diff --git a/FormulaCascade_Benchmark_eval_200/T3_MEDIUM/internal/FCB-01955/layers_02_all/layer_01/layer_01_ground_truth.json b/FormulaCascade_Benchmark_eval_200/T3_MEDIUM/internal/FCB-01955/layers_02_all/layer_01/layer_01_ground_truth.json
new file mode 100644
index 0000000000000000000000000000000000000000..5b37f0869e56690d61525c35495a8481bf89d99a
--- /dev/null
+++ b/FormulaCascade_Benchmark_eval_200/T3_MEDIUM/internal/FCB-01955/layers_02_all/layer_01/layer_01_ground_truth.json
@@ -0,0 +1,58 @@
+[
+  {
+    "sheet": "Power West Price Peak",
+    "col": "S",
+    "row": 15,
+    "formula": "=S4-S26",
+    "cached_value": 0,
+    "pattern_id": "pf_0002"
+  },
+  {
+    "sheet": "Power West Price Peak",
+    "col": "S",
+    "row": 16,
+    "formula": "=S5-S27",
+    "cached_value": 0,
+    "pattern_id": "pf_0002"
+  },
+  {
+    "sheet": "Power West Price Peak",
+    "col": "S",
+    "row": 17,
+    "formula": "=S6-S28",
+    "cached_value": 0.6666666666666643,
+    "pattern_id": "pf_0002"
+  },
+  {
+    "sheet": "Power West Price Peak",
+    "col": "S",
+    "row": 18,
+    "formula": "=S7-S29",
+    "cached_value": 0.8633333333333333,
+    "pattern_id": "pf_0002"
+  },
+  {
+    "sheet": "Power West Price Peak",
+    "col": "S",
+    "row": 19,
+    "formula": "=S8-S30",
+    "cached_value": 1.3333333333333321,
+    "pattern_id": "pf_0002"
+  },
+  {
+    "sheet": "Power West Price Peak",
+    "col": "S",
+    "row": 20,
+    "formula": "=S9-S31",
+    "cached_value": 1.6650705092659308,
+    "pattern_id": "pf_0002"
+  },
+  {
+    "sheet": "Power West Price Peak",
+    "col": "S",
+    "row": 21,
+    "formula": "=S10-S32",
+    "cached_value": 1.6650705092659308,
+    "pattern_id": "pf_0002"
+  }
+]
\ No newline at end of file
diff --git a/FormulaCascade_Benchmark_eval_200/T3_MEDIUM/internal/FCB-04095/audit.json b/FormulaCascade_Benchmark_eval_200/T3_MEDIUM/internal/FCB-04095/audit.json
new file mode 100644
index 0000000000000000000000000000000000000000..c8f095bc8a8ce68b48bfea9a04b5cae1c7deb8f7
--- /dev/null
+++ b/FormulaCascade_Benchmark_eval_200/T3_MEDIUM/internal/FCB-04095/audit.json
@@ -0,0 +1,724 @@
+{
+  "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 140 cells"
+        },
+        {
+          "check": "header_grounding",
+          "pass": true,
+          "severity": "pass",
+          "detail": "1/1 final regions have column_header"
+        },
+        {
+          "check": "mask_consistency",
+          "pass": true,
+          "detail": "mask_last=72706B, src=84379B"
+        },
+        {
+          "check": "dirty_family",
+          "pass": true,
+          "detail": "0 dirty cells"
+        },
+        {
+          "check": "ratio_gate",
+          "pass": true,
+          "detail": "ratio=3.0 (total=420, final=140)"
+        },
+        {
+          "check": "dedup_gate",
+          "pass": true,
+          "detail": "0 duplicate cells across layers"
+        },
+        {
+          "check": "gt_uniqueness",
+          "pass": true,
+          "detail": "4 unique values across 420 cells [WARN: low_discrimination layer_1_ground_truth: 138/140=99%; layer_2_ground_truth: 276/280=99%]"
+        },
+        {
+          "check": "tail_artifact",
+          "pass": true,
+          "detail": "0 bad values"
+        },
+        {
+          "check": "unrecoverable_leaf",
+          "pass": true,
+          "detail": "hidden_const=278 hidden:[L2:Daily totals!E2[2463], L2:Daily totals!E3[2463], L2:Daily totals!E4[2463]]",
+          "hidden_const_cells": [
+            "L2:Daily totals!E2[2463]",
+            "L2:Daily totals!E3[2463]",
+            "L2:Daily totals!E4[2463]",
+            "L2:Daily totals!E5[2463]",
+            "L2:Daily totals!E6[2463]",
+            "L2:Daily totals!E7[2463]",
+            "L2:Daily totals!E8[2463]",
+            "L2:Daily totals!E9[2463]",
+            "L2:Daily totals!E10[2463]",
+            "L2:Daily totals!E11[2463]",
+            "L2:Daily totals!E12[2463]",
+            "L2:Daily totals!E13[2463]",
+            "L2:Daily totals!E14[2463]",
+            "L2:Daily totals!E15[2463]",
+            "L2:Daily totals!E16[2463]",
+            "L2:Daily totals!E17[2463]",
+            "L2:Daily totals!E18[2463]",
+            "L2:Daily totals!E19[2463]",
+            "L2:Daily totals!E20[2463]",
+            "L2:Daily totals!E21[2463]",
+            "L2:Daily totals!E22[2463]",
+            "L2:Daily totals!E23[2463]",
+            "L2:Daily totals!E24[2463]",
+            "L2:Daily totals!E25[2463]",
+            "L2:Daily totals!E26[2463]",
+            "L2:Daily totals!E27[2463]",
+            "L2:Daily totals!E28[2463]",
+            "L2:Daily totals!E29[2463]",
+            "L2:Daily totals!E30[2463]",
+            "L2:Daily totals!E31[2463]",
+            "L2:Daily totals!E32[2463]",
+            "L2:Daily totals!E33[2463]",
+            "L2:Daily totals!E34[2463]",
+            "L2:Daily totals!E35[2463]",
+            "L2:Daily totals!E36[2463]",
+            "L2:Daily totals!E37[2463]",
+            "L2:Daily totals!E38[2463]",
+            "L2:Daily totals!E39[2463]",
+            "L2:Daily totals!E40[2463]",
+            "L2:Daily totals!E41[2463]",
+            "L2:Daily totals!E42[2463]",
+            "L2:Daily totals!E43[2463]",
+            "L2:Daily totals!E44[2463]",
+            "L2:Daily totals!E45[2463]",
+            "L2:Daily totals!E46[2463]",
+            "L2:Daily totals!E47[2463]",
+            "L2:Daily totals!E48[2463]",
+            "L2:Daily totals!E49[2463]",
+            "L2:Daily totals!E50[2463]",
+            "L2:Daily totals!E51[2463]",
+            "L2:Daily totals!E52[2463]",
+            "L2:Daily totals!E53[2463]",
+            "L2:Daily totals!E54[2463]",
+            "L2:Daily totals!E55[2463]",
+            "L2:Daily totals!E56[2463]",
+            "L2:Daily totals!E57[2463]",
+            "L2:Daily totals!E58[2463]",
+            "L2:Daily totals!E59[2463]",
+            "L2:Daily totals!E60[2463]",
+            "L2:Daily totals!E61[2463]",
+            "L2:Daily totals!E62[2463]",
+            "L2:Daily totals!E63[2463]",
+            "L2:Daily totals!E64[2463]",
+            "L2:Daily totals!E65[2463]",
+            "L2:Daily totals!E66[2463]",
+            "L2:Daily totals!E67[2463]",
+            "L2:Daily totals!E68[2463]",
+            "L2:Daily totals!E69[2463]",
+            "L2:Daily totals!E70[2463]",
+            "L2:Daily totals!E71[2463]",
+            "L2:Daily totals!E72[2463]",
+            "L2:Daily totals!E73[2463]",
+            "L2:Daily totals!E74[2463]",
+            "L2:Daily totals!E75[2463]",
+            "L2:Daily totals!E76[2463]",
+            "L2:Daily totals!E77[2463]",
+            "L2:Daily totals!E78[2463]",
+            "L2:Daily totals!E79[2463]",
+            "L2:Daily totals!E80[2463]",
+            "L2:Daily totals!E81[2463]",
+            "L2:Daily totals!E82[2463]",
+            "L2:Daily totals!E83[2463]",
+            "L2:Daily totals!E84[2463]",
+            "L2:Daily totals!E85[2463]",
+            "L2:Daily totals!E86[2463]",
+            "L2:Daily totals!E87[2463]",
+            "L2:Daily totals!E88[2463]",
+            "L2:Daily totals!E89[2463]",
+            "L2:Daily totals!E90[2463]",
+            "L2:Daily totals!E91[2463]",
+            "L2:Daily totals!E92[2463]",
+            "L2:Daily totals!E93[2463]",
+            "L2:Daily totals!E94[2463]",
+            "L2:Daily totals!E95[2463]",
+            "L2:Daily totals!E96[2463]",
+            "L2:Daily totals!E97[2463]",
+            "L2:Daily totals!E98[2463]",
+            "L2:Daily totals!E99[2463]",
+            "L2:Daily totals!E100[2463]",
+            "L2:Daily totals!E101[2463]",
+            "L2:Daily totals!E102[2463]",
+            "L2:Daily totals!E103[2463]",
+            "L2:Daily totals!E104[2463]",
+            "L2:Daily totals!E105[2463]",
+            "L2:Daily totals!E106[2463]",
+            "L2:Daily totals!E107[2463]",
+            "L2:Daily totals!E108[2463]",
+            "L2:Daily totals!E109[2463]",
+            "L2:Daily totals!E110[2463]",
+            "L2:Daily totals!E111[2463]",
+            "L2:Daily totals!E112[2463]",
+            "L2:Daily totals!E113[2463]",
+            "L2:Daily totals!E114[2463]",
+            "L2:Daily totals!E115[2463]",
+            "L2:Daily totals!E116[2463]",
+            "L2:Daily totals!E117[2463]",
+            "L2:Daily totals!E118[2463]",
+            "L2:Daily totals!E119[2463]",
+            "L2:Daily totals!E120[2463]",
+            "L2:Daily totals!E121[2463]",
+            "L2:Daily totals!E122[2463]",
+            "L2:Daily totals!E123[2463]",
+            "L2:Daily totals!E124[2463]",
+            "L2:Daily totals!E125[2463]",
+            "L2:Daily totals!E126[2463]",
+            "L2:Daily totals!E127[2463]",
+            "L2:Daily totals!E128[2463]",
+            "L2:Daily totals!E129[2463]",
+            "L2:Daily totals!E130[2463]",
+            "L2:Daily totals!E131[2463]",
+            "L2:Daily totals!E132[2463]",
+            "L2:Daily totals!E133[2463]",
+            "L2:Daily totals!E134[2463]",
+            "L2:Daily totals!E135[2463]",
+            "L2:Daily totals!E136[2463]",
+            "L2:Daily totals!E137[2463]",
+            "L2:Daily totals!E138[2463]",
+            "L2:Daily totals!E139[2463]",
+            "L2:Daily totals!E140[2463]",
+            "L2:Daily totals!F2[2463]",
+            "L2:Daily totals!F3[2463]",
+            "L2:Daily totals!F4[2463]",
+            "L2:Daily totals!F5[2463]",
+            "L2:Daily totals!F6[2463]",
+            "L2:Daily totals!F7[2463]",
+            "L2:Daily totals!F8[2463]",
+            "L2:Daily totals!F9[2463]",
+            "L2:Daily totals!F10[2463]",
+            "L2:Daily totals!F11[2463]",
+            "L2:Daily totals!F12[2463]",
+            "L2:Daily totals!F13[2463]",
+            "L2:Daily totals!F14[2463]",
+            "L2:Daily totals!F15[2463]",
+            "L2:Daily totals!F16[2463]",
+            "L2:Daily totals!F17[2463]",
+            "L2:Daily totals!F18[2463]",
+            "L2:Daily totals!F19[2463]",
+            "L2:Daily totals!F20[2463]",
+            "L2:Daily totals!F21[2463]",
+            "L2:Daily totals!F22[2463]",
+            "L2:Daily totals!F23[2463]",
+            "L2:Daily totals!F24[2463]",
+            "L2:Daily totals!F25[2463]",
+            "L2:Daily totals!F26[2463]",
+            "L2:Daily totals!F27[2463]",
+            "L2:Daily totals!F28[2463]",
+            "L2:Daily totals!F29[2463]",
+            "L2:Daily totals!F30[2463]",
+            "L2:Daily totals!F31[2463]",
+            "L2:Daily totals!F32[2463]",
+            "L2:Daily totals!F33[2463]",
+            "L2:Daily totals!F34[2463]",
+            "L2:Daily totals!F35[2463]",
+            "L2:Daily totals!F36[2463]",
+            "L2:Daily totals!F37[2463]",
+            "L2:Daily totals!F38[2463]",
+            "L2:Daily totals!F39[2463]",
+            "L2:Daily totals!F40[2463]",
+            "L2:Daily totals!F41[2463]",
+            "L2:Daily totals!F42[2463]",
+            "L2:Daily totals!F43[2463]",
+            "L2:Daily totals!F44[2463]",
+            "L2:Daily totals!F45[2463]",
+            "L2:Daily totals!F46[2463]",
+            "L2:Daily totals!F47[2463]",
+            "L2:Daily totals!F48[2463]",
+            "L2:Daily totals!F49[2463]",
+            "L2:Daily totals!F50[2463]",
+            "L2:Daily totals!F51[2463]",
+            "L2:Daily totals!F52[2463]",
+            "L2:Daily totals!F53[2463]",
+            "L2:Daily totals!F54[2463]",
+            "L2:Daily totals!F55[2463]",
+            "L2:Daily totals!F56[2463]",
+            "L2:Daily totals!F57[2463]",
+            "L2:Daily totals!F58[2463]",
+            "L2:Daily totals!F59[2463]",
+            "L2:Daily totals!F60[2463]",
+            "L2:Daily totals!F61[2463]",
+            "L2:Daily totals!F62[2463]",
+            "L2:Daily totals!F63[2463]",
+            "L2:Daily totals!F64[2463]",
+            "L2:Daily totals!F65[2463]",
+            "L2:Daily totals!F66[2463]",
+            "L2:Daily totals!F67[2463]",
+            "L2:Daily totals!F68[2463]",
+            "L2:Daily totals!F69[2463]",
+            "L2:Daily totals!F70[2463]",
+            "L2:Daily totals!F71[2463]",
+            "L2:Daily totals!F72[2463]",
+            "L2:Daily totals!F73[2463]",
+            "L2:Daily totals!F74[2463]",
+            "L2:Daily totals!F75[2463]",
+            "L2:Daily totals!F76[2463]",
+            "L2:Daily totals!F77[2463]",
+            "L2:Daily totals!F78[2463]",
+            "L2:Daily totals!F79[2463]",
+            "L2:Daily totals!F80[2463]",
+            "L2:Daily totals!F81[2463]",
+            "L2:Daily totals!F82[2463]",
+            "L2:Daily totals!F83[2463]",
+            "L2:Daily totals!F84[2463]",
+            "L2:Daily totals!F85[2463]",
+            "L2:Daily totals!F86[2463]",
+            "L2:Daily totals!F87[2463]",
+            "L2:Daily totals!F88[2463]",
+            "L2:Daily totals!F89[2463]",
+            "L2:Daily totals!F90[2463]",
+            "L2:Daily totals!F91[2463]",
+            "L2:Daily totals!F92[2463]",
+            "L2:Daily totals!F93[2463]",
+            "L2:Daily totals!F94[2463]",
+            "L2:Daily totals!F95[2463]",
+            "L2:Daily totals!F96[2463]",
+            "L2:Daily totals!F97[2463]",
+            "L2:Daily totals!F98[2463]",
+            "L2:Daily totals!F99[2463]",
+            "L2:Daily totals!F100[2463]",
+            "L2:Daily totals!F101[2463]",
+            "L2:Daily totals!F102[2463]",
+            "L2:Daily totals!F103[2463]",
+            "L2:Daily totals!F104[2463]",
+            "L2:Daily totals!F105[2463]",
+            "L2:Daily totals!F106[2463]",
+            "L2:Daily totals!F107[2463]",
+            "L2:Daily totals!F108[2463]",
+            "L2:Daily totals!F109[2463]",
+            "L2:Daily totals!F110[2463]",
+            "L2:Daily totals!F111[2463]",
+            "L2:Daily totals!F112[2463]",
+            "L2:Daily totals!F113[2463]",
+            "L2:Daily totals!F114[2463]",
+            "L2:Daily totals!F115[2463]",
+            "L2:Daily totals!F116[2463]",
+            "L2:Daily totals!F117[2463]",
+            "L2:Daily totals!F118[2463]",
+            "L2:Daily totals!F119[2463]",
+            "L2:Daily totals!F120[2463]",
+            "L2:Daily totals!F121[2463]",
+            "L2:Daily totals!F122[2463]",
+            "L2:Daily totals!F123[2463]",
+            "L2:Daily totals!F124[2463]",
+            "L2:Daily totals!F125[2463]",
+            "L2:Daily totals!F126[2463]",
+            "L2:Daily totals!F127[2463]",
+            "L2:Daily totals!F128[2463]",
+            "L2:Daily totals!F129[2463]",
+            "L2:Daily totals!F130[2463]",
+            "L2:Daily totals!F131[2463]",
+            "L2:Daily totals!F132[2463]",
+            "L2:Daily totals!F133[2463]",
+            "L2:Daily totals!F134[2463]",
+            "L2:Daily totals!F135[2463]",
+            "L2:Daily totals!F136[2463]",
+            "L2:Daily totals!F137[2463]",
+            "L2:Daily totals!F138[2463]",
+            "L2:Daily totals!F139[2463]",
+            "L2:Daily totals!F140[2463]"
+          ]
+        },
+        {
+          "check": "adjacent_column_leak",
+          "pass": true,
+          "detail": "leaked: Daily totals!F→G(138/140), Daily totals!D→E(138/140), Daily totals!F→E(138/140), Daily totals!E→F(138/140), Daily totals!G→F(138/140)"
+        },
+        {
+          "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": 2,
+      "checks": [
+        {
+          "check": "cell_range_match",
+          "pass": false,
+          "detail": "contract=3, prompt=1, missing=1",
+          "missing_ranges": [
+            "F2:F141"
+          ],
+          "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=1, no explicit steps found (v5 natural format)",
+          "severity": "OK"
+        },
+        {
+          "check": "sheet_name_match",
+          "pass": true,
+          "detail": "contract=['Daily totals'], 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 140 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": false,
+          "detail": "referenced=1 mentioned=0 missing=1 [NF Purchase Input Sheet]",
+          "severity": "SOFT_WARN"
+        },
+        {
+          "check": "exemplar_consistency",
+          "pass": true,
+          "severity": "OK",
+          "detail": "checked 3 col groups; CONFLICTS: Daily totals!E143: visible='=SUMIF($B$2:$B$136,\"f\",E2:E136' vs GT pattern='=SUMIF('NF Purchase Input Shee'; Daily totals!E144: visible='=SUMIF($B$2:$B$136,\"n\",E2:E136' vs GT pattern='=SUMIF('NF Purchase Input Shee'"
+        },
+        {
+          "check": "nl_gt_operation_consistency",
+          "pass": true,
+          "detail": "GT funcs: ['IF', 'SUM', 'SUMIF']",
+          "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 420 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": 420,
+      "total_non_none": 420,
+      "block_reasons": [],
+      "warnings": [
+        "mixed_gt_types:{'int': 416, 'float': 4}"
+      ],
+      "checks": {
+        "rank_tie_risk": {
+          "rank_cells": 0,
+          "tie_issues": 0,
+          "details": []
+        },
+        "trivial_gt": {
+          "issues": []
+        },
+        "gt_type_consistency": {
+          "types": {
+            "int": 416,
+            "float": 4
+          },
+          "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": 420
+      }
+    },
+    "solver_visibility": {
+      "contract_cells": 420,
+      "total_masked": 420,
+      "total_visible": 1023,
+      "depth": 2,
+      "block_reasons": [],
+      "warnings": [],
+      "checks": {
+        "broken_chains": {
+          "count": 0,
+          "checked": 420,
+          "details": []
+        },
+        "orphan_masks": {
+          "count": 0,
+          "details": []
+        },
+        "self_contained": {
+          "missing_sheets": []
+        }
+      }
+    },
+    "exemplar": {
+      "soft_block": true,
+      "block_reasons": [
+        "zero_exemplar:2_patterns"
+      ],
+      "checks": {
+        "pattern_coverage": {
+          "pass": false,
+          "total_gt_patterns": 3,
+          "total_src_patterns": 21,
+          "zero_exemplar_count": 2,
+          "low_exemplar_count": 0
+        },
+        "zero_exemplar_patterns": {
+          "pass": false,
+          "patterns": [
+            {
+              "pattern": "=IF(REF=0,0,(REF/REF))",
+              "total_in_src": 140,
+              "sample_formula": "=IF(F2=0,0,(F2/E2))"
+            },
+            {
+              "pattern": "=SUMIF(RANGE,REF,RANGE)",
+              "total_in_src": 278,
+              "sample_formula": "=SUMIF('NF Purchase Input Sheet'!$C$9:$C$22463,C2,'NF Purchase Input Sheet'!$D$9"
+            }
+          ]
+        },
+        "low_exemplar_patterns": {
+          "pass": true,
+          "patterns": []
+        },
+        "func_coverage": {
+          "SUM": {
+            "total_masked": 2,
+            "visible_exemplars": 9
+          },
+          "IF": {
+            "total_masked": 140,
+            "visible_exemplars": 2374
+          },
+          "SUMIF": {
+            "total_masked": 278,
+            "visible_exemplars": 6
+          }
+        }
+      }
+    },
+    "shortcut": {
+      "shortcut_risk": 1.0,
+      "flags": [
+        {
+          "code": "SC1",
+          "description": "Constant fill: 99% of GT cells = 0",
+          "affected_cells": 414,
+          "severity": "high"
+        },
+        {
+          "code": "SC4",
+          "description": "All-zero: 414/420 GT cells are 0",
+          "affected_cells": 414,
+          "severity": "high"
+        }
+      ]
+    },
+    "release_audit": {
+      "surface_single_sheet": true,
+      "surface_sheets": [
+        "Daily totals"
+      ],
+      "cross_sheet_actual": true,
+      "cross_sheet_ref_count": 556,
+      "referenced_sheets": [
+        "NF Purchase Input Sheet"
+      ],
+      "target_shape": "single_column_series",
+      "layer_sizes": [
+        140,
+        280
+      ],
+      "mask_last_total_cells": 420,
+      "layer_growth_ratios": [
+        2.0
+      ],
+      "pattern_dominance_ratio": 0.3333,
+      "visible_clone_regions": 1,
+      "nearby_visible_clone_regions": 1,
+      "nearby_visible_clone_rows": 1,
+      "nearby_visible_clone_ratio": 0.0036,
+      "promptability_score": 0.72,
+      "release_reasons": [
+        "family_large",
+        "cross_sheet_metadata_mismatch"
+      ],
+      "release_verdict": "REVISION_POOL"
+    }
+  },
+  "difficulty": {
+    "task_id": "cross_sheet__dag_09ec68c3408c",
+    "difficulty_score": 77.4,
+    "difficulty": "hard",
+    "depth": 2,
+    "total_masked": 420,
+    "is_cross_sheet": true,
+    "unique_patterns": 5,
+    "avg_complexity": 7.0,
+    "cross_refs": 556,
+    "visible_exemplar_ratio": 0.007,
+    "score_breakdown": {
+      "depth": 7,
+      "cross_sheet": 10,
+      "cell_count": 15,
+      "patterns": 15,
+      "complexity": 10.5,
+      "cross_refs": 10,
+      "vis_penalty": 9.9
+    }
+  }
+}
\ No newline at end of file
diff --git a/FormulaCascade_Benchmark_eval_200/T3_MEDIUM/internal/FCB-04095/ground_truth_full.json b/FormulaCascade_Benchmark_eval_200/T3_MEDIUM/internal/FCB-04095/ground_truth_full.json
new file mode 100644
index 0000000000000000000000000000000000000000..fa6d732691ac4eddaebecad77fc2c42ad8911333
--- /dev/null
+++ b/FormulaCascade_Benchmark_eval_200/T3_MEDIUM/internal/FCB-04095/ground_truth_full.json
@@ -0,0 +1,3782 @@
+[
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diff --git a/FormulaCascade_Benchmark_eval_200/T3_MEDIUM/internal/FCB-04095/ground_truth_target.json b/FormulaCascade_Benchmark_eval_200/T3_MEDIUM/internal/FCB-04095/ground_truth_target.json
new file mode 100644
index 0000000000000000000000000000000000000000..3b12a394458b4d4705350abec2c0ebe01dab325f
--- /dev/null
+++ b/FormulaCascade_Benchmark_eval_200/T3_MEDIUM/internal/FCB-04095/ground_truth_target.json
@@ -0,0 +1,1122 @@
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+            140
+          ],
+          "row_ranges": "2-140",
+          "row_count": 139,
+          "pattern_id": "pf_0004",
+          "normalized_pattern": "=SUMIF('NFPURCHASEINPUTSHEET'![$C,$9]:[$C,$22463],[C-2,R],'NFPURCHASEINPUTSHEET'![$D,$9]:[$D,$22247])",
+          "sample_formula": "=SUMIF('NF Purchase Input Sheet'!$C$9:$C$22463,C2,'NF Purchase Input Sheet'!$D$9:$D$22247)"
+        },
+        {
+          "region_ids": [
+            "rg_00014"
+          ],
+          "sheet": "Daily totals",
+          "col": "E",
+          "rows": [
+            141
+          ],
+          "row_ranges": "141",
+          "row_count": 1,
+          "pattern_id": "pf_0007",
+          "normalized_pattern": "=SUM([C,R-139]:[C,R-5])",
+          "sample_formula": "=SUM(E2:E136)"
+        },
+        {
+          "region_ids": [
+            "rg_00005"
+          ],
+          "sheet": "Daily totals",
+          "col": "F",
+          "rows": [
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+            140
+          ],
+          "row_ranges": "2-140",
+          "row_count": 139,
+          "pattern_id": "pf_0005",
+          "normalized_pattern": "=SUMIF('NFPURCHASEINPUTSHEET'![$C,$9]:[$C,$22463],[C-3,R],'NFPURCHASEINPUTSHEET'![$F,$9]:[$F,$22247])",
+          "sample_formula": "=SUMIF('NF Purchase Input Sheet'!$C$9:$C$22463,C2,'NF Purchase Input Sheet'!$F$9:$F$22247)"
+        },
+        {
+          "region_ids": [
+            "rg_00015"
+          ],
+          "sheet": "Daily totals",
+          "col": "F",
+          "rows": [
+            141
+          ],
+          "row_ranges": "141",
+          "row_count": 1,
+          "pattern_id": "pf_0007",
+          "normalized_pattern": "=SUM([C,R-139]:[C,R-5])",
+          "sample_formula": "=SUM(F2:F136)"
+        }
+      ],
+      "new_eval_cells": 280,
+      "total_masked_cells": 420
+    }
+  ],
+  "sink": {
+    "region_id": "rg_00002",
+    "sheet": "Daily totals",
+    "col": "G",
+    "pattern_id": "pf_0002",
+    "row_count": 140,
+    "family_size": 140
+  }
+}
\ No newline at end of file
diff --git a/FormulaCascade_Benchmark_eval_200/T3_MEDIUM/internal/FCB-04095/mask_last.xlsx b/FormulaCascade_Benchmark_eval_200/T3_MEDIUM/internal/FCB-04095/mask_last.xlsx
new file mode 100644
index 0000000000000000000000000000000000000000..1be29f596d16b0b77a48aa954f053c9ef9e028e0
Binary files /dev/null and b/FormulaCascade_Benchmark_eval_200/T3_MEDIUM/internal/FCB-04095/mask_last.xlsx differ
diff --git a/FormulaCascade_Benchmark_eval_200/T3_MEDIUM/internal/FCB-04095/nl_task.json b/FormulaCascade_Benchmark_eval_200/T3_MEDIUM/internal/FCB-04095/nl_task.json
new file mode 100644
index 0000000000000000000000000000000000000000..87e63ebd493d8f81fcbff1a6269639c44f271fea
--- /dev/null
+++ b/FormulaCascade_Benchmark_eval_200/T3_MEDIUM/internal/FCB-04095/nl_task.json
@@ -0,0 +1,26 @@
+{
+  "task_id": "cross_sheet__dag_09ec68c3408c",
+  "prompt_en": "The Daily totals sheet is part of a sales workbook that tracks ticket activity by Commodity, Weight (lbs.), Price, and product categories such as #1 Copper, #2 Copper, #1 Steel, and #2 Steel. Please complete the blank values in the Average Price column on the Daily totals sheet, specifically G2:G141. Some of the product and ticket-related entries in the workbook feed into the Daily totals summary, so those underlying fields need to be in place for the Average Price column to make sense. When finished, save the completed workbook as an .xlsx file.",
+  "prompt_cn": "这个销售工作簿里的 Daily totals 工作表用于跟踪按 Commodity、Weight (lbs.)、Price 以及 #1 Copper、#2 Copper、#1 Steel、#2 Steel 等产品类别整理的票据信息。请补全 Daily totals 工作表中 Average Price 列的空白值，位置是 G2:G141。工作簿里有些与产品和票据相关的条目会影响 Daily totals 汇总内容，所以这些基础字段需要先完整，Average Price 列才会有意义。完成后，请将补全后的工作簿保存为 .xlsx 文件。",
+  "quality_notes": "The prompt identifies the workbook context, sheet, target column, and range without giving formulas or operational hints. It mentions the natural dependency between underlying entries and the summary column without spelling out any method.",
+  "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": 11.6,
+  "attempt": 1
+}
\ No newline at end of file
diff --git a/FormulaCascade_Benchmark_eval_200/T3_MEDIUM/internal/FCB-04095/release_qc.json b/FormulaCascade_Benchmark_eval_200/T3_MEDIUM/internal/FCB-04095/release_qc.json
new file mode 100644
index 0000000000000000000000000000000000000000..ef63dc631fe5c42ae75c38b9563e3dc9615ff0ba
--- /dev/null
+++ b/FormulaCascade_Benchmark_eval_200/T3_MEDIUM/internal/FCB-04095/release_qc.json
@@ -0,0 +1,58 @@
+{
+  "binary": true,
+  "binary_reason": "CORRECT: the mask is clean, target/prerequisite cells are real, and the dependency chain is reconstructible from visible headers, formulas, and workbook structure.",
+  "D1": {
+    "score": 5,
+    "reason": "All 420 contract cells are truly masked, with no contract misses and no extra masked cells. The target ranges are within the actual Daily totals sheet data range. There is no concerning leakage: visible formulas in summary rows provide structural clues but do not make G2:G141 or E/F2:F141 trivially copyable."
+  },
+  "D2": {
+    "score": 5,
+    "reason": "The layer-1 GT formulas consistently compute Average Price as dollars divided by weight with a zero-dollar guard, e.g. =IF(F2=0,0,(F2/E2)). This is deterministic and matches the visible workbook semantics. The sampled cached values are consistent with the formula pattern."
+  },
+  "D3": {
+    "score": 4,
+    "reason": "The NL prompt clearly identifies the target sheet and final range G2:G141 and explains the business meaning of Average Price. It also hints that underlying product/ticket fields must be in place, but it does not explicitly name the prerequisite E/F ranges or the NF Purchase Input Sheet, so there is a minor clarity gap."
