{
  "status": "completed",
  "applicable_count": 1,
  "completed_count": 1,
  "failed_count": 0,
  "schema_version": 1,
  "config_hash": "5d2891ceb277be8d",
  "data": {
    "overlays": {
      "L01B02": {
        "bg_id": "L01B02",
        "fp_id": "fp_l01_reed_field",
        "use_numbered_elements": [
          1,
          2,
          3,
          4,
          5,
          6,
          7
        ],
        "ignore_numbered_elements": [],
        "base_markers_to_reference": [
          {
            "number": 1,
            "label": "winter reed field",
            "category": "area",
            "position_hint": "large exterior area occupying the south, west, and central portions of the plan",
            "base_layer_decision": "base_structural_unit",
            "render_role": "not_applicable",
            "top_down_legibility": "not_applicable"
          },
          {
            "number": 2,
            "label": "wooden salt warehouse",
            "category": "area",
            "position_hint": "compact rectangular single-room shed at the north-northeast edge of the reed field",
            "base_layer_decision": "base_structural_unit",
            "render_role": "not_applicable",
            "top_down_legibility": "not_applicable"
          },
          {
            "number": 3,
            "label": "warehouse entrance door",
            "category": "opening",
            "position_hint": "broad single-leaf door centered on the south-facing wall of the warehouse",
            "base_layer_decision": "base_opening",
            "render_role": "not_applicable",
            "top_down_legibility": "not_applicable"
          },
          {
            "number": 4,
            "label": "entrance threshold",
            "category": "area",
            "position_hint": "small open approach area directly south of the warehouse entrance",
            "base_layer_decision": "base_structural_unit",
            "render_role": "not_applicable",
            "top_down_legibility": "not_applicable"
          }
        ],
        "transient_markers_to_describe": [
          {
            "number": 5,
            "label": "survivor flight path",
            "category": "prop",
            "position_hint": "south-to-north route through the central reeds, converging on the entrance threshold; do not draw on the base plan",
            "base_layer_decision": "state_overlay_plot_cue",
            "render_role": "not_applicable",
            "top_down_legibility": "not_applicable"
          },
          {
            "number": 6,
            "label": "pursuer formation",
            "category": "prop",
            "position_hint": "broad line advancing through the southern reeds approximately 20 m behind the survivors; do not draw on the base plan",
            "base_layer_decision": "state_overlay_transient_object",
            "render_role": "not_applicable",
            "top_down_legibility": "not_applicable"
          },
          {
            "number": 7,
            "label": "rifle fire lanes",
            "category": "prop",
            "position_hint": "several converging trajectories from the southern pursuer line toward the central flight path; do not draw on the base plan",
            "base_layer_decision": "state_overlay_plot_cue",
            "render_role": "not_applicable",
            "top_down_legibility": "not_applicable"
          }
        ],
        "ignored_state_overlay_markers": [],
        "target_unit_marker_numbers": [
          1,
          2,
          4
        ],
        "dominant_target_unit_marker_number": null,
        "clean_background_expected": false,
        "diagnostics": [
          "multiple base_structural_unit markers in use_numbered_elements ([1, 2, 4]); dominant_target_unit_marker_number left empty (W19B-1 lock — no lexical disambiguation)"
        ]
      },
      "L01B01": {
        "bg_id": "L01B01",
        "fp_id": "fp_l01_reed_field",
        "use_numbered_elements": [
          1,
          2,
          3,
          4,
          5
        ],
        "ignore_numbered_elements": [
          6,
          7
        ],
        "base_markers_to_reference": [
          {
            "number": 1,
            "label": "winter reed field",
            "category": "area",
            "position_hint": "large exterior area occupying the south, west, and central portions of the plan",
            "base_layer_decision": "base_structural_unit",
            "render_role": "not_applicable",
            "top_down_legibility": "not_applicable"
          },
          {
            "number": 2,
            "label": "wooden salt warehouse",
            "category": "area",
            "position_hint": "compact rectangular single-room shed at the north-northeast edge of the reed field",
            "base_layer_decision": "base_structural_unit",
            "render_role": "not_applicable",
            "top_down_legibility": "not_applicable"
          },
          {
            "number": 3,
            "label": "warehouse entrance door",
            "category": "opening",
            "position_hint": "broad single-leaf door centered on the south-facing wall of the warehouse",
            "base_layer_decision": "base_opening",
            "render_role": "not_applicable",
            "top_down_legibility": "not_applicable"
          },
          {
            "number": 4,
            "label": "entrance threshold",
            "category": "area",
            "position_hint": "small open approach area directly south of the warehouse entrance",
            "base_layer_decision": "base_structural_unit",
            "render_role": "not_applicable",
            "top_down_legibility": "not_applicable"
          }
        ],
        "transient_markers_to_describe": [
          {
            "number": 5,
            "label": "survivor flight path",
            "category": "prop",
            "position_hint": "south-to-north route through the central reeds, converging on the entrance threshold; do not draw on the base plan",
            "base_layer_decision": "state_overlay_plot_cue",
            "render_role": "not_applicable",
            "top_down_legibility": "not_applicable"
          }
        ],
        "ignored_state_overlay_markers": [
          {
            "number": 6,
            "label": "pursuer formation",
            "category": "prop",
            "position_hint": "broad line advancing through the southern reeds approximately 20 m behind the survivors; do not draw on the base plan",
            "base_layer_decision": "state_overlay_transient_object",
            "render_role": "not_applicable",
            "top_down_legibility": "not_applicable"
          },
          {
            "number": 7,
            "label": "rifle fire lanes",
            "category": "prop",
            "position_hint": "several converging trajectories from the southern pursuer line toward the central flight path; do not draw on the base plan",
            "base_layer_decision": "state_overlay_plot_cue",
            "render_role": "not_applicable",
            "top_down_legibility": "not_applicable"
          }
        ],
        "target_unit_marker_numbers": [
          1,
          2,
          4
        ],
        "dominant_target_unit_marker_number": null,
        "clean_background_expected": false,
        "diagnostics": [
          "multiple base_structural_unit markers in use_numbered_elements ([1, 2, 4]); dominant_target_unit_marker_number left empty (W19B-1 lock — no lexical disambiguation)"
        ]
      },
      "L02B01": {
        "bg_id": "L02B01",
        "fp_id": "fp_l02_warehouse_interior",
        "use_numbered_elements": [
          1,
          2,
          3,
          4,
          5,
          6
        ],
        "ignore_numbered_elements": [
          7
        ],
        "base_markers_to_reference": [
          {
            "number": 1,
            "label": "main warehouse interior",
            "category": "area",
            "position_hint": "center of the rectangular single-bay warehouse",
            "base_layer_decision": "base_structural_unit",
            "render_role": "not_applicable",
            "top_down_legibility": "not_applicable"
          },
          {
            "number": 2,
            "label": "survivor holding area",
            "category": "area",
            "position_hint": "north half of the room against the rear wall",
            "base_layer_decision": "base_structural_unit",
            "render_role": "not_applicable",
            "top_down_legibility": "not_applicable"
          },
          {
            "number": 3,
            "label": "door threshold zone",
            "category": "area",
            "position_hint": "narrow strip inside the south wall doorway",
            "base_layer_decision": "base_structural_unit",
            "render_role": "not_applicable",
            "top_down_legibility": "not_applicable"
          },
          {
            "number": 4,
            "label": "hinged plank door",
            "category": "opening",
            "position_hint": "center of the south exterior wall",
            "base_layer_decision": "base_opening",
            "render_role": "not_applicable",
            "top_down_legibility": "not_applicable"
          },
          {
            "number": 5,
            "label": "rough timber wall framing",
            "category": "prop",
            "position_hint": "inner west wall, representing the persistent exposed posts and diagonal braces around the perimeter",
            "base_layer_decision": "base_persistent_fixture",
            "render_role": "not_applicable",
            "top_down_legibility": "not_applicable"
          }
        ],
        "transient_markers_to_describe": [
          {
            "number": 6,
            "label": "door open state",
            "category": "opening",
            "position_hint": "south doorway during the breach; overlay metadata only and not drawn on the floor plan",
            "base_layer_decision": "state_overlay_plot_cue",
            "render_role": "not_applicable",
            "top_down_legibility": "not_applicable"
          }
        ],
        "ignored_state_overlay_markers": [
          {
            "number": 7,
            "label": "door firmly closed state",
            "category": "opening",
            "position_hint": "south doorway after the violent interruption; overlay metadata only and not drawn on the floor plan",
            "base_layer_decision": "state_overlay_plot_cue",
            "render_role": "not_applicable",
            "top_down_legibility": "not_applicable"
          }
        ],
        "target_unit_marker_numbers": [
          1,
          2,
          3
        ],
        "dominant_target_unit_marker_number": null,
        "clean_background_expected": false,
        "diagnostics": [
          "multiple base_structural_unit markers in use_numbered_elements ([1, 2, 3]); dominant_target_unit_marker_number left empty (W19B-1 lock — no lexical disambiguation)"
        ]
      },
      "L02B02": {
        "bg_id": "L02B02",
        "fp_id": "fp_l02_warehouse_interior",
        "use_numbered_elements": [
          1,
          2,
          3,
          4,
          5,
          7
        ],
        "ignore_numbered_elements": [
          6
        ],
        "base_markers_to_reference": [
          {
            "number": 1,
            "label": "main warehouse interior",
            "category": "area",
            "position_hint": "center of the rectangular single-bay warehouse",
            "base_layer_decision": "base_structural_unit",
            "render_role": "not_applicable",
            "top_down_legibility": "not_applicable"
          },
          {
            "number": 2,
            "label": "survivor holding area",
            "category": "area",
            "position_hint": "north half of the room against the rear wall",
            "base_layer_decision": "base_structural_unit",
            "render_role": "not_applicable",
            "top_down_legibility": "not_applicable"
          },
          {
            "number": 3,
            "label": "door threshold zone",
            "category": "area",
            "position_hint": "narrow strip inside the south wall doorway",
            "base_layer_decision": "base_structural_unit",
            "render_role": "not_applicable",
            "top_down_legibility": "not_applicable"
          },
          {
            "number": 4,
            "label": "hinged plank door",
            "category": "opening",
            "position_hint": "center of the south exterior wall",
            "base_layer_decision": "base_opening",
            "render_role": "not_applicable",
            "top_down_legibility": "not_applicable"
          },
          {
            "number": 5,
            "label": "rough timber wall framing",
            "category": "prop",
            "position_hint": "inner west wall, representing the persistent exposed posts and diagonal braces around the perimeter",
            "base_layer_decision": "base_persistent_fixture",
            "render_role": "not_applicable",
            "top_down_legibility": "not_applicable"
          }
        ],
        "transient_markers_to_describe": [
          {
            "number": 7,
            "label": "door firmly closed state",
            "category": "opening",
            "position_hint": "south doorway after the violent interruption; overlay metadata only and not drawn on the floor plan",
            "base_layer_decision": "state_overlay_plot_cue",
            "render_role": "not_applicable",
            "top_down_legibility": "not_applicable"
          }
        ],
        "ignored_state_overlay_markers": [
          {
            "number": 6,
            "label": "door open state",
            "category": "opening",
            "position_hint": "south doorway during the breach; overlay metadata only and not drawn on the floor plan",
            "base_layer_decision": "state_overlay_plot_cue",
            "render_role": "not_applicable",
            "top_down_legibility": "not_applicable"
          }
        ],
        "target_unit_marker_numbers": [
          1,
          2,
          3
        ],
        "dominant_target_unit_marker_number": null,
        "clean_background_expected": false,
        "diagnostics": [
          "multiple base_structural_unit markers in use_numbered_elements ([1, 2, 3]); dominant_target_unit_marker_number left empty (W19B-1 lock — no lexical disambiguation)"
        ]
      },
      "L03B01": {
        "bg_id": "L03B01",
        "fp_id": "fp_l03_main_staging",
        "use_numbered_elements": [
          1,
          2,
          3,
          4,
          17,
          18,
          19,
          20,
          22
        ],
        "ignore_numbered_elements": [
          21
        ],
        "base_markers_to_reference": [
          {
            "number": 1,
            "label": "plank warehouse interior",
            "category": "area",
            "position_hint": "western half of the historical module, enclosed by irregular thin plank walls",
            "base_layer_decision": "base_structural_unit",
            "render_role": "not_applicable",
            "top_down_legibility": "not_applicable"
          },
          {
            "number": 2,
            "label": "warehouse forecourt",
            "category": "area",
            "position_hint": "east and south of the warehouse shell in the historical module",
            "base_layer_decision": "base_structural_unit",
            "render_role": "not_applicable",
            "top_down_legibility": "not_applicable"
          },
          {
            "number": 3,
            "label": "warehouse threshold zone",
            "category": "area",
            "position_hint": "narrow transition strip at the east wall of the warehouse",
            "base_layer_decision": "base_structural_unit",
            "render_role": "not_applicable",
            "top_down_legibility": "not_applicable"
          },
          {
            "number": 4,
            "label": "main plank door",
            "category": "opening",
            "position_hint": "center of the warehouse east wall, opening outward toward the forecourt",
            "base_layer_decision": "base_opening",
            "render_role": "not_applicable",
            "top_down_legibility": "not_applicable"
          }
        ],
        "transient_markers_to_describe": [
          {
            "number": 17,
            "label": "fallen military casualties",
            "category": "prop",
            "position_hint": "scattered across the warehouse forecourt; overlay only and not drawn on the base plan",
            "base_layer_decision": "state_overlay_transient_object",
            "render_role": "not_applicable",
            "top_down_legibility": "not_applicable"
          },
          {
            "number": 18,
            "label": "blood pools and trails",
            "category": "prop",
            "position_hint": "across the forecourt around the fallen casualties; overlay only and not drawn on the base plan",
            "base_layer_decision": "state_overlay_plot_cue",
            "render_role": "not_applicable",
            "top_down_legibility": "not_applicable"
          },
          {
            "number": 19,
            "label": "collapsed smoke-like entity",
            "category": "prop",
            "position_hint": "forecourt near the warehouse doorway; overlay only and not drawn on the base plan",
            "base_layer_decision": "state_overlay_transient_object",
            "render_role": "not_applicable",
            "top_down_legibility": "not_applicable"
          },
          {
            "number": 20,
            "label": "antler-tipped spear",
            "category": "prop",
            "position_hint": "at the collapsed entity near the warehouse doorway; overlay only and not drawn on the base plan",
            "base_layer_decision": "state_overlay_transient_object",
            "render_role": "not_applicable",
            "top_down_legibility": "not_applicable"
          },
          {
            "number": 22,
            "label": "vanishing smoke transfer trace",
            "category": "prop",
            "position_hint": "immediately around the collapsed entity in the forecourt; overlay only and not drawn on the base plan",
            "base_layer_decision": "state_overlay_plot_cue",
            "render_role": "not_applicable",
            "top_down_legibility": "not_applicable"
          }
        ],
        "ignored_state_overlay_markers": [
          {
            "number": 21,
            "label": "handheld smartphone",
            "category": "prop",
            "position_hint": "at the supervisor position inside the police office; overlay only and not drawn on the base plan",
            "base_layer_decision": "state_overlay_transient_object",
            "render_role": "not_applicable",
            "top_down_legibility": "not_applicable"
