{
  "status": "completed",
  "applicable_count": 1,
  "completed_count": 1,
  "failed_count": 0,
  "schema_version": 1,
  "config_hash": "c55c2f78e54bc607",
  "data": {
    "overlays": {
      "L04B01": {
        "bg_id": "L04B01",
        "fp_id": "fp_l04_rooftop",
        "use_numbered_elements": [
          1,
          2,
          3,
          4,
          5,
          6,
          7,
          8,
          9
        ],
        "ignore_numbered_elements": [
          10,
          11,
          12,
          13,
          14
        ],
        "base_markers_to_reference": [
          {
            "number": 1,
            "label": "open rooftop deck area",
            "category": "area",
            "position_hint": "large central and west portion inside the parapet boundary",
            "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": "east side rectangular block facing the open deck",
            "base_layer_decision": "base_structural_unit",
            "render_role": "not_applicable",
            "top_down_legibility": "not_applicable"
          },
          {
            "number": 3,
            "label": "entrance threshold landing",
            "category": "area",
            "position_hint": "small pale beige zone directly outside the rooftop room entrance on the west-facing wall",
            "base_layer_decision": "base_structural_unit",
            "render_role": "not_applicable",
            "top_down_legibility": "not_applicable"
          },
          {
            "number": 4,
            "label": "water tank",
            "category": "prop",
            "position_hint": "northwest service corner of the rooftop deck on a small utility pad",
            "base_layer_decision": "base_persistent_fixture",
            "render_role": "not_applicable",
            "top_down_legibility": "not_applicable"
          },
          {
            "number": 5,
            "label": "clothesline assembly",
            "category": "prop",
            "position_hint": "north side laundry strip, running horizontally between two simple posts",
            "base_layer_decision": "base_persistent_fixture",
            "render_role": "not_applicable",
            "top_down_legibility": "not_applicable"
          },
          {
            "number": 6,
            "label": "low rectangular platform",
            "category": "furniture",
            "position_hint": "open deck near center-left, clear of the doorway path",
            "base_layer_decision": "base_persistent_furniture",
            "render_role": "not_applicable",
            "top_down_legibility": "not_applicable"
          },
          {
            "number": 7,
            "label": "old iron entrance door",
            "category": "opening",
            "position_hint": "west-facing wall of the rooftop room, opening onto the threshold landing",
            "base_layer_decision": "base_opening",
            "render_role": "not_applicable",
            "top_down_legibility": "not_applicable"
          },
          {
            "number": 8,
            "label": "small window on room face",
            "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": 9,
            "label": "roof stair access opening",
            "category": "opening",
            "position_hint": "southwest edge of the rooftop deck, connected to the roof access path",
            "base_layer_decision": "base_opening",
            "render_role": "not_applicable",
            "top_down_legibility": "not_applicable"
          }
        ],
        "transient_markers_to_describe": [],
        "ignored_state_overlay_markers": [
          {
            "number": 10,
            "label": "wind-scattered dried leaves",
            "category": "prop",
            "position_hint": "on and around the low platform, trailing toward the entrance path",
            "base_layer_decision": "state_overlay_transient_object",
            "render_role": "not_applicable",
            "top_down_legibility": "not_applicable"
          },
          {
            "number": 11,
            "label": "intruder shoes at doorway",
            "category": "prop",
            "position_hint": "on the threshold landing immediately outside the entrance door",
            "base_layer_decision": "state_overlay_transient_object",
            "render_role": "not_applicable",
            "top_down_legibility": "not_applicable"
          },
          {
            "number": 12,
            "label": "advertising flyer in door gap",
            "category": "prop",
            "position_hint": "caught at the entrance door seam on the threshold side",
            "base_layer_decision": "state_overlay_transient_object",
            "render_role": "not_applicable",
            "top_down_legibility": "not_applicable"
          },
          {
            "number": 13,
            "label": "long intruder silhouette across deck",
            "category": "prop",
            "position_hint": "stretching from the threshold area back across the open rooftop deck",
            "base_layer_decision": "state_overlay_plot_cue",
            "render_role": "not_applicable",
            "top_down_legibility": "not_applicable"
          },
          {
            "number": 14,
            "label": "ominous attack silhouette on window",
            "category": "prop",
            "position_hint": "on the small window surface of the rooftop room face",
            "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": true,
        "diagnostics": [
          "multiple base_structural_unit markers in use_numbered_elements ([1, 2, 3]); dominant_target_unit_marker_number left empty (W19B-1 lock — no lexical disambiguation)"
        ]
      },
      "L04B02": {
        "bg_id": "L04B02",
        "fp_id": "fp_l04_rooftop",
        "use_numbered_elements": [
          1,
          2,
          3,
          4,
          5,
          6,
          7,
          8,
          10,
          11,
          12,
          13,
          14
        ],
        "ignore_numbered_elements": [],
        "base_markers_to_reference": [
          {
            "number": 1,
            "label": "open rooftop deck area",
            "category": "area",
            "position_hint": "large central and west portion inside the parapet boundary",
            "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": "east side rectangular block facing the open deck",
            "base_layer_decision": "base_structural_unit",
            "render_role": "not_applicable",
            "top_down_legibility": "not_applicable"
          },
          {
            "number": 3,
            "label": "entrance threshold landing",
            "category": "area",
            "position_hint": "small pale beige zone directly outside the rooftop room entrance on the west-facing wall",
            "base_layer_decision": "base_structural_unit",
            "render_role": "not_applicable",
            "top_down_legibility": "not_applicable"
          },
          {
            "number": 4,
            "label": "water tank",
            "category": "prop",
            "position_hint": "northwest service corner of the rooftop deck on a small utility pad",
            "base_layer_decision": "base_persistent_fixture",
            "render_role": "not_applicable",
            "top_down_legibility": "not_applicable"
          },
          {
            "number": 5,
            "label": "clothesline assembly",
            "category": "prop",
            "position_hint": "north side laundry strip, running horizontally between two simple posts",
            "base_layer_decision": "base_persistent_fixture",
            "render_role": "not_applicable",
            "top_down_legibility": "not_applicable"
          },
          {
            "number": 6,
            "label": "low rectangular platform",
            "category": "furniture",
            "position_hint": "open deck near center-left, clear of the doorway path",
            "base_layer_decision": "base_persistent_furniture",
            "render_role": "not_applicable",
            "top_down_legibility": "not_applicable"
          },
          {
            "number": 7,
            "label": "old iron entrance door",
            "category": "opening",
            "position_hint": "west-facing wall of the rooftop room, opening onto the threshold landing",
            "base_layer_decision": "base_opening",
            "render_role": "not_applicable",
            "top_down_legibility": "not_applicable"
          },
          {
            "number": 8,
            "label": "small window on room face",
            "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"
          }
        ],
        "transient_markers_to_describe": [
          {
            "number": 10,
            "label": "wind-scattered dried leaves",
            "category": "prop",
            "position_hint": "on and around the low platform, trailing toward the entrance path",
            "base_layer_decision": "state_overlay_transient_object",
            "render_role": "not_applicable",
            "top_down_legibility": "not_applicable"
          },
          {
            "number": 11,
            "label": "intruder shoes at doorway",
            "category": "prop",
            "position_hint": "on the threshold landing immediately outside the entrance door",
            "base_layer_decision": "state_overlay_transient_object",
            "render_role": "not_applicable",
            "top_down_legibility": "not_applicable"
          },
          {
            "number": 12,
            "label": "advertising flyer in door gap",
            "category": "prop",
            "position_hint": "caught at the entrance door seam on the threshold side",
            "base_layer_decision": "state_overlay_transient_object",
            "render_role": "not_applicable",
            "top_down_legibility": "not_applicable"
          },
          {
            "number": 13,
            "label": "long intruder silhouette across deck",
            "category": "prop",
            "position_hint": "stretching from the threshold area back across the open rooftop deck",
            "base_layer_decision": "state_overlay_plot_cue",
            "render_role": "not_applicable",
            "top_down_legibility": "not_applicable"
          },
          {
            "number": 14,
            "label": "ominous attack silhouette on window",
            "category": "prop",
            "position_hint": "on the small window surface of the rooftop room face",
            "base_layer_decision": "state_overlay_plot_cue",
            "render_role": "not_applicable",
            "top_down_legibility": "not_applicable"
          }
        ],
        "ignored_state_overlay_markers": [],
        "target_unit_marker_numbers": [
          1,
          2,
          3
        ],
        "dominant_target_unit_marker_number": null,
        "clean_background_expected": false,
        "diagnostics": [
          "multiple base_structural_unit markers in use_numbered_elements ([1, 2, 3]); dominant_target_unit_marker_number left empty (W19B-1 lock — no lexical disambiguation)"
        ]
      },
      "L05B02": {
        "bg_id": "L05B02",
        "fp_id": "fp_l05_kitchen",
        "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": "kitchen alcove",
            "category": "area",
            "position_hint": "north side compact service zone adjoining the living area",
            "base_layer_decision": "base_structural_unit",
            "render_role": "not_applicable",
            "top_down_legibility": "not_applicable"
          },
          {
            "number": 2,
            "label": "adjoining living and dining area",
            "category": "area",
            "position_hint": "south and central shared zone connected directly to the kitchen alcove",
            "base_layer_decision": "base_structural_unit",
            "render_role": "not_applicable",
            "top_down_legibility": "not_applicable"
          },
          {
            "number": 3,
            "label": "open threshold to living area",
            "category": "opening",
            "position_hint": "wide open boundary between kitchen alcove and living-dining area",
            "base_layer_decision": "base_opening",
            "render_role": "not_applicable",
            "top_down_legibility": "not_applicable"
          },
          {
            "number": 4,
            "label": "sink basin and faucet",
            "category": "prop",
            "position_hint": "north wall of kitchen alcove, left side of counter run",
            "base_layer_decision": "base_persistent_fixture",
            "render_role": "not_applicable",
            "top_down_legibility": "not_applicable"
          },
          {
            "number": 5,
            "label": "linear counter and lower cabinets",
            "category": "prop",
            "position_hint": "north wall of kitchen alcove, continuous work surface under sink and cooktop",
            "base_layer_decision": "base_persistent_fixture",
            "render_role": "not_applicable",
            "top_down_legibility": "not_applicable"
          },
          {
            "number": 6,
            "label": "compact two-burner cooktop",
            "category": "prop",
            "position_hint": "north wall of kitchen alcove, right side of counter run",
            "base_layer_decision": "base_persistent_fixture",
            "render_role": "not_applicable",
            "top_down_legibility": "not_applicable"
          },
          {
            "number": 7,
            "label": "compact refrigerator niche",
            "category": "prop",
            "position_hint": "east end of kitchen alcove beside the counter run",
            "base_layer_decision": "base_persistent_fixture",
            "render_role": "not_applicable",
            "top_down_legibility": "not_applicable"
          },
          {
            "number": 8,
            "label": "small living area window",
            "category": "opening",
            "position_hint": "west wall of adjoining living area, near dining table",
            "base_layer_decision": "base_opening",
            "render_role": "not_applicable",
            "top_down_legibility": "not_applicable"
          },
          {
            "number": 9,
            "label": "small dining table",
            "category": "furniture",
            "position_hint": "living-dining area just south of the kitchen threshold",
            "base_layer_decision": "base_persistent_furniture",
            "render_role": "not_applicable",
            "top_down_legibility": "not_applicable"
          },
          {
            "number": 10,
            "label": "dining chair pair",
            "category": "furniture",
            "position_hint": "around number 9, one chair facing the kitchen and one toward the living area",
            "base_layer_decision": "base_persistent_furniture",
            "render_role": "not_applicable",
            "top_down_legibility": "not_applicable"
          },
          {
            "number": 11,
            "label": "TV set on low stand",
            "category": "furniture",
            "position_hint": "east wall of living area, angled toward dining table and kitchen alcove",
            "base_layer_decision": "base_persistent_furniture",
            "render_role": "not_applicable",
            "top_down_legibility": "not_applicable"
          },
          {
            "number": 12,
            "label": "main room passage edge",
            "category": "opening",
            "position_hint": "south edge of the living-dining area, indicating continuation to the rest of the rooftop room",
            "base_layer_decision": "base_opening",
            "render_role": "not_applicable",
            "top_down_legibility": "not_applicable"
          }
        ],
        "transient_markers_to_describe": [
          {
            "number": 13,
            "label": "half-washed herbs at sink",
            "category": "prop",
            "position_hint": "inside or beside number 4 on the sink counter",
            "base_layer_decision": "state_overlay_transient_object",
            "render_role": "not_applicable",
            "top_down_legibility": "not_applicable"
          },
          {
            "number": 14,
            "label": "running faucet water",
            "category": "prop",
            "position_hint": "at number 4, directly under the faucet",
            "base_layer_decision": "state_overlay_plot_cue",
            "render_role": "not_applicable",
            "top_down_legibility": "not_applicable"
          },
          {
            "number": 15,
            "label": "boiling pot on cooktop",
            "category": "prop",
            "position_hint": "on number 6, centered over one burner",
            "base_layer_decision": "state_overlay_transient_object",
            "render_role": "not_applicable",
            "top_down_legibility": "not_applicable"
          },
          {
            "number": 16,
            "label": "TV news broadcast on screen",
            "category": "prop",
            "position_hint": "on number 11, facing the dining table",
            "base_layer_decision": "state_overlay_plot_cue",
            "render_role": "not_applicable",
            "top_down_legibility": "not_applicable"
          }
        ],
        "ignored_state_overlay_markers": [],
        "target_unit_marker_numbers": [
          1,
          2
        ],
        "dominant_target_unit_marker_number": null,
        "clean_background_expected": false,
        "diagnostics": [
          "multiple base_structural_unit markers in use_numbered_elements ([1, 2]); dominant_target_unit_marker_number left empty (W19B-1 lock — no lexical disambiguation)"
        ]
      },
      "L05B03": {
        "bg_id": "L05B03",
        "fp_id": "fp_l05_main",
        "use_numbered_elements": [
          3,
          4,
          5,
          10,
          11,
          12,
          13,
          14,
          15,
          16,
          27
        ],
        "ignore_numbered_elements": [
          28,
          29,
          30,
          31,
          32,
          33,
          34,
          35,
          36,
          37,
          38,
          39,
          40,
          41,
          42
        ],
        "base_markers_to_reference": [
          {
            "number": 3,
            "label": "entry threshold",
            "category": "area",
            "position_hint": "small pale beige foyer just inside the entrance door",
            "base_layer_decision": "base_structural_unit",
            "render_role": "not_applicable",
            "top_down_legibility": "not_applicable"
          },
          {
            "number": 4,
            "label": "living-dining shared zone",
            "category": "area",
            "position_hint": "central-left main room, pale yellow shared zone",
            "base_layer_decision": "base_structural_unit",
            "render_role": "not_applicable",
            "top_down_legibility": "not_applicable"
          },
          {
            "number": 5,
            "label": "kitchen service strip",
            "category": "area",
            "position_hint": "west side of the shared room, pale peach service strip",
            "base_layer_decision": "base_structural_unit",
            "render_role": "not_applicable",
            "top_down_legibility": "not_applicable"
          },
          {
            "number": 10,
            "label": "small living window",
            "category": "opening",
            "position_hint": "north or west wall of the living-dining shared zone",
            "base_layer_decision": "base_opening",
            "render_role": "not_applicable",
            "top_down_legibility": "not_applicable"
          },
          {
            "number": 11,
            "label": "kitchen sink and faucet",
            "category": "prop",
            "position_hint": "west wall kitchen counter",
            "base_layer_decision": "base_persistent_fixture",
            "render_role": "not_applicable",