+  },
+  "D4": {
+    "score": 4,
+    "reason": "Using only mask_last.xlsx plus the prompt, the task appears solvable with effort. The Daily totals headers show Count, Weight, $, and Average Price; visible D-column COUNTIF formulas reveal that rows summarize products from the NF Purchase Input Sheet by commodity/product; the blank E and F columns are naturally inferred as SUMIF-style totals for weight and dollars; and G is inferable as dollars divided by weight. Row 141 is also inferable from the visible D141 total formula and its Totals label. The main minor gap is that the exact source ranges/columns for E and F require inspection and inference from the underlying sheet rather than being directly shown in a visible exemplar.",
+    "d4_type": "ok"
+  },
+  "D5": {
+    "score": 4,
+    "reason": "The source workbook appears structurally sound with meaningful Daily totals headers and deterministic formulas. There are no indicated circular references, broken formulas, or corrupted values. Minor quality concerns are the sparse/blank headers in some sheets and unusually oversized/mismatched SUMIF reference ranges, though these appear inherited from the source and do not break the task."
+  },
+  "D6": {
+    "score": 5,
+    "reason": "The prompt sounds like a plausible workplace request about completing a sales workbook. It avoids benchmark jargon and uses natural business language."
+  },
+  "total": 27,
+  "verdict": "RELEASE",
+  "verdict_reason": "High-quality task: clean masking, correct GT, realistic NL, and a reconstructible cross-sheet dependency chain. Minor clarity/source-range quirks do not undermine publishability.",
+  "frontier_hardness": {
+    "score": 3,
+    "reason": "A frontier model would need to reconstruct multiple masked columns, infer SUMIF-based cross-sheet dependencies, handle the Totals row, and then compute Average Price. However, the business semantics and visible D-column formulas provide enough guidance, so this is moderately hard rather than likely impossible.",
+    "fail_reason": "cross_sheet_multi_hop",
+    "is_valid_hardness": true
+  },
+  "_prompt_chars": 201087,
+  "_timing_load_workbooks": 0.49,
+  "_timing_context": 0.03,
+  "_timing_api": 43.11,
+  "local_difficulty": {
+    "difficulty_score": 77.4,
+    "difficulty": "hard",
+    "depth": 2,
+    "total_masked": 420,
+    "is_cross_sheet": true,
+    "unique_patterns": 5,
+    "avg_complexity": 7,
+    "cross_refs": 556,
+    "visible_exemplar_ratio": 0.007
+  },
+  "task_id": "cross_sheet__dag_09ec68c3408c",
+  "elapsed": 43.6,
+  "publish_decision": "YES",
+  "release_tier": "GOLD",
+  "hard_block_reasons": []
+}
\ No newline at end of file
diff --git a/FormulaCascade_Benchmark_eval_200/T3_MEDIUM/internal/FCB-04095/target_contract.json b/FormulaCascade_Benchmark_eval_200/T3_MEDIUM/internal/FCB-04095/target_contract.json
new file mode 100644
index 0000000000000000000000000000000000000000..4fb99c068399de3d3fce6891fef93a9fb103ff77
--- /dev/null
+++ b/FormulaCascade_Benchmark_eval_200/T3_MEDIUM/internal/FCB-04095/target_contract.json
@@ -0,0 +1,480 @@
+{
+  "task_id": "cross_sheet__dag_09ec68c3408c",
+  "category": "cross_sheet",
+  "depth": 2,
+  "final_target": {
+    "regions": [
+      {
+        "sheet": "Daily totals",
+        "column": "G",
+        "column_header": "Average Price",
+        "cell_range": "G2:G141",
+        "cell_count": 140,
+        "rows": [
+          2,
+          3,
+          4,
+          5,
+          6,
+          7,
+          8,
+          9,
+          10,
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+          141
+        ],
+        "first_row_label": "f",
+        "last_row_label": "Totals"
+      }
+    ],
+    "cell_count": 140,
+    "formula_families": [
+      "conditional"
+    ]
+  },
+  "prerequisite_steps": [
+    {
+      "layer": 2,
+      "regions": [
+        {
+          "sheet": "Daily totals",
+          "column": "E",
+          "column_header": "Weight",
+          "cell_range": "E2:E141",
+          "cell_count": 140,
+          "rows": [
+            2,
+            3,
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+            140,
+            141
+          ],
+          "first_row_label": "f",
+          "last_row_label": "Totals"
+        },
+        {
+          "sheet": "Daily totals",
+          "column": "F",
+          "column_header": "$",
+          "cell_range": "F2:F141",
+          "cell_count": 140,
+          "rows": [
+            2,
+            3,
+            4,
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+            137,
+            138,
+            139,
+            140,
+            141
+          ],
+          "first_row_label": "f",
+          "last_row_label": "Totals"
+        }
+      ],
+      "cell_count": 280
+    }
+  ],
+  "total_prerequisite_cells": 280,
+  "total_masked_cells": 420,
+  "ratio_total_vs_final": 3.0,
+  "sheets_involved": [
+    "Daily totals"
+  ]
+}
\ No newline at end of file
diff --git a/FormulaCascade_Benchmark_eval_200/T3_MEDIUM/internal/FCB-04095/task_meta.json b/FormulaCascade_Benchmark_eval_200/T3_MEDIUM/internal/FCB-04095/task_meta.json
new file mode 100644
index 0000000000000000000000000000000000000000..853f0d76e2b7738f06567f3d8f6f5bef6911decd
--- /dev/null
+++ b/FormulaCascade_Benchmark_eval_200/T3_MEDIUM/internal/FCB-04095/task_meta.json
@@ -0,0 +1,75 @@
+{
+  "fcb_id": "FCB-04095",
+  "task_id": "cross_sheet__dag_09ec68c3408c",
+  "tier": "T3_MEDIUM",
+  "category": "cross_sheet",
+  "depth": 2,
+  "total_masked": 420,
+  "is_cross_sheet": true,
+  "prompt_en": "The Daily totals sheet is part of a sales workbook that tracks ticket activity by Commodity, Weight (lbs.), Price, and product categories such as #1 Copper, #2 Copper, #1 Steel, and #2 Steel. Please complete the blank values in the Average Price column on the Daily totals sheet, specifically G2:G141. Some of the product and ticket-related entries in the workbook feed into the Daily totals summary, so those underlying fields need to be in place for the Average Price column to make sense. When finished, save the completed workbook as an .xlsx file.",
+  "prompt_cn": "这个销售工作簿里的 Daily totals 工作表用于跟踪按 Commodity、Weight (lbs.)、Price 以及 #1 Copper、#2 Copper、#1 Steel、#2 Steel 等产品类别整理的票据信息。请补全 Daily totals 工作表中 Average Price 列的空白值，位置是 G2:G141。工作簿里有些与产品和票据相关的条目会影响 Daily totals 汇总内容，所以这些基础字段需要先完整，Average Price 列才会有意义。完成后，请将补全后的工作簿保存为 .xlsx 文件。",
+  "qc": {
+    "total": 27,
+    "verdict": "RELEASE",
+    "D1": 5,
+    "D2": 5,
+    "D3": 4,
+    "D4": 4,
+    "D5": 4,
+    "D6": 5,
+    "frontier_hardness": 3,
+    "local_difficulty": 77.4
+  },
+  "source_file_id": "125414d1319023705-lookup-with-multiple-criteria-on-multiple-tabs-indexmatch",
+  "inferred_domain": "sales",
+  "domain_confidence": 0.5,
+  "sheet_profiles": [
+    {
+      "name": "List",
+      "used_range": "A4:A144",
+      "row_count": 141,
+      "col_count": 1,
+      "has_header": false,
+      "title_hint": "List",
+      "header_info": null
+    },
+    {
+      "name": "NF Purchase Input Sheet",
+      "used_range": "A1:H1197",
+      "row_count": 1197,
+      "col_count": 8,
+      "has_header": false,
+      "title_hint": "NF Purchase Input Sheet",
+      "header_info": null
+    },
+    {
+      "name": "Daily totals",
+      "used_range": "A1:G148",
+      "row_count": 148,
+      "col_count": 7,
+      "has_header": true,
+      "title_hint": "Daily totals",
+      "header_info": {
+        "sheet": "Daily totals",
+        "header_row": 1,
+        "headers": {
+          "A": "Ferrous",
+          "C": "Products",
+          "D": "Count",
+          "E": "Weight",
+          "F": "$",
+          "G": "Average Price"
+        }
+      }
+    },
+    {
+      "name": "Price",
+      "used_range": "A1:G141",
+      "row_count": 141,
+      "col_count": 7,
+      "has_header": false,
+      "title_hint": "Price",
+      "header_info": null
+    }
+  ]
+}
\ No newline at end of file
diff --git a/FormulaCascade_Benchmark_eval_200/T3_MEDIUM/internal/FCB-04181/audit.json b/FormulaCascade_Benchmark_eval_200/T3_MEDIUM/internal/FCB-04181/audit.json
new file mode 100644
index 0000000000000000000000000000000000000000..4ee70bebe7d4ef866d0e1f91bf0a52468d9ff415
--- /dev/null
+++ b/FormulaCascade_Benchmark_eval_200/T3_MEDIUM/internal/FCB-04181/audit.json
@@ -0,0 +1,411 @@
+{
+  "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=80698B, src=98096B"
+        },
+        {
+          "check": "dirty_family",
+          "pass": true,
+          "detail": "0 dirty cells"
+        },
+        {
+          "check": "ratio_gate",
+          "pass": true,
+          "detail": "ratio=2.0 (total=10, final=5)"
+        },
+        {
+          "check": "dedup_gate",
+          "pass": true,
+          "detail": "0 duplicate cells across layers"
+        },
+        {
+          "check": "gt_uniqueness",
+          "pass": true,
+          "detail": "4 unique values across 10 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,
+          "severity": null,
+          "detail": "5 lookups"
+        },
+        {
+          "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": 2,
+      "checks": [
+        {
+          "check": "cell_range_match",
+          "pass": true,
+          "detail": "contract=2, 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=1, no explicit steps found (v5 natural format)",
+          "severity": "OK"
+        },
+        {
+          "check": "sheet_name_match",
+          "pass": false,
+          "detail": "contract=['Summary TOTY 23-24', 'Team of the Year 23-24 (Alif)'], missing=['Team of the Year 23-24 (Alif)']",
+          "severity": "INFO"
+        },
+        {
+          "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": false,
+          "detail": "referenced=1 mentioned=0 missing=1 [Team of the Year 23-24 (Alif)]",
+          "severity": "SOFT_WARN"
+        },
+        {
+          "check": "exemplar_consistency",
+          "pass": true,
+          "severity": "OK",
+          "detail": "checked 2 col groups; CONFLICTS: Summary TOTY 23-24!AG19: visible='='Team of the Year 23-24 (Tari' vs GT pattern='='Team of the Year #-# (Alif)''; Summary TOTY 23-24!AG20: visible='='Team of the Year 23-24 (Tari' vs GT pattern='='Team of the Year #-# (Alif)''"
+        },
+        {
+          "check": "nl_gt_operation_consistency",
+          "pass": false,
+          "detail": "GT funcs: ['VLOOKUP']; MISMATCHES: GT uses VLOOKUP but NL doesn't mention any of: find, look up, lookup, match",
+          "severity": "SOFT_WARN"
+        },
+        {
+          "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 10 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": 10,
+      "total_non_none": 10,
+      "block_reasons": [],
+      "warnings": [],
+      "checks": {
+        "rank_tie_risk": {
+          "rank_cells": 0,
+          "tie_issues": 0,
+          "details": []
+        },
+        "trivial_gt": {
+          "issues": []
+        },
+        "gt_type_consistency": {
+          "types": {
+            "str": 10
+          },
+          "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": 10
+      }
+    },
+    "solver_visibility": {
+      "contract_cells": 10,
+      "total_masked": 10,
+      "total_visible": 7445,
+      "depth": 2,
+      "block_reasons": [],
+      "warnings": [],
+      "checks": {
+        "broken_chains": {
+          "count": 0,
+          "checked": 10,
+          "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": 11,
+          "zero_exemplar_count": 0,
+          "low_exemplar_count": 0
+        },
+        "zero_exemplar_patterns": {
+          "pass": true,
+          "patterns": []
+        },
+        "low_exemplar_patterns": {
+          "pass": true,
+          "patterns": []
+        },
+        "func_coverage": {
+          "arithmetic": {
+            "total_masked": 5,
+            "visible_exemplars": 704
+          },
+          "VLOOKUP": {
+            "total_masked": 5,
+            "visible_exemplars": 443
+          }
+        }
+      }
+    },
+    "shortcut": {
+      "shortcut_risk": 0.0,
+      "flags": []
+    },
+    "release_audit": {
+      "surface_single_sheet": false,
+      "surface_sheets": [
+        "Summary TOTY 23-24",
+        "Team of the Year 23-24 (Alif)"
+      ],
+      "cross_sheet_actual": true,
+      "cross_sheet_ref_count": 5,
+      "referenced_sheets": [
+        "Team of the Year 23-24 (Alif)"
+      ],
+      "target_shape": "summary_block",
+      "layer_sizes": [
+        5,
+        5
+      ],
+      "mask_last_total_cells": 10,
+      "layer_growth_ratios": [
+        1.0
+      ],
+      "pattern_dominance_ratio": 0.5,
+      "visible_clone_regions": 2,
+      "nearby_visible_clone_regions": 1,
+      "nearby_visible_clone_rows": 5,
+      "nearby_visible_clone_ratio": 1.0,
+      "promptability_score": 0.6,
+      "release_reasons": [
+        "parallel_block_leakage"
+      ],
+      "release_verdict": "REBUILD_REQUIRED"
+    }
+  },
+  "difficulty": {
+    "task_id": "cross_sheet__dag_4706957570b3",
+    "difficulty_score": 40.5,
+    "difficulty": "medium",
+    "depth": 2,
+    "total_masked": 10,
+    "is_cross_sheet": true,
+    "unique_patterns": 2,
+    "avg_complexity": 3.0,
+    "cross_refs": 5,
+    "visible_exemplar_ratio": 0.861,
+    "score_breakdown": {
+      "depth": 7,
+      "cross_sheet": 10,
+      "cell_count": 6.6,
+      "patterns": 6,
+      "complexity": 4.5,
+      "cross_refs": 5,
+      "vis_penalty": 1.4
+    }
+  }
+}
\ No newline at end of file
diff --git a/FormulaCascade_Benchmark_eval_200/T3_MEDIUM/internal/FCB-04181/ground_truth_full.json b/FormulaCascade_Benchmark_eval_200/T3_MEDIUM/internal/FCB-04181/ground_truth_full.json
new file mode 100644
index 0000000000000000000000000000000000000000..b0846b2ba792432e2aaaf6365daf586b6c7802dc
--- /dev/null
+++ b/FormulaCascade_Benchmark_eval_200/T3_MEDIUM/internal/FCB-04181/ground_truth_full.json
@@ -0,0 +1,92 @@
+[
+  {
+    "sheet": "Summary TOTY 23-24",
+    "col": "AG",
+    "row": 9,
+    "formula": "='Team of the Year 23-24 (Alif)'!N37",
+    "cached_value": "Manchester City",
+    "pattern_id": "pf_0021",
+    "layer": 1
+  },
+  {
+    "sheet": "Summary TOTY 23-24",
+    "col": "AG",
+    "row": 10,
+    "formula": "='Team of the Year 23-24 (Alif)'!N38",
+    "cached_value": "Liverpool FC",
+    "pattern_id": "pf_0021",
+    "layer": 1
+  },
+  {
+    "sheet": "Summary TOTY 23-24",
+    "col": "AG",
+    "row": 11,
+    "formula": "='Team of the Year 23-24 (Alif)'!N39",
+    "cached_value": "West Ham United",
+    "pattern_id": "pf_0021",
+    "layer": 1
+  },
+  {
+    "sheet": "Summary TOTY 23-24",
+    "col": "AG",
+    "row": 12,
+    "formula": "='Team of the Year 23-24 (Alif)'!N40",
+    "cached_value": "[Person_99]",
+    "pattern_id": "pf_0021",
+    "layer": 1
+  },
+  {
+    "sheet": "Summary TOTY 23-24",
+    "col": "AG",
+    "row": 13,
+    "formula": "='Team of the Year 23-24 (Alif)'!N41",
+    "cached_value": "West Ham United",
+    "pattern_id": "pf_0021",
+    "layer": 1
+  },
+  {
+    "sheet": "Team of the Year 23-24 (Alif)",
+    "col": "N",
+    "row": 37,
+    "formula": "=VLOOKUP(M37,CMFL,2,FALSE)",
+    "cached_value": "Manchester City",
+    "pattern_id": "pf_0015",
+    "layer": 2
+  },
+  {
+    "sheet": "Team of the Year 23-24 (Alif)",
+    "col": "N",
+    "row": 38,
+    "formula": "=VLOOKUP(M38,CMFL,2,FALSE)",
+    "cached_value": "Liverpool FC",
+    "pattern_id": "pf_0015",
+    "layer": 2
+  },
+  {
+    "sheet": "Team of the Year 23-24 (Alif)",
+    "col": "N",
+    "row": 39,
+    "formula": "=VLOOKUP(M39,CMFL,2,FALSE)",
+    "cached_value": "West Ham United",
+    "pattern_id": "pf_0015",
+    "layer": 2
+  },
+  {
+    "sheet": "Team of the Year 23-24 (Alif)",
+    "col": "N",
+    "row": 40,
+    "formula": "=VLOOKUP(M40,CMFL,2,FALSE)",
+    "cached_value": "[Person_99]",
+    "pattern_id": "pf_0015",
+    "layer": 2
+  },
+  {
+    "sheet": "Team of the Year 23-24 (Alif)",
+    "col": "N",
+    "row": 41,
+    "formula": "=VLOOKUP(M41,CMFL,2,FALSE)",
+    "cached_value": "West Ham United",
+    "pattern_id": "pf_0015",
+    "layer": 2
+  }
+]
\ No newline at end of file
diff --git a/FormulaCascade_Benchmark_eval_200/T3_MEDIUM/internal/FCB-04181/ground_truth_target.json b/FormulaCascade_Benchmark_eval_200/T3_MEDIUM/internal/FCB-04181/ground_truth_target.json
new file mode 100644
index 0000000000000000000000000000000000000000..94852003d81d53c49ff7d181a90c5d58fc24c7ea
--- /dev/null
+++ b/FormulaCascade_Benchmark_eval_200/T3_MEDIUM/internal/FCB-04181/ground_truth_target.json
@@ -0,0 +1,42 @@
+[
+  {
+    "sheet": "Summary TOTY 23-24",
+    "col": "AG",
+    "row": 9,
+    "formula": "='Team of the Year 23-24 (Alif)'!N37",
+    "cached_value": "Manchester City",
+    "pattern_id": "pf_0021"
+  },
+  {
+    "sheet": "Summary TOTY 23-24",
+    "col": "AG",
+    "row": 10,
+    "formula": "='Team of the Year 23-24 (Alif)'!N38",
+    "cached_value": "Liverpool FC",
+    "pattern_id": "pf_0021"
+  },
+  {
+    "sheet": "Summary TOTY 23-24",
+    "col": "AG",
+    "row": 11,
+    "formula": "='Team of the Year 23-24 (Alif)'!N39",
+    "cached_value": "West Ham United",
+    "pattern_id": "pf_0021"
+  },
+  {
+    "sheet": "Summary TOTY 23-24",
+    "col": "AG",
+    "row": 12,
+    "formula": "='Team of the Year 23-24 (Alif)'!N40",
+    "cached_value": "[Person_99]",
+    "pattern_id": "pf_0021"
+  },
+  {
+    "sheet": "Summary TOTY 23-24",
+    "col": "AG",
+    "row": 13,
+    "formula": "='Team of the Year 23-24 (Alif)'!N41",
+    "cached_value": "West Ham United",
+    "pattern_id": "pf_0021"
+  }
+]
\ No newline at end of file
diff --git a/FormulaCascade_Benchmark_eval_200/T3_MEDIUM/internal/FCB-04181/layers.json b/FormulaCascade_Benchmark_eval_200/T3_MEDIUM/internal/FCB-04181/layers.json
new file mode 100644
index 0000000000000000000000000000000000000000..2b741588eaaef2b1c5202ea107b9316e387605f1
--- /dev/null
+++ b/FormulaCascade_Benchmark_eval_200/T3_MEDIUM/internal/FCB-04181/layers.json
@@ -0,0 +1,75 @@
+{
+  "dag_id": "dag_4706957570b3",
+  "file_id": "870420d1716934060-barclays-premier-league-best-11-for-2024-toty-23-24-premier-league-alif",
+  "category": "cross_sheet",
+  "surface_category": "cross_sheet",
+  "effective_category": "cross_sheet",
+  "depth": 2,
+  "quality": {
+    "chain_error_cells": 0,
+    "chain_external_cells": 0,
+    "is_clean": true
+  },
+  "layers": [
+    {
+      "layer_index": 1,
+      "new_pattern_groups": [
+        {
+          "region_ids": [
+            "rg_00125"
+          ],
+          "sheet": "Summary TOTY 23-24",
+          "col": "AG",
+          "rows": [
+            9,
+            10,
+            11,
+            12,
+            13
+          ],
+          "row_ranges": "9-13",
+          "row_count": 5,
+          "pattern_id": "pf_0021",
+          "normalized_pattern": "='TEAMOFTHEYEAR23-24(ALIF)'![C-19,R+28]",
+          "sample_formula": "='Team of the Year 23-24 (Alif)'!N37"
+        }
+      ],
+      "new_eval_cells": 5,
+      "total_masked_cells": 5
+    },
+    {
+      "layer_index": 2,
+      "new_pattern_groups": [
+        {
+          "region_ids": [
+            "rg_00113"
+          ],
+          "sheet": "Team of the Year 23-24 (Alif)",
+          "col": "N",
+          "rows": [
+            37,
+            38,
+            39,
+            40,
+            41
+          ],
+          "row_ranges": "37-41",
+          "row_count": 5,
+          "pattern_id": "pf_0015",
+          "normalized_pattern": "=VLOOKUP([C-1,R],CMFL,2,FALSE)",
+          "sample_formula": "=VLOOKUP(M37,CMFL,2,FALSE)"
+        }
+      ],
+      "new_eval_cells": 5,
+      "total_masked_cells": 10
+    }
+  ],
+  "sink": {
+    "region_id": "rg_00125",
+    "sheet": "Summary TOTY 23-24",
+    "col": "AG",
+    "pattern_id": "pf_0021",
+    "row_count": 5,
+    "family_size": 5
+  }
+}
\ No newline at end of file
diff --git a/FormulaCascade_Benchmark_eval_200/T3_MEDIUM/internal/FCB-04181/mask_last.xlsx b/FormulaCascade_Benchmark_eval_200/T3_MEDIUM/internal/FCB-04181/mask_last.xlsx
new file mode 100644
index 0000000000000000000000000000000000000000..9b3d06e41f49f28daf760ff17c5b9887442844d9
Binary files /dev/null and b/FormulaCascade_Benchmark_eval_200/T3_MEDIUM/internal/FCB-04181/mask_last.xlsx differ
diff --git a/FormulaCascade_Benchmark_eval_200/T3_MEDIUM/internal/FCB-04181/nl_task.json b/FormulaCascade_Benchmark_eval_200/T3_MEDIUM/internal/FCB-04181/nl_task.json
new file mode 100644
index 0000000000000000000000000000000000000000..078dc16dda90249aef6c32a204c4d1f7235862c5
--- /dev/null
+++ b/FormulaCascade_Benchmark_eval_200/T3_MEDIUM/internal/FCB-04181/nl_task.json
@@ -0,0 +1,26 @@
+{
+  "task_id": "cross_sheet__dag_4706957570b3",
+  "prompt_en": "The \"Summary TOTY 23-24\" sheet is a Team of the Year 2023 - 2024 ranking summary, with position labels such as GK, RB, and RCB alongside Player and Club information. Please fill in the blank Club entries in column AG for rows 9 through 13 on \"Summary TOTY 23-24\" (AG9:AG13). Some related blank fields in the workbook feed into this summary, so those surrounding player and ranking details should be in place before the Club column is finalized. Save the completed workbook as an .xlsx file.",
+  "prompt_cn": "“Summary TOTY 23-24”工作表是一份 Team of the Year 2023 - 2024 的排名汇总，里面有 GK、RB、RCB 等位置标签，以及 Player 和 Club 等信息。请填写“Summary TOTY 23-24”中 AG 列第 9 到第 13 行的空白 Club 项（AG9:AG13）。工作簿里还有一些相关的空白字段会影响这份汇总，因此周围的球员和排名信息应先补齐后，Club 列才能最终确认。请将完成后的工作簿保存为 .xlsx 文件。",
+  "quality_notes": "The prompt is minimal and context-based, identifies the target sheet and range, mentions the natural prerequisite relationship without explaining operations, and avoids formulas or answer values.",
+  "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": 55.0,
+  "attempt": 2
+}
\ No newline at end of file
diff --git a/FormulaCascade_Benchmark_eval_200/T3_MEDIUM/internal/FCB-04181/release_qc.json b/FormulaCascade_Benchmark_eval_200/T3_MEDIUM/internal/FCB-04181/release_qc.json
new file mode 100644
index 0000000000000000000000000000000000000000..66c1b5798048c9b94671aa46f32f6ac394cb84f8
--- /dev/null
+++ b/FormulaCascade_Benchmark_eval_200/T3_MEDIUM/internal/FCB-04181/release_qc.json
@@ -0,0 +1,58 @@
+{
+  "binary": true,
+  "binary_reason": "CORRECT: the masked cells are real and cleanly bounded, with visible cross-sheet and lookup patterns sufficient to reconstruct the two-layer chain.",
+  "D1": {
+    "score": 4,
+    "reason": "All 10 contract cells are truly masked, there are no phantom cells, no extra masked cells, and the diff summary is clean aside from formula-cache artifacts. There is substantial visible same-pattern evidence in nearby rows and analogous blocks, making the task relatively easy, but not pure zero-reasoning leakage because the solver still must connect the summary Club blanks to the Alif sheet and reconstruct the prerequisite Club lookups."
+  },
+  "D2": {
+    "score": 5,
+    "reason": "The layer-1 ground-truth formulas correctly reference the corresponding prerequisite cells on 'Team of the Year 23-24 (Alif)'!N37:N41. The formulas are deterministic direct references, and the cached values are consistent with those referenced cells as shown in src context."
+  },
+  "D3": {
+    "score": 4,
+    "reason": "The NL clearly identifies the target sheet, column, and range AG9:AG13, and explains that related blank fields feed the summary. It is slightly underspecified because it does not name the 'Team of the Year 23-24 (Alif)' sheet or explicitly mention lookup behavior, but the requested cells are unambiguous."
+  },
+  "D4": {
+    "score": 5,
+    "reason": "From mask_last.xlsx and the NL alone, the chain is reconstructible. The Summary sheet shows AG as the Club column adjacent to AF Player, and surrounding formulas visibly reference the Alif sheet. Rows 19:23 provide an analogous visible summary pattern for another contributor, showing that AG links to the source sheet's N37:N41. On the Alif sheet, N is labeled Club next to M player values, and nearby visible formulas show the VLOOKUP(player, named_range, 2, FALSE) pattern for deriving clubs. Thus both the prerequisite N37:N41 formulas and the final AG9:AG13 references have visible structural evidence.",
+    "d4_type": "ok"
+  },
+  "D5": {
+    "score": 4,
+    "reason": "The source workbook appears structurally sound: formulas are consistent, references are within range, and no circular or broken references are indicated. Local headers such as Ranking, Player, and Club are meaningful. The anonymized placeholder values, including one cached club-like value shown as a person placeholder, are slightly odd but not enough to indicate corruption."
+  },
+  "D6": {
+    "score": 5,
+    "reason": "The NL reads like a natural workplace spreadsheet completion request, identifies the relevant workbook context, and avoids benchmark-specific jargon."
