_plot_cue",
            "render_role": "not_applicable",
            "top_down_legibility": "not_applicable"
          },
          {
            "number": 34,
            "label": "distorted face vision in framed photo",
            "category": "prop",
            "position_hint": "on number 24 in the shared living and dining zone",
            "base_layer_decision": "state_overlay_plot_cue",
            "render_role": "not_applicable",
            "top_down_legibility": "not_applicable"
          },
          {
            "number": 35,
            "label": "ransacked footprints across shared room",
            "category": "prop",
            "position_hint": "from number 7 across number 2 toward number 8 and number 17",
            "base_layer_decision": "state_overlay_plot_cue",
            "render_role": "not_applicable",
            "top_down_legibility": "not_applicable"
          },
          {
            "number": 36,
            "label": "living window left open",
            "category": "opening",
            "position_hint": "at number 8 on the east wall of the shared zone",
            "base_layer_decision": "state_overlay_plot_cue",
            "render_role": "not_applicable",
            "top_down_legibility": "not_applicable"
          },
          {
            "number": 37,
            "label": "overturned dining chairs",
            "category": "furniture",
            "position_hint": "around number 11 in the shared dining area",
            "base_layer_decision": "state_overlay_transient_object",
            "render_role": "not_applicable",
            "top_down_legibility": "not_applicable"
          },
          {
            "number": 38,
            "label": "displaced backpack and doll",
            "category": "prop",
            "position_hint": "on floor or bed area of number 5, slightly shifted from earlier position",
            "base_layer_decision": "state_overlay_transient_object",
            "render_role": "not_applicable",
            "top_down_legibility": "not_applicable"
          }
        ],
        "target_unit_marker_numbers": [
          5
        ],
        "dominant_target_unit_marker_number": 5,
        "clean_background_expected": false,
        "diagnostics": []
      },
      "L11B03": {
        "bg_id": "L11B03",
        "fp_id": "fp_l11_exterior_stairs",
        "use_numbered_elements": [
          5,
          6,
          7,
          8,
          9,
          10,
          11,
          12,
          15,
          16,
          17
        ],
        "ignore_numbered_elements": [
          18
        ],
        "base_markers_to_reference": [
          {
            "number": 5,
            "label": "rooftop landing",
            "category": "area",
            "position_hint": "north side of plan, directly before the rooftop-room entrance",
            "base_layer_decision": "base_structural_unit",
            "render_role": "not_applicable",
            "top_down_legibility": "not_applicable"
          },
          {
            "number": 6,
            "label": "rooftop parapet edge",
            "category": "area",
            "position_hint": "around the exposed rooftop perimeter, especially north and east edges",
            "base_layer_decision": "base_structural_unit",
            "render_role": "not_applicable",
            "top_down_legibility": "not_applicable"
          },
          {
            "number": 7,
            "label": "rooftop room entrance frontage",
            "category": "area",
            "position_hint": "northwest rooftop building mass facing the landing",
            "base_layer_decision": "base_structural_unit",
            "render_role": "not_applicable",
            "top_down_legibility": "not_applicable"
          },
          {
            "number": 8,
            "label": "iron rooftop room door",
            "category": "opening",
            "position_hint": "on the rooftop room frontage, opening onto the rooftop landing",
            "base_layer_decision": "base_opening",
            "render_role": "not_applicable",
            "top_down_legibility": "not_applicable"
          },
          {
            "number": 9,
            "label": "small exterior window",
            "category": "opening",
            "position_hint": "on the rooftop room exterior wall near the entrance door",
            "base_layer_decision": "base_opening",
            "render_role": "not_applicable",
            "top_down_legibility": "not_applicable"
          },
          {
            "number": 10,
            "label": "roof water tank",
            "category": "prop",
            "position_hint": "northeast rooftop utility corner",
            "base_layer_decision": "base_persistent_fixture",
            "render_role": "not_applicable",
            "top_down_legibility": "not_applicable"
          },
          {
            "number": 11,
            "label": "fixed clothesline posts",
            "category": "prop",
            "position_hint": "across the open rooftop area near the water tank",
            "base_layer_decision": "base_persistent_fixture",
            "render_role": "not_applicable",
            "top_down_legibility": "not_applicable"
          },
          {
            "number": 12,
            "label": "low outdoor drying platform",
            "category": "furniture",
            "position_hint": "open rooftop area beside the clothesline route",
            "base_layer_decision": "base_persistent_furniture",
            "render_role": "not_applicable",
            "top_down_legibility": "not_applicable"
          }
        ],
        "transient_markers_to_describe": [
          {
            "number": 15,
            "label": "foul odor at rooftop threshold",
            "category": "prop",
            "position_hint": "around the rooftop landing and iron door approach; overlay only, not drawn on base floor plan",
            "base_layer_decision": "state_overlay_plot_cue",
            "render_role": "not_applicable",
            "top_down_legibility": "not_applicable"
          },
          {
            "number": 16,
            "label": "iron door half-open state",
            "category": "opening",
            "position_hint": "at the rooftop room door; overlay only, not drawn on base floor plan",
            "base_layer_decision": "state_overlay_plot_cue",
            "render_role": "not_applicable",
            "top_down_legibility": "not_applicable"
          },
          {
            "number": 17,
            "label": "loosely parked bicycle",
            "category": "prop",
            "position_hint": "rear yard near the stair base after arrival; overlay only, not drawn on base floor plan",
            "base_layer_decision": "state_overlay_transient_object",
            "render_role": "not_applicable",
            "top_down_legibility": "not_applicable"
          }
        ],
        "ignored_state_overlay_markers": [
          {
            "number": 18,
            "label": "frantic descent path down stairs",
            "category": "area",
            "position_hint": "from rooftop landing down the upper flight, switchback landing, lower flight, and toward the rear yard; overlay only, not drawn on base floor plan",
            "base_layer_decision": "state_overlay_plot_cue",
            "render_role": "not_applicable",
            "top_down_legibility": "not_applicable"
          }
        ],
        "target_unit_marker_numbers": [
          5,
          6,
          7
        ],
        "dominant_target_unit_marker_number": null,
        "clean_background_expected": false,
        "diagnostics": [
          "multiple base_structural_unit markers in use_numbered_elements ([5, 6, 7]); dominant_target_unit_marker_number left empty (W19B-1 lock — no lexical disambiguation)"
        ]
      },
      "L11B02": {
        "bg_id": "L11B02",
        "fp_id": "fp_l11_exterior_stairs",
        "use_numbered_elements": [
          1,
          2,
          3,
          4,
          5,
          6,
          7,
          8,
          13,
          14,
          18
        ],
        "ignore_numbered_elements": [
          15,
          16,
          17
        ],
        "base_markers_to_reference": [
          {
            "number": 1,
            "label": "rear villa yard",
            "category": "area",
            "position_hint": "south side of plan, at the base of the exterior stairs",
            "base_layer_decision": "base_structural_unit",
            "render_role": "not_applicable",
            "top_down_legibility": "not_applicable"
          },
          {
            "number": 2,
            "label": "lower steep exterior stair flight",
            "category": "area",
            "position_hint": "rising from the rear yard along the west side toward the first landing",
            "base_layer_decision": "base_structural_unit",
            "render_role": "not_applicable",
            "top_down_legibility": "not_applicable"
          },
          {
            "number": 3,
            "label": "intermediate switchback landing",
            "category": "area",
            "position_hint": "middle of the stair route, between lower and upper flights",
            "base_layer_decision": "base_structural_unit",
            "render_role": "not_applicable",
            "top_down_legibility": "not_applicable"
          },
          {
            "number": 4,
            "label": "upper steep exterior stair flight",
            "category": "area",
            "position_hint": "rising from the intermediate landing toward the rooftop landing",
            "base_layer_decision": "base_structural_unit",
            "render_role": "not_applicable",
            "top_down_legibility": "not_applicable"
          },
          {
            "number": 5,
            "label": "rooftop landing",
            "category": "area",
            "position_hint": "north side of plan, directly before the rooftop-room entrance",
            "base_layer_decision": "base_structural_unit",
            "render_role": "not_applicable",
