{
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          {
            "number": 7,
            "label": "rooftop landing threshold zone",
            "category": "area",
            "position_hint": "north end of the stair route directly outside the rooftop room door",
            "base_layer_decision": "base_structural_unit"
          },
          {
            "number": 8,
            "label": "rooftop room exterior wall strip",
            "category": "area",
            "position_hint": "north or northeast edge of the rooftop landing, forming the facade beside the door",
            "base_layer_decision": "base_structural_unit"
          },
          {
            "number": 9,
            "label": "rooftop iron door opening",
            "category": "opening",
            "position_hint": "center of the rooftop room facade strip facing the rooftop landing",
            "base_layer_decision": "base_opening"
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          {
            "number": 10,
            "label": "small exterior window",
            "category": "opening",
            "position_hint": "on the rooftop room facade strip near the iron door",
            "base_layer_decision": "base_opening"
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          {
            "number": 11,
            "label": "stair guardrail and side wall",
            "category": "prop",
            "position_hint": "outer edge of both stair flights and landings",
            "base_layer_decision": "base_persistent_fixture"
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          {
            "number": 12,
            "label": "rooftop parapet wall",
            "category": "prop",
            "position_hint": "outer roof edge beyond or beside the rooftop landing",
            "base_layer_decision": "base_persistent_fixture"
          },
          {
            "number": 13,
            "label": "rooftop water tank",
            "category": "prop",
            "position_hint": "far side of the rooftop utility area, offset from the door landing",
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        ],
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            "label": "hastily parked bicycle",
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          {
            "bg_id": "L04B03",
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            "bg_id": "L04B03",
            "number": 16,
            "label": "foul odor perception zone",
            "base_layer_decision": "state_overlay_plot_cue"
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              "base_persistent_fixture": 4,
              "base_persistent_furniture": 8
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          "materials": {
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              "materials palette is an LLM-emit slot (W20B); W20A leaves this empty by contract."
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              "label": "sink counter with faucet",
              "position_hint": "west wall of the living-kitchen kitchenette run",
              "category": "prop"
            },
            {
              "number": 6,
              "label": "two-burner stovetop",
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            {
              "number": 22,
              "label": "bathroom sink and mirror",
              "position_hint": "inside the bathroom on the wall opposite or beside the door",
              "category": "prop"
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            {
              "number": 23,
              "label": "toilet and compact shower fixture",
              "position_hint": "rear side of the bathroom service zone",
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            "telephoto": 25
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            "VLM readback not invoked (W20A synthetic-only path).",
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            "label": "entry threshold zone",
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          {
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            "label": "steel entrance door",
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            "base_layer_decision": "base_opening"
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          {
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          {
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          {
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            "label": "sink counter with faucet",
            "category": "prop",
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          {
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          {
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            "label": "low TV stand and television",
            "category": "furniture",
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          {
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            "category": "furniture",
            "position_hint": "middle of the living-kitchen shared zone",
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          {
            "number": 9,
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            "position_hint": "clustered around the kitchen table in the living-kitchen",
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          {
            "number": 10,
            "label": "standing floor lamp",
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            "position_hint": "living area corner near the TV side",
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          },
          {
            "number": 11,
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            "position_hint": "north-west room off the living-kitchen",
            "base_layer_decision": "base_structural_unit"
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          {
            "number": 12,
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          {
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            "label": "mother bedroom bed",
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          {
            "number": 14,
            "label": "mother bedroom wardrobe",
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          {
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          {
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          {
            "number": 17,
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          {
            "number": 18,
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          {
            "number": 19,
            "label": "daughter bedroom storage shelf",
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            "position_hint": "inside the daughter bedroom near the door or foot of the bed",
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          {
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          {
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            "label": "scattered belongings and fallen chairs",
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          {
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          {
            "bg_id": "L05B04",
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              "label": "Forward helm console",
              "position_hint": "north wall, centered below forward windshield",
              "category": "prop"
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            {
              "number": 4,
              "label": "Steering wheel",
              "position_hint": "mounted on forward helm console, slightly starboard of center",
              "category": "prop"
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            {
              "number": 5,
              "label": "Throttle and switch cluster",
              "position_hint": "on helm console to starboard side of steering wheel",
              "category": "prop"
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            {
              "number": 6,
              "label": "Instrument and navigation display panel",
              "position_hint": "upper face of forward helm console, behind steering wheel",
              "category": "prop"
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            {
              "number": 12,
              "label": "Built-in chart shelf and cupboard",
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              "category": "prop"
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            "telephoto": 25
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          "visible_units_candidates": {},
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            "label": "Main wheelhouse interior",
            "category": "area",
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            "base_layer_decision": "base_structural_unit"
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          {
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            "base_layer_decision": "base_structural_unit"
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            "label": "Steering wheel",
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            "position_hint": "mounted on forward helm console, slightly starboard of center",
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          {
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            "label": "Throttle and switch cluster",
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          {
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            "label": "Forward wraparound windshield",
            "category": "opening",
            "position_hint": "north wall and forward corners of wheelhouse",
            "base_layer_decision": "base_opening"
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          {
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            "label": "Port side window",
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            "base_layer_decision": "base_opening"
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          {
            "number": 9,
            "label": "Starboard side window",
            "category": "opening",
            "position_hint": "east wall, long narrow window segment",
            "base_layer_decision": "base_opening"
          },
          {
            "number": 10,
            "label": "Aft sliding entry door",
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            "position_hint": "south wall, centered opening from aft deck into wheelhouse",
            "base_layer_decision": "base_opening"
          },
          {
            "number": 11,
            "label": "Narrow operator seat",
            "category": "furniture",
            "position_hint": "just aft of helm console, slightly port of center",
            "base_layer_decision": "base_persistent_furniture"
          },
          {
            "number": 12,
            "label": "Built-in chart shelf and cupboard",
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            "position_hint": "port forward corner beside helm console",
            "base_layer_decision": "base_persistent_fixture"
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          {
            "number": 13,
            "label": "Starboard interior bulkhead panel",
            "category": "area",
            "position_hint": "east interior wall surface between side window and aft entry",
            "base_layer_decision": "base_structural_unit"
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        ],
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            "bg_id": "L17B01",
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            "label": "Old photograph clue",
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          {
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            "label": "Red circular markings",
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            "anchor selection deferred to W20B (LLM-owned per W19J pivot).",
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  },
  "step_id": "base_location_dossier",
  "run_id": "ef3865ee-957d-4d4d-bbd2-031ac2abe9f7",
  "resolved_model": "gpt",
  "updated_at": "2026-07-08T04:35:36.718602+00:00",
  "project_config_snapshot": {}
}