+  },
+  "total": 27,
+  "verdict": "RELEASE",
+  "verdict_reason": "High-quality task with clean masking, correct deterministic ground truth, and sufficient visible evidence for a solver to reconstruct the cross-sheet dependency chain. Minor NL underspecification and easy visible exemplars do not undermine validity.",
+  "frontier_hardness": {
+    "score": 2,
+    "reason": "A frontier model would likely succeed. The task is cross-sheet and two-layer, but the summary reference pattern and the source-sheet VLOOKUP-to-club pattern are both highly visible from nearby exemplars.",
+    "fail_reason": "easy",
+    "is_valid_hardness": false
+  },
+  "_prompt_chars": 26826,
+  "_timing_load_workbooks": 4.31,
+  "_timing_context": 0.39,
+  "_timing_api": 31.19,
+  "local_difficulty": {
+    "difficulty_score": 40.5,
+    "difficulty": "medium",
+    "depth": 2,
+    "total_masked": 10,
+    "is_cross_sheet": true,
+    "unique_patterns": 2,
+    "avg_complexity": 3,
+    "cross_refs": 5,
+    "visible_exemplar_ratio": 0.861
+  },
+  "task_id": "cross_sheet__dag_4706957570b3",
+  "elapsed": 35.9,
+  "publish_decision": "YES",
+  "release_tier": "GOLD",
+  "hard_block_reasons": []
+}
\ No newline at end of file
diff --git a/FormulaCascade_Benchmark_eval_200/T3_MEDIUM/internal/FCB-04181/src.xlsx b/FormulaCascade_Benchmark_eval_200/T3_MEDIUM/internal/FCB-04181/src.xlsx
new file mode 100644
index 0000000000000000000000000000000000000000..7d920d8ef7325a5f439d08e0aef41250864fe4e6
Binary files /dev/null and b/FormulaCascade_Benchmark_eval_200/T3_MEDIUM/internal/FCB-04181/src.xlsx differ
diff --git a/FormulaCascade_Benchmark_eval_200/T3_MEDIUM/internal/FCB-04181/target_contract.json b/FormulaCascade_Benchmark_eval_200/T3_MEDIUM/internal/FCB-04181/target_contract.json
new file mode 100644
index 0000000000000000000000000000000000000000..15dbaad93610100cc70bd80acc43e6df4b50bd4c
--- /dev/null
+++ b/FormulaCascade_Benchmark_eval_200/T3_MEDIUM/internal/FCB-04181/target_contract.json
@@ -0,0 +1,60 @@
+{
+  "task_id": "cross_sheet__dag_4706957570b3",
+  "category": "cross_sheet",
+  "depth": 2,
+  "final_target": {
+    "regions": [
+      {
+        "sheet": "Summary TOTY 23-24",
+        "column": "AG",
+        "column_header": "Club",
+        "cell_range": "AG9:AG13",
+        "cell_count": 5,
+        "rows": [
+          9,
+          10,
+          11,
+          12,
+          13
+        ],
+        "first_row_label": "",
+        "last_row_label": ""
+      }
+    ],
+    "cell_count": 5,
+    "formula_families": [
+      "conditional"
+    ]
+  },
+  "prerequisite_steps": [
+    {
+      "layer": 2,
+      "regions": [
+        {
+          "sheet": "Team of the Year 23-24 (Alif)",
+          "column": "N",
+          "column_header": "Club",
+          "cell_range": "N37:N41",
+          "cell_count": 5,
+          "rows": [
+            37,
+            38,
+            39,
+            40,
+            41
+          ],
+          "first_row_label": "",
+          "last_row_label": ""
+        }
+      ],
+      "cell_count": 5
+    }
+  ],
+  "total_prerequisite_cells": 5,
+  "total_masked_cells": 10,
+  "ratio_total_vs_final": 2.0,
+  "sheets_involved": [
+    "Summary TOTY 23-24",
+    "Team of the Year 23-24 (Alif)"
+  ]
+}
\ No newline at end of file
diff --git a/FormulaCascade_Benchmark_eval_200/T3_MEDIUM/internal/FCB-04181/task_meta.json b/FormulaCascade_Benchmark_eval_200/T3_MEDIUM/internal/FCB-04181/task_meta.json
new file mode 100644
index 0000000000000000000000000000000000000000..7612419c98d8697488efc7e31b8390bc40041a28
--- /dev/null
+++ b/FormulaCascade_Benchmark_eval_200/T3_MEDIUM/internal/FCB-04181/task_meta.json
@@ -0,0 +1,310 @@
+{
+  "fcb_id": "FCB-04181",
+  "task_id": "cross_sheet__dag_4706957570b3",
+  "tier": "T3_MEDIUM",
+  "category": "cross_sheet",
+  "depth": 2,
+  "total_masked": 10,
+  "is_cross_sheet": true,
+  "prompt_en": "The \"Summary TOTY 23-24\" sheet is a Team of the Year 2023 - 2024 ranking summary, with position labels such as GK, RB, and RCB alongside Player and Club information. Please fill in the blank Club entries in column AG for rows 9 through 13 on \"Summary TOTY 23-24\" (AG9:AG13). Some related blank fields in the workbook feed into this summary, so those surrounding player and ranking details should be in place before the Club column is finalized. Save the completed workbook as an .xlsx file.",
+  "prompt_cn": "“Summary TOTY 23-24”工作表是一份 Team of the Year 2023 - 2024 的排名汇总，里面有 GK、RB、RCB 等位置标签，以及 Player 和 Club 等信息。请填写“Summary TOTY 23-24”中 AG 列第 9 到第 13 行的空白 Club 项（AG9:AG13）。工作簿里还有一些相关的空白字段会影响这份汇总，因此周围的球员和排名信息应先补齐后，Club 列才能最终确认。请将完成后的工作簿保存为 .xlsx 文件。",
+  "qc": {
+    "total": 27,
+    "verdict": "RELEASE",
+    "D1": 4,
+    "D2": 5,
+    "D3": 4,
+    "D4": 5,
+    "D5": 4,
+    "D6": 5,
+    "frontier_hardness": 2,
+    "local_difficulty": 40.5
+  },
+  "source_file_id": "870420d1716934060-barclays-premier-league-best-11-for-2024-toty-23-24-premier-league-alif",
+  "inferred_domain": "data_analysis",
+  "domain_confidence": 0.5,
+  "sheet_profiles": [
+    {
+      "name": "Summary TOTY 23-24",
+      "used_range": "B7:AS72",
+      "row_count": 66,
+      "col_count": 44,
+      "has_header": false,
+      "title_hint": "Summary TOTY 23 24",
+      "header_info": null
+    },
+    {
+      "name": "Team of the Year 23-24 (Alif)",
+      "used_range": "C2:Q93",
+      "row_count": 92,
+      "col_count": 15,
+      "has_header": false,
+      "title_hint": "Team of the Year 23 24 (Alif)",
+      "header_info": null
+    },
+    {
+      "name": "Team of the Year 23-24 (Tarik)",
+      "used_range": "C2:Q93",
+      "row_count": 92,
+      "col_count": 15,
+      "has_header": false,
+      "title_hint": "Team of the Year 23 24 (Tarik)",
+      "header_info": null
+    },
+    {
+      "name": "Team of the Year 23-24 (Raj)",
+      "used_range": "C2:Q93",
+      "row_count": 92,
+      "col_count": 15,
+      "has_header": false,
+      "title_hint": "Team of the Year 23 24 (Raj)",
+      "header_info": null
+    },
+    {
+      "name": "Team of the Year 23-24 (Salah)",
+      "used_range": "C2:Q93",
+      "row_count": 92,
+      "col_count": 15,
+      "has_header": false,
+      "title_hint": "Team of the Year 23 24 (Salah)",
+      "header_info": null
+    },
+    {
+      "name": "Team of the Year 23-24 (Chaps)",
+      "used_range": "C2:Q93",
+      "row_count": 92,
+      "col_count": 15,
+      "has_header": false,
+      "title_hint": "Team of the Year 23 24 (Chaps)",
+      "header_info": null
+    },
+    {
+      "name": "Team of the Year 23-24 (Josh)",
+      "used_range": "C2:Q93",
+      "row_count": 92,
+      "col_count": 15,
+      "has_header": false,
+      "title_hint": "Team of the Year 23 24 (Josh)",
+      "header_info": null
+    },
+    {
+      "name": "Full Master List of Players",
+      "used_range": "B2:AB162",
+      "row_count": 161,
+      "col_count": 27,
+      "has_header": true,
+      "title_hint": "Full Master List of Players",
+      "header_info": {
+        "sheet": "Full Master List of Players",
+        "header_row": 2,
+        "headers": {
+          "C": "GK",
+          "D": "Club",
+          "G": "CB",
+          "H": "Club",
+          "K": "LB",
+          "L": "Club",
+          "O": "RB",
+          "P": "Club",
+          "S": "CM",
+          "T": "Club",
+          "W": "Winger",
+          "X": "Club",
+          "AA": "Striker",
+          "AB": "Club"
+        }
+      }
+    },
+    {
+      "name": "Full Player List",
+      "used_range": "D8:F478",
+      "row_count": 471,
+      "col_count": 3,
+      "has_header": true,
+      "title_hint": "Full Player List",
+      "header_info": {
+        "sheet": "Full Player List",
+        "header_row": 8,
+        "headers": {
+          "E": "Player",
+          "F": "Club"
+        }
+      }
+    },
+    {
+      "name": "Sheet10",
+      "used_range": "E5:G119",
+      "row_count": 115,
+      "col_count": 3,
+      "has_header": true,
+      "title_hint": "Sheet10",
+      "header_info": {
+        "sheet": "Sheet10",
+        "header_row": 5,
+        "headers": {
+          "E": "#",
+          "F": "Player",
+          "G": "Club"
+        }
+      }
+    },
+    {
+      "name": "Sheet8",
+      "used_range": "E5:G153",
+      "row_count": 149,
+      "col_count": 3,
+      "has_header": true,
+      "title_hint": "Sheet8",
+      "header_info": {
+        "sheet": "Sheet8",
+        "header_row": 5,
+        "headers": {
+          "E": "#",
+          "F": "Player",
+          "G": "Club"
+        }
+      }
+    },
+    {
+      "name": "Sheet9",
+      "used_range": "F7:H35",
+      "row_count": 29,
+      "col_count": 3,
+      "has_header": true,
+      "title_hint": "Sheet9",
+      "header_info": {
+        "sheet": "Sheet9",
+        "header_row": 7,
+        "headers": {
+          "F": "#",
+          "G": "Player",
+          "H": "Club"
+        }
+      }
+    },
+    {
+      "name": "Sheet7",
+      "used_range": "C4:E74",
+      "row_count": 71,
+      "col_count": 3,
+      "has_header": true,
+      "title_hint": "Sheet7",
+      "header_info": {
+        "sheet": "Sheet7",
+        "header_row": 4,
+        "headers": {
+          "C": "#",
+          "D": "Player",
+          "E": "Club"
+        }
+      }
+    },
+    {
+      "name": "Sheet1",
+      "used_range": "B5:H55",
+      "row_count": 51,
+      "col_count": 7,
+      "has_header": true,
+      "title_hint": "Sheet1",
+      "header_info": {
+        "sheet": "Sheet1",
+        "header_row": 5,
+        "headers": {
+          "B": "#",
+          "C": "Player",
+          "E": "Nat.",
+          "F": "Age",
+          "G": "Club",
+          "H": "Market value"
+        }
+      }
+    },
+    {
+      "name": "Sheet3",
+      "used_range": "C5:E211",
+      "row_count": 207,
+      "col_count": 3,
+      "has_header": true,
+      "title_hint": "Sheet3",
+      "header_info": {
+        "sheet": "Sheet3",
+        "header_row": 5,
+        "headers": {
+          "C": "#",
+          "D": "Player",
+          "E": "Club"
+        }
+      }
+    },
+    {
+      "name": "Sheet4",
+      "used_range": "C5:F195",
+      "row_count": 191,
+      "col_count": 4,
+      "has_header": true,
+      "title_hint": "Sheet4",
+      "header_info": {
+        "sheet": "Sheet4",
+        "header_row": 5,
+        "headers": {
+          "C": "#",
+          "D": "Player",
+          "E": "Club"
+        }
+      }
+    },
+    {
+      "name": "Sheet5",
+      "used_range": "C4:K96",
+      "row_count": 93,
+      "col_count": 9,
+      "has_header": true,
+      "title_hint": "Sheet5",
+      "header_info": {
+        "sheet": "Sheet5",
+        "header_row": 4,
+        "headers": {
+          "C": "#",
+          "D": "Player",
+          "F": "Nat.",
+          "G": "Age",
+          "H": "Club",
+          "I": "Highest value in career",
+          "J": "Last update",
+          "K": "Market value"
+        }
+      }
+    },
+    {
+      "name": "Sheet6",
+      "used_range": "C4:Z145",
+      "row_count": 142,
+      "col_count": 24,
+      "has_header": true,
+      "title_hint": "Sheet6",
+      "header_info": {
+        "sheet": "Sheet6",
+        "header_row": 4,
+        "headers": {
+          "C": "#",
+          "D": "Player",
+          "F": "Nat.",
+          "G": "Age",
+          "H": "Club",
+          "I": "Highest value in career",
+          "J": "Last update",
+          "K": "Market value",
+          "O": "#",
+          "P": "Player",
+          "Q": "Club",
+          "S": "#",
+          "T": "Player",
+          "U": "Club",
+          "X": "#",
+          "Y": "Player",
+          "Z": "Club"
+        }
+      }
+    }
+  ]
+}
\ No newline at end of file
diff --git a/FormulaCascade_Benchmark_eval_200/T3_MEDIUM/internal/FCB-04188/audit.json b/FormulaCascade_Benchmark_eval_200/T3_MEDIUM/internal/FCB-04188/audit.json
new file mode 100644
index 0000000000000000000000000000000000000000..14865421595a8aee799a07acb03a280a1907606d
--- /dev/null
+++ b/FormulaCascade_Benchmark_eval_200/T3_MEDIUM/internal/FCB-04188/audit.json
@@ -0,0 +1,417 @@
+{
+  "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=406602B, src=491981B"
+        },
+        {
+          "check": "dirty_family",
+          "pass": true,
+          "detail": "0 dirty cells"
+        },
+        {
+          "check": "ratio_gate",
+          "pass": true,
+          "detail": "ratio=3.2 (total=19, final=6)"
+        },
+        {
+          "check": "dedup_gate",
+          "pass": true,
+          "detail": "0 duplicate cells across layers"
+        },
+        {
+          "check": "gt_uniqueness",
+          "pass": true,
+          "detail": "6 unique values across 19 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: EAST-EGM-GL!I→H(7/13)"
+        },
+        {
+          "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": true,
+          "detail": "contract=12, prompt=6, 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=1, no explicit steps found (v5 natural format)",
+          "severity": "OK"
+        },
+        {
+          "check": "sheet_name_match",
+          "pass": true,
+          "detail": "contract=['EAST-EGM-GL'], 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": false,
+          "detail": "issues: use the visible",
+          "severity": "SOFT_WARN"
+        },
+        {
+          "check": "evidence_scope",
+          "pass": true,
+          "detail": "referenced=1 mentioned=1 missing=0",
+          "severity": "OK"
+        },
+        {
+          "check": "exemplar_consistency",
+          "pass": true,
+          "severity": "OK",
+          "detail": "checked 1 col groups; CONFLICTS: EAST-EGM-GL!H43: visible='=H42+H39' vs GT pattern='=SUM(H#:H#)'; EAST-EGM-GL!H82: visible='=H16+H24+H29+H36+H43+H45+H47+H' vs GT pattern='=SUM(H#: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 19 GT cells (0%)",
+          "severity": "OK"
+        }
+      ]
+    },
+    "pre_nl_local": {
+      "local_total": 60,
+      "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": 10,
+        "nl_schema": 0,
+        "target_alignment": 0,
+        "business_specificity": 0,
+        "nl_risk": 0
+      }
+    }
+  },
+  "verify": {
+    "uniqueness": {
+      "total_gt_cells": 19,
+      "total_non_none": 19,
+      "block_reasons": [],
+      "warnings": [],
+      "checks": {
+        "rank_tie_risk": {
+          "rank_cells": 0,
+          "tie_issues": 0,
+          "details": []
+        },
+        "trivial_gt": {
+          "issues": []
+        },
+        "gt_type_consistency": {
+          "types": {
+            "int": 19
+          },
+          "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": 19
+      }
+    },
+    "solver_visibility": {
+      "contract_cells": 19,
+      "total_masked": 19,
+      "total_visible": 10555,
+      "depth": 2,
+      "block_reasons": [],
+      "warnings": [],
+      "checks": {
+        "broken_chains": {
+          "count": 0,
+          "checked": 19,
+          "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": 58,
+          "zero_exemplar_count": 0,
+          "low_exemplar_count": 0
+        },
+        "zero_exemplar_patterns": {
+          "pass": true,
+          "patterns": []
+        },
+        "low_exemplar_patterns": {
+          "pass": true,
+          "patterns": []
+        },
+        "func_coverage": {
+          "arithmetic": {
+            "total_masked": 13,
+            "visible_exemplars": 8202
+          },
+          "SUM": {
+            "total_masked": 6,
+            "visible_exemplars": 3740
+          }
+        }
+      }
+    },
+    "shortcut": {
+      "shortcut_risk": 1.0,
+      "flags": [
+        {
+          "code": "SC3",
+          "description": "Copy-from-visible: 10/19 GT cells have nearby visible formula clones",
+          "affected_cells": 10,
+          "severity": "high"
+        }
+      ]
+    },
+    "release_audit": {
+      "surface_single_sheet": true,
+      "surface_sheets": [
+        "EAST-EGM-GL"
+      ],
+      "cross_sheet_actual": true,
+      "cross_sheet_ref_count": 13,
+      "referenced_sheets": [
+        "Actuals"
+      ],
+      "target_shape": "template_column_fill",
+      "layer_sizes": [
+        6,
+        13
+      ],
+      "mask_last_total_cells": 19,
+      "layer_growth_ratios": [
+        2.1667
+      ],
+      "pattern_dominance_ratio": 0.3158,
+      "visible_clone_regions": 198,
+      "nearby_visible_clone_regions": 48,
+      "nearby_visible_clone_rows": 104,
+      "nearby_visible_clone_ratio": 8.0,
+      "promptability_score": 0.52,
+      "release_reasons": [
+        "parallel_block_leakage",
+        "cross_sheet_metadata_mismatch"
+      ],
+      "release_verdict": "REBUILD_REQUIRED"
+    }
+  },
+  "difficulty": {
+    "task_id": "cross_sheet__dag_4dca7fdb4028",
+    "difficulty_score": 48.8,
+    "difficulty": "medium",
+    "depth": 2,
+    "total_masked": 19,
+    "is_cross_sheet": true,
+    "unique_patterns": 2,
+    "avg_complexity": 4.0,
+    "cross_refs": 13,
+    "visible_exemplar_ratio": 0.867,
+    "score_breakdown": {
+      "depth": 7,
+      "cross_sheet": 10,
+      "cell_count": 8.5,
+      "patterns": 6,
+      "complexity": 6.0,
+      "cross_refs": 10,
+      "vis_penalty": 1.3
+    }
+  }
+}
\ No newline at end of file
diff --git a/FormulaCascade_Benchmark_eval_200/T3_MEDIUM/internal/FCB-04188/ground_truth_full.json b/FormulaCascade_Benchmark_eval_200/T3_MEDIUM/internal/FCB-04188/ground_truth_full.json
new file mode 100644
index 0000000000000000000000000000000000000000..783d5856e169bbf05c6ee7c36f8066eee219de7c
--- /dev/null
+++ b/FormulaCascade_Benchmark_eval_200/T3_MEDIUM/internal/FCB-04188/ground_truth_full.json
@@ -0,0 +1,173 @@
+[
+  {
+    "sheet": "EAST-EGM-GL",
+    "col": "H",
+    "row": 29,
+    "formula": "=SUM(H27:H28)",
+    "cached_value": 4814120,
+    "pattern_id": "pf_0000",
+    "layer": 1
+  },
+  {
+    "sheet": "EAST-EGM-GL",
+    "col": "H",
+    "row": 42,
+    "formula": "=SUM(H40:H41)",
+    "cached_value": -1536713,
+    "pattern_id": "pf_0000",
+    "layer": 1
+  },
+  {
+    "sheet": "EAST-EGM-GL",
+    "col": "H",
+    "row": 56,
+    "formula": "=SUM(H54:H55)",
+    "cached_value": -146582734,
+    "pattern_id": "pf_0000",
+    "layer": 1
+  },
+  {
+    "sheet": "EAST-EGM-GL",
+    "col": "H",
+    "row": 61,
+    "formula": "=SUM(H59:H60)",
+    "cached_value": 0,
+    "pattern_id": "pf_0000",
+    "layer": 1
+  },
+  {
+    "sheet": "EAST-EGM-GL",
+    "col": "H",
+    "row": 66,
+    "formula": "=SUM(H64:H65)",
+    "cached_value": 0,
+    "pattern_id": "pf_0000",
+    "layer": 1
+  },
+  {
+    "sheet": "EAST-EGM-GL",
+    "col": "H",
+    "row": 72,
+    "formula": "=SUM(H70:H71)",
+    "cached_value": 0,
+    "pattern_id": "pf_0000",
+    "layer": 1
+  },
+  {
+    "sheet": "EAST-EGM-GL",
+    "col": "H",
+    "row": 39,
+    "formula": "=+Actuals!E260",
+    "cached_value": 0,
+    "pattern_id": "pf_0029",
+    "layer": 2
+  },
+  {
+    "sheet": "EAST-EGM-GL",
+    "col": "H",
+    "row": 40,
+    "formula": "=+Actuals!E261",
+    "cached_value": -1536713,
+    "pattern_id": "pf_0029",
+    "layer": 2
+  },
+  {
+    "sheet": "EAST-EGM-GL",
+    "col": "H",
+    "row": 41,
+    "formula": "=+Actuals!E262",
+    "cached_value": 0,
+    "pattern_id": "pf_0029",
+    "layer": 2
+  },
+  {
+    "sheet": "EAST-EGM-GL",
+    "col": "H",
+    "row": 27,
+    "formula": "=+Actuals!E254",
+    "cached_value": 12974502,
+    "pattern_id": "pf_0045",
+    "layer": 2
+  },
+  {
+    "sheet": "EAST-EGM-GL",
+    "col": "H",
+    "row": 28,
+    "formula": "=+Actuals!E255",
+    "cached_value": -8160382,
+    "pattern_id": "pf_0045",
+    "layer": 2
+  },
+  {
+    "sheet": "EAST-EGM-GL",
+    "col": "H",
+    "row": 54,
+    "formula": "=+Actuals!E267",
+    "cached_value": -146582734,
+    "pattern_id": "pf_0046",
+    "layer": 2
+  },
+  {
+    "sheet": "EAST-EGM-GL",
+    "col": "H",
+    "row": 55,
+    "formula": "=+Actuals!E268",
+    "cached_value": 0,
+    "pattern_id": "pf_0046",
+    "layer": 2
+  },
+  {
+    "sheet": "EAST-EGM-GL",
+    "col": "H",
+    "row": 59,
+    "formula": "=+Actuals!E269",
+    "cached_value": 0,
+    "pattern_id": "pf_0047",
+    "layer": 2
+  },
+  {
+    "sheet": "EAST-EGM-GL",
+    "col": "H",
+    "row": 60,
+    "formula": "=+Actuals!E270",
+    "cached_value": 0,
+    "pattern_id": "pf_0047",
+    "layer": 2
+  },
+  {
+    "sheet": "EAST-EGM-GL",
+    "col": "H",
+    "row": 64,
+    "formula": "=+Actuals!E271",
+    "cached_value": 0,
+    "pattern_id": "pf_0048",
+    "layer": 2
+  },
+  {
+    "sheet": "EAST-EGM-GL",
+    "col": "H",
+    "row": 65,
+    "formula": "=+Actuals!E272",
+    "cached_value": 0,
+    "pattern_id": "pf_0048",
+    "layer": 2
+  },
+  {
+    "sheet": "EAST-EGM-GL",
+    "col": "H",
+    "row": 70,
+    "formula": "=+Actuals!E273",
+    "cached_value": 0,
+    "pattern_id": "pf_0049",
+    "layer": 2
+  },
+  {
+    "sheet": "EAST-EGM-GL",
+    "col": "H",
+    "row": 71,
+    "formula": "=+Actuals!E274",
+    "cached_value": 0,
+    "pattern_id": "pf_0049",
+    "layer": 2
+  }
+]
\ No newline at end of file
diff --git a/FormulaCascade_Benchmark_eval_200/T3_MEDIUM/internal/FCB-04188/ground_truth_target.json b/FormulaCascade_Benchmark_eval_200/T3_MEDIUM/internal/FCB-04188/ground_truth_target.json
new file mode 100644
index 0000000000000000000000000000000000000000..5ee32c07e646ee2226da404034fbd882d41967de
--- /dev/null
+++ b/FormulaCascade_Benchmark_eval_200/T3_MEDIUM/internal/FCB-04188/ground_truth_target.json
@@ -0,0 +1,50 @@
+[
+  {
+    "sheet": "EAST-EGM-GL",
+    "col": "H",
+    "row": 29,
+    "formula": "=SUM(H27:H28)",
+    "cached_value": 4814120,
+    "pattern_id": "pf_0000"
+  },
+  {
+    "sheet": "EAST-EGM-GL",
+    "col": "H",
+    "row": 42,
+    "formula": "=SUM(H40:H41)",
+    "cached_value": -1536713,
+    "pattern_id": "pf_0000"
+  },
+  {
+    "sheet": "EAST-EGM-GL",
+    "col": "H",
+    "row": 56,
+    "formula": "=SUM(H54:H55)",
+    "cached_value": -146582734,
+    "pattern_id": "pf_0000"
+  },
+  {
+    "sheet": "EAST-EGM-GL",
+    "col": "H",
+    "row": 61,
+    "formula": "=SUM(H59:H60)",
+    "cached_value": 0,
+    "pattern_id": "pf_0000"
+  },
+  {
+    "sheet": "EAST-EGM-GL",
+    "col": "H",
+    "row": 66,
+    "formula": "=SUM(H64:H65)",
+    "cached_value": 0,
+    "pattern_id": "pf_0000"
+  },
+  {
+    "sheet": "EAST-EGM-GL",
+    "col": "H",
+    "row": 72,
+    "formula": "=SUM(H70:H71)",
+    "cached_value": 0,
+    "pattern_id": "pf_0000"
+  }
+]
\ No newline at end of file
diff --git a/FormulaCascade_Benchmark_eval_200/T3_MEDIUM/internal/FCB-04188/layers.json b/FormulaCascade_Benchmark_eval_200/T3_MEDIUM/internal/FCB-04188/layers.json
new file mode 100644
index 0000000000000000000000000000000000000000..b9f38de3cb4a03c75bc30f64113149700a0ab0b1
--- /dev/null
+++ b/FormulaCascade_Benchmark_eval_200/T3_MEDIUM/internal/FCB-04188/layers.json
@@ -0,0 +1,159 @@
+{
+  "dag_id": "dag_4dca7fdb4028",
+  "file_id": "phillip_m_love__30669__200002_OA",
+  "category": "cross_sheet",
+  "surface_category": "single_sheet",
+  "effective_category": "cross_sheet",
+  "depth": 2,
+  "quality": {
+    "chain_error_cells": 0,
+    "chain_external_cells": 0,
+    "is_clean": true
+  },
+  "layers": [
+    {
+      "layer_index": 1,
+      "new_pattern_groups": [
+        {
+          "region_ids": [
+            "rg_00852",
+            "rg_00853",
+            "rg_00854",
+            "rg_00855",
+            "rg_00856",
+            "rg_00857"
+          ],
+          "sheet": "EAST-EGM-GL",
+          "col": "H",
+          "rows": [
+            29,
+            42,
+            56,
+            61,
+            66,
+            72
+          ],
+          "row_ranges": "29,42,56,61,66,72",
+          "row_count": 6,
+          "pattern_id": "pf_0000",
+          "normalized_pattern": "=SUM([C,R-2]:[C,R-1])",
+          "sample_formula": "=SUM(H27:H28)"
+        }
+      ],
+      "new_eval_cells": 6,
+      "total_masked_cells": 6
+    },
+    {
+      "layer_index": 2,
+      "new_pattern_groups": [
+        {
+          "region_ids": [
+            "rg_04987"
+          ],
+          "sheet": "EAST-EGM-GL",
+          "col": "H",
+          "rows": [
+            39,
+            40,
+            41
+          ],
+          "row_ranges": "39-41",
+          "row_count": 3,
+          "pattern_id": "pf_0029",
+          "normalized_pattern": "=+ACTUALS![C-3,R+221]",
+          "sample_formula": "=+Actuals!E260"
+        },
+        {
+          "region_ids": [
+            "rg_05489"
+          ],
+          "sheet": "EAST-EGM-GL",
+          "col": "H",
+          "rows": [
+            27,
+            28
+          ],
+          "row_ranges": "27-28",
+          "row_count": 2,
+          "pattern_id": "pf_0045",
+          "normalized_pattern": "=+ACTUALS![C-3,R+227]",
+          "sample_formula": "=+Actuals!E254"
+        },
+        {
+          "region_ids": [
+            "rg_05523"
+          ],
+          "sheet": "EAST-EGM-GL",
+          "col": "H",
+          "rows": [
+            54,
+            55
+          ],
+          "row_ranges": "54-55",
+          "row_count": 2,
+          "pattern_id": "pf_0046",
+          "normalized_pattern": "=+ACTUALS![C-3,R+213]",
+          "sample_formula": "=+Actuals!E267"
+        },
+        {
+          "region_ids": [
+            "rg_05557"
+          ],
+          "sheet": "EAST-EGM-GL",
+          "col": "H",
+          "rows": [
+            59,
+            60
+          ],
+          "row_ranges": "59-60",
+          "row_count": 2,
+          "pattern_id": "pf_0047",
+          "normalized_pattern": "=+ACTUALS![C-3,R+210]",
+          "sample_formula": "=+Actuals!E269"
+        },
+        {
+          "region_ids": [
+            "rg_05591"
+          ],
+          "sheet": "EAST-EGM-GL",
+          "col": "H",
+          "rows": [
+            64,
+            65
+          ],
+          "row_ranges": "64-65",
+          "row_count": 2,
+          "pattern_id": "pf_0048",
+          "normalized_pattern": "=+ACTUALS![C-3,R+207]",
+          "sample_formula": "=+Actuals!E271"
+        },
+        {
+          "region_ids": [
+            "rg_05625"
+          ],
+          "sheet": "EAST-EGM-GL",
+          "col": "H",
+          "rows": [
+            70,
+            71
+          ],
+          "row_ranges": "70-71",
+          "row_count": 2,
+          "pattern_id": "pf_0049",
+          "normalized_pattern": "=+ACTUALS![C-3,R+203]",
+          "sample_formula": "=+Actuals!E273"
+        }
+      ],
+      "new_eval_cells": 13,
+      "total_masked_cells": 19
+    }
+  ],
+  "sink": {
+    "region_id": "rg_00854",
+    "sheet": "EAST-EGM-GL",
+    "col": "H",
+    "pattern_id": "pf_0000",
+    "row_count": 1,
+    "family_size": 6
+  }
+}
\ No newline at end of file
diff --git a/FormulaCascade_Benchmark_eval_200/T3_MEDIUM/internal/FCB-04188/nl_task.json b/FormulaCascade_Benchmark_eval_200/T3_MEDIUM/internal/FCB-04188/nl_task.json
new file mode 100644
index 0000000000000000000000000000000000000000..92b31135409c3db34b7f0e9b067e4385e2f99ac1
--- /dev/null
+++ b/FormulaCascade_Benchmark_eval_200/T3_MEDIUM/internal/FCB-04188/nl_task.json
@@ -0,0 +1,26 @@
+{
+  "task_id": "cross_sheet__dag_4dca7fdb4028",
+  "prompt_en": "The EAST-EGM-GL sheet is part of the ENRON CAPITAL & TRADE RESOURCES operational analysis workbook, with reported Sales and Actuals lines tied to the other operational analysis tabs like RECLASSES and TIE-OUT SCHEDULE. The Option Premiums column on that sheet is not fully filled in for several sales lines.\n\nPlease complete the missing Option Premiums entries in column H of \"EAST-EGM-GL\", specifically H29, H42, H56, H61, H66, and H72. The related monthly and regional figures elsewhere in the workbook need to be in place for these reported sales entries to make sense, so use the visible workbook context across the sheets as needed.\n\nWhen you’re done, save the completed file as an .xlsx.",
+  "prompt_cn": "“EAST-EGM-GL” 工作表是 ENRON CAPITAL & TRADE RESOURCES 运营分析工作簿的一部分，其中的 Sales 和 Actuals 记录与 RECLASSES、TIE-OUT SCHEDULE 等其他运营分析工作表相关。这个工作表里的 Option Premiums 列有几处销售记录还没有填好。\n\n请补全 “EAST-EGM-GL” 工作表 H 列 Option Premiums 中缺失的项目，具体位置是 H29、H42、H56、H61、H66 和 H72。工作簿中其他位置的月度和区域数字需要完整，这些已报告的销售记录才会连贯；请根据各工作表中可见的内容填写。\n\n完成后，请将文件保存为 .xlsx 格式。",
+  "quality_notes": "Minimal-mode prompt with concrete workbook labels, target sheet/column and cell locations included, and no procedural hints or 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": 0
+  },
+  "version": "v7",
+  "model": "gpt-5.5",
+  "elapsed": 21.3,
+  "attempt": 1
+}
\ No newline at end of file
diff --git a/FormulaCascade_Benchmark_eval_200/T3_MEDIUM/internal/FCB-04188/release_qc.json b/FormulaCascade_Benchmark_eval_200/T3_MEDIUM/internal/FCB-04188/release_qc.json
new file mode 100644
index 0000000000000000000000000000000000000000..c0d85d32c170b27ddb4178b0ffce3270ab360438
--- /dev/null
+++ b/FormulaCascade_Benchmark_eval_200/T3_MEDIUM/internal/FCB-04188/release_qc.json
@@ -0,0 +1,57 @@
+{
+  "binary": true,
+  "binary_reason": "Well-designed overall: real in-range masked cells and visible structural evidence make the chain reconstructible, with only minor extra masking and slightly imprecise NL wording.",
+  "D1": {
+    "score": 4,
+    "reason": "All contract masked cells are real in-sheet cells and the prerequisite masking is appropriate for depth=2 chain masking. There is no phantom range. However, the mask boundary is not perfectly clean: RECLASS!A83 and TIE-OUT!A83 were also truly removed outside the contract. Visible same-pattern exemplars are abundant, but they support reconstruction rather than invalidating the task; the task is easy/template-like but not a phantom or broken mask."
+  },
+  "D2": {
+    "score": 5,
+    "reason": "The listed layer-1 formulas are consistent with the source workbook structure: H29 sums H27:H28, H42 sums H40:H41, H56 sums H54:H55, H61 sums H59:H60, H66 sums H64:H65, and H72 sums H70:H71. These are deterministic subtotal formulas and align with the cached values shown."
+  },
+  "D3": {
+    "score": 4,
+    "reason": "The prompt clearly identifies the sheet, column, and exact target cells H29, H42, H56, H61, H66, and H72. The wording around 'Option Premiums' is somewhat imprecise relative to the visible row labels/subtotal structure, and it does not explicitly mention filling prerequisite cells, but the requested final cells are unambiguous."