            "top_down_legibility": "not_applicable"
          },
          {
            "number": 12,
            "label": "stovetop and pot position",
            "category": "prop",
            "position_hint": "kitchen counter near the sink on the west side",
            "base_layer_decision": "base_persistent_fixture",
            "render_role": "not_applicable",
            "top_down_legibility": "not_applicable"
          },
          {
            "number": 13,
            "label": "dining table",
            "category": "furniture",
            "position_hint": "center of the living-dining shared zone",
            "base_layer_decision": "base_persistent_furniture",
            "render_role": "not_applicable",
            "top_down_legibility": "not_applicable"
          },
          {
            "number": 14,
            "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": 15,
            "label": "TV cabinet and screen",
            "category": "furniture",
            "position_hint": "east side of the living-dining shared zone, facing the table area",
            "base_layer_decision": "base_persistent_furniture",
            "render_role": "not_applicable",
            "top_down_legibility": "not_applicable"
          },
          {
            "number": 16,
            "label": "living floor stand lamp",
            "category": "furniture",
            "position_hint": "corner of the shared zone near TV or sofa-free sitting area",
            "base_layer_decision": "base_persistent_furniture",
            "render_role": "not_applicable",
            "top_down_legibility": "not_applicable"
          }
        ],
        "transient_markers_to_describe": [
          {
            "number": 27,
            "label": "small circular wrist mark",
            "category": "prop",
            "position_hint": "close detail associated with a person in the living-dining or kitchen area; not part of base diagram",
            "base_layer_decision": "state_overlay_plot_cue",
            "render_role": "not_applicable",
            "top_down_legibility": "not_applicable"
          }
        ],
        "ignored_state_overlay_markers": [
          {
            "number": 28,
            "label": "blood pool in daughter bedroom",
            "category": "prop",
            "position_hint": "floor of daughter bedroom near bed and curtained window; overlay only",
            "base_layer_decision": "state_overlay_plot_cue",
            "render_role": "not_applicable",
            "top_down_legibility": "not_applicable"
          },
          {
            "number": 29,
            "label": "bloody footprint trail to curtain",
            "category": "prop",
            "position_hint": "daughter bedroom floor path leading from doorway or bed area toward curtained window; overlay only",
            "base_layer_decision": "state_overlay_plot_cue",
            "render_role": "not_applicable",
            "top_down_legibility": "not_applicable"
          },
          {
            "number": 30,
            "label": "seated corpse behind curtain",
            "category": "prop",
            "position_hint": "behind daughter bedroom curtain at east window; overlay only",
            "base_layer_decision": "state_overlay_transient_object",
            "render_role": "not_applicable",
            "top_down_legibility": "not_applicable"
          },
          {
            "number": 31,
            "label": "crumpled photo in hand",
            "category": "prop",
            "position_hint": "near the corpse position behind the daughter bedroom curtain; overlay only",
            "base_layer_decision": "state_overlay_transient_object",
            "render_role": "not_applicable",
            "top_down_legibility": "not_applicable"
          },
          {
            "number": 32,
            "label": "red circle forming above bed",
            "category": "prop",
            "position_hint": "daughter bedroom wall above the bed; overlay only",
            "base_layer_decision": "state_overlay_plot_cue",
            "render_role": "not_applicable",
            "top_down_legibility": "not_applicable"
          },
          {
            "number": 33,
            "label": "over-cleaned restored bedroom state",
            "category": "area",
            "position_hint": "daughter bedroom surfaces where earlier stains and corpse are absent; overlay only",
            "base_layer_decision": "state_overlay_plot_cue",
            "render_role": "not_applicable",
            "top_down_legibility": "not_applicable"
          },
          {
            "number": 34,
            "label": "shifted backpack and doll",
            "category": "prop",
            "position_hint": "daughter bedroom near desk or bed, slightly displaced from prior arrangement; overlay only",
            "base_layer_decision": "state_overlay_transient_object",
            "render_role": "not_applicable",
            "top_down_legibility": "not_applicable"
          },
          {
            "number": 35,
            "label": "red circle vision in bathroom mirror",
            "category": "prop",
            "position_hint": "inside bathroom mirror reflection area; overlay only",
            "base_layer_decision": "state_overlay_plot_cue",
            "render_role": "not_applicable",
            "top_down_legibility": "not_applicable"
          },
          {
            "number": 36,
            "label": "distorted face in tabletop photo",
            "category": "prop",
            "position_hint": "on or near dining table in the shared zone; overlay only",
            "base_layer_decision": "state_overlay_plot_cue",
            "render_role": "not_applicable",
            "top_down_legibility": "not_applicable"
          },
          {
            "number": 37,
            "label": "ransacked household belongings",
            "category": "prop",
            "position_hint": "spread through living-dining zone and hall; overlay only",
            "base_layer_decision": "state_overlay_transient_object",
            "render_role": "not_applicable",
            "top_down_legibility": "not_applicable"
          },
          {
            "number": 38,
            "label": "living window open state",
            "category": "opening",
            "position_hint": "at the small living window; overlay only",
            "base_layer_decision": "state_overlay_plot_cue",
            "render_role": "not_applicable",
            "top_down_legibility": "not_applicable"
          },
          {
            "number": 39,
            "label": "overturned dining chairs",
            "category": "furniture",
            "position_hint": "around dining table in the shared zone; overlay only",
            "base_layer_decision": "state_overlay_transient_object",
            "render_role": "not_applicable",
            "top_down_legibility": "not_applicable"
          },
          {
            "number": 40,
            "label": "huge red circle with pinned blood-stained photo",
            "category": "prop",
            "position_hint": "daughter bedroom wall, centered near or above bed; overlay only",
            "base_layer_decision": "state_overlay_plot_cue",
            "render_role": "not_applicable",
            "top_down_legibility": "not_applicable"
          },
          {
            "number": 41,
            "label": "recent intruder footprints",
            "category": "prop",
            "position_hint": "entry threshold through living-dining zone toward interior hall; overlay only",
            "base_layer_decision": "state_overlay_plot_cue",
            "render_role": "not_applicable",
            "top_down_legibility": "not_applicable"
          },
          {
            "number": 42,
            "label": "recorded message phone",
            "category": "prop",
            "position_hint": "held or placed near living-dining zone while a recording is checked; overlay only",
            "base_layer_decision": "state_overlay_transient_object",
            "render_role": "not_applicable",
            "top_down_legibility": "not_applicable"
          }
        ],
        "target_unit_marker_numbers": [
          3,
          4,
          5
        ],
        "dominant_target_unit_marker_number": null,
        "clean_background_expected": false,
        "diagnostics": [
          "multiple base_structural_unit markers in use_numbered_elements ([3, 4, 5]); dominant_target_unit_marker_number left empty (W19B-1 lock — no lexical disambiguation)"
        ]
      },
      "L05B06": {
        "bg_id": "L05B06",
        "fp_id": "fp_l05_main",
        "use_numbered_elements": [
          8,
          9,
          18,
          22,
          23,
          24,
          28,
          29,
          30,
          31,
          32
        ],
        "ignore_numbered_elements": [
          27,
          33,
          34,
          35,
          36,
          37,
          38,
          39,
          40,
          41,
          42
        ],
        "base_markers_to_reference": [
          {
            "number": 8,
            "label": "daughter bedroom",
            "category": "area",
            "position_hint": "northeast private room, pale blue private zone",
            "base_layer_decision": "base_structural_unit",
            "render_role": "not_applicable",
            "top_down_legibility": "not_applicable"
          },
          {
            "number": 9,
            "label": "interior circulation hall",
            "category": "area",
            "position_hint": "narrow pale beige hall linking living area, bedrooms, and bathroom",
            "base_layer_decision": "base_structural_unit",
            "render_role": "not_applicable",
            "top_down_legibility": "not_applicable"
          },
          {
            "number": 18,
            "label": "daughter bedroom door",
            "category": "opening",
            "position_hint": "between circulation hall and northeast bedroom",
            "base_layer_decision": "base_opening",
            "render_role": "not_applicable",
            "top_down_legibility": "not_applicable"
          },
          {
            "number": 22,
            "label": "daughter bed",
            "category": "furniture",
            "position_hint": "inside daughter bedroom along the north wall",
            "base_layer_decision": "base_persistent_furniture",
            "render_role": "not_applicable",
            "top_down_legibility": "not_applicable"
          },
          {
            "number": 23,
            "label": "daughter curtained window",
            "category": "opening",
            "position_hint": "east wall of daughter bedroom, with curtain symbol",
            "base_layer_decision": "base_opening",
            "render_role": "not_applicable",
            "top_down_legibility": "not_applicable"
          },
          {
            "number": 24,
            "label": "student desk and shelf",
            "category": "furniture",
            "position_hint": "inside daughter bedroom opposite or beside the bed",
            "base_layer_decision": "base_persistent_furniture",
            "render_role": "not_applicable",
            "top_down_legibility": "not_applicable"
          }
        ],
        "transient_markers_to_describe": [
          {
            "number": 28,
            "label": "blood pool in daughter bedroom",
            "category": "prop",
            "position_hint": "floor of daughter bedroom near bed and curtained window; overlay only",
            "base_layer_decision": "state_overlay_plot_cue",
            "render_role": "not_applicable",
            "top_down_legibility": "not_applicable"
          },
          {
            "number": 29,
            "label": "bloody footprint trail to curtain",
            "category": "prop",
            "position_hint": "daughter bedroom floor path leading from doorway or bed area toward curtained window; overlay only",
            "base_layer_decision": "state_overlay_plot_cue",
            "render_role": "not_applicable",
            "top_down_legibility": "not_applicable"
          },
          {
            "number": 30,
            "label": "seated corpse behind curtain",
            "category": "prop",
            "position_hint": "behind daughter bedroom curtain at east window; overlay only",
            "base_layer_decision": "state_overlay_transient_object",
            "render_role": "not_applicable",
            "top_down_legibility": "not_applicable"
          },
          {
            "number": 31,
            "label": "crumpled photo in hand",
            "category": "prop",
            "position_hint": "near the corpse position behind the daughter bedroom curtain; overlay only",
            "base_layer_decision": "state_overlay_transient_object",
            "render_role": "not_applicable",
            "top_down_legibility": "not_applicable"
          },
          {
            "number": 32,
            "label": "red circle forming above bed",
            "category": "prop",
            "position_hint": "daughter bedroom wall above the bed; overlay only",
            "base_layer_decision": "state_overlay_plot_cue",
            "render_role": "not_applicable",
            "top_down_legibility": "not_applicable"
          }
        ],
        "ignored_state_overlay_markers": [
          {
            "number": 27,
            "label": "small circular wrist mark",
            "category": "prop",
            "position_hint": "close detail associated with a person in the living-dining or kitchen area; not part of base diagram",
            "base_layer_decision": "state_overlay_plot_cue",
            "render_role": "not_applicable",
            "top_down_legibility": "not_applicable"
          },
          {
            "number": 33,
            "label": "over-cleaned restored bedroom state",
            "category": "area",
            "position_hint": "daughter bedroom surfaces where earlier stains and corpse are absent; overlay only",
            "base_layer_decision": "state_overlay_plot_cue",
            "render_role": "not_applicable",
            "top_down_legibility": "not_applicable"
          },
          {
            "number": 34,
            "label": "shifted backpack and doll",
            "category": "prop",
            "position_hint": "daughter bedroom near desk or bed, slightly displaced from prior arrangement; overlay only",
            "base_layer_decision": "state_overlay_transient_object",
            "render_role": "not_applicable",
            "top_down_legibility": "not_applicable"
          },
          {
            "number": 35,
            "label": "red circle vision in bathroom mirror",
            "category": "prop",
            "position_hint": "inside bathroom mirror reflection area; overlay only",
            "base_layer_decision": "state_overlay_plot_cue",
            "render_role": "not_applicable",
            "top_down_legibility": "not_applicable"
          },
          {
            "number": 36,
            "label": "distorted face in tabletop photo",
            "category": "prop",
            "position_hint": "on or near dining table in the shared zone; overlay only",
            "base_layer_decision": "state_overlay_plot_cue",
            "render_role": "not_applicable",
            "top_down_legibility": "not_applicable"
          },
          {
            "number": 37,
            "label": "ransacked household belongings",
            "category": "prop",
            "position_hint": "spread through living-dining zone and hall; overlay only",
            "base_layer_decision": "state_overlay_transient_object",
            "render_role": "not_applicable",
            "top_down_legibility": "not_applicable"
          },
          {
            "number": 38,
            "label": "living window open state",
            "category": "opening",
            "position_hint": "at the small living window; overlay only",
            "base_layer_decision": "state_overlay_plot_cue",
            "render_role": "not_applicable",
            "top_down_legibility": "not_applicable"
          },
          {
            "number": 39,
            "label": "overturned dining chairs",
            "category": "furniture",
            "position_hint": "around dining table in the shared zone; overlay only",
            "base_layer_decision": "state_overlay_transient_object",
            "render_role": "not_applicable",
            "top_down_legibility": "not_applicable"
          },
          {
            "number": 40,
            "label": "huge red circle with pinned blood-stained photo",
            "category": "prop",
            "position_hint": "daughter bedroom wall, centered near or above bed; overlay only",
            "base_layer_decision": "state_overlay_plot_cue",
            "render_role": "not_applicable",
            "top_down_legibility": "not_applicable"
          },
          {
            "number": 41,
            "label": "recent intruder footprints",
            "category": "prop",
            "position_hint": "entry threshold through living-dining zone toward interior hall; overlay only",
            "base_layer_decision": "state_overlay_plot_cue",
            "render_role": "not_applicable",
            "top_down_legibility": "not_applicable"
          },
          {
            "number": 42,
            "label": "recorded message phone",
            "category": "prop",
            "position_hint": "held or placed near living-dining zone while a recording is checked; overlay only",
            "base_layer_decision": "state_overlay_transient_object",
            "render_role": "not_applicable",
            "top_down_legibility": "not_applicable"
          }
        ],
        "target_unit_marker_numbers": [
          8,
          9
        ],
        "dominant_target_unit_marker_number": null,
        "clean_background_expected": false,
        "diagnostics": [
          "multiple base_structural_unit markers in use_numbered_elements ([8, 9]); dominant_target_unit_marker_number left empty (W19B-1 lock — no lexical disambiguation)"
        ]
      },
      "L05B07": {
        "bg_id": "L05B07",
        "fp_id": "fp_l05_main",
        "use_numbered_elements": [
          8,
          9,
          18,
          22,
          23,
          24,
          33,
          34
        ],
        "ignore_numbered_elements": [
          27,
          28,
          29,
          30,
          31,
          32,
          35,
          36,
          37,
          38,
          39,
          40,
          41,
          42
        ],
        "base_markers_to_reference": [
          {
            "number": 8,
            "label": "daughter bedroom",
            "category": "area",
            "position_hint": "northeast private room, pale blue private zone",
            "base_layer_decision": "base_structural_unit",
            "render_role": "not_applicable",
            "top_down_legibility": "not_applicable"
          },
          {
            "number": 9,
            "label": "interior circulation hall",
            "category": "area",
            "position_hint": "narrow pale beige hall linking living area, bedrooms, and bathroom",
            "base_layer_decision": "base_structural_unit",
            "render_role": "not_applicable",
            "top_down_legibility": "not_applicable"
          },
          {
            "number": 18,
            "label": "daughter bedroom door",
            "category": "opening",
            "position_hint": "between circulation hall and northeast bedroom",
            "base_layer_decision": "base_opening",
            "render_role": "not_applicable",
            "top_down_legibility": "not_applicable"
          },
          {
            "number": 22,
            "label": "daughter bed",
            "category": "furniture",
            "position_hint": "inside daughter bedroom along the north wall",
            "base_layer_decision": "base_persistent_furniture",
            "render_role": "not_applicable",
            "top_down_legibility": "not_applicable"
          },
          {
            "number": 23,
