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        ],
        "per_bg_render_facts_by_bg_id": {
          "L19B01": {
            "bg_id": "L19B01",
            "fp_id": "fp_l19_wheelhouse",
            "target_unit_marker_numbers": [
              1,
              10
            ],
            "dominant_target_unit_marker_number": null,
            "use_numbered_elements": [
              1,
              2,
              3,
              4,
              5,
              6,
              7,
              8,
              9,
              10,
              11,
              12
            ],
            "ignore_numbered_elements": [],
            "base_marker_numbers_to_reference": [
              1,
              2,
              3,
              4,
              5,
              6,
              7,
              8,
              9,
              10
            ],
            "transient_marker_numbers_to_describe": [
              11,
              12
            ],
            "ignored_state_overlay_marker_numbers": [],
            "clean_background_expected": false,
            "applies_to_shots": [
              "S28_Shot3",
              "S28_Shot5",
              "S28_Shot8"
            ],
            "depends_on_bg": [],
            "diagnostics": []
          }
        },
        "anchor_selection_metadata": {
          "candidate_bg_ids": [
            "L19B01"
          ],
          "selection_diagnostics": [
            "anchor selection deferred to W20B (LLM-owned per W19J pivot).",
            "no clean_background_expected=True overlay for this fp — W20F5 fallback widened candidate set to the 1 BG(s) with the fewest transient markers (2); LLM may still pick any of these but must declare the chosen anchor."
          ],
          "selected_anchor_bg_id": null,
          "ramped_fallback": true
        },
        "diagnostics": []
      }
    }
  },
  "step_id": "base_location_dossier",
  "run_id": "f3484c98-330f-47a9-bcc9-7c8c667f3731",
  "resolved_model": "gpt",
  "updated_at": "2026-07-18T06:31:03.729746+00:00",
  "project_config_snapshot": {}
}