+  },
+  "D4": {
+    "score": 5,
+    "reason": "Using only mask_last.xlsx and the NL prompt, the task is solvable. The final subtotal pattern is visible in adjacent columns on the same rows, e.g. I29=SUM(I27:I28), I42=SUM(I40:I41), etc., and visible subtotal rows in column H such as H24 and H36 also show the same style. The prerequisite pattern is also visible throughout column H and neighboring columns: unmasked rows show Hxx=+Actuals!Exxx, while adjacent I/J/K formulas expose the row-to-Actuals mapping. Thus the solver can reconstruct H27:H28, H39:H41, H54:H55, H59:H60, H64:H65, and H70:H71, then compute the target subtotals.",
+    "d4_type": "ok"
+  },
+  "D5": {
+    "score": 5,
+    "reason": "The source workbook appears structurally sound for this task: formulas are coherent, references are within workbook sheets, headers/row labels are meaningful, and no corruption, circularity, or broken-reference issue is indicated in the provided source context."
+  },
+  "D6": {
+    "score": 4,
+    "reason": "The NL prompt sounds mostly like a workplace spreadsheet-completion request and avoids benchmark jargon. It is a bit generic and somewhat overstates cross-sheet/business context, but it remains natural enough."
+  },
+  "total": 27,
+  "verdict": "RELEASE",
+  "verdict_reason": "Publishable as-is. The task has clean reconstructible formula evidence and correct ground truth. Minor issues are the two irrelevant extra-masked cells and somewhat imprecise business wording, but neither prevents solving or evaluation.",
+  "frontier_hardness": {
+    "score": 2,
+    "reason": "This is a short depth-2 chain with only two simple formula patterns: direct Actuals references for prerequisites and SUM subtotals for targets. Visible exemplars in the same sheet and neighboring columns make the pattern clear, so a frontier model should likely succeed.",
+    "fail_reason": "easy",
+    "is_valid_hardness": false
+  },
+  "_prompt_chars": 80634,
+  "local_difficulty": {
+    "difficulty_score": 48.8,
+    "difficulty": "medium",
+    "depth": 2,
+    "total_masked": 19,
+    "is_cross_sheet": true,
+    "unique_patterns": 2,
+    "avg_complexity": 4,
+    "cross_refs": 13,
+    "visible_exemplar_ratio": 0.867
+  },
+  "_timing_context": 1267.4,
+  "_timing_api": 35.8,
+  "task_id": "cross_sheet__dag_4dca7fdb4028",
+  "elapsed": 1303.3,
+  "publish_decision": "YES",
+  "release_tier": "GOLD",
+  "hard_block_reasons": []
+}
\ No newline at end of file
diff --git a/FormulaCascade_Benchmark_eval_200/T3_MEDIUM/internal/FCB-04188/target_contract.json b/FormulaCascade_Benchmark_eval_200/T3_MEDIUM/internal/FCB-04188/target_contract.json
new file mode 100644
index 0000000000000000000000000000000000000000..994d5760f7b5f3bab323ba3e9fbf1b9bba97b1a0
--- /dev/null
+++ b/FormulaCascade_Benchmark_eval_200/T3_MEDIUM/internal/FCB-04188/target_contract.json
@@ -0,0 +1,68 @@
+{
+  "task_id": "cross_sheet__dag_4dca7fdb4028",
+  "category": "cross_sheet",
+  "depth": 2,
+  "final_target": {
+    "regions": [
+      {
+        "sheet": "EAST-EGM-GL",
+        "column": "H",
+        "column_header": "Option Premiums",
+        "cell_range": "H29, H42, H56, H61, H66, H72",
+        "cell_count": 6,
+        "rows": [
+          29,
+          42,
+          56,
+          61,
+          66,
+          72
+        ],
+        "first_row_label": "Total Intra CTS Sales / Purchases",
+        "last_row_label": "Total MTM Income"
+      }
+    ],
+    "cell_count": 6,
+    "formula_families": [
+      "aggregation"
+    ]
+  },
+  "prerequisite_steps": [
+    {
+      "layer": 2,
+      "regions": [
+        {
+          "sheet": "EAST-EGM-GL",
+          "column": "H",
+          "column_header": "Option Premiums",
+          "cell_range": "H27:H28, H39:H41, H54:H55, H59:H60, H64:H65, H70:H71",
+          "cell_count": 13,
+          "rows": [
+            27,
+            28,
+            39,
+            40,
+            41,
+            54,
+            55,
+            59,
+            60,
+            64,
+            65,
+            70,
+            71
+          ],
+          "first_row_label": "Sales",
+          "last_row_label": "Prior Month Book Balance"
+        }
+      ],
+      "cell_count": 13
+    }
+  ],
+  "total_prerequisite_cells": 13,
+  "total_masked_cells": 19,
+  "ratio_total_vs_final": 3.2,
+  "sheets_involved": [
+    "EAST-EGM-GL"
+  ]
+}
\ No newline at end of file
diff --git a/FormulaCascade_Benchmark_eval_200/T3_MEDIUM/internal/FCB-04188/task_meta.json b/FormulaCascade_Benchmark_eval_200/T3_MEDIUM/internal/FCB-04188/task_meta.json
new file mode 100644
index 0000000000000000000000000000000000000000..8aea3c4fbe948501b49cf39db0813c9eea40ac58
--- /dev/null
+++ b/FormulaCascade_Benchmark_eval_200/T3_MEDIUM/internal/FCB-04188/task_meta.json
@@ -0,0 +1,163 @@
+{
+  "fcb_id": "FCB-04188",
+  "task_id": "cross_sheet__dag_4dca7fdb4028",
+  "tier": "T3_MEDIUM",
+  "category": "cross_sheet",
+  "depth": 2,
+  "total_masked": 19,
+  "is_cross_sheet": true,
+  "prompt_en": "The EAST-EGM-GL sheet is part of the ENRON CAPITAL & TRADE RESOURCES operational analysis workbook, with reported Sales and Actuals lines tied to the other operational analysis tabs like RECLASSES and TIE-OUT SCHEDULE. The Option Premiums column on that sheet is not fully filled in for several sales lines.\n\nPlease complete the missing Option Premiums entries in column H of \"EAST-EGM-GL\", specifically H29, H42, H56, H61, H66, and H72. The related monthly and regional figures elsewhere in the workbook need to be in place for these reported sales entries to make sense, so use the visible workbook context across the sheets as needed.\n\nWhen you’re done, save the completed file as an .xlsx.",
+  "prompt_cn": "“EAST-EGM-GL” 工作表是 ENRON CAPITAL & TRADE RESOURCES 运营分析工作簿的一部分，其中的 Sales 和 Actuals 记录与 RECLASSES、TIE-OUT SCHEDULE 等其他运营分析工作表相关。这个工作表里的 Option Premiums 列有几处销售记录还没有填好。\n\n请补全 “EAST-EGM-GL” 工作表 H 列 Option Premiums 中缺失的项目，具体位置是 H29、H42、H56、H61、H66 和 H72。工作簿中其他位置的月度和区域数字需要完整，这些已报告的销售记录才会连贯；请根据各工作表中可见的内容填写。\n\n完成后，请将文件保存为 .xlsx 格式。",
+  "qc": {
+    "total": 27,
+    "verdict": "RELEASE",
+    "D1": 4,
+    "D2": 5,
+    "D3": 4,
+    "D4": 5,
+    "D5": 5,
+    "D6": 4,
+    "frontier_hardness": 2,
+    "local_difficulty": 48.8
+  },
+  "source_file_id": "phillip_m_love__30669__200002_OA",
+  "inferred_domain": "sales",
+  "domain_confidence": 0.75,
+  "sheet_profiles": [
+    {
+      "name": "Check",
+      "used_range": "A1:J88",
+      "row_count": 88,
+      "col_count": 10,
+      "has_header": false,
+      "title_hint": "Check",
+      "header_info": null
+    },
+    {
+      "name": "RECLASS",
+      "used_range": "A1:AH85",
+      "row_count": 85,
+      "col_count": 34,
+      "has_header": false,
+      "title_hint": "RECLASS",
+      "header_info": null
+    },
+    {
+      "name": "TIE-OUT",
+      "used_range": "A1:AH96",
+      "row_count": 96,
+      "col_count": 34,
+      "has_header": false,
+      "title_hint": "TIE OUT",
+      "header_info": null
+    },
+    {
+      "name": "ARUBA-FLSH",
+      "used_range": "A1:BO83",
+      "row_count": 83,
+      "col_count": 67,
+      "has_header": false,
+      "title_hint": "ARUBA FLSH",
+      "header_info": null
+    },
+    {
+      "name": "TX-EGM-FLSH",
+      "used_range": "A1:BO91",
+      "row_count": 91,
+      "col_count": 67,
+      "has_header": false,
+      "title_hint": "TX EGM FLSH",
+      "header_info": null
+    },
+    {
+      "name": "TX-HPLR-FLSH",
+      "used_range": "A1:BO83",
+      "row_count": 83,
+      "col_count": 67,
+      "has_header": false,
+      "title_hint": "TX HPLR FLSH",
+      "header_info": null
+    },
+    {
+      "name": "TX-HPLC-FLSH",
+      "used_range": "A1:BO83",
+      "row_count": 83,
+      "col_count": 67,
+      "has_header": false,
+      "title_hint": "TX HPLC FLSH",
+      "header_info": null
+    },
+    {
+      "name": "BUG_FLSH",
+      "used_range": "A1:BO83",
+      "row_count": 83,
+      "col_count": 67,
+      "has_header": false,
+      "title_hint": "BUG FLSH",
+      "header_info": null
+    },
+    {
+      "name": "SITHE_GL",
+      "used_range": "A1:AO83",
+      "row_count": 83,
+      "col_count": 41,
+      "has_header": false,
+      "title_hint": "SITHE GL",
+      "header_info": null
+    },
+    {
+      "name": "EAST-EGM-GL",
+      "used_range": "A1:AQ91",
+      "row_count": 91,
+      "col_count": 43,
+      "has_header": false,
+      "title_hint": "EAST EGM GL",
+      "header_info": null
+    },
+    {
+      "name": "TX-HPLC-GL",
+      "used_range": "A1:AQ91",
+      "row_count": 91,
+      "col_count": 43,
+      "has_header": false,
+      "title_hint": "TX HPLC GL",
+      "header_info": null
+    },
+    {
+      "name": "WE-GL ",
+      "used_range": "A1:AO83",
+      "row_count": 83,
+      "col_count": 41,
+      "has_header": false,
+      "title_hint": "WE GL",
+      "header_info": null
+    },
+    {
+      "name": "STG_GL",
+      "used_range": "A1:AO84",
+      "row_count": 84,
+      "col_count": 41,
+      "has_header": false,
+      "title_hint": "STG GL",
+      "header_info": null
+    },
+    {
+      "name": "ONT_GL ",
+      "used_range": "A1:BY91",
+      "row_count": 91,
+      "col_count": 77,
+      "has_header": false,
+      "title_hint": "ONT GL",
+      "header_info": null
+    },
+    {
+      "name": "Actuals",
+      "used_range": "A1:DN653",
+      "row_count": 653,
+      "col_count": 118,
+      "has_header": false,
+      "title_hint": "Actuals",
+      "header_info": null
+    }
+  ]
+}
\ No newline at end of file
diff --git a/FormulaCascade_Benchmark_eval_200/T3_MEDIUM/internal/FCB-04200/audit.json b/FormulaCascade_Benchmark_eval_200/T3_MEDIUM/internal/FCB-04200/audit.json
new file mode 100644
index 0000000000000000000000000000000000000000..65444745e45d613a43131912d991918213609fa7
--- /dev/null
+++ b/FormulaCascade_Benchmark_eval_200/T3_MEDIUM/internal/FCB-04200/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 10 cells"
+        },
+        {
+          "check": "header_grounding",
+          "pass": true,
+          "severity": "pass",
+          "detail": "1/1 final regions have column_header"
+        },
+        {
+          "check": "mask_consistency",
+          "pass": true,
+          "detail": "mask_last=11942B, src=18418B"
+        },
+        {
+          "check": "dirty_family",
+          "pass": true,
+          "detail": "0 dirty cells"
+        },
+        {
+          "check": "ratio_gate",
+          "pass": true,
+          "detail": "ratio=1.1 (total=11, final=10)"
+        },
+        {
+          "check": "dedup_gate",
+          "pass": true,
+          "detail": "0 duplicate cells across layers"
+        },
+        {
+          "check": "gt_uniqueness",
+          "pass": true,
+          "detail": "10 unique values across 10 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,
+          "severity": null,
+          "detail": "10 lookups"
+        },
+        {
+          "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": 2,
+      "checks": [
+        {
+          "check": "cell_range_match",
+          "pass": true,
+          "detail": "contract=2, 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=1, no explicit steps found (v5 natural format)",
+          "severity": "OK"
+        },
+        {
+          "check": "sheet_name_match",
+          "pass": true,
+          "detail": "contract=['Queensland'], 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 10 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": false,
+          "detail": "referenced=1 mentioned=0 missing=1 [Consol]",
+          "severity": "SOFT_WARN"
+        },
+        {
+          "check": "exemplar_consistency",
+          "pass": true,
+          "severity": "OK",
+          "detail": "checked 2 col groups; CONFLICTS: Queensland!D6: visible='=IFERROR(INDEX(Consol!$C:$G,MA' vs GT pattern='=MID(CELL(\"Filename\",A#),FIND('; Queensland!D7: visible='=IFERROR(INDEX(Consol!$C:$G,MA' vs GT pattern='=MID(CELL(\"Filename\",A#),FIND('"
+        },
+        {
+          "check": "nl_gt_operation_consistency",
+          "pass": false,
+          "detail": "GT funcs: ['CELL', 'FIND', 'IFERROR', 'INDEX', 'MATCH', 'MID', 'ROWS']; MISMATCHES: GT uses INDEX but NL doesn't mention any of: find, index, look up, lookup; GT uses MATCH but NL doesn't mention any of: find, match, position",
+          "severity": "SOFT_WARN"
+        },
+        {
+          "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": "1 leaks out of 11 GT cells (9%); examples: Queensland!D1=Queensland",
+          "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": 11,
+      "total_non_none": 11,
+      "block_reasons": [],
+      "warnings": [
+        "mixed_gt_types:{'float': 10, 'str': 1}"
+      ],
+      "checks": {
+        "rank_tie_risk": {
+          "rank_cells": 0,
+          "tie_issues": 0,
+          "details": []
+        },
+        "trivial_gt": {
+          "issues": []
+        },
+        "gt_type_consistency": {
+          "types": {
+            "float": 10,
+            "str": 1
+          },
+          "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": {
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+        "external_ref_in_other": 0,
+        "error_cells_in_required_chain": 0,
+        "error_cells_in_other": 0,
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+      }
+    },
+    "solver_visibility": {
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+      "total_masked": 11,
+      "total_visible": 326,
+      "depth": 2,
+      "block_reasons": [
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+      "warnings": [],
+      "checks": {
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+          "checked": 11,
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+              "missing_dep": "Queensland!A1",
+              "formula": "=MID(CELL(\"Filename\",A1),FIND(\"]\",CELL(\"Filename\",A1))+1,255)"
+            },
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+              "formula": "=IFERROR(INDEX(Consol!$C:$G,MATCH($D$1&ROWS($A$1:C8),Consol!$H:$H,0),MATCH(F$5,C"
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+              "formula": "=IFERROR(INDEX(Consol!$C:$G,MATCH($D$1&ROWS($A$1:C4),Consol!$H:$H,0),MATCH(F$5,C"
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+              "missing_dep": "Queensland!A1",
+              "formula": "=IFERROR(INDEX(Consol!$C:$G,MATCH($D$1&ROWS($A$1:C7),Consol!$H:$H,0),MATCH(F$5,C"
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+              "missing_dep": "Queensland!A1",
+              "formula": "=IFERROR(INDEX(Consol!$C:$G,MATCH($D$1&ROWS($A$1:C10),Consol!$H:$H,0),MATCH(F$5,"
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+            {
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+              "missing_dep": "Queensland!A1",
+              "formula": "=IFERROR(INDEX(Consol!$C:$G,MATCH($D$1&ROWS($A$1:C6),Consol!$H:$H,0),MATCH(F$5,C"
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+              "missing_dep": "Queensland!A1",
+              "formula": "=IFERROR(INDEX(Consol!$C:$G,MATCH($D$1&ROWS($A$1:C3),Consol!$H:$H,0),MATCH(F$5,C"
+            },
+            {
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+              "missing_dep": "Queensland!A1",
+              "formula": "=IFERROR(INDEX(Consol!$C:$G,MATCH($D$1&ROWS($A$1:C9),Consol!$H:$H,0),MATCH(F$5,C"
+            }
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+          "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": 3,
+          "zero_exemplar_count": 0,
+          "low_exemplar_count": 0
+        },
+        "zero_exemplar_patterns": {
+          "pass": true,
+          "patterns": []
+        },
+        "low_exemplar_patterns": {
+          "pass": true,
+          "patterns": []
+        },
+        "func_coverage": {
+          "IFERROR": {
+            "total_masked": 10,
+            "visible_exemplars": 110
+          },
+          "MID": {
+            "total_masked": 1,
+            "visible_exemplars": 2
+          }
+        }
+      }
+    },
+    "shortcut": {
+      "shortcut_risk": 0.0,
+      "flags": []
+    },
+    "release_audit": {
+      "surface_single_sheet": true,
+      "surface_sheets": [
+        "Queensland"
+      ],
+      "cross_sheet_actual": true,
+      "cross_sheet_ref_count": 50,
+      "referenced_sheets": [
+        "Consol"
+      ],
+      "target_shape": "single_column_series",
+      "layer_sizes": [
+        10,
+        1
+      ],
+      "mask_last_total_cells": 11,
+      "layer_growth_ratios": [
+        0.1
+      ],
+      "pattern_dominance_ratio": 0.9091,
+      "visible_clone_regions": 2,
+      "nearby_visible_clone_regions": 0,
+      "nearby_visible_clone_rows": 0,
+      "nearby_visible_clone_ratio": 0.0,
+      "promptability_score": 0.92,
+      "release_reasons": [
+        "cross_sheet_metadata_mismatch"
+      ],
+      "release_verdict": "KEEP_WITH_FIXES"
+    }
+  },
+  "difficulty": {
+    "task_id": "cross_sheet__dag_5c492f1dea8e",
+    "difficulty_score": 56.3,
+    "difficulty": "medium",
+    "depth": 2,
+    "total_masked": 11,
+    "is_cross_sheet": true,
+    "unique_patterns": 2,
+    "avg_complexity": 8.0,
+    "cross_refs": 30,
+    "visible_exemplar_ratio": 0.565,
+    "score_breakdown": {
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+      "cross_sheet": 10,
+      "cell_count": 6.9,
+      "patterns": 6,
+      "complexity": 12.0,
+      "cross_refs": 10,
+      "vis_penalty": 4.3
+    }
+  }
+}
\ No newline at end of file
diff --git a/FormulaCascade_Benchmark_eval_200/T3_MEDIUM/internal/FCB-04200/ground_truth_full.json b/FormulaCascade_Benchmark_eval_200/T3_MEDIUM/internal/FCB-04200/ground_truth_full.json
new file mode 100644
index 0000000000000000000000000000000000000000..b8e34416d276e219d8195e10a05a824d4a8109b3
--- /dev/null
+++ b/FormulaCascade_Benchmark_eval_200/T3_MEDIUM/internal/FCB-04200/ground_truth_full.json
@@ -0,0 +1,101 @@
+[
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+    "formula": "=IFERROR(INDEX(Consol!$C:$G,MATCH($D$1&ROWS($A$1:C3),Consol!$H:$H,0),MATCH(F$5,Consol!$C$6:$G$6,0)),\"\")",
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+    "formula": "=IFERROR(INDEX(Consol!$C:$G,MATCH($D$1&ROWS($A$1:C4),Consol!$H:$H,0),MATCH(F$5,Consol!$C$6:$G$6,0)),\"\")",
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+    "formula": "=IFERROR(INDEX(Consol!$C:$G,MATCH($D$1&ROWS($A$1:C5),Consol!$H:$H,0),MATCH(F$5,Consol!$C$6:$G$6,0)),\"\")",
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+    "formula": "=IFERROR(INDEX(Consol!$C:$G,MATCH($D$1&ROWS($A$1:C6),Consol!$H:$H,0),MATCH(F$5,Consol!$C$6:$G$6,0)),\"\")",
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+    "pattern_id": "pf_0000",
+    "layer": 1
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+    "formula": "=IFERROR(INDEX(Consol!$C:$G,MATCH($D$1&ROWS($A$1:C8),Consol!$H:$H,0),MATCH(F$5,Consol!$C$6:$G$6,0)),\"\")",
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+    "pattern_id": "pf_0000",
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+    "formula": "=IFERROR(INDEX(Consol!$C:$G,MATCH($D$1&ROWS($A$1:C9),Consol!$H:$H,0),MATCH(F$5,Consol!$C$6:$G$6,0)),\"\")",
+    "cached_value": 0.1155271409927671,
+    "pattern_id": "pf_0000",
+    "layer": 1
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+    "formula": "=IFERROR(INDEX(Consol!$C:$G,MATCH($D$1&ROWS($A$1:C10),Consol!$H:$H,0),MATCH(F$5,Consol!$C$6:$G$6,0)),\"\")",
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+    "pattern_id": "pf_0000",
+    "layer": 1
+  },
+  {
+    "sheet": "Queensland",
+    "col": "D",
+    "row": 1,
+    "formula": "=MID(CELL(\"Filename\",A1),FIND(\"]\",CELL(\"Filename\",A1))+1,255)",
+    "cached_value": "Queensland",
+    "pattern_id": "pf_0002",
+    "layer": 2
+  }
+]
\ No newline at end of file
diff --git a/FormulaCascade_Benchmark_eval_200/T3_MEDIUM/internal/FCB-04200/ground_truth_target.json b/FormulaCascade_Benchmark_eval_200/T3_MEDIUM/internal/FCB-04200/ground_truth_target.json
new file mode 100644
index 0000000000000000000000000000000000000000..cd9f91adcdcd21afb5c7a105af6896bdd97ff5e2
--- /dev/null
+++ b/FormulaCascade_Benchmark_eval_200/T3_MEDIUM/internal/FCB-04200/ground_truth_target.json
@@ -0,0 +1,82 @@
+[
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+    "col": "F",
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+    "formula": "=IFERROR(INDEX(Consol!$C:$G,MATCH($D$1&ROWS($A$1:C1),Consol!$H:$H,0),MATCH(F$5,Consol!$C$6:$G$6,0)),\"\")",
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+    "cached_value": 0.117396508287864,
+    "pattern_id": "pf_0000"
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+    "pattern_id": "pf_0000"
+  },
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+    "formula": "=IFERROR(INDEX(Consol!$C:$G,MATCH($D$1&ROWS($A$1:C10),Consol!$H:$H,0),MATCH(F$5,Consol!$C$6:$G$6,0)),\"\")",
+    "cached_value": 0.8460076582097226,
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+]
\ No newline at end of file
diff --git a/FormulaCascade_Benchmark_eval_200/T3_MEDIUM/internal/FCB-04200/layers.json b/FormulaCascade_Benchmark_eval_200/T3_MEDIUM/internal/FCB-04200/layers.json
new file mode 100644
index 0000000000000000000000000000000000000000..9eb764739de80feb2d63ed0ef627a7f73b2c316d
--- /dev/null
+++ b/FormulaCascade_Benchmark_eval_200/T3_MEDIUM/internal/FCB-04200/layers.json
@@ -0,0 +1,76 @@
+{
+  "dag_id": "dag_5c492f1dea8e",
+  "file_id": "295044d1391577962-automatically-fitering-values-through-based-on-a-criteria-database-and-constituent-tabs",
+  "category": "cross_sheet",
+  "surface_category": "single_sheet",
+  "effective_category": "cross_sheet",
+  "depth": 2,
+  "quality": {
+    "chain_error_cells": 0,
+    "chain_external_cells": 0,
+    "is_clean": true
+  },
+  "layers": [
+    {
+      "layer_index": 1,
+      "new_pattern_groups": [
+        {
+          "region_ids": [
+            "rg_00010"
+          ],
+          "sheet": "Queensland",
+          "col": "F",
+          "rows": [
+            6,
+            7,
+            8,
+            9,
+            10,
+            11,
+            12,
+            13,
+            14,
+            15
+          ],
+          "row_ranges": "6-15",
+          "row_count": 10,
+          "pattern_id": "pf_0000",
+          "normalized_pattern": "=IFERROR(INDEX(CONSOL!$C:$G,MATCH([$D,$1]&ROWS([$A,$1]:[C-3,R-5]),CONSOL!$H:$H,0),MATCH([C,$5],CONSOL![$C,$6]:[$G,$6],0)),\"\")",
+          "sample_formula": "=IFERROR(INDEX(Consol!$C:$G,MATCH($D$1&ROWS($A$1:C1),Consol!$H:$H,0),MATCH(F$5,Consol!$C$6:$G$6,0)),\"\")"
+        }
+      ],
+      "new_eval_cells": 10,
+      "total_masked_cells": 10
+    },
+    {
+      "layer_index": 2,
+      "new_pattern_groups": [
+        {
+          "region_ids": [
+            "rg_00015"
+          ],
+          "sheet": "Queensland",
+          "col": "D",
+          "rows": [
+            1
+          ],
+          "row_ranges": "1",
+          "row_count": 1,
+          "pattern_id": "pf_0002",
+          "normalized_pattern": "=MID(CELL(\"FILENAME\",[C-3,R]),FIND(\"]\",CELL(\"FILENAME\",[C-3,R]))+1,255)",
+          "sample_formula": "=MID(CELL(\"Filename\",A1),FIND(\"]\",CELL(\"Filename\",A1))+1,255)"
+        }
+      ],
+      "new_eval_cells": 1,
+      "total_masked_cells": 11
+    }
+  ],
+  "sink": {
+    "region_id": "rg_00010",
+    "sheet": "Queensland",
+    "col": "F",
+    "pattern_id": "pf_0000",
+    "row_count": 10,
+    "family_size": 10
+  }
+}
\ No newline at end of file
diff --git a/FormulaCascade_Benchmark_eval_200/T3_MEDIUM/internal/FCB-04200/mask_last.xlsx b/FormulaCascade_Benchmark_eval_200/T3_MEDIUM/internal/FCB-04200/mask_last.xlsx
new file mode 100644
index 0000000000000000000000000000000000000000..e199a4b5ae823e51290aab955a3845fb2881fff6
Binary files /dev/null and b/FormulaCascade_Benchmark_eval_200/T3_MEDIUM/internal/FCB-04200/mask_last.xlsx differ
diff --git a/FormulaCascade_Benchmark_eval_200/T3_MEDIUM/internal/FCB-04200/nl_task.json b/FormulaCascade_Benchmark_eval_200/T3_MEDIUM/internal/FCB-04200/nl_task.json
new file mode 100644
index 0000000000000000000000000000000000000000..2cc9773d91523459eb2eb32b3f6a35e5ae374195
--- /dev/null
+++ b/FormulaCascade_Benchmark_eval_200/T3_MEDIUM/internal/FCB-04200/nl_task.json
@@ -0,0 +1,26 @@
+{
+  "task_id": "cross_sheet__dag_5c492f1dea8e",
+  "prompt_en": "The workbook is organized by province, with separate sheets such as Victoria, NSW, and Queensland, and the data laid out under labels like Province, Category, List A, List B, and List C. On the Queensland sheet, please fill in the missing entries in the List B column, specifically F6:F15. Some related blank list fields in the workbook may need to be completed first so the Queensland List B entries fit with the rest of the sheet. Please save the completed workbook as an .xlsx file.",
+  "prompt_cn": "这个工作簿按省份整理，包含 Victoria、NSW 和 Queensland 等工作表，数据字段包括 Province、Category、List A、List B 和 List C。请在 Queensland 工作表中补全 List B 列缺失的内容，具体位置是 F6:F15。工作簿里有些相关的空白列表字段可能需要先补好，这样 Queensland 的 List B 内容才能和整张表保持一致。请将完成后的工作簿保存为 .xlsx 文件。",
+  "quality_notes": "The prompt identifies the relevant sheet, column, and range, frames the workbook using only visible labels, mentions dependencies naturally without operational hints, and includes the required save instruction.",
+  "post_check_issues": [],
+  "prompt_mode": "minimal",
+  "hint_leakage": {
+    "score": 8,
+    "level": "low",
+    "max_possible": 100,
+    "dimensions": {
+      "operation_words": 0,
+      "cell_range_density": 3,
+      "step_by_step": 5,
+      "column_operation_mapping": 0,
+      "formula_pattern_hints": 0
+    },
+    "operation_words_found": [],
+    "cell_ranges_found": 1
+  },
+  "version": "v7",
+  "model": "gpt-5.5",
+  "elapsed": 33.9,
+  "attempt": 1
+}
\ No newline at end of file
diff --git a/FormulaCascade_Benchmark_eval_200/T3_MEDIUM/internal/FCB-04200/release_qc.json b/FormulaCascade_Benchmark_eval_200/T3_MEDIUM/internal/FCB-04200/release_qc.json
new file mode 100644
index 0000000000000000000000000000000000000000..6cf1032d80a734e4a0eb5ba9270f09489adf0b52
--- /dev/null
+++ b/FormulaCascade_Benchmark_eval_200/T3_MEDIUM/internal/FCB-04200/release_qc.json
@@ -0,0 +1,58 @@
+{
+  "binary": true,
+  "binary_reason": "The task is structurally valid and solvable from the masked workbook, though visible adjacent formulas and duplicated visible data make it relatively easy.",
+  "D1": {
+    "score": 4,
+    "reason": "All 11 masked cells are real in-range cells, the mask boundary is clean, and there are no extra masked cells. However, the target F-column formula is strongly exposed by adjacent visible D/E/G formulas, especially G6:G15 which can effectively be copied left into F6:F15, so there is some pattern leakage, though the masked D1 prerequisite still requires minimal chain reasoning."
+  },
+  "D2": {
+    "score": 5,
+    "reason": "The GT formulas are consistent with the visible source structure: F6:F15 use INDEX/MATCH against Consol with the Queensland sheet-name key in D1 and the List B header in F5. Cached values match the visible duplicated List B values in the source window, and the formulas are deterministic aside from the standard workbook-dependent CELL filename behavior used to derive the sheet name."
+  },
+  "D3": {
+    "score": 4,
+    "reason": "The NL clearly identifies the final target cells, Queensland!F6:F15, and the relevant List B column. It does not explicitly mention the Consol sheet or the D1 sheet-name helper, and its phrase about 'related blank list fields' is slightly inaccurate because the prerequisite is not a list field, but the main request is understandable."
+  },
+  "D4": {
+    "score": 4,
+    "reason": "Using only mask_last.xlsx and the NL, the root evidence is largely visible. The target column headers are present, adjacent formulas in D/E/G expose the cross-sheet INDEX/MATCH structure and the dependency on $D$1, and the sheet context/NL indicate that D1 should represent Queensland. The solver can reconstruct the chain with effort, although D1's exact dynamic CELL/MID formula is not directly described and may be inferred as a constant sheet-name value instead.",
+    "d4_type": "ok"
+  },
+  "D5": {
+    "score": 5,
+    "reason": "The source workbook appears internally sound: formulas are consistent across rows and columns, headers are meaningful and repeated consistently, cached values align with the displayed source data, and there are no signs of corrupted values, circular references, or broken formulas."
+  },
+  "D6": {
+    "score": 5,
+    "reason": "The prompt sounds like a natural workplace request, naming the workbook organization and the cells to complete without benchmark-specific jargon."