            "label": "daughter curtained window",
            "category": "opening",
            "position_hint": "east wall of daughter bedroom, with curtain symbol",
            "base_layer_decision": "base_opening",
            "render_role": "not_applicable",
            "top_down_legibility": "not_applicable"
          },
          {
            "number": 24,
            "label": "student desk and shelf",
            "category": "furniture",
            "position_hint": "inside daughter bedroom opposite or beside the bed",
            "base_layer_decision": "base_persistent_furniture",
            "render_role": "not_applicable",
            "top_down_legibility": "not_applicable"
          }
        ],
        "transient_markers_to_describe": [
          {
            "number": 33,
            "label": "over-cleaned restored bedroom state",
            "category": "area",
            "position_hint": "daughter bedroom surfaces where earlier stains and corpse are absent; overlay only",
            "base_layer_decision": "state_overlay_plot_cue",
            "render_role": "not_applicable",
            "top_down_legibility": "not_applicable"
          },
          {
            "number": 34,
            "label": "shifted backpack and doll",
            "category": "prop",
            "position_hint": "daughter bedroom near desk or bed, slightly displaced from prior arrangement; overlay only",
            "base_layer_decision": "state_overlay_transient_object",
            "render_role": "not_applicable",
            "top_down_legibility": "not_applicable"
          }
        ],
        "ignored_state_overlay_markers": [
          {
            "number": 27,
            "label": "small circular wrist mark",
            "category": "prop",
            "position_hint": "close detail associated with a person in the living-dining or kitchen area; not part of base diagram",
            "base_layer_decision": "state_overlay_plot_cue",
            "render_role": "not_applicable",
            "top_down_legibility": "not_applicable"
          },
          {
            "number": 28,
            "label": "blood pool in daughter bedroom",
            "category": "prop",
            "position_hint": "floor of daughter bedroom near bed and curtained window; overlay only",
            "base_layer_decision": "state_overlay_plot_cue",
            "render_role": "not_applicable",
            "top_down_legibility": "not_applicable"
          },
          {
            "number": 29,
            "label": "bloody footprint trail to curtain",
            "category": "prop",
            "position_hint": "daughter bedroom floor path leading from doorway or bed area toward curtained window; overlay only",
            "base_layer_decision": "state_overlay_plot_cue",
            "render_role": "not_applicable",
            "top_down_legibility": "not_applicable"
          },
          {
            "number": 30,
            "label": "seated corpse behind curtain",
            "category": "prop",
            "position_hint": "behind daughter bedroom curtain at east window; overlay only",
            "base_layer_decision": "state_overlay_transient_object",
            "render_role": "not_applicable",
            "top_down_legibility": "not_applicable"
          },
          {
            "number": 31,
            "label": "crumpled photo in hand",
            "category": "prop",
            "position_hint": "near the corpse position behind the daughter bedroom curtain; overlay only",
            "base_layer_decision": "state_overlay_transient_object",
            "render_role": "not_applicable",
            "top_down_legibility": "not_applicable"
          },
          {
            "number": 32,
            "label": "red circle forming above bed",
            "category": "prop",
            "position_hint": "daughter bedroom wall above the bed; overlay only",
            "base_layer_decision": "state_overlay_plot_cue",
            "render_role": "not_applicable",
            "top_down_legibility": "not_applicable"
          },
          {
            "number": 35,
            "label": "red circle vision in bathroom mirror",
            "category": "prop",
            "position_hint": "inside bathroom mirror reflection area; overlay only",
            "base_layer_decision": "state_overlay_plot_cue",
            "render_role": "not_applicable",
            "top_down_legibility": "not_applicable"
          },
          {
            "number": 36,
            "label": "distorted face in tabletop photo",
            "category": "prop",
            "position_hint": "on or near dining table in the shared zone; overlay only",
            "base_layer_decision": "state_overlay_plot_cue",
            "render_role": "not_applicable",
            "top_down_legibility": "not_applicable"
          },
          {
            "number": 37,
            "label": "ransacked household belongings",
            "category": "prop",
            "position_hint": "spread through living-dining zone and hall; overlay only",
            "base_layer_decision": "state_overlay_transient_object",
            "render_role": "not_applicable",
            "top_down_legibility": "not_applicable"
          },
          {
            "number": 38,
            "label": "living window open state",
            "category": "opening",
            "position_hint": "at the small living window; overlay only",
            "base_layer_decision": "state_overlay_plot_cue",
            "render_role": "not_applicable",
            "top_down_legibility": "not_applicable"
          },
          {
            "number": 39,
            "label": "overturned dining chairs",
            "category": "furniture",
            "position_hint": "around dining table in the shared zone; overlay only",
            "base_layer_decision": "state_overlay_transient_object",
            "render_role": "not_applicable",
            "top_down_legibility": "not_applicable"
          },
          {
            "number": 40,
            "label": "huge red circle with pinned blood-stained photo",
            "category": "prop",
            "position_hint": "daughter bedroom wall, centered near or above bed; overlay only",
            "base_layer_decision": "state_overlay_plot_cue",
            "render_role": "not_applicable",
            "top_down_legibility": "not_applicable"
          },
          {
            "number": 41,
            "label": "recent intruder footprints",
            "category": "prop",
            "position_hint": "entry threshold through living-dining zone toward interior hall; overlay only",
            "base_layer_decision": "state_overlay_plot_cue",
            "render_role": "not_applicable",
            "top_down_legibility": "not_applicable"
          },
          {
            "number": 42,
            "label": "recorded message phone",
            "category": "prop",
            "position_hint": "held or placed near living-dining zone while a recording is checked; overlay only",
            "base_layer_decision": "state_overlay_transient_object",
            "render_role": "not_applicable",
            "top_down_legibility": "not_applicable"
          }
        ],
        "target_unit_marker_numbers": [
          8,
          9
        ],
        "dominant_target_unit_marker_number": null,
        "clean_background_expected": false,
        "diagnostics": [
          "multiple base_structural_unit markers in use_numbered_elements ([8, 9]); dominant_target_unit_marker_number left empty (W19B-1 lock — no lexical disambiguation)"
        ]
      },
      "L05B01": {
        "bg_id": "L05B01",
        "fp_id": "fp_l05_main",
        "use_numbered_elements": [
          4,
          6,
          9,
          13,
          19,
          25,
          26,
          35,
          36
        ],
        "ignore_numbered_elements": [
          27,
          28,
          29,
          30,
          31,
          32,
          33,
          34,
          37,
          38,
          39,
          40,
          41,
          42
        ],
        "base_markers_to_reference": [
          {
            "number": 4,
            "label": "living-dining shared zone",
            "category": "area",
            "position_hint": "central-left main room, pale yellow shared zone",
            "base_layer_decision": "base_structural_unit",
            "render_role": "not_applicable",
            "top_down_legibility": "not_applicable"
          },
          {
            "number": 6,
            "label": "bathroom",
            "category": "area",
            "position_hint": "southeast corner, pale cyan service room",
            "base_layer_decision": "base_structural_unit",
            "render_role": "not_applicable",
            "top_down_legibility": "not_applicable"
          },
          {
            "number": 9,
            "label": "interior circulation hall",
            "category": "area",
            "position_hint": "narrow pale beige hall linking living area, bedrooms, and bathroom",
            "base_layer_decision": "base_structural_unit",
            "render_role": "not_applicable",
            "top_down_legibility": "not_applicable"
          },
          {
            "number": 13,
            "label": "dining table",
            "category": "furniture",
            "position_hint": "center of the living-dining shared zone",
            "base_layer_decision": "base_persistent_furniture",
            "render_role": "not_applicable",
            "top_down_legibility": "not_applicable"
          },
          {
            "number": 19,
            "label": "bathroom door",
            "category": "opening",
            "position_hint": "between circulation hall and southeast bathroom",
            "base_layer_decision": "base_opening",
            "render_role": "not_applicable",
            "top_down_legibility": "not_applicable"
          },
          {
            "number": 25,
            "label": "bathroom sink toilet shower cluster",
            "category": "prop",
            "position_hint": "inside southeast bathroom along the walls",
            "base_layer_decision": "base_persistent_fixture",
            "render_role": "not_applicable",
            "top_down_legibility": "not_applicable"
          },
          {
            "number": 26,
            "label": "bathroom wall mirror",
            "category": "prop",
            "position_hint": "above bathroom sink on the bathroom wall",
            "base_layer_decision": "base_persistent_fixture",
            "render_role": "not_applicable",
            "top_down_legibility": "not_applicable"
          }
        ],
        "transient_markers_to_describe": [
          {
            "number": 35,
            "label": "red circle vision in bathroom mirror",
            "category": "prop",
            "position_hint": "inside bathroom mirror reflection area; overlay only",
            "base_layer_decision": "state_overlay_plot_cue",
            "render_role": "not_applicable",
            "top_down_legibility": "not_applicable"
          },
          {
            "number": 36,
            "label": "distorted face in tabletop photo",
            "category": "prop",
            "position_hint": "on or near dining table in the shared zone; overlay only",
            "base_layer_decision": "state_overlay_plot_cue",
            "render_role": "not_applicable",
            "top_down_legibility": "not_applicable"
          }
        ],
        "ignored_state_overlay_markers": [
          {
            "number": 27,
            "label": "small circular wrist mark",
            "category": "prop",
            "position_hint": "close detail associated with a person in the living-dining or kitchen area; not part of base diagram",
            "base_layer_decision": "state_overlay_plot_cue",
            "render_role": "not_applicable",
            "top_down_legibility": "not_applicable"
          },
          {
            "number": 28,
            "label": "blood pool in daughter bedroom",
            "category": "prop",
            "position_hint": "floor of daughter bedroom near bed and curtained window; overlay only",
            "base_layer_decision": "state_overlay_plot_cue",
            "render_role": "not_applicable",
            "top_down_legibility": "not_applicable"
          },
          {
            "number": 29,
            "label": "bloody footprint trail to curtain",
            "category": "prop",
            "position_hint": "daughter bedroom floor path leading from doorway or bed area toward curtained window; overlay only",
            "base_layer_decision": "state_overlay_plot_cue",
            "render_role": "not_applicable",
            "top_down_legibility": "not_applicable"
          },
          {
            "number": 30,
            "label": "seated corpse behind curtain",
            "category": "prop",
            "position_hint": "behind daughter bedroom curtain at east window; overlay only",
            "base_layer_decision": "state_overlay_transient_object",
            "render_role": "not_applicable",
            "top_down_legibility": "not_applicable"
          },
          {
            "number": 31,
            "label": "crumpled photo in hand",
            "category": "prop",
            "position_hint": "near the corpse position behind the daughter bedroom curtain; overlay only",
            "base_layer_decision": "state_overlay_transient_object",
            "render_role": "not_applicable",
            "top_down_legibility": "not_applicable"
          },
          {
            "number": 32,
            "label": "red circle forming above bed",
            "category": "prop",
            "position_hint": "daughter bedroom wall above the bed; overlay only",
            "base_layer_decision": "state_overlay_plot_cue",
            "render_role": "not_applicable",
            "top_down_legibility": "not_applicable"
          },
          {
            "number": 33,
            "label": "over-cleaned restored bedroom state",
            "category": "area",
            "position_hint": "daughter bedroom surfaces where earlier stains and corpse are absent; overlay only",
            "base_layer_decision": "state_overlay_plot_cue",
            "render_role": "not_applicable",
            "top_down_legibility": "not_applicable"
          },
          {
            "number": 34,
            "label": "shifted backpack and doll",
            "category": "prop",
            "position_hint": "daughter bedroom near desk or bed, slightly displaced from prior arrangement; overlay only",
            "base_layer_decision": "state_overlay_transient_object",
            "render_role": "not_applicable",
            "top_down_legibility": "not_applicable"
          },
          {
            "number": 37,
            "label": "ransacked household belongings",
            "category": "prop",
            "position_hint": "spread through living-dining zone and hall; overlay only",
            "base_layer_decision": "state_overlay_transient_object",
            "render_role": "not_applicable",
            "top_down_legibility": "not_applicable"
          },
          {
            "number": 38,
            "label": "living window open state",
            "category": "opening",
            "position_hint": "at the small living window; overlay only",
            "base_layer_decision": "state_overlay_plot_cue",
            "render_role": "not_applicable",
            "top_down_legibility": "not_applicable"
          },
          {
            "number": 39,
            "label": "overturned dining chairs",
            "category": "furniture",
            "position_hint": "around dining table in the shared zone; overlay only",
            "base_layer_decision": "state_overlay_transient_object",
            "render_role": "not_applicable",
            "top_down_legibility": "not_applicable"
          },
          {
            "number": 40,
            "label": "huge red circle with pinned blood-stained photo",
            "category": "prop",
            "position_hint": "daughter bedroom wall, centered near or above bed; overlay only",
            "base_layer_decision": "state_overlay_plot_cue",
            "render_role": "not_applicable",
            "top_down_legibility": "not_applicable"
          },
          {
            "number": 41,
            "label": "recent intruder footprints",
            "category": "prop",
            "position_hint": "entry threshold through living-dining zone toward interior hall; overlay only",
            "base_layer_decision": "state_overlay_plot_cue",
            "render_role": "not_applicable",
            "top_down_legibility": "not_applicable"
          },
          {
            "number": 42,
            "label": "recorded message phone",
            "category": "prop",
            "position_hint": "held or placed near living-dining zone while a recording is checked; overlay only",
            "base_layer_decision": "state_overlay_transient_object",
            "render_role": "not_applicable",
            "top_down_legibility": "not_applicable"
          }
        ],
        "target_unit_marker_numbers": [
          4,
          6,
          9
        ],
        "dominant_target_unit_marker_number": null,
        "clean_background_expected": false,
        "diagnostics": [
          "multiple base_structural_unit markers in use_numbered_elements ([4, 6, 9]); dominant_target_unit_marker_number left empty (W19B-1 lock — no lexical disambiguation)"
        ]
      },
      "L05B04": {
        "bg_id": "L05B04",
        "fp_id": "fp_l05_main",
        "use_numbered_elements": [
          3,
          4,
          5,
          8,
          9,
          10,
          13,
          14,
          18,
          22,
          23,
          24,
          37,
          38,
          39,
          40,
          41
        ],
        "ignore_numbered_elements": [
          27,
          28,
          29,
          30,
          31,
          32,
          33,
          34,
          35,
          36,
          42
        ],
        "base_markers_to_reference": [
          {
            "number": 3,
            "label": "entry threshold",
            "category": "area",
            "position_hint": "small pale beige foyer just inside the entrance door",
            "base_layer_decision": "base_structural_unit",
            "render_role": "not_applicable",
            "top_down_legibility": "not_applicable"
          },
          {
            "number": 4,
            "label": "living-dining shared zone",
            "category": "area",
            "position_hint": "central-left main room, pale yellow shared zone",
            "base_layer_decision": "base_structural_unit",
            "render_role": "not_applicable",
            "top_down_legibility": "not_applicable"
          },
          {
            "number": 5,
            "label": "kitchen service strip",
            "category": "area",
            "position_hint": "west side of the shared room, pale peach service strip",
            "base_layer_decision": "base_structural_unit",
            "render_role": "not_applicable",
            "top_down_legibility": "not_applicable"
          },
          {
            "number": 8,
            "label": "daughter bedroom",
            "category": "area",
            "position_hint": "northeast private room, pale blue private zone",
            "base_layer_decision": "base_structural_unit",
            "render_role": "not_applicable",
            "top_down_legibility": "not_applicable"
          },
          {
            "number": 9,
            "label": "interior circulation hall",
            "category": "area",
            "position_hint": "narrow pale beige hall linking living area, bedrooms, and bathroom",
            "base_layer_decision": "base_structural_unit",
            "render_role": "not_applicable",
            "top_down_legibility": "not_applicable"
          },
          {
            "number": 10,
            "label": "small living window",
            "category": "opening",
            "position_hint": "north or west wall of the living-dining shared zone",