          }
        ],
        "target_unit_marker_numbers": [
          1,
          2,
          3
        ],
        "dominant_target_unit_marker_number": null,
        "clean_background_expected": false,
        "diagnostics": [
          "multiple base_structural_unit markers in use_numbered_elements ([1, 2, 3]); dominant_target_unit_marker_number left empty (W19B-1 lock — no lexical disambiguation)"
        ]
      },
      "L03B02": {
        "bg_id": "L03B02",
        "fp_id": "fp_l03_main_staging",
        "use_numbered_elements": [
          5,
          6,
          7,
          8,
          9,
          10,
          11,
          12,
          13,
          14,
          15,
          16,
          21
        ],
        "ignore_numbered_elements": [
          17,
          18,
          19,
          20,
          22
        ],
        "base_markers_to_reference": [
          {
            "number": 5,
            "label": "shared police office",
            "category": "area",
            "position_hint": "central and southern portion of the modern substation module",
            "base_layer_decision": "base_structural_unit",
            "render_role": "not_applicable",
            "top_down_legibility": "not_applicable"
          },
          {
            "number": 6,
            "label": "supervisor work zone",
            "category": "area",
            "position_hint": "northeast corner of the modern substation module",
            "base_layer_decision": "base_structural_unit",
            "render_role": "not_applicable",
            "top_down_legibility": "not_applicable"
          },
          {
            "number": 7,
            "label": "records and service zone",
            "category": "area",
            "position_hint": "northwest side of the modern substation module",
            "base_layer_decision": "base_structural_unit",
            "render_role": "not_applicable",
            "top_down_legibility": "not_applicable"
          },
          {
            "number": 8,
            "label": "substation threshold zone",
            "category": "area",
            "position_hint": "inside the south entrance of the modern substation module",
            "base_layer_decision": "base_structural_unit",
            "render_role": "not_applicable",
            "top_down_legibility": "not_applicable"
          },
          {
            "number": 9,
            "label": "substation entrance door",
            "category": "opening",
            "position_hint": "south wall of the modern substation, opening inward",
            "base_layer_decision": "base_opening",
            "render_role": "not_applicable",
            "top_down_legibility": "not_applicable"
          },
          {
            "number": 10,
            "label": "north office window",
            "category": "opening",
            "position_hint": "north wall above the shared office and records side",
            "base_layer_decision": "base_opening",
            "render_role": "not_applicable",
            "top_down_legibility": "not_applicable"
          },
          {
            "number": 11,
            "label": "east office window",
            "category": "opening",
            "position_hint": "east wall beside the supervisor work zone",
            "base_layer_decision": "base_opening",
            "render_role": "not_applicable",
            "top_down_legibility": "not_applicable"
          },
          {
            "number": 12,
            "label": "supervisor desk",
            "category": "furniture",
            "position_hint": "within the northeast supervisor work zone, facing southwest",
            "base_layer_decision": "base_persistent_furniture",
            "render_role": "not_applicable",
            "top_down_legibility": "not_applicable"
          },
          {
            "number": 13,
            "label": "junior officer desk",
            "category": "furniture",
            "position_hint": "central shared office, oriented toward the supervisor desk",
            "base_layer_decision": "base_persistent_furniture",
            "render_role": "not_applicable",
            "top_down_legibility": "not_applicable"
          },
          {
            "number": 14,
            "label": "public service counter",
            "category": "furniture",
            "position_hint": "west side of the shared office, separating the entrance path from the records zone",
            "base_layer_decision": "base_persistent_furniture",
            "render_role": "not_applicable",
            "top_down_legibility": "not_applicable"
          },
          {
            "number": 15,
            "label": "landline telephone",
            "category": "prop",
            "position_hint": "on the inner corner of the supervisor desk",
            "base_layer_decision": "base_persistent_fixture",
            "render_role": "not_applicable",
            "top_down_legibility": "not_applicable"
          },
          {
            "number": 16,
            "label": "built-in records shelving",
            "category": "furniture",
            "position_hint": "against the north and west walls of the records zone",
            "base_layer_decision": "base_persistent_fixture",
            "render_role": "not_applicable",
            "top_down_legibility": "not_applicable"
          }
        ],
        "transient_markers_to_describe": [
          {
            "number": 21,
            "label": "handheld smartphone",
            "category": "prop",
            "position_hint": "at the supervisor position inside the police office; overlay only and not drawn on the base plan",
            "base_layer_decision": "state_overlay_transient_object",
            "render_role": "not_applicable",
            "top_down_legibility": "not_applicable"
          }
        ],
        "ignored_state_overlay_markers": [
          {
            "number": 17,
            "label": "fallen military casualties",
            "category": "prop",
            "position_hint": "scattered across the warehouse forecourt; overlay only and not drawn on the base plan",
            "base_layer_decision": "state_overlay_transient_object",
            "render_role": "not_applicable",
            "top_down_legibility": "not_applicable"
          },
          {
            "number": 18,
            "label": "blood pools and trails",
            "category": "prop",
            "position_hint": "across the forecourt around the fallen casualties; overlay only and not drawn on the base plan",
            "base_layer_decision": "state_overlay_plot_cue",
            "render_role": "not_applicable",
            "top_down_legibility": "not_applicable"
          },
          {
            "number": 19,
            "label": "collapsed smoke-like entity",
            "category": "prop",
            "position_hint": "forecourt near the warehouse doorway; overlay only and not drawn on the base plan",
            "base_layer_decision": "state_overlay_transient_object",
            "render_role": "not_applicable",
            "top_down_legibility": "not_applicable"
          },
          {
            "number": 20,
            "label": "antler-tipped spear",
            "category": "prop",
            "position_hint": "at the collapsed entity near the warehouse doorway; overlay only and not drawn on the base plan",
            "base_layer_decision": "state_overlay_transient_object",
            "render_role": "not_applicable",
            "top_down_legibility": "not_applicable"
          },
          {
            "number": 22,
            "label": "vanishing smoke transfer trace",
            "category": "prop",
            "position_hint": "immediately around the collapsed entity in the forecourt; overlay only and not drawn on the base plan",
            "base_layer_decision": "state_overlay_plot_cue",
            "render_role": "not_applicable",
            "top_down_legibility": "not_applicable"
          }
        ],
        "target_unit_marker_numbers": [
          5,
          6,
          7,
          8
        ],
        "dominant_target_unit_marker_number": null,
        "clean_background_expected": false,
        "diagnostics": [
          "multiple base_structural_unit markers in use_numbered_elements ([5, 6, 7, 8]); dominant_target_unit_marker_number left empty (W19B-1 lock — no lexical disambiguation)"
        ]
      },
      "L10B02": {
        "bg_id": "L10B02",
        "fp_id": "fp_l10_main",
        "use_numbered_elements": [
          1,
          2,
          3,
          4,
          5,
          6,
          7,
          8,
          25,
          27
        ],
        "ignore_numbered_elements": [
          24,
          26
        ],
        "base_markers_to_reference": [
          {
            "number": 1,
            "label": "retail sales floor",
            "category": "area",
            "position_hint": "main rectangular store area between the storefront and rear refrigerated wall",
            "base_layer_decision": "base_structural_unit",
            "render_role": "not_applicable",
            "top_down_legibility": "not_applicable"
          },
          {
            "number": 2,
            "label": "cashier service zone",
            "category": "area",
            "position_hint": "front corner of the store beside the customer entrance",
            "base_layer_decision": "base_structural_unit",
            "render_role": "not_applicable",
            "top_down_legibility": "not_applicable"
          },
          {
            "number": 3,
            "label": "entrance threshold",
            "category": "area",
            "position_hint": "front wall between the cashier zone and storefront window",
            "base_layer_decision": "base_structural_unit",
            "render_role": "not_applicable",
            "top_down_legibility": "not_applicable"
          },
          {
            "number": 4,
            "label": "glass entrance door",
            "category": "opening",
            "position_hint": "front wall at the entrance threshold, opening inward",
            "base_layer_decision": "base_opening",
            "render_role": "not_applicable",
            "top_down_legibility": "not_applicable"
          },
          {
            "number": 5,
            "label": "storefront window",
            "category": "opening",
            "position_hint": "front wall beside the glass entrance door",
            "base_layer_decision": "base_opening",
            "render_role": "not_applicable",
            "top_down_legibility": "not_applicable"
          },
          {
            "number": 6,
            "label": "cashier counter",
            "category": "furniture",
            "position_hint": "inside the cashier service zone, facing the sales floor and entrance",
            "base_layer_decision": "base_persistent_fixture",
            "render_role": "not_applicable",
            "top_down_legibility": "not_applicable"
          },
          {
            "number": 7,
            "label": "shelving gondolas",
            "category": "furniture",
            "position_hint": "two parallel narrow aisles centered on the retail sales floor",
            "base_layer_decision": "base_persistent_furniture",
            "render_role": "not_applicable",
            "top_down_legibility": "not_applicable"
          },
          {
            "number": 8,
            "label": "refrigerated display wall",
            "category": "furniture",
            "position_hint": "continuous fixture along the rear wall of the store",
            "base_layer_decision": "base_persistent_fixture",
            "render_role": "not_applicable",
            "top_down_legibility": "not_applicable"
          }
        ],
        "transient_markers_to_describe": [
          {
            "number": 25,
            "label": "urgent-message smartphone",
            "category": "prop",
            "position_hint": "at the cashier counter in the store; overlay only",
            "base_layer_decision": "state_overlay_transient_object",
            "render_role": "not_applicable",
            "top_down_legibility": "not_applicable"
          },
          {
            "number": 27,
            "label": "money envelope",
            "category": "prop",
            "position_hint": "on or immediately behind the cashier counter; overlay only",
            "base_layer_decision": "state_overlay_transient_object",
            "render_role": "not_applicable",
            "top_down_legibility": "not_applicable"
          }
        ],
        "ignored_state_overlay_markers": [
          {
            "number": 24,
            "label": "bound rear-seat captive state",
            "category": "prop",
            "position_hint": "lying lengthwise across the rear bench seat; overlay only",
            "base_layer_decision": "state_overlay_plot_cue",
            "render_role": "not_applicable",
            "top_down_legibility": "not_applicable"
          },
          {
            "number": 26,
            "label": "driver handheld phone",
            "category": "prop",
            "position_hint": "adjacent to the driver seat and steering wheel; overlay only",
            "base_layer_decision": "state_overlay_transient_object",
            "render_role": "not_applicable",
            "top_down_legibility": "not_applicable"
          }
        ],
        "target_unit_marker_numbers": [
          1,
          2,
          3
        ],
        "dominant_target_unit_marker_number": null,
        "clean_background_expected": false,
        "diagnostics": [
          "multiple base_structural_unit markers in use_numbered_elements ([1, 2, 3]); dominant_target_unit_marker_number left empty (W19B-1 lock — no lexical disambiguation)"
        ]
      },
      "L10B01": {
        "bg_id": "L10B01",
        "fp_id": "fp_l10_main",
        "use_numbered_elements": [
          9,
          10,
          11,
          12,
          13,
          14,
          15,
          16,
          17,
          18,
          19,
          20,
          21,
          22,
          23,
          24,
          26
        ],
        "ignore_numbered_elements": [
          25,
          27
        ],
        "base_markers_to_reference": [
          {
            "number": 9,
            "label": "vehicle passenger cabin",
            "category": "area",
            "position_hint": "separate elongated vehicle-plan unit beside the store plan",
            "base_layer_decision": "base_structural_unit",
            "render_role": "not_applicable",
            "top_down_legibility": "not_applicable"
          },
          {
            "number": 10,
            "label": "driver seat",
            "category": "furniture",
            "position_hint": "front-left position of the vehicle cabin",
            "base_layer_decision": "base_persistent_furniture",
            "render_role": "not_applicable",
            "top_down_legibility": "not_applicable"
          },
          {
            "number": 11,
            "label": "front passenger seat",
            "category": "furniture",
            "position_hint": "front-right position of the vehicle cabin",
            "base_layer_decision": "base_persistent_furniture",
            "render_role": "not_applicable",
            "top_down_legibility": "not_applicable"
          },
          {
            "number": 12,
            "label": "dashboard and steering wheel",
            "category": "furniture",
            "position_hint": "across the front end of the cabin, with steering wheel before the driver seat",
            "base_layer_decision": "base_persistent_fixture",
            "render_role": "not_applicable",
            "top_down_legibility": "not_applicable"
          },
          {
            "number": 13,
            "label": "rear bench seat",
            "category": "furniture",
            "position_hint": "full-width rear seating row behind the two front seats",
            "base_layer_decision": "base_persistent_furniture",
            "render_role": "not_applicable",
            "top_down_legibility": "not_applicable"
          },
          {
            "number": 14,
            "label": "driver door",
            "category": "opening",
            "position_hint": "left side of the cabin beside the driver seat",
            "base_layer_decision": "base_opening",
            "render_role": "not_applicable",
            "top_down_legibility": "not_applicable"
          },
          {
            "number": 15,
            "label": "front passenger door",
            "category": "opening",
            "position_hint": "right side of the cabin beside the front passenger seat",
            "base_layer_decision": "base_opening",
            "render_role": "not_applicable",
            "top_down_legibility": "not_applicable"
          },
          {
            "number": 16,
            "label": "left rear door",
            "category": "opening",
            "position_hint": "left side of the cabin beside the rear bench",
            "base_layer_decision": "base_opening",
            "render_role": "not_applicable",
            "top_down_legibility": "not_applicable"
          },
          {
            "number": 17,
            "label": "right rear door",
            "category": "opening",
            "position_hint": "right side of the cabin beside the rear bench",
            "base_layer_decision": "base_opening",
            "render_role": "not_applicable",
            "top_down_legibility": "not_applicable"
          },
          {
            "number": 18,
            "label": "windshield",
            "category": "opening",
            "position_hint": "front edge of the vehicle cabin ahead of the dashboard",
            "base_layer_decision": "base_opening",
            "render_role": "not_applicable",
            "top_down_legibility": "not_applicable"
          },
          {
            "number": 19,
            "label": "driver side window",
            "category": "opening",
            "position_hint": "within the driver door opening",
            "base_layer_decision": "base_opening",
            "render_role": "not_applicable",
            "top_down_legibility": "not_applicable"
          },
          {
            "number": 20,
            "label": "front passenger window",
            "category": "opening",
            "position_hint": "within the front passenger door opening",
            "base_layer_decision": "base_opening",
            "render_role": "not_applicable",
            "top_down_legibility": "not_applicable"
          },
          {
            "number": 21,
            "label": "left rear window",
            "category": "opening",
            "position_hint": "within the left rear door opening",
            "base_layer_decision": "base_opening",
            "render_role": "not_applicable",
            "top_down_legibility": "not_applicable"
          },
          {
            "number": 22,
