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FormulaCascade_Benchmark_eval_200/T1_FRONTIER/internal/FCB-00075/audit.json

@@ -0,0 +1,442 @@
+{
+  "gate": {
+    "pre_nl_gate": {
+      "gate_label": "GATE_PASS",
+      "gate_pass": true,
+      "hard_fails": 0,
+      "warns": 0,
+      "checks": [
+        {
+          "check": "final_target_gate",
+          "pass": true,
+          "detail": "final_target has 5 cells"
+        },
+        {
+          "check": "header_grounding",
+          "pass": true,
+          "severity": "pass",
+          "detail": "1/1 final regions have column_header"
+        },
+        {
+          "check": "mask_consistency",
+          "pass": true,
+          "detail": "mask_last=6457B, src=11041B"
+        },
+        {
+          "check": "dirty_family",
+          "pass": true,
+          "detail": "0 dirty cells"
+        },
+        {
+          "check": "ratio_gate",
+          "pass": true,
+          "detail": "ratio=3.0 (total=15, final=5)"
+        },
+        {
+          "check": "dedup_gate",
+          "pass": true,
+          "detail": "0 duplicate cells across layers"
+        },
+        {
+          "check": "gt_uniqueness",
+          "pass": true,
+          "detail": "5 unique values across 5 cells"
+        },
+        {
+          "check": "tail_artifact",
+          "pass": true,
+          "detail": "0 bad values"
+        },
+        {
+          "check": "unrecoverable_leaf",
+          "pass": true,
+          "detail": "clean",
+          "hidden_const_cells": []
+        },
+        {
+          "check": "adjacent_column_leak",
+          "pass": true,
+          "detail": "clean"
+        },
+        {
+          "check": "header_name_accuracy",
+          "pass": true,
+          "detail": "clean"
+        },
+        {
+          "check": "duplicate_lookup_tie_break",
+          "pass": true,
+          "detail": "no lookup formulas"
+        },
+        {
+          "check": "src_chain_integrity",
+          "pass": true,
+          "severity": "ok",
+          "detail": "clean",
+          "sub_checks": {
+            "error_cells": {
+              "pass": true,
+              "count": 0,
+              "cells": []
+            },
+            "external_refs": {
+              "pass": true,
+              "count": 0,
+              "cells": []
+            },
+            "volatile_funcs": {
+              "pass": true,
+              "count": 0,
+              "cells": []
+            },
+            "missing_sheets": {
+              "pass": true,
+              "count": 0,
+              "sheets": []
+            },
+            "circular_refs": {
+              "pass": true,
+              "cycle_cells": []
+            }
+          }
+        },
+        {
+          "check": "uniqueness_deep",
+          "pass": true,
+          "severity": "ok",
+          "detail": "clean"
+        }
+      ]
+    },
+    "post_nl_validate": {
+      "validate_label": "SOFT_WARN",
+      "validate_pass": true,
+      "hard_fails": 0,
+      "soft_warns": 1,
+      "checks": [
+        {
+          "check": "cell_range_match",
+          "pass": false,
+          "detail": "contract=11, prompt=1, missing=8",
+          "missing_ranges": [
+            "K5",
+            "L5",
+            "M5",
+            "N5",
+            "O5",
+            "P5",
+            "Q5",
+            "R5"
+          ],
+          "severity": "SOFT_WARN"
+        },
+        {
+          "check": "cell_count_match",
+          "pass": true,
+          "detail": "no explicit total found; skipping (natural format)",
+          "severity": "OK"
+        },
+        {
+          "check": "step_count_match",
+          "pass": true,
+          "detail": "contract=10, no explicit steps found (v5 natural format)",
+          "severity": "OK"
+        },
+        {
+          "check": "sheet_name_match",
+          "pass": true,
+          "detail": "contract=['Tabela'], missing=[]",
+          "severity": "OK"
+        },
+        {
+          "check": "no_formula_leak",
+          "pass": true,
+          "detail": "0 formula leaks",
+          "severity": "OK"
+        },
+        {
+          "check": "no_value_leak",
+          "pass": true,
+          "detail": "0 value leaks out of 5 GT cells",
+          "severity": "OK"
+        },
+        {
+          "check": "final_target_first",
+          "pass": true,
+          "detail": "no explicit final target marker (natural format)",
+          "severity": "OK"
+        },
+        {
+          "check": "output_format",
+          "pass": true,
+          "detail": "output format found",
+          "severity": "OK"
+        },
+        {
+          "check": "header_in_prompt",
+          "pass": true,
+          "detail": "no column headers found in prompt",
+          "severity": "OK"
+        },
+        {
+          "check": "hint_specificity",
+          "pass": true,
+          "detail": "clean",
+          "severity": "OK"
+        },
+        {
+          "check": "evidence_scope",
+          "pass": true,
+          "detail": "no cross-sheet refs in GT",
+          "severity": "OK"
+        },
+        {
+          "check": "exemplar_consistency",
+          "pass": true,
+          "severity": "OK",
+          "detail": "checked 10 col groups; CONFLICTS: Tabela!R6: visible='=+R5+1' vs GT pattern='=+Q#+#.#'; Tabela!R7: visible='=+R6+1' vs GT pattern='=+Q#+#.#'"
+        },
+        {
+          "check": "nl_gt_operation_consistency",
+          "pass": true,
+          "detail": "GT funcs: []",
+          "severity": "OK"
+        },
+        {
+          "check": "unmatched_default_rule",
+          "pass": true,
+          "detail": "no default-rule phrase found in NL",
+          "severity": "OK"
+        },
+        {
+          "check": "volatile_function_freeze",
+          "pass": true,
+          "detail": "volatile_cells=0",
+          "severity": "OK"
+        },
+        {
+          "check": "direct_answer_leakage",
+          "pass": true,
+          "detail": "0 leaks out of 15 GT cells (0%)",
+          "severity": "OK"
+        }
+      ]
+    },
+    "pre_nl_local": {
+      "local_total": 58,
+      "local_label": "PENDING_NL",
+      "hard_fail_flags": [],
+      "warnings": [
+        "nl_missing"
+      ],
+      "local_subscores": {
+        "family_clean": 25,
+        "target_integrity": 15,
+        "taxonomy": 10,
+        "semantic_signal": 8,
+        "nl_schema": 0,
+        "target_alignment": 0,
+        "business_specificity": 0,
+        "nl_risk": 0
+      }
+    }
+  },
+  "verify": {
+    "uniqueness": {
+      "total_gt_cells": 15,
+      "total_non_none": 15,
+      "block_reasons": [],
+      "warnings": [],
+      "checks": {
+        "rank_tie_risk": {
+          "rank_cells": 0,
+          "tie_issues": 0,
+          "details": []
+        },
+        "trivial_gt": {
+          "issues": []
+        },
+        "gt_type_consistency": {
+          "types": {
+            "float": 15
+          },
+          "mixed": false
+        },
+        "empty_gt": {
+          "count": 0,
+          "details": []
+        }
+      }
+    },
+    "src_chain": {
+      "hard_block": false,
+      "block_reasons": [],
+      "checks": {
+        "error_cells": {
+          "pass": true,
+          "count": 0,
+          "cells": []
+        },
+        "external_refs": {
+          "pass": true,
+          "count": 0,
+          "cells": []
+        },
+        "volatile_funcs": {
+          "pass": true,
+          "count": 0,
+          "cells": []
+        },
+        "missing_sheets": {
+          "pass": true,
+          "count": 0,
+          "sheets": []
+        },
+        "circular_refs": {
+          "pass": true,
+          "cycle_cells": []
+        }
+      },
+      "required_chain_scope": {
+        "external_ref_in_required_chain": 0,
+        "external_ref_in_other": 0,
+        "error_cells_in_required_chain": 0,
+        "error_cells_in_other": 0,
+        "required_chain_cells": 15
+      }
+    },
+    "solver_visibility": {
+      "contract_cells": 15,
+      "total_masked": 15,
+      "total_visible": 60,
+      "depth": 11,
+      "block_reasons": [],
+      "warnings": [],
+      "checks": {
+        "broken_chains": {
+          "count": 0,
+          "checked": 15,
+          "details": []
+        },
+        "orphan_masks": {
+          "count": 0,
+          "details": []
+        },
+        "self_contained": {
+          "missing_sheets": []
+        }
+      }
+    },
+    "exemplar": {
+      "soft_block": true,
+      "block_reasons": [
+        "zero_exemplar:1_patterns"
+      ],
+      "checks": {
+        "pattern_coverage": {
+          "pass": false,
+          "total_gt_patterns": 2,
+          "total_src_patterns": 2,
+          "zero_exemplar_count": 1,
+          "low_exemplar_count": 0
+        },
+        "zero_exemplar_patterns": {
+          "pass": false,
+          "patterns": [
+            {
+              "pattern": "=+REF+0.01",
+              "total_in_src": 10,
+              "sample_formula": "=+I5+0.01"
+            }
+          ]
+        },
+        "low_exemplar_patterns": {
+          "pass": true,
+          "patterns": []
+        },
+        "func_coverage": {
+          "arithmetic": {
+            "total_masked": 15,
+            "visible_exemplars": 50
+          }
+        }
+      }
+    },
+    "shortcut": {
+      "shortcut_risk": 0.5,
+      "flags": [
+        {
+          "code": "SC2",
+          "description": "Arithmetic sequence in Tabela!S: step=1.0",
+          "affected_cells": 5,
+          "severity": "medium"
+        }
+      ]
+    },
+    "release_audit": {
+      "surface_single_sheet": true,
+      "surface_sheets": [
+        "Tabela"
+      ],
+      "cross_sheet_actual": false,
+      "cross_sheet_ref_count": 0,
+      "referenced_sheets": [],
+      "target_shape": "summary_block",
+      "layer_sizes": [
+        5,
+        1,
+        1,
+        1,
+        1,
+        1,
+        1,
+        1,
+        1,
+        1,
+        1
+      ],
+      "mask_last_total_cells": 15,
+      "layer_growth_ratios": [
+        0.2,
+        1.0,
+        1.0,
+        1.0,
+        1.0,
+        1.0,
+        1.0,
+        1.0,
+        1.0,
+        1.0
+      ],
+      "pattern_dominance_ratio": 0.6667,
+      "visible_clone_regions": 0,
+      "nearby_visible_clone_regions": 0,
+      "nearby_visible_clone_rows": 0,
+      "nearby_visible_clone_ratio": 0.0,
+      "promptability_score": 1.0,
+      "release_reasons": [],
+      "release_verdict": "KEEP"
+    }
+  },
+  "difficulty": {
+    "task_id": "single_sheet__dag_c67834810109",
+    "difficulty_score": 62.1,
+    "difficulty": "hard",
+    "depth": 11,
+    "total_masked": 15,
+    "is_cross_sheet": false,
+    "unique_patterns": 11,
+    "avg_complexity": 4.0,
+    "cross_refs": 0,
+    "visible_exemplar_ratio": 0.167,
+    "score_breakdown": {
+      "depth": 25,
+      "cross_sheet": 0,
+      "cell_count": 7.8,
+      "patterns": 15,
+      "complexity": 6.0,
+      "cross_refs": 0,
+      "vis_penalty": 8.3
+    }
+  }
+}

FormulaCascade_Benchmark_eval_200/T1_FRONTIER/internal/FCB-00075/ground_truth_full.json

@@ -0,0 +1,137 @@
+[
+  {
+    "sheet": "Tabela",
+    "col": "S",
+    "row": 6,
+    "formula": "=+S5+1",
+    "cached_value": 2.2,
+    "pattern_id": "pf_0000",
+    "layer": 1
+  },
+  {
+    "sheet": "Tabela",
+    "col": "S",
+    "row": 7,
+    "formula": "=+S6+1",
+    "cached_value": 3.2,
+    "pattern_id": "pf_0000",
+    "layer": 1
+  },
+  {
+    "sheet": "Tabela",
+    "col": "S",
+    "row": 8,
+    "formula": "=+S7+1",
+    "cached_value": 4.2,
+    "pattern_id": "pf_0000",
+    "layer": 1
+  },
+  {
+    "sheet": "Tabela",
+    "col": "S",
+    "row": 9,
+    "formula": "=+S8+1",
+    "cached_value": 5.2,
+    "pattern_id": "pf_0000",
+    "layer": 1
+  },
+  {
+    "sheet": "Tabela",
+    "col": "S",
+    "row": 10,
+    "formula": "=+S9+1",
+    "cached_value": 6.2,
+    "pattern_id": "pf_0000",
+    "layer": 1
+  },
+  {
+    "sheet": "Tabela",
+    "col": "S",
+    "row": 5,
+    "formula": "=+R5+0.01",
+    "cached_value": 1.2000000000000002,
+    "pattern_id": "pf_0001",
+    "layer": 2
+  },
+  {
+    "sheet": "Tabela",
+    "col": "R",
+    "row": 5,
+    "formula": "=+Q5+0.01",
+    "cached_value": 1.1900000000000002,
+    "pattern_id": "pf_0001",
+    "layer": 3
+  },
+  {
+    "sheet": "Tabela",
+    "col": "Q",
+    "row": 5,
+    "formula": "=+P5+0.01",
+    "cached_value": 1.1800000000000002,
+    "pattern_id": "pf_0001",
+    "layer": 4
+  },
+  {
+    "sheet": "Tabela",
+    "col": "P",
+    "row": 5,
+    "formula": "=+O5+0.01",
+    "cached_value": 1.1700000000000002,
+    "pattern_id": "pf_0001",
+    "layer": 5
+  },
+  {
+    "sheet": "Tabela",
+    "col": "O",
+    "row": 5,
+    "formula": "=+N5+0.01",
+    "cached_value": 1.1600000000000001,
+    "pattern_id": "pf_0001",
+    "layer": 6
+  },
+  {
+    "sheet": "Tabela",
+    "col": "N",
+    "row": 5,
+    "formula": "=+M5+0.01",
+    "cached_value": 1.1500000000000001,
+    "pattern_id": "pf_0001",
+    "layer": 7
+  },
+  {
+    "sheet": "Tabela",
+    "col": "M",
+    "row": 5,
+    "formula": "=+L5+0.01",
+    "cached_value": 1.1400000000000001,
+    "pattern_id": "pf_0001",
+    "layer": 8
+  },
+  {
+    "sheet": "Tabela",
+    "col": "L",
+    "row": 5,
+    "formula": "=+K5+0.01",
+    "cached_value": 1.1300000000000001,
+    "pattern_id": "pf_0001",
+    "layer": 9
+  },
+  {
+    "sheet": "Tabela",
+    "col": "K",
+    "row": 5,
+    "formula": "=+J5+0.01",
+    "cached_value": 1.12,
+    "pattern_id": "pf_0001",
+    "layer": 10
+  },
+  {
+    "sheet": "Tabela",
+    "col": "J",
+    "row": 5,
+    "formula": "=+I5+0.01",
+    "cached_value": 1.11,
+    "pattern_id": "pf_0001",
+    "layer": 11
+  }
+]

FormulaCascade_Benchmark_eval_200/T1_FRONTIER/internal/FCB-00075/ground_truth_target.json

@@ -0,0 +1,42 @@
+[
+  {
+    "sheet": "Tabela",
+    "col": "S",
+    "row": 6,
+    "formula": "=+S5+1",
+    "cached_value": 2.2,
+    "pattern_id": "pf_0000"
+  },
+  {
+    "sheet": "Tabela",
+    "col": "S",
+    "row": 7,
+    "formula": "=+S6+1",
+    "cached_value": 3.2,
+    "pattern_id": "pf_0000"
+  },
+  {
+    "sheet": "Tabela",
+    "col": "S",
+    "row": 8,
+    "formula": "=+S7+1",
+    "cached_value": 4.2,
+    "pattern_id": "pf_0000"
+  },
+  {
+    "sheet": "Tabela",
+    "col": "S",
+    "row": 9,
+    "formula": "=+S8+1",
+    "cached_value": 5.2,
+    "pattern_id": "pf_0000"
+  },
+  {
+    "sheet": "Tabela",
+    "col": "S",
+    "row": 10,
+    "formula": "=+S9+1",
+    "cached_value": 6.2,
+    "pattern_id": "pf_0000"
+  }
+]

FormulaCascade_Benchmark_eval_200/T1_FRONTIER/internal/FCB-00075/target_contract.json

@@ -0,0 +1,217 @@
+{
+  "task_id": "single_sheet__dag_c67834810109",
+  "category": "single_sheet",
+  "depth": 11,
+  "final_target": {
+    "regions": [
+      {
+        "sheet": "Tabela",
+        "column": "S",
+        "column_header": "Valor10",
+        "cell_range": "S6:S10",
+        "cell_count": 5,
+        "rows": [
+          6,
+          7,
+          8,
+          9,
+          10
+        ],
+        "first_row_label": "",
+        "last_row_label": ""
+      }
+    ],
+    "cell_count": 5,
+    "formula_families": [
+      "arithmetic"
+    ]
+  },
+  "prerequisite_steps": [
+    {
+      "layer": 11,
+      "regions": [
+        {
+          "sheet": "Tabela",
+          "column": "J",
+          "column_header": "Valor1",
+          "cell_range": "J5",
+          "cell_count": 1,
+          "rows": [
+            5
+          ],
+          "first_row_label": "",
+          "last_row_label": ""
+        }
+      ],
+      "cell_count": 1
+    },
+    {
+      "layer": 10,
+      "regions": [
+        {
+          "sheet": "Tabela",
+          "column": "K",
+          "column_header": "Valor2",
+          "cell_range": "K5",
+          "cell_count": 1,
+          "rows": [
+            5
+          ],
+          "first_row_label": "",
+          "last_row_label": ""
+        }
+      ],
+      "cell_count": 1
+    },
+    {
+      "layer": 9,
+      "regions": [
+        {
+          "sheet": "Tabela",
+          "column": "L",
+          "column_header": "Valor3",
+          "cell_range": "L5",
+          "cell_count": 1,
+          "rows": [
+            5
+          ],
+          "first_row_label": "",
+          "last_row_label": ""
+        }
+      ],
+      "cell_count": 1
+    },
+    {
+      "layer": 8,
+      "regions": [
+        {
+          "sheet": "Tabela",
+          "column": "M",
+          "column_header": "Valor4",
+          "cell_range": "M5",
+          "cell_count": 1,
+          "rows": [
+            5
+          ],
+          "first_row_label": "",
+          "last_row_label": ""
+        }
+      ],
+      "cell_count": 1
+    },
+    {
+      "layer": 7,
+      "regions": [
+        {
+          "sheet": "Tabela",
+          "column": "N",
+          "column_header": "Valor5",
+          "cell_range": "N5",
+          "cell_count": 1,
+          "rows": [
+            5
+          ],
+          "first_row_label": "",
+          "last_row_label": ""
+        }
+      ],
+      "cell_count": 1
+    },
+    {
+      "layer": 6,
+      "regions": [
+        {
+          "sheet": "Tabela",
+          "column": "O",
+          "column_header": "Valor6",
+          "cell_range": "O5",
+          "cell_count": 1,
+          "rows": [
+            5
+          ],
+          "first_row_label": "",
+          "last_row_label": ""
+        }
+      ],
+      "cell_count": 1
+    },
+    {
+      "layer": 5,
+      "regions": [
+        {
+          "sheet": "Tabela",
+          "column": "P",
+          "column_header": "Valor7",
+          "cell_range": "P5",
+          "cell_count": 1,
+          "rows": [
+            5
+          ],
+          "first_row_label": "",
+          "last_row_label": ""
+        }
+      ],
+      "cell_count": 1
+    },
+    {
+      "layer": 4,
+      "regions": [
+        {
+          "sheet": "Tabela",
+          "column": "Q",
+          "column_header": "Valor8",
+          "cell_range": "Q5",
+          "cell_count": 1,
+          "rows": [
+            5
+          ],
+          "first_row_label": "",
+          "last_row_label": ""
+        }
+      ],
+      "cell_count": 1
+    },
+    {
+      "layer": 3,
+      "regions": [
+        {
+          "sheet": "Tabela",
+          "column": "R",
+          "column_header": "Valor9",
+          "cell_range": "R5",
+          "cell_count": 1,
+          "rows": [
+            5
+          ],
+          "first_row_label": "",
+          "last_row_label": ""
+        }
+      ],
+      "cell_count": 1
+    },
+    {
+      "layer": 2,
+      "regions": [
+        {
+          "sheet": "Tabela",
+          "column": "S",
+          "column_header": "Valor10",
+          "cell_range": "S5",
+          "cell_count": 1,
+          "rows": [
+            5
+          ],
+          "first_row_label": "",
+          "last_row_label": ""
+        }
+      ],
+      "cell_count": 1
+    }
+  ],
+  "total_prerequisite_cells": 10,
+  "total_masked_cells": 15,
+  "ratio_total_vs_final": 3.0,
+  "sheets_involved": [
+    "Tabela"
+  ]
+}