            "base_layer_decision": "base_opening",
            "render_role": "not_applicable",
            "top_down_legibility": "not_applicable"
          },
          {
            "number": 13,
            "label": "dining table",
            "category": "furniture",
            "position_hint": "center of the living-dining shared zone",
            "base_layer_decision": "base_persistent_furniture",
            "render_role": "not_applicable",
            "top_down_legibility": "not_applicable"
          },
          {
            "number": 14,
            "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": 18,
            "label": "daughter bedroom door",
            "category": "opening",
            "position_hint": "between circulation hall and northeast bedroom",
            "base_layer_decision": "base_opening",
            "render_role": "not_applicable",
            "top_down_legibility": "not_applicable"
          },
          {
            "number": 22,
            "label": "daughter bed",
            "category": "furniture",
            "position_hint": "inside daughter bedroom along the north wall",
            "base_layer_decision": "base_persistent_furniture",
            "render_role": "not_applicable",
            "top_down_legibility": "not_applicable"
          },
          {
            "number": 23,
            "label": "daughter curtained window",
            "category": "opening",
            "position_hint": "east wall of daughter bedroom, with curtain symbol",
            "base_layer_decision": "base_opening",
            "render_role": "not_applicable",
            "top_down_legibility": "not_applicable"
          },
          {
            "number": 24,
            "label": "student desk and shelf",
            "category": "furniture",
            "position_hint": "inside daughter bedroom opposite or beside the bed",
            "base_layer_decision": "base_persistent_furniture",
            "render_role": "not_applicable",
            "top_down_legibility": "not_applicable"
          }
        ],
        "transient_markers_to_describe": [
          {
            "number": 37,
            "label": "ransacked household belongings",
            "category": "prop",
            "position_hint": "spread through living-dining zone and hall; overlay only",
            "base_layer_decision": "state_overlay_transient_object",
            "render_role": "not_applicable",
            "top_down_legibility": "not_applicable"
          },
          {
            "number": 38,
            "label": "living window open state",
            "category": "opening",
            "position_hint": "at the small living window; overlay only",
            "base_layer_decision": "state_overlay_plot_cue",
            "render_role": "not_applicable",
            "top_down_legibility": "not_applicable"
          },
          {
            "number": 39,
            "label": "overturned dining chairs",
            "category": "furniture",
            "position_hint": "around dining table in the shared zone; overlay only",
            "base_layer_decision": "state_overlay_transient_object",
            "render_role": "not_applicable",
            "top_down_legibility": "not_applicable"
          },
          {
            "number": 40,
            "label": "huge red circle with pinned blood-stained photo",
            "category": "prop",
            "position_hint": "daughter bedroom wall, centered near or above bed; overlay only",
            "base_layer_decision": "state_overlay_plot_cue",
            "render_role": "not_applicable",
            "top_down_legibility": "not_applicable"
          },
          {
            "number": 41,
            "label": "recent intruder footprints",
            "category": "prop",
            "position_hint": "entry threshold through living-dining zone toward interior hall; overlay only",
            "base_layer_decision": "state_overlay_plot_cue",
            "render_role": "not_applicable",
            "top_down_legibility": "not_applicable"
          }
        ],
        "ignored_state_overlay_markers": [
          {
            "number": 27,
            "label": "small circular wrist mark",
            "category": "prop",
            "position_hint": "close detail associated with a person in the living-dining or kitchen area; not part of base diagram",
            "base_layer_decision": "state_overlay_plot_cue",
            "render_role": "not_applicable",
            "top_down_legibility": "not_applicable"
          },
          {
            "number": 28,
            "label": "blood pool in daughter bedroom",
            "category": "prop",
            "position_hint": "floor of daughter bedroom near bed and curtained window; overlay only",
            "base_layer_decision": "state_overlay_plot_cue",
            "render_role": "not_applicable",
            "top_down_legibility": "not_applicable"
          },
          {
            "number": 29,
            "label": "bloody footprint trail to curtain",
            "category": "prop",
            "position_hint": "daughter bedroom floor path leading from doorway or bed area toward curtained window; overlay only",
            "base_layer_decision": "state_overlay_plot_cue",
            "render_role": "not_applicable",
            "top_down_legibility": "not_applicable"
          },
          {
            "number": 30,
            "label": "seated corpse behind curtain",
            "category": "prop",
            "position_hint": "behind daughter bedroom curtain at east window; overlay only",
            "base_layer_decision": "state_overlay_transient_object",
            "render_role": "not_applicable",
            "top_down_legibility": "not_applicable"
          },
          {
            "number": 31,
            "label": "crumpled photo in hand",
            "category": "prop",
            "position_hint": "near the corpse position behind the daughter bedroom curtain; overlay only",
            "base_layer_decision": "state_overlay_transient_object",
            "render_role": "not_applicable",
            "top_down_legibility": "not_applicable"
          },
          {
            "number": 32,
            "label": "red circle forming above bed",
            "category": "prop",
            "position_hint": "daughter bedroom wall above the bed; overlay only",
            "base_layer_decision": "state_overlay_plot_cue",
            "render_role": "not_applicable",
            "top_down_legibility": "not_applicable"
          },
          {
            "number": 33,
            "label": "over-cleaned restored bedroom state",
            "category": "area",
            "position_hint": "daughter bedroom surfaces where earlier stains and corpse are absent; overlay only",
            "base_layer_decision": "state_overlay_plot_cue",
            "render_role": "not_applicable",
            "top_down_legibility": "not_applicable"
          },
          {
            "number": 34,
            "label": "shifted backpack and doll",
            "category": "prop",
            "position_hint": "daughter bedroom near desk or bed, slightly displaced from prior arrangement; overlay only",
            "base_layer_decision": "state_overlay_transient_object",
            "render_role": "not_applicable",
            "top_down_legibility": "not_applicable"
          },
          {
            "number": 35,
            "label": "red circle vision in bathroom mirror",
            "category": "prop",
            "position_hint": "inside bathroom mirror reflection area; overlay only",
            "base_layer_decision": "state_overlay_plot_cue",
            "render_role": "not_applicable",
            "top_down_legibility": "not_applicable"
          },
          {
            "number": 36,
            "label": "distorted face in tabletop photo",
            "category": "prop",
            "position_hint": "on or near dining table in the shared zone; overlay only",
            "base_layer_decision": "state_overlay_plot_cue",
            "render_role": "not_applicable",
            "top_down_legibility": "not_applicable"
          },
          {
            "number": 42,
            "label": "recorded message phone",
            "category": "prop",
            "position_hint": "held or placed near living-dining zone while a recording is checked; overlay only",
            "base_layer_decision": "state_overlay_transient_object",
            "render_role": "not_applicable",
            "top_down_legibility": "not_applicable"
          }
        ],
        "target_unit_marker_numbers": [
          3,
          4,
          5,
          8,
          9
        ],
        "dominant_target_unit_marker_number": null,
        "clean_background_expected": false,
        "diagnostics": [
          "multiple base_structural_unit markers in use_numbered_elements ([3, 4, 5, 8, 9]); dominant_target_unit_marker_number left empty (W19B-1 lock — no lexical disambiguation)"
        ]
      },
      "L05B05": {
        "bg_id": "L05B05",
        "fp_id": "fp_l05_main",
        "use_numbered_elements": [
          3,
          4,
          5,
          9,
          10,
          13,
          14,
          15,
          16,
          37,
          39,
          41,
          42
        ],
        "ignore_numbered_elements": [
          27,
          28,
          29,
          30,
          31,
          32,
          33,
          34,
          35,
          36,
          38,
          40
        ],
        "base_markers_to_reference": [
          {
            "number": 3,
            "label": "entry threshold",
            "category": "area",
            "position_hint": "small pale beige foyer just inside the entrance door",
            "base_layer_decision": "base_structural_unit",
            "render_role": "not_applicable",
            "top_down_legibility": "not_applicable"
          },
          {
            "number": 4,
            "label": "living-dining shared zone",
            "category": "area",
            "position_hint": "central-left main room, pale yellow shared zone",
            "base_layer_decision": "base_structural_unit",
            "render_role": "not_applicable",
            "top_down_legibility": "not_applicable"
          },
          {
            "number": 5,
            "label": "kitchen service strip",
            "category": "area",
            "position_hint": "west side of the shared room, pale peach service strip",
            "base_layer_decision": "base_structural_unit",
            "render_role": "not_applicable",
            "top_down_legibility": "not_applicable"
          },
          {
            "number": 9,
            "label": "interior circulation hall",
            "category": "area",
            "position_hint": "narrow pale beige hall linking living area, bedrooms, and bathroom",
            "base_layer_decision": "base_structural_unit",
            "render_role": "not_applicable",
            "top_down_legibility": "not_applicable"
          },
          {
            "number": 10,
            "label": "small living window",
            "category": "opening",
            "position_hint": "north or west wall of the living-dining shared zone",
            "base_layer_decision": "base_opening",
            "render_role": "not_applicable",
            "top_down_legibility": "not_applicable"
          },
          {
            "number": 13,
            "label": "dining table",
            "category": "furniture",
            "position_hint": "center of the living-dining shared zone",
            "base_layer_decision": "base_persistent_furniture",
            "render_role": "not_applicable",
            "top_down_legibility": "not_applicable"
          },
          {
            "number": 14,
            "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": 15,
            "label": "TV cabinet and screen",
            "category": "furniture",
            "position_hint": "east side of the living-dining shared zone, facing the table area",
            "base_layer_decision": "base_persistent_furniture",
            "render_role": "not_applicable",
            "top_down_legibility": "not_applicable"
          },
          {
            "number": 16,
            "label": "living floor stand lamp",
            "category": "furniture",
            "position_hint": "corner of the shared zone near TV or sofa-free sitting area",
            "base_layer_decision": "base_persistent_furniture",
            "render_role": "not_applicable",
            "top_down_legibility": "not_applicable"
          }
        ],
        "transient_markers_to_describe": [
          {
            "number": 37,
            "label": "ransacked household belongings",
            "category": "prop",
            "position_hint": "spread through living-dining zone and hall; overlay only",
            "base_layer_decision": "state_overlay_transient_object",
            "render_role": "not_applicable",
            "top_down_legibility": "not_applicable"
          },
          {
            "number": 39,
            "label": "overturned dining chairs",
            "category": "furniture",
            "position_hint": "around dining table in the shared zone; overlay only",
            "base_layer_decision": "state_overlay_transient_object",
            "render_role": "not_applicable",
            "top_down_legibility": "not_applicable"
          },
          {
            "number": 41,
            "label": "recent intruder footprints",
            "category": "prop",
            "position_hint": "entry threshold through living-dining zone toward interior hall; overlay only",
            "base_layer_decision": "state_overlay_plot_cue",
            "render_role": "not_applicable",
            "top_down_legibility": "not_applicable"
          },
          {
            "number": 42,
            "label": "recorded message phone",
            "category": "prop",
            "position_hint": "held or placed near living-dining zone while a recording is checked; overlay only",
            "base_layer_decision": "state_overlay_transient_object",
            "render_role": "not_applicable",
            "top_down_legibility": "not_applicable"
          }
        ],
        "ignored_state_overlay_markers": [
          {
            "number": 27,
            "label": "small circular wrist mark",
            "category": "prop",
            "position_hint": "close detail associated with a person in the living-dining or kitchen area; not part of base diagram",
            "base_layer_decision": "state_overlay_plot_cue",
            "render_role": "not_applicable",
            "top_down_legibility": "not_applicable"
          },
          {
            "number": 28,
            "label": "blood pool in daughter bedroom",
            "category": "prop",
            "position_hint": "floor of daughter bedroom near bed and curtained window; overlay only",
            "base_layer_decision": "state_overlay_plot_cue",
            "render_role": "not_applicable",
            "top_down_legibility": "not_applicable"
          },
          {
            "number": 29,
            "label": "bloody footprint trail to curtain",
            "category": "prop",
            "position_hint": "daughter bedroom floor path leading from doorway or bed area toward curtained window; overlay only",
            "base_layer_decision": "state_overlay_plot_cue",
            "render_role": "not_applicable",
            "top_down_legibility": "not_applicable"
          },
          {
            "number": 30,
            "label": "seated corpse behind curtain",
            "category": "prop",
            "position_hint": "behind daughter bedroom curtain at east window; overlay only",
            "base_layer_decision": "state_overlay_transient_object",
            "render_role": "not_applicable",
            "top_down_legibility": "not_applicable"
          },
          {
            "number": 31,
            "label": "crumpled photo in hand",
            "category": "prop",
            "position_hint": "near the corpse position behind the daughter bedroom curtain; overlay only",
            "base_layer_decision": "state_overlay_transient_object",
            "render_role": "not_applicable",
            "top_down_legibility": "not_applicable"
          },
          {
            "number": 32,
            "label": "red circle forming above bed",
            "category": "prop",
            "position_hint": "daughter bedroom wall above the bed; overlay only",
            "base_layer_decision": "state_overlay_plot_cue",
            "render_role": "not_applicable",
            "top_down_legibility": "not_applicable"
          },
          {
            "number": 33,
            "label": "over-cleaned restored bedroom state",
            "category": "area",
            "position_hint": "daughter bedroom surfaces where earlier stains and corpse are absent; overlay only",
            "base_layer_decision": "state_overlay_plot_cue",
            "render_role": "not_applicable",
            "top_down_legibility": "not_applicable"
          },
          {
            "number": 34,
            "label": "shifted backpack and doll",
            "category": "prop",
            "position_hint": "daughter bedroom near desk or bed, slightly displaced from prior arrangement; overlay only",
            "base_layer_decision": "state_overlay_transient_object",
            "render_role": "not_applicable",
            "top_down_legibility": "not_applicable"
          },
          {
            "number": 35,
            "label": "red circle vision in bathroom mirror",
            "category": "prop",
            "position_hint": "inside bathroom mirror reflection area; overlay only",
            "base_layer_decision": "state_overlay_plot_cue",
            "render_role": "not_applicable",
            "top_down_legibility": "not_applicable"
          },
          {
            "number": 36,
            "label": "distorted face in tabletop photo",
            "category": "prop",
            "position_hint": "on or near dining table in the shared zone; overlay only",
            "base_layer_decision": "state_overlay_plot_cue",
            "render_role": "not_applicable",
            "top_down_legibility": "not_applicable"
          },
          {
            "number": 38,
            "label": "living window open state",
            "category": "opening",
            "position_hint": "at the small living window; overlay only",
            "base_layer_decision": "state_overlay_plot_cue",
            "render_role": "not_applicable",
            "top_down_legibility": "not_applicable"
          },
          {
            "number": 40,
            "label": "huge red circle with pinned blood-stained photo",
            "category": "prop",
            "position_hint": "daughter bedroom wall, centered near or above bed; overlay only",
            "base_layer_decision": "state_overlay_plot_cue",
            "render_role": "not_applicable",
            "top_down_legibility": "not_applicable"
          }
        ],
        "target_unit_marker_numbers": [
          3,
          4,
          5,
          9
        ],
        "dominant_target_unit_marker_number": null,
        "clean_background_expected": false,
        "diagnostics": [
          "multiple base_structural_unit markers in use_numbered_elements ([3, 4, 5, 9]); dominant_target_unit_marker_number left empty (W19B-1 lock — no lexical disambiguation)"
        ]
      },
      "L11B02": {
        "bg_id": "L11B02",
        "fp_id": "fp_l11_stairs",
        "use_numbered_elements": [
          1,
          2,
          3,
          4,
          5,
          6,
          7,
          8,
          9,
          10
        ],
        "ignore_numbered_elements": [],
        "base_markers_to_reference": [
          {
            "number": 1,
            "label": "lower rear yard area",
            "category": "area",
            "position_hint": "southwest corner at the foot of the exterior stairs",
            "base_layer_decision": "base_structural_unit",
            "render_role": "not_applicable",