            "label": "right rear window",
            "category": "opening",
            "position_hint": "within the right rear door opening",
            "base_layer_decision": "base_opening",
            "render_role": "not_applicable",
            "top_down_legibility": "not_applicable"
          },
          {
            "number": 23,
            "label": "rear glazing",
            "category": "opening",
            "position_hint": "rear edge of the vehicle cabin behind the rear bench",
            "base_layer_decision": "base_opening",
            "render_role": "not_applicable",
            "top_down_legibility": "not_applicable"
          }
        ],
        "transient_markers_to_describe": [
          {
            "number": 24,
            "label": "bound rear-seat captive state",
            "category": "prop",
            "position_hint": "lying lengthwise across the rear bench seat; overlay only",
            "base_layer_decision": "state_overlay_plot_cue",
            "render_role": "not_applicable",
            "top_down_legibility": "not_applicable"
          },
          {
            "number": 26,
            "label": "driver handheld phone",
            "category": "prop",
            "position_hint": "adjacent to the driver seat and steering wheel; overlay only",
            "base_layer_decision": "state_overlay_transient_object",
            "render_role": "not_applicable",
            "top_down_legibility": "not_applicable"
          }
        ],
        "ignored_state_overlay_markers": [
          {
            "number": 25,
            "label": "urgent-message smartphone",
            "category": "prop",
            "position_hint": "at the cashier counter in the store; overlay only",
            "base_layer_decision": "state_overlay_transient_object",
            "render_role": "not_applicable",
            "top_down_legibility": "not_applicable"
          },
          {
            "number": 27,
            "label": "money envelope",
            "category": "prop",
            "position_hint": "on or immediately behind the cashier counter; overlay only",
            "base_layer_decision": "state_overlay_transient_object",
            "render_role": "not_applicable",
            "top_down_legibility": "not_applicable"
          }
        ],
        "target_unit_marker_numbers": [
          9
        ],
        "dominant_target_unit_marker_number": 9,
        "clean_background_expected": false,
        "diagnostics": []
      },
      "L11B04": {
        "bg_id": "L11B04",
        "fp_id": "fp_l11_main",
        "use_numbered_elements": [
          1,
          2,
          3,
          4,
          5,
          22
        ],
        "ignore_numbered_elements": [
          23,
          24,
          25,
          26,
          27
        ],
        "base_markers_to_reference": [
          {
            "number": 1,
            "label": "commuter bus cabin",
            "category": "area",
            "position_hint": "upper portion of the composite sheet, long rectangular shared transit module",
            "base_layer_decision": "base_structural_unit",
            "render_role": "not_applicable",
            "top_down_legibility": "not_applicable"
          },
          {
            "number": 2,
            "label": "bus front entry door",
            "category": "opening",
            "position_hint": "front-right corner of the commuter bus cabin",
            "base_layer_decision": "base_opening",
            "render_role": "not_applicable",
            "top_down_legibility": "not_applicable"
          },
          {
            "number": 3,
            "label": "left bus window bank",
            "category": "opening",
            "position_hint": "continuous opening band along the left wall of the commuter bus cabin",
            "base_layer_decision": "base_opening",
            "render_role": "not_applicable",
            "top_down_legibility": "not_applicable"
          },
          {
            "number": 4,
            "label": "right bus window bank",
            "category": "opening",
            "position_hint": "continuous opening band along the right wall of the commuter bus cabin",
            "base_layer_decision": "base_opening",
            "render_role": "not_applicable",
            "top_down_legibility": "not_applicable"
          },
          {
            "number": 5,
            "label": "fixed bus seat rows",
            "category": "furniture",
            "position_hint": "paired forward-facing seat rows on both sides of the central aisle",
            "base_layer_decision": "base_persistent_fixture",
            "render_role": "not_applicable",
            "top_down_legibility": "not_applicable"
          }
        ],
        "transient_markers_to_describe": [
          {
            "number": 22,
            "label": "urgent smartphone message display",
            "category": "prop",
            "position_hint": "held by the passenger seated beside a bus window; never draw on the base plan",
            "base_layer_decision": "state_overlay_transient_object",
            "render_role": "not_applicable",
            "top_down_legibility": "not_applicable"
          }
        ],
        "ignored_state_overlay_markers": [
          {
            "number": 23,
            "label": "smoke face in window reflection",
            "category": "prop",
            "position_hint": "strictly contained within a bus window surface beside a window seat; never draw on the base plan",
            "base_layer_decision": "state_overlay_plot_cue",
            "render_role": "not_applicable",
            "top_down_legibility": "not_applicable"
          },
          {
            "number": 24,
            "label": "broken and displaced furniture",
            "category": "furniture",
            "position_hint": "scattered across the residence living room around the sofa and low table; never draw on the base plan",
            "base_layer_decision": "state_overlay_transient_object",
            "render_role": "not_applicable",
            "top_down_legibility": "not_applicable"
          },
          {
            "number": 25,
            "label": "shattered fixture and planter debris",
            "category": "prop",
            "position_hint": "distributed across the residence floor beneath the light and near room edges; never draw on the base plan",
            "base_layer_decision": "state_overlay_transient_object",
            "render_role": "not_applicable",
            "top_down_legibility": "not_applicable"
          },
          {
            "number": 26,
            "label": "residence bloodstains",
            "category": "prop",
            "position_hint": "irregular marks at several points on the residence floor and nearby surfaces; never draw on the base plan",
            "base_layer_decision": "state_overlay_plot_cue",
            "render_role": "not_applicable",
            "top_down_legibility": "not_applicable"
          },
          {
            "number": 27,
            "label": "rear-seat restraints",
            "category": "prop",
            "position_hint": "around the rear-seat occupant on number 15; never draw on the base plan",
            "base_layer_decision": "state_overlay_transient_object",
            "render_role": "not_applicable",
            "top_down_legibility": "not_applicable"
          }
        ],
        "target_unit_marker_numbers": [
          1
        ],
        "dominant_target_unit_marker_number": 1,
        "clean_background_expected": false,
        "diagnostics": []
      },
      "L11B03": {
        "bg_id": "L11B03",
        "fp_id": "fp_l11_main",
        "use_numbered_elements": [
          1,
          3,
          4,
          5,
          23
        ],
        "ignore_numbered_elements": [
          22,
          24,
          25,
          26,
          27
        ],
        "base_markers_to_reference": [
          {
            "number": 1,
            "label": "commuter bus cabin",
            "category": "area",
            "position_hint": "upper portion of the composite sheet, long rectangular shared transit module",
            "base_layer_decision": "base_structural_unit",
            "render_role": "not_applicable",
            "top_down_legibility": "not_applicable"
          },
          {
            "number": 3,
            "label": "left bus window bank",
            "category": "opening",
            "position_hint": "continuous opening band along the left wall of the commuter bus cabin",
            "base_layer_decision": "base_opening",
            "render_role": "not_applicable",
            "top_down_legibility": "not_applicable"
          },
          {
            "number": 4,
            "label": "right bus window bank",
            "category": "opening",
            "position_hint": "continuous opening band along the right wall of the commuter bus cabin",
            "base_layer_decision": "base_opening",
            "render_role": "not_applicable",
            "top_down_legibility": "not_applicable"
          },
          {
            "number": 5,
            "label": "fixed bus seat rows",
            "category": "furniture",
            "position_hint": "paired forward-facing seat rows on both sides of the central aisle",
            "base_layer_decision": "base_persistent_fixture",
            "render_role": "not_applicable",
            "top_down_legibility": "not_applicable"
          }
        ],
        "transient_markers_to_describe": [
          {
            "number": 23,
            "label": "smoke face in window reflection",
            "category": "prop",
            "position_hint": "strictly contained within a bus window surface beside a window seat; never draw on the base plan",
            "base_layer_decision": "state_overlay_plot_cue",
            "render_role": "not_applicable",
            "top_down_legibility": "not_applicable"
          }
        ],
        "ignored_state_overlay_markers": [
          {
            "number": 22,
            "label": "urgent smartphone message display",
            "category": "prop",
            "position_hint": "held by the passenger seated beside a bus window; never draw on the base plan",
            "base_layer_decision": "state_overlay_transient_object",
            "render_role": "not_applicable",
            "top_down_legibility": "not_applicable"
          },
          {
            "number": 24,
            "label": "broken and displaced furniture",
            "category": "furniture",
            "position_hint": "scattered across the residence living room around the sofa and low table; never draw on the base plan",
            "base_layer_decision": "state_overlay_transient_object",
            "render_role": "not_applicable",
            "top_down_legibility": "not_applicable"
          },
          {
            "number": 25,
            "label": "shattered fixture and planter debris",
            "category": "prop",
            "position_hint": "distributed across the residence floor beneath the light and near room edges; never draw on the base plan",
            "base_layer_decision": "state_overlay_transient_object",
            "render_role": "not_applicable",
            "top_down_legibility": "not_applicable"
          },
          {
            "number": 26,
            "label": "residence bloodstains",
            "category": "prop",
            "position_hint": "irregular marks at several points on the residence floor and nearby surfaces; never draw on the base plan",
            "base_layer_decision": "state_overlay_plot_cue",
            "render_role": "not_applicable",
            "top_down_legibility": "not_applicable"
          },
          {
            "number": 27,
            "label": "rear-seat restraints",
            "category": "prop",
            "position_hint": "around the rear-seat occupant on number 15; never draw on the base plan",
            "base_layer_decision": "state_overlay_transient_object",
            "render_role": "not_applicable",
            "top_down_legibility": "not_applicable"
          }
        ],
        "target_unit_marker_numbers": [
          1
        ],
        "dominant_target_unit_marker_number": 1,
        "clean_background_expected": false,
        "diagnostics": []
      },
      "L11B02": {
        "bg_id": "L11B02",
        "fp_id": "fp_l11_main",
        "use_numbered_elements": [
          6,
          7,
          8,
          9,
          10,
          11,
          12,
          24,
          25,
          26
        ],
        "ignore_numbered_elements": [
          22,
          23,
          27
        ],
        "base_markers_to_reference": [
          {
            "number": 6,
            "label": "residence living room",
            "category": "area",
            "position_hint": "lower-left portion of the composite sheet, adjoining the entrance threshold",
            "base_layer_decision": "base_structural_unit",
            "render_role": "not_applicable",
            "top_down_legibility": "not_applicable"
          },
          {
            "number": 7,
            "label": "residence entry threshold",
            "category": "area",
            "position_hint": "small recessed threshold at the outer edge of the residence living room",
            "base_layer_decision": "base_structural_unit",
            "render_role": "not_applicable",
            "top_down_legibility": "not_applicable"
          },
          {
            "number": 8,
            "label": "residence entrance door",
            "category": "opening",
            "position_hint": "outer wall of the entry threshold, opening inward toward the living room",
            "base_layer_decision": "base_opening",
            "render_role": "not_applicable",
            "top_down_legibility": "not_applicable"
          },
          {
            "number": 9,
            "label": "residence window",
            "category": "opening",
            "position_hint": "exterior wall opposite or diagonally across from the entrance",
            "base_layer_decision": "base_opening",
            "render_role": "not_applicable",
            "top_down_legibility": "not_applicable"
          },
          {
            "number": 10,
            "label": "living room sofa",
            "category": "furniture",
            "position_hint": "against one long wall of the residence living room",
            "base_layer_decision": "base_persistent_furniture",
            "render_role": "not_applicable",
            "top_down_legibility": "not_applicable"
          },
          {
            "number": 11,
            "label": "low living room table",
            "category": "furniture",
            "position_hint": "near the center of the residence living room in front of the sofa",
            "base_layer_decision": "base_persistent_furniture",
            "render_role": "not_applicable",
            "top_down_legibility": "not_applicable"
          },
          {
            "number": 12,
            "label": "ceiling light fixture",
            "category": "prop",
            "position_hint": "centered over the residence living room",
            "base_layer_decision": "base_persistent_fixture",
            "render_role": "not_applicable",
            "top_down_legibility": "not_applicable"
          }
        ],
        "transient_markers_to_describe": [
          {
            "number": 24,
            "label": "broken and displaced furniture",
            "category": "furniture",
            "position_hint": "scattered across the residence living room around the sofa and low table; never draw on the base plan",
            "base_layer_decision": "state_overlay_transient_object",
            "render_role": "not_applicable",
            "top_down_legibility": "not_applicable"
          },
          {
            "number": 25,
            "label": "shattered fixture and planter debris",
            "category": "prop",
            "position_hint": "distributed across the residence floor beneath the light and near room edges; never draw on the base plan",
            "base_layer_decision": "state_overlay_transient_object",
            "render_role": "not_applicable",
            "top_down_legibility": "not_applicable"
          },
          {
            "number": 26,
            "label": "residence bloodstains",
            "category": "prop",
            "position_hint": "irregular marks at several points on the residence floor and nearby surfaces; never draw on the base plan",
            "base_layer_decision": "state_overlay_plot_cue",
            "render_role": "not_applicable",
            "top_down_legibility": "not_applicable"
          }
        ],
        "ignored_state_overlay_markers": [
          {
            "number": 22,
            "label": "urgent smartphone message display",
            "category": "prop",
            "position_hint": "held by the passenger seated beside a bus window; never draw on the base plan",
            "base_layer_decision": "state_overlay_transient_object",
            "render_role": "not_applicable",
            "top_down_legibility": "not_applicable"
          },
          {
            "number": 23,
            "label": "smoke face in window reflection",
            "category": "prop",
            "position_hint": "strictly contained within a bus window surface beside a window seat; never draw on the base plan",
            "base_layer_decision": "state_overlay_plot_cue",
            "render_role": "not_applicable",
            "top_down_legibility": "not_applicable"
          },
          {
            "number": 27,
            "label": "rear-seat restraints",
            "category": "prop",
            "position_hint": "around the rear-seat occupant on number 15; never draw on the base plan",
            "base_layer_decision": "state_overlay_transient_object",
            "render_role": "not_applicable",
            "top_down_legibility": "not_applicable"
          }
        ],
        "target_unit_marker_numbers": [
          6,
          7
        ],
        "dominant_target_unit_marker_number": null,
        "clean_background_expected": false,
        "diagnostics": [
          "multiple base_structural_unit markers in use_numbered_elements ([6, 7]); dominant_target_unit_marker_number left empty (W19B-1 lock — no lexical disambiguation)"
        ]
      },
      "L11B01": {
        "bg_id": "L11B01",
        "fp_id": "fp_l11_main",
        "use_numbered_elements": [
          13,
          14,
          15,
          16,
          17,
          18,
          19,
          20,
          21,
          27
        ],
        "ignore_numbered_elements": [
          22,
          23,
          24,
          25,
          26
        ],
        "base_markers_to_reference": [
          {
            "number": 13,
            "label": "older SUV cabin",
            "category": "area",
            "position_hint": "lower-right portion of the composite sheet, compact vehicle module",