            "top_down_legibility": "not_applicable"
          },
          {
            "number": 6,
            "label": "rooftop parapet edge",
            "category": "area",
            "position_hint": "around the exposed rooftop perimeter, especially north and east edges",
            "base_layer_decision": "base_structural_unit",
            "render_role": "not_applicable",
            "top_down_legibility": "not_applicable"
          },
          {
            "number": 7,
            "label": "rooftop room entrance frontage",
            "category": "area",
            "position_hint": "northwest rooftop building mass facing the landing",
            "base_layer_decision": "base_structural_unit",
            "render_role": "not_applicable",
            "top_down_legibility": "not_applicable"
          },
          {
            "number": 8,
            "label": "iron rooftop room door",
            "category": "opening",
            "position_hint": "on the rooftop room frontage, opening onto the rooftop landing",
            "base_layer_decision": "base_opening",
            "render_role": "not_applicable",
            "top_down_legibility": "not_applicable"
          },
          {
            "number": 13,
            "label": "narrow side passage",
            "category": "area",
            "position_hint": "southwest side of plan, connecting rear yard to the stair base",
            "base_layer_decision": "base_structural_unit",
            "render_role": "not_applicable",
            "top_down_legibility": "not_applicable"
          },
          {
            "number": 14,
            "label": "yard gate to alley",
            "category": "opening",
            "position_hint": "south edge of the rear yard leading out to the alley",
            "base_layer_decision": "base_opening",
            "render_role": "not_applicable",
            "top_down_legibility": "not_applicable"
          }
        ],
        "transient_markers_to_describe": [
          {
            "number": 18,
            "label": "frantic descent path down stairs",
            "category": "area",
            "position_hint": "from rooftop landing down the upper flight, switchback landing, lower flight, and toward the rear yard; overlay only, not drawn on base floor plan",
            "base_layer_decision": "state_overlay_plot_cue",
            "render_role": "not_applicable",
            "top_down_legibility": "not_applicable"
          }
        ],
        "ignored_state_overlay_markers": [
          {
            "number": 15,
            "label": "foul odor at rooftop threshold",
            "category": "prop",
            "position_hint": "around the rooftop landing and iron door approach; overlay only, not drawn on base floor plan",
            "base_layer_decision": "state_overlay_plot_cue",
            "render_role": "not_applicable",
            "top_down_legibility": "not_applicable"
          },
          {
            "number": 16,
            "label": "iron door half-open state",
            "category": "opening",
            "position_hint": "at the rooftop room door; overlay only, not drawn on base floor plan",
            "base_layer_decision": "state_overlay_plot_cue",
            "render_role": "not_applicable",
            "top_down_legibility": "not_applicable"
          },
          {
            "number": 17,
            "label": "loosely parked bicycle",
            "category": "prop",
            "position_hint": "rear yard near the stair base after arrival; overlay only, not drawn on base floor plan",
            "base_layer_decision": "state_overlay_transient_object",
            "render_role": "not_applicable",
            "top_down_legibility": "not_applicable"
          }
        ],
        "target_unit_marker_numbers": [
          1,
          2,
          3,
          4,
          5,
          6,
          7,
          13
        ],
        "dominant_target_unit_marker_number": null,
        "clean_background_expected": false,
        "diagnostics": [
          "multiple base_structural_unit markers in use_numbered_elements ([1, 2, 3, 4, 5, 6, 7, 13]); dominant_target_unit_marker_number left empty (W19B-1 lock — no lexical disambiguation)"
        ]
      },
      "L11B01": {
        "bg_id": "L11B01",
        "fp_id": "fp_l11_yard_entry",
        "use_numbered_elements": [
          1,
          2,
          3,
          4,
          5,
          6,
          7,
          8,
          9,
          10,
          11,
          12,
          13,
          14,
          15,
          16
        ],
        "ignore_numbered_elements": [],
        "base_markers_to_reference": [
          {
            "number": 1,
            "label": "shared paved entry yard",
            "category": "area",
            "position_hint": "center of villa entrance yard, inside the gate",
            "base_layer_decision": "base_structural_unit",
            "render_role": "not_applicable",
            "top_down_legibility": "not_applicable"
          },
          {
            "number": 2,
            "label": "narrow alley threshold",
            "category": "area",
            "position_hint": "south edge outside the yard gate",
            "base_layer_decision": "base_structural_unit",
            "render_role": "not_applicable",
            "top_down_legibility": "not_applicable"
          },
          {
            "number": 3,
            "label": "recessed bike parking niche",
            "category": "area",
            "position_hint": "left rear corner of the yard, slightly tucked away from the main path",
            "base_layer_decision": "base_structural_unit",
            "render_role": "not_applicable",
            "top_down_legibility": "not_applicable"
          },
          {
            "number": 4,
            "label": "metal entrance gate",
            "category": "opening",
            "position_hint": "south boundary between alley threshold and yard",
            "base_layer_decision": "base_opening",
            "render_role": "not_applicable",
            "top_down_legibility": "not_applicable"
          },
          {
            "number": 5,
            "label": "building entry door",
            "category": "opening",
            "position_hint": "east side of yard at the base of the stair access area",
            "base_layer_decision": "base_opening",
            "render_role": "not_applicable",
            "top_down_legibility": "not_applicable"
          },
          {
            "number": 6,
            "label": "exterior stair base landing",
            "category": "area",
            "position_hint": "east side of yard, just inside the building access zone",
            "base_layer_decision": "base_structural_unit",
            "render_role": "not_applicable",
            "top_down_legibility": "not_applicable"
          },
          {
            "number": 7,
            "label": "exterior stair run upward",
            "category": "area",
            "position_hint": "along east wall, rising from the landing toward the rooftop rooms",
            "base_layer_decision": "base_structural_unit",
            "render_role": "not_applicable",
            "top_down_legibility": "not_applicable"
          },
          {
            "number": 8,
            "label": "villa facade wall line",
            "category": "area",
            "position_hint": "north and east edges enclosing the yard",
            "base_layer_decision": "base_structural_unit",
            "render_role": "not_applicable",
            "top_down_legibility": "not_applicable"
          },
          {
            "number": 9,
            "label": "fixed bicycle rack",
            "category": "prop",
            "position_hint": "inside the recessed bike parking niche",
            "base_layer_decision": "base_persistent_fixture",
            "render_role": "not_applicable",
            "top_down_legibility": "not_applicable"
          },
          {
            "number": 10,
            "label": "utility meter box",
            "category": "prop",
            "position_hint": "on the building facade near the stair base",
            "base_layer_decision": "base_persistent_fixture",
            "render_role": "not_applicable",
            "top_down_legibility": "not_applicable"
          },
          {
            "number": 11,
            "label": "mailbox and intercom panel",
            "category": "prop",
            "position_hint": "inside wall near the metal entrance gate",
            "base_layer_decision": "base_persistent_fixture",
            "render_role": "not_applicable",
            "top_down_legibility": "not_applicable"
          },
          {
            "number": 12,
            "label": "small drain grate",
            "category": "prop",
            "position_hint": "low point of the paved yard near the center-left floor",
            "base_layer_decision": "base_persistent_fixture",
            "render_role": "not_applicable",
            "top_down_legibility": "not_applicable"
          },
          {
            "number": 13,
            "label": "stairwell window",
            "category": "opening",
            "position_hint": "on the building wall above or beside the stair access zone",
            "base_layer_decision": "base_opening",
            "render_role": "not_applicable",
            "top_down_legibility": "not_applicable"
          }
        ],
        "transient_markers_to_describe": [
          {
            "number": 14,
            "label": "loosely parked bicycle",
            "category": "prop",
            "position_hint": "temporarily left in the recessed bike parking niche near number 3",
            "base_layer_decision": "state_overlay_transient_object",
            "render_role": "not_applicable",
            "top_down_legibility": "not_applicable"
          },
          {
            "number": 15,
            "label": "police vehicle outside gate",
            "category": "prop",
            "position_hint": "on the alley side just beyond number 4, partly outside the yard plan boundary",