+  },
+  "total": 27,
+  "verdict": "RELEASE",
+  "verdict_reason": "Publishable as-is: the mask is clean, GT is correct, and the task is solvable. The main caveat is that adjacent visible formulas and visible duplicated values make the final target comparatively easy, but this is not a fundamental quality failure.",
+  "frontier_hardness": {
+    "score": 2,
+    "reason": "A frontier model would likely succeed. The chain depth is only 2, the target formula pattern is strongly exposed by neighboring formulas, and D1 can be inferred from the Queensland sheet context and visible formula references. Cross-sheet reasoning is present but not especially difficult.",
+    "fail_reason": "easy",
+    "is_valid_hardness": false
+  },
+  "_prompt_chars": 22783,
+  "_timing_load_workbooks": 0.09,
+  "_timing_context": 0.0,
+  "_timing_api": 34.75,
+  "local_difficulty": {
+    "difficulty_score": 56.3,
+    "difficulty": "medium",
+    "depth": 2,
+    "total_masked": 11,
+    "is_cross_sheet": true,
+    "unique_patterns": 2,
+    "avg_complexity": 8,
+    "cross_refs": 30,
+    "visible_exemplar_ratio": 0.565
+  },
+  "task_id": "cross_sheet__dag_5c492f1dea8e",
+  "elapsed": 34.8,
+  "publish_decision": "YES",
+  "release_tier": "GOLD",
+  "hard_block_reasons": []
+}
\ No newline at end of file
diff --git a/FormulaCascade_Benchmark_eval_200/T3_MEDIUM/internal/FCB-04200/src.xlsx b/FormulaCascade_Benchmark_eval_200/T3_MEDIUM/internal/FCB-04200/src.xlsx
new file mode 100644
index 0000000000000000000000000000000000000000..592f20bea38c377679fc38a25b843337d7758c9b
Binary files /dev/null and b/FormulaCascade_Benchmark_eval_200/T3_MEDIUM/internal/FCB-04200/src.xlsx differ
diff --git a/FormulaCascade_Benchmark_eval_200/T3_MEDIUM/internal/FCB-04200/target_contract.json b/FormulaCascade_Benchmark_eval_200/T3_MEDIUM/internal/FCB-04200/target_contract.json
new file mode 100644
index 0000000000000000000000000000000000000000..6fd70f4cbc6ebfa3d0eb533c161ef40171ac62ce
--- /dev/null
+++ b/FormulaCascade_Benchmark_eval_200/T3_MEDIUM/internal/FCB-04200/target_contract.json
@@ -0,0 +1,60 @@
+{
+  "task_id": "cross_sheet__dag_5c492f1dea8e",
+  "category": "cross_sheet",
+  "depth": 2,
+  "final_target": {
+    "regions": [
+      {
+        "sheet": "Queensland",
+        "column": "F",
+        "column_header": "List B",
+        "cell_range": "F6:F15",
+        "cell_count": 10,
+        "rows": [
+          6,
+          7,
+          8,
+          9,
+          10,
+          11,
+          12,
+          13,
+          14,
+          15
+        ],
+        "first_row_label": "",
+        "last_row_label": ""
+      }
+    ],
+    "cell_count": 10,
+    "formula_families": [
+      "lookup"
+    ]
+  },
+  "prerequisite_steps": [
+    {
+      "layer": 2,
+      "regions": [
+        {
+          "sheet": "Queensland",
+          "column": "D",
+          "column_header": "Queensland",
+          "cell_range": "D1",
+          "cell_count": 1,
+          "rows": [
+            1
+          ],
+          "first_row_label": "",
+          "last_row_label": ""
+        }
+      ],
+      "cell_count": 1
+    }
+  ],
+  "total_prerequisite_cells": 1,
+  "total_masked_cells": 11,
+  "ratio_total_vs_final": 1.1,
+  "sheets_involved": [
+    "Queensland"
+  ]
+}
\ No newline at end of file
diff --git a/FormulaCascade_Benchmark_eval_200/T3_MEDIUM/internal/FCB-04200/task_meta.json b/FormulaCascade_Benchmark_eval_200/T3_MEDIUM/internal/FCB-04200/task_meta.json
new file mode 100644
index 0000000000000000000000000000000000000000..ce01627ad965f0505a7af9b7fa6cfcbc03566896
--- /dev/null
+++ b/FormulaCascade_Benchmark_eval_200/T3_MEDIUM/internal/FCB-04200/task_meta.json
@@ -0,0 +1,64 @@
+{
+  "fcb_id": "FCB-04200",
+  "task_id": "cross_sheet__dag_5c492f1dea8e",
+  "tier": "T3_MEDIUM",
+  "category": "cross_sheet",
+  "depth": 2,
+  "total_masked": 11,
+  "is_cross_sheet": true,
+  "prompt_en": "The workbook is organized by province, with separate sheets such as Victoria, NSW, and Queensland, and the data laid out under labels like Province, Category, List A, List B, and List C. On the Queensland sheet, please fill in the missing entries in the List B column, specifically F6:F15. Some related blank list fields in the workbook may need to be completed first so the Queensland List B entries fit with the rest of the sheet. Please save the completed workbook as an .xlsx file.",
+  "prompt_cn": "这个工作簿按省份整理，包含 Victoria、NSW 和 Queensland 等工作表，数据字段包括 Province、Category、List A、List B 和 List C。请在 Queensland 工作表中补全 List B 列缺失的内容，具体位置是 F6:F15。工作簿里有些相关的空白列表字段可能需要先补好，这样 Queensland 的 List B 内容才能和整张表保持一致。请将完成后的工作簿保存为 .xlsx 文件。",
+  "qc": {
+    "total": 27,
+    "verdict": "RELEASE",
+    "D1": 4,
+    "D2": 5,
+    "D3": 4,
+    "D4": 4,
+    "D5": 5,
+    "D6": 5,
+    "frontier_hardness": 2,
+    "local_difficulty": 56.3
+  },
+  "source_file_id": "295044d1391577962-automatically-fitering-values-through-based-on-a-criteria-database-and-constituent-tabs",
+  "inferred_domain": "general",
+  "domain_confidence": 0.0,
+  "sheet_profiles": [
+    {
+      "name": "Consol",
+      "used_range": "C6:M39",
+      "row_count": 34,
+      "col_count": 11,
+      "has_header": false,
+      "title_hint": "Consol",
+      "header_info": null
+    },
+    {
+      "name": "Victoria",
+      "used_range": "D1:G26",
+      "row_count": 26,
+      "col_count": 4,
+      "has_header": false,
+      "title_hint": "Victoria",
+      "header_info": null
+    },
+    {
+      "name": "NSW",
+      "used_range": "D1:G29",
+      "row_count": 29,
+      "col_count": 4,
+      "has_header": false,
+      "title_hint": "NSW",
+      "header_info": null
+    },
+    {
+      "name": "Queensland",
+      "used_range": "D1:G30",
+      "row_count": 30,
+      "col_count": 4,
+      "has_header": false,
+      "title_hint": "Queensland",
+      "header_info": null
+    }
+  ]
+}
\ No newline at end of file
diff --git a/FormulaCascade_Benchmark_eval_200/T3_MEDIUM/internal/FCB-04211/audit.json b/FormulaCascade_Benchmark_eval_200/T3_MEDIUM/internal/FCB-04211/audit.json
new file mode 100644
index 0000000000000000000000000000000000000000..d535aefedcc909ea876b0c81ba3c5950cf555d13
--- /dev/null
+++ b/FormulaCascade_Benchmark_eval_200/T3_MEDIUM/internal/FCB-04211/audit.json
@@ -0,0 +1,414 @@
+{
+  "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 25 cells"
+        },
+        {
+          "check": "header_grounding",
+          "pass": true,
+          "severity": "pass",
+          "detail": "1/1 final regions have column_header"
+        },
+        {
+          "check": "mask_consistency",
+          "pass": true,
+          "detail": "mask_last=19835B, src=27298B"
+        },
+        {
+          "check": "dirty_family",
+          "pass": true,
+          "detail": "0 dirty cells"
+        },
+        {
+          "check": "ratio_gate",
+          "pass": true,
+          "detail": "ratio=1.0 (total=26, final=25)"
+        },
+        {
+          "check": "dedup_gate",
+          "pass": true,
+          "detail": "0 duplicate cells across layers"
+        },
+        {
+          "check": "gt_uniqueness",
+          "pass": true,
+          "detail": "25 unique values across 25 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": true,
+          "detail": "contract=2, 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=1, no explicit steps found (v5 natural format)",
+          "severity": "OK"
+        },
+        {
+          "check": "sheet_name_match",
+          "pass": true,
+          "detail": "contract=['Sheet2'], 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 25 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": false,
+          "detail": "referenced=1 mentioned=0 missing=1 [Sheet1]",
+          "severity": "SOFT_WARN"
+        },
+        {
+          "check": "exemplar_consistency",
+          "pass": true,
+          "severity": "OK",
+          "detail": "checked 1 col groups"
+        },
+        {
+          "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 26 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": 26,
+      "total_non_none": 26,
+      "block_reasons": [],
+      "warnings": [],
+      "checks": {
+        "rank_tie_risk": {
+          "rank_cells": 0,
+          "tie_issues": 0,
+          "details": []
+        },
+        "trivial_gt": {
+          "issues": []
+        },
+        "gt_type_consistency": {
+          "types": {
+            "str": 26
+          },
+          "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": 26
+      }
+    },
+    "solver_visibility": {
+      "contract_cells": 26,
+      "total_masked": 26,
+      "total_visible": 193,
+      "depth": 2,
+      "block_reasons": [],
+      "warnings": [],
+      "checks": {
+        "broken_chains": {
+          "count": 0,
+          "checked": 26,
+          "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": 10,
+          "zero_exemplar_count": 0,
+          "low_exemplar_count": 1
+        },
+        "zero_exemplar_patterns": {
+          "pass": true,
+          "patterns": []
+        },
+        "low_exemplar_patterns": {
+          "pass": false,
+          "patterns": [
+            {
+              "pattern": "=REF+1",
+              "total_in_src": 26,
+              "sample_formula": "=$B$5+1"
+            }
+          ]
+        },
+        "func_coverage": {
+          "arithmetic": {
+            "total_masked": 25,
+            "visible_exemplars": 6
+          },
+          "reference": {
+            "total_masked": 1,
+            "visible_exemplars": 8
+          }
+        }
+      }
+    },
+    "shortcut": {
+      "shortcut_risk": 0.0,
+      "flags": []
+    },
+    "release_audit": {
+      "surface_single_sheet": true,
+      "surface_sheets": [
+        "Sheet2"
+      ],
+      "cross_sheet_actual": true,
+      "cross_sheet_ref_count": 1,
+      "referenced_sheets": [
+        "Sheet1"
+      ],
+      "target_shape": "single_column_series",
+      "layer_sizes": [
+        25,
+        1
+      ],
+      "mask_last_total_cells": 26,
+      "layer_growth_ratios": [
+        0.04
+      ],
+      "pattern_dominance_ratio": 0.9615,
+      "visible_clone_regions": 0,
+      "nearby_visible_clone_regions": 0,
+      "nearby_visible_clone_rows": 0,
+      "nearby_visible_clone_ratio": 0.0,
+      "promptability_score": 0.92,
+      "release_reasons": [
+        "cross_sheet_metadata_mismatch"
+      ],
+      "release_verdict": "KEEP_WITH_FIXES"
+    }
+  },
+  "difficulty": {
+    "task_id": "cross_sheet__dag_65b779084b70",
+    "difficulty_score": 46.5,
+    "difficulty": "medium",
+    "depth": 2,
+    "total_masked": 26,
+    "is_cross_sheet": true,
+    "unique_patterns": 2,
+    "avg_complexity": 3.0,
+    "cross_refs": 0,
+    "visible_exemplar_ratio": 0.038,
+    "score_breakdown": {
+      "depth": 7,
+      "cross_sheet": 10,
+      "cell_count": 9.4,
+      "patterns": 6,
+      "complexity": 4.5,
+      "cross_refs": 0,
+      "vis_penalty": 9.6
+    }
+  }
+}
\ No newline at end of file
diff --git a/FormulaCascade_Benchmark_eval_200/T3_MEDIUM/internal/FCB-04211/ground_truth_full.json b/FormulaCascade_Benchmark_eval_200/T3_MEDIUM/internal/FCB-04211/ground_truth_full.json
new file mode 100644
index 0000000000000000000000000000000000000000..9dc147bba4463fcc3b8eeb46276cd59067c0a203
--- /dev/null
+++ b/FormulaCascade_Benchmark_eval_200/T3_MEDIUM/internal/FCB-04211/ground_truth_full.json
@@ -0,0 +1,236 @@
+[
+  {
+    "sheet": "Sheet2",
+    "col": "B",
+    "row": 4,
+    "formula": "=B3+1",
+    "cached_value": "2021-12-19 00:00:00",
+    "pattern_id": "pf_0003",
+    "layer": 1
+  },
+  {
+    "sheet": "Sheet2",
+    "col": "B",
+    "row": 5,
+    "formula": "=B4+1",
+    "cached_value": "2021-12-20 00:00:00",
+    "pattern_id": "pf_0003",
+    "layer": 1
+  },
+  {
+    "sheet": "Sheet2",
+    "col": "B",
+    "row": 6,
+    "formula": "=B5+1",
+    "cached_value": "2021-12-21 00:00:00",
+    "pattern_id": "pf_0003",
+    "layer": 1
+  },
+  {
+    "sheet": "Sheet2",
+    "col": "B",
+    "row": 7,
+    "formula": "=B6+1",
+    "cached_value": "2021-12-22 00:00:00",
+    "pattern_id": "pf_0003",
+    "layer": 1
+  },
+  {
+    "sheet": "Sheet2",
+    "col": "B",
+    "row": 8,
+    "formula": "=B7+1",
+    "cached_value": "2021-12-23 00:00:00",
+    "pattern_id": "pf_0003",
+    "layer": 1
+  },
+  {
+    "sheet": "Sheet2",
+    "col": "B",
+    "row": 9,
+    "formula": "=B8+1",
+    "cached_value": "2021-12-24 00:00:00",
+    "pattern_id": "pf_0003",
+    "layer": 1
+  },
+  {
+    "sheet": "Sheet2",
+    "col": "B",
+    "row": 10,
+    "formula": "=B9+1",
+    "cached_value": "2021-12-25 00:00:00",
+    "pattern_id": "pf_0003",
+    "layer": 1
+  },
+  {
+    "sheet": "Sheet2",
+    "col": "B",
+    "row": 11,
+    "formula": "=B10+1",
+    "cached_value": "2021-12-26 00:00:00",
+    "pattern_id": "pf_0003",
+    "layer": 1
+  },
+  {
+    "sheet": "Sheet2",
+    "col": "B",
+    "row": 12,
+    "formula": "=B11+1",
+    "cached_value": "2021-12-27 00:00:00",
+    "pattern_id": "pf_0003",
+    "layer": 1
+  },
+  {
+    "sheet": "Sheet2",
+    "col": "B",
+    "row": 13,
+    "formula": "=B12+1",
+    "cached_value": "2021-12-28 00:00:00",
+    "pattern_id": "pf_0003",
+    "layer": 1
+  },
+  {
+    "sheet": "Sheet2",
+    "col": "B",
+    "row": 14,
+    "formula": "=B13+1",
+    "cached_value": "2021-12-29 00:00:00",
+    "pattern_id": "pf_0003",
+    "layer": 1
+  },
+  {
+    "sheet": "Sheet2",
+    "col": "B",
+    "row": 15,
+    "formula": "=B14+1",
+    "cached_value": "2021-12-30 00:00:00",
+    "pattern_id": "pf_0003",
+    "layer": 1
+  },
+  {
+    "sheet": "Sheet2",
+    "col": "B",
+    "row": 16,
+    "formula": "=B15+1",
+    "cached_value": "2021-12-31 00:00:00",
+    "pattern_id": "pf_0003",
+    "layer": 1
+  },
+  {
+    "sheet": "Sheet2",
+    "col": "B",
+    "row": 17,
+    "formula": "=B16+1",
+    "cached_value": "2022-01-01 00:00:00",
+    "pattern_id": "pf_0003",
+    "layer": 1
+  },
+  {
+    "sheet": "Sheet2",
+    "col": "B",
+    "row": 18,
+    "formula": "=B17+1",
+    "cached_value": "2022-01-02 00:00:00",
+    "pattern_id": "pf_0003",
+    "layer": 1
+  },
+  {
+    "sheet": "Sheet2",
+    "col": "B",
+    "row": 19,
+    "formula": "=B18+1",
+    "cached_value": "2022-01-03 00:00:00",
+    "pattern_id": "pf_0003",
+    "layer": 1
+  },
+  {
+    "sheet": "Sheet2",
+    "col": "B",
+    "row": 20,
+    "formula": "=B19+1",
+    "cached_value": "2022-01-04 00:00:00",
+    "pattern_id": "pf_0003",
+    "layer": 1
+  },
+  {
+    "sheet": "Sheet2",
+    "col": "B",
+    "row": 21,
+    "formula": "=B20+1",
+    "cached_value": "2022-01-05 00:00:00",
+    "pattern_id": "pf_0003",
+    "layer": 1
+  },
+  {
+    "sheet": "Sheet2",
+    "col": "B",
+    "row": 22,
+    "formula": "=B21+1",
+    "cached_value": "2022-01-06 00:00:00",
+    "pattern_id": "pf_0003",
+    "layer": 1
+  },
+  {
+    "sheet": "Sheet2",
+    "col": "B",
+    "row": 23,
+    "formula": "=B22+1",
+    "cached_value": "2022-01-07 00:00:00",
+    "pattern_id": "pf_0003",
+    "layer": 1
+  },
+  {
+    "sheet": "Sheet2",
+    "col": "B",
+    "row": 24,
+    "formula": "=B23+1",
+    "cached_value": "2022-01-08 00:00:00",
+    "pattern_id": "pf_0003",
+    "layer": 1
+  },
+  {
+    "sheet": "Sheet2",
+    "col": "B",
+    "row": 25,
+    "formula": "=B24+1",
+    "cached_value": "2022-01-09 00:00:00",
+    "pattern_id": "pf_0003",
+    "layer": 1
+  },
+  {
+    "sheet": "Sheet2",
+    "col": "B",
+    "row": 26,
+    "formula": "=B25+1",
+    "cached_value": "2022-01-10 00:00:00",
+    "pattern_id": "pf_0003",
+    "layer": 1
+  },
+  {
+    "sheet": "Sheet2",
+    "col": "B",
+    "row": 27,
+    "formula": "=B26+1",
+    "cached_value": "2022-01-11 00:00:00",
+    "pattern_id": "pf_0003",
+    "layer": 1
+  },
+  {
+    "sheet": "Sheet2",
+    "col": "B",
+    "row": 28,
+    "formula": "=B27+1",
+    "cached_value": "2022-01-12 00:00:00",
+    "pattern_id": "pf_0003",
+    "layer": 1
+  },
+  {
+    "sheet": "Sheet2",
+    "col": "B",
+    "row": 3,
+    "formula": "=Sheet1!B5",
+    "cached_value": "2021-12-18 00:00:00",
+    "pattern_id": "pf_0012",
+    "layer": 2
+  }
+]
\ No newline at end of file
diff --git a/FormulaCascade_Benchmark_eval_200/T3_MEDIUM/internal/FCB-04211/ground_truth_target.json b/FormulaCascade_Benchmark_eval_200/T3_MEDIUM/internal/FCB-04211/ground_truth_target.json
new file mode 100644
index 0000000000000000000000000000000000000000..8115e6cfe5ffb3770cced9f03f766322f32fdc28
--- /dev/null
+++ b/FormulaCascade_Benchmark_eval_200/T3_MEDIUM/internal/FCB-04211/ground_truth_target.json
@@ -0,0 +1,202 @@
+[
+  {
+    "sheet": "Sheet2",
+    "col": "B",
+    "row": 4,
+    "formula": "=B3+1",
+    "cached_value": "2021-12-19 00:00:00",
+    "pattern_id": "pf_0003"
+  },
+  {
+    "sheet": "Sheet2",
+    "col": "B",
+    "row": 5,
+    "formula": "=B4+1",
+    "cached_value": "2021-12-20 00:00:00",
+    "pattern_id": "pf_0003"
+  },
+  {
+    "sheet": "Sheet2",
+    "col": "B",
+    "row": 6,
+    "formula": "=B5+1",
+    "cached_value": "2021-12-21 00:00:00",
+    "pattern_id": "pf_0003"
+  },
+  {
+    "sheet": "Sheet2",
+    "col": "B",
+    "row": 7,
+    "formula": "=B6+1",
+    "cached_value": "2021-12-22 00:00:00",
+    "pattern_id": "pf_0003"
+  },
+  {
+    "sheet": "Sheet2",
+    "col": "B",
+    "row": 8,
+    "formula": "=B7+1",
+    "cached_value": "2021-12-23 00:00:00",
+    "pattern_id": "pf_0003"
+  },
+  {
+    "sheet": "Sheet2",
+    "col": "B",
+    "row": 9,
+    "formula": "=B8+1",
+    "cached_value": "2021-12-24 00:00:00",
+    "pattern_id": "pf_0003"
+  },
+  {
+    "sheet": "Sheet2",
+    "col": "B",
+    "row": 10,
+    "formula": "=B9+1",
+    "cached_value": "2021-12-25 00:00:00",
+    "pattern_id": "pf_0003"
+  },
+  {
+    "sheet": "Sheet2",
+    "col": "B",
+    "row": 11,
+    "formula": "=B10+1",
+    "cached_value": "2021-12-26 00:00:00",
+    "pattern_id": "pf_0003"
+  },
+  {
+    "sheet": "Sheet2",
+    "col": "B",
+    "row": 12,
+    "formula": "=B11+1",
+    "cached_value": "2021-12-27 00:00:00",
+    "pattern_id": "pf_0003"
+  },
+  {
+    "sheet": "Sheet2",
+    "col": "B",
+    "row": 13,
+    "formula": "=B12+1",
+    "cached_value": "2021-12-28 00:00:00",
+    "pattern_id": "pf_0003"
+  },
+  {
+    "sheet": "Sheet2",
+    "col": "B",
+    "row": 14,
+    "formula": "=B13+1",
+    "cached_value": "2021-12-29 00:00:00",
+    "pattern_id": "pf_0003"
+  },
+  {
+    "sheet": "Sheet2",
+    "col": "B",
+    "row": 15,
+    "formula": "=B14+1",
+    "cached_value": "2021-12-30 00:00:00",
+    "pattern_id": "pf_0003"
+  },
+  {
+    "sheet": "Sheet2",
+    "col": "B",
+    "row": 16,
+    "formula": "=B15+1",
+    "cached_value": "2021-12-31 00:00:00",
+    "pattern_id": "pf_0003"
+  },
+  {
+    "sheet": "Sheet2",
+    "col": "B",
+    "row": 17,
+    "formula": "=B16+1",
+    "cached_value": "2022-01-01 00:00:00",
+    "pattern_id": "pf_0003"
+  },
+  {
+    "sheet": "Sheet2",
+    "col": "B",
+    "row": 18,
+    "formula": "=B17+1",
+    "cached_value": "2022-01-02 00:00:00",
+    "pattern_id": "pf_0003"
+  },
+  {
+    "sheet": "Sheet2",
+    "col": "B",
+    "row": 19,
+    "formula": "=B18+1",
+    "cached_value": "2022-01-03 00:00:00",
+    "pattern_id": "pf_0003"
+  },
+  {
+    "sheet": "Sheet2",
+    "col": "B",
+    "row": 20,
+    "formula": "=B19+1",
+    "cached_value": "2022-01-04 00:00:00",
+    "pattern_id": "pf_0003"
+  },
+  {
+    "sheet": "Sheet2",
+    "col": "B",
+    "row": 21,
+    "formula": "=B20+1",
+    "cached_value": "2022-01-05 00:00:00",
+    "pattern_id": "pf_0003"
+  },
+  {
+    "sheet": "Sheet2",
+    "col": "B",
+    "row": 22,
+    "formula": "=B21+1",
+    "cached_value": "2022-01-06 00:00:00",
+    "pattern_id": "pf_0003"
+  },
+  {
+    "sheet": "Sheet2",
+    "col": "B",
+    "row": 23,
+    "formula": "=B22+1",
+    "cached_value": "2022-01-07 00:00:00",
+    "pattern_id": "pf_0003"
+  },
+  {
+    "sheet": "Sheet2",
+    "col": "B",
+    "row": 24,
+    "formula": "=B23+1",
+    "cached_value": "2022-01-08 00:00:00",
+    "pattern_id": "pf_0003"
+  },
+  {
+    "sheet": "Sheet2",
+    "col": "B",
+    "row": 25,
+    "formula": "=B24+1",
+    "cached_value": "2022-01-09 00:00:00",
+    "pattern_id": "pf_0003"
+  },
+  {
+    "sheet": "Sheet2",
+    "col": "B",
+    "row": 26,
+    "formula": "=B25+1",
+    "cached_value": "2022-01-10 00:00:00",
+    "pattern_id": "pf_0003"
+  },
+  {
+    "sheet": "Sheet2",
+    "col": "B",
+    "row": 27,
+    "formula": "=B26+1",
+    "cached_value": "2022-01-11 00:00:00",
+    "pattern_id": "pf_0003"
+  },
+  {
+    "sheet": "Sheet2",
+    "col": "B",
+    "row": 28,
+    "formula": "=B27+1",
+    "cached_value": "2022-01-12 00:00:00",
+    "pattern_id": "pf_0003"
+  }
+]
\ No newline at end of file
diff --git a/FormulaCascade_Benchmark_eval_200/T3_MEDIUM/internal/FCB-04211/layers.json b/FormulaCascade_Benchmark_eval_200/T3_MEDIUM/internal/FCB-04211/layers.json
new file mode 100644
index 0000000000000000000000000000000000000000..a3825fe1e21a7f2ef6527fcd6ae79d9140263909
--- /dev/null
+++ b/FormulaCascade_Benchmark_eval_200/T3_MEDIUM/internal/FCB-04211/layers.json
@@ -0,0 +1,91 @@
+{
+  "dag_id": "dag_65b779084b70",
+  "file_id": "757579d1638348385-looking-for-a-formula-that-will-display-the-name-of-the-employee-available-shift-schedule-project",
+  "category": "cross_sheet",
+  "surface_category": "single_sheet",
+  "effective_category": "cross_sheet",
+  "depth": 2,
+  "quality": {
+    "chain_error_cells": 0,
+    "chain_external_cells": 0,
+    "is_clean": true
+  },
+  "layers": [
+    {
+      "layer_index": 1,
+      "new_pattern_groups": [
+        {
+          "region_ids": [
+            "rg_00224"
+          ],
+          "sheet": "Sheet2",
+          "col": "B",
+          "rows": [
+            4,
+            5,
+            6,
+            7,
+            8,
+            9,
+            10,
+            11,
+            12,
+            13,
+            14,
+            15,
+            16,
+            17,
+            18,
+            19,
+            20,
+            21,
+            22,
+            23,
+            24,
+            25,
+            26,
+            27,
+            28
+          ],
+          "row_ranges": "4-28",
+          "row_count": 25,
+          "pattern_id": "pf_0003",
+          "normalized_pattern": "=[C,R-1]+1",
+          "sample_formula": "=B3+1"
+        }
+      ],
+      "new_eval_cells": 25,
+      "total_masked_cells": 25
+    },
+    {
+      "layer_index": 2,
+      "new_pattern_groups": [
+        {
+          "region_ids": [
+            "rg_00233"
+          ],
+          "sheet": "Sheet2",
+          "col": "B",
+          "rows": [
+            3
+          ],
+          "row_ranges": "3",
+          "row_count": 1,
+          "pattern_id": "pf_0012",
+          "normalized_pattern": "=SHEET1![C,R+2]",
+          "sample_formula": "=Sheet1!B5"
+        }
+      ],
+      "new_eval_cells": 1,
+      "total_masked_cells": 26
+    }
+  ],
+  "sink": {
+    "region_id": "rg_00224",
+    "sheet": "Sheet2",
+    "col": "B",
+    "pattern_id": "pf_0003",
+    "row_count": 25,
+    "family_size": 25
+  }
+}
\ No newline at end of file
diff --git a/FormulaCascade_Benchmark_eval_200/T3_MEDIUM/internal/FCB-04211/mask_last.xlsx b/FormulaCascade_Benchmark_eval_200/T3_MEDIUM/internal/FCB-04211/mask_last.xlsx
new file mode 100644
index 0000000000000000000000000000000000000000..d68be510a5c39d58e92b7d59f90252e87d38cf30
Binary files /dev/null and b/FormulaCascade_Benchmark_eval_200/T3_MEDIUM/internal/FCB-04211/mask_last.xlsx differ
diff --git a/FormulaCascade_Benchmark_eval_200/T3_MEDIUM/internal/FCB-04211/nl_task.json b/FormulaCascade_Benchmark_eval_200/T3_MEDIUM/internal/FCB-04211/nl_task.json
new file mode 100644
index 0000000000000000000000000000000000000000..79ea420cd5c8969ece9ba46bec456b5feab04ade
--- /dev/null
+++ b/FormulaCascade_Benchmark_eval_200/T3_MEDIUM/internal/FCB-04211/nl_task.json
@@ -0,0 +1,26 @@
+{
+  "task_id": "cross_sheet__dag_65b779084b70",
+  "prompt_en": "The workbook is an Employee Shift Schedule with labels like “Insert Company Name Here,” “Week Beginning:,” “Employee,” “Name 1,” “Name 2,” and “Date.” On Sheet2, the Date column is still blank for the schedule entries, specifically cells B4:B28, and those dates need to be filled in so the employee schedule reads correctly. Any related blank schedule information should be settled in the natural order the sheet expects, since the date entries need to be in place for the rest of the schedule to make sense. Please complete the workbook and save the finished file as an .xlsx.",
+  "prompt_cn": "这个工作簿是一份 Employee Shift Schedule，里面能看到 “Insert Company Name Here”、“Week Beginning:”、“Employee”、“Name 1”、“Name 2” 和 “Date” 等标签。Sheet2 中日程记录的 Date 列还空着，具体是 B4:B28，需要把这些日期补完整，让员工排班表内容连贯正确。相关的空白排班信息也请按表格本身需要的顺序补好，因为日期填好后，后面的排班内容才更清楚。请完成该工作簿，并将完成后的文件保存为 .xlsx 格式。",
+  "quality_notes": "The prompt identifies the workbook context, the target sheet and Date column range, and naturally mentions that related blanks may feed into the schedule without giving any operational or formula hints.",
+  "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": 59.1,
+  "attempt": 2
+}
\ No newline at end of file
diff --git a/FormulaCascade_Benchmark_eval_200/T3_MEDIUM/internal/FCB-04211/release_qc.json b/FormulaCascade_Benchmark_eval_200/T3_MEDIUM/internal/FCB-04211/release_qc.json
new file mode 100644
index 0000000000000000000000000000000000000000..86bfdf02c8ffa6095f1fb2e450896ad5a64c87fd
--- /dev/null
+++ b/FormulaCascade_Benchmark_eval_200/T3_MEDIUM/internal/FCB-04211/release_qc.json
@@ -0,0 +1,58 @@
+{
+  "binary": true,
+  "binary_reason": "CORRECT: The mask is clean, GT is consistent, and the masked date chain is reconstructible from the visible workbook context plus the NL hint, though the cross-sheet prerequisite is only indirectly described.",
+  "D1": {
+    "score": 5,
+    "reason": "All 26 masked cells are real cells within Sheet2's actual range, with no phantom references and no extra masked cells outside the contract. The prerequisite B3 is masked by design for depth=2 chain masking. There is no concerning pattern leakage or trivially copyable visible formula exemplar; the mask boundary is clean, and formula_cache_missing entries are only the known openpyxl cache artifact."