            "base_layer_decision": "base_structural_unit",
            "render_role": "not_applicable",
            "top_down_legibility": "not_applicable"
          },
          {
            "number": 14,
            "label": "SUV front seat pair",
            "category": "furniture",
            "position_hint": "front half of the SUV cabin, split by a narrow center console",
            "base_layer_decision": "base_persistent_fixture",
            "render_role": "not_applicable",
            "top_down_legibility": "not_applicable"
          },
          {
            "number": 15,
            "label": "SUV rear bench seat",
            "category": "furniture",
            "position_hint": "rear half of the SUV cabin, spanning most of the cabin width",
            "base_layer_decision": "base_persistent_fixture",
            "render_role": "not_applicable",
            "top_down_legibility": "not_applicable"
          },
          {
            "number": 16,
            "label": "SUV left window bank",
            "category": "opening",
            "position_hint": "left side of the SUV cabin beside the front and rear seats",
            "base_layer_decision": "base_opening",
            "render_role": "not_applicable",
            "top_down_legibility": "not_applicable"
          },
          {
            "number": 17,
            "label": "SUV right window bank",
            "category": "opening",
            "position_hint": "right side of the SUV cabin beside the front and rear seats",
            "base_layer_decision": "base_opening",
            "render_role": "not_applicable",
            "top_down_legibility": "not_applicable"
          },
          {
            "number": 18,
            "label": "rearview mirror",
            "category": "prop",
            "position_hint": "front-center of the SUV cabin above the dashboard line",
            "base_layer_decision": "base_persistent_fixture",
            "render_role": "not_applicable",
            "top_down_legibility": "not_applicable"
          },
          {
            "number": 19,
            "label": "SUV driver door",
            "category": "opening",
            "position_hint": "left side of the front seating row",
            "base_layer_decision": "base_opening",
            "render_role": "not_applicable",
            "top_down_legibility": "not_applicable"
          },
          {
            "number": 20,
            "label": "SUV front passenger door",
            "category": "opening",
            "position_hint": "right side of the front seating row",
            "base_layer_decision": "base_opening",
            "render_role": "not_applicable",
            "top_down_legibility": "not_applicable"
          },
          {
            "number": 21,
            "label": "SUV rear side doors",
            "category": "opening",
            "position_hint": "paired side openings aligned with the rear bench",
            "base_layer_decision": "base_opening",
            "render_role": "not_applicable",
            "top_down_legibility": "not_applicable"
          }
        ],
        "transient_markers_to_describe": [
          {
            "number": 27,
            "label": "rear-seat restraints",
            "category": "prop",
            "position_hint": "around the rear-seat occupant on number 15; never draw on the base plan",
            "base_layer_decision": "state_overlay_transient_object",
            "render_role": "not_applicable",
            "top_down_legibility": "not_applicable"
          }
        ],
        "ignored_state_overlay_markers": [
          {
            "number": 22,
            "label": "urgent smartphone message display",
            "category": "prop",
            "position_hint": "held by the passenger seated beside a bus window; never draw on the base plan",
            "base_layer_decision": "state_overlay_transient_object",
            "render_role": "not_applicable",
            "top_down_legibility": "not_applicable"
          },
          {
            "number": 23,
            "label": "smoke face in window reflection",
            "category": "prop",
            "position_hint": "strictly contained within a bus window surface beside a window seat; never draw on the base plan",
            "base_layer_decision": "state_overlay_plot_cue",
            "render_role": "not_applicable",
            "top_down_legibility": "not_applicable"
          },
          {
            "number": 24,
            "label": "broken and displaced furniture",
            "category": "furniture",
            "position_hint": "scattered across the residence living room around the sofa and low table; never draw on the base plan",
            "base_layer_decision": "state_overlay_transient_object",
            "render_role": "not_applicable",
            "top_down_legibility": "not_applicable"
          },
          {
            "number": 25,
            "label": "shattered fixture and planter debris",
            "category": "prop",
            "position_hint": "distributed across the residence floor beneath the light and near room edges; never draw on the base plan",
            "base_layer_decision": "state_overlay_transient_object",
            "render_role": "not_applicable",
            "top_down_legibility": "not_applicable"
          },
          {
            "number": 26,
            "label": "residence bloodstains",
            "category": "prop",
            "position_hint": "irregular marks at several points on the residence floor and nearby surfaces; never draw on the base plan",
            "base_layer_decision": "state_overlay_plot_cue",
            "render_role": "not_applicable",
            "top_down_legibility": "not_applicable"
          }
        ],
        "target_unit_marker_numbers": [
          13
        ],
        "dominant_target_unit_marker_number": 13,
        "clean_background_expected": false,
        "diagnostics": []
      },
      "L13B04": {
        "bg_id": "L13B04",
        "fp_id": "fp_old_suv_interior",
        "use_numbered_elements": [
          1,
          2,
          3,
          5,
          7,
          8,
          9,
          10,
          11,
          12,
          17,
          18,
          19,
          24,
          25,
          26,
          27
        ],
        "ignore_numbered_elements": [],
        "base_markers_to_reference": [
          {
            "number": 1,
            "label": "SUV cabin shell",
            "category": "area",
            "position_hint": "outer boundary enclosing the complete vehicle cabin",
            "base_layer_decision": "base_structural_unit",
            "render_role": "not_applicable",
            "top_down_legibility": "not_applicable"
          },
          {
            "number": 2,
            "label": "front shared zone",
            "category": "area",
            "position_hint": "front half of cabin around the two front seats",
            "base_layer_decision": "base_structural_unit",
            "render_role": "not_applicable",
            "top_down_legibility": "not_applicable"
          },
          {
            "number": 3,
            "label": "rear passenger zone",
            "category": "area",
            "position_hint": "middle cabin around the rear bench",
            "base_layer_decision": "base_structural_unit",
            "render_role": "not_applicable",
            "top_down_legibility": "not_applicable"
          },
          {
            "number": 5,
            "label": "center control zone",
            "category": "area",
            "position_hint": "longitudinal center strip between the front seats",
            "base_layer_decision": "base_structural_unit",
            "render_role": "not_applicable",
            "top_down_legibility": "not_applicable"
          },
          {
            "number": 7,
            "label": "driver seat",
            "category": "furniture",
            "position_hint": "front left side facing the windshield",
            "base_layer_decision": "base_persistent_furniture",
            "render_role": "not_applicable",
            "top_down_legibility": "not_applicable"
          },
          {
            "number": 8,
            "label": "front passenger seat",
            "category": "furniture",
            "position_hint": "front right side facing the windshield",
            "base_layer_decision": "base_persistent_furniture",
            "render_role": "not_applicable",
            "top_down_legibility": "not_applicable"
          },
          {
            "number": 9,
            "label": "rear bench seat",
            "category": "furniture",
            "position_hint": "across the middle cabin behind the front seats",
            "base_layer_decision": "base_persistent_furniture",
            "render_role": "not_applicable",
            "top_down_legibility": "not_applicable"
          },
          {
            "number": 10,
            "label": "dashboard",
            "category": "prop",
            "position_hint": "full width along the front interior boundary",
            "base_layer_decision": "base_persistent_fixture",
            "render_role": "not_applicable",
            "top_down_legibility": "not_applicable"
          },
          {
            "number": 11,
            "label": "steering wheel",
            "category": "prop",
            "position_hint": "front left, attached to the driver side of the dashboard",
            "base_layer_decision": "base_persistent_fixture",
            "render_role": "not_applicable",
            "top_down_legibility": "not_applicable"
          },
          {
            "number": 12,
            "label": "center console",
            "category": "prop",
            "position_hint": "between the driver and front passenger seats",
            "base_layer_decision": "base_persistent_fixture",
            "render_role": "not_applicable",
            "top_down_legibility": "not_applicable"
          },
          {
            "number": 17,
            "label": "windshield",
            "category": "opening",
            "position_hint": "front boundary ahead of the dashboard",
            "base_layer_decision": "base_opening",
            "render_role": "not_applicable",
            "top_down_legibility": "not_applicable"
          },
          {
            "number": 18,
            "label": "left front side window",
            "category": "opening",
            "position_hint": "within the left front door opening",
            "base_layer_decision": "base_opening",
            "render_role": "not_applicable",
            "top_down_legibility": "not_applicable"
          },
          {
            "number": 19,
            "label": "right front side window",
            "category": "opening",
            "position_hint": "within the right front door opening",
            "base_layer_decision": "base_opening",
            "render_role": "not_applicable",
            "top_down_legibility": "not_applicable"
          }
        ],
        "transient_markers_to_describe": [
          {
            "number": 24,
            "label": "portable computer",
            "category": "prop",
            "position_hint": "temporarily open across the front passenger side and center console",
            "base_layer_decision": "state_overlay_transient_object",
            "render_role": "not_applicable",
            "top_down_legibility": "not_applicable"
          },
          {
            "number": 25,
            "label": "CCTV investigative imagery",
            "category": "prop",
            "position_hint": "confined to the portable computer display, showing recorded figures outside a residence",
            "base_layer_decision": "state_overlay_plot_cue",
            "render_role": "not_applicable",
            "top_down_legibility": "not_applicable"
          },
          {
            "number": 26,
            "label": "smartphone under review",
            "category": "prop",
            "position_hint": "held above or resting beside the center console",
            "base_layer_decision": "state_overlay_transient_object",
            "render_role": "not_applicable",
            "top_down_legibility": "not_applicable"
          },
          {
            "number": 27,
            "label": "island destination text message",
            "category": "prop",
            "position_hint": "confined to the smartphone display, stating that the sender's mother went to her island hometown and the sender will follow",
            "base_layer_decision": "state_overlay_plot_cue",
            "render_role": "not_applicable",
            "top_down_legibility": "not_applicable"
          }
        ],
        "ignored_state_overlay_markers": [],
        "target_unit_marker_numbers": [
          1,
          2,
          3,
          5
        ],
        "dominant_target_unit_marker_number": null,
        "clean_background_expected": false,
        "diagnostics": [
          "multiple base_structural_unit markers in use_numbered_elements ([1, 2, 3, 5]); dominant_target_unit_marker_number left empty (W19B-1 lock — no lexical disambiguation)"
        ]
      },
      "L15B01": {
        "bg_id": "L15B01",
        "fp_id": "fp_l15_main",
        "use_numbered_elements": [
          1,
          2,
          3,
          5,
          6,
          7,
          8,
          10
        ],
        "ignore_numbered_elements": [],
        "base_markers_to_reference": [
          {
            "number": 1,
            "label": "open working deck",
            "category": "area",
            "position_hint": "central and aft portion of the boat footprint",
            "base_layer_decision": "base_structural_unit",
            "render_role": "not_applicable",
            "top_down_legibility": "not_applicable"
          },
          {
            "number": 2,
            "label": "wheelhouse service zone",
            "category": "area",
            "position_hint": "forward-central enclosed cabin footprint",
            "base_layer_decision": "base_structural_unit",
            "render_role": "not_applicable",
            "top_down_legibility": "not_applicable"
          },
          {
            "number": 3,
            "label": "boarding threshold",
            "category": "area",
            "position_hint": "port-side aft edge beside the dock-facing rail opening",
            "base_layer_decision": "base_structural_unit",
            "render_role": "not_applicable",
            "top_down_legibility": "not_applicable"
          },
          {
            "number": 5,
            "label": "wheelhouse cabin door",
            "category": "opening",
            "position_hint": "aft wall of the wheelhouse, opening onto the working deck",
            "base_layer_decision": "base_opening",
            "render_role": "not_applicable",
            "top_down_legibility": "not_applicable"
          },
          {
            "number": 6,
            "label": "boarding rail gate",
            "category": "opening",
            "position_hint": "port perimeter railing at the boarding threshold",
            "base_layer_decision": "base_opening",
            "render_role": "not_applicable",
            "top_down_legibility": "not_applicable"
          },
          {
            "number": 7,
            "label": "perimeter safety railing",
            "category": "prop",
            "position_hint": "around exposed deck edges except at the boarding gate",
            "base_layer_decision": "base_persistent_fixture",
            "render_role": "not_applicable",
            "top_down_legibility": "not_applicable"
          },
          {
            "number": 8,
            "label": "port aft mooring cleat",
            "category": "prop",
            "position_hint": "port aft corner near the boarding threshold",
            "base_layer_decision": "base_persistent_fixture",
            "render_role": "not_applicable",
            "top_down_legibility": "not_applicable"
          },
          {
            "number": 10,
            "label": "fixed storage bench",
            "category": "furniture",
            "position_hint": "against the aft wall of the wheelhouse, offset from the cabin door",
            "base_layer_decision": "base_persistent_furniture",
            "render_role": "not_applicable",
            "top_down_legibility": "not_applicable"
          }
        ],
        "transient_markers_to_describe": [],
        "ignored_state_overlay_markers": [],
        "target_unit_marker_numbers": [
          1,
          2,
          3
        ],
        "dominant_target_unit_marker_number": null,
        "clean_background_expected": true,
        "diagnostics": [
          "multiple base_structural_unit markers in use_numbered_elements ([1, 2, 3]); dominant_target_unit_marker_number left empty (W19B-1 lock — no lexical disambiguation)"
        ]
      },
      "L18B05": {
        "bg_id": "L18B05",
        "fp_id": "fp_l18_restaurant_interior",
        "use_numbered_elements": [
          1,
          5,
          7,
          8,
          9,
          12,
          13,
          14
        ],
        "ignore_numbered_elements": [],
        "base_markers_to_reference": [
          {
            "number": 1,
            "label": "shared dining zone",
            "category": "area",
            "position_hint": "center and sea-facing side of the restaurant interior",
            "base_layer_decision": "base_structural_unit",
            "render_role": "not_applicable",
            "top_down_legibility": "not_applicable"
          },
          {
            "number": 5,
            "label": "sea-facing window bank",
            "category": "opening",
            "position_hint": "long exterior wall facing the sea-view strip",
            "base_layer_decision": "base_opening",
            "render_role": "not_applicable",
            "top_down_legibility": "not_applicable"
          },
          {
            "number": 7,
            "label": "window-side dining table",
            "category": "furniture",
            "position_hint": "shared dining zone directly beside the sea-facing windows",
            "base_layer_decision": "base_persistent_furniture",
            "render_role": "not_applicable",
            "top_down_legibility": "not_applicable"
          },
          {
            "number": 8,
            "label": "dining chair set",
            "category": "furniture",
            "position_hint": "arranged around the window-side dining table",
            "base_layer_decision": "base_persistent_furniture",
            "render_role": "not_applicable",
            "top_down_legibility": "not_applicable"
          },
          {
            "number": 9,
            "label": "service counter",
            "category": "furniture",
            "position_hint": "along the boundary between shared dining and service zones",
            "base_layer_decision": "base_persistent_fixture",