            "base_layer_decision": "state_overlay_transient_object",
            "render_role": "not_applicable",
            "top_down_legibility": "not_applicable"
          },
          {
            "number": 16,
            "label": "siren light wash",
            "category": "prop",
            "position_hint": "temporary colored light spill crossing the gate and paved yard during the night arrival",
            "base_layer_decision": "state_overlay_plot_cue",
            "render_role": "not_applicable",
            "top_down_legibility": "not_applicable"
          }
        ],
        "ignored_state_overlay_markers": [],
        "target_unit_marker_numbers": [
          1,
          2,
          3,
          6,
          7,
          8
        ],
        "dominant_target_unit_marker_number": null,
        "clean_background_expected": false,
        "diagnostics": [
          "multiple base_structural_unit markers in use_numbered_elements ([1, 2, 3, 6, 7, 8]); dominant_target_unit_marker_number left empty (W19B-1 lock — no lexical disambiguation)"
        ]
      },
      "L09B01": {
        "bg_id": "L09B01",
        "fp_id": "fp_mart_sales_floor",
        "use_numbered_elements": [
          1,
          2,
          3,
          4,
          5,
          6,
          7,
          8,
          9,
          10,
          11,
          12,
          13,
          14,
          15,
          16
        ],
        "ignore_numbered_elements": [],
        "base_markers_to_reference": [
          {
            "number": 1,
            "label": "main sales floor zone",
            "category": "area",
            "position_hint": "large central customer shopping area occupying most of the plan",
            "base_layer_decision": "base_structural_unit",
            "render_role": "not_applicable",
            "top_down_legibility": "not_applicable"
          },
          {
            "number": 2,
            "label": "checkout service zone",
            "category": "area",
            "position_hint": "southwest band near the front entry, facing the customer circulation",
            "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": "south center inside the street-facing entry edge",
            "base_layer_decision": "base_structural_unit",
            "render_role": "not_applicable",
            "top_down_legibility": "not_applicable"
          },
          {
            "number": 4,
            "label": "rear stock access zone",
            "category": "area",
            "position_hint": "northeast rear strip behind the sales floor fixtures",
            "base_layer_decision": "base_structural_unit",
            "render_role": "not_applicable",
            "top_down_legibility": "not_applicable"
          },
          {
            "number": 5,
            "label": "automatic sliding entrance",
            "category": "opening",
            "position_hint": "south wall, centered on the entry threshold zone",
            "base_layer_decision": "base_opening",
            "render_role": "not_applicable",
            "top_down_legibility": "not_applicable"
          },
          {
            "number": 6,
            "label": "front glass window band",
            "category": "opening",
            "position_hint": "south wall on both sides of the entrance",
            "base_layer_decision": "base_opening",
            "render_role": "not_applicable",
            "top_down_legibility": "not_applicable"
          },
          {
            "number": 7,
            "label": "rear staff door",
            "category": "opening",
            "position_hint": "north wall, right side, connecting sales floor to stock access",
            "base_layer_decision": "base_opening",
            "render_role": "not_applicable",
            "top_down_legibility": "not_applicable"
          },
          {
            "number": 8,
            "label": "checkout counters",
            "category": "furniture",
            "position_hint": "southwest quadrant, angled toward the entry and main circulation",
            "base_layer_decision": "base_persistent_fixture",
            "render_role": "not_applicable",
            "top_down_legibility": "not_applicable"
          },
          {
            "number": 9,
            "label": "central parallel aisle shelves",
            "category": "furniture",
            "position_hint": "center of sales floor, three long north-south shelf rows with walking aisles between them",
            "base_layer_decision": "base_persistent_furniture",
            "render_role": "not_applicable",
            "top_down_legibility": "not_applicable"
          },
          {
            "number": 10,
            "label": "left wall display shelves",
            "category": "furniture",
            "position_hint": "west wall, running north-south along the main sales floor",
            "base_layer_decision": "base_persistent_furniture",
            "render_role": "not_applicable",
            "top_down_legibility": "not_applicable"
          },
          {
            "number": 11,
            "label": "right wall display shelves",
            "category": "furniture",
            "position_hint": "east wall, running north-south opposite the left wall displays",
            "base_layer_decision": "base_persistent_furniture",
            "render_role": "not_applicable",
            "top_down_legibility": "not_applicable"
          },
          {
            "number": 12,
            "label": "back wall refrigerated cases",
            "category": "prop",
            "position_hint": "north wall across the rear of the main sales floor",
            "base_layer_decision": "base_persistent_fixture",
            "render_role": "not_applicable",
            "top_down_legibility": "not_applicable"
          },
          {
            "number": 13,
            "label": "side refrigerated cases",
            "category": "prop",
            "position_hint": "east side near the rear, perpendicular to the back wall cases",
            "base_layer_decision": "base_persistent_fixture",
            "render_role": "not_applicable",
            "top_down_legibility": "not_applicable"
          },
          {
            "number": 14,
            "label": "produce display tables",
            "category": "furniture",
            "position_hint": "front-center of main sales floor between entry threshold and central aisles",
            "base_layer_decision": "base_persistent_furniture",
            "render_role": "not_applicable",
            "top_down_legibility": "not_applicable"
          },
          {
            "number": 15,
            "label": "promotional display bin",
            "category": "furniture",
            "position_hint": "near the checkout-facing circulation, slightly east of checkout counters",
            "base_layer_decision": "base_persistent_furniture",
            "render_role": "not_applicable",
            "top_down_legibility": "not_applicable"
          },
          {
            "number": 16,
            "label": "ceiling CCTV dome position",
            "category": "prop",
            "position_hint": "shown as a small fixed symbol near the front-center ceiling coverage point above the entry and checkout circulation",
            "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,
          4
        ],
        "dominant_target_unit_marker_number": null,
        "clean_background_expected": true,
        "diagnostics": [
          "multiple base_structural_unit markers in use_numbered_elements ([1, 2, 3, 4]); dominant_target_unit_marker_number left empty (W19B-1 lock — no lexical disambiguation)"
        ]
      },
      "L10B01": {
        "bg_id": "L10B01",
        "fp_id": "fp_mart_exterior_front",
        "use_numbered_elements": [
          1,
          2,
          3,
          4,
          5,
          6,
          7,
          8,
          9,
          11,
          12,
          13,
          14
        ],
        "ignore_numbered_elements": [],
        "base_markers_to_reference": [
          {
            "number": 1,
            "label": "Street approach and curb lane",
            "category": "area",
            "position_hint": "south edge of plan, running east-west in front of the mart frontage",
            "base_layer_decision": "base_structural_unit",
            "render_role": "not_applicable",
            "top_down_legibility": "not_applicable"
          },
          {
            "number": 2,
            "label": "Front sidewalk threshold apron",
            "category": "area",
            "position_hint": "middle band between street approach and storefront wall",
            "base_layer_decision": "base_structural_unit",
            "render_role": "not_applicable",
            "top_down_legibility": "not_applicable"
          },
          {
            "number": 3,
            "label": "Storefront shared entry zone",
            "category": "area",
            "position_hint": "north central building footprint immediately behind the main entrance",
            "base_layer_decision": "base_structural_unit",
            "render_role": "not_applicable",
            "top_down_legibility": "not_applicable"
          },
          {
            "number": 4,
            "label": "Exterior front wall line",
            "category": "area",
            "position_hint": "north side facade boundary facing the sidewalk",
            "base_layer_decision": "base_structural_unit",
            "render_role": "not_applicable",
            "top_down_legibility": "not_applicable"
          },
          {
            "number": 5,
            "label": "Automatic sliding glass entrance",
            "category": "opening",
            "position_hint": "center of the exterior front wall, opening from sidewalk threshold into the store",
            "base_layer_decision": "base_opening",
            "render_role": "not_applicable",
            "top_down_legibility": "not_applicable"
          },
          {
            "number": 6,