FormulaCascade_Benchmark_eval_200/T1_FRONTIER/internal/FCB-00078/audit.json

@@ -0,0 +1,461 @@
+{
+  "gate": {
+    "pre_nl_gate": {
+      "gate_label": "GATE_PASS",
+      "gate_pass": true,
+      "hard_fails": 0,
+      "warns": 0,
+      "checks": [
+        {
+          "check": "final_target_gate",
+          "pass": true,
+          "detail": "final_target has 8 cells"
+        },
+        {
+          "check": "header_grounding",
+          "pass": true,
+          "severity": "pass",
+          "detail": "1/1 final regions have column_header"
+        },
+        {
+          "check": "mask_consistency",
+          "pass": true,
+          "detail": "mask_last=8993B, src=14311B"
+        },
+        {
+          "check": "dirty_family",
+          "pass": true,
+          "detail": "0 dirty cells"
+        },
+        {
+          "check": "ratio_gate",
+          "pass": true,
+          "detail": "ratio=11.8 (total=94, final=8) [WARN: high mask ratio]"
+        },
+        {
+          "check": "dedup_gate",
+          "pass": true,
+          "detail": "0 duplicate cells across layers"
+        },
+        {
+          "check": "gt_uniqueness",
+          "pass": true,
+          "detail": "35 unique values across 94 cells"
+        },
+        {
+          "check": "tail_artifact",
+          "pass": true,
+          "detail": "0 bad values"
+        },
+        {
+          "check": "unrecoverable_leaf",
+          "pass": true,
+          "detail": "clean",
+          "hidden_const_cells": []
+        },
+        {
+          "check": "adjacent_column_leak",
+          "pass": true,
+          "detail": "leaked: Sheet1!O→P(6/8), Sheet1!H→G(6/10), Sheet1!G→H(6/10), Sheet1!I→H(6/10), Sheet1!H→I(6/10)"
+        },
+        {
+          "check": "header_name_accuracy",
+          "pass": true,
+          "detail": "clean"
+        },
+        {
+          "check": "duplicate_lookup_tie_break",
+          "pass": true,
+          "detail": "no lookup formulas"
+        },
+        {
+          "check": "src_chain_integrity",
+          "pass": true,
+          "severity": "ok",
+          "detail": "clean",
+          "sub_checks": {
+            "error_cells": {
+              "pass": true,
+              "count": 0,
+              "cells": []
+            },
+            "external_refs": {
+              "pass": true,
+              "count": 0,
+              "cells": []
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+            "volatile_funcs": {
+              "pass": true,
+              "count": 0,
+              "cells": []
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+              "count": 0,
+              "sheets": []
+            },
+            "circular_refs": {
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+              "cycle_cells": []
+            }
+          }
+        },
+        {
+          "check": "uniqueness_deep",
+          "pass": true,
+          "severity": "ok",
+          "detail": "clean"
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+      "soft_warns": 1,
+      "checks": [
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+            "H3:H12",
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+            "J3:J12",
+            "K3:K12",
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+            "M12",
+            "M3:M6",
+            "M8:M10",
+            "N12"
+          ],
+          "severity": "SOFT_WARN"
+        },
+        {
+          "check": "cell_count_match",
+          "pass": true,
+          "detail": "no explicit total found; skipping (natural format)",
+          "severity": "OK"
+        },
+        {
+          "check": "step_count_match",
+          "pass": true,
+          "detail": "contract=10, no explicit steps found (v5 natural format)",
+          "severity": "OK"
+        },
+        {
+          "check": "sheet_name_match",
+          "pass": true,
+          "detail": "contract=['Sheet1'], missing=[]",
+          "severity": "OK"
+        },
+        {
+          "check": "no_formula_leak",
+          "pass": true,
+          "detail": "0 formula leaks",
+          "severity": "OK"
+        },
+        {
+          "check": "no_value_leak",
+          "pass": true,
+          "detail": "0 value leaks out of 8 GT cells",
+          "severity": "OK"
+        },
+        {
+          "check": "final_target_first",
+          "pass": true,
+          "detail": "no explicit final target marker (natural format)",
+          "severity": "OK"
+        },
+        {
+          "check": "output_format",
+          "pass": true,
+          "detail": "output format found",
+          "severity": "OK"
+        },
+        {
+          "check": "header_in_prompt",
+          "pass": true,
+          "detail": "no column headers found in prompt",
+          "severity": "OK"
+        },
+        {
+          "check": "hint_specificity",
+          "pass": true,
+          "detail": "clean",
+          "severity": "OK"
+        },
+        {
+          "check": "evidence_scope",
+          "pass": true,
+          "detail": "no cross-sheet refs in GT",
+          "severity": "OK"
+        },
+        {
+          "check": "exemplar_consistency",
+          "pass": true,
+          "severity": "OK",
+          "detail": "checked 11 col groups"
+        },
+        {
+          "check": "nl_gt_operation_consistency",
+          "pass": true,
+          "detail": "GT funcs: ['AND', 'EDATE', 'IF', 'OR']",
+          "severity": "OK"
+        },
+        {
+          "check": "unmatched_default_rule",
+          "pass": true,
+          "detail": "no default-rule phrase found in NL",
+          "severity": "OK"
+        },
+        {
+          "check": "volatile_function_freeze",
+          "pass": true,
+          "detail": "volatile_cells=0",
+          "severity": "OK"
+        },
+        {
+          "check": "direct_answer_leakage",
+          "pass": true,
+          "detail": "0 leaks out of 94 GT cells (0%)",
+          "severity": "OK"
+        }
+      ]
+    },
+    "pre_nl_local": {
+      "local_total": 58,
+      "local_label": "PENDING_NL",
+      "hard_fail_flags": [],
+      "warnings": [
+        "nl_missing"
+      ],
+      "local_subscores": {
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+        "target_integrity": 15,
+        "taxonomy": 10,
+        "semantic_signal": 8,
+        "nl_schema": 0,
+        "target_alignment": 0,
+        "business_specificity": 0,
+        "nl_risk": 0
+      }
+    }
+  },
+  "verify": {
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+      "total_non_none": 94,
+      "block_reasons": [],
+      "warnings": [
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+      ],
+      "checks": {
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+          "tie_issues": 0,
+          "details": []
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+        "trivial_gt": {
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+        },
+        "gt_type_consistency": {
+          "types": {
+            "int": 60,
+            "str": 34
+          },
+          "mixed": true
+        },
+        "empty_gt": {
+          "count": 0,
+          "details": []
+        }
+      }
+    },
+    "src_chain": {
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+      "block_reasons": [],
+      "checks": {
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+          "count": 0,
+          "cells": []
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+        "external_refs": {
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+          "count": 0,
+          "cells": []
+        },
+        "volatile_funcs": {
+          "pass": true,
+          "count": 0,
+          "cells": []
+        },
+        "missing_sheets": {
+          "pass": true,
+          "count": 0,
+          "sheets": []
+        },
+        "circular_refs": {
+          "pass": true,
+          "cycle_cells": []
+        }
+      },
+      "required_chain_scope": {
+        "external_ref_in_required_chain": 0,
+        "external_ref_in_other": 0,
+        "error_cells_in_required_chain": 0,
+        "error_cells_in_other": 0,
+        "required_chain_cells": 94
+      }
+    },
+    "solver_visibility": {
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+      "total_masked": 94,
+      "total_visible": 163,
+      "depth": 11,
+      "block_reasons": [],
+      "warnings": [],
+      "checks": {
+        "broken_chains": {
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+          "checked": 94,
+          "details": []
+        },
+        "orphan_masks": {
+          "count": 0,
+          "details": []
+        },
+        "self_contained": {
+          "missing_sheets": []
+        }
+      }
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+    "exemplar": {
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+      "block_reasons": [
+        "zero_exemplar:4_patterns"
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+      "checks": {
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+          "total_gt_patterns": 4,
+          "total_src_patterns": 14,
+          "zero_exemplar_count": 4,
+          "low_exemplar_count": 0
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+          "patterns": [
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+              "sample_formula": "=IF(G3=0,0,EDATE(G3,6))"
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+            {
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+              "sample_formula": "=IF(OR(S4=\"3-Years\",S4=\"5-Years\"),EDATE(F4,6),0)"
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+              "pattern": "=+EDATE(REF,12)",
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+          "patterns": []
+        },
+        "func_coverage": {
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+            "visible_exemplars": 30
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+          "EDATE": {
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+            "visible_exemplars": 8
+          }
+        }
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+    "shortcut": {
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+      "flags": []
+    },
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+      "surface_sheets": [
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+      "nearby_visible_clone_rows": 0,
+      "nearby_visible_clone_ratio": 0.0,
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+      "release_reasons": [
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+      "release_verdict": "KEEP_WITH_FIXES"
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+  "difficulty": {
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+    "difficulty_score": 77.0,
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+    "score_breakdown": {
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+      "complexity": 15,
+      "cross_refs": 0,
+      "vis_penalty": 8.9
+    }
+  }
+}

FormulaCascade_Benchmark_eval_200/T1_FRONTIER/internal/FCB-00078/ground_truth_full.json

@@ -0,0 +1,848 @@
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+      "new_eval_cells": 8,
+      "total_masked_cells": 16
+    },
+    {
+      "layer_index": 3,
+      "new_pattern_groups": [
+        {
+          "region_ids": [
+            "rg_00008",
+            "rg_00009",
+            "rg_00010"
+          ],
+          "sheet": "Sheet1",
+          "col": "N",
+          "rows": [
+            3,
+            4,
+            5,
+            6,
+            8,
+            9,
+            10,
+            12
+          ],
+          "row_ranges": "3-6,8-10,12",
+          "row_count": 8,
+          "pattern_id": "pf_0000",
+          "normalized_pattern": "=IF([C-1,R]=0,0,EDATE([C-1,R],6))",
+          "sample_formula": "=IF(M3=0,0,EDATE(M3,6))"
+        }
+      ],
+      "new_eval_cells": 8,
+      "total_masked_cells": 24
+    },
+    {
+      "layer_index": 4,
+      "new_pattern_groups": [
+        {
+          "region_ids": [
+            "rg_00005",
+            "rg_00006",
+            "rg_00007"
+          ],
+          "sheet": "Sheet1",
+          "col": "M",
+          "rows": [
+            3,
+            4,
+            5,
+            6,
+            8,
+            9,
+            10,
+            12
+          ],
+          "row_ranges": "3-6,8-10,12",
+          "row_count": 8,
+          "pattern_id": "pf_0000",
+          "normalized_pattern": "=IF([C-1,R]=0,0,EDATE([C-1,R],6))",
+          "sample_formula": "=IF(L3=0,0,EDATE(L3,6))"
+        }
+      ],
+      "new_eval_cells": 8,
+      "total_masked_cells": 32
+    },
+    {
+      "layer_index": 5,
+      "new_pattern_groups": [
+        {
+          "region_ids": [
+            "rg_00004"
+          ],
+          "sheet": "Sheet1",
+          "col": "L",
+          "rows": [
+            3,
+            4,
+            5,
+            6,
+            7,
+            8,
+            9,
+            10,
+            11,
+            12
+          ],
+          "row_ranges": "3-12",
+          "row_count": 10,
+          "pattern_id": "pf_0000",
+          "normalized_pattern": "=IF([C-1,R]=0,0,EDATE([C-1,R],6))",
+          "sample_formula": "=IF(K3=0,0,EDATE(K3,6))"
+        }
+      ],
+      "new_eval_cells": 10,
+      "total_masked_cells": 42
+    },
+    {
+      "layer_index": 6,
+      "new_pattern_groups": [
+        {
+          "region_ids": [
+            "rg_00003"
+          ],
+          "sheet": "Sheet1",
+          "col": "K",
+          "rows": [
+            3,
+            4,
+            5,
+            6,
+            7,
+            8,
+            9,
+            10,
+            11,
+            12
+          ],
+          "row_ranges": "3-12",
+          "row_count": 10,
+          "pattern_id": "pf_0000",
+          "normalized_pattern": "=IF([C-1,R]=0,0,EDATE([C-1,R],6))",
+          "sample_formula": "=IF(J3=0,0,EDATE(J3,6))"
+        }
+      ],
+      "new_eval_cells": 10,
+      "total_masked_cells": 52
+    },
+    {
+      "layer_index": 7,
+      "new_pattern_groups": [
+        {
+          "region_ids": [
+            "rg_00002"
+          ],
+          "sheet": "Sheet1",
+          "col": "J",
+          "rows": [
+            3,
+            4,
+            5,
+            6,
+            7,
+            8,
+            9,
+            10,
+            11,
+            12
+          ],
+          "row_ranges": "3-12",
+          "row_count": 10,
+          "pattern_id": "pf_0000",
+          "normalized_pattern": "=IF([C-1,R]=0,0,EDATE([C-1,R],6))",
+          "sample_formula": "=IF(I3=0,0,EDATE(I3,6))"
+        }
+      ],
+      "new_eval_cells": 10,
+      "total_masked_cells": 62
+    },
+    {
+      "layer_index": 8,
+      "new_pattern_groups": [
+        {
+          "region_ids": [
+            "rg_00001"
+          ],
+          "sheet": "Sheet1",
+          "col": "I",
+          "rows": [
+            3,
+            4,
+            5,
+            6,
+            7,
+            8,
+            9,
+            10,
+            11,
+            12
+          ],
+          "row_ranges": "3-12",
+          "row_count": 10,
+          "pattern_id": "pf_0000",
+          "normalized_pattern": "=IF([C-1,R]=0,0,EDATE([C-1,R],6))",
+          "sample_formula": "=IF(H3=0,0,EDATE(H3,6))"
+        }
+      ],
+      "new_eval_cells": 10,
+      "total_masked_cells": 72
+    },
+    {
+      "layer_index": 9,
+      "new_pattern_groups": [
+        {
+          "region_ids": [
+            "rg_00000"
+          ],
+          "sheet": "Sheet1",
+          "col": "H",
+          "rows": [
+            3,
+            4,
+            5,
+            6,
+            7,
+            8,
+            9,
+            10,
+            11,
+            12
+          ],
+          "row_ranges": "3-12",
+          "row_count": 10,
+          "pattern_id": "pf_0000",
+          "normalized_pattern": "=IF([C-1,R]=0,0,EDATE([C-1,R],6))",
+          "sample_formula": "=IF(G3=0,0,EDATE(G3,6))"
+        }
+      ],
+      "new_eval_cells": 10,
+      "total_masked_cells": 82
+    },
+    {
+      "layer_index": 10,
+      "new_pattern_groups": [
+        {
+          "region_ids": [
+            "rg_00021"
+          ],
+          "sheet": "Sheet1",
+          "col": "G",
+          "rows": [
+            4,
+            5,
+            6,
+            7,
+            8,
+            9,
+            10,
+            11,
+            12
+          ],
+          "row_ranges": "4-12",
+          "row_count": 9,
+          "pattern_id": "pf_0005",
+          "normalized_pattern": "=IF(OR([C+12,R]=\"3-YEARS\",[C+12,R]=\"5-YEARS\"),EDATE([C-1,R],6),0)",
+          "sample_formula": "=IF(OR(S4=\"3-Years\",S4=\"5-Years\"),EDATE(F4,6),0)"
+        },
+        {
+          "region_ids": [
+            "rg_00031"
+          ],
+          "sheet": "Sheet1",
+          "col": "G",
+          "rows": [
+            3
+          ],
+          "row_ranges": "3",
+          "row_count": 1,
+          "pattern_id": "pf_0011",
+          "normalized_pattern": "=IF(OR(AND([C+12,R]=\"3-YEARS\",[C+12,R]=\"5-YEARS\",[C+12,R]=\"3-YEARS\",[C+10,R]<=EDATE([C-1,R],36))),EDATE([C-1,R],6),0)",
+          "sample_formula": "=IF(OR(AND(S3=\"3-Years\",S3=\"5-Years\",S3=\"3-Years\",Q3<=EDATE(F3,36))),EDATE(F3,6),0)"
+        }
+      ],
+      "new_eval_cells": 10,
+      "total_masked_cells": 92
+    },
+    {
+      "layer_index": 11,
+      "new_pattern_groups": [
+        {
+          "region_ids": [
+            "rg_00024",
+            "rg_00025"
+          ],
+          "sheet": "Sheet1",
+          "col": "Q",
+          "rows": [
+            3,
+            6
+          ],
+          "row_ranges": "3,6",
+          "row_count": 2,
+          "pattern_id": "pf_0007",
+          "normalized_pattern": "=+EDATE([C-11,R],12)",
+          "sample_formula": "=+EDATE(F3,12)"
+        }
+      ],
+      "new_eval_cells": 2,
+      "total_masked_cells": 94
+    }
+  ],
+  "sink": {
+    "region_id": "rg_00014",
+    "sheet": "Sheet1",
+    "col": "P",
+    "pattern_id": "pf_0000",
+    "row_count": 4,
+    "family_size": 8
+  }
+}

FormulaCascade_Benchmark_eval_200/T1_FRONTIER/internal/FCB-00078/nl_task.json

@@ -0,0 +1,26 @@
+{
+  "task_id": "single_sheet__dag_27e9cb99b21e",
+  "prompt_en": "Sheet1 is a sales workbook for investment records, with rows organized by S.No., Customer Name, Investment Date, Currency, Investment Amount, and Issue Date. For the revenue forecast update, please complete the blank entries in the 10th Coupon column on Sheet1, specifically P3:P6, P8:P10, and P12. Some related coupon fields in the workbook need to be in place for the 10th Coupon entries to make sense, so keep the coupon columns consistent with the visible records. When you’re done, save the completed file as an .xlsx workbook.",
+  "prompt_cn": "Sheet1 是一份用于销售投资记录的工作表，行内容按 S.No.、Customer Name、Investment Date、Currency、Investment Amount 和 Issue Date 等字段整理。为了更新收入预测，请补全 Sheet1 中 10th Coupon 列的空白项，具体是 P3:P6、P8:P10 和 P12。工作簿里一些相关的 coupon 字段需要先保持完整，10th Coupon 的内容才会对应得上，所以请让这些 coupon 列与可见记录保持一致。完成后，请将文件保存为 .xlsx 工作簿。",
+  "quality_notes": "The prompt is minimal and business-oriented, references only visible workbook labels and the specified target column/ranges, mentions the dependency context naturally, and avoids formulas or operational hints.",
+  "post_check_issues": [],
+  "prompt_mode": "minimal",
+  "hint_leakage": {
+    "score": 7,
+    "level": "low",
+    "max_possible": 100,
+    "dimensions": {
+      "operation_words": 0,
+      "cell_range_density": 7,
+      "step_by_step": 0,
+      "column_operation_mapping": 0,
+      "formula_pattern_hints": 0
+    },
+    "operation_words_found": [],
+    "cell_ranges_found": 2
+  },
+  "version": "v7",
+  "model": "gpt-5.5",
+  "elapsed": 27.9,
+  "attempt": 1
+}

FormulaCascade_Benchmark_eval_200/T1_FRONTIER/internal/FCB-00078/release_qc.json

@@ -0,0 +1,58 @@
+{
+  "binary": true,
+  "binary_reason": "CORRECT: the mask is clean and the coupon-date chain is reconstructible from visible headers, tenor/maturity formulas, and coupon-date clues, though exact zero-vs-blank handling is mildly under-specified.",
+  "D1": {
+    "score": 5,
+    "reason": "All 94 contract cells are real in-sheet cells and are truly masked; there are no phantom references, no extra masked cells, and no contract cells left unmasked. No visible same-column formula exemplar makes the task trivially copyable."
+  },
+  "D2": {
+    "score": 5,
+    "reason": "The layer-1 GT formulas P3:P6, P8:P10, and P12 consistently use IF(O=0,0,EDATE(O,6)); their cached results match the source values, including zeros for non-eligible/non-continuing coupon chains and the expected 10th coupon dates for 5-year rows."
+  },
+  "D3": {
+    "score": 4,
+    "reason": "The NL prompt clearly names Sheet1, the 10th Coupon column, and the exact target ranges. It also indicates related coupon fields must be kept consistent. It is slightly underspecified about the prerequisite columns and exact formula conventions, but it is understandable."
+  },
+  "D4": {
+    "score": 4,
+    "reason": "Using only mask_last.xlsx and the prompt, the solver can see the main root evidence: coupon columns are sequentially labeled 1st through 10th, Issue Date and Tenor are visible, Maturity Date formulas reveal tenor-to-month mappings, and visible Coupon Date / coupon-status formulas show that 3-Year and 5-Year records use 6-month coupon intervals. Blank later coupon cells for 3-year rows also provide a boundary clue. The main minor gap is that the exact use of 0 as the sentinel for non-eligible coupon chains is not explicitly shown, so it requires reasonable inference rather than direct exemplar copying.",
+    "d4_type": "ok"
+  },
+  "D5": {
+    "score": 4,
+    "reason": "The source workbook is broadly coherent: headers are meaningful, formulas are mostly consistent, and there are no apparent circular references or corrupted ranges. There are some questionable ancillary/source formulas, such as an odd special-case G3 formula and coupon-status formulas below the table that appear logically dubious, but they do not break the audited target chain."
+  },
+  "D6": {
+    "score": 5,
+    "reason": "The NL sounds like a plausible workplace request for updating an investment/revenue forecast workbook and avoids benchmark jargon."
+  },
+  "total": 27,
+  "verdict": "RELEASE",
+  "verdict_reason": "High-quality hard chain-masking task: clean mask, correct final GT, and sufficient visible business/formula evidence to reconstruct the chain. Minor ambiguity around zero sentinels and some non-target source quirks are not publication blockers.",
+  "frontier_hardness": {
+    "score": 4,
+    "reason": "This is hard because it requires reconstructing a long single-sheet coupon-date dependency chain across many simultaneously masked cells, inferring tenor-dependent eligibility and maturity boundaries, and propagating 6-month coupon intervals through multiple columns without direct formula exemplars in the masked block.",
+    "fail_reason": "deep_chain",
+    "is_valid_hardness": true
+  },
+  "_prompt_chars": 104015,
+  "_timing_load_workbooks": 0.04,
+  "_timing_context": 0.01,
+  "_timing_api": 120.28,
+  "local_difficulty": {
+    "difficulty_score": 77.0,
+    "difficulty": "hard",
+    "depth": 11,
+    "total_masked": 94,
+    "is_cross_sheet": false,
+    "unique_patterns": 12,
+    "avg_complexity": 20,
+    "cross_refs": 0,
+    "visible_exemplar_ratio": 0.111
+  },
+  "task_id": "single_sheet__dag_27e9cb99b21e",
+  "elapsed": 120.3,
+  "publish_decision": "YES",
+  "release_tier": "FRONTIER_HARD",
+  "hard_block_reasons": []
+}

