{
  "status": "completed",
  "applicable_count": 1,
  "completed_count": 1,
  "failed_count": 0,
  "schema_version": 1,
  "config_hash": "5d2891ceb277be8d",
  "data": {
    "overlays": {
      "L01B03": {
        "bg_id": "L01B03",
        "fp_id": "fp_l01_mine_tunnel",
        "use_numbered_elements": [
          1,
          2,
          3,
          4,
          5,
          6,
          7,
          8,
          9,
          10,
          11
        ],
        "ignore_numbered_elements": [
          12,
          13,
          14,
          15,
          16,
          17,
          18,
          19,
          20,
          21
        ],
        "base_markers_to_reference": [
          {
            "number": 1,
            "label": "main tunnel passage",
            "category": "area",
            "position_hint": "central elongated west-to-east shared passage",
            "base_layer_decision": "base_structural_unit",
            "render_role": "not_applicable",
            "top_down_legibility": "not_applicable"
          },
          {
            "number": 2,
            "label": "mineral inspection zone",
            "category": "area",
            "position_hint": "east end of the tunnel against the mineral face",
            "base_layer_decision": "base_structural_unit",
            "render_role": "not_applicable",
            "top_down_legibility": "not_applicable"
          },
          {
            "number": 3,
            "label": "blast-door threshold",
            "category": "area",
            "position_hint": "west end of the tunnel around the emergency seal",
            "base_layer_decision": "base_structural_unit",
            "render_role": "not_applicable",
            "top_down_legibility": "not_applicable"
          },
          {
            "number": 4,
            "label": "collapse-prone service zone",
            "category": "area",
            "position_hint": "central-east tunnel section between the main passage and inspection zone",
            "base_layer_decision": "base_structural_unit",
            "render_role": "not_applicable",
            "top_down_legibility": "not_applicable"
          },
          {
            "number": 5,
            "label": "narrow-gauge rails",
            "category": "prop",
            "position_hint": "paired lines along the tunnel center from the west threshold toward the east end",
            "base_layer_decision": "base_persistent_fixture",
            "render_role": "not_applicable",
            "top_down_legibility": "not_applicable"
          },
          {
            "number": 6,
            "label": "support frame row",
            "category": "prop",
            "position_hint": "regular transverse frames spanning the tunnel from west to east",
            "base_layer_decision": "base_persistent_fixture",
            "render_role": "not_applicable",
            "top_down_legibility": "not_applicable"
          },
          {
            "number": 7,
            "label": "sliding blast door",
            "category": "opening",
            "position_hint": "across the west threshold with recessed side pockets",
            "base_layer_decision": "base_opening",
            "render_role": "not_applicable",
            "top_down_legibility": "not_applicable"
          },
          {
            "number": 8,
            "label": "black mineral vein",
            "category": "prop",
            "position_hint": "embedded in the east end wall of the inspection zone",
            "base_layer_decision": "base_persistent_fixture",
            "render_role": "not_applicable",
            "top_down_legibility": "not_applicable"
          },
          {
            "number": 9,
            "label": "three-sensor wall bank",
            "category": "prop",
            "position_hint": "north wall near the east mineral inspection zone",
            "base_layer_decision": "base_persistent_fixture",
            "render_role": "not_applicable",
            "top_down_legibility": "not_applicable"
          },
          {
            "number": 10,
            "label": "ceiling light row",
            "category": "prop",
            "position_hint": "along the tunnel centerline between the blast door and mineral face",
            "base_layer_decision": "base_persistent_fixture",
            "render_role": "not_applicable",
            "top_down_legibility": "not_applicable"
          },
          {
            "number": 11,
            "label": "drainage channel",
            "category": "prop",
            "position_hint": "continuous narrow channel along the south wall",
            "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": "collapsed ceiling and rock pile",
            "category": "prop",
            "position_hint": "central-east collapse-prone service zone, partly obstructing the rails",
            "base_layer_decision": "state_overlay_plot_cue",
            "render_role": "not_applicable",
            "top_down_legibility": "not_applicable"
          },
          {
            "number": 13,
            "label": "active collapse dust cloud",
            "category": "prop",
            "position_hint": "around the central-east rock fall and support frames",