            "label": "Left display window",
            "category": "opening",
            "position_hint": "front wall west of the sliding entrance",
            "base_layer_decision": "base_opening",
            "render_role": "not_applicable",
            "top_down_legibility": "not_applicable"
          },
          {
            "number": 7,
            "label": "Right display window",
            "category": "opening",
            "position_hint": "front wall east of the sliding entrance",
            "base_layer_decision": "base_opening",
            "render_role": "not_applicable",
            "top_down_legibility": "not_applicable"
          },
          {
            "number": 8,
            "label": "Fixed bicycle parking rack",
            "category": "prop",
            "position_hint": "southwest portion of the sidewalk threshold near the curb but outside the entrance path",
            "base_layer_decision": "base_persistent_fixture",
            "render_role": "not_applicable",
            "top_down_legibility": "not_applicable"
          },
          {
            "number": 9,
            "label": "Wall-mounted CCTV camera fixture",
            "category": "prop",
            "position_hint": "upper right portion of the exterior front wall, angled diagonally across the frontage",
            "base_layer_decision": "base_persistent_fixture",
            "render_role": "not_applicable",
            "top_down_legibility": "not_applicable"
          },
          {
            "number": 11,
            "label": "Side utility strip",
            "category": "area",
            "position_hint": "east edge of plan beside the storefront, narrow exterior service passage",
            "base_layer_decision": "base_structural_unit",
            "render_role": "not_applicable",
            "top_down_legibility": "not_applicable"
          },
          {
            "number": 12,
            "label": "Blank overhead facade signboard",
            "category": "prop",
            "position_hint": "above the front wall and centered over the entrance and display windows",
            "base_layer_decision": "base_persistent_fixture",
            "render_role": "not_applicable",
            "top_down_legibility": "not_applicable"
          },
          {
            "number": 13,
            "label": "Curb cut crossing",
            "category": "opening",
            "position_hint": "south central break between street approach and sidewalk threshold aligned with the entrance",
            "base_layer_decision": "base_opening",
            "render_role": "not_applicable",
            "top_down_legibility": "not_applicable"
          }
        ],
        "transient_markers_to_describe": [
          {
            "number": 14,
            "label": "Temporarily parked bicycle",
            "category": "prop",
            "position_hint": "leaning or locked at the fixed bicycle rack during the early morning arrival moment",
            "base_layer_decision": "state_overlay_transient_object",
            "render_role": "not_applicable",
            "top_down_legibility": "not_applicable"
          }
        ],
        "ignored_state_overlay_markers": [],
        "target_unit_marker_numbers": [
          1,
          2,
          3,
          4,
          11
        ],
        "dominant_target_unit_marker_number": null,
        "clean_background_expected": false,
        "diagnostics": [
          "multiple base_structural_unit markers in use_numbered_elements ([1, 2, 3, 4, 11]); dominant_target_unit_marker_number left empty (W19B-1 lock — no lexical disambiguation)"
        ]
      },
      "L10B02": {
        "bg_id": "L10B02",
        "fp_id": "fp_mart_exterior_front",
        "use_numbered_elements": [
          1,
          2,
          3,
          4,
          5,
          6,
          7,
          8,
          9,
          10,
          11,
          12,
          13
        ],
        "ignore_numbered_elements": [
          14
        ],
        "base_markers_to_reference": [
          {
            "number": 1,
            "label": "Street approach and curb lane",
            "category": "area",
            "position_hint": "south edge of plan, running east-west in front of the mart frontage",
            "base_layer_decision": "base_structural_unit",
            "render_role": "not_applicable",
            "top_down_legibility": "not_applicable"
          },
          {
            "number": 2,
            "label": "Front sidewalk threshold apron",
            "category": "area",
            "position_hint": "middle band between street approach and storefront wall",
            "base_layer_decision": "base_structural_unit",
            "render_role": "not_applicable",
            "top_down_legibility": "not_applicable"
          },
          {
            "number": 3,
            "label": "Storefront shared entry zone",
            "category": "area",
            "position_hint": "north central building footprint immediately behind the main entrance",
            "base_layer_decision": "base_structural_unit",
            "render_role": "not_applicable",
            "top_down_legibility": "not_applicable"
          },
          {
            "number": 4,
            "label": "Exterior front wall line",
            "category": "area",
            "position_hint": "north side facade boundary facing the sidewalk",
            "base_layer_decision": "base_structural_unit",
            "render_role": "not_applicable",
            "top_down_legibility": "not_applicable"
          },
          {
            "number": 5,
            "label": "Automatic sliding glass entrance",
            "category": "opening",
            "position_hint": "center of the exterior front wall, opening from sidewalk threshold into the store",
            "base_layer_decision": "base_opening",
            "render_role": "not_applicable",
            "top_down_legibility": "not_applicable"
          },
          {
            "number": 6,
            "label": "Left display window",
            "category": "opening",
            "position_hint": "front wall west of the sliding entrance",
            "base_layer_decision": "base_opening",
            "render_role": "not_applicable",
            "top_down_legibility": "not_applicable"
          },
          {
            "number": 7,
            "label": "Right display window",
            "category": "opening",
            "position_hint": "front wall east of the sliding entrance",
            "base_layer_decision": "base_opening",
            "render_role": "not_applicable",
            "top_down_legibility": "not_applicable"
          },
          {
            "number": 8,
            "label": "Fixed bicycle parking rack",
            "category": "prop",
            "position_hint": "southwest portion of the sidewalk threshold near the curb but outside the entrance path",
            "base_layer_decision": "base_persistent_fixture",
            "render_role": "not_applicable",
            "top_down_legibility": "not_applicable"
          },
          {
            "number": 9,
            "label": "Wall-mounted CCTV camera fixture",
            "category": "prop",
            "position_hint": "upper right portion of the exterior front wall, angled diagonally across the frontage",
            "base_layer_decision": "base_persistent_fixture",
            "render_role": "not_applicable",
            "top_down_legibility": "not_applicable"
          },
          {
            "number": 10,
            "label": "CCTV coverage sightline zone",
            "category": "area",
            "position_hint": "flat diagonal wedge extending from the CCTV fixture toward the bicycle rack, sidewalk, and street approach",
            "base_layer_decision": "base_structural_unit",
            "render_role": "not_applicable",
            "top_down_legibility": "not_applicable"
          },
          {
            "number": 11,
            "label": "Side utility strip",
            "category": "area",
            "position_hint": "east edge of plan beside the storefront, narrow exterior service passage",
            "base_layer_decision": "base_structural_unit",
            "render_role": "not_applicable",
            "top_down_legibility": "not_applicable"
          },
          {
            "number": 12,
            "label": "Blank overhead facade signboard",
            "category": "prop",
            "position_hint": "above the front wall and centered over the entrance and display windows",
            "base_layer_decision": "base_persistent_fixture",
            "render_role": "not_applicable",
            "top_down_legibility": "not_applicable"
          },
          {
            "number": 13,
            "label": "Curb cut crossing",
            "category": "opening",
            "position_hint": "south central break between street approach and sidewalk threshold aligned with the entrance",
            "base_layer_decision": "base_opening",
            "render_role": "not_applicable",
            "top_down_legibility": "not_applicable"
          }
        ],
        "transient_markers_to_describe": [],
        "ignored_state_overlay_markers": [
          {
            "number": 14,
            "label": "Temporarily parked bicycle",
            "category": "prop",
            "position_hint": "leaning or locked at the fixed bicycle rack during the early morning arrival moment",
            "base_layer_decision": "state_overlay_transient_object",
            "render_role": "not_applicable",
            "top_down_legibility": "not_applicable"
          }
        ],
        "target_unit_marker_numbers": [
          1,
          2,
          3,
          4,
          10,
          11
        ],
        "dominant_target_unit_marker_number": null,
        "clean_background_expected": true,
        "diagnostics": [
          "multiple base_structural_unit markers in use_numbered_elements ([1, 2, 3, 4, 10, 11]); dominant_target_unit_marker_number left empty (W19B-1 lock — no lexical disambiguation)"