+  },
+  "D2": {
+    "score": 5,
+    "reason": "The GT formulas are simple deterministic date increments. Sheet2!B3 references the week-beginning date on Sheet1, and B4:B28 each add 1 to the previous row. Cached values from 2021-12-19 through 2022-01-12 are consistent with that sequence, assuming B3 is 2021-12-18. No ambiguity or formula inconsistency is evident."
+  },
+  "D3": {
+    "score": 4,
+    "reason": "The NL clearly identifies Sheet2 Date cells B4:B28 as needing completion and gives workbook context such as Employee Shift Schedule and Week Beginning. It is slightly indirect about the prerequisite B3 and the cross-sheet reference to Sheet1, using 'related blank schedule information' rather than explicitly naming B3 or Sheet1, but the request is still understandable."
+  },
+  "D4": {
+    "score": 4,
+    "reason": "Using only mask_last.xlsx plus the NL, the solver can see that Sheet2 has a Date column with B3:B28 blank and that the workbook contains a Week Beginning field on Sheet1. The natural reconstruction is to use the visible week-beginning date as the root date in B3, then fill B4:B28 as consecutive daily dates. There is no visible formula exemplar in the masked Date column, so this is not trivially copyable, but the structural clue is strong enough. The main minor gap is that the prompt does not explicitly say 'use Sheet1 week beginning' or 'increment by one day,' requiring reasonable schedule-layout inference.",
+    "d4_type": "ok"
+  },
+  "D5": {
+    "score": 5,
+    "reason": "The source spreadsheet appears structurally sound: formulas are coherent, deterministic, and non-circular; the Date column sequence is consistent; headers and labels such as Employee Shift Schedule, Week Beginning, Employee, and Date are meaningful. No broken formulas, corrupted values, or source-data anomalies are indicated."
+  },
+  "D6": {
+    "score": 4,
+    "reason": "The NL sounds mostly like a realistic workplace completion request for an employee schedule and avoids explicit benchmark jargon. It is somewhat verbose and includes exact cell references and save-format instruction, making it a bit task-like, but still natural overall."
+  },
+  "total": 27,
+  "verdict": "RELEASE",
+  "verdict_reason": "High-quality task with clean masking and correct GT. The only weakness is that the NL references the cross-sheet prerequisite indirectly, but the visible workbook context and Week Beginning label should provide enough evidence for a capable solver to reconstruct the chain.",
+  "frontier_hardness": {
+    "score": 2,
+    "reason": "This is a simple one-column date sequence with a single cross-sheet root reference and repeated +1 increments. A frontier model should likely infer the week-beginning root and fill the consecutive dates correctly. The chain is long in row count but not conceptually complex.",
+    "fail_reason": "easy",
+    "is_valid_hardness": false
+  },
+  "_prompt_chars": 10604,
+  "_timing_load_workbooks": 1.19,
+  "_timing_context": 0.01,
+  "_timing_api": 88.96,
+  "local_difficulty": {
+    "difficulty_score": 46.5,
+    "difficulty": "medium",
+    "depth": 2,
+    "total_masked": 26,
+    "is_cross_sheet": true,
+    "unique_patterns": 2,
+    "avg_complexity": 3,
+    "cross_refs": 0,
+    "visible_exemplar_ratio": 0.038
+  },
+  "task_id": "cross_sheet__dag_65b779084b70",
+  "elapsed": 90.2,
+  "publish_decision": "YES",
+  "release_tier": "GOLD",
+  "hard_block_reasons": []
+}
\ No newline at end of file
diff --git a/FormulaCascade_Benchmark_eval_200/T3_MEDIUM/internal/FCB-04211/src.xlsx b/FormulaCascade_Benchmark_eval_200/T3_MEDIUM/internal/FCB-04211/src.xlsx
new file mode 100644
index 0000000000000000000000000000000000000000..2518cd2f66eb87118a4da51ff21ef088415ade6d
Binary files /dev/null and b/FormulaCascade_Benchmark_eval_200/T3_MEDIUM/internal/FCB-04211/src.xlsx differ
diff --git a/FormulaCascade_Benchmark_eval_200/T3_MEDIUM/internal/FCB-04211/target_contract.json b/FormulaCascade_Benchmark_eval_200/T3_MEDIUM/internal/FCB-04211/target_contract.json
new file mode 100644
index 0000000000000000000000000000000000000000..60b894152d1905dc898ad6ba284ee025cc58c540
--- /dev/null
+++ b/FormulaCascade_Benchmark_eval_200/T3_MEDIUM/internal/FCB-04211/target_contract.json
@@ -0,0 +1,75 @@
+{
+  "task_id": "cross_sheet__dag_65b779084b70",
+  "category": "cross_sheet",
+  "depth": 2,
+  "final_target": {
+    "regions": [
+      {
+        "sheet": "Sheet2",
+        "column": "B",
+        "column_header": "Date",
+        "cell_range": "B4:B28",
+        "cell_count": 25,
+        "rows": [
+          4,
+          5,
+          6,
+          7,
+          8,
+          9,
+          10,
+          11,
+          12,
+          13,
+          14,
+          15,
+          16,
+          17,
+          18,
+          19,
+          20,
+          21,
+          22,
+          23,
+          24,
+          25,
+          26,
+          27,
+          28
+        ],
+        "first_row_label": "",
+        "last_row_label": ""
+      }
+    ],
+    "cell_count": 25,
+    "formula_families": [
+      "arithmetic"
+    ]
+  },
+  "prerequisite_steps": [
+    {
+      "layer": 2,
+      "regions": [
+        {
+          "sheet": "Sheet2",
+          "column": "B",
+          "column_header": "Date",
+          "cell_range": "B3",
+          "cell_count": 1,
+          "rows": [
+            3
+          ],
+          "first_row_label": "",
+          "last_row_label": ""
+        }
+      ],
+      "cell_count": 1
+    }
+  ],
+  "total_prerequisite_cells": 1,
+  "total_masked_cells": 26,
+  "ratio_total_vs_final": 1.0,
+  "sheets_involved": [
+    "Sheet2"
+  ]
+}
\ No newline at end of file
diff --git a/FormulaCascade_Benchmark_eval_200/T3_MEDIUM/internal/FCB-04211/task_meta.json b/FormulaCascade_Benchmark_eval_200/T3_MEDIUM/internal/FCB-04211/task_meta.json
new file mode 100644
index 0000000000000000000000000000000000000000..6a9b9bfff7c06df0bd47bca1a5b1e4d12c12435c
--- /dev/null
+++ b/FormulaCascade_Benchmark_eval_200/T3_MEDIUM/internal/FCB-04211/task_meta.json
@@ -0,0 +1,46 @@
+{
+  "fcb_id": "FCB-04211",
+  "task_id": "cross_sheet__dag_65b779084b70",
+  "tier": "T3_MEDIUM",
+  "category": "cross_sheet",
+  "depth": 2,
+  "total_masked": 26,
+  "is_cross_sheet": true,
+  "prompt_en": "The workbook is an Employee Shift Schedule with labels like “Insert Company Name Here,” “Week Beginning:,” “Employee,” “Name 1,” “Name 2,” and “Date.” On Sheet2, the Date column is still blank for the schedule entries, specifically cells B4:B28, and those dates need to be filled in so the employee schedule reads correctly. Any related blank schedule information should be settled in the natural order the sheet expects, since the date entries need to be in place for the rest of the schedule to make sense. Please complete the workbook and save the finished file as an .xlsx.",
+  "prompt_cn": "这个工作簿是一份 Employee Shift Schedule，里面能看到 “Insert Company Name Here”、“Week Beginning:”、“Employee”、“Name 1”、“Name 2” 和 “Date” 等标签。Sheet2 中日程记录的 Date 列还空着，具体是 B4:B28，需要把这些日期补完整，让员工排班表内容连贯正确。相关的空白排班信息也请按表格本身需要的顺序补好，因为日期填好后，后面的排班内容才更清楚。请完成该工作簿，并将完成后的文件保存为 .xlsx 格式。",
+  "qc": {
+    "total": 27,
+    "verdict": "RELEASE",
+    "D1": 5,
+    "D2": 5,
+    "D3": 4,
+    "D4": 4,
+    "D5": 5,
+    "D6": 4,
+    "frontier_hardness": 2,
+    "local_difficulty": 46.5
+  },
+  "source_file_id": "757579d1638348385-looking-for-a-formula-that-will-display-the-name-of-the-employee-available-shift-schedule-project",
+  "inferred_domain": "operations",
+  "domain_confidence": 0.5,
+  "sheet_profiles": [
+    {
+      "name": "Sheet1",
+      "used_range": "A1:AI108",
+      "row_count": 108,
+      "col_count": 35,
+      "has_header": false,
+      "title_hint": "Sheet1",
+      "header_info": null
+    },
+    {
+      "name": "Sheet2",
+      "used_range": "B2:B28",
+      "row_count": 27,
+      "col_count": 1,
+      "has_header": false,
+      "title_hint": "Sheet2",
+      "header_info": null
+    }
+  ]
+}
\ No newline at end of file
diff --git a/FormulaCascade_Benchmark_eval_200/T3_MEDIUM/internal/FCB-05604/audit.json b/FormulaCascade_Benchmark_eval_200/T3_MEDIUM/internal/FCB-05604/audit.json
new file mode 100644
index 0000000000000000000000000000000000000000..b34c1d7edea97c0f1f99a7e8c4098f4c36be5805
--- /dev/null
+++ b/FormulaCascade_Benchmark_eval_200/T3_MEDIUM/internal/FCB-05604/audit.json
@@ -0,0 +1,417 @@
+{
+  "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 30 cells"
+        },
+        {
+          "check": "header_grounding",
+          "pass": true,
+          "severity": "pass",
+          "detail": "1/1 final regions have column_header"
+        },
+        {
+          "check": "mask_consistency",
+          "pass": true,
+          "detail": "mask_last=16587B, src=23472B"
+        },
+        {
+          "check": "dirty_family",
+          "pass": true,
+          "detail": "0 dirty cells"
+        },
+        {
+          "check": "ratio_gate",
+          "pass": true,
+          "detail": "ratio=1.0 (total=31, final=30)"
+        },
+        {
+          "check": "dedup_gate",
+          "pass": true,
+          "detail": "0 duplicate cells across layers"
+        },
+        {
+          "check": "gt_uniqueness",
+          "pass": true,
+          "detail": "30 unique values across 30 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": "CLEAN",
+      "validate_pass": true,
+      "hard_fails": 0,
+      "soft_warns": 0,
+      "checks": [
+        {
+          "check": "cell_range_match",
+          "pass": true,
+          "detail": "contract=2, 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=1, 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 30 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 1 col groups"
+        },
+        {
+          "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 31 GT cells (0%)",
+          "severity": "OK"
+        }
+      ]
+    },
+    "pre_nl_local": {
+      "local_total": 55,
+      "local_label": "PENDING_NL",
+      "hard_fail_flags": [],
+      "warnings": [
+        "nl_missing"
+      ],
+      "local_subscores": {
+        "family_clean": 25,
+        "target_integrity": 15,
+        "taxonomy": 10,
+        "semantic_signal": 5,
+        "nl_schema": 0,
+        "target_alignment": 0,
+        "business_specificity": 0,
+        "nl_risk": 0
+      }
+    }
+  },
+  "verify": {
+    "uniqueness": {
+      "total_gt_cells": 31,
+      "total_non_none": 31,
+      "block_reasons": [],
+      "warnings": [],
+      "checks": {
+        "rank_tie_risk": {
+          "rank_cells": 0,
+          "tie_issues": 0,
+          "details": []
+        },
+        "trivial_gt": {
+          "issues": []
+        },
+        "gt_type_consistency": {
+          "types": {
+            "str": 31
+          },
+          "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": 31
+      }
+    },
+    "solver_visibility": {
+      "contract_cells": 31,
+      "total_masked": 31,
+      "total_visible": 206,
+      "depth": 2,
+      "block_reasons": [],
+      "warnings": [],
+      "checks": {
+        "broken_chains": {
+          "count": 0,
+          "checked": 31,
+          "details": []
+        },
+        "orphan_masks": {
+          "count": 0,
+          "details": []
+        },
+        "self_contained": {
+          "missing_sheets": []
+        }
+      }
+    },
+    "exemplar": {
+      "soft_block": true,
+      "block_reasons": [
+        "zero_exemplar:2_patterns"
+      ],
+      "checks": {
+        "pattern_coverage": {
+          "pass": false,
+          "total_gt_patterns": 2,
+          "total_src_patterns": 20,
+          "zero_exemplar_count": 2,
+          "low_exemplar_count": 0
+        },
+        "zero_exemplar_patterns": {
+          "pass": false,
+          "patterns": [
+            {
+              "pattern": "=REF+1",
+              "total_in_src": 30,
+              "sample_formula": "=A16+1"
+            },
+            {
+              "pattern": "=REF",
+              "total_in_src": 1,
+              "sample_formula": "=C4"
+            }
+          ]
+        },
+        "low_exemplar_patterns": {
+          "pass": true,
+          "patterns": []
+        },
+        "func_coverage": {
+          "reference": {
+            "total_masked": 1,
+            "visible_exemplars": 0
+          },
+          "arithmetic": {
+            "total_masked": 30,
+            "visible_exemplars": 68
+          }
+        }
+      }
+    },
+    "shortcut": {
+      "shortcut_risk": 0.0,
+      "flags": []
+    },
+    "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": [
+        30,
+        1
+      ],
+      "mask_last_total_cells": 31,
+      "layer_growth_ratios": [
+        0.0333
+      ],
+      "pattern_dominance_ratio": 0.9677,
+      "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_bae00a06d1ad",
+    "difficulty_score": 36.5,
+    "difficulty": "medium",
+    "depth": 2,
+    "total_masked": 31,
+    "is_cross_sheet": false,
+    "unique_patterns": 2,
+    "avg_complexity": 3.0,
+    "cross_refs": 0,
+    "visible_exemplar_ratio": 0.091,
+    "score_breakdown": {
+      "depth": 7,
+      "cross_sheet": 0,
+      "cell_count": 9.9,
+      "patterns": 6,
+      "complexity": 4.5,
+      "cross_refs": 0,
+      "vis_penalty": 9.1
+    }
+  }
+}
\ No newline at end of file
diff --git a/FormulaCascade_Benchmark_eval_200/T3_MEDIUM/internal/FCB-05604/ground_truth_full.json b/FormulaCascade_Benchmark_eval_200/T3_MEDIUM/internal/FCB-05604/ground_truth_full.json
new file mode 100644
index 0000000000000000000000000000000000000000..f887eee9b5dcb29434d5568e3ea649533b2bd559
--- /dev/null
+++ b/FormulaCascade_Benchmark_eval_200/T3_MEDIUM/internal/FCB-05604/ground_truth_full.json
@@ -0,0 +1,281 @@
+[
+  {
+    "sheet": "Sheet1",
+    "col": "A",
+    "row": 17,
+    "formula": "=A16+1",
+    "cached_value": "2001-09-02 00:00:00",
+    "pattern_id": "pf_0021",
+    "layer": 1
+  },
+  {
+    "sheet": "Sheet1",
+    "col": "A",
+    "row": 18,
+    "formula": "=A17+1",
+    "cached_value": "2001-09-03 00:00:00",
+    "pattern_id": "pf_0021",
+    "layer": 1
+  },
+  {
+    "sheet": "Sheet1",
+    "col": "A",
+    "row": 19,
+    "formula": "=A18+1",
+    "cached_value": "2001-09-04 00:00:00",
+    "pattern_id": "pf_0021",
+    "layer": 1
+  },
+  {
+    "sheet": "Sheet1",
+    "col": "A",
+    "row": 20,
+    "formula": "=A19+1",
+    "cached_value": "2001-09-05 00:00:00",
+    "pattern_id": "pf_0021",
+    "layer": 1
+  },
+  {
+    "sheet": "Sheet1",
+    "col": "A",
+    "row": 21,
+    "formula": "=A20+1",
+    "cached_value": "2001-09-06 00:00:00",
+    "pattern_id": "pf_0021",
+    "layer": 1
+  },
+  {
+    "sheet": "Sheet1",
+    "col": "A",
+    "row": 22,
+    "formula": "=A21+1",
+    "cached_value": "2001-09-07 00:00:00",
+    "pattern_id": "pf_0021",
+    "layer": 1
+  },
+  {
+    "sheet": "Sheet1",
+    "col": "A",
+    "row": 23,
+    "formula": "=A22+1",
+    "cached_value": "2001-09-08 00:00:00",
+    "pattern_id": "pf_0021",
+    "layer": 1
+  },
+  {
+    "sheet": "Sheet1",
+    "col": "A",
+    "row": 24,
+    "formula": "=A23+1",
+    "cached_value": "2001-09-09 00:00:00",
+    "pattern_id": "pf_0021",
+    "layer": 1
+  },
+  {
+    "sheet": "Sheet1",
+    "col": "A",
+    "row": 25,
+    "formula": "=A24+1",
+    "cached_value": "2001-09-10 00:00:00",
+    "pattern_id": "pf_0021",
+    "layer": 1
+  },
+  {
+    "sheet": "Sheet1",
+    "col": "A",
+    "row": 26,
+    "formula": "=A25+1",
+    "cached_value": "2001-09-11 00:00:00",
+    "pattern_id": "pf_0021",
+    "layer": 1
+  },
+  {
+    "sheet": "Sheet1",
+    "col": "A",
+    "row": 27,
+    "formula": "=A26+1",
+    "cached_value": "2001-09-12 00:00:00",
+    "pattern_id": "pf_0021",
+    "layer": 1
+  },
+  {
+    "sheet": "Sheet1",
+    "col": "A",
+    "row": 28,
+    "formula": "=A27+1",
+    "cached_value": "2001-09-13 00:00:00",
+    "pattern_id": "pf_0021",
+    "layer": 1
+  },
+  {
+    "sheet": "Sheet1",
+    "col": "A",
+    "row": 29,
+    "formula": "=A28+1",
+    "cached_value": "2001-09-14 00:00:00",
+    "pattern_id": "pf_0021",
+    "layer": 1
+  },
+  {
+    "sheet": "Sheet1",
+    "col": "A",
+    "row": 30,
+    "formula": "=A29+1",
+    "cached_value": "2001-09-15 00:00:00",
+    "pattern_id": "pf_0021",
+    "layer": 1
+  },
+  {
+    "sheet": "Sheet1",
+    "col": "A",
+    "row": 31,
+    "formula": "=A30+1",
+    "cached_value": "2001-09-16 00:00:00",
+    "pattern_id": "pf_0021",
+    "layer": 1
+  },
+  {
+    "sheet": "Sheet1",
+    "col": "A",
+    "row": 32,
+    "formula": "=A31+1",
+    "cached_value": "2001-09-17 00:00:00",
+    "pattern_id": "pf_0021",
+    "layer": 1
+  },
+  {
+    "sheet": "Sheet1",
+    "col": "A",
+    "row": 33,
+    "formula": "=A32+1",
+    "cached_value": "2001-09-18 00:00:00",
+    "pattern_id": "pf_0021",
+    "layer": 1
+  },
+  {
+    "sheet": "Sheet1",
+    "col": "A",
+    "row": 34,
+    "formula": "=A33+1",
+    "cached_value": "2001-09-19 00:00:00",
+    "pattern_id": "pf_0021",
+    "layer": 1
+  },
+  {
+    "sheet": "Sheet1",
+    "col": "A",
+    "row": 35,
+    "formula": "=A34+1",
+    "cached_value": "2001-09-20 00:00:00",
+    "pattern_id": "pf_0021",
+    "layer": 1
+  },
+  {
+    "sheet": "Sheet1",
+    "col": "A",
+    "row": 36,
+    "formula": "=A35+1",
+    "cached_value": "2001-09-21 00:00:00",
+    "pattern_id": "pf_0021",
+    "layer": 1
+  },
+  {
+    "sheet": "Sheet1",
+    "col": "A",
+    "row": 37,
+    "formula": "=A36+1",
+    "cached_value": "2001-09-22 00:00:00",
+    "pattern_id": "pf_0021",
+    "layer": 1
+  },
+  {
+    "sheet": "Sheet1",
+    "col": "A",
+    "row": 38,
+    "formula": "=A37+1",
+    "cached_value": "2001-09-23 00:00:00",
+    "pattern_id": "pf_0021",
+    "layer": 1
+  },
+  {
+    "sheet": "Sheet1",
+    "col": "A",
+    "row": 39,
+    "formula": "=A38+1",
+    "cached_value": "2001-09-24 00:00:00",
+    "pattern_id": "pf_0021",
+    "layer": 1
+  },
+  {
+    "sheet": "Sheet1",
+    "col": "A",
+    "row": 40,
+    "formula": "=A39+1",
+    "cached_value": "2001-09-25 00:00:00",
+    "pattern_id": "pf_0021",
+    "layer": 1
+  },
+  {
+    "sheet": "Sheet1",
+    "col": "A",
+    "row": 41,
+    "formula": "=A40+1",
+    "cached_value": "2001-09-26 00:00:00",
+    "pattern_id": "pf_0021",
+    "layer": 1
+  },
+  {
+    "sheet": "Sheet1",
+    "col": "A",
+    "row": 42,
+    "formula": "=A41+1",
+    "cached_value": "2001-09-27 00:00:00",
+    "pattern_id": "pf_0021",
+    "layer": 1
+  },
+  {
+    "sheet": "Sheet1",
+    "col": "A",
+    "row": 43,
+    "formula": "=A42+1",
+    "cached_value": "2001-09-28 00:00:00",
+    "pattern_id": "pf_0021",
+    "layer": 1
+  },
+  {
+    "sheet": "Sheet1",
+    "col": "A",
+    "row": 44,
+    "formula": "=A43+1",
+    "cached_value": "2001-09-29 00:00:00",
+    "pattern_id": "pf_0021",
+    "layer": 1
+  },
+  {
+    "sheet": "Sheet1",
+    "col": "A",
+    "row": 45,
+    "formula": "=A44+1",
+    "cached_value": "2001-09-30 00:00:00",
+    "pattern_id": "pf_0021",
+    "layer": 1
+  },
+  {
+    "sheet": "Sheet1",
+    "col": "A",
+    "row": 46,
+    "formula": "=A45+1",
+    "cached_value": "2001-10-01 00:00:00",
+    "pattern_id": "pf_0021",
+    "layer": 1
+  },
+  {
+    "sheet": "Sheet1",
+    "col": "A",
+    "row": 16,
+    "formula": "=C4",
+    "cached_value": "2001-09-01 00:00:00",
+    "pattern_id": "pf_0026",
+    "layer": 2
+  }
+]
\ No newline at end of file
diff --git a/FormulaCascade_Benchmark_eval_200/T3_MEDIUM/internal/FCB-05604/ground_truth_target.json b/FormulaCascade_Benchmark_eval_200/T3_MEDIUM/internal/FCB-05604/ground_truth_target.json
new file mode 100644
index 0000000000000000000000000000000000000000..a654b54f39f91a479921b5820ed7b662aed1366f
--- /dev/null
+++ b/FormulaCascade_Benchmark_eval_200/T3_MEDIUM/internal/FCB-05604/ground_truth_target.json
@@ -0,0 +1,242 @@
+[
+  {
+    "sheet": "Sheet1",
+    "col": "A",
+    "row": 17,
+    "formula": "=A16+1",
+    "cached_value": "2001-09-02 00:00:00",
+    "pattern_id": "pf_0021"
+  },
+  {
+    "sheet": "Sheet1",
+    "col": "A",
+    "row": 18,
+    "formula": "=A17+1",
+    "cached_value": "2001-09-03 00:00:00",
+    "pattern_id": "pf_0021"
+  },
+  {
+    "sheet": "Sheet1",
+    "col": "A",
+    "row": 19,
+    "formula": "=A18+1",
+    "cached_value": "2001-09-04 00:00:00",
+    "pattern_id": "pf_0021"
+  },
+  {
+    "sheet": "Sheet1",
+    "col": "A",
+    "row": 20,
+    "formula": "=A19+1",
+    "cached_value": "2001-09-05 00:00:00",
+    "pattern_id": "pf_0021"
+  },
+  {
+    "sheet": "Sheet1",
+    "col": "A",
+    "row": 21,
+    "formula": "=A20+1",
+    "cached_value": "2001-09-06 00:00:00",
+    "pattern_id": "pf_0021"
+  },
+  {
+    "sheet": "Sheet1",
+    "col": "A",
+    "row": 22,
+    "formula": "=A21+1",
+    "cached_value": "2001-09-07 00:00:00",
+    "pattern_id": "pf_0021"
+  },
+  {
+    "sheet": "Sheet1",
+    "col": "A",
+    "row": 23,
+    "formula": "=A22+1",
+    "cached_value": "2001-09-08 00:00:00",
+    "pattern_id": "pf_0021"
+  },
+  {
+    "sheet": "Sheet1",
+    "col": "A",
+    "row": 24,
+    "formula": "=A23+1",
+    "cached_value": "2001-09-09 00:00:00",
+    "pattern_id": "pf_0021"
+  },
+  {
+    "sheet": "Sheet1",
+    "col": "A",
+    "row": 25,
+    "formula": "=A24+1",
+    "cached_value": "2001-09-10 00:00:00",
+    "pattern_id": "pf_0021"
+  },
+  {
+    "sheet": "Sheet1",
+    "col": "A",
+    "row": 26,
+    "formula": "=A25+1",
+    "cached_value": "2001-09-11 00:00:00",
+    "pattern_id": "pf_0021"
+  },
+  {
+    "sheet": "Sheet1",
+    "col": "A",
+    "row": 27,
+    "formula": "=A26+1",
+    "cached_value": "2001-09-12 00:00:00",
+    "pattern_id": "pf_0021"
+  },
+  {
+    "sheet": "Sheet1",
+    "col": "A",
+    "row": 28,
+    "formula": "=A27+1",
+    "cached_value": "2001-09-13 00:00:00",
+    "pattern_id": "pf_0021"
+  },
+  {
+    "sheet": "Sheet1",
+    "col": "A",
+    "row": 29,
+    "formula": "=A28+1",
+    "cached_value": "2001-09-14 00:00:00",
+    "pattern_id": "pf_0021"
+  },
+  {
+    "sheet": "Sheet1",
+    "col": "A",
+    "row": 30,
+    "formula": "=A29+1",
+    "cached_value": "2001-09-15 00:00:00",
+    "pattern_id": "pf_0021"
+  },
+  {
+    "sheet": "Sheet1",
+    "col": "A",
+    "row": 31,
+    "formula": "=A30+1",
+    "cached_value": "2001-09-16 00:00:00",
+    "pattern_id": "pf_0021"
+  },
+  {
+    "sheet": "Sheet1",
+    "col": "A",
+    "row": 32,
+    "formula": "=A31+1",
+    "cached_value": "2001-09-17 00:00:00",
+    "pattern_id": "pf_0021"
+  },
+  {
+    "sheet": "Sheet1",
+    "col": "A",
+    "row": 33,
+    "formula": "=A32+1",
+    "cached_value": "2001-09-18 00:00:00",
+    "pattern_id": "pf_0021"
+  },
+  {
+    "sheet": "Sheet1",
+    "col": "A",
+    "row": 34,
+    "formula": "=A33+1",
+    "cached_value": "2001-09-19 00:00:00",
+    "pattern_id": "pf_0021"
+  },
+  {
+    "sheet": "Sheet1",
+    "col": "A",
+    "row": 35,
+    "formula": "=A34+1",
+    "cached_value": "2001-09-20 00:00:00",
+    "pattern_id": "pf_0021"
+  },
+  {
+    "sheet": "Sheet1",
+    "col": "A",
+    "row": 36,
+    "formula": "=A35+1",
+    "cached_value": "2001-09-21 00:00:00",
+    "pattern_id": "pf_0021"
+  },
+  {
+    "sheet": "Sheet1",
+    "col": "A",
+    "row": 37,
+    "formula": "=A36+1",
+    "cached_value": "2001-09-22 00:00:00",
+    "pattern_id": "pf_0021"
+  },
+  {
+    "sheet": "Sheet1",
+    "col": "A",
+    "row": 38,
+    "formula": "=A37+1",
+    "cached_value": "2001-09-23 00:00:00",
+    "pattern_id": "pf_0021"
+  },
+  {
+    "sheet": "Sheet1",
+    "col": "A",
+    "row": 39,
+    "formula": "=A38+1",
+    "cached_value": "2001-09-24 00:00:00",
+    "pattern_id": "pf_0021"
+  },
+  {
+    "sheet": "Sheet1",
+    "col": "A",
+    "row": 40,
+    "formula": "=A39+1",
+    "cached_value": "2001-09-25 00:00:00",
+    "pattern_id": "pf_0021"
+  },
+  {
+    "sheet": "Sheet1",
+    "col": "A",
+    "row": 41,
+    "formula": "=A40+1",
+    "cached_value": "2001-09-26 00:00:00",
+    "pattern_id": "pf_0021"
+  },
+  {
+    "sheet": "Sheet1",
+    "col": "A",
+    "row": 42,
+    "formula": "=A41+1",
+    "cached_value": "2001-09-27 00:00:00",
+    "pattern_id": "pf_0021"
+  },
+  {
+    "sheet": "Sheet1",
+    "col": "A",
+    "row": 43,
+    "formula": "=A42+1",
+    "cached_value": "2001-09-28 00:00:00",
+    "pattern_id": "pf_0021"
+  },
+  {
+    "sheet": "Sheet1",
+    "col": "A",
+    "row": 44,
+    "formula": "=A43+1",
+    "cached_value": "2001-09-29 00:00:00",
+    "pattern_id": "pf_0021"
+  },
+  {
+    "sheet": "Sheet1",
+    "col": "A",
+    "row": 45,
+    "formula": "=A44+1",
+    "cached_value": "2001-09-30 00:00:00",
+    "pattern_id": "pf_0021"
+  },
+  {
+    "sheet": "Sheet1",
+    "col": "A",
+    "row": 46,
+    "formula": "=A45+1",
+    "cached_value": "2001-10-01 00:00:00",
+    "pattern_id": "pf_0021"
+  }
+]
\ No newline at end of file
diff --git a/FormulaCascade_Benchmark_eval_200/T3_MEDIUM/internal/FCB-05604/layers.json b/FormulaCascade_Benchmark_eval_200/T3_MEDIUM/internal/FCB-05604/layers.json
new file mode 100644
index 0000000000000000000000000000000000000000..336022bce0eee7a1476beaaa6ee49213a4c0e6f6
--- /dev/null
+++ b/FormulaCascade_Benchmark_eval_200/T3_MEDIUM/internal/FCB-05604/layers.json
@@ -0,0 +1,96 @@
+{
+  "dag_id": "dag_bae00a06d1ad",
+  "file_id": "kim_ward__20680__September 01",
+  "category": "single_sheet",
+  "surface_category": "single_sheet",
+  "effective_category": "single_sheet",
+  "depth": 2,
+  "quality": {
+    "chain_error_cells": 0,
+    "chain_external_cells": 0,
+    "is_clean": true
+  },
+  "layers": [
+    {
+      "layer_index": 1,
+      "new_pattern_groups": [
+        {
+          "region_ids": [
+            "rg_00021"
+          ],
+          "sheet": "Sheet1",
+          "col": "A",
+          "rows": [
+            17,
+            18,
+            19,
+            20,
+            21,
+            22,
+            23,
+            24,
+            25,
+            26,
+            27,
+            28,
+            29,
+            30,
+            31,
+            32,
+            33,
+            34,
+            35,
+            36,
+            37,
+            38,
+            39,
+            40,
+            41,
+            42,
+            43,
+            44,
+            45,
+            46
+          ],
+          "row_ranges": "17-46",
+          "row_count": 30,
+          "pattern_id": "pf_0021",
+          "normalized_pattern": "=[C,R-1]+1",
+          "sample_formula": "=A16+1"
+        }
+      ],
+      "new_eval_cells": 30,
+      "total_masked_cells": 30
+    },
+    {
+      "layer_index": 2,
+      "new_pattern_groups": [
+        {
+          "region_ids": [
+            "rg_00044"
+          ],
+          "sheet": "Sheet1",
+          "col": "A",
+          "rows": [
+            16
+          ],
+          "row_ranges": "16",
+          "row_count": 1,
+          "pattern_id": "pf_0026",
+          "normalized_pattern": "=[C+2,R-12]",
+          "sample_formula": "=C4"
+        }
+      ],
+      "new_eval_cells": 1,
+      "total_masked_cells": 31
+    }
+  ],
+  "sink": {
+    "region_id": "rg_00021",
+    "sheet": "Sheet1",
+    "col": "A",
+    "pattern_id": "pf_0021",
+    "row_count": 30,
+    "family_size": 30
+  }
+}
\ No newline at end of file
diff --git a/FormulaCascade_Benchmark_eval_200/T3_MEDIUM/internal/FCB-05604/mask_last.xlsx b/FormulaCascade_Benchmark_eval_200/T3_MEDIUM/internal/FCB-05604/mask_last.xlsx
new file mode 100644
index 0000000000000000000000000000000000000000..ccd3d8328cf79a73a194a2bd8cc13d1e7b976db3
Binary files /dev/null and b/FormulaCascade_Benchmark_eval_200/T3_MEDIUM/internal/FCB-05604/mask_last.xlsx differ
diff --git a/FormulaCascade_Benchmark_eval_200/T3_MEDIUM/internal/FCB-05604/nl_task.json b/FormulaCascade_Benchmark_eval_200/T3_MEDIUM/internal/FCB-05604/nl_task.json
new file mode 100644
index 0000000000000000000000000000000000000000..20b578c5d7b1ab495717bc50676f0b4632ff9851
--- /dev/null
+++ b/FormulaCascade_Benchmark_eval_200/T3_MEDIUM/internal/FCB-05604/nl_task.json
@@ -0,0 +1,26 @@
+{
+  "task_id": "single_sheet__dag_bae00a06d1ad",
+  "prompt_en": "The Sheet1 table for “Citizens Utilities- Griffith Plant Deliveries” is set up around the Inputs section, with labels like Delivery Month, Delivery Demand Quantity (DDQ), Transportation (San Juan Lateral), and Reservation Charge. Please fill in the missing entries in the Date column on Sheet1, specifically the monthly Date cells in A17:A46. The Date entries belong with the rest of the monthly delivery information, so make sure any related blank monthly fields in that section are in place before the Date column is finalized. Save the completed workbook as an .xlsx file.",
+  "prompt_cn": "Sheet1 中的“Citizens Utilities- Griffith Plant Deliveries”表格围绕 Inputs 部分整理，里面能看到 Delivery Month、Delivery Demand Quantity (DDQ)、Transportation (San Juan Lateral) 和 Reservation Charge 等标签。请补全 Sheet1 的 Date 列中缺失的内容，具体是 A17:A46 这些月度 Date 单元格。Date 条目是月度交付信息的一部分，因此在最终填写 Date 列之前，请确保该区域中相关的空白月度字段也已对应补齐。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 the specified Sheet1 Date range, avoids formulas and operation hints, and includes a natural prerequisite note without describing a dependency chain.",
+  "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": 65.3,
+  "attempt": 2
+}
\ No newline at end of file
diff --git a/FormulaCascade_Benchmark_eval_200/T3_MEDIUM/internal/FCB-05604/release_qc.json b/FormulaCascade_Benchmark_eval_200/T3_MEDIUM/internal/FCB-05604/release_qc.json
new file mode 100644
index 0000000000000000000000000000000000000000..4dd3920125787daaa15239c686b2c430d078500d
--- /dev/null
+++ b/FormulaCascade_Benchmark_eval_200/T3_MEDIUM/internal/FCB-05604/release_qc.json
@@ -0,0 +1,57 @@
+{
+  "binary": true,
+  "binary_reason": "CORRECT: the mask is clean and the date-chain can be reconstructed from the visible input structure, though the NL wording is somewhat imprecise.",
+  "D1": {
+    "score": 5,
+    "reason": "All 31 masked cells are real in-sheet cells within the actual data range, matching the contract exactly. The diff summary shows 31 truly masked contract cells, 0 unmasked contract cells, and 0 extra masked cells. Formula-cache loss is correctly just an openpyxl artifact. There is no problematic leakage making the task trivially copyable."