FormulaCascade_Benchmark_eval_200/T1_FRONTIER/internal/FCB-00078/target_contract.json

@@ -0,0 +1,296 @@
+{
+  "task_id": "single_sheet__dag_27e9cb99b21e",
+  "category": "single_sheet",
+  "depth": 11,
+  "final_target": {
+    "regions": [
+      {
+        "sheet": "Sheet1",
+        "column": "P",
+        "column_header": "10th Coupon",
+        "cell_range": "P3:P6, P8:P10, P12",
+        "cell_count": 8,
+        "rows": [
+          3,
+          4,
+          5,
+          6,
+          8,
+          9,
+          10,
+          12
+        ],
+        "first_row_label": "[Person_1]",
+        "last_row_label": "[Person_7]"
+      }
+    ],
+    "cell_count": 8,
+    "formula_families": [
+      "conditional"
+    ]
+  },
+  "prerequisite_steps": [
+    {
+      "layer": 11,
+      "regions": [
+        {
+          "sheet": "Sheet1",
+          "column": "Q",
+          "column_header": "Maturity Date",
+          "cell_range": "Q3, Q6",
+          "cell_count": 2,
+          "rows": [
+            3,
+            6
+          ],
+          "first_row_label": "[Person_1]",
+          "last_row_label": "[Person_3]"
+        }
+      ],
+      "cell_count": 2
+    },
+    {
+      "layer": 10,
+      "regions": [
+        {
+          "sheet": "Sheet1",
+          "column": "G",
+          "column_header": "1st Coupon",
+          "cell_range": "G3:G12",
+          "cell_count": 10,
+          "rows": [
+            3,
+            4,
+            5,
+            6,
+            7,
+            8,
+            9,
+            10,
+            11,
+            12
+          ],
+          "first_row_label": "[Person_1]",
+          "last_row_label": "[Person_7]"
+        }
+      ],
+      "cell_count": 10
+    },
+    {
+      "layer": 9,
+      "regions": [
+        {
+          "sheet": "Sheet1",
+          "column": "H",
+          "column_header": "2nd Coupon",
+          "cell_range": "H3:H12",
+          "cell_count": 10,
+          "rows": [
+            3,
+            4,
+            5,
+            6,
+            7,
+            8,
+            9,
+            10,
+            11,
+            12
+          ],
+          "first_row_label": "[Person_1]",
+          "last_row_label": "[Person_7]"
+        }
+      ],
+      "cell_count": 10
+    },
+    {
+      "layer": 8,
+      "regions": [
+        {
+          "sheet": "Sheet1",
+          "column": "I",
+          "column_header": "3rd Coupon",
+          "cell_range": "I3:I12",
+          "cell_count": 10,
+          "rows": [
+            3,
+            4,
+            5,
+            6,
+            7,
+            8,
+            9,
+            10,
+            11,
+            12
+          ],
+          "first_row_label": "[Person_1]",
+          "last_row_label": "[Person_7]"
+        }
+      ],
+      "cell_count": 10
+    },
+    {
+      "layer": 7,
+      "regions": [
+        {
+          "sheet": "Sheet1",
+          "column": "J",
+          "column_header": "4th Coupon",
+          "cell_range": "J3:J12",
+          "cell_count": 10,
+          "rows": [
+            3,
+            4,
+            5,
+            6,
+            7,
+            8,
+            9,
+            10,
+            11,
+            12
+          ],
+          "first_row_label": "[Person_1]",
+          "last_row_label": "[Person_7]"
+        }
+      ],
+      "cell_count": 10
+    },
+    {
+      "layer": 6,
+      "regions": [
+        {
+          "sheet": "Sheet1",
+          "column": "K",
+          "column_header": "5th Coupon",
+          "cell_range": "K3:K12",
+          "cell_count": 10,
+          "rows": [
+            3,
+            4,
+            5,
+            6,
+            7,
+            8,
+            9,
+            10,
+            11,
+            12
+          ],
+          "first_row_label": "[Person_1]",
+          "last_row_label": "[Person_7]"
+        }
+      ],
+      "cell_count": 10
+    },
+    {
+      "layer": 5,
+      "regions": [
+        {
+          "sheet": "Sheet1",
+          "column": "L",
+          "column_header": "6th Coupon",
+          "cell_range": "L3:L12",
+          "cell_count": 10,
+          "rows": [
+            3,
+            4,
+            5,
+            6,
+            7,
+            8,
+            9,
+            10,
+            11,
+            12
+          ],
+          "first_row_label": "[Person_1]",
+          "last_row_label": "[Person_7]"
+        }
+      ],
+      "cell_count": 10
+    },
+    {
+      "layer": 4,
+      "regions": [
+        {
+          "sheet": "Sheet1",
+          "column": "M",
+          "column_header": "7th Coupon",
+          "cell_range": "M3:M6, M8:M10, M12",
+          "cell_count": 8,
+          "rows": [
+            3,
+            4,
+            5,
+            6,
+            8,
+            9,
+            10,
+            12
+          ],
+          "first_row_label": "[Person_1]",
+          "last_row_label": "[Person_7]"
+        }
+      ],
+      "cell_count": 8
+    },
+    {
+      "layer": 3,
+      "regions": [
+        {
+          "sheet": "Sheet1",
+          "column": "N",
+          "column_header": "8th Coupon",
+          "cell_range": "N3:N6, N8:N10, N12",
+          "cell_count": 8,
+          "rows": [
+            3,
+            4,
+            5,
+            6,
+            8,
+            9,
+            10,
+            12
+          ],
+          "first_row_label": "[Person_1]",
+          "last_row_label": "[Person_7]"
+        }
+      ],
+      "cell_count": 8
+    },
+    {
+      "layer": 2,
+      "regions": [
+        {
+          "sheet": "Sheet1",
+          "column": "O",
+          "column_header": "9th Coupon",
+          "cell_range": "O3:O6, O8:O10, O12",
+          "cell_count": 8,
+          "rows": [
+            3,
+            4,
+            5,
+            6,
+            8,
+            9,
+            10,
+            12
+          ],
+          "first_row_label": "[Person_1]",
+          "last_row_label": "[Person_7]"
+        }
+      ],
+      "cell_count": 8
+    }
+  ],
+  "total_prerequisite_cells": 86,
+  "total_masked_cells": 94,
+  "ratio_total_vs_final": 11.8,
+  "sheets_involved": [
+    "Sheet1"
+  ]
+}

FormulaCascade_Benchmark_eval_200/T1_FRONTIER/internal/FCB-00078/task_meta.json

@@ -0,0 +1,37 @@
+{
+  "fcb_id": "FCB-00078",
+  "task_id": "single_sheet__dag_27e9cb99b21e",
+  "tier": "T1_FRONTIER",
+  "category": "single_sheet",
+  "depth": 11,
+  "total_masked": 94,
+  "is_cross_sheet": false,
+  "prompt_en": "Sheet1 is a sales workbook for investment records, with rows organized by S.No., Customer Name, Investment Date, Currency, Investment Amount, and Issue Date. For the revenue forecast update, please complete the blank entries in the 10th Coupon column on Sheet1, specifically P3:P6, P8:P10, and P12. Some related coupon fields in the workbook need to be in place for the 10th Coupon entries to make sense, so keep the coupon columns consistent with the visible records. When you’re done, save the completed file as an .xlsx workbook.",
+  "prompt_cn": "Sheet1 是一份用于销售投资记录的工作表，行内容按 S.No.、Customer Name、Investment Date、Currency、Investment Amount 和 Issue Date 等字段整理。为了更新收入预测，请补全 Sheet1 中 10th Coupon 列的空白项，具体是 P3:P6、P8:P10 和 P12。工作簿里一些相关的 coupon 字段需要先保持完整，10th Coupon 的内容才会对应得上，所以请让这些 coupon 列与可见记录保持一致。完成后，请将文件保存为 .xlsx 工作簿。",
+  "qc": {
+    "total": 27,
+    "verdict": "RELEASE",
+    "D1": 5,
+    "D2": 5,
+    "D3": 4,
+    "D4": 4,
+    "D5": 4,
+    "D6": 5,
+    "frontier_hardness": 4,
+    "local_difficulty": 77.0
+  },
+  "source_file_id": "848944d1699540584-i-want-to-pull-out-extract-data-through-excel-formula-excel-solution-request1",
+  "inferred_domain": "sales",
+  "domain_confidence": 0.25,
+  "sheet_profiles": [
+    {
+      "name": "Sheet1",
+      "used_range": "A1:X37",
+      "row_count": 37,
+      "col_count": 24,
+      "has_header": false,
+      "title_hint": "Sheet1",
+      "header_info": null
+    }
+  ]
+}

FormulaCascade_Benchmark_eval_200/T1_FRONTIER/internal/FCB-00080/audit.json

@@ -0,0 +1,441 @@
+{
+  "gate": {
+    "pre_nl_gate": {
+      "gate_label": "GATE_PASS",
+      "gate_pass": true,
+      "hard_fails": 0,
+      "warns": 0,
+      "checks": [
+        {
+          "check": "final_target_gate",
+          "pass": true,
+          "detail": "final_target has 131 cells"
+        },
+        {
+          "check": "header_grounding",
+          "pass": true,
+          "severity": "pass",
+          "detail": "1/1 final regions have column_header"
+        },
+        {
+          "check": "mask_consistency",
+          "pass": true,
+          "detail": "mask_last=18292B, src=26494B"
+        },
+        {
+          "check": "dirty_family",
+          "pass": true,
+          "detail": "0 dirty cells"
+        },
+        {
+          "check": "ratio_gate",
+          "pass": true,
+          "detail": "ratio=1.1 (total=141, final=131)"
+        },
+        {
+          "check": "dedup_gate",
+          "pass": true,
+          "detail": "0 duplicate cells across layers"
+        },
+        {
+          "check": "gt_uniqueness",
+          "pass": true,
+          "detail": "4 unique values across 131 cells [WARN: low_discrimination layer_1_ground_truth: 115/131=88%]"
+        },
+        {
+          "check": "tail_artifact",
+          "pass": true,
+          "detail": "0 bad values"
+        },
+        {
+          "check": "unrecoverable_leaf",
+          "pass": true,
+          "detail": "clean",
+          "hidden_const_cells": []
+        },
+        {
+          "check": "adjacent_column_leak",
+          "pass": true,
+          "detail": "leaked: Sheet1!P→Q(108/131), Sheet1!R→Q(115/131)"
+        },
+        {
+          "check": "header_name_accuracy",
+          "pass": true,
+          "detail": "clean"
+        },
+        {
+          "check": "duplicate_lookup_tie_break",
+          "pass": true,
+          "detail": "no lookup formulas"
+        },
+        {
+          "check": "src_chain_integrity",
+          "pass": true,
+          "severity": "ok",
+          "detail": "clean",
+          "sub_checks": {
+            "error_cells": {
+              "pass": true,
+              "count": 0,
+              "cells": []
+            },
+            "external_refs": {
+              "pass": true,
+              "count": 0,
+              "cells": []
+            },
+            "volatile_funcs": {
+              "pass": true,
+              "count": 0,
+              "cells": []
+            },
+            "missing_sheets": {
+              "pass": true,
+              "count": 0,
+              "sheets": []
+            },
+            "circular_refs": {
+              "pass": true,
+              "cycle_cells": []
+            }
+          }
+        },
+        {
+          "check": "uniqueness_deep",
+          "pass": true,
+          "severity": "ok",
+          "detail": "clean"
+        }
+      ]
+    },
+    "post_nl_validate": {
+      "validate_label": "CLEAN",
+      "validate_pass": true,
+      "hard_fails": 0,
+      "soft_warns": 0,
+      "checks": [
+        {
+          "check": "cell_range_match",
+          "pass": true,
+          "detail": "contract=11, prompt=1, missing=0",
+          "missing_ranges": [],
+          "severity": "OK"
+        },
+        {
+          "check": "cell_count_match",
+          "pass": true,
+          "detail": "no explicit total found; skipping (natural format)",
+          "severity": "OK"
+        },
+        {
+          "check": "step_count_match",
+          "pass": true,
+          "detail": "contract=10, no explicit steps found (v5 natural format)",
+          "severity": "OK"
+        },
+        {
+          "check": "sheet_name_match",
+          "pass": true,
+          "detail": "contract=['Sheet1'], missing=[]",
+          "severity": "OK"
+        },
+        {
+          "check": "no_formula_leak",
+          "pass": true,
+          "detail": "0 formula leaks",
+          "severity": "OK"
+        },
+        {
+          "check": "no_value_leak",
+          "pass": true,
+          "detail": "0 value leaks out of 131 GT cells",
+          "severity": "OK"
+        },
+        {
+          "check": "final_target_first",
+          "pass": true,
+          "detail": "no explicit final target marker (natural format)",
+          "severity": "OK"
+        },
+        {
+          "check": "output_format",
+          "pass": true,
+          "detail": "output format found",
+          "severity": "OK"
+        },
+        {
+          "check": "header_in_prompt",
+          "pass": true,
+          "detail": "no column headers found in prompt",
+          "severity": "OK"
+        },
+        {
+          "check": "hint_specificity",
+          "pass": true,
+          "detail": "clean",
+          "severity": "OK"
+        },
+        {
+          "check": "evidence_scope",
+          "pass": true,
+          "detail": "no cross-sheet refs in GT",
+          "severity": "OK"
+        },
+        {
+          "check": "exemplar_consistency",
+          "pass": true,
+          "severity": "OK",
+          "detail": "checked 10 col groups; CONFLICTS: Sheet1!P2: visible='=IF($F2<P$1,\"No\",IF(MONTH($F2)' vs GT pattern='=EOMONTH(O#,#)+#'; Sheet1!P3: visible='=IF($F3<P$1,\"No\",IF(MONTH($F3)' vs GT pattern='=EOMONTH(O#,#)+#'"
+        },
+        {
+          "check": "nl_gt_operation_consistency",
+          "pass": true,
+          "detail": "GT funcs: ['DAY', 'EOMONTH', 'IF', 'MONTH']",
+          "severity": "OK"
+        },
+        {
+          "check": "unmatched_default_rule",
+          "pass": true,
+          "detail": "no default-rule phrase found in NL",
+          "severity": "OK"
+        },
+        {
+          "check": "volatile_function_freeze",
+          "pass": true,
+          "detail": "volatile_cells=0",
+          "severity": "OK"
+        },
+        {
+          "check": "direct_answer_leakage",
+          "pass": true,
+          "detail": "0 leaks out of 141 GT cells (0%)",
+          "severity": "OK"
+        }
+      ]
+    },
+    "pre_nl_local": {
+      "local_total": 58,
+      "local_label": "PENDING_NL",
+      "hard_fail_flags": [],
+      "warnings": [
+        "release_verdict_not_keep",
+        "nl_missing"
+      ],
+      "local_subscores": {
+        "family_clean": 25,
+        "target_integrity": 15,
+        "taxonomy": 10,
+        "semantic_signal": 8,
+        "nl_schema": 0,
+        "target_alignment": 0,
+        "business_specificity": 0,
+        "nl_risk": 0
+      }
+    }
+  },
+  "verify": {
+    "uniqueness": {
+      "total_gt_cells": 141,
+      "total_non_none": 141,
+      "block_reasons": [],
+      "warnings": [
+        "mixed_gt_types:{'str': 125, 'int': 16}"
+      ],
+      "checks": {
+        "rank_tie_risk": {
+          "rank_cells": 0,
+          "tie_issues": 0,
+          "details": []
+        },
+        "trivial_gt": {
+          "issues": []
+        },
+        "gt_type_consistency": {
+          "types": {
+            "str": 125,
+            "int": 16
+          },
+          "mixed": true
+        },
+        "empty_gt": {
+          "count": 0,
+          "details": []
+        }
+      }
+    },
+    "src_chain": {
+      "hard_block": false,
+      "block_reasons": [],
+      "checks": {
+        "error_cells": {
+          "pass": true,
+          "count": 0,
+          "cells": []
+        },
+        "external_refs": {
+          "pass": true,
+          "count": 0,
+          "cells": []
+        },
+        "volatile_funcs": {
+          "pass": true,
+          "count": 0,
+          "cells": []
+        },
+        "missing_sheets": {
+          "pass": true,
+          "count": 0,
+          "sheets": []
+        },
+        "circular_refs": {
+          "pass": true,
+          "cycle_cells": []
+        }
+      },
+      "required_chain_scope": {
+        "external_ref_in_required_chain": 0,
+        "external_ref_in_other": 0,
+        "error_cells_in_required_chain": 0,
+        "error_cells_in_other": 0,
+        "required_chain_cells": 141
+      }
+    },
+    "solver_visibility": {
+      "contract_cells": 141,
+      "total_masked": 141,
+      "total_visible": 1973,
+      "depth": 11,
+      "block_reasons": [],
+      "warnings": [],
+      "checks": {
+        "broken_chains": {
+          "count": 0,
+          "checked": 141,
+          "details": []
+        },
+        "orphan_masks": {
+          "count": 0,
+          "details": []
+        },
+        "self_contained": {
+          "missing_sheets": []
+        }
+      }
+    },
+    "exemplar": {
+      "soft_block": false,
+      "block_reasons": [],
+      "checks": {
+        "pattern_coverage": {
+          "pass": true,
+          "total_gt_patterns": 2,
+          "total_src_patterns": 2,
+          "zero_exemplar_count": 0,
+          "low_exemplar_count": 1
+        },
+        "zero_exemplar_patterns": {
+          "pass": true,
+          "patterns": []
+        },
+        "low_exemplar_patterns": {
+          "pass": false,
+          "patterns": [
+            {
+              "pattern": "=EOMONTH(REF,0)+1",
+              "total_in_src": 11,
+              "sample_formula": "=EOMONTH(G1,0)+1"
+            }
+          ]
+        },
+        "func_coverage": {
+          "EOMONTH": {
+            "total_masked": 10,
+            "visible_exemplars": 1
+          },
+          "IF": {
+            "total_masked": 131,
+            "visible_exemplars": 1441
+          }
+        }
+      }
+    },
+    "shortcut": {
+      "shortcut_risk": 0.5,
+      "flags": [
+        {
+          "code": "SC1",
+          "description": "Constant fill: 82% of GT cells = 'No'",
+          "affected_cells": 115,
+          "severity": "medium"
+        }
+      ]
+    },
+    "release_audit": {
+      "surface_single_sheet": true,
+      "surface_sheets": [
+        "Sheet1"
+      ],
+      "cross_sheet_actual": false,
+      "cross_sheet_ref_count": 0,
+      "referenced_sheets": [],
+      "target_shape": "single_column_series",
+      "layer_sizes": [
+        131,
+        1,
+        1,
+        1,
+        1,
+        1,
+        1,
+        1,
+        1,
+        1,
+        1
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+      "mask_last_total_cells": 141,
+      "layer_growth_ratios": [
+        0.0076,
+        1.0,
+        1.0,
+        1.0,
+        1.0,
+        1.0,
+        1.0,
+        1.0,
+        1.0,
+        1.0
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+      "pattern_dominance_ratio": 0.9291,
+      "visible_clone_regions": 1,
+      "nearby_visible_clone_regions": 0,
+      "nearby_visible_clone_rows": 0,
+      "nearby_visible_clone_ratio": 0.0,
+      "promptability_score": 0.75,
+      "release_reasons": [
+        "pattern_dominance_extreme"
+      ],
+      "release_verdict": "REVISION_POOL"
+    }
+  },
+  "difficulty": {
+    "task_id": "single_sheet__dag_d36ceed2ff1f",
+    "difficulty_score": 79.3,
+    "difficulty": "hard",
+    "depth": 11,
+    "total_masked": 141,
+    "is_cross_sheet": false,
+    "unique_patterns": 11,
+    "avg_complexity": 13.0,
+    "cross_refs": 0,
+    "visible_exemplar_ratio": 0.0,
+    "score_breakdown": {
+      "depth": 25,
+      "cross_sheet": 0,
+      "cell_count": 14.3,
+      "patterns": 15,
+      "complexity": 15,
+      "cross_refs": 0,
+      "vis_penalty": 10.0
+    }
+  }
+}

FormulaCascade_Benchmark_eval_200/T1_FRONTIER/internal/FCB-00080/ground_truth_full.json