        ]
      },
      "L16B01": {
        "bg_id": "L16B01",
        "fp_id": "fp_mart_security_office",
        "use_numbered_elements": [
          1,
          2,
          3,
          4,
          5,
          6,
          7,
          8,
          9,
          10,
          11,
          12
        ],
        "ignore_numbered_elements": [],
        "base_markers_to_reference": [
          {
            "number": 1,
            "label": "security office room boundary",
            "category": "area",
            "position_hint": "overall rectangular room perimeter",
            "base_layer_decision": "base_structural_unit",
            "render_role": "not_applicable",
            "top_down_legibility": "not_applicable"
          },
          {
            "number": 2,
            "label": "threshold zone",
            "category": "area",
            "position_hint": "south side immediately inside the entrance door",
            "base_layer_decision": "base_structural_unit",
            "render_role": "not_applicable",
            "top_down_legibility": "not_applicable"
          },
          {
            "number": 3,
            "label": "monitor control zone",
            "category": "area",
            "position_hint": "north wall zone in front of the CCTV monitors",
            "base_layer_decision": "base_structural_unit",
            "render_role": "not_applicable",
            "top_down_legibility": "not_applicable"
          },
          {
            "number": 4,
            "label": "desk review zone",
            "category": "area",
            "position_hint": "central shared zone around the security desk",
            "base_layer_decision": "base_structural_unit",
            "render_role": "not_applicable",
            "top_down_legibility": "not_applicable"
          },
          {
            "number": 5,
            "label": "rear standing space",
            "category": "area",
            "position_hint": "south-central open floor behind the chairs",
            "base_layer_decision": "base_structural_unit",
            "render_role": "not_applicable",
            "top_down_legibility": "not_applicable"
          },
          {
            "number": 6,
            "label": "security desk",
            "category": "furniture",
            "position_hint": "center-north of the room, oriented toward the north wall",
            "base_layer_decision": "base_persistent_furniture",
            "render_role": "not_applicable",
            "top_down_legibility": "not_applicable"
          },
          {
            "number": 7,
            "label": "CCTV monitor bank",
            "category": "prop",
            "position_hint": "north wall above or behind the security desk",
            "base_layer_decision": "base_persistent_fixture",
            "render_role": "not_applicable",
            "top_down_legibility": "not_applicable"
          },
          {
            "number": 8,
            "label": "operator chair",
            "category": "furniture",
            "position_hint": "behind the desk, facing north toward the monitors",
            "base_layer_decision": "base_persistent_furniture",
            "render_role": "not_applicable",
            "top_down_legibility": "not_applicable"
          },
          {
            "number": 9,
            "label": "visitor review chairs",
            "category": "furniture",
            "position_hint": "south side of the desk, facing north toward the monitors",
            "base_layer_decision": "base_persistent_furniture",
            "render_role": "not_applicable",
            "top_down_legibility": "not_applicable"
          },
          {
            "number": 10,
            "label": "entrance door",
            "category": "opening",
            "position_hint": "south wall, slightly west of center, opening inward from corridor",
            "base_layer_decision": "base_opening",
            "render_role": "not_applicable",
            "top_down_legibility": "not_applicable"
          },
          {
            "number": 11,
            "label": "small office window",
            "category": "opening",
            "position_hint": "east wall, upper half of the room",
            "base_layer_decision": "base_opening",
            "render_role": "not_applicable",
            "top_down_legibility": "not_applicable"
          }
        ],
        "transient_markers_to_describe": [
          {
            "number": 12,
            "label": "dark unclear CCTV replay on monitors",
            "category": "prop",
            "position_hint": "inside the monitor bank screens during the review moment only",
            "base_layer_decision": "state_overlay_plot_cue",
            "render_role": "not_applicable",
            "top_down_legibility": "not_applicable"
          }
        ],
        "ignored_state_overlay_markers": [],
        "target_unit_marker_numbers": [
          1,
          2,
          3,
          4,
          5
        ],
        "dominant_target_unit_marker_number": null,
        "clean_background_expected": false,
        "diagnostics": [
          "multiple base_structural_unit markers in use_numbered_elements ([1, 2, 3, 4, 5]); dominant_target_unit_marker_number left empty (W19B-1 lock — no lexical disambiguation)"
        ]
      },
      "L13B02": {
        "bg_id": "L13B02",
        "fp_id": "fp_police_station_office",
        "use_numbered_elements": [
          1,
          2,
          3,
          4,
          5,
          6,
          7,
          8,
          9,
          10,
          11,
          12,
          13,
          14
        ],
        "ignore_numbered_elements": [
          15,
          16,
          17
        ],
        "base_markers_to_reference": [
          {
            "number": 1,
            "label": "shared duty workspace",
            "category": "area",
            "position_hint": "central open office area",
            "base_layer_decision": "base_structural_unit",
            "render_role": "not_applicable",
            "top_down_legibility": "not_applicable"
          },
          {
            "number": 2,
            "label": "entrance threshold zone",
            "category": "area",
            "position_hint": "south side just inside main office door",
            "base_layer_decision": "base_structural_unit",
            "render_role": "not_applicable",
            "top_down_legibility": "not_applicable"
          },
          {
            "number": 3,
            "label": "private investigator desk bay",
            "category": "area",
            "position_hint": "east side of office beside exterior windows",
            "base_layer_decision": "base_structural_unit",
            "render_role": "not_applicable",
            "top_down_legibility": "not_applicable"
          },
          {
            "number": 4,
            "label": "evidence and records support zone",
            "category": "area",
            "position_hint": "west side of office along filing and evidence surfaces",
            "base_layer_decision": "base_structural_unit",
            "render_role": "not_applicable",
            "top_down_legibility": "not_applicable"
          },
          {
            "number": 5,
            "label": "main office door",
            "category": "opening",
            "position_hint": "south wall opening from corridor, hinged swing into threshold zone",
            "base_layer_decision": "base_opening",
            "render_role": "not_applicable",
            "top_down_legibility": "not_applicable"
          },
          {
            "number": 6,
            "label": "corridor glass panel",
            "category": "opening",
            "position_hint": "south wall beside main office door",
            "base_layer_decision": "base_opening",
            "render_role": "not_applicable",
            "top_down_legibility": "not_applicable"
          },
          {
            "number": 7,
            "label": "exterior window band",
            "category": "opening",
            "position_hint": "north and east outer walls near desk bay",
            "base_layer_decision": "base_opening",
            "render_role": "not_applicable",
            "top_down_legibility": "not_applicable"
          },
          {
            "number": 8,
            "label": "main investigator desk",
            "category": "furniture",
            "position_hint": "east desk bay, rectangular desk facing inward with visitor chair",
            "base_layer_decision": "base_persistent_furniture",
            "render_role": "not_applicable",
            "top_down_legibility": "not_applicable"
          },
          {
            "number": 9,
            "label": "duty desk",
            "category": "furniture",
            "position_hint": "north-central shared workspace, facing the entrance",
            "base_layer_decision": "base_persistent_furniture",
            "render_role": "not_applicable",
            "top_down_legibility": "not_applicable"
          },
          {
            "number": 10,
            "label": "duty desktop monitor",
            "category": "prop",
            "position_hint": "on duty desk, screen side facing south-west into the room",
            "base_layer_decision": "base_persistent_fixture",
            "render_role": "not_applicable",
            "top_down_legibility": "not_applicable"
          },
          {
            "number": 11,
            "label": "evidence review desk",
            "category": "furniture",
            "position_hint": "west support zone, long rectangular table against side wall",
            "base_layer_decision": "base_persistent_furniture",
            "render_role": "not_applicable",
            "top_down_legibility": "not_applicable"
          },
          {
            "number": 12,
            "label": "filing cabinet wall",
            "category": "prop",
            "position_hint": "west and north-west wall line, built-in record storage blocks",
            "base_layer_decision": "base_persistent_fixture",