            "render_role": "not_applicable",
            "top_down_legibility": "not_applicable"
          },
          {
            "number": 14,
            "label": "exterior sea-view strip",
            "category": "area",
            "position_hint": "outside the sea-facing window wall",
            "base_layer_decision": "base_structural_unit",
            "render_role": "not_applicable",
            "top_down_legibility": "not_applicable"
          }
        ],
        "transient_markers_to_describe": [
          {
            "number": 12,
            "label": "smartphone displaying CCTV still",
            "category": "prop",
            "position_hint": "on the window-side dining table during the evidence inspection",
            "base_layer_decision": "state_overlay_transient_object",
            "render_role": "not_applicable",
            "top_down_legibility": "not_applicable"
          },
          {
            "number": 13,
            "label": "bottle and drinking glasses",
            "category": "prop",
            "position_hint": "distributed around the window-side dining table during the night conversation",
            "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,
          14
        ],
        "dominant_target_unit_marker_number": null,
        "clean_background_expected": false,
        "diagnostics": [
          "multiple base_structural_unit markers in use_numbered_elements ([1, 14]); dominant_target_unit_marker_number left empty (W19B-1 lock — no lexical disambiguation)"
        ]
      },
      "L23B03": {
        "bg_id": "L23B03",
        "fp_id": "fp_l23_backyard",
        "use_numbered_elements": [
          5,
          6,
          7,
          11,
          12,
          13,
          14,
          15,
          16,
          17
        ],
        "ignore_numbered_elements": [],
        "base_markers_to_reference": [
          {
            "number": 5,
            "label": "storage shed",
            "category": "area",
            "position_hint": "north side of the backyard, opposite the restaurant rear block",
            "base_layer_decision": "base_structural_unit",
            "render_role": "not_applicable",
            "top_down_legibility": "not_applicable"
          },
          {
            "number": 6,
            "label": "storage shed door",
            "category": "opening",
            "position_hint": "south wall of the storage shed, facing the backyard",
            "base_layer_decision": "base_opening",
            "render_role": "not_applicable",
            "top_down_legibility": "not_applicable"
          },
          {
            "number": 7,
            "label": "perimeter storage racks",
            "category": "furniture",
            "position_hint": "along the side and rear walls inside the storage shed",
            "base_layer_decision": "base_persistent_fixture",
            "render_role": "not_applicable",
            "top_down_legibility": "not_applicable"
          }
        ],
        "transient_markers_to_describe": [
          {
            "number": 11,
            "label": "temporary altar",
            "category": "prop",
            "position_hint": "deep inside the storage shed against the rear wall",
            "base_layer_decision": "state_overlay_transient_object",
            "render_role": "not_applicable",
            "top_down_legibility": "not_applicable"
          },
          {
            "number": 12,
            "label": "candle cluster",
            "category": "prop",
            "position_hint": "surrounding and illuminating the temporary altar",
            "base_layer_decision": "state_overlay_transient_object",
            "render_role": "not_applicable",
            "top_down_legibility": "not_applicable"
          },
          {
            "number": 13,
            "label": "black goat head",
            "category": "prop",
            "position_hint": "centered on top of the temporary altar",
            "base_layer_decision": "state_overlay_transient_object",
            "render_role": "not_applicable",
            "top_down_legibility": "not_applicable"
          },
          {
            "number": 14,
            "label": "blood-filled bowl",
            "category": "prop",
            "position_hint": "in front of the goat head on the temporary altar",
            "base_layer_decision": "state_overlay_transient_object",
            "render_role": "not_applicable",
            "top_down_legibility": "not_applicable"
          },
          {
            "number": 15,
            "label": "old horn-tipped spear",
            "category": "prop",
            "position_hint": "laid lengthwise above the goat head on the temporary altar",
            "base_layer_decision": "state_overlay_transient_object",
            "render_role": "not_applicable",
            "top_down_legibility": "not_applicable"
          },
          {
            "number": 16,
            "label": "incense and strange ritual ornaments",
            "category": "prop",
            "position_hint": "distributed across and immediately around the temporary altar",
            "base_layer_decision": "state_overlay_transient_object",
            "render_role": "not_applicable",
            "top_down_legibility": "not_applicable"
          },
          {
            "number": 17,
            "label": "lurking ceiling-corner silhouette",
            "category": "prop",
            "position_hint": "rear wall-ceiling corner behind the shed entrance viewpoint",
            "base_layer_decision": "state_overlay_plot_cue",
            "render_role": "not_applicable",
            "top_down_legibility": "not_applicable"
          }
        ],
        "ignored_state_overlay_markers": [],
        "target_unit_marker_numbers": [
          5
        ],
        "dominant_target_unit_marker_number": 5,
        "clean_background_expected": false,
        "diagnostics": []
      },
      "L30B01": {
        "bg_id": "L30B01",
        "fp_id": "fp_l30_back_room",
        "use_numbered_elements": [
          1,
          2,
          3,
          4,
          5,
          6,
          7,
          8,
          9,
          10,
          11
        ],
        "ignore_numbered_elements": [
          12
        ],
        "base_markers_to_reference": [
          {
            "number": 1,
            "label": "enclosed back room",
            "category": "area",
            "position_hint": "inside the southwest part of the overall room footprint",
            "base_layer_decision": "base_structural_unit",
            "render_role": "not_applicable",
            "top_down_legibility": "not_applicable"
          },
          {
            "number": 2,
            "label": "threshold zone",
            "category": "area",
            "position_hint": "south-central strip immediately inside the access door",
            "base_layer_decision": "base_structural_unit",
            "render_role": "not_applicable",
            "top_down_legibility": "not_applicable"
          },
          {
            "number": 3,
            "label": "storage service zone",
            "category": "area",
            "position_hint": "perimeter zone along the west, north and east walls",
            "base_layer_decision": "base_structural_unit",
            "render_role": "not_applicable",
            "top_down_legibility": "not_applicable"
          },
          {
            "number": 4,
            "label": "central holding zone",
            "category": "area",
            "position_hint": "open central and north-central floor area",
            "base_layer_decision": "base_structural_unit",
            "render_role": "not_applicable",
            "top_down_legibility": "not_applicable"
          },
          {
            "number": 5,
            "label": "service access door",
            "category": "opening",
            "position_hint": "south wall, opening inward toward the southeast",
            "base_layer_decision": "base_opening",
            "render_role": "not_applicable",
            "top_down_legibility": "not_applicable"
          },
          {
            "number": 6,
            "label": "fixed stock shelving",
            "category": "furniture",
            "position_hint": "against the north wall, offset toward the northeast",
            "base_layer_decision": "base_persistent_furniture",
            "render_role": "not_applicable",
            "top_down_legibility": "not_applicable"
          },
          {
            "number": 7,
            "label": "restaurant supply rack",
            "category": "furniture",
            "position_hint": "against the west wall",
            "base_layer_decision": "base_persistent_furniture",
            "render_role": "not_applicable",
            "top_down_legibility": "not_applicable"
          },
          {
            "number": 8,
            "label": "fishing gear rack",
            "category": "furniture",
            "position_hint": "against the east wall",
            "base_layer_decision": "base_persistent_furniture",
            "render_role": "not_applicable",
            "top_down_legibility": "not_applicable"
          },
          {
            "number": 9,
            "label": "low ceiling bulb",
            "category": "prop",
            "position_hint": "centered above the open holding zone",
            "base_layer_decision": "base_persistent_fixture",
            "render_role": "not_applicable",
            "top_down_legibility": "not_applicable"
          },
          {
            "number": 10,
            "label": "north wall anchor ring",
            "category": "prop",
            "position_hint": "low on the north wall beside the central holding position",
            "base_layer_decision": "base_persistent_fixture",
            "render_role": "not_applicable",
            "top_down_legibility": "not_applicable"
          },
          {
            "number": 11,
            "label": "opposite wall anchor ring",
            "category": "prop",
            "position_hint": "low on the south wall, east of the access door",
            "base_layer_decision": "base_persistent_fixture",
            "render_role": "not_applicable",
            "top_down_legibility": "not_applicable"
          }
        ],
        "transient_markers_to_describe": [],
        "ignored_state_overlay_markers": [
          {
            "number": 12,
            "label": "chained captive",
            "category": "prop",
            "position_hint": "on the floor near the north wall anchor ring",
            "base_layer_decision": "state_overlay_transient_object",
            "render_role": "not_applicable",
            "top_down_legibility": "not_applicable"
          }
        ],
        "target_unit_marker_numbers": [
          1,
          2,
          3,
          4
        ],
        "dominant_target_unit_marker_number": null,
        "clean_background_expected": true,
        "diagnostics": [
          "multiple base_structural_unit markers in use_numbered_elements ([1, 2, 3, 4]); dominant_target_unit_marker_number left empty (W19B-1 lock — no lexical disambiguation)"
        ]
      },
      "L30B02": {
        "bg_id": "L30B02",
        "fp_id": "fp_l30_back_room",
        "use_numbered_elements": [
          1,
          2,
          4,
          5,
          9,
          10,
          11,
          12
        ],
        "ignore_numbered_elements": [],
        "base_markers_to_reference": [
          {
            "number": 1,
            "label": "enclosed back room",
            "category": "area",
            "position_hint": "inside the southwest part of the overall room footprint",
            "base_layer_decision": "base_structural_unit",
            "render_role": "not_applicable",
            "top_down_legibility": "not_applicable"
          },
          {
            "number": 2,
            "label": "threshold zone",
            "category": "area",
            "position_hint": "south-central strip immediately inside the access door",
            "base_layer_decision": "base_structural_unit",
            "render_role": "not_applicable",
            "top_down_legibility": "not_applicable"
          },
          {
            "number": 4,
            "label": "central holding zone",
            "category": "area",
            "position_hint": "open central and north-central floor area",
            "base_layer_decision": "base_structural_unit",
            "render_role": "not_applicable",
            "top_down_legibility": "not_applicable"
          },
          {
            "number": 5,
            "label": "service access door",
            "category": "opening",
            "position_hint": "south wall, opening inward toward the southeast",
            "base_layer_decision": "base_opening",
            "render_role": "not_applicable",
            "top_down_legibility": "not_applicable"
          },
          {
            "number": 9,
            "label": "low ceiling bulb",
            "category": "prop",
            "position_hint": "centered above the open holding zone",
            "base_layer_decision": "base_persistent_fixture",
            "render_role": "not_applicable",
            "top_down_legibility": "not_applicable"
          },
          {
            "number": 10,
            "label": "north wall anchor ring",
            "category": "prop",
            "position_hint": "low on the north wall beside the central holding position",
            "base_layer_decision": "base_persistent_fixture",
            "render_role": "not_applicable",
            "top_down_legibility": "not_applicable"
          },
          {
            "number": 11,
            "label": "opposite wall anchor ring",
            "category": "prop",
            "position_hint": "low on the south wall, east of the access door",
            "base_layer_decision": "base_persistent_fixture",
            "render_role": "not_applicable",
            "top_down_legibility": "not_applicable"
          }
        ],
        "transient_markers_to_describe": [
          {
            "number": 12,
            "label": "chained captive",
            "category": "prop",
            "position_hint": "on the floor near the north wall anchor ring",
            "base_layer_decision": "state_overlay_transient_object",
            "render_role": "not_applicable",
            "top_down_legibility": "not_applicable"
          }
        ],
        "ignored_state_overlay_markers": [],
        "target_unit_marker_numbers": [
          1,
          2,
          4
        ],
        "dominant_target_unit_marker_number": null,
        "clean_background_expected": false,
        "diagnostics": [
          "multiple base_structural_unit markers in use_numbered_elements ([1, 2, 4]); dominant_target_unit_marker_number left empty (W19B-1 lock — no lexical disambiguation)"
        ]
      },
      "L53B01": {
        "bg_id": "L53B01",
        "fp_id": "fp_l53_restaurant_front",
        "use_numbered_elements": [
          3,
          4,
          5,
          8,
          9,
          10
        ],
        "ignore_numbered_elements": [
          1,
          2,
          6,
          7
        ],
        "base_markers_to_reference": [
          {
            "number": 3,
            "label": "enclosed threshold room",
            "category": "area",
            "position_hint": "south-central interior between the exterior entrance and restaurant shared zone",
            "base_layer_decision": "base_structural_unit",
            "render_role": "not_applicable",
            "top_down_legibility": "not_applicable"
          },
          {
            "number": 4,
            "label": "main exterior entrance",
            "category": "opening",
            "position_hint": "center of the south facade, opening inward into the enclosed threshold room",
            "base_layer_decision": "base_opening",
            "render_role": "not_applicable",
            "top_down_legibility": "not_applicable"
          },
          {
            "number": 5,
            "label": "inner doorway",
            "category": "opening",
            "position_hint": "north wall of the enclosed threshold room, connecting to the restaurant shared zone",
            "base_layer_decision": "base_opening",
            "render_role": "not_applicable",
            "top_down_legibility": "not_applicable"
          },
          {
            "number": 8,
            "label": "west wall restraint anchor",
            "category": "prop",
            "position_hint": "west wall of the enclosed threshold room",
            "base_layer_decision": "base_persistent_fixture",
            "render_role": "not_applicable",
            "top_down_legibility": "not_applicable"
          },
          {
            "number": 9,
            "label": "east wall restraint anchor",
            "category": "prop",
            "position_hint": "east wall of the enclosed threshold room, opposite number 8",
            "base_layer_decision": "base_persistent_fixture",
            "render_role": "not_applicable",
            "top_down_legibility": "not_applicable"
          }
        ],
        "transient_markers_to_describe": [
          {
            "number": 10,
            "label": "two injured captives chained apart",
            "category": "prop",
            "position_hint": "one captive at number 8 and the other at number 9, separated across the enclosed threshold room",
            "base_layer_decision": "state_overlay_plot_cue",
            "render_role": "not_applicable",
            "top_down_legibility": "not_applicable"
          }
        ],
        "ignored_state_overlay_markers": [],
        "target_unit_marker_numbers": [
          3
        ],
        "dominant_target_unit_marker_number": 3,
        "clean_background_expected": false,
        "diagnostics": [
          "marker #1 in ignore_numbered_elements is a base layer marker ('base_structural_unit'); structural elements normally remain in use",
          "marker #2 in ignore_numbered_elements is a base layer marker ('base_structural_unit'); structural elements normally remain in use",
          "marker #6 in ignore_numbered_elements is a base layer marker ('base_opening'); structural elements normally remain in use",
          "marker #7 in ignore_numbered_elements is a base layer marker ('base_opening'); structural elements normally remain in use"
        ]
      },
      "L22B01": {
        "bg_id": "L22B01",
        "fp_id": "fp_l22_cave_entrance",
        "use_numbered_elements": [
          3,
          4,
          5,
          6,
          7,
          8,
          9
        ],
        "ignore_numbered_elements": [],
        "base_markers_to_reference": [
          {
            "number": 3,
            "label": "cave threshold",
            "category": "area",
            "position_hint": "just inside the cave mouth at the south end",
            "base_layer_decision": "base_structural_unit",