+  },
+  "D2": {
+    "score": 5,
+    "reason": "The ground-truth formulas are internally consistent: A16 is the starting date reference, and A17:A46 increment the prior row by one day. Cached values align with the formulas shown, e.g. A17 = A16 + 1 gives 2001-09-02 and the sequence continues deterministically through 2001-10-01."
+  },
+  "D3": {
+    "score": 4,
+    "reason": "The prompt identifies Sheet1 and explicitly names the target Date range A17:A46. It also hints that related monthly fields/prerequisites should be filled before finalizing. However, it calls the entries 'monthly Date cells' even though the actual series is daily, and it does not explicitly name A16 as the prerequisite, so clarity is good but not perfect."
+  },
+  "D4": {
+    "score": 4,
+    "reason": "From mask_last.xlsx plus the NL prompt, the solver can see the Date column, the daily delivery table structure, adjacent visible delivery-volume rows, and the Inputs context including the Delivery Month concept. The missing A16 starting date can reasonably be tied to the visible Delivery Month input, and A17:A46 can then be inferred as a one-day sequential date series. There is a minor inference gap because no unmasked Date-column exemplar is visible in the shown target block, but the dependency chain is still reconstructible from the table structure and prompt.",
+    "d4_type": "ok"
+  },
+  "D5": {
+    "score": 5,
+    "reason": "The source spreadsheet appears sound: formulas are consistent, deterministic, and refer to valid in-sheet cells; no circular references, broken references, or corrupted values are evident. Headers are meaningful for the delivery schedule, aside from a minor spelling typo in 'Reciept', which does not affect data quality."
+  },
+  "D6": {
+    "score": 4,
+    "reason": "The NL reads like a plausible workplace request and avoids benchmark jargon. It is slightly wordy and somewhat unnatural in the phrase 'make sure any related blank monthly fields in that section are in place,' but overall it is natural enough."
+  },
+  "total": 27,
+  "verdict": "RELEASE",
+  "verdict_reason": "High-quality task with a clean mask, correct GT, and sufficient evidence for reconstruction. Minor NL imprecision does not materially undermine solvability.",
+  "frontier_hardness": {
+    "score": 2,
+    "reason": "This is a short single-sheet dependency chain with one main sequential-date pattern plus a starting-date prerequisite. There are no cross-sheet references, no complex interacting columns, and no hidden hardcoded constants beyond identifying the visible delivery-month input. A frontier model should likely solve it.",
+    "fail_reason": "easy",
+    "is_valid_hardness": false
+  },
+  "_prompt_chars": 26957,
+  "local_difficulty": {
+    "difficulty_score": 36.5,
+    "difficulty": "medium",
+    "depth": 2,
+    "total_masked": 31,
+    "is_cross_sheet": false,
+    "unique_patterns": 2,
+    "avg_complexity": 3,
+    "cross_refs": 0,
+    "visible_exemplar_ratio": 0.091
+  },
+  "_timing_context": 95.7,
+  "_timing_api": 22.8,
+  "task_id": "single_sheet__dag_bae00a06d1ad",
+  "elapsed": 118.6,
+  "publish_decision": "YES",
+  "release_tier": "GOLD",
+  "hard_block_reasons": []
+}
\ No newline at end of file
diff --git a/FormulaCascade_Benchmark_eval_200/T3_MEDIUM/internal/FCB-05604/target_contract.json b/FormulaCascade_Benchmark_eval_200/T3_MEDIUM/internal/FCB-05604/target_contract.json
new file mode 100644
index 0000000000000000000000000000000000000000..2c77136f367d7bb6f874ca93f1e99cbb8a54781a
--- /dev/null
+++ b/FormulaCascade_Benchmark_eval_200/T3_MEDIUM/internal/FCB-05604/target_contract.json
@@ -0,0 +1,80 @@
+{
+  "task_id": "single_sheet__dag_bae00a06d1ad",
+  "category": "single_sheet",
+  "depth": 2,
+  "final_target": {
+    "regions": [
+      {
+        "sheet": "Sheet1",
+        "column": "A",
+        "column_header": "Date",
+        "cell_range": "A17:A46",
+        "cell_count": 30,
+        "rows": [
+          17,
+          18,
+          19,
+          20,
+          21,
+          22,
+          23,
+          24,
+          25,
+          26,
+          27,
+          28,
+          29,
+          30,
+          31,
+          32,
+          33,
+          34,
+          35,
+          36,
+          37,
+          38,
+          39,
+          40,
+          41,
+          42,
+          43,
+          44,
+          45,
+          46
+        ],
+        "first_row_label": "",
+        "last_row_label": ""
+      }
+    ],
+    "cell_count": 30,
+    "formula_families": [
+      "arithmetic"
+    ]
+  },
+  "prerequisite_steps": [
+    {
+      "layer": 2,
+      "regions": [
+        {
+          "sheet": "Sheet1",
+          "column": "A",
+          "column_header": "Date",
+          "cell_range": "A16",
+          "cell_count": 1,
+          "rows": [
+            16
+          ],
+          "first_row_label": "",
+          "last_row_label": ""
+        }
+      ],
+      "cell_count": 1
+    }
+  ],
+  "total_prerequisite_cells": 1,
+  "total_masked_cells": 31,
+  "ratio_total_vs_final": 1.0,
+  "sheets_involved": [
+    "Sheet1"
+  ]
+}
\ No newline at end of file
diff --git a/FormulaCascade_Benchmark_eval_200/T3_MEDIUM/internal/FCB-05604/task_meta.json b/FormulaCascade_Benchmark_eval_200/T3_MEDIUM/internal/FCB-05604/task_meta.json
new file mode 100644
index 0000000000000000000000000000000000000000..e05b6c46fa5b1870e8c1707fb6e61bc3613f9482
--- /dev/null
+++ b/FormulaCascade_Benchmark_eval_200/T3_MEDIUM/internal/FCB-05604/task_meta.json
@@ -0,0 +1,37 @@
+{
+  "fcb_id": "FCB-05604",
+  "task_id": "single_sheet__dag_bae00a06d1ad",
+  "tier": "T3_MEDIUM",
+  "category": "single_sheet",
+  "depth": 2,
+  "total_masked": 31,
+  "is_cross_sheet": false,
+  "prompt_en": "The Sheet1 table for “Citizens Utilities- Griffith Plant Deliveries” is set up around the Inputs section, with labels like Delivery Month, Delivery Demand Quantity (DDQ), Transportation (San Juan Lateral), and Reservation Charge. Please fill in the missing entries in the Date column on Sheet1, specifically the monthly Date cells in A17:A46. The Date entries belong with the rest of the monthly delivery information, so make sure any related blank monthly fields in that section are in place before the Date column is finalized. Save the completed workbook as an .xlsx file.",
+  "prompt_cn": "Sheet1 中的“Citizens Utilities- Griffith Plant Deliveries”表格围绕 Inputs 部分整理，里面能看到 Delivery Month、Delivery Demand Quantity (DDQ)、Transportation (San Juan Lateral) 和 Reservation Charge 等标签。请补全 Sheet1 的 Date 列中缺失的内容，具体是 A17:A46 这些月度 Date 单元格。Date 条目是月度交付信息的一部分，因此在最终填写 Date 列之前，请确保该区域中相关的空白月度字段也已对应补齐。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": 36.5
+  },
+  "source_file_id": "kim_ward__20680__September 01",
+  "inferred_domain": "operations",
+  "domain_confidence": 0.25,
+  "sheet_profiles": [
+    {
+      "name": "Sheet1",
+      "used_range": "A1:AD49",
+      "row_count": 49,
+      "col_count": 30,
+      "has_header": false,
+      "title_hint": "Sheet1",
+      "header_info": null
+    }
+  ]
+}
\ No newline at end of file
diff --git a/FormulaCascade_Benchmark_eval_200/T3_MEDIUM/internal/FCB-05689/audit.json b/FormulaCascade_Benchmark_eval_200/T3_MEDIUM/internal/FCB-05689/audit.json
new file mode 100644
index 0000000000000000000000000000000000000000..72213ba93a47ed0e154b3793c9cd5a27c4674601
--- /dev/null
+++ b/FormulaCascade_Benchmark_eval_200/T3_MEDIUM/internal/FCB-05689/audit.json
@@ -0,0 +1,407 @@
+{
+  "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 14 cells"
+        },
+        {
+          "check": "header_grounding",
+          "pass": true,
+          "severity": "pass",
+          "detail": "1/1 final regions have column_header"
+        },
+        {
+          "check": "mask_consistency",
+          "pass": true,
+          "detail": "mask_last=159842B, src=183717B"
+        },
+        {
+          "check": "dirty_family",
+          "pass": true,
+          "detail": "0 dirty cells"
+        },
+        {
+          "check": "ratio_gate",
+          "pass": true,
+          "detail": "ratio=1.1 (total=15, final=14)"
+        },
+        {
+          "check": "dedup_gate",
+          "pass": true,
+          "detail": "0 duplicate cells across layers"
+        },
+        {
+          "check": "gt_uniqueness",
+          "pass": true,
+          "detail": "14 unique values across 14 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: MANPOWER!A→FABRICATION!A(14/14), SHEAR!A→FABRICATION!A(14/14), WELDING!A→FABRICATION!A(12/14), PACKING!A→FABRICATION!A(14/14), SHEETING!A→FABRICATION!A(14/14)"
+        },
+        {
+          "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=2, 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=1, no explicit steps found (v5 natural format)",
+          "severity": "OK"
+        },
+        {
+          "check": "sheet_name_match",
+          "pass": true,
+          "detail": "contract=['FABRICATION'], 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 14 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 1 col groups"
+        },
+        {
+          "check": "nl_gt_operation_consistency",
+          "pass": true,
+          "detail": "GT funcs: ['IF']",
+          "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": 55,
+      "local_label": "PENDING_NL",
+      "hard_fail_flags": [],
+      "warnings": [
+        "nl_missing"
+      ],
+      "local_subscores": {
+        "family_clean": 25,
+        "target_integrity": 15,
+        "taxonomy": 10,
+        "semantic_signal": 5,
+        "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": {
+            "int": 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": 1897,
+      "depth": 2,
+      "block_reasons": [],
+      "warnings": [],
+      "checks": {
+        "broken_chains": {
+          "count": 0,
+          "checked": 15,
+          "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": 17,
+          "zero_exemplar_count": 0,
+          "low_exemplar_count": 0
+        },
+        "zero_exemplar_patterns": {
+          "pass": true,
+          "patterns": []
+        },
+        "low_exemplar_patterns": {
+          "pass": true,
+          "patterns": []
+        },
+        "func_coverage": {
+          "IF": {
+            "total_masked": 15,
+            "visible_exemplars": 8383
+          }
+        }
+      }
+    },
+    "shortcut": {
+      "shortcut_risk": 0.5,
+      "flags": [
+        {
+          "code": "SC2",
+          "description": "Arithmetic sequence in FABRICATION!A: step=1",
+          "affected_cells": 14,
+          "severity": "medium"
+        }
+      ]
+    },
+    "release_audit": {
+      "surface_single_sheet": true,
+      "surface_sheets": [
+        "FABRICATION"
+      ],
+      "cross_sheet_actual": false,
+      "cross_sheet_ref_count": 0,
+      "referenced_sheets": [],
+      "target_shape": "single_column_series",
+      "layer_sizes": [
+        14,
+        1
+      ],
+      "mask_last_total_cells": 15,
+      "layer_growth_ratios": [
+        0.0714
+      ],
+      "pattern_dominance_ratio": 0.9333,
+      "visible_clone_regions": 16,
+      "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_c92b7327c88d",
+    "difficulty_score": 38.6,
+    "difficulty": "medium",
+    "depth": 2,
+    "total_masked": 15,
+    "is_cross_sheet": false,
+    "unique_patterns": 2,
+    "avg_complexity": 6.0,
+    "cross_refs": 0,
+    "visible_exemplar_ratio": 0.125,
+    "score_breakdown": {
+      "depth": 7,
+      "cross_sheet": 0,
+      "cell_count": 7.8,
+      "patterns": 6,
+      "complexity": 9.0,
+      "cross_refs": 0,
+      "vis_penalty": 8.8
+    }
+  }
+}
\ No newline at end of file
diff --git a/FormulaCascade_Benchmark_eval_200/T3_MEDIUM/internal/FCB-05689/ground_truth_full.json b/FormulaCascade_Benchmark_eval_200/T3_MEDIUM/internal/FCB-05689/ground_truth_full.json
new file mode 100644
index 0000000000000000000000000000000000000000..99f28894e5d9e254221bea9fae5390fe74dbeffe
--- /dev/null
+++ b/FormulaCascade_Benchmark_eval_200/T3_MEDIUM/internal/FCB-05689/ground_truth_full.json
@@ -0,0 +1,137 @@
+[
+  {
+    "sheet": "FABRICATION",
+    "col": "A",
+    "row": 4,
+    "formula": "=IF(B4=0,0,A3+1)",
+    "cached_value": 2,
+    "pattern_id": "pf_0013",
+    "layer": 1
+  },
+  {
+    "sheet": "FABRICATION",
+    "col": "A",
+    "row": 5,
+    "formula": "=IF(B5=0,0,A4+1)",
+    "cached_value": 3,
+    "pattern_id": "pf_0013",
+    "layer": 1
+  },
+  {
+    "sheet": "FABRICATION",
+    "col": "A",
+    "row": 6,
+    "formula": "=IF(B6=0,0,A5+1)",
+    "cached_value": 4,
+    "pattern_id": "pf_0013",
+    "layer": 1
+  },
+  {
+    "sheet": "FABRICATION",
+    "col": "A",
+    "row": 7,
+    "formula": "=IF(B7=0,0,A6+1)",
+    "cached_value": 5,
+    "pattern_id": "pf_0013",
+    "layer": 1
+  },
+  {
+    "sheet": "FABRICATION",
+    "col": "A",
+    "row": 8,
+    "formula": "=IF(B8=0,0,A7+1)",
+    "cached_value": 6,
+    "pattern_id": "pf_0013",
+    "layer": 1
+  },
+  {
+    "sheet": "FABRICATION",
+    "col": "A",
+    "row": 9,
+    "formula": "=IF(B9=0,0,A8+1)",
+    "cached_value": 7,
+    "pattern_id": "pf_0013",
+    "layer": 1
+  },
+  {
+    "sheet": "FABRICATION",
+    "col": "A",
+    "row": 10,
+    "formula": "=IF(B10=0,0,A9+1)",
+    "cached_value": 8,
+    "pattern_id": "pf_0013",
+    "layer": 1
+  },
+  {
+    "sheet": "FABRICATION",
+    "col": "A",
+    "row": 11,
+    "formula": "=IF(B11=0,0,A10+1)",
+    "cached_value": 9,
+    "pattern_id": "pf_0013",
+    "layer": 1
+  },
+  {
+    "sheet": "FABRICATION",
+    "col": "A",
+    "row": 12,
+    "formula": "=IF(B12=0,0,A11+1)",
+    "cached_value": 10,
+    "pattern_id": "pf_0013",
+    "layer": 1
+  },
+  {
+    "sheet": "FABRICATION",
+    "col": "A",
+    "row": 13,
+    "formula": "=IF(B13=0,0,A12+1)",
+    "cached_value": 11,
+    "pattern_id": "pf_0013",
+    "layer": 1
+  },
+  {
+    "sheet": "FABRICATION",
+    "col": "A",
+    "row": 14,
+    "formula": "=IF(B14=0,0,A13+1)",
+    "cached_value": 12,
+    "pattern_id": "pf_0013",
+    "layer": 1
+  },
+  {
+    "sheet": "FABRICATION",
+    "col": "A",
+    "row": 15,
+    "formula": "=IF(B15=0,0,A14+1)",
+    "cached_value": 13,
+    "pattern_id": "pf_0013",
+    "layer": 1
+  },
+  {
+    "sheet": "FABRICATION",
+    "col": "A",
+    "row": 16,
+    "formula": "=IF(B16=0,0,A15+1)",
+    "cached_value": 14,
+    "pattern_id": "pf_0013",
+    "layer": 1
+  },
+  {
+    "sheet": "FABRICATION",
+    "col": "A",
+    "row": 17,
+    "formula": "=IF(B17=0,0,A16+1)",
+    "cached_value": 15,
+    "pattern_id": "pf_0013",
+    "layer": 1
+  },
+  {
+    "sheet": "FABRICATION",
+    "col": "A",
+    "row": 3,
+    "formula": "=IF(B3=0,0,1)",
+    "cached_value": 1,
+    "pattern_id": "pf_0051",
+    "layer": 2
+  }
+]
\ No newline at end of file
diff --git a/FormulaCascade_Benchmark_eval_200/T3_MEDIUM/internal/FCB-05689/ground_truth_target.json b/FormulaCascade_Benchmark_eval_200/T3_MEDIUM/internal/FCB-05689/ground_truth_target.json
new file mode 100644
index 0000000000000000000000000000000000000000..6ca63d7d76b1968b6f68582c3e423e2e516481b1
--- /dev/null
+++ b/FormulaCascade_Benchmark_eval_200/T3_MEDIUM/internal/FCB-05689/ground_truth_target.json
@@ -0,0 +1,114 @@
+[
+  {
+    "sheet": "FABRICATION",
+    "col": "A",
+    "row": 4,
+    "formula": "=IF(B4=0,0,A3+1)",
+    "cached_value": 2,
+    "pattern_id": "pf_0013"
+  },
+  {
+    "sheet": "FABRICATION",
+    "col": "A",
+    "row": 5,
+    "formula": "=IF(B5=0,0,A4+1)",
+    "cached_value": 3,
+    "pattern_id": "pf_0013"
+  },
+  {
+    "sheet": "FABRICATION",
+    "col": "A",
+    "row": 6,
+    "formula": "=IF(B6=0,0,A5+1)",
+    "cached_value": 4,
+    "pattern_id": "pf_0013"
+  },
+  {
+    "sheet": "FABRICATION",
+    "col": "A",
+    "row": 7,
+    "formula": "=IF(B7=0,0,A6+1)",
+    "cached_value": 5,
+    "pattern_id": "pf_0013"
+  },
+  {
+    "sheet": "FABRICATION",
+    "col": "A",
+    "row": 8,
+    "formula": "=IF(B8=0,0,A7+1)",
+    "cached_value": 6,
+    "pattern_id": "pf_0013"
+  },
+  {
+    "sheet": "FABRICATION",
+    "col": "A",
+    "row": 9,
+    "formula": "=IF(B9=0,0,A8+1)",
+    "cached_value": 7,
+    "pattern_id": "pf_0013"
+  },
+  {
+    "sheet": "FABRICATION",
+    "col": "A",
+    "row": 10,
+    "formula": "=IF(B10=0,0,A9+1)",
+    "cached_value": 8,
+    "pattern_id": "pf_0013"
+  },
+  {
+    "sheet": "FABRICATION",
+    "col": "A",
+    "row": 11,
+    "formula": "=IF(B11=0,0,A10+1)",
+    "cached_value": 9,
+    "pattern_id": "pf_0013"
+  },
+  {
+    "sheet": "FABRICATION",
+    "col": "A",
+    "row": 12,
+    "formula": "=IF(B12=0,0,A11+1)",
+    "cached_value": 10,
+    "pattern_id": "pf_0013"
+  },
+  {
+    "sheet": "FABRICATION",
+    "col": "A",
+    "row": 13,
+    "formula": "=IF(B13=0,0,A12+1)",
+    "cached_value": 11,
+    "pattern_id": "pf_0013"
+  },
+  {
+    "sheet": "FABRICATION",
+    "col": "A",
+    "row": 14,
+    "formula": "=IF(B14=0,0,A13+1)",
+    "cached_value": 12,
+    "pattern_id": "pf_0013"
+  },
+  {
+    "sheet": "FABRICATION",
+    "col": "A",
+    "row": 15,
+    "formula": "=IF(B15=0,0,A14+1)",
+    "cached_value": 13,
+    "pattern_id": "pf_0013"
+  },
+  {
+    "sheet": "FABRICATION",
+    "col": "A",
+    "row": 16,
+    "formula": "=IF(B16=0,0,A15+1)",
+    "cached_value": 14,
+    "pattern_id": "pf_0013"
+  },
+  {
+    "sheet": "FABRICATION",
+    "col": "A",
+    "row": 17,
+    "formula": "=IF(B17=0,0,A16+1)",
+    "cached_value": 15,
+    "pattern_id": "pf_0013"
+  }
+]
\ No newline at end of file
diff --git a/FormulaCascade_Benchmark_eval_200/T3_MEDIUM/internal/FCB-05689/layers.json b/FormulaCascade_Benchmark_eval_200/T3_MEDIUM/internal/FCB-05689/layers.json
new file mode 100644
index 0000000000000000000000000000000000000000..6740beef1b9d8fc2f0d5651fe8ad88daa4b210ed
--- /dev/null
+++ b/FormulaCascade_Benchmark_eval_200/T3_MEDIUM/internal/FCB-05689/layers.json
@@ -0,0 +1,80 @@
+{
+  "dag_id": "dag_c92b7327c88d",
+  "file_id": "41296d1239792899-vlookup-from-multiple-sheets-shift-schedule",
+  "category": "single_sheet",
+  "surface_category": "single_sheet",
+  "effective_category": "single_sheet",
+  "depth": 2,
+  "quality": {
+    "chain_error_cells": 0,
+    "chain_external_cells": 0,
+    "is_clean": true
+  },
+  "layers": [
+    {
+      "layer_index": 1,
+      "new_pattern_groups": [
+        {
+          "region_ids": [
+            "rg_01308"
+          ],
+          "sheet": "FABRICATION",
+          "col": "A",
+          "rows": [
+            4,
+            5,
+            6,
+            7,
+            8,
+            9,
+            10,
+            11,
+            12,
+            13,
+            14,
+            15,
+            16,
+            17
+          ],
+          "row_ranges": "4-17",
+          "row_count": 14,
+          "pattern_id": "pf_0013",
+          "normalized_pattern": "=IF([C+1,R]=0,0,[C,R-1]+1)",
+          "sample_formula": "=IF(B4=0,0,A3+1)"
+        }
+      ],
+      "new_eval_cells": 14,
+      "total_masked_cells": 14
+    },
+    {
+      "layer_index": 2,
+      "new_pattern_groups": [
+        {
+          "region_ids": [
+            "rg_02575"
+          ],
+          "sheet": "FABRICATION",
+          "col": "A",
+          "rows": [
+            3
+          ],
+          "row_ranges": "3",
+          "row_count": 1,
+          "pattern_id": "pf_0051",
+          "normalized_pattern": "=IF([C+1,R]=0,0,1)",
+          "sample_formula": "=IF(B3=0,0,1)"
+        }
+      ],
+      "new_eval_cells": 1,
+      "total_masked_cells": 15
+    }
+  ],
+  "sink": {
+    "region_id": "rg_01308",
+    "sheet": "FABRICATION",
+    "col": "A",
+    "pattern_id": "pf_0013",
+    "row_count": 14,
+    "family_size": 14
+  }
+}
\ No newline at end of file
diff --git a/FormulaCascade_Benchmark_eval_200/T3_MEDIUM/internal/FCB-05689/nl_task.json b/FormulaCascade_Benchmark_eval_200/T3_MEDIUM/internal/FCB-05689/nl_task.json
new file mode 100644
index 0000000000000000000000000000000000000000..66d6eef9ac9f325d6e515d390e6ec7fb39222c8f
--- /dev/null
+++ b/FormulaCascade_Benchmark_eval_200/T3_MEDIUM/internal/FCB-05689/nl_task.json
@@ -0,0 +1,26 @@
+{
+  "task_id": "single_sheet__dag_c92b7327c88d",
+  "prompt_en": "The FABRICATION sheet is an operations roster-style report with weekday headers like TUE, WED, THU, FRI, SAT, and SUN, plus fields such as SAP NO., NAME, SECTION, and dated columns like 02.03, 03.03, and 04.03. Please complete the blank entries in the [Person_1]. column on this sheet, specifically A4:A17, using the visible surrounding entries in the same report. Some blank columns in this workbook feed into other blank columns, so the person-column entries need to be in place before the related day and date sections are finalized. Save the completed workbook as an .xlsx file.",
+  "prompt_cn": "FABRICATION 工作表是一份运营排班/记录类报表，里面有 TUE、WED、THU、FRI、SAT、SUN 等星期标题，也有 SAP NO.、NAME、SECTION，以及 02.03、03.03、04.03 这类日期列。请根据同一张表中周围可见的内容，补全 [Person_1]. 列中的空白项，位置是 A4:A17。这个工作簿里有些空白列会影响后续相关列，所以需要先把这个人员列的内容补齐，后面的星期和日期部分才好最终确认。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 sheet labels and the specified target range, avoids formulas and operation hints, and includes a natural note about prerequisite context without listing a dependency chain.",
+  "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": 64.8,
+  "attempt": 2
+}
\ No newline at end of file
diff --git a/FormulaCascade_Benchmark_eval_200/T3_MEDIUM/internal/FCB-05689/release_qc.json b/FormulaCascade_Benchmark_eval_200/T3_MEDIUM/internal/FCB-05689/release_qc.json
new file mode 100644
index 0000000000000000000000000000000000000000..7b052cba4215506b64dd81dc7d148e6585b453ff
--- /dev/null
+++ b/FormulaCascade_Benchmark_eval_200/T3_MEDIUM/internal/FCB-05689/release_qc.json
@@ -0,0 +1,58 @@
+{
+  "binary": true,
+  "binary_reason": "CORRECT: mask is clean and the serial-number chain in FABRICATION column A is inferable from the roster structure and visible SAP-number rows, with only minor NL ambiguity around the masked A3 prerequisite.",
+  "D1": {
+    "score": 5,
+    "reason": "All 15 masked cells are real cells within FABRICATION's 17-row data range. The mask boundary is clean: all contract cells are truly masked, no contract cells are left unmasked, and there are no extra masked cells outside the contract. The formula-cache-missing entries are an openpyxl artifact and not a masking issue. No evidence of phantom cells or harmful leakage."
+  },
+  "D2": {
+    "score": 5,
+    "reason": "The GT formulas are consistent with src.xlsx: A3 establishes the first serial value as 1 when B3 is nonzero, and A4:A17 increment the previous value when the corresponding SAP NO. cell is nonzero. Since B4:B17 are all nonzero, cached values 2 through 15 match the formulas. The formulas are deterministic."
+  },
+  "D3": {
+    "score": 4,
+    "reason": "The NL clearly identifies the sheet, column, and final range A4:A17 to complete. It gives useful roster/report context. Minor issue: A3 is also masked as a prerequisite but is not explicitly called out, so a solver must notice that the visible blank immediately above the requested range is needed to reconstruct the chain."