            "render_role": "not_applicable",
            "top_down_legibility": "not_applicable"
          },
          {
            "number": 13,
            "label": "small meeting table",
            "category": "furniture",
            "position_hint": "south-west shared area near entrance threshold",
            "base_layer_decision": "base_persistent_furniture",
            "render_role": "not_applicable",
            "top_down_legibility": "not_applicable"
          },
          {
            "number": 14,
            "label": "coffee station",
            "category": "prop",
            "position_hint": "south-east service corner near private desk bay",
            "base_layer_decision": "base_persistent_fixture",
            "render_role": "not_applicable",
            "top_down_legibility": "not_applicable"
          }
        ],
        "transient_markers_to_describe": [],
        "ignored_state_overlay_markers": [
          {
            "number": 15,
            "label": "case photo spread on main desk",
            "category": "prop",
            "position_hint": "temporarily scattered across the top of the main investigator desk",
            "base_layer_decision": "state_overlay_plot_cue",
            "render_role": "not_applicable",
            "top_down_legibility": "not_applicable"
          },
          {
            "number": 16,
            "label": "phone tracking popup on duty monitor",
            "category": "prop",
            "position_hint": "temporary screen content on the duty desktop monitor",
            "base_layer_decision": "state_overlay_plot_cue",
            "render_role": "not_applicable",
            "top_down_legibility": "not_applicable"
          },
          {
            "number": 17,
            "label": "temporary note paper and pen",
            "category": "prop",
            "position_hint": "loose note-taking items near the duty desk and monitor",
            "base_layer_decision": "state_overlay_transient_object",
            "render_role": "not_applicable",
            "top_down_legibility": "not_applicable"
          }
        ],
        "target_unit_marker_numbers": [
          1,
          2,
          3,
          4
        ],
        "dominant_target_unit_marker_number": null,
        "clean_background_expected": true,
        "diagnostics": [
          "multiple base_structural_unit markers in use_numbered_elements ([1, 2, 3, 4]); dominant_target_unit_marker_number left empty (W19B-1 lock — no lexical disambiguation)"
        ]
      },
      "L13B01": {
        "bg_id": "L13B01",
        "fp_id": "fp_police_station_office",
        "use_numbered_elements": [
          1,
          2,
          3,
          4,
          5,
          6,
          7,
          8,
          9,
          10,
          11,
          12,
          13,
          14,
          15,
          16,
          17
        ],
        "ignore_numbered_elements": [],
        "base_markers_to_reference": [
          {
            "number": 1,
            "label": "shared duty workspace",
            "category": "area",
            "position_hint": "central open office area",
            "base_layer_decision": "base_structural_unit",
            "render_role": "not_applicable",
            "top_down_legibility": "not_applicable"
          },
          {
            "number": 2,
            "label": "entrance threshold zone",
            "category": "area",
            "position_hint": "south side just inside main office door",
            "base_layer_decision": "base_structural_unit",
            "render_role": "not_applicable",
            "top_down_legibility": "not_applicable"
          },
          {
            "number": 3,
            "label": "private investigator desk bay",
            "category": "area",
            "position_hint": "east side of office beside exterior windows",
            "base_layer_decision": "base_structural_unit",
            "render_role": "not_applicable",
            "top_down_legibility": "not_applicable"
          },
          {
            "number": 4,
            "label": "evidence and records support zone",
            "category": "area",
            "position_hint": "west side of office along filing and evidence surfaces",
            "base_layer_decision": "base_structural_unit",
            "render_role": "not_applicable",
            "top_down_legibility": "not_applicable"
          },
          {
            "number": 5,
            "label": "main office door",
            "category": "opening",
            "position_hint": "south wall opening from corridor, hinged swing into threshold zone",
            "base_layer_decision": "base_opening",
            "render_role": "not_applicable",
            "top_down_legibility": "not_applicable"
          },
          {
            "number": 6,
            "label": "corridor glass panel",
            "category": "opening",
            "position_hint": "south wall beside main office door",
            "base_layer_decision": "base_opening",
            "render_role": "not_applicable",
            "top_down_legibility": "not_applicable"
          },
          {
            "number": 7,
            "label": "exterior window band",
            "category": "opening",
            "position_hint": "north and east outer walls near desk bay",
            "base_layer_decision": "base_opening",
            "render_role": "not_applicable",
            "top_down_legibility": "not_applicable"
          },
          {
            "number": 8,
            "label": "main investigator desk",
            "category": "furniture",
            "position_hint": "east desk bay, rectangular desk facing inward with visitor chair",
            "base_layer_decision": "base_persistent_furniture",
            "render_role": "not_applicable",
            "top_down_legibility": "not_applicable"
          },
          {
            "number": 9,
            "label": "duty desk",
            "category": "furniture",
            "position_hint": "north-central shared workspace, facing the entrance",
            "base_layer_decision": "base_persistent_furniture",
            "render_role": "not_applicable",
            "top_down_legibility": "not_applicable"
          },
          {
            "number": 10,
            "label": "duty desktop monitor",
            "category": "prop",
            "position_hint": "on duty desk, screen side facing south-west into the room",
            "base_layer_decision": "base_persistent_fixture",
            "render_role": "not_applicable",
            "top_down_legibility": "not_applicable"
          },
          {
            "number": 11,
            "label": "evidence review desk",
            "category": "furniture",
            "position_hint": "west support zone, long rectangular table against side wall",
            "base_layer_decision": "base_persistent_furniture",
            "render_role": "not_applicable",
            "top_down_legibility": "not_applicable"
          },
          {
            "number": 12,
            "label": "filing cabinet wall",
            "category": "prop",
            "position_hint": "west and north-west wall line, built-in record storage blocks",
            "base_layer_decision": "base_persistent_fixture",
            "render_role": "not_applicable",
            "top_down_legibility": "not_applicable"
          },
          {
            "number": 13,
            "label": "small meeting table",
            "category": "furniture",
            "position_hint": "south-west shared area near entrance threshold",
            "base_layer_decision": "base_persistent_furniture",
            "render_role": "not_applicable",
            "top_down_legibility": "not_applicable"
          },
          {
            "number": 14,
            "label": "coffee station",
            "category": "prop",
            "position_hint": "south-east service corner near private desk bay",
            "base_layer_decision": "base_persistent_fixture",
            "render_role": "not_applicable",
            "top_down_legibility": "not_applicable"
          }
        ],
        "transient_markers_to_describe": [
          {
            "number": 15,
            "label": "case photo spread on main desk",
            "category": "prop",
            "position_hint": "temporarily scattered across the top of the main investigator desk",
            "base_layer_decision": "state_overlay_plot_cue",
            "render_role": "not_applicable",
            "top_down_legibility": "not_applicable"
          },
          {
            "number": 16,
            "label": "phone tracking popup on duty monitor",
            "category": "prop",
            "position_hint": "temporary screen content on the duty desktop monitor",
            "base_layer_decision": "state_overlay_plot_cue",
            "render_role": "not_applicable",
            "top_down_legibility": "not_applicable"
          },
          {
            "number": 17,
            "label": "temporary note paper and pen",
            "category": "prop",
            "position_hint": "loose note-taking items near the duty desk and monitor",
            "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)"
        ]
      },
      "L18B01": {
        "bg_id": "L18B01",
        "fp_id": "fp_fishing_boat_deck",
        "use_numbered_elements": [
          1,
          2,
          3,
          4,
          5,
          6,
          7,
          8,
          9,
          10,
          11,
          12,
          13,
          14,
          15,
          16
        ],
        "ignore_numbered_elements": [],
        "base_markers_to_reference": [
          {
            "number": 1,
            "label": "main open working deck",
            "category": "area",
            "position_hint": "central and aft portion of the hull, largest pale yellow shared zone",
            "base_layer_decision": "base_structural_unit",
            "render_role": "not_applicable",
            "top_down_legibility": "not_applicable"
          },
          {