@@ -0,0 +1,1271 @@
+[
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+  },
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+  },
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+    "layer": 1
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+    "pattern_id": "pf_0000",
+    "layer": 1
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+          "rows": [
+            1
+          ],
+          "row_ranges": "1",
+          "row_count": 1,
+          "pattern_id": "pf_0001",
+          "normalized_pattern": "=EOMONTH([C-1,R],0)+1",
+          "sample_formula": "=EOMONTH(L1,0)+1"
+        }
+      ],
+      "new_eval_cells": 1,
+      "total_masked_cells": 136
+    },
+    {
+      "layer_index": 7,
+      "new_pattern_groups": [
+        {
+          "region_ids": [
+            "rg_00016"
+          ],
+          "sheet": "Sheet1",
+          "col": "L",
+          "rows": [
+            1
+          ],
+          "row_ranges": "1",
+          "row_count": 1,
+          "pattern_id": "pf_0001",
+          "normalized_pattern": "=EOMONTH([C-1,R],0)+1",
+          "sample_formula": "=EOMONTH(K1,0)+1"
+        }
+      ],
+      "new_eval_cells": 1,
+      "total_masked_cells": 137
+    },
+    {
+      "layer_index": 8,
+      "new_pattern_groups": [
+        {
+          "region_ids": [
+            "rg_00015"
+          ],
+          "sheet": "Sheet1",
+          "col": "K",
+          "rows": [
+            1
+          ],
+          "row_ranges": "1",
+          "row_count": 1,
+          "pattern_id": "pf_0001",
+          "normalized_pattern": "=EOMONTH([C-1,R],0)+1",
+          "sample_formula": "=EOMONTH(J1,0)+1"
+        }
+      ],
+      "new_eval_cells": 1,
+      "total_masked_cells": 138
+    },
+    {
+      "layer_index": 9,
+      "new_pattern_groups": [
+        {
+          "region_ids": [
+            "rg_00014"
+          ],
+          "sheet": "Sheet1",
+          "col": "J",
+          "rows": [
+            1
+          ],
+          "row_ranges": "1",
+          "row_count": 1,
+          "pattern_id": "pf_0001",
+          "normalized_pattern": "=EOMONTH([C-1,R],0)+1",
+          "sample_formula": "=EOMONTH(I1,0)+1"
+        }
+      ],
+      "new_eval_cells": 1,
+      "total_masked_cells": 139
+    },
+    {
+      "layer_index": 10,
+      "new_pattern_groups": [
+        {
+          "region_ids": [
+            "rg_00013"
+          ],
+          "sheet": "Sheet1",
+          "col": "I",
+          "rows": [
+            1
+          ],
+          "row_ranges": "1",
+          "row_count": 1,
+          "pattern_id": "pf_0001",
+          "normalized_pattern": "=EOMONTH([C-1,R],0)+1",
+          "sample_formula": "=EOMONTH(H1,0)+1"
+        }
+      ],
+      "new_eval_cells": 1,
+      "total_masked_cells": 140
+    },
+    {
+      "layer_index": 11,
+      "new_pattern_groups": [
+        {
+          "region_ids": [
+            "rg_00012"
+          ],
+          "sheet": "Sheet1",
+          "col": "H",
+          "rows": [
+            1
+          ],
+          "row_ranges": "1",
+          "row_count": 1,
+          "pattern_id": "pf_0001",
+          "normalized_pattern": "=EOMONTH([C-1,R],0)+1",
+          "sample_formula": "=EOMONTH(G1,0)+1"
+        }
+      ],
+      "new_eval_cells": 1,
+      "total_masked_cells": 141
+    }
+  ],
+  "sink": {
+    "region_id": "rg_00010",
+    "sheet": "Sheet1",
+    "col": "Q",
+    "pattern_id": "pf_0000",
+    "row_count": 131,
+    "family_size": 131
+  }
+}

FormulaCascade_Benchmark_eval_200/T1_FRONTIER/internal/FCB-00080/nl_task.json

@@ -0,0 +1,26 @@
+{
+  "task_id": "single_sheet__dag_d36ceed2ff1f",
+  "prompt_en": "Sheet1 is an HR employee roster used for payroll processing and headcount reconciliation, with fields like Employee ID, Employee Name, Employee Substatus Name, Contract No., Start Date, and End Date. The blank entries that need attention are in the No column on Sheet1, specifically Q2:Q132. Some of the employee record fields in the sheet relate to one another, so make sure the surrounding employee details are in place and consistent before finalizing the No column. Please save the completed workbook as an .xlsx file.",
+  "prompt_cn": "Sheet1 是一份用于薪资处理和员工人数核对的人力资源员工清单，里面有 Employee ID、Employee Name、Employee Substatus Name、Contract No.、Start Date 和 End Date 等字段。需要补全的是 Sheet1 中 No 列的空白内容，位置是 Q2:Q132。表中的部分员工记录字段彼此有关联，所以在最终填写 No 列之前，请确保周围的员工信息已经完整且一致。请将完成后的工作簿保存为 .xlsx 文件。",
+  "quality_notes": "The prompt is minimal and business-focused, references only visible sheet/column labels and the specified target range, avoids formulas and operation hints, and includes a natural prerequisite note plus the required save instruction.",
+  "post_check_issues": [],
+  "prompt_mode": "minimal",
+  "hint_leakage": {
+    "score": 3,
+    "level": "low",
+    "max_possible": 100,
+    "dimensions": {
+      "operation_words": 0,
+      "cell_range_density": 3,
+      "step_by_step": 0,
+      "column_operation_mapping": 0,
+      "formula_pattern_hints": 0
+    },
+    "operation_words_found": [],
+    "cell_ranges_found": 1
+  },
+  "version": "v7",
+  "model": "gpt-5.5",
+  "elapsed": 12.9,
+  "attempt": 1
+}

FormulaCascade_Benchmark_eval_200/T1_FRONTIER/internal/FCB-00080/release_qc.json

@@ -0,0 +1,58 @@
+{
+  "binary": true,
+  "binary_reason": "CORRECT: Masking is clean and the dependency chain is reconstructible from visible monthly structure plus adjacent formulas, though the NL is somewhat vague.",
+  "D1": {
+    "score": 5,
+    "reason": "All 141 contract cells are real cells within the sheet range, all are truly masked, and there is no extra masking outside the contract. Visible adjacent formulas in G/R provide useful structural evidence but do not make the whole chain zero-reasoning copyable because the missing monthly headers H1:Q1 still must be inferred."
+  },
+  "D2": {
+    "score": 5,
+    "reason": "The GT formulas are consistent across Q2:Q132, deterministic, and align with the cached outputs shown. Q-row formulas correctly depend on the employee End Date in column F and the monthly header Q1."
+  },
+  "D3": {
+    "score": 4,
+    "reason": "The prompt clearly identifies the final cells Q2:Q132 to complete and gives plausible HR/payroll context. It is somewhat vague about the masked prerequisite monthly headers and calls Q the 'No column,' which is not fully descriptive, but the cell coordinates remove most ambiguity."
+  },
+  "D4": {
+    "score": 4,
+    "reason": "Using only mask_last.xlsx and the NL prompt, the solver has strong root evidence: G1 is Jan 2020, R1 is Dec 2020, R2:R132 visibly contain the same end-date/month formula pattern needed for Q, and the visible H:P values reveal the intervening monthly structure. The main inference is reconstructing H1:Q1 as monthly headers, especially Q1 as 2020-11-01, before adapting the visible R formulas to Q. This is hard but solvable with one minor inferential gap.",
+    "d4_type": "ok"
+  },
+  "D5": {
+    "score": 5,
+    "reason": "The source spreadsheet appears structurally sound: one sheet, meaningful employee fields, monthly date columns, consistent formulas, no indicated broken references, circularity, corrupted values, or external dependencies."
+  },
+  "D6": {
+    "score": 4,
+    "reason": "The NL sounds like a realistic workplace instruction for an HR/payroll workbook and avoids benchmark jargon. It is a bit generic and slightly evasive about the exact formula logic, but still natural."
+  },
+  "total": 27,
+  "verdict": "RELEASE",
+  "verdict_reason": "High-quality task with clean masking, correct GT, and sufficient visible evidence. The NL could be more explicit about monthly headers, but this is not a blocking issue.",
+  "frontier_hardness": {
+    "score": 2,
+    "reason": "Although the formal chain depth is 11, the actual reconstruction is mostly a simple monthly-header sequence plus adapting a clearly visible adjacent R-column formula. A frontier model should likely succeed.",
+    "fail_reason": "easy",
+    "is_valid_hardness": false
+  },
+  "_prompt_chars": 206642,
+  "_timing_load_workbooks": 0.17,
+  "_timing_context": 0.01,
+  "_timing_api": 63.55,
+  "local_difficulty": {
+    "difficulty_score": 79.3,
+    "difficulty": "hard",
+    "depth": 11,
+    "total_masked": 141,
+    "is_cross_sheet": false,
+    "unique_patterns": 11,
+    "avg_complexity": 13,
+    "cross_refs": 0,
+    "visible_exemplar_ratio": 0.0
+  },
+  "task_id": "single_sheet__dag_d36ceed2ff1f",
+  "elapsed": 63.7,
+  "publish_decision": "YES",
+  "release_tier": "GOLD",
+  "hard_block_reasons": []
+}

FormulaCascade_Benchmark_eval_200/T1_FRONTIER/internal/FCB-00080/target_contract.json

@@ -0,0 +1,343 @@
+{
+  "task_id": "single_sheet__dag_d36ceed2ff1f",
+  "category": "single_sheet",
+  "depth": 11,
+  "final_target": {
+    "regions": [
+      {
+        "sheet": "Sheet1",
+        "column": "Q",
+        "column_header": "No",
+        "cell_range": "Q2:Q132",
+        "cell_count": 131,
+        "rows": [
+          2,
+          3,
+          4,
+          5,
+          6,
+          7,
+          8,
+          9,
+          10,
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+          12,
+          13,
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+          46,
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+          48,
+          49,
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+          51,
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+          53,
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+          55,
+          56,
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+          58,
+          59,
+          60,
+          61,
+          62,
+          63,
+          64,
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+          69,
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+          73,
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+          84,
+          85,
+          86,
+          87,
+          88,
+          89,
+          90,
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+          92,
+          93,
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+          95,
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+          100,
+          101,
+          102,
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+          105,
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+          110,
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+          113,
+          114,
+          115,
+          116,
+          117,
+          118,
+          119,
+          120,
+          121,
+          122,
+          123,
+          124,
+          125,
+          126,
+          127,
+          128,
+          129,
+          130,
+          131,
+          132
+        ],
+        "first_row_label": "E001",
+        "last_row_label": "E131"
+      }
+    ],
+    "cell_count": 131,
+    "formula_families": [
+      "conditional"
+    ]
+  },
+  "prerequisite_steps": [
+    {
+      "layer": 11,
+      "regions": [
+        {
+          "sheet": "Sheet1",
+          "column": "H",
+          "column_header": "No",
+          "cell_range": "H1",
+          "cell_count": 1,
+          "rows": [
+            1
+          ],
+          "first_row_label": "Employee ID",
+          "last_row_label": ""
+        }
+      ],
+      "cell_count": 1
+    },
+    {
+      "layer": 10,
+      "regions": [
+        {
+          "sheet": "Sheet1",
+          "column": "I",
+          "column_header": "No",
+          "cell_range": "I1",
+          "cell_count": 1,
+          "rows": [
+            1
+          ],
+          "first_row_label": "Employee ID",
+          "last_row_label": ""
+        }
+      ],
+      "cell_count": 1
+    },
+    {
+      "layer": 9,
+      "regions": [
+        {
+          "sheet": "Sheet1",
+          "column": "J",
+          "column_header": "No",
+          "cell_range": "J1",
+          "cell_count": 1,
+          "rows": [
+            1
+          ],
+          "first_row_label": "Employee ID",
+          "last_row_label": ""
+        }
+      ],
+      "cell_count": 1
+    },
+    {
+      "layer": 8,
+      "regions": [
+        {
+          "sheet": "Sheet1",
+          "column": "K",
+          "column_header": "No",
+          "cell_range": "K1",
+          "cell_count": 1,
+          "rows": [
+            1
+          ],
+          "first_row_label": "Employee ID",
+          "last_row_label": ""
+        }
+      ],
+      "cell_count": 1
+    },
+    {
+      "layer": 7,
+      "regions": [
+        {
+          "sheet": "Sheet1",
+          "column": "L",
+          "column_header": "No",
+          "cell_range": "L1",
+          "cell_count": 1,
+          "rows": [
+            1
+          ],
+          "first_row_label": "Employee ID",
+          "last_row_label": ""
+        }
+      ],
+      "cell_count": 1
+    },
+    {
+      "layer": 6,
+      "regions": [
+        {
+          "sheet": "Sheet1",
+          "column": "M",
+          "column_header": "No",
+          "cell_range": "M1",
+          "cell_count": 1,
+          "rows": [
+            1
+          ],
+          "first_row_label": "Employee ID",
+          "last_row_label": ""
+        }
+      ],
+      "cell_count": 1
+    },
+    {
+      "layer": 5,
+      "regions": [
+        {
+          "sheet": "Sheet1",
+          "column": "N",
+          "column_header": "No",
+          "cell_range": "N1",
+          "cell_count": 1,
+          "rows": [
+            1
+          ],
+          "first_row_label": "Employee ID",
+          "last_row_label": ""
+        }
+      ],
+      "cell_count": 1
+    },
+    {
+      "layer": 4,
+      "regions": [
+        {
+          "sheet": "Sheet1",
+          "column": "O",
+          "column_header": "No",
+          "cell_range": "O1",
+          "cell_count": 1,
+          "rows": [
+            1
+          ],
+          "first_row_label": "Employee ID",
+          "last_row_label": ""
+        }
+      ],
+      "cell_count": 1
+    },
+    {
+      "layer": 3,
+      "regions": [
+        {
+          "sheet": "Sheet1",
+          "column": "P",
+          "column_header": "No",
+          "cell_range": "P1",
+          "cell_count": 1,
+          "rows": [
+            1
+          ],
+          "first_row_label": "Employee ID",
+          "last_row_label": ""
+        }
+      ],
+      "cell_count": 1
+    },
+    {
+      "layer": 2,
+      "regions": [
+        {
+          "sheet": "Sheet1",
+          "column": "Q",
+          "column_header": "No",
+          "cell_range": "Q1",
+          "cell_count": 1,
+          "rows": [
+            1
+          ],
+          "first_row_label": "Employee ID",
+          "last_row_label": ""
+        }
+      ],
+      "cell_count": 1
+    }
+  ],
+  "total_prerequisite_cells": 10,
+  "total_masked_cells": 141,
+  "ratio_total_vs_final": 1.1,
+  "sheets_involved": [
+    "Sheet1"
+  ]
+}

FormulaCascade_Benchmark_eval_200/T1_FRONTIER/internal/FCB-00080/task_meta.json

@@ -0,0 +1,37 @@
+{
+  "fcb_id": "FCB-00080",
+  "task_id": "single_sheet__dag_d36ceed2ff1f",
+  "tier": "T1_FRONTIER",
+  "category": "single_sheet",
+  "depth": 11,
+  "total_masked": 141,
+  "is_cross_sheet": false,
+  "prompt_en": "Sheet1 is an HR employee roster used for payroll processing and headcount reconciliation, with fields like Employee ID, Employee Name, Employee Substatus Name, Contract No., Start Date, and End Date. The blank entries that need attention are in the No column on Sheet1, specifically Q2:Q132. Some of the employee record fields in the sheet relate to one another, so make sure the surrounding employee details are in place and consistent before finalizing the No column. Please save the completed workbook as an .xlsx file.",
+  "prompt_cn": "Sheet1 是一份用于薪资处理和员工人数核对的人力资源员工清单，里面有 Employee ID、Employee Name、Employee Substatus Name、Contract No.、Start Date 和 End Date 等字段。需要补全的是 Sheet1 中 No 列的空白内容，位置是 Q2:Q132。表中的部分员工记录字段彼此有关联，所以在最终填写 No 列之前，请确保周围的员工信息已经完整且一致。请将完成后的工作簿保存为 .xlsx 文件。",
+  "qc": {
+    "total": 27,
+    "verdict": "RELEASE",
+    "D1": 5,
+    "D2": 5,
+    "D3": 4,
+    "D4": 4,
+    "D5": 5,
+    "D6": 4,
+    "frontier_hardness": 2,
+    "local_difficulty": 79.3
+  },
+  "source_file_id": "708590d1607941663-count-of-days-per-month-for-a-contract-period-test",
+  "inferred_domain": "hr",
+  "domain_confidence": 0.25,
+  "sheet_profiles": [
+    {
+      "name": "Sheet1",
+      "used_range": "A1:R132",
+      "row_count": 132,
+      "col_count": 18,
+      "has_header": false,
+      "title_hint": "Sheet1",
+      "header_info": null
+    }
+  ]
+}