            "base_layer_decision": "state_overlay_plot_cue",
            "render_role": "not_applicable",
            "top_down_legibility": "not_applicable"
          },
          {
            "number": 14,
            "label": "fallen inspection drone",
            "category": "prop",
            "position_hint": "on the floor beside the rails in the collapse zone",
            "base_layer_decision": "state_overlay_transient_object",
            "render_role": "not_applicable",
            "top_down_legibility": "not_applicable"
          },
          {
            "number": 15,
            "label": "floor-hugging metallic gas",
            "category": "prop",
            "position_hint": "flowing low through the collapse zone toward the mineral face",
            "base_layer_decision": "state_overlay_plot_cue",
            "render_role": "not_applicable",
            "top_down_legibility": "not_applicable"
          },
          {
            "number": 16,
            "label": "suspended frozen dust",
            "category": "prop",
            "position_hint": "motionless in the air throughout the collapse zone",
            "base_layer_decision": "state_overlay_plot_cue",
            "render_role": "not_applicable",
            "top_down_legibility": "not_applicable"
          },
          {
            "number": 17,
            "label": "stopped water droplet",
            "category": "prop",
            "position_hint": "near a crack and the south drainage channel in the collapse zone",
            "base_layer_decision": "state_overlay_plot_cue",
            "render_role": "not_applicable",
            "top_down_legibility": "not_applicable"
          },
          {
            "number": 18,
            "label": "blast-door rust weathering",
            "category": "prop",
            "position_hint": "spreading across the surface and seams of the west blast door",
            "base_layer_decision": "state_overlay_plot_cue",
            "render_role": "not_applicable",
            "top_down_legibility": "not_applicable"
          },
          {
            "number": 19,
            "label": "expanding tree roots",
            "category": "prop",
            "position_hint": "forcing through the blast-door seams and adjacent concrete",
            "base_layer_decision": "state_overlay_plot_cue",
            "render_role": "not_applicable",
            "top_down_legibility": "not_applicable"
          },
          {
            "number": 20,
            "label": "root-driven concrete cracks",
            "category": "prop",
            "position_hint": "around the western threshold and extending into nearby tunnel lining",
            "base_layer_decision": "state_overlay_plot_cue",
            "render_role": "not_applicable",
            "top_down_legibility": "not_applicable"
          },
          {
            "number": 21,
            "label": "stopped smartphone clock",
            "category": "prop",
            "position_hint": "with the trapped worker near the rock pile in the collapse zone",
            "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)"
        ]
      },
      "L01B02": {
        "bg_id": "L01B02",
        "fp_id": "fp_l01_mine_tunnel",
        "use_numbered_elements": [
          1,
          2,
          3,
          4,
          5,
          6,
          7,
          8,
          9,
          10,
          11,
          12,
          13,
          14,
          15
        ],
        "ignore_numbered_elements": [
          16,
          17,
          18,
          19,
          20,
          21
        ],
        "base_markers_to_reference": [
          {
            "number": 1,
            "label": "main tunnel passage",
            "category": "area",
            "position_hint": "central elongated west-to-east shared passage",
            "base_layer_decision": "base_structural_unit",
            "render_role": "not_applicable",
            "top_down_legibility": "not_applicable"
          },
          {
            "number": 2,
            "label": "mineral inspection zone",
            "category": "area",
            "position_hint": "east end of the tunnel against the mineral face",
            "base_layer_decision": "base_structural_unit",
            "render_role": "not_applicable",
            "top_down_legibility": "not_applicable"
          },
          {
            "number": 3,
            "label": "blast-door threshold",
            "category": "area",
            "position_hint": "west end of the tunnel around the emergency seal",
            "base_layer_decision": "base_structural_unit",
            "render_role": "not_applicable",
            "top_down_legibility": "not_applicable"
          },
          {
            "number": 4,
            "label": "collapse-prone service zone",
            "category": "area",
            "position_hint": "central-east tunnel section between the main passage and inspection zone",
            "base_layer_decision": "base_structural_unit",
            "render_role": "not_applicable",
            "top_down_legibility": "not_applicable"
          },
          {
            "number": 5,
            "label": "narrow-gauge rails",
            "category": "prop",