            "number": 2,
            "label": "wheelhouse cabin block",
            "category": "area",
            "position_hint": "forward section of the hull, slightly to starboard, pale cyan service zone",
            "base_layer_decision": "base_structural_unit",
            "render_role": "not_applicable",
            "top_down_legibility": "not_applicable"
          },
          {
            "number": 3,
            "label": "bow foredeck threshold",
            "category": "area",
            "position_hint": "north pointed bow area ahead of the wheelhouse, pale beige threshold zone",
            "base_layer_decision": "base_structural_unit",
            "render_role": "not_applicable",
            "top_down_legibility": "not_applicable"
          },
          {
            "number": 4,
            "label": "surrounding sea exterior buffer",
            "category": "area",
            "position_hint": "outside the boat hull outline on all sides, pale gray utility/exterior zone",
            "base_layer_decision": "base_structural_unit",
            "render_role": "not_applicable",
            "top_down_legibility": "not_applicable"
          },
          {
            "number": 5,
            "label": "port low bulwark railing",
            "category": "prop",
            "position_hint": "continuous left side of the hull along the open deck",
            "base_layer_decision": "base_persistent_fixture",
            "render_role": "not_applicable",
            "top_down_legibility": "not_applicable"
          },
          {
            "number": 6,
            "label": "starboard low bulwark railing",
            "category": "prop",
            "position_hint": "continuous right side of the hull along the open deck",
            "base_layer_decision": "base_persistent_fixture",
            "render_role": "not_applicable",
            "top_down_legibility": "not_applicable"
          },
          {
            "number": 7,
            "label": "wheelhouse aft door",
            "category": "opening",
            "position_hint": "south wall of the wheelhouse, opening from deck into cabin",
            "base_layer_decision": "base_opening",
            "render_role": "not_applicable",
            "top_down_legibility": "not_applicable"
          },
          {
            "number": 8,
            "label": "wheelhouse front window band",
            "category": "opening",
            "position_hint": "north wall of the wheelhouse facing the bow",
            "base_layer_decision": "base_opening",
            "render_role": "not_applicable",
            "top_down_legibility": "not_applicable"
          },
          {
            "number": 9,
            "label": "wheelhouse side window",
            "category": "opening",
            "position_hint": "starboard wall of the wheelhouse",
            "base_layer_decision": "base_opening",
            "render_role": "not_applicable",
            "top_down_legibility": "not_applicable"
          },
          {
            "number": 10,
            "label": "rectangular deck hatch",
            "category": "prop",
            "position_hint": "center of the open working deck",
            "base_layer_decision": "base_persistent_fixture",
            "render_role": "not_applicable",
            "top_down_legibility": "not_applicable"
          },
          {
            "number": 11,
            "label": "fixed low bench seat",
            "category": "furniture",
            "position_hint": "port side of the open deck, suitable for a seated figure",
            "base_layer_decision": "base_persistent_furniture",
            "render_role": "not_applicable",
            "top_down_legibility": "not_applicable"
          },
          {
            "number": 12,
            "label": "small net winch or roller",
            "category": "prop",
            "position_hint": "aft-starboard corner of the working deck",
            "base_layer_decision": "base_persistent_fixture",
            "render_role": "not_applicable",
            "top_down_legibility": "not_applicable"
          },
          {
            "number": 13,
            "label": "stern work rail and transom edge",
            "category": "prop",
            "position_hint": "south end of the hull at the stern",
            "base_layer_decision": "base_persistent_fixture",
            "render_role": "not_applicable",
            "top_down_legibility": "not_applicable"
          },
          {
            "number": 14,
            "label": "bow mooring cleat or anchor roller",
            "category": "prop",
            "position_hint": "tip of the bow foredeck",
            "base_layer_decision": "base_persistent_fixture",
            "render_role": "not_applicable",
            "top_down_legibility": "not_applicable"
          }
        ],
        "transient_markers_to_describe": [
          {
            "number": 15,
            "label": "unfolded paper map",
            "category": "prop",
            "position_hint": "temporarily held or exchanged over the open deck near the bench",
            "base_layer_decision": "state_overlay_transient_object",
            "render_role": "not_applicable",
            "top_down_legibility": "not_applicable"
          },
          {
            "number": 16,
            "label": "printed photograph",
            "category": "prop",
            "position_hint": "temporarily shown near the map exchange on the open deck",
            "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)"
        ]
      },
      "L19B02": {
        "bg_id": "L19B02",
        "fp_id": "fp_wheelhouse",
        "use_numbered_elements": [
          1,
          2,
          3,
          4,
          5,
          6,
          7,
          8,
          9,
          10,
          11,
          12,
          13,
          14
        ],
        "ignore_numbered_elements": [
          15,
          16,
          17
        ],
        "base_markers_to_reference": [
          {
            "number": 1,
            "label": "enclosed wheelhouse cabin",
            "category": "area",
            "position_hint": "central rectangular cabin shell with visible interior wall outline",
            "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 third of cabin beneath bow-facing windshield",
            "base_layer_decision": "base_structural_unit",
            "render_role": "not_applicable",
            "top_down_legibility": "not_applicable"
          },
          {
            "number": 3,
            "label": "aft entry threshold",
            "category": "area",
            "position_hint": "inside aft end of cabin near door from deck",
            "base_layer_decision": "base_structural_unit",
            "render_role": "not_applicable",
            "top_down_legibility": "not_applicable"
          },
          {
            "number": 4,
            "label": "aft hinged door",
            "category": "opening",
            "position_hint": "aft wall, slightly starboard, opening from exterior deck into wheelhouse",
            "base_layer_decision": "base_opening",
            "render_role": "not_applicable",
            "top_down_legibility": "not_applicable"
          },
          {
            "number": 5,
            "label": "forward windshield",
            "category": "opening",
            "position_hint": "long opening across forward bow wall above helm console",
            "base_layer_decision": "base_opening",
            "render_role": "not_applicable",
            "top_down_legibility": "not_applicable"
          },
          {
            "number": 6,
            "label": "port side window",
            "category": "opening",
            "position_hint": "left side wall, forward half of cabin",
            "base_layer_decision": "base_opening",
            "render_role": "not_applicable",
            "top_down_legibility": "not_applicable"
          },
          {
            "number": 7,
            "label": "starboard side window",
            "category": "opening",
            "position_hint": "right side wall, forward half of cabin",
            "base_layer_decision": "base_opening",
            "render_role": "not_applicable",
            "top_down_legibility": "not_applicable"
          },
          {
            "number": 8,
            "label": "helm console with wheel",
            "category": "prop",
            "position_hint": "forward interior, slightly starboard of center, directly below windshield",
            "base_layer_decision": "base_persistent_fixture",
            "render_role": "not_applicable",
            "top_down_legibility": "not_applicable"
          },
          {
            "number": 9,
            "label": "digital navigation display",
            "category": "prop",
            "position_hint": "mounted on top of helm console near forward wall",
            "base_layer_decision": "base_persistent_fixture",
            "render_role": "not_applicable",
            "top_down_legibility": "not_applicable"
          },
          {
            "number": 10,
            "label": "throttle and radio controls",
            "category": "prop",
            "position_hint": "starboard side of helm console within operator reach",
            "base_layer_decision": "base_persistent_fixture",
            "render_role": "not_applicable",
            "top_down_legibility": "not_applicable"
          },
          {
            "number": 11,
            "label": "narrow aft bench",
            "category": "furniture",
            "position_hint": "along aft port interior wall near entry threshold",
            "base_layer_decision": "base_persistent_furniture",
            "render_role": "not_applicable",
            "top_down_legibility": "not_applicable"
          },
          {
            "number": 12,
            "label": "chart shelf work table",
            "category": "furniture",
            "position_hint": "center-left of cabin between bench and helm zone",
            "base_layer_decision": "base_persistent_furniture",