FormulaCascade_Benchmark_eval_200/T1_FRONTIER/internal/FCB-00083/audit.json

@@ -0,0 +1,470 @@
+{
+  "gate": {
+    "pre_nl_gate": {
+      "gate_label": "GATE_PASS",
+      "gate_pass": true,
+      "hard_fails": 0,
+      "warns": 0,
+      "checks": [
+        {
+          "check": "final_target_gate",
+          "pass": true,
+          "detail": "final_target has 13 cells"
+        },
+        {
+          "check": "header_grounding",
+          "pass": true,
+          "severity": "pass",
+          "detail": "1/1 final regions have column_header"
+        },
+        {
+          "check": "mask_consistency",
+          "pass": true,
+          "detail": "mask_last=185021B, src=286538B"
+        },
+        {
+          "check": "dirty_family",
+          "pass": true,
+          "detail": "0 dirty cells"
+        },
+        {
+          "check": "ratio_gate",
+          "pass": true,
+          "detail": "ratio=1.8 (total=23, final=13)"
+        },
+        {
+          "check": "dedup_gate",
+          "pass": true,
+          "detail": "0 duplicate cells across layers"
+        },
+        {
+          "check": "gt_uniqueness",
+          "pass": true,
+          "detail": "6 unique values across 15 cells"
+        },
+        {
+          "check": "tail_artifact",
+          "pass": true,
+          "detail": "0 bad values"
+        },
+        {
+          "check": "unrecoverable_leaf",
+          "pass": true,
+          "detail": "clean",
+          "hidden_const_cells": []
+        },
+        {
+          "check": "adjacent_column_leak",
+          "pass": true,
+          "detail": "leaked: CASHFLOW!G→H(8/13), CASHFLOW!I→H(8/13)"
+        },
+        {
+          "check": "header_name_accuracy",
+          "pass": true,
+          "detail": "clean"
+        },
+        {
+          "check": "duplicate_lookup_tie_break",
+          "pass": true,
+          "detail": "no lookup formulas"
+        },
+        {
+          "check": "src_chain_integrity",
+          "pass": true,
+          "severity": "ok",
+          "detail": "clean",
+          "sub_checks": {
+            "error_cells": {
+              "pass": true,
+              "count": 0,
+              "cells": []
+            },
+            "external_refs": {
+              "pass": true,
+              "count": 0,
+              "cells": []
+            },
+            "volatile_funcs": {
+              "pass": true,
+              "count": 0,
+              "cells": []
+            },
+            "missing_sheets": {
+              "pass": true,
+              "count": 0,
+              "sheets": []
+            },
+            "circular_refs": {
+              "pass": true,
+              "cycle_cells": []
+            }
+          }
+        },
+        {
+          "check": "uniqueness_deep",
+          "pass": true,
+          "severity": "ok",
+          "detail": "clean"
+        }
+      ]
+    },
+    "post_nl_validate": {
+      "validate_label": "SOFT_WARN",
+      "validate_pass": true,
+      "hard_fails": 0,
+      "soft_warns": 1,
+      "checks": [
+        {
+          "check": "cell_range_match",
+          "pass": false,
+          "detail": "contract=12, prompt=2, missing=8",
+          "missing_ranges": [
+            "D129",
+            "D142",
+            "E129",
+            "E142",
+            "F129",
+            "F142",
+            "G129",
+            "G142"
+          ],
+          "severity": "SOFT_WARN"
+        },
+        {
+          "check": "cell_count_match",
+          "pass": true,
+          "detail": "no explicit total found; skipping (natural format)",
+          "severity": "OK"
+        },
+        {
+          "check": "step_count_match",
+          "pass": true,
+          "detail": "contract=9, no explicit steps found (v5 natural format)",
+          "severity": "OK"
+        },
+        {
+          "check": "sheet_name_match",
+          "pass": true,
+          "detail": "contract=['BACKUP', 'CASHFLOW'], missing=[]",
+          "severity": "OK"
+        },
+        {
+          "check": "no_formula_leak",
+          "pass": true,
+          "detail": "0 formula leaks",
+          "severity": "OK"
+        },
+        {
+          "check": "no_value_leak",
+          "pass": true,
+          "detail": "0 value leaks out of 13 GT cells",
+          "severity": "OK"
+        },
+        {
+          "check": "final_target_first",
+          "pass": true,
+          "detail": "no explicit final target marker (natural format)",
+          "severity": "OK"
+        },
+        {
+          "check": "output_format",
+          "pass": true,
+          "detail": "output format found",
+          "severity": "OK"
+        },
+        {
+          "check": "header_in_prompt",
+          "pass": true,
+          "detail": "no column headers found in prompt",
+          "severity": "OK"
+        },
+        {
+          "check": "hint_specificity",
+          "pass": true,
+          "detail": "clean",
+          "severity": "OK"
+        },
+        {
+          "check": "evidence_scope",
+          "pass": true,
+          "detail": "referenced=1 mentioned=1 missing=0",
+          "severity": "OK"
+        },
+        {
+          "check": "exemplar_consistency",
+          "pass": true,
+          "severity": "OK",
+          "detail": "checked 6 col groups; CONFLICTS: CASHFLOW!H9: visible='=BACKUP!H468+BACKUP!H469+BACKU' vs GT pattern='=BACKUP!H#'; CASHFLOW!H11: visible='=H276+H275+H279' vs GT pattern='=BACKUP!H#'"
+        },
+        {
+          "check": "nl_gt_operation_consistency",
+          "pass": true,
+          "detail": "GT funcs: ['SUM']",
+          "severity": "OK"
+        },
+        {
+          "check": "unmatched_default_rule",
+          "pass": true,
+          "detail": "no default-rule phrase found in NL",
+          "severity": "OK"
+        },
+        {
+          "check": "volatile_function_freeze",
+          "pass": true,
+          "detail": "volatile_cells=0",
+          "severity": "OK"
+        },
+        {
+          "check": "direct_answer_leakage",
+          "pass": true,
+          "detail": "0 leaks out of 23 GT cells (0%)",
+          "severity": "OK"
+        }
+      ]
+    },
+    "pre_nl_local": {
+      "local_total": 58,
+      "local_label": "PENDING_NL",
+      "hard_fail_flags": [],
+      "warnings": [
+        "release_verdict_not_keep",
+        "nl_missing"
+      ],
+      "local_subscores": {
+        "family_clean": 25,
+        "target_integrity": 15,
+        "taxonomy": 10,
+        "semantic_signal": 8,
+        "nl_schema": 0,
+        "target_alignment": 0,
+        "business_specificity": 0,
+        "nl_risk": 0
+      }
+    }
+  },
+  "verify": {
+    "uniqueness": {
+      "total_gt_cells": 23,
+      "total_non_none": 23,
+      "block_reasons": [],
+      "warnings": [],
+      "checks": {
+        "rank_tie_risk": {
+          "rank_cells": 0,
+          "tie_issues": 0,
+          "details": []
+        },
+        "trivial_gt": {
+          "issues": []
+        },
+        "gt_type_consistency": {
+          "types": {
+            "int": 23
+          },
+          "mixed": false
+        },
+        "empty_gt": {
+          "count": 0,
+          "details": []
+        }
+      }
+    },
+    "src_chain": {
+      "hard_block": false,
+      "block_reasons": [],
+      "checks": {
+        "error_cells": {
+          "pass": true,
+          "count": 0,
+          "cells": []
+        },
+        "external_refs": {
+          "pass": true,
+          "count": 0,
+          "cells": []
+        },
+        "volatile_funcs": {
+          "pass": true,
+          "count": 0,
+          "cells": []
+        },
+        "missing_sheets": {
+          "pass": true,
+          "count": 0,
+          "sheets": []
+        },
+        "circular_refs": {
+          "pass": true,
+          "cycle_cells": []
+        }
+      },
+      "required_chain_scope": {
+        "external_ref_in_required_chain": 0,
+        "external_ref_in_other": 0,
+        "error_cells_in_required_chain": 0,
+        "error_cells_in_other": 0,
+        "required_chain_cells": 23
+      }
+    },
+    "solver_visibility": {
+      "contract_cells": 23,
+      "total_masked": 23,
+      "total_visible": 4695,
+      "depth": 10,
+      "block_reasons": [],
+      "warnings": [
+        "broken_chains:5/23"
+      ],
+      "checks": {
+        "broken_chains": {
+          "count": 5,
+          "checked": 23,
+          "details": [
+            {
+              "cell": "BACKUP!H142",
+              "missing_dep": "BACKUP!H141",
+              "formula": "=SUM(H129:H141)"
+            },
+            {
+              "cell": "BACKUP!E142",
+              "missing_dep": "BACKUP!E141",
+              "formula": "=SUM(E129:E141)"
+            },
+            {
+              "cell": "BACKUP!G142",
+              "missing_dep": "BACKUP!G141",
+              "formula": "=SUM(G129:G141)"
+            },
+            {
+              "cell": "BACKUP!D142",
+              "missing_dep": "BACKUP!D141",
+              "formula": "=SUM(D129:D141)"
+            },
+            {
+              "cell": "BACKUP!F142",
+              "missing_dep": "BACKUP!F141",
+              "formula": "=SUM(F129:F141)"
+            }
+          ]
+        },
+        "orphan_masks": {
+          "count": 0,
+          "details": []
+        },
+        "self_contained": {
+          "missing_sheets": []
+        }
+      }
+    },
+    "exemplar": {
+      "soft_block": false,
+      "block_reasons": [],
+      "checks": {
+        "pattern_coverage": {
+          "pass": true,
+          "total_gt_patterns": 2,
+          "total_src_patterns": 145,
+          "zero_exemplar_count": 0,
+          "low_exemplar_count": 0
+        },
+        "zero_exemplar_patterns": {
+          "pass": true,
+          "patterns": []
+        },
+        "low_exemplar_patterns": {
+          "pass": true,
+          "patterns": []
+        },
+        "func_coverage": {
+          "SUM": {
+            "total_masked": 5,
+            "visible_exemplars": 2398
+          },
+          "reference": {
+            "total_masked": 18,
+            "visible_exemplars": 4801
+          }
+        }
+      }
+    },
+    "shortcut": {
+      "shortcut_risk": 0.5,
+      "flags": [
+        {
+          "code": "SC3",
+          "description": "Copy-from-visible: 7/23 GT cells have nearby visible formula clones",
+          "affected_cells": 7,
+          "severity": "medium"
+        }
+      ]
+    },
+    "release_audit": {
+      "surface_single_sheet": false,
+      "surface_sheets": [
+        "BACKUP",
+        "CASHFLOW"
+      ],
+      "cross_sheet_actual": true,
+      "cross_sheet_ref_count": 13,
+      "referenced_sheets": [
+        "BACKUP"
+      ],
+      "target_shape": "summary_block",
+      "layer_sizes": [
+        13,
+        2,
+        1,
+        1,
+        1,
+        1,
+        1,
+        1,
+        1,
+        1
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+      "mask_last_total_cells": 23,
+      "layer_growth_ratios": [
+        0.1538,
+        0.5,
+        1.0,
+        1.0,
+        1.0,
+        1.0,
+        1.0,
+        1.0,
+        1.0
+      ],
+      "pattern_dominance_ratio": 0.5652,
+      "visible_clone_regions": 7,
+      "nearby_visible_clone_regions": 4,
+      "nearby_visible_clone_rows": 4,
+      "nearby_visible_clone_ratio": 4.0,
+      "promptability_score": 0.6,
+      "release_reasons": [
+        "parallel_block_leakage"
+      ],
+      "release_verdict": "REBUILD_REQUIRED"
+    }
+  },
+  "difficulty": {
+    "task_id": "cross_sheet__dag_dcaff3fdb1a1",
+    "difficulty_score": 75.6,
+    "difficulty": "hard",
+    "depth": 10,
+    "total_masked": 23,
+    "is_cross_sheet": true,
+    "unique_patterns": 11,
+    "avg_complexity": 4.0,
+    "cross_refs": 13,
+    "visible_exemplar_ratio": 0.94,
+    "score_breakdown": {
+      "depth": 25,
+      "cross_sheet": 10,
+      "cell_count": 9.0,
+      "patterns": 15,
+      "complexity": 6.0,
+      "cross_refs": 10,
+      "vis_penalty": 0.6
+    }
+  }
+}

FormulaCascade_Benchmark_eval_200/T1_FRONTIER/internal/FCB-00083/ground_truth_full.json

@@ -0,0 +1,209 @@
+[
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+    "cached_value": 0,
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+  }
+]

FormulaCascade_Benchmark_eval_200/T1_FRONTIER/internal/FCB-00083/ground_truth_target.json

@@ -0,0 +1,106 @@
+[
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+  },
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+    "formula": "=BACKUP!H130",
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+  },
+  {
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+    "row": 265,
+    "formula": "=BACKUP!H135",
+    "cached_value": 0,
+    "pattern_id": "pf_0011"
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+    "formula": "=BACKUP!H142",
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+]

FormulaCascade_Benchmark_eval_200/T1_FRONTIER/internal/FCB-00083/layers.json

@@ -0,0 +1,271 @@
+{
+  "dag_id": "dag_dcaff3fdb1a1",
+  "file_id": "tracy_geaccone__40394__TW3rdCECF",
+  "category": "cross_sheet",
+  "surface_category": "cross_sheet",
+  "effective_category": "cross_sheet",
+  "depth": 10,
+  "quality": {
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+    "chain_external_cells": 0,
+    "is_clean": true
+  },
+  "layers": [
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+      "layer_index": 1,
+      "new_pattern_groups": [
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+            "rg_01659",
+            "rg_01660"
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+          "pattern_id": "pf_0011",
+          "normalized_pattern": "=BACKUP![C,R-130]",
+          "sample_formula": "=BACKUP!H129"
+        }
+      ],
+      "new_eval_cells": 13,
+      "total_masked_cells": 13
+    },
+    {
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+      "new_pattern_groups": [
+        {
+          "region_ids": [
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+          "sheet": "BACKUP",
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+          "row_ranges": "142",
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+          "pattern_id": "pf_0049",
+          "normalized_pattern": "=SUM([C,R-13]:[C,R-1])",
+          "sample_formula": "=SUM(H129:H141)"
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+        {
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+      "new_eval_cells": 2,
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+      "new_pattern_groups": [
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+          "region_ids": [
+            "rg_03403"
+          ],
+          "sheet": "BACKUP",
+          "col": "E",
+          "rows": [
+            142
+          ],
+          "row_ranges": "142",
+          "row_count": 1,
+          "pattern_id": "pf_0049",
+          "normalized_pattern": "=SUM([C,R-13]:[C,R-1])",
+          "sample_formula": "=SUM(E129:E141)"
+        }
+      ],
+      "new_eval_cells": 1,
+      "total_masked_cells": 20
+    },
+    {
+      "layer_index": 8,
+      "new_pattern_groups": [
+        {
+          "region_ids": [
+            "rg_06274"
+          ],
+          "sheet": "BACKUP",
+          "col": "E",
+          "rows": [
+            129
+          ],
+          "row_ranges": "129",
+          "row_count": 1,
+          "pattern_id": "pf_0194",
+          "normalized_pattern": "=[C-1,R+13]",
+          "sample_formula": "=D142"
+        }
+      ],
+      "new_eval_cells": 1,
+      "total_masked_cells": 21
+    },
+    {
+      "layer_index": 9,
+      "new_pattern_groups": [
+        {
+          "region_ids": [
+            "rg_03402"
+          ],
+          "sheet": "BACKUP",
+          "col": "D",
+          "rows": [
+            142
+          ],
+          "row_ranges": "142",
+          "row_count": 1,
+          "pattern_id": "pf_0049",
+          "normalized_pattern": "=SUM([C,R-13]:[C,R-1])",
+          "sample_formula": "=SUM(D129:D141)"
+        }
+      ],
+      "new_eval_cells": 1,
+      "total_masked_cells": 22
+    },
+    {
+      "layer_index": 10,
+      "new_pattern_groups": [
+        {
+          "region_ids": [
+            "rg_06273"
+          ],
+          "sheet": "BACKUP",
+          "col": "D",
+          "rows": [
+            129
+          ],
+          "row_ranges": "129",
+          "row_count": 1,
+          "pattern_id": "pf_0194",
+          "normalized_pattern": "=[C-1,R+13]",
+          "sample_formula": "=C142"
+        }
+      ],
+      "new_eval_cells": 1,
+      "total_masked_cells": 23
+    }
+  ],
+  "sink": {
+    "region_id": "rg_01660",
+    "sheet": "CASHFLOW",
+    "col": "H",
+    "pattern_id": "pf_0011",
+    "row_count": 1,
+    "family_size": 13
+  }
+}

FormulaCascade_Benchmark_eval_200/T1_FRONTIER/internal/FCB-00083/nl_task.json

@@ -0,0 +1,26 @@
+{
+  "task_id": "cross_sheet__dag_dcaff3fdb1a1",
+  "prompt_en": "The TRANSWESTERN PIPELINE GROUP workbook is a 2001 ACTUAL / ESTIMATE backup file for the balance sheet and cash flow statement, with monthly columns such as JAN, FEB, MAR, APR, and MAY. For the fiscal year close-out review, please complete the blank MAY entries on the CASHFLOW sheet in column H for the cash flow statement line items at H259:H270 and H272. Some related monthly figures in the workbook may need to be in place before this MAY section is meaningful, so keep the entries consistent with the surrounding balance sheet and cash flow statement data. Save the completed workbook as an .xlsx file.",
+  "prompt_cn": "这个 TRANSWESTERN PIPELINE GROUP 工作簿是 2001 ACTUAL / ESTIMATE 的资产负债表和现金流量表备份文件，里面有 JAN、FEB、MAR、APR、MAY 等月度列。为了进行财政年度收尾复核，请补全 CASHFLOW 工作表中 MAY 列（H 列）的空白现金流量表项目，位置是 H259:H270 和 H272。工作簿中一些相关的月度数据可能需要先补齐，这样这个 MAY 部分才有意义；请让这些填写内容与周围的资产负债表和现金流量表数据保持一致。请将完成后的工作簿保存为 .xlsx 文件。",
+  "quality_notes": "The prompt identifies the finance workbook, relevant sheet, MAY column, and exact target ranges while avoiding formulas, operations, and answer values.",
+  "post_check_issues": [],
+  "prompt_mode": "minimal",
+  "hint_leakage": {
+    "score": 4,
+    "level": "low",
+    "max_possible": 100,
+    "dimensions": {
+      "operation_words": 0,
+      "cell_range_density": 4,
+      "step_by_step": 0,
+      "column_operation_mapping": 0,
+      "formula_pattern_hints": 0
+    },
+    "operation_words_found": [],
+    "cell_ranges_found": 1
+  },
+  "version": "v7",
+  "model": "gpt-5.5",
+  "elapsed": 91.2,
+  "attempt": 3
+}

FormulaCascade_Benchmark_eval_200/T1_FRONTIER/internal/FCB-00083/release_qc.json

@@ -0,0 +1,58 @@
+{
+  "binary": true,
+  "binary_reason": "CORRECT: clean chain-masked cross-sheet task with real cells, correct GT, and enough visible structure to reconstruct the dependency chain.",
+  "D1": {
+    "score": 5,
+    "reason": "All 23 contract cells are real in-sheet cells and all are truly masked. The diff summary shows no extra masked cells and no contract misses. Although there are many visible same-pattern exemplars in adjacent columns and rows, the task is not trivially copyable because the solver must also reconstruct the masked BACKUP balance-chain cells before the CASHFLOW MAY values are meaningful."
+  },
+  "D2": {
+    "score": 5,
+    "reason": "The layer-1 GT formulas match the visible source structure: CASHFLOW H259:H270 and H272 link directly to BACKUP H129:H140 and H142. Cached values are consistent with the BACKUP chain, e.g. H129 = G142 = 990597 and H142 = SUM(H129:H141) = 1006548. Formulas are deterministic and unambiguous."
+  },
+  "D3": {
+    "score": 5,
+    "reason": "The NL description clearly identifies the workbook context, the sheet, the target column/month, and the exact cells H259:H270 and H272 to complete. It also appropriately hints that related monthly figures may need to be completed consistently."
+  },
+  "D4": {
+    "score": 5,
+    "reason": "Using only mask_last.xlsx and the NL, the task is reconstructible. The CASHFLOW target rows visibly follow a cross-sheet pattern from BACKUP in adjacent columns. BACKUP rows 129 and 142 have clear visible structural clues: row 129 is the prior month ending balance, row 142 is the sum over rows 129:141, and row 144 shows the monthly change relationship. Constants in rows 130:140 are visible for the MAY column, and the masked chain can be solved sequentially across D:H. No hidden root constant or missing rule is required.",
+    "d4_type": "ok"
+  },
+  "D5": {
+    "score": 4,
+    "reason": "The relevant source data for this task appears internally consistent, with no phantom ranges, no circularity, and coherent monthly balance/cash-flow structure. There are some general workbook-quality quirks visible, such as external Source references and at least one odd-looking total formula elsewhere in the displayed CASHFLOW area, but these do not affect the masked target chain."
+  },
+  "D6": {
+    "score": 5,
+    "reason": "The NL prompt reads like a plausible finance close-out request, uses natural workplace language, and avoids benchmark-specific jargon."
+  },
+  "total": 29,
+  "verdict": "RELEASE",
+  "verdict_reason": "High-quality task: GT is correct, masking is clean, the NL is clear, and the deep cross-sheet chain is solvable from visible evidence without hidden constants.",
+  "frontier_hardness": {
+    "score": 4,
+    "reason": "This is hard because it requires reconstructing a long masked dependency chain across BACKUP and CASHFLOW, with sequential month-to-month beginning/end balance logic and multiple target rows. However, the rules are visible and repetitive, so it is genuine reasoning difficulty rather than missing evidence.",
+    "fail_reason": "deep_chain",
+    "is_valid_hardness": true
+  },
+  "_prompt_chars": 71338,
+  "_timing_load_workbooks": 1.72,
+  "_timing_context": 0.07,
+  "_timing_api": 158.76,
+  "local_difficulty": {
+    "difficulty_score": 75.6,
+    "difficulty": "hard",
+    "depth": 10,
+    "total_masked": 23,
+    "is_cross_sheet": true,
+    "unique_patterns": 11,
+    "avg_complexity": 4,
+    "cross_refs": 13,
+    "visible_exemplar_ratio": 0.94
+  },
+  "task_id": "cross_sheet__dag_dcaff3fdb1a1",
+  "elapsed": 160.6,
+  "publish_decision": "YES",
+  "release_tier": "FRONTIER_HARD",
+  "hard_block_reasons": []
+}

FormulaCascade_Benchmark_eval_200/T1_FRONTIER/internal/FCB-00083/target_contract.json

@@ -0,0 +1,207 @@
+{
+  "task_id": "cross_sheet__dag_dcaff3fdb1a1",
+  "category": "cross_sheet",
+  "depth": 10,
+  "final_target": {
+    "regions": [
+      {
+        "sheet": "CASHFLOW",
+        "column": "H",
+        "column_header": "MAY",
+        "cell_range": "H259:H270, H272",
+        "cell_count": 13,
+        "rows": [
+          259,
+          260,
+          261,
+          262,
+          263,
+          264,
+          265,
+          266,
+          267,
+          268,
+          269,
+          270,
+          272
+        ],
+        "first_row_label": "Plant - Beg. Balance",
+        "last_row_label": "Plant - End. Balance"
+      }
+    ],
+    "cell_count": 13,
+    "formula_families": []
+  },
+  "prerequisite_steps": [
+    {
+      "layer": 10,
+      "regions": [
+        {
+          "sheet": "BACKUP",
+          "column": "D",
+          "column_header": "Investments & Other Assets - End. Balance",
+          "cell_range": "D129",
+          "cell_count": 1,
+          "rows": [
+            129
+          ],
+          "first_row_label": "Plant - Beg. Balance",
+          "last_row_label": ""
+        }
+      ],
+      "cell_count": 1
+    },
+    {
+      "layer": 9,
+      "regions": [
+        {
+          "sheet": "BACKUP",
+          "column": "D",
+          "column_header": "Investments & Other Assets - End. Balance",
+          "cell_range": "D142",
+          "cell_count": 1,
+          "rows": [
+            142
+          ],
+          "first_row_label": "Plant - End. Balance",
+          "last_row_label": ""
+        }
+      ],
+      "cell_count": 1
+    },
+    {
+      "layer": 8,
+      "regions": [
+        {
+          "sheet": "BACKUP",
+          "column": "E",
+          "column_header": "Investments & Other Assets - End. Balance",
+          "cell_range": "E129",
+          "cell_count": 1,
+          "rows": [
+            129
+          ],
+          "first_row_label": "Plant - Beg. Balance",
+          "last_row_label": ""
+        }
+      ],
+      "cell_count": 1
+    },
+    {
+      "layer": 7,
+      "regions": [
+        {
+          "sheet": "BACKUP",
+          "column": "E",
+          "column_header": "Investments & Other Assets - End. Balance",
+          "cell_range": "E142",
+          "cell_count": 1,
+          "rows": [
+            142
+          ],
+          "first_row_label": "Plant - End. Balance",
+          "last_row_label": ""
+        }
+      ],
+      "cell_count": 1
+    },
+    {
+      "layer": 6,
+      "regions": [
+        {
+          "sheet": "BACKUP",
+          "column": "F",
+          "column_header": "Investments & Other Assets - End. Balance",
+          "cell_range": "F129",
+          "cell_count": 1,
+          "rows": [
+            129
+          ],
+          "first_row_label": "Plant - Beg. Balance",
+          "last_row_label": ""
+        }
+      ],
+      "cell_count": 1
+    },
+    {
+      "layer": 5,
+      "regions": [
+        {
+          "sheet": "BACKUP",
+          "column": "F",
+          "column_header": "Investments & Other Assets - End. Balance",
+          "cell_range": "F142",
+          "cell_count": 1,
+          "rows": [
+            142
+          ],
+          "first_row_label": "Plant - End. Balance",
+          "last_row_label": ""
+        }
+      ],
+      "cell_count": 1
+    },
+    {
+      "layer": 4,
+      "regions": [
+        {
+          "sheet": "BACKUP",
+          "column": "G",
+          "column_header": "Investments & Other Assets - End. Balance",
+          "cell_range": "G129",
+          "cell_count": 1,
+          "rows": [
+            129
+          ],
+          "first_row_label": "Plant - Beg. Balance",
+          "last_row_label": ""
+        }
+      ],
+      "cell_count": 1
+    },
+    {
+      "layer": 3,
+      "regions": [
+        {
+          "sheet": "BACKUP",
+          "column": "G",
+          "column_header": "Investments & Other Assets - End. Balance",
+          "cell_range": "G142",
+          "cell_count": 1,
+          "rows": [
+            142
+          ],
+          "first_row_label": "Plant - End. Balance",
+          "last_row_label": ""
+        }
+      ],
+      "cell_count": 1
+    },
+    {
+      "layer": 2,
+      "regions": [
+        {
+          "sheet": "BACKUP",
+          "column": "H",
+          "column_header": "Investments & Other Assets - End. Balance",
+          "cell_range": "H129, H142",
+          "cell_count": 2,
+          "rows": [
+            129,
+            142
+          ],
+          "first_row_label": "Plant - Beg. Balance",
+          "last_row_label": "Plant - End. Balance"
+        }
+      ],
+      "cell_count": 2
+    }
+  ],
+  "total_prerequisite_cells": 10,
+  "total_masked_cells": 23,
+  "ratio_total_vs_final": 1.8,
+  "sheets_involved": [
+    "BACKUP",
+    "CASHFLOW"
+  ]
+}