            "position_hint": "paired lines along the tunnel center from the west threshold toward the east end",
            "base_layer_decision": "base_persistent_fixture",
            "render_role": "not_applicable",
            "top_down_legibility": "not_applicable"
          },
          {
            "number": 6,
            "label": "support frame row",
            "category": "prop",
            "position_hint": "regular transverse frames spanning the tunnel from west to east",
            "base_layer_decision": "base_persistent_fixture",
            "render_role": "not_applicable",
            "top_down_legibility": "not_applicable"
          },
          {
            "number": 7,
            "label": "sliding blast door",
            "category": "opening",
            "position_hint": "across the west threshold with recessed side pockets",
            "base_layer_decision": "base_opening",
            "render_role": "not_applicable",
            "top_down_legibility": "not_applicable"
          },
          {
            "number": 8,
            "label": "black mineral vein",
            "category": "prop",
            "position_hint": "embedded in the east end wall of the inspection zone",
            "base_layer_decision": "base_persistent_fixture",
            "render_role": "not_applicable",
            "top_down_legibility": "not_applicable"
          },
          {
            "number": 9,
            "label": "three-sensor wall bank",
            "category": "prop",
            "position_hint": "north wall near the east mineral inspection zone",
            "base_layer_decision": "base_persistent_fixture",
            "render_role": "not_applicable",
            "top_down_legibility": "not_applicable"
          },
          {
            "number": 10,
            "label": "ceiling light row",
            "category": "prop",
            "position_hint": "along the tunnel centerline between the blast door and mineral face",
            "base_layer_decision": "base_persistent_fixture",
            "render_role": "not_applicable",
            "top_down_legibility": "not_applicable"
          },
          {
            "number": 11,
            "label": "drainage channel",
            "category": "prop",
            "position_hint": "continuous narrow channel along the south wall",
            "base_layer_decision": "base_persistent_fixture",
            "render_role": "not_applicable",
            "top_down_legibility": "not_applicable"
          }
        ],
        "transient_markers_to_describe": [
          {
            "number": 12,
            "label": "collapsed ceiling and rock pile",
            "category": "prop",
            "position_hint": "central-east collapse-prone service zone, partly obstructing the rails",
            "base_layer_decision": "state_overlay_plot_cue",
            "render_role": "not_applicable",
            "top_down_legibility": "not_applicable"
          },
          {
            "number": 13,
            "label": "active collapse dust cloud",
            "category": "prop",
            "position_hint": "around the central-east rock fall and support frames",
            "base_layer_decision": "state_overlay_plot_cue",
            "render_role": "not_applicable",
            "top_down_legibility": "not_applicable"
          },
          {
            "number": 14,
            "label": "fallen inspection drone",
            "category": "prop",
            "position_hint": "on the floor beside the rails in the collapse zone",
            "base_layer_decision": "state_overlay_transient_object",
            "render_role": "not_applicable",
            "top_down_legibility": "not_applicable"
          },
          {
            "number": 15,
            "label": "floor-hugging metallic gas",
            "category": "prop",
            "position_hint": "flowing low through the collapse zone toward the mineral face",
            "base_layer_decision": "state_overlay_plot_cue",
            "render_role": "not_applicable",
            "top_down_legibility": "not_applicable"
          }
        ],
        "ignored_state_overlay_markers": [
          {
            "number": 16,
            "label": "suspended frozen dust",
            "category": "prop",
            "position_hint": "motionless in the air throughout the collapse zone",
            "base_layer_decision": "state_overlay_plot_cue",
            "render_role": "not_applicable",
            "top_down_legibility": "not_applicable"
          },
          {
            "number": 17,
            "label": "stopped water droplet",
            "category": "prop",
            "position_hint": "near a crack and the south drainage channel in the collapse zone",
            "base_layer_decision": "state_overlay_plot_cue",
            "render_role": "not_applicable",
            "top_down_legibility": "not_applicable"
          },
          {
            "number": 18,
            "label": "blast-door rust weathering",
            "category": "prop",
            "position_hint": "spreading across the surface and seams of the west blast door",
            "base_layer_decision": "state_overlay_plot_cue",
            "render_role": "not_applicable",
            "top_down_legibility": "not_applicable"
          },