            "render_role": "not_applicable",
            "top_down_legibility": "not_applicable"
          },
          {
            "number": 4,
            "label": "main cave chamber",
            "category": "area",
            "position_hint": "broad central portion of the cave interior",
            "base_layer_decision": "base_structural_unit",
            "render_role": "not_applicable",
            "top_down_legibility": "not_applicable"
          },
          {
            "number": 5,
            "label": "captive alcove",
            "category": "area",
            "position_hint": "recessed northeast corner of the main chamber",
            "base_layer_decision": "base_structural_unit",
            "render_role": "not_applicable",
            "top_down_legibility": "not_applicable"
          },
          {
            "number": 6,
            "label": "inner passage opening",
            "category": "opening",
            "position_hint": "narrow opening in the north wall leading deeper into the cave",
            "base_layer_decision": "base_opening",
            "render_role": "not_applicable",
            "top_down_legibility": "not_applicable"
          },
          {
            "number": 7,
            "label": "iron chain anchor",
            "category": "prop",
            "position_hint": "inner wall of the northeast captive alcove",
            "base_layer_decision": "base_persistent_fixture",
            "render_role": "not_applicable",
            "top_down_legibility": "not_applicable"
          }
        ],
        "transient_markers_to_describe": [
          {
            "number": 8,
            "label": "bone-strewn floor",
            "category": "prop",
            "position_hint": "scattered densely across most of the main chamber floor",
            "base_layer_decision": "state_overlay_plot_cue",
            "render_role": "not_applicable",
            "top_down_legibility": "not_applicable"
          },
          {
            "number": 9,
            "label": "chained captive",
            "category": "prop",
            "position_hint": "crouched on the floor of the northeast alcove beside the chain anchor",
            "base_layer_decision": "state_overlay_transient_object",
            "render_role": "not_applicable",
            "top_down_legibility": "not_applicable"
          }
        ],
        "ignored_state_overlay_markers": [],
        "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)"
        ]
      },
      "L35B02": {
        "bg_id": "L35B02",
        "fp_id": "fp_l35_cave_interior",
        "use_numbered_elements": [
          1,
          2,
          3,
          4,
          5,
          6,
          7
        ],
        "ignore_numbered_elements": [],
        "base_markers_to_reference": [
          {
            "number": 1,
            "label": "main cave chamber",
            "category": "area",
            "position_hint": "central and eastern portion of the plan",
            "base_layer_decision": "base_structural_unit",
            "render_role": "not_applicable",
            "top_down_legibility": "not_applicable"
          },
          {
            "number": 2,
            "label": "entry passage",
            "category": "area",
            "position_hint": "narrow route entering from the southeast edge",
            "base_layer_decision": "base_structural_unit",
            "render_role": "not_applicable",
            "top_down_legibility": "not_applicable"
          },
          {
            "number": 3,
            "label": "restraint area",
            "category": "area",
            "position_hint": "recessed area against the northwest cave wall",
            "base_layer_decision": "base_structural_unit",
            "render_role": "not_applicable",
            "top_down_legibility": "not_applicable"
          },
          {
            "number": 4,
            "label": "passage opening",
            "category": "opening",
            "position_hint": "southeast side of the chamber where the entry passage widens",
            "base_layer_decision": "base_opening",
            "render_role": "not_applicable",
            "top_down_legibility": "not_applicable"
          },
          {
            "number": 5,
            "label": "first iron chain restraint",
            "category": "prop",
            "position_hint": "low against the west wall within the restraint area",
            "base_layer_decision": "base_persistent_fixture",
            "render_role": "not_applicable",
            "top_down_legibility": "not_applicable"
          },
          {
            "number": 6,
            "label": "second iron chain restraint",
            "category": "prop",
            "position_hint": "low against the northwest wall beside the first restraint",
            "base_layer_decision": "base_persistent_fixture",
            "render_role": "not_applicable",
            "top_down_legibility": "not_applicable"
          }
        ],
        "transient_markers_to_describe": [
          {
            "number": 7,
            "label": "carried lantern",
            "category": "prop",
            "position_hint": "on the entry route near the passage opening, approaching the restrained occupants",
            "base_layer_decision": "state_overlay_transient_object",
            "render_role": "not_applicable",
            "top_down_legibility": "not_applicable"
          }
        ],
        "ignored_state_overlay_markers": [],
        "target_unit_marker_numbers": [
          1,
          2,
          3
        ],
        "dominant_target_unit_marker_number": null,
        "clean_background_expected": false,
        "diagnostics": [
          "multiple base_structural_unit markers in use_numbered_elements ([1, 2, 3]); dominant_target_unit_marker_number left empty (W19B-1 lock — no lexical disambiguation)"
        ]
      },
      "L25B03": {
        "bg_id": "L25B03",
        "fp_id": "fp_l25_goat_shed",
        "use_numbered_elements": [
          1,
          3,
          4,
          7,
          8,
          9,
          10,
          11,
          13
        ],
        "ignore_numbered_elements": [
          12,
          14
        ],
        "base_markers_to_reference": [
          {
            "number": 1,
            "label": "slaughter work area",
            "category": "area",
            "position_hint": "western and central two-thirds of the shed footprint",
            "base_layer_decision": "base_structural_unit",
            "render_role": "not_applicable",
            "top_down_legibility": "not_applicable"
          },
          {
            "number": 3,
            "label": "exterior observation threshold",
            "category": "area",
            "position_hint": "narrow exterior strip along the west wall beside the viewing window",
            "base_layer_decision": "base_structural_unit",
            "render_role": "not_applicable",
            "top_down_legibility": "not_applicable"
          },
          {
            "number": 4,
            "label": "broken viewing window",
            "category": "opening",
            "position_hint": "west exterior wall of the slaughter work area",
            "base_layer_decision": "base_opening",
            "render_role": "not_applicable",
            "top_down_legibility": "not_applicable"
          },
          {
            "number": 7,
            "label": "slaughter table",
            "category": "furniture",
            "position_hint": "center of the slaughter work area with circulation space on all sides",
            "base_layer_decision": "base_persistent_furniture",
            "render_role": "not_applicable",
            "top_down_legibility": "not_applicable"
          },
          {
            "number": 8,
            "label": "wall tool rack",
            "category": "prop",
            "position_hint": "north wall of the slaughter work area opposite the exterior access door",
            "base_layer_decision": "base_persistent_fixture",
            "render_role": "not_applicable",
            "top_down_legibility": "not_applicable"
          },
          {
            "number": 9,
            "label": "hanging hook rail",
            "category": "prop",
            "position_hint": "north wall near the storage partition, adjacent to the tool rack",
            "base_layer_decision": "base_persistent_fixture",
            "render_role": "not_applicable",
            "top_down_legibility": "not_applicable"
          },
          {
            "number": 10,
            "label": "blood collection station",
            "category": "prop",
            "position_hint": "beside the eastern end of the slaughter table",
            "base_layer_decision": "base_persistent_fixture",
            "render_role": "not_applicable",
            "top_down_legibility": "not_applicable"
          }
        ],
        "transient_markers_to_describe": [
          {
            "number": 11,
            "label": "fresh blood traces",
            "category": "prop",
            "position_hint": "slaughter table, nearby floor, and surrounding work-area wall surfaces",
            "base_layer_decision": "state_overlay_plot_cue",
            "render_role": "not_applicable",
            "top_down_legibility": "not_applicable"
          },
          {
            "number": 13,
            "label": "opened sack and active slaughter subject",
            "category": "prop",
            "position_hint": "on and immediately beside the central slaughter table at night",
            "base_layer_decision": "state_overlay_transient_object",
            "render_role": "not_applicable",
            "top_down_legibility": "not_applicable"
          }
        ],
        "ignored_state_overlay_markers": [
          {
            "number": 12,
            "label": "blood-soaked sacks and severed remains",
            "category": "prop",
            "position_hint": "storage-bay floor and rear corner",
            "base_layer_decision": "state_overlay_transient_object",
            "render_role": "not_applicable",
            "top_down_legibility": "not_applicable"
          },
          {
            "number": 14,
            "label": "closed storage door state",
            "category": "opening",
            "position_hint": "at the connecting doorway, concealing the storage bay from the work area",
            "base_layer_decision": "state_overlay_plot_cue",
            "render_role": "not_applicable",
            "top_down_legibility": "not_applicable"
          }
        ],
        "target_unit_marker_numbers": [
          1,
          3
        ],
        "dominant_target_unit_marker_number": null,
        "clean_background_expected": false,
        "diagnostics": [
          "multiple base_structural_unit markers in use_numbered_elements ([1, 3]); dominant_target_unit_marker_number left empty (W19B-1 lock — no lexical disambiguation)"
        ]
      },
      "L25B01": {
        "bg_id": "L25B01",
        "fp_id": "fp_l25_goat_shed",
        "use_numbered_elements": [
          2,
          5,
          12,
          14
        ],
        "ignore_numbered_elements": [
          13
        ],
        "base_markers_to_reference": [
          {
            "number": 2,
            "label": "storage bay",
            "category": "area",
            "position_hint": "enclosed eastern end of the shed footprint",
            "base_layer_decision": "base_structural_unit",
            "render_role": "not_applicable",
            "top_down_legibility": "not_applicable"
          },
          {
            "number": 5,
            "label": "storage connecting door",
            "category": "opening",
            "position_hint": "partition wall between the slaughter work area and storage bay",
            "base_layer_decision": "base_opening",
            "render_role": "not_applicable",
            "top_down_legibility": "not_applicable"
          }
        ],
        "transient_markers_to_describe": [
          {
            "number": 12,
            "label": "blood-soaked sacks and severed remains",
            "category": "prop",
            "position_hint": "storage-bay floor and rear corner",
            "base_layer_decision": "state_overlay_transient_object",
            "render_role": "not_applicable",
            "top_down_legibility": "not_applicable"
          },
          {
            "number": 14,
            "label": "closed storage door state",
            "category": "opening",
            "position_hint": "at the connecting doorway, concealing the storage bay from the work area",
            "base_layer_decision": "state_overlay_plot_cue",
            "render_role": "not_applicable",
            "top_down_legibility": "not_applicable"
          }
        ],
        "ignored_state_overlay_markers": [
          {
            "number": 13,
            "label": "opened sack and active slaughter subject",
            "category": "prop",
            "position_hint": "on and immediately beside the central slaughter table at night",
            "base_layer_decision": "state_overlay_transient_object",
            "render_role": "not_applicable",
            "top_down_legibility": "not_applicable"
          }
        ],
        "target_unit_marker_numbers": [
          2
        ],
        "dominant_target_unit_marker_number": 2,
        "clean_background_expected": false,
        "diagnostics": []
      },
      "L26B02": {
        "bg_id": "L26B02",
        "fp_id": "fp_l26_approach",
        "use_numbered_elements": [
          1,
          2,
          13
        ],
        "ignore_numbered_elements": [
          14,
          15
        ],
        "base_markers_to_reference": [
          {
            "number": 1,
            "label": "forest-road edge",
            "category": "area",
            "position_hint": "west and south exterior around the approach path",
            "base_layer_decision": "base_structural_unit",
            "render_role": "not_applicable",
            "top_down_legibility": "not_applicable"
          },
          {
            "number": 2,
            "label": "narrow forest path",
            "category": "area",
            "position_hint": "runs from southwest forest edge toward the shed threshold",
            "base_layer_decision": "base_structural_unit",
            "render_role": "not_applicable",
            "top_down_legibility": "not_applicable"
          }
        ],
        "transient_markers_to_describe": [
          {
            "number": 13,
            "label": "path-blocking transformed figure",
            "category": "prop",
            "position_hint": "middle of the narrow forest path, blocking forward movement",
            "base_layer_decision": "state_overlay_plot_cue",
            "render_role": "not_applicable",
            "top_down_legibility": "not_applicable"
          }
        ],
        "ignored_state_overlay_markers": [
          {
            "number": 14,
            "label": "goat-blood buckets",
            "category": "prop",
            "position_hint": "temporary cluster on the staging bay floor beside the slaughter table",
            "base_layer_decision": "state_overlay_transient_object",
            "render_role": "not_applicable",
            "top_down_legibility": "not_applicable"
          },
          {
            "number": 15,
            "label": "blood-drenching disguise state",
            "category": "prop",
            "position_hint": "open standing area beside the temporary blood buckets in the staging bay",
            "base_layer_decision": "state_overlay_plot_cue",
            "render_role": "not_applicable",
            "top_down_legibility": "not_applicable"
          }
        ],
        "target_unit_marker_numbers": [
          1,
          2
        ],
        "dominant_target_unit_marker_number": null,
        "clean_background_expected": false,
        "diagnostics": [
          "multiple base_structural_unit markers in use_numbered_elements ([1, 2]); dominant_target_unit_marker_number left empty (W19B-1 lock — no lexical disambiguation)"
        ]
      },
      "L26B01": {
        "bg_id": "L26B01",
        "fp_id": "fp_l26_approach",
        "use_numbered_elements": [
          3,
          4,
          5,
          6,
          7,
          8,
          9,
          10,
          11,
          12,
          14,
          15
        ],
        "ignore_numbered_elements": [
          13
        ],
        "base_markers_to_reference": [
          {
            "number": 3,
            "label": "entry threshold",
            "category": "area",
            "position_hint": "small exterior landing at the south side of the shed",
            "base_layer_decision": "base_structural_unit",
            "render_role": "not_applicable",
            "top_down_legibility": "not_applicable"
          },
          {
            "number": 4,
            "label": "dark staging bay",
            "category": "area",
            "position_hint": "main interior service area occupying most of the shed",
            "base_layer_decision": "base_structural_unit",
            "render_role": "not_applicable",
            "top_down_legibility": "not_applicable"
          },
          {
            "number": 5,
            "label": "makeshift wooden shed",
            "category": "area",
            "position_hint": "rectangular building shell at the northeast end of the path",
            "base_layer_decision": "base_structural_unit",
            "render_role": "not_applicable",
            "top_down_legibility": "not_applicable"
          },
          {
            "number": 6,
            "label": "storage room",
            "category": "area",
            "position_hint": "small enclosed room along the north side of the staging bay",
            "base_layer_decision": "base_structural_unit",
            "render_role": "not_applicable",
            "top_down_legibility": "not_applicable"
          },
          {
            "number": 7,
            "label": "exterior entrance door",
            "category": "opening",
            "position_hint": "south wall between the threshold and staging bay",
            "base_layer_decision": "base_opening",
            "render_role": "not_applicable",
            "top_down_legibility": "not_applicable"
          },
          {
            "number": 8,
            "label": "broken viewing window",
            "category": "opening",
            "position_hint": "west wall of the staging bay beside the exterior approach",
            "base_layer_decision": "base_opening",
            "render_role": "not_applicable",
            "top_down_legibility": "not_applicable"
          },
          {
            "number": 9,
            "label": "storage room door",
            "category": "opening",
            "position_hint": "north interior partition connecting the staging bay to storage",
            "base_layer_decision": "base_opening",