            "top_down_legibility": "not_applicable"
          },
          {
            "number": 2,
            "label": "exterior stair run",
            "category": "area",
            "position_hint": "diagonal or L-shaped run rising from the lower yard toward the rooftop landing",
            "base_layer_decision": "base_structural_unit",
            "render_role": "not_applicable",
            "top_down_legibility": "not_applicable"
          },
          {
            "number": 3,
            "label": "intermediate stair landing",
            "category": "area",
            "position_hint": "middle turn point between the lower stair run and upper stair run",
            "base_layer_decision": "base_structural_unit",
            "render_role": "not_applicable",
            "top_down_legibility": "not_applicable"
          },
          {
            "number": 4,
            "label": "top rooftop landing",
            "category": "area",
            "position_hint": "northeast upper end of the stairs directly before the rooftop entrance",
            "base_layer_decision": "base_structural_unit",
            "render_role": "not_applicable",
            "top_down_legibility": "not_applicable"
          },
          {
            "number": 5,
            "label": "rooftop metal entrance door",
            "category": "opening",
            "position_hint": "north or east wall of the rooftop room, opening onto the top landing",
            "base_layer_decision": "base_opening",
            "render_role": "not_applicable",
            "top_down_legibility": "not_applicable"
          },
          {
            "number": 6,
            "label": "metal stair handrail",
            "category": "prop",
            "position_hint": "outer edge of the exterior stair run and around the top landing",
            "base_layer_decision": "base_persistent_fixture",
            "render_role": "not_applicable",
            "top_down_legibility": "not_applicable"
          },
          {
            "number": 7,
            "label": "rooftop room wall block",
            "category": "area",
            "position_hint": "beyond the entrance door, forming the boundary of the rooftop room",
            "base_layer_decision": "base_structural_unit",
            "render_role": "not_applicable",
            "top_down_legibility": "not_applicable"
          },
          {
            "number": 8,
            "label": "wall-mounted exterior stair light",
            "category": "prop",
            "position_hint": "near the rooftop entrance wall above or beside the top landing",
            "base_layer_decision": "base_persistent_fixture",
            "render_role": "not_applicable",
            "top_down_legibility": "not_applicable"
          }
        ],
        "transient_markers_to_describe": [
          {
            "number": 9,
            "label": "foul odor zone",
            "category": "area",
            "position_hint": "upper stair run and top landing approach near the rooftop entrance",
            "base_layer_decision": "state_overlay_plot_cue",
            "render_role": "not_applicable",
            "top_down_legibility": "not_applicable"
          },
          {
            "number": 10,
            "label": "half-open door state",
            "category": "opening",
            "position_hint": "at the rooftop metal entrance door on the top landing",
            "base_layer_decision": "state_overlay_plot_cue",
            "render_role": "not_applicable",
            "top_down_legibility": "not_applicable"
          }
        ],
        "ignored_state_overlay_markers": [],
        "target_unit_marker_numbers": [
          1,
          2,
          3,
          4,
          7
        ],
        "dominant_target_unit_marker_number": null,
        "clean_background_expected": false,
        "diagnostics": [
          "multiple base_structural_unit markers in use_numbered_elements ([1, 2, 3, 4, 7]); dominant_target_unit_marker_number left empty (W19B-1 lock — no lexical disambiguation)"
        ]
      },
      "L11B03": {
        "bg_id": "L11B03",
        "fp_id": "fp_l11_yard",
        "use_numbered_elements": [
          1,
          2,
          3,
          4,
          5,
          6,
          7,
          8,
          9,
          10,
          11,
          12,
          13
        ],
        "ignore_numbered_elements": [],
        "base_markers_to_reference": [
          {
            "number": 1,
            "label": "shared paved courtyard",
            "category": "area",
            "position_hint": "center of villa yard inside boundary wall",
            "base_layer_decision": "base_structural_unit",
            "render_role": "not_applicable",
            "top_down_legibility": "not_applicable"
          },
          {
            "number": 2,
            "label": "narrow front road edge",
            "category": "area",
            "position_hint": "south side outside the courtyard gate",
            "base_layer_decision": "base_structural_unit",
            "render_role": "not_applicable",
            "top_down_legibility": "not_applicable"
          },
          {
            "number": 3,
            "label": "villa front building footprint",
            "category": "area",
            "position_hint": "north and east edge of courtyard, attached to stair access",
            "base_layer_decision": "base_structural_unit",
            "render_role": "not_applicable",
            "top_down_legibility": "not_applicable"
          },
          {
            "number": 4,
            "label": "metal street gate",
            "category": "opening",
            "position_hint": "south boundary, connecting courtyard to front road",
            "base_layer_decision": "base_opening",
            "render_role": "not_applicable",
            "top_down_legibility": "not_applicable"
          },
          {
            "number": 5,
            "label": "gate threshold pad",
            "category": "area",
            "position_hint": "just inside the metal gate at the south side of courtyard",
            "base_layer_decision": "base_structural_unit",
            "render_role": "not_applicable",
            "top_down_legibility": "not_applicable"
          },
          {
            "number": 6,
            "label": "exterior stair access to rooftop room",
            "category": "area",
            "position_hint": "rear-right side of courtyard against villa building footprint",
            "base_layer_decision": "base_structural_unit",
            "render_role": "not_applicable",
            "top_down_legibility": "not_applicable"
          },
          {
            "number": 7,
            "label": "rear bicycle parking spot",
            "category": "area",
            "position_hint": "shaded rear-left corner of courtyard, away from gate path",
            "base_layer_decision": "base_structural_unit",
            "render_role": "not_applicable",
            "top_down_legibility": "not_applicable"
          },
          {
            "number": 8,
            "label": "low boundary wall line",
            "category": "area",
            "position_hint": "perimeter around courtyard, broken at the metal gate",
            "base_layer_decision": "base_structural_unit",
            "render_role": "not_applicable",
            "top_down_legibility": "not_applicable"
          }
        ],
        "transient_markers_to_describe": [
          {
            "number": 9,
            "label": "police car arrival position",
            "category": "prop",
            "position_hint": "front road immediately outside the metal gate",
            "base_layer_decision": "state_overlay_transient_object",
            "render_role": "not_applicable",
            "top_down_legibility": "not_applicable"
          },
          {
            "number": 10,
            "label": "flashing siren cue",
            "category": "prop",
            "position_hint": "above the temporary police car position on the front road",
            "base_layer_decision": "state_overlay_plot_cue",
            "render_role": "not_applicable",
            "top_down_legibility": "not_applicable"
          },
          {
            "number": 11,
            "label": "dazed young resident position",
            "category": "prop",
            "position_hint": "inside courtyard near the gate threshold",
            "base_layer_decision": "state_overlay_transient_object",
            "render_role": "not_applicable",
            "top_down_legibility": "not_applicable"
          },
          {
            "number": 12,
            "label": "arriving female officer position",
            "category": "prop",
            "position_hint": "moving from front road through gate toward the dazed young resident",
            "base_layer_decision": "state_overlay_transient_object",
            "render_role": "not_applicable",
            "top_down_legibility": "not_applicable"
          },
          {
            "number": 13,
            "label": "hastily parked bicycle",
            "category": "prop",
            "position_hint": "rear bicycle parking spot in the back corner of the courtyard",
            "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,
          5,
          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, 5, 6, 7, 8]); dominant_target_unit_marker_number left empty (W19B-1 lock — no lexical disambiguation)"
        ]
      },
      "L11B01": {
        "bg_id": "L11B01",
        "fp_id": "fp_l11_exterior",
        "use_numbered_elements": [
          1,
          2,
          3,
          4,
          6,
          7,
          9,
          11,
          12
        ],
        "ignore_numbered_elements": [],
        "base_markers_to_reference": [
          {
            "number": 1,
            "label": "exterior alley viewing zone",
            "category": "area",
            "position_hint": "south edge outside the property wall, narrow street-side strip",
            "base_layer_decision": "base_structural_unit",
            "render_role": "not_applicable",
            "top_down_legibility": "not_applicable"
          },
          {
            "number": 2,
            "label": "low boundary wall",
            "category": "area",
            "position_hint": "south perimeter line between alley and courtyard, foreground wall line",
            "base_layer_decision": "base_structural_unit",
            "render_role": "not_applicable",
            "top_down_legibility": "not_applicable"
          },
          {
            "number": 3,
            "label": "small recessed courtyard",
            "category": "area",
            "position_hint": "inside boundary wall, south of the building footprint",
            "base_layer_decision": "base_structural_unit",
            "render_role": "not_applicable",
            "top_down_legibility": "not_applicable"
          },
          {
            "number": 4,
            "label": "old low-rise building footprint",
            "category": "area",
            "position_hint": "central mass of the plan, north of courtyard, facade facing south",
            "base_layer_decision": "base_structural_unit",
            "render_role": "not_applicable",
            "top_down_legibility": "not_applicable"
          },
          {
            "number": 6,
            "label": "rooftop utility terrace",
            "category": "area",
            "position_hint": "top surface of main building footprint surrounding rooftop room",
            "base_layer_decision": "base_structural_unit",
            "render_role": "not_applicable",
            "top_down_legibility": "not_applicable"
          },
          {
            "number": 7,
            "label": "compact rooftop room volume",
            "category": "area",
            "position_hint": "on roof terrace, slightly north-central, south face visible from alley",
            "base_layer_decision": "base_structural_unit",
            "render_role": "not_applicable",
            "top_down_legibility": "not_applicable"
          },
          {
            "number": 9,
            "label": "small rooftop room window",
            "category": "opening",
            "position_hint": "south-facing wall of rooftop room, aligned toward courtyard and alley",
            "base_layer_decision": "base_opening",
            "render_role": "not_applicable",
            "top_down_legibility": "not_applicable"
          }
        ],
        "transient_markers_to_describe": [
          {
            "number": 11,
            "label": "dawn light from rooftop window",
            "category": "prop",
            "position_hint": "coincident with number 9, visible only as per-background overlay state",
            "base_layer_decision": "state_overlay_plot_cue",
            "render_role": "not_applicable",
            "top_down_legibility": "not_applicable"
          },
          {
            "number": 12,
            "label": "black cat watching window",
            "category": "prop",
            "position_hint": "on or beside number 2 boundary wall, oriented toward number 9",
            "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,
          6,
          7
        ],
        "dominant_target_unit_marker_number": null,
        "clean_background_expected": false,
        "diagnostics": [
          "multiple base_structural_unit markers in use_numbered_elements ([1, 2, 3, 4, 6, 7]); dominant_target_unit_marker_number left empty (W19B-1 lock — no lexical disambiguation)"
        ]
      },
      "L10B02": {
        "bg_id": "L10B02",
        "fp_id": "fp_market_exterior",
        "use_numbered_elements": [
          1,
          2,
          3,
          4,
          5,
          7,
          8,
          9,
          10,
          11,
          13
        ],
        "ignore_numbered_elements": [],
        "base_markers_to_reference": [
          {
            "number": 1,
            "label": "market building footprint and facade zone",
            "category": "area",
            "position_hint": "north side of plan, long horizontal building mass facing south toward sidewalk",
            "base_layer_decision": "base_structural_unit",
            "render_role": "not_applicable",
            "top_down_legibility": "not_applicable"
          },
          {
            "number": 2,
            "label": "covered entrance threshold zone",
            "category": "area",
            "position_hint": "center of facade, immediately outside the main sliding entrance",
            "base_layer_decision": "base_structural_unit",
            "render_role": "not_applicable",
            "top_down_legibility": "not_applicable"
          },
          {
            "number": 3,
            "label": "public sidewalk frontage zone",
            "category": "area",
            "position_hint": "broad band across the south side of the facade between entrance and curb",
            "base_layer_decision": "base_structural_unit",
            "render_role": "not_applicable",
            "top_down_legibility": "not_applicable"
          },
          {
            "number": 4,
            "label": "bike parking edge zone",
            "category": "area",
            "position_hint": "left side of sidewalk frontage, along the facade edge near the entrance approach",
            "base_layer_decision": "base_structural_unit",
            "render_role": "not_applicable",
            "top_down_legibility": "not_applicable"
          },
          {
            "number": 5,
            "label": "curb and street edge zone",
            "category": "area",
            "position_hint": "southernmost band of plan, parallel to the market facade",
            "base_layer_decision": "base_structural_unit",
            "render_role": "not_applicable",
            "top_down_legibility": "not_applicable"
          },
          {
            "number": 7,
            "label": "automatic sliding glass entrance",
            "category": "opening",
            "position_hint": "center of north facade, opening from threshold zone into market building",
            "base_layer_decision": "base_opening",
            "render_role": "not_applicable",
            "top_down_legibility": "not_applicable"
          },
          {
            "number": 8,
            "label": "left display window band",
            "category": "opening",
            "position_hint": "north facade, left of the main entrance",
            "base_layer_decision": "base_opening",
            "render_role": "not_applicable",
            "top_down_legibility": "not_applicable"
          },
          {
            "number": 9,
            "label": "right display window band",
            "category": "opening",
            "position_hint": "north facade, between the main entrance and exterior corner return wall",
            "base_layer_decision": "base_opening",
            "render_role": "not_applicable",
            "top_down_legibility": "not_applicable"
          },
          {
            "number": 10,
            "label": "main facade sign band",
            "category": "prop",
            "position_hint": "mounted along the front facade above the entrance and display windows, represented as a thin fixed rectangle in plan",
            "base_layer_decision": "base_persistent_fixture",
            "render_role": "not_applicable",
            "top_down_legibility": "not_applicable"
          },
          {
            "number": 11,
            "label": "U-shaped bicycle rack row",
            "category": "prop",
            "position_hint": "inside bike parking edge zone, left of entrance threshold and parallel to facade",
            "base_layer_decision": "base_persistent_fixture",
            "render_role": "not_applicable",
            "top_down_legibility": "not_applicable"
          }
        ],
        "transient_markers_to_describe": [
          {
            "number": 13,
            "label": "parked bicycle",
            "category": "prop",
            "position_hint": "temporarily placed at the bicycle rack row in the bike parking edge zone during arrival or exit moments",
            "base_layer_decision": "state_overlay_transient_object",
            "render_role": "not_applicable",
            "top_down_legibility": "not_applicable"
          }
        ],
        "ignored_state_overlay_markers": [],
        "target_unit_marker_numbers": [
          1,
          2,
          3,
          4,
          5
        ],
        "dominant_target_unit_marker_number": null,
        "clean_background_expected": false,
        "diagnostics": [
          "multiple base_structural_unit markers in use_numbered_elements ([1, 2, 3, 4, 5]); dominant_target_unit_marker_number left empty (W19B-1 lock — no lexical disambiguation)"
        ]
      },
      "L10B04": {
        "bg_id": "L10B04",
        "fp_id": "fp_market_exterior",
        "use_numbered_elements": [
          1,
          2,
          3,
          4,
          5,
          6,
          7,
          8,
          9,
          10,
          11,
          12,
          13
        ],
        "ignore_numbered_elements": [],
        "base_markers_to_reference": [
          {
            "number": 1,
            "label": "market building footprint and facade zone",
            "category": "area",
            "position_hint": "north side of plan, long horizontal building mass facing south toward sidewalk",
            "base_layer_decision": "base_structural_unit",
            "render_role": "not_applicable",
            "top_down_legibility": "not_applicable"
          },
          {
            "number": 2,
            "label": "covered entrance threshold zone",
            "category": "area",
            "position_hint": "center of facade, immediately outside the main sliding entrance",
            "base_layer_decision": "base_structural_unit",
            "render_role": "not_applicable",
            "top_down_legibility": "not_applicable"
          },
          {
            "number": 3,
            "label": "public sidewalk frontage zone",
            "category": "area",