          {
            "number": 19,
            "label": "expanding tree roots",
            "category": "prop",
            "position_hint": "forcing through the blast-door seams and adjacent concrete",
            "base_layer_decision": "state_overlay_plot_cue",
            "render_role": "not_applicable",
            "top_down_legibility": "not_applicable"
          },
          {
            "number": 20,
            "label": "root-driven concrete cracks",
            "category": "prop",
            "position_hint": "around the western threshold and extending into nearby tunnel lining",
            "base_layer_decision": "state_overlay_plot_cue",
            "render_role": "not_applicable",
            "top_down_legibility": "not_applicable"
          },
          {
            "number": 21,
            "label": "stopped smartphone clock",
            "category": "prop",
            "position_hint": "with the trapped worker near the rock pile in the collapse zone",
            "base_layer_decision": "state_overlay_transient_object",
            "render_role": "not_applicable",
            "top_down_legibility": "not_applicable"
          }
        ],
        "target_unit_marker_numbers": [
          1,
          2,
          3,
          4
        ],
        "dominant_target_unit_marker_number": null,
        "clean_background_expected": false,
        "diagnostics": [
          "multiple base_structural_unit markers in use_numbered_elements ([1, 2, 3, 4]); dominant_target_unit_marker_number left empty (W19B-1 lock — no lexical disambiguation)"
        ]
      },
      "L01B01": {
        "bg_id": "L01B01",
        "fp_id": "fp_l01_mine_tunnel",
        "use_numbered_elements": [
          1,
          2,
          3,
          4,
          5,
          6,
          7,
          8,
          9,
          10,
          11,
          12,
          14,
          16,
          17,
          18,
          19,
          20,
          21
        ],
        "ignore_numbered_elements": [
          13,
          15
        ],
        "base_markers_to_reference": [
          {
            "number": 1,
            "label": "main tunnel passage",
            "category": "area",
            "position_hint": "central elongated west-to-east shared passage",
            "base_layer_decision": "base_structural_unit",
            "render_role": "not_applicable",
            "top_down_legibility": "not_applicable"
          },
          {
            "number": 2,
            "label": "mineral inspection zone",
            "category": "area",
            "position_hint": "east end of the tunnel against the mineral face",
            "base_layer_decision": "base_structural_unit",
            "render_role": "not_applicable",
            "top_down_legibility": "not_applicable"
          },
          {
            "number": 3,
            "label": "blast-door threshold",
            "category": "area",
            "position_hint": "west end of the tunnel around the emergency seal",
            "base_layer_decision": "base_structural_unit",
            "render_role": "not_applicable",
            "top_down_legibility": "not_applicable"
          },
          {
            "number": 4,
            "label": "collapse-prone service zone",
            "category": "area",
            "position_hint": "central-east tunnel section between the main passage and inspection zone",
            "base_layer_decision": "base_structural_unit",
            "render_role": "not_applicable",
            "top_down_legibility": "not_applicable"
          },
          {
            "number": 5,
            "label": "narrow-gauge rails",
            "category": "prop",
            "position_hint": "paired lines along the tunnel center from the west threshold toward the east end",
            "base_layer_decision": "base_persistent_fixture",
            "render_role": "not_applicable",
            "top_down_legibility": "not_applicable"
          },
          {
            "number": 6,
            "label": "support frame row",
            "category": "prop",
            "position_hint": "regular transverse frames spanning the tunnel from west to east",
            "base_layer_decision": "base_persistent_fixture",
            "render_role": "not_applicable",
            "top_down_legibility": "not_applicable"
          },
          {
            "number": 7,
            "label": "sliding blast door",
            "category": "opening",
            "position_hint": "across the west threshold with recessed side pockets",
            "base_layer_decision": "base_opening",
            "render_role": "not_applicable",
            "top_down_legibility": "not_applicable"
          },
          {
            "number": 8,
            "label": "black mineral vein",
            "category": "prop",
            "position_hint": "embedded in the east end wall of the inspection zone",
            "base_layer_decision": "base_persistent_fixture",
            "render_role": "not_applicable",
            "top_down_legibility": "not_applicable"
          },
          {
            "number": 9,
            "label": "three-sensor wall bank",
            "category": "prop",
            "position_hint": "north wall near the east mineral inspection zone",