            "render_role": "not_applicable",
            "top_down_legibility": "not_applicable"
          },
          {
            "number": 10,
            "label": "slaughter table",
            "category": "furniture",
            "position_hint": "center of the staging bay with circulation space around it",
            "base_layer_decision": "base_persistent_furniture",
            "render_role": "not_applicable",
            "top_down_legibility": "not_applicable"
          },
          {
            "number": 11,
            "label": "wall-mounted knife rack",
            "category": "prop",
            "position_hint": "east wall of the staging bay",
            "base_layer_decision": "base_persistent_fixture",
            "render_role": "not_applicable",
            "top_down_legibility": "not_applicable"
          },
          {
            "number": 12,
            "label": "hanging hook rail",
            "category": "prop",
            "position_hint": "north-central side of the staging bay near the storage partition",
            "base_layer_decision": "base_persistent_fixture",
            "render_role": "not_applicable",
            "top_down_legibility": "not_applicable"
          }
        ],
        "transient_markers_to_describe": [
          {
            "number": 14,
            "label": "goat-blood buckets",
            "category": "prop",
            "position_hint": "temporary cluster on the staging bay floor beside the slaughter table",
            "base_layer_decision": "state_overlay_transient_object",
            "render_role": "not_applicable",
            "top_down_legibility": "not_applicable"
          },
          {
            "number": 15,
            "label": "blood-drenching disguise state",
            "category": "prop",
            "position_hint": "open standing area beside the temporary blood buckets in the staging bay",
            "base_layer_decision": "state_overlay_plot_cue",
            "render_role": "not_applicable",
            "top_down_legibility": "not_applicable"
          }
        ],
        "ignored_state_overlay_markers": [
          {
            "number": 13,
            "label": "path-blocking transformed figure",
            "category": "prop",
            "position_hint": "middle of the narrow forest path, blocking forward movement",
            "base_layer_decision": "state_overlay_plot_cue",
            "render_role": "not_applicable",
            "top_down_legibility": "not_applicable"
          }
        ],
        "target_unit_marker_numbers": [
          3,
          4,
          5,
          6
        ],
        "dominant_target_unit_marker_number": null,
        "clean_background_expected": false,
        "diagnostics": [
          "multiple base_structural_unit markers in use_numbered_elements ([3, 4, 5, 6]); dominant_target_unit_marker_number left empty (W19B-1 lock — no lexical disambiguation)"
        ]
      },
      "L38B04": {
        "bg_id": "L38B04",
        "fp_id": "fp_patrol_boat_deck",
        "use_numbered_elements": [
          3,
          4,
          5,
          6,
          8,
          9,
          10,
          11,
          13,
          14,
          16,
          17,
          18,
          19
        ],
        "ignore_numbered_elements": [
          20,
          21
        ],
        "base_markers_to_reference": [
          {
            "number": 3,
            "label": "enclosed wheelhouse",
            "category": "area",
            "position_hint": "centered slightly forward of midships",
            "base_layer_decision": "base_structural_unit",
            "render_role": "not_applicable",
            "top_down_legibility": "not_applicable"
          },
          {
            "number": 4,
            "label": "port side passage",
            "category": "area",
            "position_hint": "narrow passage along the port side of the wheelhouse",
            "base_layer_decision": "base_structural_unit",
            "render_role": "not_applicable",
            "top_down_legibility": "not_applicable"
          },
          {
            "number": 5,
            "label": "starboard side passage",
            "category": "area",
            "position_hint": "narrow passage along the starboard side of the wheelhouse",
            "base_layer_decision": "base_structural_unit",
            "render_role": "not_applicable",
            "top_down_legibility": "not_applicable"
          },
          {
            "number": 6,
            "label": "aft open deck",
            "category": "area",
            "position_hint": "broad open deck behind the wheelhouse",
            "base_layer_decision": "base_structural_unit",
            "render_role": "not_applicable",
            "top_down_legibility": "not_applicable"
          },
          {
            "number": 8,
            "label": "port safety rail",
            "category": "prop",
            "position_hint": "along the outer port deck edge",
            "base_layer_decision": "base_persistent_fixture",
            "render_role": "not_applicable",
            "top_down_legibility": "not_applicable"
          },
          {
            "number": 9,
            "label": "starboard safety rail",
            "category": "prop",
            "position_hint": "along the outer starboard deck edge",
            "base_layer_decision": "base_persistent_fixture",
            "render_role": "not_applicable",
            "top_down_legibility": "not_applicable"
          },
          {
            "number": 10,
            "label": "stern safety rail",
            "category": "prop",
            "position_hint": "across the rear edge of the aft deck, interrupted by the boarding gate",
            "base_layer_decision": "base_persistent_fixture",
            "render_role": "not_applicable",
            "top_down_legibility": "not_applicable"
          },
          {
            "number": 11,
            "label": "aft wheelhouse door",
            "category": "opening",
            "position_hint": "center of the wheelhouse aft wall, opening onto the aft deck",
            "base_layer_decision": "base_opening",
            "render_role": "not_applicable",
            "top_down_legibility": "not_applicable"
          },
          {
            "number": 13,
            "label": "port window bank",
            "category": "opening",
            "position_hint": "port wall of the wheelhouse",
            "base_layer_decision": "base_opening",
            "render_role": "not_applicable",
            "top_down_legibility": "not_applicable"
          },
          {
            "number": 14,
            "label": "starboard window bank",
            "category": "opening",
            "position_hint": "starboard wall of the wheelhouse",
            "base_layer_decision": "base_opening",
            "render_role": "not_applicable",
            "top_down_legibility": "not_applicable"
          },
          {
            "number": 16,
            "label": "mast and navigation unit",
            "category": "prop",
            "position_hint": "centered on the wheelhouse roof footprint",
            "base_layer_decision": "base_persistent_fixture",
            "render_role": "not_applicable",
            "top_down_legibility": "not_applicable"
          },
          {
            "number": 17,
            "label": "aft deck bench",
            "category": "furniture",
            "position_hint": "against the port side of the aft deck, clear of the central walkway",
            "base_layer_decision": "base_persistent_furniture",
            "render_role": "not_applicable",
            "top_down_legibility": "not_applicable"
          },
          {
            "number": 18,
            "label": "stern boarding gate",
            "category": "opening",
            "position_hint": "center of the stern rail at the end of the main circulation path",
            "base_layer_decision": "base_opening",
            "render_role": "not_applicable",
            "top_down_legibility": "not_applicable"
          }
        ],
        "transient_markers_to_describe": [
          {
            "number": 19,
            "label": "hostile watcher silhouettes",
            "category": "prop",
            "position_hint": "beyond the side or stern railings in the night surveillance state; overlay only",
            "base_layer_decision": "state_overlay_transient_object",
            "render_role": "not_applicable",
            "top_down_legibility": "not_applicable"
          }
        ],
        "ignored_state_overlay_markers": [
          {
            "number": 20,
            "label": "dripping blood and deck smears",
            "category": "prop",
            "position_hint": "across the aft deck near the wheelhouse entrance in the panic state; overlay only",
            "base_layer_decision": "state_overlay_plot_cue",
            "render_role": "not_applicable",
            "top_down_legibility": "not_applicable"
          },
          {
            "number": 21,
            "label": "bloodied hands in foreground",
            "category": "prop",
            "position_hint": "close foreground over the aft deck during the panic state; 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,
          6
        ],
        "dominant_target_unit_marker_number": null,
        "clean_background_expected": false,
        "diagnostics": [
          "multiple base_structural_unit markers in use_numbered_elements ([3, 4, 5, 6]); dominant_target_unit_marker_number left empty (W19B-1 lock — no lexical disambiguation)"
        ]
      },
      "L38B03": {
        "bg_id": "L38B03",
        "fp_id": "fp_patrol_boat_deck",
        "use_numbered_elements": [
          3,
          4,
          5,
          6,
          8,
          9,
          10,
          11,
          13,
          14,
          16,
          17,
          18,
          20,
          21
        ],
        "ignore_numbered_elements": [
          19
        ],
        "base_markers_to_reference": [
          {
            "number": 3,
            "label": "enclosed wheelhouse",
            "category": "area",
            "position_hint": "centered slightly forward of midships",
            "base_layer_decision": "base_structural_unit",
            "render_role": "not_applicable",
            "top_down_legibility": "not_applicable"
          },
          {
            "number": 4,
            "label": "port side passage",
            "category": "area",
            "position_hint": "narrow passage along the port side of the wheelhouse",
            "base_layer_decision": "base_structural_unit",
            "render_role": "not_applicable",
            "top_down_legibility": "not_applicable"
          },
          {
            "number": 5,
            "label": "starboard side passage",
            "category": "area",
            "position_hint": "narrow passage along the starboard side of the wheelhouse",
            "base_layer_decision": "base_structural_unit",
            "render_role": "not_applicable",
            "top_down_legibility": "not_applicable"
          },
          {
            "number": 6,
            "label": "aft open deck",
            "category": "area",
            "position_hint": "broad open deck behind the wheelhouse",
            "base_layer_decision": "base_structural_unit",
            "render_role": "not_applicable",
            "top_down_legibility": "not_applicable"
          },
          {
            "number": 8,
            "label": "port safety rail",
            "category": "prop",
            "position_hint": "along the outer port deck edge",
            "base_layer_decision": "base_persistent_fixture",
            "render_role": "not_applicable",
            "top_down_legibility": "not_applicable"
          },
          {
            "number": 9,
            "label": "starboard safety rail",
            "category": "prop",
            "position_hint": "along the outer starboard deck edge",
            "base_layer_decision": "base_persistent_fixture",
            "render_role": "not_applicable",
            "top_down_legibility": "not_applicable"
          },
          {
            "number": 10,
            "label": "stern safety rail",
            "category": "prop",
            "position_hint": "across the rear edge of the aft deck, interrupted by the boarding gate",
            "base_layer_decision": "base_persistent_fixture",
            "render_role": "not_applicable",
            "top_down_legibility": "not_applicable"
          },
          {
            "number": 11,
            "label": "aft wheelhouse door",
            "category": "opening",
            "position_hint": "center of the wheelhouse aft wall, opening onto the aft deck",
            "base_layer_decision": "base_opening",
            "render_role": "not_applicable",
            "top_down_legibility": "not_applicable"
          },
          {
            "number": 13,
            "label": "port window bank",
            "category": "opening",
            "position_hint": "port wall of the wheelhouse",
            "base_layer_decision": "base_opening",
            "render_role": "not_applicable",
            "top_down_legibility": "not_applicable"
          },
          {
            "number": 14,
            "label": "starboard window bank",
            "category": "opening",
            "position_hint": "starboard wall of the wheelhouse",
            "base_layer_decision": "base_opening",
            "render_role": "not_applicable",
            "top_down_legibility": "not_applicable"
          },
          {
            "number": 16,
            "label": "mast and navigation unit",
            "category": "prop",
            "position_hint": "centered on the wheelhouse roof footprint",
            "base_layer_decision": "base_persistent_fixture",
            "render_role": "not_applicable",
            "top_down_legibility": "not_applicable"
          },
          {
            "number": 17,
            "label": "aft deck bench",
            "category": "furniture",
            "position_hint": "against the port side of the aft deck, clear of the central walkway",
            "base_layer_decision": "base_persistent_furniture",
            "render_role": "not_applicable",
            "top_down_legibility": "not_applicable"
          },
          {
            "number": 18,
            "label": "stern boarding gate",
            "category": "opening",
            "position_hint": "center of the stern rail at the end of the main circulation path",
            "base_layer_decision": "base_opening",
            "render_role": "not_applicable",
            "top_down_legibility": "not_applicable"
          }
        ],
        "transient_markers_to_describe": [
          {
            "number": 20,
            "label": "dripping blood and deck smears",
            "category": "prop",
            "position_hint": "across the aft deck near the wheelhouse entrance in the panic state; overlay only",
            "base_layer_decision": "state_overlay_plot_cue",
            "render_role": "not_applicable",
            "top_down_legibility": "not_applicable"
          },
          {
            "number": 21,
            "label": "bloodied hands in foreground",
            "category": "prop",
            "position_hint": "close foreground over the aft deck during the panic state; overlay only",
            "base_layer_decision": "state_overlay_transient_object",
            "render_role": "not_applicable",
            "top_down_legibility": "not_applicable"
          }
        ],
        "ignored_state_overlay_markers": [
          {
            "number": 19,
            "label": "hostile watcher silhouettes",
            "category": "prop",
            "position_hint": "beyond the side or stern railings in the night surveillance state; 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,
          6
        ],
        "dominant_target_unit_marker_number": null,
        "clean_background_expected": false,
        "diagnostics": [
          "multiple base_structural_unit markers in use_numbered_elements ([3, 4, 5, 6]); dominant_target_unit_marker_number left empty (W19B-1 lock — no lexical disambiguation)"
        ]
      },
      "L38B01": {
        "bg_id": "L38B01",
        "fp_id": "fp_patrol_boat_deck",
        "use_numbered_elements": [
          1,
          2,
          3,
          4,
          5,
          6,
          7,
          8,
          9,
          10,
          12,
          13,
          14,
          16
        ],
        "ignore_numbered_elements": [
          19,
          20,
          21
        ],
        "base_markers_to_reference": [
          {
            "number": 1,
            "label": "boat hull envelope",
            "category": "area",
            "position_hint": "entire elongated outer footprint, marker near the bow centerline",
            "base_layer_decision": "base_structural_unit",
            "render_role": "not_applicable",
            "top_down_legibility": "not_applicable"
          },
          {
            "number": 2,
            "label": "foredeck working zone",
            "category": "area",
            "position_hint": "forward of the wheelhouse within the tapered bow",
            "base_layer_decision": "base_structural_unit",
            "render_role": "not_applicable",
            "top_down_legibility": "not_applicable"
          },
          {
            "number": 3,
            "label": "enclosed wheelhouse",
            "category": "area",
            "position_hint": "centered slightly forward of midships",
            "base_layer_decision": "base_structural_unit",
            "render_role": "not_applicable",
            "top_down_legibility": "not_applicable"
          },
          {
            "number": 4,
            "label": "port side passage",
            "category": "area",
            "position_hint": "narrow passage along the port side of the wheelhouse",
            "base_layer_decision": "base_structural_unit",
            "render_role": "not_applicable",
            "top_down_legibility": "not_applicable"
          },
          {
            "number": 5,
            "label": "starboard side passage",
            "category": "area",
            "position_hint": "narrow passage along the starboard side of the wheelhouse",
            "base_layer_decision": "base_structural_unit",
            "render_role": "not_applicable",
            "top_down_legibility": "not_applicable"
          },
          {
            "number": 6,
            "label": "aft open deck",
            "category": "area",
            "position_hint": "broad open deck behind the wheelhouse",
            "base_layer_decision": "base_structural_unit",
            "render_role": "not_applicable",
            "top_down_legibility": "not_applicable"
          },
          {
            "number": 7,
            "label": "bow safety rail",
            "category": "prop",
            "position_hint": "following the curved forward edge of the foredeck",