            "render_role": "not_applicable",
            "top_down_legibility": "not_applicable"
          },
          {
            "number": 13,
            "label": "aft exterior deck strip",
            "category": "area",
            "position_hint": "outside aft door at bottom edge of plan, shown only as immediate threshold context",
            "base_layer_decision": "base_structural_unit",
            "render_role": "not_applicable",
            "top_down_legibility": "not_applicable"
          }
        ],
        "transient_markers_to_describe": [
          {
            "number": 14,
            "label": "held old photograph with indicated child",
            "category": "prop",
            "position_hint": "foreground hand-held cue near chart shelf and helm sightline; not fixed to the room",
            "base_layer_decision": "state_overlay_transient_object",
            "render_role": "not_applicable",
            "top_down_legibility": "not_applicable"
          }
        ],
        "ignored_state_overlay_markers": [
          {
            "number": 15,
            "label": "many circular wall marks",
            "category": "prop",
            "position_hint": "overlay on visible forward and side interior wall surfaces behind the helm area",
            "base_layer_decision": "state_overlay_plot_cue",
            "render_role": "not_applicable",
            "top_down_legibility": "not_applicable"
          },
          {
            "number": 16,
            "label": "single emphasized red circle mark",
            "category": "prop",
            "position_hint": "overlay among the circular wall marks on the forward interior wall near the windshield",
            "base_layer_decision": "state_overlay_plot_cue",
            "render_role": "not_applicable",
            "top_down_legibility": "not_applicable"
          },
          {
            "number": 17,
            "label": "collapse position cue",
            "category": "prop",
            "position_hint": "low foreground area near aft entry threshold and center aisle",
            "base_layer_decision": "state_overlay_plot_cue",
            "render_role": "not_applicable",
            "top_down_legibility": "not_applicable"
          }
        ],
        "target_unit_marker_numbers": [
          1,
          2,
          3,
          13
        ],
        "dominant_target_unit_marker_number": null,
        "clean_background_expected": false,
        "diagnostics": [
          "multiple base_structural_unit markers in use_numbered_elements ([1, 2, 3, 13]); dominant_target_unit_marker_number left empty (W19B-1 lock — no lexical disambiguation)"
        ]
      },
      "L19B01": {
        "bg_id": "L19B01",
        "fp_id": "fp_wheelhouse",
        "use_numbered_elements": [
          1,
          2,
          3,
          4,
          5,
          6,
          7,
          8,
          9,
          10,
          11,
          12,
          13,
          15,
          16,
          17
        ],
        "ignore_numbered_elements": [
          14
        ],
        "base_markers_to_reference": [
          {
            "number": 1,
            "label": "enclosed wheelhouse cabin",
            "category": "area",
            "position_hint": "central rectangular cabin shell with visible interior wall outline",
            "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 third of cabin beneath bow-facing windshield",
            "base_layer_decision": "base_structural_unit",
            "render_role": "not_applicable",
            "top_down_legibility": "not_applicable"
          },
          {
            "number": 3,
            "label": "aft entry threshold",
            "category": "area",
            "position_hint": "inside aft end of cabin near door from deck",
            "base_layer_decision": "base_structural_unit",
            "render_role": "not_applicable",
            "top_down_legibility": "not_applicable"
          },
          {
            "number": 4,
            "label": "aft hinged door",
            "category": "opening",
            "position_hint": "aft wall, slightly starboard, opening from exterior deck into wheelhouse",
            "base_layer_decision": "base_opening",
            "render_role": "not_applicable",
            "top_down_legibility": "not_applicable"
          },
          {
            "number": 5,
            "label": "forward windshield",
            "category": "opening",
            "position_hint": "long opening across forward bow wall above helm console",
            "base_layer_decision": "base_opening",
            "render_role": "not_applicable",
            "top_down_legibility": "not_applicable"
          },
          {
            "number": 6,
            "label": "port side window",
            "category": "opening",
            "position_hint": "left side wall, forward half of cabin",
            "base_layer_decision": "base_opening",
            "render_role": "not_applicable",
            "top_down_legibility": "not_applicable"
          },
          {
            "number": 7,
            "label": "starboard side window",
            "category": "opening",
            "position_hint": "right side wall, forward half of cabin",
            "base_layer_decision": "base_opening",
            "render_role": "not_applicable",
            "top_down_legibility": "not_applicable"
          },
          {
            "number": 8,
            "label": "helm console with wheel",
            "category": "prop",
            "position_hint": "forward interior, slightly starboard of center, directly below windshield",
            "base_layer_decision": "base_persistent_fixture",
            "render_role": "not_applicable",
            "top_down_legibility": "not_applicable"
          },
          {
            "number": 9,
            "label": "digital navigation display",
            "category": "prop",
            "position_hint": "mounted on top of helm console near forward wall",
            "base_layer_decision": "base_persistent_fixture",
            "render_role": "not_applicable",
            "top_down_legibility": "not_applicable"
          },
          {
            "number": 10,
            "label": "throttle and radio controls",
            "category": "prop",
            "position_hint": "starboard side of helm console within operator reach",
            "base_layer_decision": "base_persistent_fixture",
            "render_role": "not_applicable",
            "top_down_legibility": "not_applicable"
          },
          {
            "number": 11,
            "label": "narrow aft bench",
            "category": "furniture",
            "position_hint": "along aft port interior wall near entry threshold",
            "base_layer_decision": "base_persistent_furniture",
            "render_role": "not_applicable",
            "top_down_legibility": "not_applicable"
          },
          {
            "number": 12,
            "label": "chart shelf work table",
            "category": "furniture",
            "position_hint": "center-left of cabin between bench and helm zone",
            "base_layer_decision": "base_persistent_furniture",
            "render_role": "not_applicable",
            "top_down_legibility": "not_applicable"
          },
          {
            "number": 13,
            "label": "aft exterior deck strip",
            "category": "area",
            "position_hint": "outside aft door at bottom edge of plan, shown only as immediate threshold context",
            "base_layer_decision": "base_structural_unit",
            "render_role": "not_applicable",
            "top_down_legibility": "not_applicable"
          }
        ],
        "transient_markers_to_describe": [
          {
            "number": 15,
            "label": "many circular wall marks",
            "category": "prop",
            "position_hint": "overlay on visible forward and side interior wall surfaces behind the helm area",
            "base_layer_decision": "state_overlay_plot_cue",
            "render_role": "not_applicable",
            "top_down_legibility": "not_applicable"
          },
          {
            "number": 16,
            "label": "single emphasized red circle mark",
            "category": "prop",
            "position_hint": "overlay among the circular wall marks on the forward interior wall near the windshield",
            "base_layer_decision": "state_overlay_plot_cue",
            "render_role": "not_applicable",
            "top_down_legibility": "not_applicable"
          },
          {
            "number": 17,
            "label": "collapse position cue",
            "category": "prop",
            "position_hint": "low foreground area near aft entry threshold and center aisle",
            "base_layer_decision": "state_overlay_plot_cue",
            "render_role": "not_applicable",
            "top_down_legibility": "not_applicable"
          }
        ],
        "ignored_state_overlay_markers": [
          {
            "number": 14,
            "label": "held old photograph with indicated child",
            "category": "prop",
            "position_hint": "foreground hand-held cue near chart shelf and helm sightline; not fixed to the room",
            "base_layer_decision": "state_overlay_transient_object",
            "render_role": "not_applicable",
            "top_down_legibility": "not_applicable"
          }
        ],
        "target_unit_marker_numbers": [
          1,
          2,
          3,
          13
        ],
        "dominant_target_unit_marker_number": null,
        "clean_background_expected": false,
        "diagnostics": [
          "multiple base_structural_unit markers in use_numbered_elements ([1, 2, 3, 13]); dominant_target_unit_marker_number left empty (W19B-1 lock — no lexical disambiguation)"
        ]
      }
    }
  },
  "step_id": "floor_plan_overlay_payload",
  "run_id": "77b05cde-de4d-4bfd-aa52-a78b5200beeb",
  "resolved_model": "gpt",
  "updated_at": "2026-07-01T16:25:57.993392+00:00",
  "project_config_snapshot": {}
}