FormulaCascade_Benchmark_eval_200/T1_FRONTIER/internal/FCB-00083/task_meta.json

@@ -0,0 +1,55 @@
+{
+  "fcb_id": "FCB-00083",
+  "task_id": "cross_sheet__dag_dcaff3fdb1a1",
+  "tier": "T1_FRONTIER",
+  "category": "cross_sheet",
+  "depth": 10,
+  "total_masked": 23,
+  "is_cross_sheet": true,
+  "prompt_en": "The TRANSWESTERN PIPELINE GROUP workbook is a 2001 ACTUAL / ESTIMATE backup file for the balance sheet and cash flow statement, with monthly columns such as JAN, FEB, MAR, APR, and MAY. For the fiscal year close-out review, please complete the blank MAY entries on the CASHFLOW sheet in column H for the cash flow statement line items at H259:H270 and H272. Some related monthly figures in the workbook may need to be in place before this MAY section is meaningful, so keep the entries consistent with the surrounding balance sheet and cash flow statement data. Save the completed workbook as an .xlsx file.",
+  "prompt_cn": "这个 TRANSWESTERN PIPELINE GROUP 工作簿是 2001 ACTUAL / ESTIMATE 的资产负债表和现金流量表备份文件，里面有 JAN、FEB、MAR、APR、MAY 等月度列。为了进行财政年度收尾复核，请补全 CASHFLOW 工作表中 MAY 列（H 列）的空白现金流量表项目，位置是 H259:H270 和 H272。工作簿中一些相关的月度数据可能需要先补齐，这样这个 MAY 部分才有意义；请让这些填写内容与周围的资产负债表和现金流量表数据保持一致。请将完成后的工作簿保存为 .xlsx 文件。",
+  "qc": {
+    "total": 29,
+    "verdict": "RELEASE",
+    "D1": 5,
+    "D2": 5,
+    "D3": 5,
+    "D4": 5,
+    "D5": 4,
+    "D6": 5,
+    "frontier_hardness": 4,
+    "local_difficulty": 75.6
+  },
+  "source_file_id": "tracy_geaccone__40394__TW3rdCECF",
+  "inferred_domain": "finance",
+  "domain_confidence": 0.5,
+  "sheet_profiles": [
+    {
+      "name": "BACKUP",
+      "used_range": "A1:W530",
+      "row_count": 530,
+      "col_count": 23,
+      "has_header": false,
+      "title_hint": "BACKUP",
+      "header_info": null
+    },
+    {
+      "name": "BALSHEET",
+      "used_range": "A1:BO236",
+      "row_count": 236,
+      "col_count": 67,
+      "has_header": false,
+      "title_hint": "BALSHEET",
+      "header_info": null
+    },
+    {
+      "name": "CASHFLOW",
+      "used_range": "A1:AU492",
+      "row_count": 492,
+      "col_count": 47,
+      "has_header": false,
+      "title_hint": "CASHFLOW",
+      "header_info": null
+    }
+  ]
+}

FormulaCascade_Benchmark_eval_200/T1_FRONTIER/internal/FCB-00084/audit.json

@@ -0,0 +1,442 @@
+{
+  "gate": {
+    "pre_nl_gate": {
+      "gate_label": "GATE_PASS",
+      "gate_pass": true,
+      "hard_fails": 0,
+      "warns": 0,
+      "checks": [
+        {
+          "check": "final_target_gate",
+          "pass": true,
+          "detail": "final_target has 6 cells"
+        },
+        {
+          "check": "header_grounding",
+          "pass": true,
+          "severity": "pass",
+          "detail": "1/1 final regions have column_header"
+        },
+        {
+          "check": "mask_consistency",
+          "pass": true,
+          "detail": "mask_last=7950B, src=11841B"
+        },
+        {
+          "check": "dirty_family",
+          "pass": true,
+          "detail": "0 dirty cells"
+        },
+        {
+          "check": "ratio_gate",
+          "pass": true,
+          "detail": "ratio=2.7 (total=16, final=6)"
+        },
+        {
+          "check": "dedup_gate",
+          "pass": true,
+          "detail": "0 duplicate cells across layers"
+        },
+        {
+          "check": "gt_uniqueness",
+          "pass": true,
+          "detail": "4 unique values across 8 cells"
+        },
+        {
+          "check": "tail_artifact",
+          "pass": true,
+          "detail": "0 bad values"
+        },
+        {
+          "check": "unrecoverable_leaf",
+          "pass": true,
+          "detail": "clean",
+          "hidden_const_cells": []
+        },
+        {
+          "check": "adjacent_column_leak",
+          "pass": true,
+          "detail": "clean"
+        },
+        {
+          "check": "header_name_accuracy",
+          "pass": true,
+          "detail": "clean"
+        },
+        {
+          "check": "duplicate_lookup_tie_break",
+          "pass": true,
+          "detail": "no lookup formulas"
+        },
+        {
+          "check": "src_chain_integrity",
+          "pass": true,
+          "severity": "ok",
+          "detail": "clean",
+          "sub_checks": {
+            "error_cells": {
+              "pass": true,
+              "count": 0,
+              "cells": []
+            },
+            "external_refs": {
+              "pass": true,
+              "count": 0,
+              "cells": []
+            },
+            "volatile_funcs": {
+              "pass": true,
+              "count": 0,
+              "cells": []
+            },
+            "missing_sheets": {
+              "pass": true,
+              "count": 0,
+              "sheets": []
+            },
+            "circular_refs": {
+              "pass": true,
+              "cycle_cells": []
+            }
+          }
+        },
+        {
+          "check": "uniqueness_deep",
+          "pass": true,
+          "severity": "ok",
+          "detail": "clean"
+        }
+      ]
+    },
+    "post_nl_validate": {
+      "validate_label": "SOFT_WARN",
+      "validate_pass": true,
+      "hard_fails": 0,
+      "soft_warns": 1,
+      "checks": [
+        {
+          "check": "cell_range_match",
+          "pass": false,
+          "detail": "contract=11, prompt=2, missing=9",
+          "missing_ranges": [
+            "H1",
+            "I1",
+            "J1",
+            "K1",
+            "L1",
+            "M1",
+            "N1",
+            "O1",
+            "Q1"
+          ],
+          "severity": "SOFT_WARN"
+        },
+        {
+          "check": "cell_count_match",
+          "pass": true,
+          "detail": "no explicit total found; skipping (natural format)",
+          "severity": "OK"
+        },
+        {
+          "check": "step_count_match",
+          "pass": true,
+          "detail": "contract=9, no explicit steps found (v5 natural format)",
+          "severity": "OK"
+        },
+        {
+          "check": "sheet_name_match",
+          "pass": true,
+          "detail": "contract=['Sheet1'], missing=[]",
+          "severity": "OK"
+        },
+        {
+          "check": "no_formula_leak",
+          "pass": true,
+          "detail": "0 formula leaks",
+          "severity": "OK"
+        },
+        {
+          "check": "no_value_leak",
+          "pass": true,
+          "detail": "0 value leaks out of 6 GT cells",
+          "severity": "OK"
+        },
+        {
+          "check": "final_target_first",
+          "pass": true,
+          "detail": "no explicit final target marker (natural format)",
+          "severity": "OK"
+        },
+        {
+          "check": "output_format",
+          "pass": true,
+          "detail": "output format found",
+          "severity": "OK"
+        },
+        {
+          "check": "header_in_prompt",
+          "pass": true,
+          "detail": "no column headers found in prompt",
+          "severity": "OK"
+        },
+        {
+          "check": "hint_specificity",
+          "pass": true,
+          "detail": "clean",
+          "severity": "OK"
+        },
+        {
+          "check": "evidence_scope",
+          "pass": true,
+          "detail": "no cross-sheet refs in GT",
+          "severity": "OK"
+        },
+        {
+          "check": "exemplar_consistency",
+          "pass": true,
+          "severity": "OK",
+          "detail": "checked 10 col groups; CONFLICTS: Sheet1!P10: visible='=_xlfn.CEILING.MATH(P$1-$C$3,$' vs GT pattern='=O#+$G$#'; Sheet1!Q3: visible='=N(AND(Q$1<=_xlfn.CEILING.MATH' vs GT pattern='=P#+$G$#'"
+        },
+        {
+          "check": "nl_gt_operation_consistency",
+          "pass": true,
+          "detail": "GT funcs: ['AND', 'XLFN.CEILING.MATH']",
+          "severity": "OK"
+        },
+        {
+          "check": "unmatched_default_rule",
+          "pass": true,
+          "detail": "no default-rule phrase found in NL",
+          "severity": "OK"
+        },
+        {
+          "check": "volatile_function_freeze",
+          "pass": true,
+          "detail": "volatile_cells=0",
+          "severity": "OK"
+        },
+        {
+          "check": "direct_answer_leakage",
+          "pass": true,
+          "detail": "0 leaks out of 16 GT cells (0%)",
+          "severity": "OK"
+        }
+      ]
+    },
+    "pre_nl_local": {
+      "local_total": 58,
+      "local_label": "PENDING_NL",
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+      "release_reasons": [],
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+}

FormulaCascade_Benchmark_eval_200/T1_FRONTIER/internal/FCB-00084/ground_truth_full.json

@@ -0,0 +1,146 @@
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FormulaCascade_Benchmark_eval_200/T1_FRONTIER/internal/FCB-00084/ground_truth_target.json

@@ -0,0 +1,50 @@
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FormulaCascade_Benchmark_eval_200/T1_FRONTIER/internal/FCB-00084/layers.json

@@ -0,0 +1,263 @@
+{
+  "dag_id": "dag_2a9911685b77",
+  "file_id": "837407d1690141513-auto-populate-values-for-a-month-based-on-a-previous-months-value-book1-example-1-",
+  "category": "single_sheet",
+  "surface_category": "single_sheet",
+  "effective_category": "single_sheet",
+  "depth": 10,
+  "quality": {
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+      "new_eval_cells": 6,
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+          "sample_formula": "=P1+$G$1"
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+    "family_size": 6
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+}

FormulaCascade_Benchmark_eval_200/T1_FRONTIER/internal/FCB-00084/nl_task.json

@@ -0,0 +1,26 @@
+{
+  "task_id": "single_sheet__dag_2a9911685b77",
+  "prompt_en": "Sheet1 is an operations maintenance-hours tracker for ADT040, with visible fields such as CURRENT HOURS, HOURS PER MONTH, Plant No, PM Task & Desc, and Last Service ODO. The May-23 column needs to be completed for the first six task rows, specifically P3:P8. Some of the monthly entries in this workbook feed naturally into later blank columns, so make sure the relevant month-by-month information is in place before finishing the May-23 values. Please save the completed workbook as an .xlsx file.",
+  "prompt_cn": "Sheet1 是一张用于 ADT040 的运营维护工时跟踪表，表中可以看到 CURRENT HOURS、HOURS PER MONTH、Plant No、PM Task & Desc 和 Last Service ODO 等字段。请补全 May-23 列中前六个任务行的内容，也就是 P3:P8。这个工作簿里有些月份数据会自然关联到后面的空白列，所以在填写 May-23 的值之前，请确保相关的逐月信息已经补齐。请将完成后的工作簿保存为 .xlsx 文件。",
+  "quality_notes": "The prompt is minimal and scenario-based, references only visible workbook labels and Sheet1, identifies the target range P3:P8, mentions the natural prerequisite context without explaining any operation, and avoids formulas or exact masked values.",
+  "post_check_issues": [],
+  "prompt_mode": "minimal",
+  "hint_leakage": {
+    "score": 4,
+    "level": "low",
+    "max_possible": 100,
+    "dimensions": {
+      "operation_words": 0,
+      "cell_range_density": 4,
+      "step_by_step": 0,
+      "column_operation_mapping": 0,
+      "formula_pattern_hints": 0
+    },
+    "operation_words_found": [],
+    "cell_ranges_found": 1
+  },
+  "version": "v7",
+  "model": "gpt-5.5",
+  "elapsed": 9.6,
+  "attempt": 1
+}

FormulaCascade_Benchmark_eval_200/T1_FRONTIER/internal/FCB-00084/release_qc.json

@@ -0,0 +1,58 @@
+{
+  "binary": true,
+  "binary_reason": "CORRECT — the mask is clean, all cells are real, GT is consistent, and the chain is reconstructible from visible workbook structure plus the prompt.",
+  "D1": {
+    "score": 5,
+    "reason": "All 16 contract cells are truly masked, with no contract misses and no extra masking. The masked cells are within the actual sheet range. Visible same-pattern formulas exist, but they do not make the task entirely zero-reasoning because the solver must also reconstruct the masked month-hour header chain H1:Q1, including the seed from CURRENT HOURS and monthly increments."
+  },
+  "D2": {
+    "score": 5,
+    "reason": "The GT formulas for P3:P8 match the surrounding row/column formula pattern in src.xlsx and are deterministic. Cached results are consistent with the formulas: rows 3-6 evaluate to 1 and rows 7-8 evaluate to 0 given the visible last service ODO, interval, P1, and Q1 values."
+  },
+  "D3": {
+    "score": 4,
+    "reason": "The NL description clearly identifies the final target range P3:P8 and the May-23 column. It also hints that month-by-month information must be completed first. It does not explicitly enumerate the prerequisite header cells H1:Q1, so it is slightly indirect, but still understandable."
+  },
+  "D4": {
+    "score": 5,
+    "reason": "Using only mask_last.xlsx and the prompt, the task is solvable. The target formula pattern is visible in adjacent/monthly columns H:O and Q:W. The header chain pattern is visible from R1 onward as prior month plus $G$1, with G1 labeled HOURS PER MONTH and C1 labeled CURRENT HOURS; H1 can reasonably be inferred as the starting current-hours value and I1:Q1 as monthly increments. The prompt reinforces that monthly entries feed later blank columns.",
+    "d4_type": "ok"
+  },
+  "D5": {
+    "score": 5,
+    "reason": "The source spreadsheet appears internally consistent: formulas follow regular monthly and task-row patterns, cached values align, headers are meaningful for an operations maintenance-hours tracker, and no circular references or corrupted values are evident from the provided context."
+  },
+  "D6": {
+    "score": 5,
+    "reason": "The NL request sounds like a natural workplace instruction: it describes the tracker, names the relevant column and rows, and asks the solver to save the completed workbook without benchmark jargon."
+  },
+  "total": 29,
+  "verdict": "RELEASE",
+  "verdict_reason": "High-quality task: clean masking, correct GT, sufficient visible evidence for the dependency chain, and a natural prompt. The only minor weakness is that the prompt does not explicitly list prerequisite cells, but this is acceptable for chain-masking.",
+  "frontier_hardness": {
+    "score": 2,
+    "reason": "Despite depth 10, the dependency chain is a simple linear monthly increment pattern with strong visible exemplars, and the P-row formulas are directly visible in neighboring columns. A frontier model should likely reconstruct the chain successfully.",
+    "fail_reason": "easy",
+    "is_valid_hardness": false
+  },
+  "_prompt_chars": 150618,
+  "_timing_load_workbooks": 0.03,
+  "_timing_context": 0.0,
+  "_timing_api": 148.66,
+  "local_difficulty": {
+    "difficulty_score": 70.5,
+    "difficulty": "hard",
+    "depth": 10,
+    "total_masked": 16,
+    "is_cross_sheet": false,
+    "unique_patterns": 11,
+    "avg_complexity": 20,
+    "cross_refs": 0,
+    "visible_exemplar_ratio": 0.25
+  },
+  "task_id": "single_sheet__dag_2a9911685b77",
+  "elapsed": 148.7,
+  "publish_decision": "YES",
+  "release_tier": "GOLD",
+  "hard_block_reasons": []
+}

FormulaCascade_Benchmark_eval_200/T1_FRONTIER/internal/FCB-00084/target_contract.json

@@ -0,0 +1,212 @@
+{
+  "task_id": "single_sheet__dag_2a9911685b77",
+  "category": "single_sheet",
+  "depth": 10,
+  "final_target": {
+    "regions": [
+      {
+        "sheet": "Sheet1",
+        "column": "P",
+        "column_header": "May-23",
+        "cell_range": "P3:P8",
+        "cell_count": 6,
+        "rows": [
+          3,
+          4,
+          5,
+          6,
+          7,
+          8
+        ],
+        "first_row_label": "ADT040",
+        "last_row_label": "ADT040"
+      }
+    ],
+    "cell_count": 6,
+    "formula_families": [
+      "arithmetic"
+    ]
+  },
+  "prerequisite_steps": [
+    {
+      "layer": 10,
+      "regions": [
+        {
+          "sheet": "Sheet1",
+          "column": "H",
+          "column_header": "Sep-22",
+          "cell_range": "H1",
+          "cell_count": 1,
+          "rows": [
+            1
+          ],
+          "first_row_label": "ADT040",
+          "last_row_label": ""
+        }
+      ],
+      "cell_count": 1
+    },
+    {
+      "layer": 9,
+      "regions": [
+        {
+          "sheet": "Sheet1",
+          "column": "I",
+          "column_header": "Oct-22",
+          "cell_range": "I1",
+          "cell_count": 1,
+          "rows": [
+            1
+          ],
+          "first_row_label": "ADT040",
+          "last_row_label": ""
+        }
+      ],
+      "cell_count": 1
+    },
+    {
+      "layer": 8,
+      "regions": [
+        {
+          "sheet": "Sheet1",
+          "column": "J",
+          "column_header": "Nov-22",
+          "cell_range": "J1",
+          "cell_count": 1,
+          "rows": [
+            1
+          ],
+          "first_row_label": "ADT040",
+          "last_row_label": ""
+        }
+      ],
+      "cell_count": 1
+    },
+    {
+      "layer": 7,
+      "regions": [
+        {
+          "sheet": "Sheet1",
+          "column": "K",
+          "column_header": "Dec-22",
+          "cell_range": "K1",
+          "cell_count": 1,
+          "rows": [
+            1
+          ],
+          "first_row_label": "ADT040",
+          "last_row_label": ""
+        }
+      ],
+      "cell_count": 1
+    },
+    {
+      "layer": 6,
+      "regions": [
+        {
+          "sheet": "Sheet1",
+          "column": "L",
+          "column_header": "Jan-23",
+          "cell_range": "L1",
+          "cell_count": 1,
+          "rows": [
+            1
+          ],
+          "first_row_label": "ADT040",
+          "last_row_label": ""
+        }
+      ],
+      "cell_count": 1
+    },
+    {
+      "layer": 5,
+      "regions": [
+        {
+          "sheet": "Sheet1",
+          "column": "M",
+          "column_header": "Feb-23",
+          "cell_range": "M1",
+          "cell_count": 1,
+          "rows": [
+            1
+          ],
+          "first_row_label": "ADT040",
+          "last_row_label": ""
+        }
+      ],
+      "cell_count": 1
+    },
+    {
+      "layer": 4,
+      "regions": [
+        {
+          "sheet": "Sheet1",
+          "column": "N",
+          "column_header": "Mar-23",
+          "cell_range": "N1",
+          "cell_count": 1,
+          "rows": [
+            1
+          ],
+          "first_row_label": "ADT040",
+          "last_row_label": ""
+        }
+      ],
+      "cell_count": 1
+    },
+    {
+      "layer": 3,
+      "regions": [
+        {
+          "sheet": "Sheet1",
+          "column": "O",
+          "column_header": "Apr-23",
+          "cell_range": "O1",
+          "cell_count": 1,
+          "rows": [
+            1
+          ],
+          "first_row_label": "ADT040",
+          "last_row_label": ""
+        }
+      ],
+      "cell_count": 1
+    },
+    {
+      "layer": 2,
+      "regions": [
+        {
+          "sheet": "Sheet1",
+          "column": "P",
+          "column_header": "May-23",
+          "cell_range": "P1",
+          "cell_count": 1,
+          "rows": [
+            1
+          ],
+          "first_row_label": "ADT040",
+          "last_row_label": ""
+        },
+        {
+          "sheet": "Sheet1",
+          "column": "Q",
+          "column_header": "Jun-23",
+          "cell_range": "Q1",
+          "cell_count": 1,
+          "rows": [
+            1
+          ],
+          "first_row_label": "ADT040",
+          "last_row_label": ""
+        }
+      ],
+      "cell_count": 2
+    }
+  ],
+  "total_prerequisite_cells": 10,
+  "total_masked_cells": 16,
+  "ratio_total_vs_final": 2.7,
+  "sheets_involved": [
+    "Sheet1"
+  ]
+}