            "position_hint": "broad band across the south side of the facade between entrance and curb",
            "base_layer_decision": "base_structural_unit",
            "render_role": "not_applicable",
            "top_down_legibility": "not_applicable"
          },
          {
            "number": 4,
            "label": "bike parking edge zone",
            "category": "area",
            "position_hint": "left side of sidewalk frontage, along the facade edge near the entrance approach",
            "base_layer_decision": "base_structural_unit",
            "render_role": "not_applicable",
            "top_down_legibility": "not_applicable"
          },
          {
            "number": 5,
            "label": "curb and street edge zone",
            "category": "area",
            "position_hint": "southernmost band of plan, parallel to the market facade",
            "base_layer_decision": "base_structural_unit",
            "render_role": "not_applicable",
            "top_down_legibility": "not_applicable"
          },
          {
            "number": 6,
            "label": "exterior corner return wall zone",
            "category": "area",
            "position_hint": "right end of facade where the wall turns back along the side elevation",
            "base_layer_decision": "base_structural_unit",
            "render_role": "not_applicable",
            "top_down_legibility": "not_applicable"
          },
          {
            "number": 7,
            "label": "automatic sliding glass entrance",
            "category": "opening",
            "position_hint": "center of north facade, opening from threshold zone into market building",
            "base_layer_decision": "base_opening",
            "render_role": "not_applicable",
            "top_down_legibility": "not_applicable"
          },
          {
            "number": 8,
            "label": "left display window band",
            "category": "opening",
            "position_hint": "north facade, left of the main entrance",
            "base_layer_decision": "base_opening",
            "render_role": "not_applicable",
            "top_down_legibility": "not_applicable"
          },
          {
            "number": 9,
            "label": "right display window band",
            "category": "opening",
            "position_hint": "north facade, between the main entrance and exterior corner return wall",
            "base_layer_decision": "base_opening",
            "render_role": "not_applicable",
            "top_down_legibility": "not_applicable"
          },
          {
            "number": 10,
            "label": "main facade sign band",
            "category": "prop",
            "position_hint": "mounted along the front facade above the entrance and display windows, represented as a thin fixed rectangle in plan",
            "base_layer_decision": "base_persistent_fixture",
            "render_role": "not_applicable",
            "top_down_legibility": "not_applicable"
          },
          {
            "number": 11,
            "label": "U-shaped bicycle rack row",
            "category": "prop",
            "position_hint": "inside bike parking edge zone, left of entrance threshold and parallel to facade",
            "base_layer_decision": "base_persistent_fixture",
            "render_role": "not_applicable",
            "top_down_legibility": "not_applicable"
          },
          {
            "number": 12,
            "label": "wall-mounted CCTV camera",
            "category": "prop",
            "position_hint": "high on the exterior corner return wall near the right facade corner, shown as a small fixed camera glyph without a field-of-view cone",
            "base_layer_decision": "base_persistent_fixture",
            "render_role": "not_applicable",
            "top_down_legibility": "not_applicable"
          }
        ],
        "transient_markers_to_describe": [
          {
            "number": 13,
            "label": "parked bicycle",
            "category": "prop",
            "position_hint": "temporarily placed at the bicycle rack row in the bike parking edge zone during arrival or exit moments",
            "base_layer_decision": "state_overlay_transient_object",
            "render_role": "not_applicable",
            "top_down_legibility": "not_applicable"
          }
        ],
        "ignored_state_overlay_markers": [],
        "target_unit_marker_numbers": [
          1,
          2,
          3,
          4,
          5,
          6
        ],
        "dominant_target_unit_marker_number": null,
        "clean_background_expected": false,
        "diagnostics": [
          "multiple base_structural_unit markers in use_numbered_elements ([1, 2, 3, 4, 5, 6]); dominant_target_unit_marker_number left empty (W19B-1 lock — no lexical disambiguation)"
        ]
      },
      "L10B03": {
        "bg_id": "L10B03",
        "fp_id": "fp_market_exterior",
        "use_numbered_elements": [
          1,
          3,
          5,
          6,
          12
        ],
        "ignore_numbered_elements": [
          13
        ],
        "base_markers_to_reference": [
          {
            "number": 1,
            "label": "market building footprint and facade zone",
            "category": "area",
            "position_hint": "north side of plan, long horizontal building mass facing south toward sidewalk",
            "base_layer_decision": "base_structural_unit",
            "render_role": "not_applicable",
            "top_down_legibility": "not_applicable"
          },
          {
            "number": 3,
            "label": "public sidewalk frontage zone",
            "category": "area",
            "position_hint": "broad band across the south side of the facade between entrance and curb",
            "base_layer_decision": "base_structural_unit",
            "render_role": "not_applicable",
            "top_down_legibility": "not_applicable"
          },
          {
            "number": 5,
            "label": "curb and street edge zone",
            "category": "area",
            "position_hint": "southernmost band of plan, parallel to the market facade",
            "base_layer_decision": "base_structural_unit",
            "render_role": "not_applicable",
            "top_down_legibility": "not_applicable"
          },
          {
            "number": 6,
            "label": "exterior corner return wall zone",
            "category": "area",
            "position_hint": "right end of facade where the wall turns back along the side elevation",
            "base_layer_decision": "base_structural_unit",
            "render_role": "not_applicable",
            "top_down_legibility": "not_applicable"
          },
          {
            "number": 12,
            "label": "wall-mounted CCTV camera",
            "category": "prop",
            "position_hint": "high on the exterior corner return wall near the right facade corner, shown as a small fixed camera glyph without a field-of-view cone",
            "base_layer_decision": "base_persistent_fixture",
            "render_role": "not_applicable",
            "top_down_legibility": "not_applicable"
          }
        ],
        "transient_markers_to_describe": [],
        "ignored_state_overlay_markers": [
          {
            "number": 13,
            "label": "parked bicycle",
            "category": "prop",
            "position_hint": "temporarily placed at the bicycle rack row in the bike parking edge zone during arrival or exit moments",
            "base_layer_decision": "state_overlay_transient_object",
            "render_role": "not_applicable",
            "top_down_legibility": "not_applicable"
          }
        ],
        "target_unit_marker_numbers": [
          1,
          3,
          5,
          6
        ],
        "dominant_target_unit_marker_number": null,
        "clean_background_expected": true,
        "diagnostics": [
          "multiple base_structural_unit markers in use_numbered_elements ([1, 3, 5, 6]); dominant_target_unit_marker_number left empty (W19B-1 lock — no lexical disambiguation)"
        ]
      },
      "L15B01": {
        "bg_id": "L15B01",
        "fp_id": "fp_admin_office",
        "use_numbered_elements": [
          1,
          2,
          3,
          4,
          5,
          6,
          7,
          8,
          9,
          10,
          11,
          12,
          13
        ],
        "ignore_numbered_elements": [],
        "base_markers_to_reference": [
          {
            "number": 1,
            "label": "main shared work zone",
            "category": "area",
            "position_hint": "central area of admin office around the review desk",
            "base_layer_decision": "base_structural_unit",
            "render_role": "not_applicable",
            "top_down_legibility": "not_applicable"
          },
          {
            "number": 2,
            "label": "threshold entry zone",
            "category": "area",
            "position_hint": "south side of room just inside the corridor entrance",
            "base_layer_decision": "base_structural_unit",
            "render_role": "not_applicable",
            "top_down_legibility": "not_applicable"
          },
          {
            "number": 3,
            "label": "corridor entrance door",
            "category": "opening",
            "position_hint": "south wall, left of center, swinging inward from service corridor",
            "base_layer_decision": "base_opening",
            "render_role": "not_applicable",
            "top_down_legibility": "not_applicable"
          },
          {
            "number": 4,
            "label": "CCTV review desk",
            "category": "furniture",
            "position_hint": "north half of room, long desk facing north wall",
            "base_layer_decision": "base_persistent_furniture",
            "render_role": "not_applicable",
            "top_down_legibility": "not_applicable"
          },
          {
            "number": 5,
            "label": "CCTV monitor bank",
            "category": "prop",
            "position_hint": "on north wall and rear edge of number 4 desk",
            "base_layer_decision": "base_persistent_fixture",
            "render_role": "not_applicable",
            "top_down_legibility": "not_applicable"
          },
          {
            "number": 6,
            "label": "security staff chair",
            "category": "furniture",
            "position_hint": "behind number 4 desk, facing number 5 monitor bank",
            "base_layer_decision": "base_persistent_furniture",
            "render_role": "not_applicable",
            "top_down_legibility": "not_applicable"
          },
          {
            "number": 7,
            "label": "visitor side chairs",
            "category": "furniture",
            "position_hint": "southwest side of room, facing the CCTV desk",
            "base_layer_decision": "base_persistent_furniture",
            "render_role": "not_applicable",
            "top_down_legibility": "not_applicable"
          },
          {
            "number": 8,
            "label": "visitor observation area",
            "category": "area",
            "position_hint": "rear central floor area between entrance zone and desk",
            "base_layer_decision": "base_structural_unit",
            "render_role": "not_applicable",
            "top_down_legibility": "not_applicable"
          },
          {
            "number": 9,
            "label": "filing cabinet row",
            "category": "furniture",
            "position_hint": "east wall, middle to north side",
            "base_layer_decision": "base_persistent_furniture",
            "render_role": "not_applicable",
            "top_down_legibility": "not_applicable"
          },
          {
            "number": 10,
            "label": "small interior window",
            "category": "opening",
            "position_hint": "west wall, high narrow interior window toward retail/service side",
            "base_layer_decision": "base_opening",
            "render_role": "not_applicable",
            "top_down_legibility": "not_applicable"
          },
          {
            "number": 11,
            "label": "office storage shelf",
            "category": "prop",
            "position_hint": "southeast corner near entrance zone",
            "base_layer_decision": "base_persistent_fixture",
            "render_role": "not_applicable",
            "top_down_legibility": "not_applicable"
          }
        ],
        "transient_markers_to_describe": [
          {
            "number": 12,
            "label": "unusually dark CCTV footage on screens",
            "category": "prop",
            "position_hint": "inside number 5 monitor bank only, not in the physical room",
            "base_layer_decision": "state_overlay_plot_cue",
            "render_role": "not_applicable",
            "top_down_legibility": "not_applicable"
          },
          {
            "number": 13,
            "label": "anxious observer cluster",
            "category": "prop",
            "position_hint": "standing in number 8 visitor observation area behind the seated staff",
            "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,
          8
        ],
        "dominant_target_unit_marker_number": null,
        "clean_background_expected": false,
        "diagnostics": [
          "multiple base_structural_unit markers in use_numbered_elements ([1, 2, 8]); dominant_target_unit_marker_number left empty (W19B-1 lock — no lexical disambiguation)"
        ]
      },
      "L13B03": {
        "bg_id": "L13B03",
        "fp_id": "fp_police_office_main",
        "use_numbered_elements": [
          1,
          2,
          3,
          4,
          5,
          6,
          7,
          8,
          9,
          10,
          11,
          12,
          13,
          14,
          15,
          16,
          21
        ],
        "ignore_numbered_elements": [
          17,
          18,
          19,
          20
        ],
        "base_markers_to_reference": [
          {
            "number": 1,
            "label": "shared desk zone",
            "category": "area",
            "position_hint": "central open office area with clustered detective desks",
            "base_layer_decision": "base_structural_unit",
            "render_role": "not_applicable",
            "top_down_legibility": "not_applicable"
          },
          {
            "number": 2,
            "label": "duty desk alcove",
            "category": "area",
            "position_hint": "rear-right quieter workstation zone near monitor equipment",
            "base_layer_decision": "base_structural_unit",
            "render_role": "not_applicable",
            "top_down_legibility": "not_applicable"
          },
          {
            "number": 3,
            "label": "service equipment zone",
            "category": "area",
            "position_hint": "left-side strip with storage, copier, board, and coffee station",
            "base_layer_decision": "base_structural_unit",
            "render_role": "not_applicable",
            "top_down_legibility": "not_applicable"
          },
          {
            "number": 4,
            "label": "threshold and exit path zone",
            "category": "area",
            "position_hint": "front corridor-facing entry strip continuing toward internal exit",
            "base_layer_decision": "base_structural_unit",
            "render_role": "not_applicable",
            "top_down_legibility": "not_applicable"
          },
          {
            "number": 5,
            "label": "main entrance door",
            "category": "opening",
            "position_hint": "front wall, slightly left of center, opening from corridor into office",
            "base_layer_decision": "base_opening",
            "render_role": "not_applicable",
            "top_down_legibility": "not_applicable"
          },
          {
            "number": 6,
            "label": "meeting corridor exit",
            "category": "opening",
            "position_hint": "right wall near front, secondary exit path toward meeting area",
            "base_layer_decision": "base_opening",
            "render_role": "not_applicable",
            "top_down_legibility": "not_applicable"
          },
          {
            "number": 7,
            "label": "exterior window band",
            "category": "opening",
            "position_hint": "rear wall spanning behind main workstations",
            "base_layer_decision": "base_opening",
            "render_role": "not_applicable",
            "top_down_legibility": "not_applicable"
          },
          {
            "number": 8,
            "label": "main detective desk",
            "category": "furniture",
            "position_hint": "center-left of shared desk zone, chair side facing inward",
            "base_layer_decision": "base_persistent_furniture",
            "render_role": "not_applicable",
            "top_down_legibility": "not_applicable"
          },
          {
            "number": 9,
            "label": "duty detective desk",
            "category": "furniture",
            "position_hint": "rear-right duty alcove, positioned to see entrance and monitor bank",
            "base_layer_decision": "base_persistent_furniture",
            "render_role": "not_applicable",
            "top_down_legibility": "not_applicable"
          },
          {
            "number": 10,
            "label": "secondary desk cluster",
            "category": "furniture",
            "position_hint": "center and center-right of shared zone, modular detective workstations",
            "base_layer_decision": "base_persistent_furniture",
            "render_role": "not_applicable",
            "top_down_legibility": "not_applicable"
          },
          {
            "number": 11,
            "label": "visitor chair pair",
            "category": "furniture",
            "position_hint": "near main detective desk on the entry-side edge of the shared zone",
            "base_layer_decision": "base_persistent_furniture",
            "render_role": "not_applicable",
            "top_down_legibility": "not_applicable"
          },
          {
            "number": 12,
            "label": "desktop monitor bank",
            "category": "prop",
            "position_hint": "on and behind the duty detective desk, rear-right workstation area",
            "base_layer_decision": "base_persistent_fixture",
            "render_role": "not_applicable",
            "top_down_legibility": "not_applicable"
          },
          {
            "number": 13,
            "label": "filing cabinets and evidence shelves",
            "category": "furniture",
            "position_hint": "left wall within service equipment zone",
            "base_layer_decision": "base_persistent_furniture",
            "render_role": "not_applicable",
            "top_down_legibility": "not_applicable"
          },
          {
            "number": 14,
            "label": "coffee station counter",
            "category": "prop",
            "position_hint": "left-rear service zone beside storage cabinets",
            "base_layer_decision": "base_persistent_fixture",
            "render_role": "not_applicable",
            "top_down_legibility": "not_applicable"
          },
          {
            "number": 15,
            "label": "printer copier station",
            "category": "prop",
            "position_hint": "left-front service zone near entry path",
            "base_layer_decision": "base_persistent_fixture",
            "render_role": "not_applicable",
            "top_down_legibility": "not_applicable"
          },
          {
            "number": 16,
            "label": "wall notice board",
            "category": "prop",
            "position_hint": "left wall above service strip, near filing cabinets",
            "base_layer_decision": "base_persistent_fixture",
            "render_role": "not_applicable",
            "top_down_legibility": "not_applicable"
          }
        ],
        "transient_markers_to_describe": [