            "base_layer_decision": "base_persistent_fixture",
            "render_role": "not_applicable",
            "top_down_legibility": "not_applicable"
          },
          {
            "number": 10,
            "label": "ceiling light row",
            "category": "prop",
            "position_hint": "along the tunnel centerline between the blast door and mineral face",
            "base_layer_decision": "base_persistent_fixture",
            "render_role": "not_applicable",
            "top_down_legibility": "not_applicable"
          },
          {
            "number": 11,
            "label": "drainage channel",
            "category": "prop",
            "position_hint": "continuous narrow channel along the south wall",
            "base_layer_decision": "base_persistent_fixture",
            "render_role": "not_applicable",
            "top_down_legibility": "not_applicable"
          }
        ],
        "transient_markers_to_describe": [
          {
            "number": 12,
            "label": "collapsed ceiling and rock pile",
            "category": "prop",
            "position_hint": "central-east collapse-prone service zone, partly obstructing the rails",
            "base_layer_decision": "state_overlay_plot_cue",
            "render_role": "not_applicable",
            "top_down_legibility": "not_applicable"
          },
          {
            "number": 14,
            "label": "fallen inspection drone",
            "category": "prop",
            "position_hint": "on the floor beside the rails in the collapse zone",
            "base_layer_decision": "state_overlay_transient_object",
            "render_role": "not_applicable",
            "top_down_legibility": "not_applicable"
          },
          {
            "number": 16,
            "label": "suspended frozen dust",
            "category": "prop",
            "position_hint": "motionless in the air throughout the collapse zone",
            "base_layer_decision": "state_overlay_plot_cue",
            "render_role": "not_applicable",
            "top_down_legibility": "not_applicable"
          },
          {
            "number": 17,
            "label": "stopped water droplet",
            "category": "prop",
            "position_hint": "near a crack and the south drainage channel in the collapse zone",
            "base_layer_decision": "state_overlay_plot_cue",
            "render_role": "not_applicable",
            "top_down_legibility": "not_applicable"
          },
          {
            "number": 18,
            "label": "blast-door rust weathering",
            "category": "prop",
            "position_hint": "spreading across the surface and seams of the west blast door",
            "base_layer_decision": "state_overlay_plot_cue",
            "render_role": "not_applicable",
            "top_down_legibility": "not_applicable"
          },
          {
            "number": 19,
            "label": "expanding tree roots",
            "category": "prop",
            "position_hint": "forcing through the blast-door seams and adjacent concrete",
            "base_layer_decision": "state_overlay_plot_cue",
            "render_role": "not_applicable",
            "top_down_legibility": "not_applicable"
          },
          {
            "number": 20,
            "label": "root-driven concrete cracks",
            "category": "prop",
            "position_hint": "around the western threshold and extending into nearby tunnel lining",
            "base_layer_decision": "state_overlay_plot_cue",
            "render_role": "not_applicable",
            "top_down_legibility": "not_applicable"
          },
          {
            "number": 21,
            "label": "stopped smartphone clock",
            "category": "prop",
            "position_hint": "with the trapped worker near the rock pile in the collapse zone",
            "base_layer_decision": "state_overlay_transient_object",
            "render_role": "not_applicable",
            "top_down_legibility": "not_applicable"
          }
        ],
        "ignored_state_overlay_markers": [
          {
            "number": 13,
            "label": "active collapse dust cloud",
            "category": "prop",
            "position_hint": "around the central-east rock fall and support frames",
            "base_layer_decision": "state_overlay_plot_cue",
            "render_role": "not_applicable",
            "top_down_legibility": "not_applicable"
          },
          {
            "number": 15,
            "label": "floor-hugging metallic gas",
            "category": "prop",
            "position_hint": "flowing low through the collapse zone toward the mineral face",
            "base_layer_decision": "state_overlay_plot_cue",
            "render_role": "not_applicable",
            "top_down_legibility": "not_applicable"
          }
        ],
        "target_unit_marker_numbers": [
          1,
          2,
          3,
          4
        ],
        "dominant_target_unit_marker_number": null,
        "clean_background_expected": false,
        "diagnostics": [
          "multiple base_structural_unit markers in use_numbered_elements ([1, 2, 3, 4]); dominant_target_unit_marker_number left empty (W19B-1 lock — no lexical disambiguation)"