FormulaCascade_Benchmark_eval_200/T1_FRONTIER/internal/FCB-00084/task_meta.json

@@ -0,0 +1,37 @@
+{
+  "fcb_id": "FCB-00084",
+  "task_id": "single_sheet__dag_2a9911685b77",
+  "tier": "T1_FRONTIER",
+  "category": "single_sheet",
+  "depth": 10,
+  "total_masked": 16,
+  "is_cross_sheet": false,
+  "prompt_en": "Sheet1 is an operations maintenance-hours tracker for ADT040, with visible fields such as CURRENT HOURS, HOURS PER MONTH, Plant No, PM Task & Desc, and Last Service ODO. The May-23 column needs to be completed for the first six task rows, specifically P3:P8. Some of the monthly entries in this workbook feed naturally into later blank columns, so make sure the relevant month-by-month information is in place before finishing the May-23 values. Please save the completed workbook as an .xlsx file.",
+  "prompt_cn": "Sheet1 是一张用于 ADT040 的运营维护工时跟踪表，表中可以看到 CURRENT HOURS、HOURS PER MONTH、Plant No、PM Task & Desc 和 Last Service ODO 等字段。请补全 May-23 列中前六个任务行的内容，也就是 P3:P8。这个工作簿里有些月份数据会自然关联到后面的空白列，所以在填写 May-23 的值之前，请确保相关的逐月信息已经补齐。请将完成后的工作簿保存为 .xlsx 文件。",
+  "qc": {
+    "total": 29,
+    "verdict": "RELEASE",
+    "D1": 5,
+    "D2": 5,
+    "D3": 4,
+    "D4": 5,
+    "D5": 5,
+    "D6": 5,
+    "frontier_hardness": 2,
+    "local_difficulty": 70.5
+  },
+  "source_file_id": "837407d1690141513-auto-populate-values-for-a-month-based-on-a-previous-months-value-book1-example-1-",
+  "inferred_domain": "operations",
+  "domain_confidence": 0.25,
+  "sheet_profiles": [
+    {
+      "name": "Sheet1",
+      "used_range": "A1:W10",
+      "row_count": 10,
+      "col_count": 23,
+      "has_header": false,
+      "title_hint": "Sheet1",
+      "header_info": null
+    }
+  ]
+}

FormulaCascade_Benchmark_eval_200/T1_FRONTIER/internal/FCB-00089/audit.json

@@ -0,0 +1,470 @@
+{
+  "gate": {
+    "pre_nl_gate": {
+      "gate_label": "GATE_PASS",
+      "gate_pass": true,
+      "hard_fails": 0,
+      "warns": 0,
+      "checks": [
+        {
+          "check": "final_target_gate",
+          "pass": true,
+          "detail": "final_target has 13 cells"
+        },
+        {
+          "check": "header_grounding",
+          "pass": true,
+          "severity": "pass",
+          "detail": "1/1 final regions have column_header"
+        },
+        {
+          "check": "mask_consistency",
+          "pass": true,
+          "detail": "mask_last=165396B, src=256816B"
+        },
+        {
+          "check": "dirty_family",
+          "pass": true,
+          "detail": "0 dirty cells"
+        },
+        {
+          "check": "ratio_gate",
+          "pass": true,
+          "detail": "ratio=1.8 (total=23, final=13)"
+        },
+        {
+          "check": "dedup_gate",
+          "pass": true,
+          "detail": "0 duplicate cells across layers"
+        },
+        {
+          "check": "gt_uniqueness",
+          "pass": true,
+          "detail": "5 unique values across 15 cells"
+        },
+        {
+          "check": "tail_artifact",
+          "pass": true,
+          "detail": "0 bad values"
+        },
+        {
+          "check": "unrecoverable_leaf",
+          "pass": true,
+          "detail": "clean",
+          "hidden_const_cells": []
+        },
+        {
+          "check": "adjacent_column_leak",
+          "pass": true,
+          "detail": "leaked: CASHFLOW!G→H(9/13), CASHFLOW!I→H(9/13)"
+        },
+        {
+          "check": "header_name_accuracy",
+          "pass": true,
+          "detail": "clean"
+        },
+        {
+          "check": "duplicate_lookup_tie_break",
+          "pass": true,
+          "detail": "no lookup formulas"
+        },
+        {
+          "check": "src_chain_integrity",
+          "pass": true,
+          "severity": "ok",
+          "detail": "clean",
+          "sub_checks": {
+            "error_cells": {
+              "pass": true,
+              "count": 0,
+              "cells": []
+            },
+            "external_refs": {
+              "pass": true,
+              "count": 0,
+              "cells": []
+            },
+            "volatile_funcs": {
+              "pass": true,
+              "count": 0,
+              "cells": []
+            },
+            "missing_sheets": {
+              "pass": true,
+              "count": 0,
+              "sheets": []
+            },
+            "circular_refs": {
+              "pass": true,
+              "cycle_cells": []
+            }
+          }
+        },
+        {
+          "check": "uniqueness_deep",
+          "pass": true,
+          "severity": "ok",
+          "detail": "clean"
+        }
+      ]
+    },
+    "post_nl_validate": {
+      "validate_label": "SOFT_WARN",
+      "validate_pass": true,
+      "hard_fails": 0,
+      "soft_warns": 1,
+      "checks": [
+        {
+          "check": "cell_range_match",
+          "pass": false,
+          "detail": "contract=12, prompt=2, missing=8",
+          "missing_ranges": [
+            "D148",
+            "D161",
+            "E148",
+            "E161",
+            "F148",
+            "F161",
+            "G148",
+            "G161"
+          ],
+          "severity": "SOFT_WARN"
+        },
+        {
+          "check": "cell_count_match",
+          "pass": true,
+          "detail": "no explicit total found; skipping (natural format)",
+          "severity": "OK"
+        },
+        {
+          "check": "step_count_match",
+          "pass": true,
+          "detail": "contract=9, no explicit steps found (v5 natural format)",
+          "severity": "OK"
+        },
+        {
+          "check": "sheet_name_match",
+          "pass": true,
+          "detail": "contract=['BACKUP', 'CASHFLOW'], missing=[]",
+          "severity": "OK"
+        },
+        {
+          "check": "no_formula_leak",
+          "pass": true,
+          "detail": "0 formula leaks",
+          "severity": "OK"
+        },
+        {
+          "check": "no_value_leak",
+          "pass": true,
+          "detail": "0 value leaks out of 13 GT cells",
+          "severity": "OK"
+        },
+        {
+          "check": "final_target_first",
+          "pass": true,
+          "detail": "no explicit final target marker (natural format)",
+          "severity": "OK"
+        },
+        {
+          "check": "output_format",
+          "pass": true,
+          "detail": "output format found",
+          "severity": "OK"
+        },
+        {
+          "check": "header_in_prompt",
+          "pass": true,
+          "detail": "no column headers found in prompt",
+          "severity": "OK"
+        },
+        {
+          "check": "hint_specificity",
+          "pass": true,
+          "detail": "clean",
+          "severity": "OK"
+        },
+        {
+          "check": "evidence_scope",
+          "pass": true,
+          "detail": "referenced=1 mentioned=1 missing=0",
+          "severity": "OK"
+        },
+        {
+          "check": "exemplar_consistency",
+          "pass": true,
+          "severity": "OK",
+          "detail": "checked 6 col groups; CONFLICTS: CASHFLOW!H9: visible='=BACKUP!H491+BACKUP!H492+BACKU' vs GT pattern='=BACKUP!H#'; CASHFLOW!H11: visible='=H283+H282-BACKUP!H119' vs GT pattern='=BACKUP!H#'"
+        },
+        {
+          "check": "nl_gt_operation_consistency",
+          "pass": true,
+          "detail": "GT funcs: ['SUM']",
+          "severity": "OK"
+        },
+        {
+          "check": "unmatched_default_rule",
+          "pass": true,
+          "detail": "no default-rule phrase found in NL",
+          "severity": "OK"
+        },
+        {
+          "check": "volatile_function_freeze",
+          "pass": true,
+          "detail": "volatile_cells=0",
+          "severity": "OK"
+        },
+        {
+          "check": "direct_answer_leakage",
+          "pass": true,
+          "detail": "0 leaks out of 23 GT cells (0%)",
+          "severity": "OK"
+        }
+      ]
+    },
+    "pre_nl_local": {
+      "local_total": 58,
+      "local_label": "PENDING_NL",
+      "hard_fail_flags": [],
+      "warnings": [
+        "release_verdict_not_keep",
+        "nl_missing"
+      ],
+      "local_subscores": {
+        "family_clean": 25,
+        "target_integrity": 15,
+        "taxonomy": 10,
+        "semantic_signal": 8,
+        "nl_schema": 0,
+        "target_alignment": 0,
+        "business_specificity": 0,
+        "nl_risk": 0
+      }
+    }
+  },
+  "verify": {
+    "uniqueness": {
+      "total_gt_cells": 23,
+      "total_non_none": 23,
+      "block_reasons": [],
+      "warnings": [],
+      "checks": {
+        "rank_tie_risk": {
+          "rank_cells": 0,
+          "tie_issues": 0,
+          "details": []
+        },
+        "trivial_gt": {
+          "issues": []
+        },
+        "gt_type_consistency": {
+          "types": {
+            "int": 23
+          },
+          "mixed": false
+        },
+        "empty_gt": {
+          "count": 0,
+          "details": []
+        }
+      }
+    },
+    "src_chain": {
+      "hard_block": false,
+      "block_reasons": [],
+      "checks": {
+        "error_cells": {
+          "pass": true,
+          "count": 0,
+          "cells": []
+        },
+        "external_refs": {
+          "pass": true,
+          "count": 0,
+          "cells": []
+        },
+        "volatile_funcs": {
+          "pass": true,
+          "count": 0,
+          "cells": []
+        },
+        "missing_sheets": {
+          "pass": true,
+          "count": 0,
+          "sheets": []
+        },
+        "circular_refs": {
+          "pass": true,
+          "cycle_cells": []
+        }
+      },
+      "required_chain_scope": {
+        "external_ref_in_required_chain": 0,
+        "external_ref_in_other": 0,
+        "error_cells_in_required_chain": 0,
+        "error_cells_in_other": 0,
+        "required_chain_cells": 23
+      }
+    },
+    "solver_visibility": {
+      "contract_cells": 23,
+      "total_masked": 23,
+      "total_visible": 4163,
+      "depth": 10,
+      "block_reasons": [],
+      "warnings": [
+        "broken_chains:5/23"
+      ],
+      "checks": {
+        "broken_chains": {
+          "count": 5,
+          "checked": 23,
+          "details": [
+            {
+              "cell": "BACKUP!F161",
+              "missing_dep": "BACKUP!F160",
+              "formula": "=SUM(F148:F160)"
+            },
+            {
+              "cell": "BACKUP!G161",
+              "missing_dep": "BACKUP!G160",
+              "formula": "=SUM(G148:G160)"
+            },
+            {
+              "cell": "BACKUP!H161",
+              "missing_dep": "BACKUP!H160",
+              "formula": "=SUM(H148:H160)"
+            },
+            {
+              "cell": "BACKUP!E161",
+              "missing_dep": "BACKUP!E160",
+              "formula": "=SUM(E148:E160)"
+            },
+            {
+              "cell": "BACKUP!D161",
+              "missing_dep": "BACKUP!D160",
+              "formula": "=SUM(D148:D160)"
+            }
+          ]
+        },
+        "orphan_masks": {
+          "count": 0,
+          "details": []
+        },
+        "self_contained": {
+          "missing_sheets": []
+        }
+      }
+    },
+    "exemplar": {
+      "soft_block": false,
+      "block_reasons": [],
+      "checks": {
+        "pattern_coverage": {
+          "pass": true,
+          "total_gt_patterns": 2,
+          "total_src_patterns": 75,
+          "zero_exemplar_count": 0,
+          "low_exemplar_count": 0
+        },
+        "zero_exemplar_patterns": {
+          "pass": true,
+          "patterns": []
+        },
+        "low_exemplar_patterns": {
+          "pass": true,
+          "patterns": []
+        },
+        "func_coverage": {
+          "SUM": {
+            "total_masked": 5,
+            "visible_exemplars": 2348
+          },
+          "reference": {
+            "total_masked": 18,
+            "visible_exemplars": 4156
+          }
+        }
+      }
+    },
+    "shortcut": {
+      "shortcut_risk": 0.5,
+      "flags": [
+        {
+          "code": "SC3",
+          "description": "Copy-from-visible: 7/23 GT cells have nearby visible formula clones",
+          "affected_cells": 7,
+          "severity": "medium"
+        }
+      ]
+    },
+    "release_audit": {
+      "surface_single_sheet": false,
+      "surface_sheets": [
+        "BACKUP",
+        "CASHFLOW"
+      ],
+      "cross_sheet_actual": true,
+      "cross_sheet_ref_count": 13,
+      "referenced_sheets": [
+        "BACKUP"
+      ],
+      "target_shape": "summary_block",
+      "layer_sizes": [
+        13,
+        2,
+        1,
+        1,
+        1,
+        1,
+        1,
+        1,
+        1,
+        1
+      ],
+      "mask_last_total_cells": 23,
+      "layer_growth_ratios": [
+        0.1538,
+        0.5,
+        1.0,
+        1.0,
+        1.0,
+        1.0,
+        1.0,
+        1.0,
+        1.0
+      ],
+      "pattern_dominance_ratio": 0.5652,
+      "visible_clone_regions": 7,
+      "nearby_visible_clone_regions": 4,
+      "nearby_visible_clone_rows": 4,
+      "nearby_visible_clone_ratio": 4.0,
+      "promptability_score": 0.6,
+      "release_reasons": [
+        "parallel_block_leakage"
+      ],
+      "release_verdict": "REBUILD_REQUIRED"
+    }
+  },
+  "difficulty": {
+    "task_id": "cross_sheet__dag_ebbd34e83792",
+    "difficulty_score": 75.6,
+    "difficulty": "hard",
+    "depth": 10,
+    "total_masked": 23,
+    "is_cross_sheet": true,
+    "unique_patterns": 11,
+    "avg_complexity": 4.0,
+    "cross_refs": 13,
+    "visible_exemplar_ratio": 0.946,
+    "score_breakdown": {
+      "depth": 25,
+      "cross_sheet": 10,
+      "cell_count": 9.0,
+      "patterns": 15,
+      "complexity": 6.0,
+      "cross_refs": 10,
+      "vis_penalty": 0.5
+    }
+  }
+}

FormulaCascade_Benchmark_eval_200/T1_FRONTIER/internal/FCB-00089/ground_truth_full.json

@@ -0,0 +1,209 @@
+[
+  {
+    "sheet": "CASHFLOW",
+    "col": "H",
+    "row": 266,
+    "formula": "=BACKUP!H148",
+    "cached_value": 2847063,
+    "pattern_id": "pf_0010",
+    "layer": 1
+  },
+  {
+    "sheet": "CASHFLOW",
+    "col": "H",
+    "row": 267,
+    "formula": "=BACKUP!H149",
+    "cached_value": 11000,
+    "pattern_id": "pf_0010",
+    "layer": 1
+  },
+  {
+    "sheet": "CASHFLOW",
+    "col": "H",
+    "row": 268,
+    "formula": "=BACKUP!H150",
+    "cached_value": 0,
+    "pattern_id": "pf_0010",
+    "layer": 1
+  },
+  {
+    "sheet": "CASHFLOW",
+    "col": "H",
+    "row": 269,
+    "formula": "=BACKUP!H151",
+    "cached_value": 0,
+    "pattern_id": "pf_0010",
+    "layer": 1
+  },
+  {
+    "sheet": "CASHFLOW",
+    "col": "H",
+    "row": 270,
+    "formula": "=BACKUP!H152",
+    "cached_value": 0,
+    "pattern_id": "pf_0010",
+    "layer": 1
+  },
+  {
+    "sheet": "CASHFLOW",
+    "col": "H",
+    "row": 271,
+    "formula": "=BACKUP!H153",
+    "cached_value": 0,
+    "pattern_id": "pf_0010",
+    "layer": 1
+  },
+  {
+    "sheet": "CASHFLOW",
+    "col": "H",
+    "row": 272,
+    "formula": "=BACKUP!H154",
+    "cached_value": 0,
+    "pattern_id": "pf_0010",
+    "layer": 1
+  },
+  {
+    "sheet": "CASHFLOW",
+    "col": "H",
+    "row": 273,
+    "formula": "=BACKUP!H155",
+    "cached_value": 0,
+    "pattern_id": "pf_0010",
+    "layer": 1
+  },
+  {
+    "sheet": "CASHFLOW",
+    "col": "H",
+    "row": 274,
+    "formula": "=BACKUP!H156",
+    "cached_value": 0,
+    "pattern_id": "pf_0010",
+    "layer": 1
+  },
+  {
+    "sheet": "CASHFLOW",
+    "col": "H",
+    "row": 275,
+    "formula": "=BACKUP!H157",
+    "cached_value": 2500,
+    "pattern_id": "pf_0010",
+    "layer": 1
+  },
+  {
+    "sheet": "CASHFLOW",
+    "col": "H",
+    "row": 276,
+    "formula": "=BACKUP!H158",
+    "cached_value": 0,
+    "pattern_id": "pf_0010",
+    "layer": 1
+  },
+  {
+    "sheet": "CASHFLOW",
+    "col": "H",
+    "row": 277,
+    "formula": "=BACKUP!H159",
+    "cached_value": 0,
+    "pattern_id": "pf_0010",
+    "layer": 1
+  },
+  {
+    "sheet": "CASHFLOW",
+    "col": "H",
+    "row": 279,
+    "formula": "=BACKUP!H161",
+    "cached_value": 2860563,
+    "pattern_id": "pf_0010",
+    "layer": 1
+  },
+  {
+    "sheet": "BACKUP",
+    "col": "H",
+    "row": 148,
+    "formula": "=G161",
+    "cached_value": 2847063,
+    "pattern_id": "pf_0127",
+    "layer": 2
+  },
+  {
+    "sheet": "BACKUP",
+    "col": "H",
+    "row": 161,
+    "formula": "=SUM(H148:H160)",
+    "cached_value": 2860563,
+    "pattern_id": "pf_0128",
+    "layer": 2
+  },
+  {
+    "sheet": "BACKUP",
+    "col": "G",
+    "row": 161,
+    "formula": "=SUM(G148:G160)",
+    "cached_value": 2847063,
+    "pattern_id": "pf_0128",
+    "layer": 3
+  },
+  {
+    "sheet": "BACKUP",
+    "col": "G",
+    "row": 148,
+    "formula": "=F161",
+    "cached_value": 2835963,
+    "pattern_id": "pf_0127",
+    "layer": 4
+  },
+  {
+    "sheet": "BACKUP",
+    "col": "F",
+    "row": 161,
+    "formula": "=SUM(F148:F160)",
+    "cached_value": 2835963,
+    "pattern_id": "pf_0128",
+    "layer": 5
+  },
+  {
+    "sheet": "BACKUP",
+    "col": "F",
+    "row": 148,
+    "formula": "=E161",
+    "cached_value": 2828063,
+    "pattern_id": "pf_0127",
+    "layer": 6
+  },
+  {
+    "sheet": "BACKUP",
+    "col": "E",
+    "row": 161,
+    "formula": "=SUM(E148:E160)",
+    "cached_value": 2828063,
+    "pattern_id": "pf_0128",
+    "layer": 7
+  },
+  {
+    "sheet": "BACKUP",
+    "col": "E",
+    "row": 148,
+    "formula": "=D161",
+    "cached_value": 2821565,
+    "pattern_id": "pf_0127",
+    "layer": 8
+  },
+  {
+    "sheet": "BACKUP",
+    "col": "D",
+    "row": 161,
+    "formula": "=SUM(D148:D160)",
+    "cached_value": 2821565,
+    "pattern_id": "pf_0128",
+    "layer": 9
+  },
+  {
+    "sheet": "BACKUP",
+    "col": "D",
+    "row": 148,
+    "formula": "=C161",
+    "cached_value": 2817365,
+    "pattern_id": "pf_0127",
+    "layer": 10
+  }
+]

FormulaCascade_Benchmark_eval_200/T1_FRONTIER/internal/FCB-00089/ground_truth_target.json

@@ -0,0 +1,106 @@
+[
+  {
+    "sheet": "CASHFLOW",
+    "col": "H",
+    "row": 266,
+    "formula": "=BACKUP!H148",
+    "cached_value": 2847063,
+    "pattern_id": "pf_0010"
+  },
+  {
+    "sheet": "CASHFLOW",
+    "col": "H",
+    "row": 267,
+    "formula": "=BACKUP!H149",
+    "cached_value": 11000,
+    "pattern_id": "pf_0010"
+  },
+  {
+    "sheet": "CASHFLOW",
+    "col": "H",
+    "row": 268,
+    "formula": "=BACKUP!H150",
+    "cached_value": 0,
+    "pattern_id": "pf_0010"
+  },
+  {
+    "sheet": "CASHFLOW",
+    "col": "H",
+    "row": 269,
+    "formula": "=BACKUP!H151",
+    "cached_value": 0,
+    "pattern_id": "pf_0010"
+  },
+  {
+    "sheet": "CASHFLOW",
+    "col": "H",
+    "row": 270,
+    "formula": "=BACKUP!H152",
+    "cached_value": 0,
+    "pattern_id": "pf_0010"
+  },
+  {
+    "sheet": "CASHFLOW",
+    "col": "H",
+    "row": 271,
+    "formula": "=BACKUP!H153",
+    "cached_value": 0,
+    "pattern_id": "pf_0010"
+  },
+  {
+    "sheet": "CASHFLOW",
+    "col": "H",
+    "row": 272,
+    "formula": "=BACKUP!H154",
+    "cached_value": 0,
+    "pattern_id": "pf_0010"
+  },
+  {
+    "sheet": "CASHFLOW",
+    "col": "H",
+    "row": 273,
+    "formula": "=BACKUP!H155",
+    "cached_value": 0,
+    "pattern_id": "pf_0010"
+  },
+  {
+    "sheet": "CASHFLOW",
+    "col": "H",
+    "row": 274,
+    "formula": "=BACKUP!H156",
+    "cached_value": 0,
+    "pattern_id": "pf_0010"
+  },
+  {
+    "sheet": "CASHFLOW",
+    "col": "H",
+    "row": 275,
+    "formula": "=BACKUP!H157",
+    "cached_value": 2500,
+    "pattern_id": "pf_0010"
+  },
+  {
+    "sheet": "CASHFLOW",
+    "col": "H",
+    "row": 276,
+    "formula": "=BACKUP!H158",
+    "cached_value": 0,
+    "pattern_id": "pf_0010"
+  },
+  {
+    "sheet": "CASHFLOW",
+    "col": "H",
+    "row": 277,
+    "formula": "=BACKUP!H159",
+    "cached_value": 0,
+    "pattern_id": "pf_0010"
+  },
+  {
+    "sheet": "CASHFLOW",
+    "col": "H",
+    "row": 279,
+    "formula": "=BACKUP!H161",
+    "cached_value": 2860563,
+    "pattern_id": "pf_0010"
+  }
+]