          {
            "number": 21,
            "label": "active phone-location request prompt",
            "category": "prop",
            "position_hint": "overlay only on number 12 duty terminal screen during night request",
            "base_layer_decision": "state_overlay_plot_cue",
            "render_role": "not_applicable",
            "top_down_legibility": "not_applicable"
          }
        ],
        "ignored_state_overlay_markers": [
          {
            "number": 17,
            "label": "case photos spread on main desk",
            "category": "prop",
            "position_hint": "overlay only on top of number 8 main detective desk",
            "base_layer_decision": "state_overlay_plot_cue",
            "render_role": "not_applicable",
            "top_down_legibility": "not_applicable"
          },
          {
            "number": 18,
            "label": "GPS last-location map on duty monitor",
            "category": "prop",
            "position_hint": "overlay only on number 12 monitor bank at number 9 duty desk",
            "base_layer_decision": "state_overlay_plot_cue",
            "render_role": "not_applicable",
            "top_down_legibility": "not_applicable"
          },
          {
            "number": 19,
            "label": "signature forms on duty desk",
            "category": "prop",
            "position_hint": "overlay only on number 9 duty detective desk surface",
            "base_layer_decision": "state_overlay_transient_object",
            "render_role": "not_applicable",
            "top_down_legibility": "not_applicable"
          },
          {
            "number": 20,
            "label": "note slip and pen for copied coordinates",
            "category": "prop",
            "position_hint": "overlay only between number 8 main desk and number 9 duty desk monitor area",
            "base_layer_decision": "state_overlay_transient_object",
            "render_role": "not_applicable",
            "top_down_legibility": "not_applicable"
          }
        ],
        "target_unit_marker_numbers": [
          1,
          2,
          3,
          4
        ],
        "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)"
        ]
      },
      "L13B02": {
        "bg_id": "L13B02",
        "fp_id": "fp_police_office_main",
        "use_numbered_elements": [
          1,
          2,
          3,
          4,
          5,
          6,
          7,
          8,
          9,
          10,
          11,
          12,
          13,
          14,
          15,
          16,
          19
        ],
        "ignore_numbered_elements": [
          17,
          18,
          20,
          21
        ],
        "base_markers_to_reference": [
          {
            "number": 1,
            "label": "shared desk zone",
            "category": "area",
            "position_hint": "central open office area with clustered detective desks",
            "base_layer_decision": "base_structural_unit",
            "render_role": "not_applicable",
            "top_down_legibility": "not_applicable"
          },
          {
            "number": 2,
            "label": "duty desk alcove",
            "category": "area",
            "position_hint": "rear-right quieter workstation zone near monitor equipment",
            "base_layer_decision": "base_structural_unit",
            "render_role": "not_applicable",
            "top_down_legibility": "not_applicable"
          },
          {
            "number": 3,
            "label": "service equipment zone",
            "category": "area",
            "position_hint": "left-side strip with storage, copier, board, and coffee station",
            "base_layer_decision": "base_structural_unit",
            "render_role": "not_applicable",
            "top_down_legibility": "not_applicable"
          },
          {
            "number": 4,
            "label": "threshold and exit path zone",
            "category": "area",
            "position_hint": "front corridor-facing entry strip continuing toward internal exit",
            "base_layer_decision": "base_structural_unit",
            "render_role": "not_applicable",
            "top_down_legibility": "not_applicable"
          },
          {
            "number": 5,
            "label": "main entrance door",
            "category": "opening",
            "position_hint": "front wall, slightly left of center, opening from corridor into office",
            "base_layer_decision": "base_opening",
            "render_role": "not_applicable",
            "top_down_legibility": "not_applicable"
          },
          {
            "number": 6,
            "label": "meeting corridor exit",
            "category": "opening",
            "position_hint": "right wall near front, secondary exit path toward meeting area",
            "base_layer_decision": "base_opening",
            "render_role": "not_applicable",
            "top_down_legibility": "not_applicable"
          },
          {
            "number": 7,
            "label": "exterior window band",
            "category": "opening",
            "position_hint": "rear wall spanning behind main workstations",
            "base_layer_decision": "base_opening",
            "render_role": "not_applicable",
            "top_down_legibility": "not_applicable"
          },
          {
            "number": 8,
            "label": "main detective desk",
            "category": "furniture",
            "position_hint": "center-left of shared desk zone, chair side facing inward",
            "base_layer_decision": "base_persistent_furniture",
            "render_role": "not_applicable",
            "top_down_legibility": "not_applicable"
          },
          {
            "number": 9,
            "label": "duty detective desk",
            "category": "furniture",
            "position_hint": "rear-right duty alcove, positioned to see entrance and monitor bank",
            "base_layer_decision": "base_persistent_furniture",
            "render_role": "not_applicable",
            "top_down_legibility": "not_applicable"
          },
          {
            "number": 10,
            "label": "secondary desk cluster",
            "category": "furniture",
            "position_hint": "center and center-right of shared zone, modular detective workstations",
            "base_layer_decision": "base_persistent_furniture",
            "render_role": "not_applicable",
            "top_down_legibility": "not_applicable"
          },
          {
            "number": 11,
            "label": "visitor chair pair",
            "category": "furniture",
            "position_hint": "near main detective desk on the entry-side edge of the shared zone",
            "base_layer_decision": "base_persistent_furniture",
            "render_role": "not_applicable",
            "top_down_legibility": "not_applicable"
          },
          {
            "number": 12,
            "label": "desktop monitor bank",
            "category": "prop",
            "position_hint": "on and behind the duty detective desk, rear-right workstation area",
            "base_layer_decision": "base_persistent_fixture",
            "render_role": "not_applicable",
            "top_down_legibility": "not_applicable"
          },
          {
            "number": 13,
            "label": "filing cabinets and evidence shelves",
            "category": "furniture",
            "position_hint": "left wall within service equipment zone",
            "base_layer_decision": "base_persistent_furniture",
            "render_role": "not_applicable",
            "top_down_legibility": "not_applicable"
          },
          {
            "number": 14,
            "label": "coffee station counter",
            "category": "prop",
            "position_hint": "left-rear service zone beside storage cabinets",
            "base_layer_decision": "base_persistent_fixture",
            "render_role": "not_applicable",
            "top_down_legibility": "not_applicable"
          },
          {
            "number": 15,
            "label": "printer copier station",
            "category": "prop",
            "position_hint": "left-front service zone near entry path",
            "base_layer_decision": "base_persistent_fixture",
            "render_role": "not_applicable",
            "top_down_legibility": "not_applicable"
          },
          {
            "number": 16,
            "label": "wall notice board",
            "category": "prop",
            "position_hint": "left wall above service strip, near filing cabinets",
            "base_layer_decision": "base_persistent_fixture",
            "render_role": "not_applicable",
            "top_down_legibility": "not_applicable"
          }
        ],
        "transient_markers_to_describe": [
          {
            "number": 19,
            "label": "signature forms on duty desk",
            "category": "prop",
            "position_hint": "overlay only on number 9 duty detective desk surface",
            "base_layer_decision": "state_overlay_transient_object",
            "render_role": "not_applicable",
            "top_down_legibility": "not_applicable"
          }
        ],
        "ignored_state_overlay_markers": [
          {
            "number": 17,
            "label": "case photos spread on main desk",
            "category": "prop",
            "position_hint": "overlay only on top of number 8 main detective desk",
            "base_layer_decision": "state_overlay_plot_cue",
            "render_role": "not_applicable",
            "top_down_legibility": "not_applicable"
          },
          {
            "number": 18,
            "label": "GPS last-location map on duty monitor",
            "category": "prop",
            "position_hint": "overlay only on number 12 monitor bank at number 9 duty desk",
            "base_layer_decision": "state_overlay_plot_cue",
            "render_role": "not_applicable",
            "top_down_legibility": "not_applicable"
          },
          {
            "number": 20,
            "label": "note slip and pen for copied coordinates",
            "category": "prop",
            "position_hint": "overlay only between number 8 main desk and number 9 duty desk monitor area",
            "base_layer_decision": "state_overlay_transient_object",
            "render_role": "not_applicable",
            "top_down_legibility": "not_applicable"
          },
          {
            "number": 21,
            "label": "active phone-location request prompt",
            "category": "prop",
            "position_hint": "overlay only on number 12 duty terminal screen during night request",
            "base_layer_decision": "state_overlay_plot_cue",
            "render_role": "not_applicable",
            "top_down_legibility": "not_applicable"
          }
        ],
        "target_unit_marker_numbers": [
          1,
          2,
          3,
          4
        ],
        "dominant_target_unit_marker_number": null,
        "clean_background_expected": false,
        "diagnostics": [
          "multiple base_structural_unit markers in use_numbered_elements ([1, 2, 3, 4]); dominant_target_unit_marker_number left empty (W19B-1 lock — no lexical disambiguation)"
        ]
      },
      "L13B01": {
        "bg_id": "L13B01",
        "fp_id": "fp_police_office_main",
        "use_numbered_elements": [
          1,
          2,
          3,
          4,
          5,
          6,
          7,
          8,
          9,
          10,
          11,
          12,
          13,
          14,
          15,
          16,
          17,
          18,
          20
        ],
        "ignore_numbered_elements": [
          19,
          21
        ],
        "base_markers_to_reference": [
          {
            "number": 1,
            "label": "shared desk zone",
            "category": "area",
            "position_hint": "central open office area with clustered detective desks",
            "base_layer_decision": "base_structural_unit",
            "render_role": "not_applicable",
            "top_down_legibility": "not_applicable"
          },
          {
            "number": 2,
            "label": "duty desk alcove",
            "category": "area",
            "position_hint": "rear-right quieter workstation zone near monitor equipment",
            "base_layer_decision": "base_structural_unit",
            "render_role": "not_applicable",
            "top_down_legibility": "not_applicable"
          },
          {
            "number": 3,
            "label": "service equipment zone",
            "category": "area",
            "position_hint": "left-side strip with storage, copier, board, and coffee station",
            "base_layer_decision": "base_structural_unit",
            "render_role": "not_applicable",
            "top_down_legibility": "not_applicable"
          },
          {
            "number": 4,
            "label": "threshold and exit path zone",
            "category": "area",
            "position_hint": "front corridor-facing entry strip continuing toward internal exit",
            "base_layer_decision": "base_structural_unit",
            "render_role": "not_applicable",
            "top_down_legibility": "not_applicable"
          },
          {
            "number": 5,
            "label": "main entrance door",
            "category": "opening",
            "position_hint": "front wall, slightly left of center, opening from corridor into office",
            "base_layer_decision": "base_opening",
            "render_role": "not_applicable",
            "top_down_legibility": "not_applicable"
          },
          {
            "number": 6,
            "label": "meeting corridor exit",
            "category": "opening",
            "position_hint": "right wall near front, secondary exit path toward meeting area",
            "base_layer_decision": "base_opening",
            "render_role": "not_applicable",
            "top_down_legibility": "not_applicable"
          },
          {
            "number": 7,
            "label": "exterior window band",
            "category": "opening",
            "position_hint": "rear wall spanning behind main workstations",
            "base_layer_decision": "base_opening",
            "render_role": "not_applicable",
            "top_down_legibility": "not_applicable"
          },
          {
            "number": 8,
            "label": "main detective desk",
            "category": "furniture",
            "position_hint": "center-left of shared desk zone, chair side facing inward",
            "base_layer_decision": "base_persistent_furniture",
            "render_role": "not_applicable",
            "top_down_legibility": "not_applicable"
          },
          {
            "number": 9,
            "label": "duty detective desk",
            "category": "furniture",
            "position_hint": "rear-right duty alcove, positioned to see entrance and monitor bank",
            "base_layer_decision": "base_persistent_furniture",
            "render_role": "not_applicable",
            "top_down_legibility": "not_applicable"
          },
          {
            "number": 10,
            "label": "secondary desk cluster",
            "category": "furniture",
            "position_hint": "center and center-right of shared zone, modular detective workstations",
            "base_layer_decision": "base_persistent_furniture",
            "render_role": "not_applicable",
            "top_down_legibility": "not_applicable"
          },
          {
            "number": 11,
            "label": "visitor chair pair",
            "category": "furniture",
            "position_hint": "near main detective desk on the entry-side edge of the shared zone",
            "base_layer_decision": "base_persistent_furniture",
            "render_role": "not_applicable",
            "top_down_legibility": "not_applicable"
          },
          {
            "number": 12,
            "label": "desktop monitor bank",
            "category": "prop",
            "position_hint": "on and behind the duty detective desk, rear-right workstation area",
            "base_layer_decision": "base_persistent_fixture",
            "render_role": "not_applicable",
            "top_down_legibility": "not_applicable"
          },
          {
            "number": 13,
            "label": "filing cabinets and evidence shelves",
            "category": "furniture",
            "position_hint": "left wall within service equipment zone",
            "base_layer_decision": "base_persistent_furniture",
            "render_role": "not_applicable",
            "top_down_legibility": "not_applicable"
          },
          {
            "number": 14,
            "label": "coffee station counter",
            "category": "prop",
            "position_hint": "left-rear service zone beside storage cabinets",
            "base_layer_decision": "base_persistent_fixture",
            "render_role": "not_applicable",
            "top_down_legibility": "not_applicable"
          },
          {
            "number": 15,
            "label": "printer copier station",
            "category": "prop",
            "position_hint": "left-front service zone near entry path",
            "base_layer_decision": "base_persistent_fixture",
            "render_role": "not_applicable",
            "top_down_legibility": "not_applicable"
          },
          {
            "number": 16,
            "label": "wall notice board",
            "category": "prop",
            "position_hint": "left wall above service strip, near filing cabinets",
            "base_layer_decision": "base_persistent_fixture",
            "render_role": "not_applicable",
            "top_down_legibility": "not_applicable"
          }
        ],
        "transient_markers_to_describe": [
          {
            "number": 17,
            "label": "case photos spread on main desk",
            "category": "prop",
            "position_hint": "overlay only on top of number 8 main detective desk",
            "base_layer_decision": "state_overlay_plot_cue",
            "render_role": "not_applicable",
            "top_down_legibility": "not_applicable"
          },
          {
            "number": 18,
            "label": "GPS last-location map on duty monitor",
            "category": "prop",
            "position_hint": "overlay only on number 12 monitor bank at number 9 duty desk",
            "base_layer_decision": "state_overlay_plot_cue",
            "render_role": "not_applicable",
            "top_down_legibility": "not_applicable"
          },
          {
            "number": 20,
            "label": "note slip and pen for copied coordinates",
            "category": "prop",
            "position_hint": "overlay only between number 8 main desk and number 9 duty desk monitor area",
            "base_layer_decision": "state_overlay_transient_object",
            "render_role": "not_applicable",
            "top_down_legibility": "not_applicable"
          }
        ],
        "ignored_state_overlay_markers": [
          {
            "number": 19,
            "label": "signature forms on duty desk",
            "category": "prop",
            "position_hint": "overlay only on number 9 duty detective desk surface",
            "base_layer_decision": "state_overlay_transient_object",
            "render_role": "not_applicable",
            "top_down_legibility": "not_applicable"
          },
          {
            "number": 21,
            "label": "active phone-location request prompt",
            "category": "prop",
            "position_hint": "overlay only on number 12 duty terminal screen during night request",
            "base_layer_decision": "state_overlay_plot_cue",
            "render_role": "not_applicable",
            "top_down_legibility": "not_applicable"
          }
        ],
        "target_unit_marker_numbers": [
          1,
          2,
          3,
          4
        ],
        "dominant_target_unit_marker_number": null,
        "clean_background_expected": false,
        "diagnostics": [