            "base_layer_decision": "base_persistent_fixture",
            "render_role": "not_applicable",
            "top_down_legibility": "not_applicable"
          },
          {
            "number": 8,
            "label": "port safety rail",
            "category": "prop",
            "position_hint": "along the outer port deck edge",
            "base_layer_decision": "base_persistent_fixture",
            "render_role": "not_applicable",
            "top_down_legibility": "not_applicable"
          },
          {
            "number": 9,
            "label": "starboard safety rail",
            "category": "prop",
            "position_hint": "along the outer starboard deck edge",
            "base_layer_decision": "base_persistent_fixture",
            "render_role": "not_applicable",
            "top_down_legibility": "not_applicable"
          },
          {
            "number": 10,
            "label": "stern safety rail",
            "category": "prop",
            "position_hint": "across the rear edge of the aft deck, interrupted by the boarding gate",
            "base_layer_decision": "base_persistent_fixture",
            "render_role": "not_applicable",
            "top_down_legibility": "not_applicable"
          },
          {
            "number": 12,
            "label": "forward window bank",
            "category": "opening",
            "position_hint": "across the angled forward wall of the wheelhouse",
            "base_layer_decision": "base_opening",
            "render_role": "not_applicable",
            "top_down_legibility": "not_applicable"
          },
          {
            "number": 13,
            "label": "port window bank",
            "category": "opening",
            "position_hint": "port wall of the wheelhouse",
            "base_layer_decision": "base_opening",
            "render_role": "not_applicable",
            "top_down_legibility": "not_applicable"
          },
          {
            "number": 14,
            "label": "starboard window bank",
            "category": "opening",
            "position_hint": "starboard wall of the wheelhouse",
            "base_layer_decision": "base_opening",
            "render_role": "not_applicable",
            "top_down_legibility": "not_applicable"
          },
          {
            "number": 16,
            "label": "mast and navigation unit",
            "category": "prop",
            "position_hint": "centered on the wheelhouse roof footprint",
            "base_layer_decision": "base_persistent_fixture",
            "render_role": "not_applicable",
            "top_down_legibility": "not_applicable"
          }
        ],
        "transient_markers_to_describe": [],
        "ignored_state_overlay_markers": [
          {
            "number": 19,
            "label": "hostile watcher silhouettes",
            "category": "prop",
            "position_hint": "beyond the side or stern railings in the night surveillance state; overlay only",
            "base_layer_decision": "state_overlay_transient_object",
            "render_role": "not_applicable",
            "top_down_legibility": "not_applicable"
          },
          {
            "number": 20,
            "label": "dripping blood and deck smears",
            "category": "prop",
            "position_hint": "across the aft deck near the wheelhouse entrance in the panic state; overlay only",
            "base_layer_decision": "state_overlay_plot_cue",
            "render_role": "not_applicable",
            "top_down_legibility": "not_applicable"
          },
          {
            "number": 21,
            "label": "bloodied hands in foreground",
            "category": "prop",
            "position_hint": "close foreground over the aft deck during the panic state; overlay only",
            "base_layer_decision": "state_overlay_transient_object",
            "render_role": "not_applicable",
            "top_down_legibility": "not_applicable"
          }
        ],
        "target_unit_marker_numbers": [
          1,
          2,
          3,
          4,
          5,
          6
        ],
        "dominant_target_unit_marker_number": null,
        "clean_background_expected": true,
        "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)"
        ]
      },
      "L38B02": {
        "bg_id": "L38B02",
        "fp_id": "fp_patrol_boat_deck",
        "use_numbered_elements": [
          3,
          4,
          5,
          6,
          8,
          9,
          10,
          11,
          13,
          14,
          16,
          17,
          18
        ],
        "ignore_numbered_elements": [
          19,
          20,
          21
        ],
        "base_markers_to_reference": [
          {
            "number": 3,
            "label": "enclosed wheelhouse",
            "category": "area",
            "position_hint": "centered slightly forward of midships",
            "base_layer_decision": "base_structural_unit",
            "render_role": "not_applicable",
            "top_down_legibility": "not_applicable"
          },
          {
            "number": 4,
            "label": "port side passage",
            "category": "area",
            "position_hint": "narrow passage along the port side of the wheelhouse",
            "base_layer_decision": "base_structural_unit",
            "render_role": "not_applicable",
            "top_down_legibility": "not_applicable"
          },
          {
            "number": 5,
            "label": "starboard side passage",
            "category": "area",
            "position_hint": "narrow passage along the starboard side of the wheelhouse",
            "base_layer_decision": "base_structural_unit",
            "render_role": "not_applicable",
            "top_down_legibility": "not_applicable"
          },
          {
            "number": 6,
            "label": "aft open deck",
            "category": "area",
            "position_hint": "broad open deck behind the wheelhouse",
            "base_layer_decision": "base_structural_unit",
            "render_role": "not_applicable",
            "top_down_legibility": "not_applicable"
          },
          {
            "number": 8,
            "label": "port safety rail",
            "category": "prop",
            "position_hint": "along the outer port deck edge",
            "base_layer_decision": "base_persistent_fixture",
            "render_role": "not_applicable",
            "top_down_legibility": "not_applicable"
          },
          {
            "number": 9,
            "label": "starboard safety rail",
            "category": "prop",
            "position_hint": "along the outer starboard deck edge",
            "base_layer_decision": "base_persistent_fixture",
            "render_role": "not_applicable",
            "top_down_legibility": "not_applicable"
          },
          {
            "number": 10,
            "label": "stern safety rail",
            "category": "prop",
            "position_hint": "across the rear edge of the aft deck, interrupted by the boarding gate",
            "base_layer_decision": "base_persistent_fixture",
            "render_role": "not_applicable",
            "top_down_legibility": "not_applicable"
          },
          {
            "number": 11,
            "label": "aft wheelhouse door",
            "category": "opening",
            "position_hint": "center of the wheelhouse aft wall, opening onto the aft deck",
            "base_layer_decision": "base_opening",
            "render_role": "not_applicable",
            "top_down_legibility": "not_applicable"
          },
          {
            "number": 13,
            "label": "port window bank",
            "category": "opening",
            "position_hint": "port wall of the wheelhouse",
            "base_layer_decision": "base_opening",
            "render_role": "not_applicable",
            "top_down_legibility": "not_applicable"
          },
          {
            "number": 14,
            "label": "starboard window bank",
            "category": "opening",
            "position_hint": "starboard wall of the wheelhouse",
            "base_layer_decision": "base_opening",
            "render_role": "not_applicable",
            "top_down_legibility": "not_applicable"
          },
          {
            "number": 16,
            "label": "mast and navigation unit",
            "category": "prop",
            "position_hint": "centered on the wheelhouse roof footprint",
            "base_layer_decision": "base_persistent_fixture",
            "render_role": "not_applicable",
            "top_down_legibility": "not_applicable"
          },
          {
            "number": 17,
            "label": "aft deck bench",
            "category": "furniture",
            "position_hint": "against the port side of the aft deck, clear of the central walkway",
            "base_layer_decision": "base_persistent_furniture",
            "render_role": "not_applicable",
            "top_down_legibility": "not_applicable"
          },
          {
            "number": 18,
            "label": "stern boarding gate",
            "category": "opening",
            "position_hint": "center of the stern rail at the end of the main circulation path",
            "base_layer_decision": "base_opening",
            "render_role": "not_applicable",
            "top_down_legibility": "not_applicable"
          }
        ],
        "transient_markers_to_describe": [],
        "ignored_state_overlay_markers": [
          {
            "number": 19,
            "label": "hostile watcher silhouettes",
            "category": "prop",
            "position_hint": "beyond the side or stern railings in the night surveillance state; overlay only",
            "base_layer_decision": "state_overlay_transient_object",
            "render_role": "not_applicable",
            "top_down_legibility": "not_applicable"
          },
          {
            "number": 20,
            "label": "dripping blood and deck smears",
            "category": "prop",
            "position_hint": "across the aft deck near the wheelhouse entrance in the panic state; overlay only",
            "base_layer_decision": "state_overlay_plot_cue",
            "render_role": "not_applicable",
            "top_down_legibility": "not_applicable"
          },
          {
            "number": 21,
            "label": "bloodied hands in foreground",
            "category": "prop",
            "position_hint": "close foreground over the aft deck during the panic state; 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,
          6
        ],
        "dominant_target_unit_marker_number": null,
        "clean_background_expected": true,
        "diagnostics": [
          "multiple base_structural_unit markers in use_numbered_elements ([3, 4, 5, 6]); dominant_target_unit_marker_number left empty (W19B-1 lock — no lexical disambiguation)"
        ]
      },
      "L41B03": {
        "bg_id": "L41B03",
        "fp_id": "fp_l41_main",
        "use_numbered_elements": [
          1,
          2,
          5,
          6,
          9,
          10,
          12,
          13,
          14
        ],
        "ignore_numbered_elements": [],
        "base_markers_to_reference": [
          {
            "number": 1,
            "label": "shared storage and work area",
            "category": "area",
            "position_hint": "large central interior occupying most of the warehouse",
            "base_layer_decision": "base_structural_unit",
            "render_role": "not_applicable",
            "top_down_legibility": "not_applicable"
          },
          {
            "number": 2,
            "label": "loading threshold zone",
            "category": "area",
            "position_hint": "east edge of the interior immediately inside the cargo doorway",
            "base_layer_decision": "base_structural_unit",
            "render_role": "not_applicable",
            "top_down_legibility": "not_applicable"
          },
          {
            "number": 5,
            "label": "dock-facing double cargo door",
            "category": "opening",
            "position_hint": "center of the east wall opening onto the dock apron",
            "base_layer_decision": "base_opening",
            "render_role": "not_applicable",
            "top_down_legibility": "not_applicable"
          },
          {
            "number": 6,
            "label": "landside personnel door",
            "category": "opening",
            "position_hint": "southwest section of the west wall",
            "base_layer_decision": "base_opening",
            "render_role": "not_applicable",
            "top_down_legibility": "not_applicable"
          },
          {
            "number": 9,
            "label": "built-in gear racks",
            "category": "prop",
            "position_hint": "long run against the north wall, east of the service alcove",
            "base_layer_decision": "base_persistent_fixture",
            "render_role": "not_applicable",
            "top_down_legibility": "not_applicable"
          },
          {
            "number": 10,
            "label": "long worktable",
            "category": "furniture",
            "position_hint": "center of the shared area, oriented east to west",
            "base_layer_decision": "base_persistent_furniture",
            "render_role": "not_applicable",
            "top_down_legibility": "not_applicable"
          },
          {
            "number": 12,
            "label": "built-in gear lockers",
            "category": "furniture",
            "position_hint": "along the west wall north of the personnel door",
            "base_layer_decision": "base_persistent_fixture",
            "render_role": "not_applicable",
            "top_down_legibility": "not_applicable"
          },
          {
            "number": 13,
            "label": "rope and net storage bins",
            "category": "furniture",
            "position_hint": "along the south wall between the personnel door and high window",
            "base_layer_decision": "base_persistent_furniture",
            "render_role": "not_applicable",
            "top_down_legibility": "not_applicable"
          },
          {
            "number": 14,
            "label": "worktable bench",
            "category": "furniture",
            "position_hint": "parallel to the south side of the central worktable",
            "base_layer_decision": "base_persistent_furniture",
            "render_role": "not_applicable",
            "top_down_legibility": "not_applicable"
          }
        ],
        "transient_markers_to_describe": [],
        "ignored_state_overlay_markers": [],
        "target_unit_marker_numbers": [
          1,
          2
        ],
        "dominant_target_unit_marker_number": null,
        "clean_background_expected": true,
        "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)"
        ]
      },
      "L41B02": {
        "bg_id": "L41B02",
        "fp_id": "fp_l41_main",
        "use_numbered_elements": [
          1,
          2,
          4,
          5,
          8,
          10,
          13,
          14
        ],
        "ignore_numbered_elements": [],
        "base_markers_to_reference": [
          {
            "number": 1,
            "label": "shared storage and work area",
            "category": "area",
            "position_hint": "large central interior occupying most of the warehouse",
            "base_layer_decision": "base_structural_unit",
            "render_role": "not_applicable",
            "top_down_legibility": "not_applicable"
          },
          {
            "number": 2,
            "label": "loading threshold zone",
            "category": "area",
            "position_hint": "east edge of the interior immediately inside the cargo doorway",
            "base_layer_decision": "base_structural_unit",
            "render_role": "not_applicable",
            "top_down_legibility": "not_applicable"
          },
          {
            "number": 4,
            "label": "exterior dock apron",
            "category": "area",
            "position_hint": "outside the east wall beyond the cargo doorway",
            "base_layer_decision": "base_structural_unit",
            "render_role": "not_applicable",
            "top_down_legibility": "not_applicable"
          },
          {
            "number": 5,
            "label": "dock-facing double cargo door",
            "category": "opening",
            "position_hint": "center of the east wall opening onto the dock apron",
            "base_layer_decision": "base_opening",
            "render_role": "not_applicable",
            "top_down_legibility": "not_applicable"
          },
          {
            "number": 8,
            "label": "south high window",
            "category": "opening",
            "position_hint": "south wall opposite the north high window",
            "base_layer_decision": "base_opening",
            "render_role": "not_applicable",
            "top_down_legibility": "not_applicable"
          },
          {
            "number": 10,
            "label": "long worktable",
            "category": "furniture",
            "position_hint": "center of the shared area, oriented east to west",
            "base_layer_decision": "base_persistent_furniture",
            "render_role": "not_applicable",
            "top_down_legibility": "not_applicable"
          },
          {
            "number": 13,
            "label": "rope and net storage bins",
            "category": "furniture",
            "position_hint": "along the south wall between the personnel door and high window",
            "base_layer_decision": "base_persistent_furniture",
            "render_role": "not_applicable",
            "top_down_legibility": "not_applicable"
          },
          {
            "number": 14,
            "label": "worktable bench",
            "category": "furniture",
            "position_hint": "parallel to the south side of the central worktable",
            "base_layer_decision": "base_persistent_furniture",
            "render_role": "not_applicable",
            "top_down_legibility": "not_applicable"
          }
        ],
        "transient_markers_to_describe": [],
        "ignored_state_overlay_markers": [],
        "target_unit_marker_numbers": [
          1,
          2,
          4
        ],
        "dominant_target_unit_marker_number": null,
        "clean_background_expected": true,
        "diagnostics": [
          "multiple base_structural_unit markers in use_numbered_elements ([1, 2, 4]); dominant_target_unit_marker_number left empty (W19B-1 lock — no lexical disambiguation)"
        ]
      }
    }
  },
  "step_id": "floor_plan_overlay_payload",
  "run_id": "51f94e49-38ac-4177-99ab-ed4aaf0523db",
  "resolved_model": "gpt",
  "updated_at": "2026-08-04T06:09:10.269209+00:00",
  "project_config_snapshot": {}
}