        ]
      },
      "L02B01": {
        "bg_id": "L02B01",
        "fp_id": "fp_l02_reclaimed_tunnel",
        "use_numbered_elements": [
          1,
          3,
          4,
          5,
          6,
          7,
          8,
          10,
          11,
          12,
          13
        ],
        "ignore_numbered_elements": [],
        "base_markers_to_reference": [
          {
            "number": 1,
            "label": "main tunnel",
            "category": "area",
            "position_hint": "central linear passage between the threshold and east work face",
            "base_layer_decision": "base_structural_unit",
            "render_role": "not_applicable",
            "top_down_legibility": "not_applicable"
          },
          {
            "number": 3,
            "label": "egress threshold",
            "category": "area",
            "position_hint": "west end between the main tunnel and exterior approach",
            "base_layer_decision": "base_structural_unit",
            "render_role": "not_applicable",
            "top_down_legibility": "not_applicable"
          },
          {
            "number": 4,
            "label": "exterior approach",
            "category": "area",
            "position_hint": "far west beyond the outer mine portal",
            "base_layer_decision": "base_structural_unit",
            "render_role": "not_applicable",
            "top_down_legibility": "not_applicable"
          },
          {
            "number": 5,
            "label": "blast door",
            "category": "opening",
            "position_hint": "west side of the threshold, spanning the reinforced tunnel frame",
            "base_layer_decision": "base_opening",
            "render_role": "not_applicable",
            "top_down_legibility": "not_applicable"
          },
          {
            "number": 6,
            "label": "outer mine portal",
            "category": "opening",
            "position_hint": "far west end of the threshold, opening toward the exterior approach",
            "base_layer_decision": "base_opening",
            "render_role": "not_applicable",
            "top_down_legibility": "not_applicable"
          },
          {
            "number": 7,
            "label": "wall sensor bank",
            "category": "prop",
            "position_hint": "distributed along both walls of the main tunnel, represented by one grouped marker",
            "base_layer_decision": "base_persistent_fixture",
            "render_role": "not_applicable",
            "top_down_legibility": "not_applicable"
          },
          {
            "number": 8,
            "label": "fixed tunnel lights",
            "category": "prop",
            "position_hint": "linear row along the main tunnel centerline, represented by one grouped marker",
            "base_layer_decision": "base_persistent_fixture",
            "render_role": "not_applicable",
            "top_down_legibility": "not_applicable"
          }
        ],
        "transient_markers_to_describe": [
          {
            "number": 10,
            "label": "giant root invasion",
            "category": "prop",
            "position_hint": "crossing the west threshold, blast door, and exit route",
            "base_layer_decision": "state_overlay_plot_cue",
            "render_role": "not_applicable",
            "top_down_legibility": "not_applicable"
          },
          {
            "number": 11,
            "label": "split concrete",
            "category": "prop",
            "position_hint": "reinforced concrete around the blast-door frame and west tunnel walls",
            "base_layer_decision": "state_overlay_plot_cue",
            "render_role": "not_applicable",
            "top_down_legibility": "not_applicable"
          },
          {
            "number": 12,
            "label": "torn blast-door metal",
            "category": "prop",
            "position_hint": "damaged leaf and frame of the west blast door",
            "base_layer_decision": "state_overlay_plot_cue",
            "render_role": "not_applicable",
            "top_down_legibility": "not_applicable"
          },
          {
            "number": 13,
            "label": "advanced door corrosion",
            "category": "prop",
            "position_hint": "across the exposed surfaces of the west blast door",
            "base_layer_decision": "state_overlay_plot_cue",
            "render_role": "not_applicable",
            "top_down_legibility": "not_applicable"
          }
        ],
        "ignored_state_overlay_markers": [],
        "target_unit_marker_numbers": [
          1,
          3,
          4
        ],
        "dominant_target_unit_marker_number": null,
        "clean_background_expected": false,
        "diagnostics": [
          "multiple base_structural_unit markers in use_numbered_elements ([1, 3, 4]); dominant_target_unit_marker_number left empty (W19B-1 lock — no lexical disambiguation)"
        ]
      }
    }
  },
  "step_id": "floor_plan_overlay_payload",
  "run_id": "51dcd581-9204-4a34-9308-e513bbe47434",
  "resolved_model": "gpt",
  "updated_at": "2026-09-04T17:33:45.498893+00:00",
  "project_config_snapshot": {}
}