          "multiple base_structural_unit markers in use_numbered_elements ([1, 2, 3, 4]); dominant_target_unit_marker_number left empty (W19B-1 lock — no lexical disambiguation)"
        ]
      },
      "L14B01": {
        "bg_id": "L14B01",
        "fp_id": "fp_police_station_exterior_main",
        "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": "station building frontage",
            "category": "area",
            "position_hint": "north half of plan, rectangular building mass facing the sidewalk",
            "base_layer_decision": "base_structural_unit",
            "render_role": "not_applicable",
            "top_down_legibility": "not_applicable"
          },
          {
            "number": 2,
            "label": "recessed entrance threshold",
            "category": "area",
            "position_hint": "center of north frontage, shallow inset zone just outside the main doors",
            "base_layer_decision": "base_structural_unit",
            "render_role": "not_applicable",
            "top_down_legibility": "not_applicable"
          },
          {
            "number": 3,
            "label": "main double entrance doors",
            "category": "opening",
            "position_hint": "center of building frontage, opening from threshold into station interior",
            "base_layer_decision": "base_opening",
            "render_role": "not_applicable",
            "top_down_legibility": "not_applicable"
          },
          {
            "number": 4,
            "label": "front window band",
            "category": "opening",
            "position_hint": "north wall frontage, extending to one side of the entrance",
            "base_layer_decision": "base_opening",
            "render_role": "not_applicable",
            "top_down_legibility": "not_applicable"
          },
          {
            "number": 5,
            "label": "public sidewalk forecourt",
            "category": "area",
            "position_hint": "central exterior paved area between building frontage and curb",
            "base_layer_decision": "base_structural_unit",
            "render_role": "not_applicable",
            "top_down_legibility": "not_applicable"
          },
          {
            "number": 6,
            "label": "bicycle parking bay",
            "category": "area",
            "position_hint": "east side of forecourt, adjacent to the entrance threshold",
            "base_layer_decision": "base_structural_unit",
            "render_role": "not_applicable",
            "top_down_legibility": "not_applicable"
          },
          {
            "number": 7,
            "label": "fixed bicycle rack",
            "category": "prop",
            "position_hint": "inside bicycle parking bay, parallel to the station frontage",
            "base_layer_decision": "base_persistent_fixture",
            "render_role": "not_applicable",
            "top_down_legibility": "not_applicable"
          },
          {
            "number": 8,
            "label": "curb and street edge",
            "category": "area",
            "position_hint": "south edge of plan, bordering the sidewalk forecourt",
            "base_layer_decision": "base_structural_unit",
            "render_role": "not_applicable",
            "top_down_legibility": "not_applicable"
          },
          {
            "number": 9,
            "label": "driveway opening",
            "category": "opening",
            "position_hint": "southwest edge of frontage, gap from forecourt toward street departure route",
            "base_layer_decision": "base_opening",
            "render_role": "not_applicable",
            "top_down_legibility": "not_applicable"
          },
          {
            "number": 10,
            "label": "wall mounted CCTV camera",
            "category": "prop",
            "position_hint": "above or beside the main entrance on the exterior frontage wall",
            "base_layer_decision": "base_persistent_fixture",
            "render_role": "not_applicable",
            "top_down_legibility": "not_applicable"
          }
        ],
        "transient_markers_to_describe": [
          {
            "number": 11,
            "label": "bicycle being taken from parking",
            "category": "prop",
            "position_hint": "starts at bicycle parking bay near the fixed rack, then leaves toward the street",
            "base_layer_decision": "state_overlay_transient_object",
            "render_role": "not_applicable",
            "top_down_legibility": "not_applicable"
          },
          {
            "number": 12,
            "label": "urgent bicycle departure path",
            "category": "prop",
            "position_hint": "from bicycle parking bay across the forecourt toward the curb and driveway opening",
            "base_layer_decision": "state_overlay_plot_cue",
            "render_role": "not_applicable",
            "top_down_legibility": "not_applicable"
          }
        ],
        "ignored_state_overlay_markers": [],
        "target_unit_marker_numbers": [
          1,
          2,
          5,
          6,
          8
        ],
        "dominant_target_unit_marker_number": null,
        "clean_background_expected": false,
        "diagnostics": [
          "multiple base_structural_unit markers in use_numbered_elements ([1, 2, 5, 6, 8]); dominant_target_unit_marker_number left empty (W19B-1 lock — no lexical disambiguation)"
        ]
      },
      "L19B01": {
        "bg_id": "L19B01",
        "fp_id": "fp_l19_deck_main",
        "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": "aft working deck",
            "category": "area",
            "position_hint": "large open deck area in the aft half of the boat",
            "base_layer_decision": "base_structural_unit",
            "render_role": "not_applicable",
            "top_down_legibility": "not_applicable"
          },
          {
            "number": 2,
            "label": "forward wheelhouse cabin",
            "category": "area",
            "position_hint": "forward center of the boat, occupying the bow-side cabin footprint",
            "base_layer_decision": "base_structural_unit",
            "render_role": "not_applicable",
            "top_down_legibility": "not_applicable"
          },
          {
            "number": 3,
            "label": "port side passage",
            "category": "area",
            "position_hint": "narrow walkway along the left side of the wheelhouse",
            "base_layer_decision": "base_structural_unit",
            "render_role": "not_applicable",
            "top_down_legibility": "not_applicable"
          },
          {
            "number": 4,
            "label": "starboard side passage",
            "category": "area",
            "position_hint": "narrow walkway along the right side of the wheelhouse",
            "base_layer_decision": "base_structural_unit",
            "render_role": "not_applicable",
            "top_down_legibility": "not_applicable"
          },
          {
            "number": 5,
            "label": "aft transom rail",
            "category": "prop",
            "position_hint": "rear edge of the aft working deck",
            "base_layer_decision": "base_persistent_fixture",
            "render_role": "not_applicable",
            "top_down_legibility": "not_applicable"
          },
          {
            "number": 6,
            "label": "wheelhouse aft door",
            "category": "opening",
            "position_hint": "center of the aft wall of the wheelhouse, opening onto the deck",
            "base_layer_decision": "base_opening",
            "render_role": "not_applicable",
            "top_down_legibility": "not_applicable"
          },
          {
            "number": 7,
            "label": "front wheelhouse windows",
            "category": "opening",
            "position_hint": "forward wall of the wheelhouse cabin",
            "base_layer_decision": "base_opening",
            "render_role": "not_applicable",
            "top_down_legibility": "not_applicable"
          },
          {
            "number": 8,
            "label": "side wheelhouse windows",
            "category": "opening",
            "position_hint": "left and right side walls of the wheelhouse cabin",
            "base_layer_decision": "base_opening",
            "render_role": "not_applicable",
            "top_down_legibility": "not_applicable"
          },
          {
            "number": 9,
            "label": "low bulwark rail",
            "category": "prop",
            "position_hint": "continuous low rail around the outer deck perimeter",
            "base_layer_decision": "base_persistent_fixture",
            "render_role": "not_applicable",
            "top_down_legibility": "not_applicable"
          },
          {
            "number": 10,
            "label": "central fish hold hatch",
            "category": "prop",
            "position_hint": "center of the aft working deck floor",
            "base_layer_decision": "base_persistent_fixture",
            "render_role": "not_applicable",
            "top_down_legibility": "not_applicable"
          },
          {
            "number": 11,
            "label": "built-in net bin",
            "category": "prop",
            "position_hint": "port aft corner of the working deck",
            "base_layer_decision": "base_persistent_fixture",
            "render_role": "not_applicable",
            "top_down_legibility": "not_applicable"
          },
          {
            "number": 12,
            "label": "small deck winch",
            "category": "prop",
            "position_hint": "starboard mid-deck near the working area",
            "base_layer_decision": "base_persistent_fixture",
            "render_role": "not_applicable",
            "top_down_legibility": "not_applicable"
          },
          {
            "number": 13,
            "label": "paired deck cleats",
            "category": "prop",
            "position_hint": "near both side rails along the aft working deck",
            "base_layer_decision": "base_persistent_fixture",
            "render_role": "not_applicable",
            "top_down_legibility": "not_applicable"
          },
          {
            "number": 14,
            "label": "compact helm console",
            "category": "prop",
            "position_hint": "inside the forward wheelhouse, just beyond the aft door",
            "base_layer_decision": "base_persistent_fixture",
            "render_role": "not_applicable",
            "top_down_legibility": "not_applicable"
          }
        ],
        "transient_markers_to_describe": [
          {
            "number": 15,
            "label": "map and photo confrontation items",
            "category": "prop",
            "position_hint": "temporarily held or shown over the aft working deck seating/confrontation area",
            "base_layer_decision": "state_overlay_transient_object",
            "render_role": "not_applicable",
            "top_down_legibility": "not_applicable"
          },
          {
            "number": 16,
            "label": "sudden rush toward wheelhouse",
            "category": "prop",
            "position_hint": "temporary action path from the aft working deck toward the wheelhouse aft door",
            "base_layer_decision": "state_overlay_plot_cue",
            "render_role": "not_applicable",
            "top_down_legibility": "not_applicable"
          }
        ],
        "ignored_state_overlay_markers": [],
        "target_unit_marker_numbers": [
          1,
          2,
          3,
          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)"
        ]
      },
      "L20B01": {
        "bg_id": "L20B01",
        "fp_id": "fp_l20_wheelhouse_main",
        "use_numbered_elements": [
          1,
          2,
          3,
          4,
          5,
          6,
          7,
          8,
          9,
          10,
          11,
          12,
          13,
          14,
          15,
          16,
          17,
          18,
          19,
          20
        ],
        "ignore_numbered_elements": [],
        "base_markers_to_reference": [
          {
            "number": 1,
            "label": "compact wheelhouse interior",
            "category": "area",
            "position_hint": "entire enclosed cabin footprint",
            "base_layer_decision": "base_structural_unit",
            "render_role": "not_applicable",
            "top_down_legibility": "not_applicable"
          },
          {
            "number": 2,
            "label": "helm control console",
            "category": "prop",
            "position_hint": "forward wall, centered slightly starboard",
            "base_layer_decision": "base_persistent_fixture",
            "render_role": "not_applicable",
            "top_down_legibility": "not_applicable"
          },
          {
            "number": 3,
            "label": "mounted steering wheel",
            "category": "prop",
            "position_hint": "on forward helm console, center-facing aft",
            "base_layer_decision": "base_persistent_fixture",
            "render_role": "not_applicable",
            "top_down_legibility": "not_applicable"
          },
          {
            "number": 4,
            "label": "digital navigation display cluster",
            "category": "prop",
            "position_hint": "upper forward console above steering wheel",
            "base_layer_decision": "base_persistent_fixture",
            "render_role": "not_applicable",
            "top_down_legibility": "not_applicable"
          },
          {
            "number": 5,
            "label": "throttle and engine controls",
            "category": "prop",
            "position_hint": "starboard side of helm console within arm reach of seat",
            "base_layer_decision": "base_persistent_fixture",
            "render_role": "not_applicable",
            "top_down_legibility": "not_applicable"
          },
          {
            "number": 6,
            "label": "forward windshield windows",
            "category": "opening",
            "position_hint": "across forward wall above helm console",
            "base_layer_decision": "base_opening",
            "render_role": "not_applicable",
            "top_down_legibility": "not_applicable"
          },
          {
            "number": 7,
            "label": "port side window",
            "category": "opening",
            "position_hint": "left side wall near forward half of wheelhouse",
            "base_layer_decision": "base_opening",
            "render_role": "not_applicable",
            "top_down_legibility": "not_applicable"
          },
          {
            "number": 8,
            "label": "starboard side window",
            "category": "opening",
            "position_hint": "right side wall near forward half of wheelhouse",
            "base_layer_decision": "base_opening",
            "render_role": "not_applicable",
            "top_down_legibility": "not_applicable"
          },
          {
            "number": 9,
            "label": "aft deck door",
            "category": "opening",
            "position_hint": "aft wall, slightly port of center, opening to deck",
            "base_layer_decision": "base_opening",
            "render_role": "not_applicable",
            "top_down_legibility": "not_applicable"
          },
          {
            "number": 10,
            "label": "helm seat",
            "category": "furniture",
            "position_hint": "just aft of helm console, aligned with steering wheel",
            "base_layer_decision": "base_persistent_furniture",
            "render_role": "not_applicable",
            "top_down_legibility": "not_applicable"
          },
          {
            "number": 11,
            "label": "narrow bench storage locker",
            "category": "furniture",
            "position_hint": "port wall along aft half of wheelhouse",
            "base_layer_decision": "base_persistent_furniture",
            "render_role": "not_applicable",
            "top_down_legibility": "not_applicable"
          },
          {
            "number": 12,
            "label": "small chart shelf",
            "category": "furniture",
            "position_hint": "port-forward corner beside the console",
            "base_layer_decision": "base_persistent_furniture",
            "render_role": "not_applicable",
            "top_down_legibility": "not_applicable"
          },
          {
            "number": 13,
            "label": "overhead electronics cabinet",
            "category": "prop",
            "position_hint": "forward starboard corner above control area, shown as a built-in cabinet footprint",
            "base_layer_decision": "base_persistent_fixture",
            "render_role": "not_applicable",
            "top_down_legibility": "not_applicable"
          },
          {
            "number": 14,
            "label": "aft threshold zone",
            "category": "area",
            "position_hint": "inside aft entry area around deck door",
            "base_layer_decision": "base_structural_unit",
            "render_role": "not_applicable",
            "top_down_legibility": "not_applicable"
          },
          {
            "number": 15,
            "label": "forward control zone",
            "category": "area",
            "position_hint": "forward third of cabin around helm and displays",
            "base_layer_decision": "base_structural_unit",
            "render_role": "not_applicable",
            "top_down_legibility": "not_applicable"
          },
          {
            "number": 16,
            "label": "central standing zone",
            "category": "area",
            "position_hint": "narrow central aisle between aft door and helm seat",
            "base_layer_decision": "base_structural_unit",
            "render_role": "not_applicable",
            "top_down_legibility": "not_applicable"
          }
        ],
        "transient_markers_to_describe": [
          {
            "number": 17,
            "label": "old printed photo evidence",
            "category": "prop",
            "position_hint": "temporarily placed on or held above the small chart shelf near number 12",
            "base_layer_decision": "state_overlay_transient_object",
            "render_role": "not_applicable",
            "top_down_legibility": "not_applicable"
          },
          {
            "number": 18,
            "label": "many circular marks across interior surfaces",
            "category": "prop",
            "position_hint": "overlay cue affecting visible wall, window, and console surfaces in the wheelhouse view",
            "base_layer_decision": "state_overlay_plot_cue",
            "render_role": "not_applicable",
            "top_down_legibility": "not_applicable"
          },
          {
            "number": 19,
            "label": "ominous red circle motif",
            "category": "prop",
            "position_hint": "overlay cue near the forward console and windshield sightline",
            "base_layer_decision": "state_overlay_plot_cue",
            "render_role": "not_applicable",
            "top_down_legibility": "not_applicable"
          },
          {
            "number": 20,
            "label": "collapse position cue",
            "category": "prop",
            "position_hint": "central standing zone near number 16, between the aft door and helm seat",
            "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,
          14,
          15,
          16
        ],
        "dominant_target_unit_marker_number": null,
        "clean_background_expected": false,
        "diagnostics": [
          "multiple base_structural_unit markers in use_numbered_elements ([1, 14, 15, 16]); dominant_target_unit_marker_number left empty (W19B-1 lock — no lexical disambiguation)"
        ]
      }
    }
  },
  "step_id": "floor_plan_overlay_payload",
  "run_id": "992b3ef1-9f4f-40b7-a5ff-5252be78c014",
  "resolved_model": "gpt",
  "updated_at": "2026-06-28T12:28:39.765708+00:00",
  "project_config_snapshot": {}
}