FormulaCascade_Benchmark_eval_200/T1_FRONTIER/internal/FCB-00089/layers.json

@@ -0,0 +1,271 @@
+{
+  "dag_id": "dag_ebbd34e83792",
+  "file_id": "tracy_geaccone__40368__CFNNG02PL",
+  "category": "cross_sheet",
+  "surface_category": "cross_sheet",
+  "effective_category": "cross_sheet",
+  "depth": 10,
+  "quality": {
+    "chain_error_cells": 0,
+    "chain_external_cells": 0,
+    "is_clean": true
+  },
+  "layers": [
+    {
+      "layer_index": 1,
+      "new_pattern_groups": [
+        {
+          "region_ids": [
+            "rg_01397",
+            "rg_01398"
+          ],
+          "sheet": "CASHFLOW",
+          "col": "H",
+          "rows": [
+            266,
+            267,
+            268,
+            269,
+            270,
+            271,
+            272,
+            273,
+            274,
+            275,
+            276,
+            277,
+            279
+          ],
+          "row_ranges": "266-277,279",
+          "row_count": 13,
+          "pattern_id": "pf_0010",
+          "normalized_pattern": "=BACKUP![C,R-118]",
+          "sample_formula": "=BACKUP!H148"
+        }
+      ],
+      "new_eval_cells": 13,
+      "total_masked_cells": 13
+    },
+    {
+      "layer_index": 2,
+      "new_pattern_groups": [
+        {
+          "region_ids": [
+            "rg_04746"
+          ],
+          "sheet": "BACKUP",
+          "col": "H",
+          "rows": [
+            148
+          ],
+          "row_ranges": "148",
+          "row_count": 1,
+          "pattern_id": "pf_0127",
+          "normalized_pattern": "=[C-1,R+13]",
+          "sample_formula": "=G161"
+        },
+        {
+          "region_ids": [
+            "rg_04758"
+          ],
+          "sheet": "BACKUP",
+          "col": "H",
+          "rows": [
+            161
+          ],
+          "row_ranges": "161",
+          "row_count": 1,
+          "pattern_id": "pf_0128",
+          "normalized_pattern": "=SUM([C,R-13]:[C,R-1])",
+          "sample_formula": "=SUM(H148:H160)"
+        }
+      ],
+      "new_eval_cells": 2,
+      "total_masked_cells": 15
+    },
+    {
+      "layer_index": 3,
+      "new_pattern_groups": [
+        {
+          "region_ids": [
+            "rg_04757"
+          ],
+          "sheet": "BACKUP",
+          "col": "G",
+          "rows": [
+            161
+          ],
+          "row_ranges": "161",
+          "row_count": 1,
+          "pattern_id": "pf_0128",
+          "normalized_pattern": "=SUM([C,R-13]:[C,R-1])",
+          "sample_formula": "=SUM(G148:G160)"
+        }
+      ],
+      "new_eval_cells": 1,
+      "total_masked_cells": 16
+    },
+    {
+      "layer_index": 4,
+      "new_pattern_groups": [
+        {
+          "region_ids": [
+            "rg_04745"
+          ],
+          "sheet": "BACKUP",
+          "col": "G",
+          "rows": [
+            148
+          ],
+          "row_ranges": "148",
+          "row_count": 1,
+          "pattern_id": "pf_0127",
+          "normalized_pattern": "=[C-1,R+13]",
+          "sample_formula": "=F161"
+        }
+      ],
+      "new_eval_cells": 1,
+      "total_masked_cells": 17
+    },
+    {
+      "layer_index": 5,
+      "new_pattern_groups": [
+        {
+          "region_ids": [
+            "rg_04756"
+          ],
+          "sheet": "BACKUP",
+          "col": "F",
+          "rows": [
+            161
+          ],
+          "row_ranges": "161",
+          "row_count": 1,
+          "pattern_id": "pf_0128",
+          "normalized_pattern": "=SUM([C,R-13]:[C,R-1])",
+          "sample_formula": "=SUM(F148:F160)"
+        }
+      ],
+      "new_eval_cells": 1,
+      "total_masked_cells": 18
+    },
+    {
+      "layer_index": 6,
+      "new_pattern_groups": [
+        {
+          "region_ids": [
+            "rg_04744"
+          ],
+          "sheet": "BACKUP",
+          "col": "F",
+          "rows": [
+            148
+          ],
+          "row_ranges": "148",
+          "row_count": 1,
+          "pattern_id": "pf_0127",
+          "normalized_pattern": "=[C-1,R+13]",
+          "sample_formula": "=E161"
+        }
+      ],
+      "new_eval_cells": 1,
+      "total_masked_cells": 19
+    },
+    {
+      "layer_index": 7,
+      "new_pattern_groups": [
+        {
+          "region_ids": [
+            "rg_04755"
+          ],
+          "sheet": "BACKUP",
+          "col": "E",
+          "rows": [
+            161
+          ],
+          "row_ranges": "161",
+          "row_count": 1,
+          "pattern_id": "pf_0128",
+          "normalized_pattern": "=SUM([C,R-13]:[C,R-1])",
+          "sample_formula": "=SUM(E148:E160)"
+        }
+      ],
+      "new_eval_cells": 1,
+      "total_masked_cells": 20
+    },
+    {
+      "layer_index": 8,
+      "new_pattern_groups": [
+        {
+          "region_ids": [
+            "rg_04743"
+          ],
+          "sheet": "BACKUP",
+          "col": "E",
+          "rows": [
+            148
+          ],
+          "row_ranges": "148",
+          "row_count": 1,
+          "pattern_id": "pf_0127",
+          "normalized_pattern": "=[C-1,R+13]",
+          "sample_formula": "=D161"
+        }
+      ],
+      "new_eval_cells": 1,
+      "total_masked_cells": 21
+    },
+    {
+      "layer_index": 9,
+      "new_pattern_groups": [
+        {
+          "region_ids": [
+            "rg_04754"
+          ],
+          "sheet": "BACKUP",
+          "col": "D",
+          "rows": [
+            161
+          ],
+          "row_ranges": "161",
+          "row_count": 1,
+          "pattern_id": "pf_0128",
+          "normalized_pattern": "=SUM([C,R-13]:[C,R-1])",
+          "sample_formula": "=SUM(D148:D160)"
+        }
+      ],
+      "new_eval_cells": 1,
+      "total_masked_cells": 22
+    },
+    {
+      "layer_index": 10,
+      "new_pattern_groups": [
+        {
+          "region_ids": [
+            "rg_04742"
+          ],
+          "sheet": "BACKUP",
+          "col": "D",
+          "rows": [
+            148
+          ],
+          "row_ranges": "148",
+          "row_count": 1,
+          "pattern_id": "pf_0127",
+          "normalized_pattern": "=[C-1,R+13]",
+          "sample_formula": "=C161"
+        }
+      ],
+      "new_eval_cells": 1,
+      "total_masked_cells": 23
+    }
+  ],
+  "sink": {
+    "region_id": "rg_01398",
+    "sheet": "CASHFLOW",
+    "col": "H",
+    "pattern_id": "pf_0010",
+    "row_count": 1,
+    "family_size": 13
+  }
+}

FormulaCascade_Benchmark_eval_200/T1_FRONTIER/internal/FCB-00089/nl_task.json

@@ -0,0 +1,26 @@
+{
+  "task_id": "cross_sheet__dag_ebbd34e83792",
+  "prompt_en": "The CASHFLOW sheet is part of the Northern Natural Gas Group backup for the balance sheet and cash flow statement, with the PLAN month columns laid out across JAN, FEB, MAR, APR, MAY, and JUN. For the quarterly budget review, the May entries in the CASHFLOW sheet still need attention: please fill in the blank cells in the MAY column, specifically H266:H277 and H279. Some related monthly sections in this workbook feed into one another, so the surrounding month figures should be in place before these May cash flow entries are finalized. Please save the completed workbook as an .xlsx file.",
+  "prompt_cn": "这个工作簿里的 CASHFLOW 工作表属于 Northern Natural Gas Group 的资产负债表和现金流量表备份，PLAN 的月份栏按 JAN、FEB、MAR、APR、MAY、JUN 排列。为了季度预算 review，请把 CASHFLOW 工作表中 MAY 栏还空着的项目补完整，具体是 H266:H277 和 H279。工作簿里有些相关的月份区块会相互衔接，所以在最终确认这些 May 现金流项目之前，周边月份数据也需要先保持完整。请将完成后的工作簿保存为 .xlsx 文件。",
+  "quality_notes": "The prompt identifies the finance workbook, the CASHFLOW sheet, the MAY column target range, and the natural dependency context without giving formulas or operational hints.",
+  "post_check_issues": [],
+  "prompt_mode": "minimal",
+  "hint_leakage": {
+    "score": 4,
+    "level": "low",
+    "max_possible": 100,
+    "dimensions": {
+      "operation_words": 0,
+      "cell_range_density": 4,
+      "step_by_step": 0,
+      "column_operation_mapping": 0,
+      "formula_pattern_hints": 0
+    },
+    "operation_words_found": [],
+    "cell_ranges_found": 1
+  },
+  "version": "v7",
+  "model": "gpt-5.5",
+  "elapsed": 10.8,
+  "attempt": 1
+}

FormulaCascade_Benchmark_eval_200/T1_FRONTIER/internal/FCB-00089/release_qc.json

@@ -0,0 +1,58 @@
+{
+  "binary": true,
+  "binary_reason": "CORRECT — the masked cells are real and cleanly bounded, and the dependency chain is reconstructible from visible cross-sheet patterns despite being deep.",
+  "D1": {
+    "score": 5,
+    "reason": "All 23 contract cells are truly masked, there are no phantom cells, no contract misses, and no extra removed cells outside the contract. The visible neighboring formulas provide structural clues, but the task is not purely zero-reasoning because the solver must reconstruct the cross-sheet chain through BACKUP beginning/end balance rows."
+  },
+  "D2": {
+    "score": 5,
+    "reason": "The layer-1 GT formulas are consistent with the source workbook: CASHFLOW May cells directly reference the corresponding BACKUP H-row values, and the cached values match the visible source calculations, including H148 = G161 and H161 = SUM(H148:H160). The formulas are deterministic."
+  },
+  "D3": {
+    "score": 4,
+    "reason": "The prompt clearly identifies the target cells H266:H277 and H279 in the MAY column of CASHFLOW. It is somewhat high-level about the dependency chain and does not explicitly name BACKUP, but it is understandable and not contradictory."
+  },
+  "D4": {
+    "score": 5,
+    "reason": "Using only mask_last.xlsx and the NL prompt, the needed evidence is visible. CASHFLOW surrounding cells show the row-to-row BACKUP reference pattern, especially visible I-column formulas. BACKUP visible formulas to the right, such as J148=I161 and I161/J161 SUM formulas, reveal the beginning/end balance chain pattern, while visible constants in rows 149:159 and visible prior columns provide enough information to reconstruct the masked D:H chain and then the final May CASHFLOW entries.",
+    "d4_type": "ok"
+  },
+  "D5": {
+    "score": 4,
+    "reason": "The relevant source data and formulas appear internally consistent and the audited chain has no formula errors. There are some broader workbook quality blemishes such as external references and a visible #REF! in another sheet header, but they do not affect this task’s dependency chain."
+  },
+  "D6": {
+    "score": 4,
+    "reason": "The NL request sounds broadly like a workplace spreadsheet completion request and avoids benchmark jargon. It is slightly generic and cell-address-heavy, but still natural enough."
+  },
+  "total": 27,
+  "verdict": "RELEASE",
+  "verdict_reason": "High-quality chain-masked cross-sheet task: clean mask boundary, correct GT, and sufficient visible evidence for reconstruction. Minor source-workbook imperfections are outside the relevant chain.",
+  "frontier_hardness": {
+    "score": 3,
+    "reason": "The task has a deep dependency chain and cross-sheet references, but the formulas are simple and strongly supported by visible adjacent exemplars. A frontier model may need careful multi-hop reconstruction but should not be blocked by hidden constants or missing evidence.",
+    "fail_reason": "deep_chain",
+    "is_valid_hardness": true
+  },
+  "_prompt_chars": 71981,
+  "_timing_load_workbooks": 1.4,
+  "_timing_context": 0.06,
+  "_timing_api": 64.22,
+  "local_difficulty": {
+    "difficulty_score": 75.6,
+    "difficulty": "hard",
+    "depth": 10,
+    "total_masked": 23,
+    "is_cross_sheet": true,
+    "unique_patterns": 11,
+    "avg_complexity": 4,
+    "cross_refs": 13,
+    "visible_exemplar_ratio": 0.946
+  },
+  "task_id": "cross_sheet__dag_ebbd34e83792",
+  "elapsed": 65.7,
+  "publish_decision": "YES",
+  "release_tier": "GOLD",
+  "hard_block_reasons": []
+}

FormulaCascade_Benchmark_eval_200/T1_FRONTIER/internal/FCB-00089/target_contract.json

@@ -0,0 +1,207 @@
+{
+  "task_id": "cross_sheet__dag_ebbd34e83792",
+  "category": "cross_sheet",
+  "depth": 10,
+  "final_target": {
+    "regions": [
+      {
+        "sheet": "CASHFLOW",
+        "column": "H",
+        "column_header": "MAY",
+        "cell_range": "H266:H277, H279",
+        "cell_count": 13,
+        "rows": [
+          266,
+          267,
+          268,
+          269,
+          270,
+          271,
+          272,
+          273,
+          274,
+          275,
+          276,
+          277,
+          279
+        ],
+        "first_row_label": "Plant - Beg. Balance",
+        "last_row_label": "Plant - End. Balance"
+      }
+    ],
+    "cell_count": 13,
+    "formula_families": []
+  },
+  "prerequisite_steps": [
+    {
+      "layer": 10,
+      "regions": [
+        {
+          "sheet": "BACKUP",
+          "column": "D",
+          "column_header": "Asset Price Risk Management (Noncurrent)- End. Balance",
+          "cell_range": "D148",
+          "cell_count": 1,
+          "rows": [
+            148
+          ],
+          "first_row_label": "Plant - Beg. Balance",
+          "last_row_label": ""
+        }
+      ],
+      "cell_count": 1
+    },
+    {
+      "layer": 9,
+      "regions": [
+        {
+          "sheet": "BACKUP",
+          "column": "D",
+          "column_header": "Asset Price Risk Management (Noncurrent)- End. Balance",
+          "cell_range": "D161",
+          "cell_count": 1,
+          "rows": [
+            161
+          ],
+          "first_row_label": "Plant - End. Balance",
+          "last_row_label": ""
+        }
+      ],
+      "cell_count": 1
+    },
+    {
+      "layer": 8,
+      "regions": [
+        {
+          "sheet": "BACKUP",
+          "column": "E",
+          "column_header": "Asset Price Risk Management (Noncurrent)- End. Balance",
+          "cell_range": "E148",
+          "cell_count": 1,
+          "rows": [
+            148
+          ],
+          "first_row_label": "Plant - Beg. Balance",
+          "last_row_label": ""
+        }
+      ],
+      "cell_count": 1
+    },
+    {
+      "layer": 7,
+      "regions": [
+        {
+          "sheet": "BACKUP",
+          "column": "E",
+          "column_header": "Asset Price Risk Management (Noncurrent)- End. Balance",
+          "cell_range": "E161",
+          "cell_count": 1,
+          "rows": [
+            161
+          ],
+          "first_row_label": "Plant - End. Balance",
+          "last_row_label": ""
+        }
+      ],
+      "cell_count": 1
+    },
+    {
+      "layer": 6,
+      "regions": [
+        {
+          "sheet": "BACKUP",
+          "column": "F",
+          "column_header": "Asset Price Risk Management (Noncurrent)- End. Balance",
+          "cell_range": "F148",
+          "cell_count": 1,
+          "rows": [
+            148
+          ],
+          "first_row_label": "Plant - Beg. Balance",
+          "last_row_label": ""
+        }
+      ],
+      "cell_count": 1
+    },
+    {
+      "layer": 5,
+      "regions": [
+        {
+          "sheet": "BACKUP",
+          "column": "F",
+          "column_header": "Asset Price Risk Management (Noncurrent)- End. Balance",
+          "cell_range": "F161",
+          "cell_count": 1,
+          "rows": [
+            161
+          ],
+          "first_row_label": "Plant - End. Balance",
+          "last_row_label": ""
+        }
+      ],
+      "cell_count": 1
+    },
+    {
+      "layer": 4,
+      "regions": [
+        {
+          "sheet": "BACKUP",
+          "column": "G",
+          "column_header": "Asset Price Risk Management (Noncurrent)- End. Balance",
+          "cell_range": "G148",
+          "cell_count": 1,
+          "rows": [
+            148
+          ],
+          "first_row_label": "Plant - Beg. Balance",
+          "last_row_label": ""
+        }
+      ],
+      "cell_count": 1
+    },
+    {
+      "layer": 3,
+      "regions": [
+        {
+          "sheet": "BACKUP",
+          "column": "G",
+          "column_header": "Asset Price Risk Management (Noncurrent)- End. Balance",
+          "cell_range": "G161",
+          "cell_count": 1,
+          "rows": [
+            161
+          ],
+          "first_row_label": "Plant - End. Balance",
+          "last_row_label": ""
+        }
+      ],
+      "cell_count": 1
+    },
+    {
+      "layer": 2,
+      "regions": [
+        {
+          "sheet": "BACKUP",
+          "column": "H",
+          "column_header": "Asset Price Risk Management (Noncurrent)- End. Balance",
+          "cell_range": "H148, H161",
+          "cell_count": 2,
+          "rows": [
+            148,
+            161
+          ],
+          "first_row_label": "Plant - Beg. Balance",
+          "last_row_label": "Plant - End. Balance"
+        }
+      ],
+      "cell_count": 2
+    }
+  ],
+  "total_prerequisite_cells": 10,
+  "total_masked_cells": 23,
+  "ratio_total_vs_final": 1.8,
+  "sheets_involved": [
+    "BACKUP",
+    "CASHFLOW"
+  ]
+}

FormulaCascade_Benchmark_eval_200/T1_FRONTIER/internal/FCB-00089/task_meta.json

@@ -0,0 +1,55 @@
+{
+  "fcb_id": "FCB-00089",
+  "task_id": "cross_sheet__dag_ebbd34e83792",
+  "tier": "T1_FRONTIER",
+  "category": "cross_sheet",
+  "depth": 10,
+  "total_masked": 23,
+  "is_cross_sheet": true,
+  "prompt_en": "The CASHFLOW sheet is part of the Northern Natural Gas Group backup for the balance sheet and cash flow statement, with the PLAN month columns laid out across JAN, FEB, MAR, APR, MAY, and JUN. For the quarterly budget review, the May entries in the CASHFLOW sheet still need attention: please fill in the blank cells in the MAY column, specifically H266:H277 and H279. Some related monthly sections in this workbook feed into one another, so the surrounding month figures should be in place before these May cash flow entries are finalized. Please save the completed workbook as an .xlsx file.",
+  "prompt_cn": "这个工作簿里的 CASHFLOW 工作表属于 Northern Natural Gas Group 的资产负债表和现金流量表备份，PLAN 的月份栏按 JAN、FEB、MAR、APR、MAY、JUN 排列。为了季度预算 review，请把 CASHFLOW 工作表中 MAY 栏还空着的项目补完整，具体是 H266:H277 和 H279。工作簿里有些相关的月份区块会相互衔接，所以在最终确认这些 May 现金流项目之前，周边月份数据也需要先保持完整。请将完成后的工作簿保存为 .xlsx 文件。",
+  "qc": {
+    "total": 27,
+    "verdict": "RELEASE",
+    "D1": 5,
+    "D2": 5,
+    "D3": 4,
+    "D4": 5,
+    "D5": 4,
+    "D6": 4,
+    "frontier_hardness": 3,
+    "local_difficulty": 75.6
+  },
+  "source_file_id": "tracy_geaccone__40368__CFNNG02PL",
+  "inferred_domain": "finance",
+  "domain_confidence": 0.5,
+  "sheet_profiles": [
+    {
+      "name": "BACKUP",
+      "used_range": "A1:W553",
+      "row_count": 553,
+      "col_count": 23,
+      "has_header": false,
+      "title_hint": "BACKUP",
+      "header_info": null
+    },
+    {
+      "name": "CASHFLOW",
+      "used_range": "A1:AU521",
+      "row_count": 521,
+      "col_count": 47,
+      "has_header": false,
+      "title_hint": "CASHFLOW",
+      "header_info": null
+    },
+    {
+      "name": "CF-Partnership, NNG & 53K",
+      "used_range": "A1:AV70",
+      "row_count": 70,
+      "col_count": 48,
+      "has_header": false,
+      "title_hint": "CF Partnership, NNG & 53K",
+      "header_info": null
+    }
+  ]
+}