+  },
+  "D4": {
+    "score": 4,
+    "reason": "Using only mask_last.xlsx and the NL, the needed root evidence is mostly present: FABRICATION is a roster table, A2 is the person/serial-style column, B contains visible SAP NO. entries for each row, and A3:A17 are the only blanks in that numbering column. A reasonable solver can infer that the first populated SAP row should be numbered 1 and subsequent populated SAP rows increment sequentially, yielding A4:A17. The only minor gap is that the exact IF(B=0,0,...) conditional and the hidden A3 starting formula are not explicitly visible in the local masked span, but the visible structure is sufficient for reconstruction.",
+    "d4_type": "ok"
+  },
+  "D5": {
+    "score": 5,
+    "reason": "The source spreadsheet appears sound for this task. The FABRICATION roster has meaningful headers, populated SAP NO. values, lookup formulas for name/section, and consistent day/date formulas. No circular references, corrupted values, broken formulas, or data-range anomalies are indicated."
+  },
+  "D6": {
+    "score": 4,
+    "reason": "The NL reads like a plausible workplace request describing an operations roster and asking for blank entries to be completed. It is somewhat verbose and includes a slightly artificial sentence about blank columns feeding other blank columns, but it avoids explicit benchmark jargon and remains natural enough."
+  },
+  "total": 27,
+  "verdict": "RELEASE",
+  "verdict_reason": "High-quality task overall: clean masking, correct GT, and sufficient visible roster structure to infer the serial-number chain. Minor NL ambiguity around the masked A3 prerequisite does not prevent solvability.",
+  "frontier_hardness": {
+    "score": 2,
+    "reason": "This is a short single-column serial-number chain with no cross-sheet dependency for the target formulas and only two simple formula patterns. A frontier model should likely infer the numbering sequence from the roster structure and visible SAP NO. rows.",
+    "fail_reason": "easy",
+    "is_valid_hardness": false
+  },
+  "_prompt_chars": 46481,
+  "_timing_load_workbooks": 3.88,
+  "_timing_context": 0.05,
+  "_timing_api": 158.22,
+  "local_difficulty": {
+    "difficulty_score": 38.6,
+    "difficulty": "medium",
+    "depth": 2,
+    "total_masked": 15,
+    "is_cross_sheet": false,
+    "unique_patterns": 2,
+    "avg_complexity": 6,
+    "cross_refs": 0,
+    "visible_exemplar_ratio": 0.125
+  },
+  "task_id": "single_sheet__dag_c92b7327c88d",
+  "elapsed": 162.2,
+  "publish_decision": "YES",
+  "release_tier": "GOLD",
+  "hard_block_reasons": []
+}
\ No newline at end of file
diff --git a/FormulaCascade_Benchmark_eval_200/T3_MEDIUM/internal/FCB-05689/target_contract.json b/FormulaCascade_Benchmark_eval_200/T3_MEDIUM/internal/FCB-05689/target_contract.json
new file mode 100644
index 0000000000000000000000000000000000000000..654298f9593639847914e5a5314d139745810603
--- /dev/null
+++ b/FormulaCascade_Benchmark_eval_200/T3_MEDIUM/internal/FCB-05689/target_contract.json
@@ -0,0 +1,64 @@
+{
+  "task_id": "single_sheet__dag_c92b7327c88d",
+  "category": "single_sheet",
+  "depth": 2,
+  "final_target": {
+    "regions": [
+      {
+        "sheet": "FABRICATION",
+        "column": "A",
+        "column_header": "[Person_1].",
+        "cell_range": "A4:A17",
+        "cell_count": 14,
+        "rows": [
+          4,
+          5,
+          6,
+          7,
+          8,
+          9,
+          10,
+          11,
+          12,
+          13,
+          14,
+          15,
+          16,
+          17
+        ],
+        "first_row_label": "SUNDER RAO .M",
+        "last_row_label": "APPA RAO .K"
+      }
+    ],
+    "cell_count": 14,
+    "formula_families": [
+      "conditional"
+    ]
+  },
+  "prerequisite_steps": [
+    {
+      "layer": 2,
+      "regions": [
+        {
+          "sheet": "FABRICATION",
+          "column": "A",
+          "column_header": "[Person_1].",
+          "cell_range": "A3",
+          "cell_count": 1,
+          "rows": [
+            3
+          ],
+          "first_row_label": "VENKAT RATNAM .B",
+          "last_row_label": ""
+        }
+      ],
+      "cell_count": 1
+    }
+  ],
+  "total_prerequisite_cells": 1,
+  "total_masked_cells": 15,
+  "ratio_total_vs_final": 1.1,
+  "sheets_involved": [
+    "FABRICATION"
+  ]
+}
\ No newline at end of file
diff --git a/FormulaCascade_Benchmark_eval_200/T3_MEDIUM/internal/FCB-05689/task_meta.json b/FormulaCascade_Benchmark_eval_200/T3_MEDIUM/internal/FCB-05689/task_meta.json
new file mode 100644
index 0000000000000000000000000000000000000000..3efb62e3f20d90ff0ab88d7c05ff44d28b498dc9
--- /dev/null
+++ b/FormulaCascade_Benchmark_eval_200/T3_MEDIUM/internal/FCB-05689/task_meta.json
@@ -0,0 +1,926 @@
+{
+  "fcb_id": "FCB-05689",
+  "task_id": "single_sheet__dag_c92b7327c88d",
+  "tier": "T3_MEDIUM",
+  "category": "single_sheet",
+  "depth": 2,
+  "total_masked": 15,
+  "is_cross_sheet": false,
+  "prompt_en": "The FABRICATION sheet is an operations roster-style report with weekday headers like TUE, WED, THU, FRI, SAT, and SUN, plus fields such as SAP NO., NAME, SECTION, and dated columns like 02.03, 03.03, and 04.03. Please complete the blank entries in the [Person_1]. column on this sheet, specifically A4:A17, using the visible surrounding entries in the same report. Some blank columns in this workbook feed into other blank columns, so the person-column entries need to be in place before the related day and date sections are finalized. Save the completed workbook as an .xlsx file.",
+  "prompt_cn": "FABRICATION 工作表是一份运营排班/记录类报表，里面有 TUE、WED、THU、FRI、SAT、SUN 等星期标题，也有 SAP NO.、NAME、SECTION，以及 02.03、03.03、04.03 这类日期列。请根据同一张表中周围可见的内容，补全 [Person_1]. 列中的空白项，位置是 A4:A17。这个工作簿里有些空白列会影响后续相关列，所以需要先把这个人员列的内容补齐，后面的星期和日期部分才好最终确认。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": 38.6
+  },
+  "source_file_id": "41296d1239792899-vlookup-from-multiple-sheets-shift-schedule",
+  "inferred_domain": "operations",
+  "domain_confidence": 0.25,
+  "sheet_profiles": [
+    {
+      "name": "MANPOWER",
+      "used_range": "A1:AK102",
+      "row_count": 102,
+      "col_count": 37,
+      "has_header": true,
+      "title_hint": "MANPOWER",
+      "header_info": {
+        "sheet": "MANPOWER",
+        "header_row": 1,
+        "headers": {
+          "F": "TUE",
+          "G": "WED",
+          "H": "THU",
+          "I": "FRI",
+          "J": "SAT",
+          "K": "SUN",
+          "L": "MON",
+          "M": "TUE",
+          "N": "WED",
+          "O": "THU",
+          "P": "FRI",
+          "Q": "SAT",
+          "R": "SUN",
+          "S": "MON",
+          "T": "TUE",
+          "U": "WED",
+          "V": "THU",
+          "W": "FRI",
+          "X": "SAT",
+          "Y": "SUN",
+          "Z": "MON",
+          "AA": "TUE",
+          "AB": "WED",
+          "AC": "THU",
+          "AD": "FRI",
+          "AE": "SAT",
+          "AF": "SUN",
+          "AG": "MON",
+          "AH": "TUE",
+          "AI": "WED",
+          "AJ": "THU"
+        }
+      }
+    },
+    {
+      "name": "Sheet1",
+      "used_range": "A3:AC602",
+      "row_count": 600,
+      "col_count": 29,
+      "has_header": true,
+      "title_hint": "Sheet1",
+      "header_info": {
+        "sheet": "Sheet1",
+        "header_row": 3,
+        "headers": {
+          "A": "SAP NO.",
+          "B": "NAME",
+          "C": "SECTION",
+          "D": "02.03",
+          "E": "03.03",
+          "F": "04.03",
+          "G": "05.03",
+          "H": "06.03",
+          "I": "07.03",
+          "J": "09.03",
+          "K": "10.03",
+          "L": "11.03",
+          "M": "12.03",
+          "N": "13.03",
+          "O": "14.03",
+          "P": "16.03",
+          "Q": "17.03",
+          "R": "18.03",
+          "S": "19.03",
+          "T": "20.03",
+          "U": "21.03",
+          "V": "23.03",
+          "W": "24.03",
+          "X": "25.03",
+          "Y": "26.03",
+          "Z": "27.03",
+          "AA": "28.03",
+          "AB": "30.03",
+          "AC": "31.03"
+        }
+      }
+    },
+    {
+      "name": "SHEAR",
+      "used_range": "A1:AH17",
+      "row_count": 17,
+      "col_count": 34,
+      "has_header": true,
+      "title_hint": "SHEAR",
+      "header_info": {
+        "sheet": "SHEAR",
+        "header_row": 1,
+        "headers": {
+          "A": "SHEAR",
+          "E": "TUE",
+          "F": "THU",
+          "G": "FRI",
+          "H": "SAT",
+          "I": "SUN",
+          "J": "MON",
+          "K": "TUE",
+          "L": "WED",
+          "M": "THU",
+          "N": "FRI",
+          "O": "SAT",
+          "P": "SUN",
+          "Q": "MON",
+          "R": "TUE",
+          "S": "WED",
+          "T": "THU",
+          "U": "FRI",
+          "V": "SAT",
+          "W": "SUN",
+          "X": "MON",
+          "Y": "TUE",
+          "Z": "WED",
+          "AA": "THU",
+          "AB": "FRI",
+          "AC": "SAT",
+          "AD": "SUN",
+          "AE": "MON",
+          "AF": "TUE",
+          "AG": "WED",
+          "AH": "THU"
+        }
+      }
+    },
+    {
+      "name": "B BLD.",
+      "used_range": "A1:AH10",
+      "row_count": 10,
+      "col_count": 34,
+      "has_header": true,
+      "title_hint": "B BLD.",
+      "header_info": {
+        "sheet": "B BLD.",
+        "header_row": 1,
+        "headers": {
+          "A": "B BLD.",
+          "E": "TUE",
+          "F": "THU",
+          "G": "FRI",
+          "H": "SAT",
+          "I": "SUN",
+          "J": "MON",
+          "K": "TUE",
+          "L": "WED",
+          "M": "THU",
+          "N": "FRI",
+          "O": "SAT",
+          "P": "SUN",
+          "Q": "MON",
+          "R": "TUE",
+          "S": "WED",
+          "T": "THU",
+          "U": "FRI",
+          "V": "SAT",
+          "W": "SUN",
+          "X": "MON",
+          "Y": "TUE",
+          "Z": "WED",
+          "AA": "THU",
+          "AB": "FRI",
+          "AC": "SAT",
+          "AD": "SUN",
+          "AE": "MON",
+          "AF": "TUE",
+          "AG": "WED",
+          "AH": "THU"
+        }
+      }
+    },
+    {
+      "name": "DETAILS",
+      "used_range": "A1:AH6",
+      "row_count": 6,
+      "col_count": 34,
+      "has_header": true,
+      "title_hint": "DETAILS",
+      "header_info": {
+        "sheet": "DETAILS",
+        "header_row": 1,
+        "headers": {
+          "A": "DETAILS",
+          "E": "TUE",
+          "F": "THU",
+          "G": "FRI",
+          "H": "SAT",
+          "I": "SUN",
+          "J": "MON",
+          "K": "TUE",
+          "L": "WED",
+          "M": "THU",
+          "N": "FRI",
+          "O": "SAT",
+          "P": "SUN",
+          "Q": "MON",
+          "R": "TUE",
+          "S": "WED",
+          "T": "THU",
+          "U": "FRI",
+          "V": "SAT",
+          "W": "SUN",
+          "X": "MON",
+          "Y": "TUE",
+          "Z": "WED",
+          "AA": "THU",
+          "AB": "FRI",
+          "AC": "SAT",
+          "AD": "SUN",
+          "AE": "MON",
+          "AF": "TUE",
+          "AG": "WED",
+          "AH": "THU"
+        }
+      }
+    },
+    {
+      "name": "FABRICATION",
+      "used_range": "A1:AH17",
+      "row_count": 17,
+      "col_count": 34,
+      "has_header": true,
+      "title_hint": "FABRICATION",
+      "header_info": {
+        "sheet": "FABRICATION",
+        "header_row": 1,
+        "headers": {
+          "A": "FABRICATION",
+          "E": "TUE",
+          "F": "THU",
+          "G": "FRI",
+          "H": "SAT",
+          "I": "SUN",
+          "J": "MON",
+          "K": "TUE",
+          "L": "WED",
+          "M": "THU",
+          "N": "FRI",
+          "O": "SAT",
+          "P": "SUN",
+          "Q": "MON",
+          "R": "TUE",
+          "S": "WED",
+          "T": "THU",
+          "U": "FRI",
+          "V": "SAT",
+          "W": "SUN",
+          "X": "MON",
+          "Y": "TUE",
+          "Z": "WED",
+          "AA": "THU",
+          "AB": "FRI",
+          "AC": "SAT",
+          "AD": "SUN",
+          "AE": "MON",
+          "AF": "TUE",
+          "AG": "WED",
+          "AH": "THU"
+        }
+      }
+    },
+    {
+      "name": "WELDING",
+      "used_range": "A1:AH15",
+      "row_count": 15,
+      "col_count": 34,
+      "has_header": true,
+      "title_hint": "WELDING",
+      "header_info": {
+        "sheet": "WELDING",
+        "header_row": 1,
+        "headers": {
+          "A": "WELDING",
+          "E": "TUE",
+          "F": "THU",
+          "G": "FRI",
+          "H": "SAT",
+          "I": "SUN",
+          "J": "MON",
+          "K": "TUE",
+          "L": "WED",
+          "M": "THU",
+          "N": "FRI",
+          "O": "SAT",
+          "P": "SUN",
+          "Q": "MON",
+          "R": "TUE",
+          "S": "WED",
+          "T": "THU",
+          "U": "FRI",
+          "V": "SAT",
+          "W": "SUN",
+          "X": "MON",
+          "Y": "TUE",
+          "Z": "WED",
+          "AA": "THU",
+          "AB": "FRI",
+          "AC": "SAT",
+          "AD": "SUN",
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+      }
+    }
+  ]
+}
\ No newline at end of file
diff --git a/FormulaCascade_Benchmark_eval_200/T3_MEDIUM/internal/FCB-05811/audit.json b/FormulaCascade_Benchmark_eval_200/T3_MEDIUM/internal/FCB-05811/audit.json
new file mode 100644
index 0000000000000000000000000000000000000000..fcba4c90eae93dc490fc806582636b89f7cb1ca2
--- /dev/null
+++ b/FormulaCascade_Benchmark_eval_200/T3_MEDIUM/internal/FCB-05811/audit.json
@@ -0,0 +1,412 @@
+{
+  "gate": {
+    "pre_nl_gate": {
+      "gate_label": "GATE_PASS",
+      "gate_pass": true,
+      "hard_fails": 0,
+      "warns": 0,
+      "checks": [
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+          "check": "final_target_gate",
+          "pass": true,
+          "detail": "final_target has 35 cells"
+        },
+        {
+          "check": "header_grounding",
+          "pass": true,
+          "severity": "pass",
+          "detail": "1/1 final regions have column_header"
+        },
+        {
+          "check": "mask_consistency",
+          "pass": true,
+          "detail": "mask_last=29378B, src=43836B"
+        },
+        {
+          "check": "dirty_family",
+          "pass": true,
+          "detail": "0 dirty cells"
+        },
+        {
+          "check": "ratio_gate",
+          "pass": true,
+          "detail": "ratio=2.0 (total=70, final=35)"
+        },
+        {
+          "check": "dedup_gate",
+          "pass": true,
+          "detail": "0 duplicate cells across layers"
+        },
+        {
+          "check": "gt_uniqueness",
+          "pass": true,
+          "detail": "70 unique values across 70 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: Raw Data!D→E(35/35)"
+        },
+        {
+          "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": {
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+          "detail": "no explicit total found; skipping (natural format)",
+          "severity": "OK"
+        },
+        {
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+          "pass": true,
+          "detail": "contract=1, no explicit steps found (v5 natural format)",
+          "severity": "OK"
+        },
+        {
+          "check": "sheet_name_match",
+          "pass": true,
+          "detail": "contract=['Raw Data'], 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 35 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 2 col groups"
+        },
+        {
+          "check": "nl_gt_operation_consistency",
+          "pass": true,
+          "detail": "GT funcs: ['IFERROR', 'RANK', 'VALUE']",
+          "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 70 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": {
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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": {
+    "uniqueness": {
+      "total_gt_cells": 70,
+      "total_non_none": 70,
+      "block_reasons": [],
+      "warnings": [
+        "mixed_gt_types:{'int': 35, 'str': 35}"
+      ],
+      "checks": {
+        "rank_tie_risk": {
+          "rank_cells": 35,
+          "tie_issues": 0,
+          "details": []
+        },
+        "trivial_gt": {
+          "issues": []
+        },
+        "gt_type_consistency": {
+          "types": {
+            "int": 35,
+            "str": 35
+          },
+          "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": 70
+      }
+    },
+    "solver_visibility": {
+      "contract_cells": 70,
+      "total_masked": 70,
+      "total_visible": 833,
+      "depth": 2,
+      "block_reasons": [],
+      "warnings": [],
+      "checks": {
+        "broken_chains": {
+          "count": 0,
+          "checked": 70,
+          "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": 16,
+          "zero_exemplar_count": 0,
+          "low_exemplar_count": 0
+        },
+        "zero_exemplar_patterns": {
+          "pass": true,
+          "patterns": []
+        },
+        "low_exemplar_patterns": {
+          "pass": true,
+          "patterns": []
+        },
+        "func_coverage": {
+          "VALUE": {
+            "total_masked": 35,
+            "visible_exemplars": 166
+          },
+          "IFERROR": {
+            "total_masked": 35,
+            "visible_exemplars": 1360
+          }
+        }
+      }
+    },
+    "shortcut": {
+      "shortcut_risk": 0.0,
+      "flags": []
+    },
+    "release_audit": {
+      "surface_single_sheet": true,
+      "surface_sheets": [
+        "Raw Data"
+      ],
+      "cross_sheet_actual": false,
+      "cross_sheet_ref_count": 0,
+      "referenced_sheets": [],
+      "target_shape": "single_column_series",
+      "layer_sizes": [
+        35,
+        35
+      ],
+      "mask_last_total_cells": 70,
+      "layer_growth_ratios": [
+        1.0
+      ],
+      "pattern_dominance_ratio": 0.5,
+      "visible_clone_regions": 4,
+      "nearby_visible_clone_regions": 2,
+      "nearby_visible_clone_rows": 70,
+      "nearby_visible_clone_ratio": 2.0,
+      "promptability_score": 0.6,
+      "release_reasons": [
+        "parallel_block_leakage"
+      ],
+      "release_verdict": "REBUILD_REQUIRED"
+    }
+  },
+  "difficulty": {
+    "task_id": "single_sheet__dag_da983dc0f86c",
+    "difficulty_score": 41.0,
+    "difficulty": "medium",
+    "depth": 2,
+    "total_masked": 70,
+    "is_cross_sheet": false,
+    "unique_patterns": 2,
+    "avg_complexity": 4.0,
+    "cross_refs": 0,
+    "visible_exemplar_ratio": 0.028,
+    "score_breakdown": {
+      "depth": 7,
+      "cross_sheet": 0,
+      "cell_count": 12.3,
+      "patterns": 6,
+      "complexity": 6.0,
+      "cross_refs": 0,
+      "vis_penalty": 9.7
+    }
+  }
+}
\ No newline at end of file
diff --git a/FormulaCascade_Benchmark_eval_200/T3_MEDIUM/internal/FCB-05811/ground_truth_full.json b/FormulaCascade_Benchmark_eval_200/T3_MEDIUM/internal/FCB-05811/ground_truth_full.json
new file mode 100644
index 0000000000000000000000000000000000000000..6145dee530d502239027acc5f98c026850e7d428
--- /dev/null
+++ b/FormulaCascade_Benchmark_eval_200/T3_MEDIUM/internal/FCB-05811/ground_truth_full.json
@@ -0,0 +1,632 @@
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+    "sheet": "Raw Data",
+    "col": "E",
+    "row": 26,
+    "formula": "=VALUE(D26)",
+    "cached_value": "22:00:45",
+    "pattern_id": "pf_0003",
+    "layer": 2
+  },
+  {
+    "sheet": "Raw Data",
+    "col": "E",
+    "row": 27,
+    "formula": "=VALUE(D27)",
+    "cached_value": "23:00:45",
+    "pattern_id": "pf_0003",
+    "layer": 2
+  },
+  {
+    "sheet": "Raw Data",
+    "col": "E",
+    "row": 28,
+    "formula": "=VALUE(D28)",
+    "cached_value": "1900-01-01 00:00:45",
+    "pattern_id": "pf_0003",
+    "layer": 2
+  },
+  {
+    "sheet": "Raw Data",
+    "col": "E",
+    "row": 29,
+    "formula": "=VALUE(D29)",
+    "cached_value": "1900-01-01 01:00:45",
+    "pattern_id": "pf_0003",
+    "layer": 2
+  },
+  {
+    "sheet": "Raw Data",
+    "col": "E",
+    "row": 30,
+    "formula": "=VALUE(D30)",
+    "cached_value": "1900-01-01 02:00:45",
+    "pattern_id": "pf_0003",
+    "layer": 2
+  },
+  {
+    "sheet": "Raw Data",
+    "col": "E",
+    "row": 31,
+    "formula": "=VALUE(D31)",
+    "cached_value": "1900-01-01 03:00:45",
+    "pattern_id": "pf_0003",
+    "layer": 2
+  },
+  {
+    "sheet": "Raw Data",
+    "col": "E",
+    "row": 32,
+    "formula": "=VALUE(D32)",
+    "cached_value": "1900-01-01 04:00:45",
+    "pattern_id": "pf_0003",
+    "layer": 2
+  },
+  {
+    "sheet": "Raw Data",
+    "col": "E",
+    "row": 33,
+    "formula": "=VALUE(D33)",
+    "cached_value": "1900-01-01 05:00:45",
+    "pattern_id": "pf_0003",
+    "layer": 2
+  },
+  {
+    "sheet": "Raw Data",
+    "col": "E",
+    "row": 34,
+    "formula": "=VALUE(D34)",
+    "cached_value": "1900-01-01 06:00:45",
+    "pattern_id": "pf_0003",
+    "layer": 2
+  },
+  {
+    "sheet": "Raw Data",
+    "col": "E",
+    "row": 35,
+    "formula": "=VALUE(D35)",
+    "cached_value": "1900-01-01 07:00:45",
+    "pattern_id": "pf_0003",
+    "layer": 2
+  },
+  {
+    "sheet": "Raw Data",
+    "col": "E",
+    "row": 36,
+    "formula": "=VALUE(D36)",
+    "cached_value": "1900-01-01 08:00:45",
+    "pattern_id": "pf_0003",
+    "layer": 2
+  },
+  {
+    "sheet": "Raw Data",
+    "col": "E",
+    "row": 37,
+    "formula": "=VALUE(D37)",
+    "cached_value": "1900-01-01 09:00:45",
+    "pattern_id": "pf_0003",
+    "layer": 2
+  },
+  {
+    "sheet": "Raw Data",
+    "col": "E",
+    "row": 38,
+    "formula": "=VALUE(D38)",
+    "cached_value": "1900-01-01 10:00:45",
+    "pattern_id": "pf_0003",
+    "layer": 2
+  }
+]
\ No newline at end of file
diff --git a/FormulaCascade_Benchmark_eval_200/T3_MEDIUM/internal/FCB-05811/ground_truth_target.json b/FormulaCascade_Benchmark_eval_200/T3_MEDIUM/internal/FCB-05811/ground_truth_target.json
new file mode 100644
index 0000000000000000000000000000000000000000..d2f1fbb33bc413583c2a4df935fd708e91af5189
--- /dev/null
+++ b/FormulaCascade_Benchmark_eval_200/T3_MEDIUM/internal/FCB-05811/ground_truth_target.json
@@ -0,0 +1,282 @@
+[
+  {
+    "sheet": "Raw Data",
+    "col": "F",
+    "row": 4,
+    "formula": "=IFERROR((RANK(E4,$E$4:$E$38,1)),\"\")",
+    "cached_value": 2,
+    "pattern_id": "pf_0006"
+  },
+  {
+    "sheet": "Raw Data",
+    "col": "F",
+    "row": 5,
+    "formula": "=IFERROR((RANK(E5,$E$4:$E$38,1)),\"\")",
+    "cached_value": 3,
+    "pattern_id": "pf_0006"
+  },
+  {
+    "sheet": "Raw Data",
+    "col": "F",
+    "row": 6,
+    "formula": "=IFERROR((RANK(E6,$E$4:$E$38,1)),\"\")",
+    "cached_value": 1,
+    "pattern_id": "pf_0006"
+  },
+  {
+    "sheet": "Raw Data",
+    "col": "F",
+    "row": 7,
+    "formula": "=IFERROR((RANK(E7,$E$4:$E$38,1)),\"\")",
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+    "pattern_id": "pf_0006"
+  },
+  {
+    "sheet": "Raw Data",
+    "col": "F",
+    "row": 8,
+    "formula": "=IFERROR((RANK(E8,$E$4:$E$38,1)),\"\")",
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+    "pattern_id": "pf_0006"
+  },
+  {
+    "sheet": "Raw Data",
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+    "row": 9,
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+    "pattern_id": "pf_0006"
+  },
+  {
+    "sheet": "Raw Data",
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+    "formula": "=IFERROR((RANK(E10,$E$4:$E$38,1)),\"\")",
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+    "pattern_id": "pf_0006"
+  },
+  {
+    "sheet": "Raw Data",
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+    "pattern_id": "pf_0006"
+  },
+  {
+    "sheet": "Raw Data",
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+    "formula": "=IFERROR((RANK(E12,$E$4:$E$38,1)),\"\")",
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+    "pattern_id": "pf_0006"
+  },
+  {
+    "sheet": "Raw Data",
+    "col": "F",
+    "row": 13,
+    "formula": "=IFERROR((RANK(E13,$E$4:$E$38,1)),\"\")",
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+    "pattern_id": "pf_0006"
+  },
+  {
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+    "formula": "=IFERROR((RANK(E14,$E$4:$E$38,1)),\"\")",
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+    "pattern_id": "pf_0006"
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+    "formula": "=IFERROR((RANK(E15,$E$4:$E$38,1)),\"\")",
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+    "pattern_id": "pf_0006"
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+    "pattern_id": "pf_0006"
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+    "formula": "=IFERROR((RANK(E19,$E$4:$E$38,1)),\"\")",
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+    "pattern_id": "pf_0006"
+  },
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+    "formula": "=IFERROR((RANK(E20,$E$4:$E$38,1)),\"\")",
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+    "pattern_id": "pf_0006"
+  },
+  {
+    "sheet": "Raw Data",
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+    "formula": "=IFERROR((RANK(E21,$E$4:$E$38,1)),\"\")",
+    "cached_value": 18,
+    "pattern_id": "pf_0006"
+  },
+  {
+    "sheet": "Raw Data",
+    "col": "F",
+    "row": 22,
+    "formula": "=IFERROR((RANK(E22,$E$4:$E$38,1)),\"\")",
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+    "pattern_id": "pf_0006"
+  },
+  {
+    "sheet": "Raw Data",
+    "col": "F",
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+    "formula": "=IFERROR((RANK(E23,$E$4:$E$38,1)),\"\")",
+    "cached_value": 20,
+    "pattern_id": "pf_0006"
+  },
+  {
+    "sheet": "Raw Data",
+    "col": "F",
+    "row": 24,
+    "formula": "=IFERROR((RANK(E24,$E$4:$E$38,1)),\"\")",
+    "cached_value": 21,
+    "pattern_id": "pf_0006"
+  },
+  {
+    "sheet": "Raw Data",
+    "col": "F",
+    "row": 25,
+    "formula": "=IFERROR((RANK(E25,$E$4:$E$38,1)),\"\")",
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+    "pattern_id": "pf_0006"
+  },
+  {
+    "sheet": "Raw Data",
+    "col": "F",
+    "row": 26,
+    "formula": "=IFERROR((RANK(E26,$E$4:$E$38,1)),\"\")",
+    "cached_value": 23,
+    "pattern_id": "pf_0006"
+  },
+  {
+    "sheet": "Raw Data",
+    "col": "F",
+    "row": 27,
+    "formula": "=IFERROR((RANK(E27,$E$4:$E$38,1)),\"\")",
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+    "pattern_id": "pf_0006"
+  },
+  {
+    "sheet": "Raw Data",
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+    "formula": "=IFERROR((RANK(E28,$E$4:$E$38,1)),\"\")",
+    "cached_value": 25,
+    "pattern_id": "pf_0006"
+  },
+  {
+    "sheet": "Raw Data",
+    "col": "F",
+    "row": 29,
+    "formula": "=IFERROR((RANK(E29,$E$4:$E$38,1)),\"\")",
+    "cached_value": 26,
+    "pattern_id": "pf_0006"
+  },
+  {
+    "sheet": "Raw Data",
+    "col": "F",
+    "row": 30,
+    "formula": "=IFERROR((RANK(E30,$E$4:$E$38,1)),\"\")",
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+    "pattern_id": "pf_0006"
+  },
+  {
+    "sheet": "Raw Data",
+    "col": "F",
+    "row": 31,
+    "formula": "=IFERROR((RANK(E31,$E$4:$E$38,1)),\"\")",
+    "cached_value": 28,
+    "pattern_id": "pf_0006"
+  },
+  {
+    "sheet": "Raw Data",
+    "col": "F",
+    "row": 32,
+    "formula": "=IFERROR((RANK(E32,$E$4:$E$38,1)),\"\")",
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+    "pattern_id": "pf_0006"
+  },
+  {
+    "sheet": "Raw Data",
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+    "formula": "=IFERROR((RANK(E33,$E$4:$E$38,1)),\"\")",
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+    "pattern_id": "pf_0006"
+  },
+  {
+    "sheet": "Raw Data",
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+    "formula": "=IFERROR((RANK(E34,$E$4:$E$38,1)),\"\")",
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+    "pattern_id": "pf_0006"
+  },
+  {
+    "sheet": "Raw Data",
+    "col": "F",
+    "row": 35,
+    "formula": "=IFERROR((RANK(E35,$E$4:$E$38,1)),\"\")",
+    "cached_value": 32,
+    "pattern_id": "pf_0006"
+  },
+  {
+    "sheet": "Raw Data",
+    "col": "F",
+    "row": 36,
+    "formula": "=IFERROR((RANK(E36,$E$4:$E$38,1)),\"\")",
+    "cached_value": 33,
+    "pattern_id": "pf_0006"
+  },
+  {
+    "sheet": "Raw Data",
+    "col": "F",
+    "row": 37,
+    "formula": "=IFERROR((RANK(E37,$E$4:$E$38,1)),\"\")",
+    "cached_value": 34,
+    "pattern_id": "pf_0006"
+  },
+  {
+    "sheet": "Raw Data",
+    "col": "F",
+    "row": 38,
+    "formula": "=IFERROR((RANK(E38,$E$4:$E$38,1)),\"\")",
+    "cached_value": 35,
+    "pattern_id": "pf_0006"
+  }
+]
\ No newline at end of file
diff --git a/FormulaCascade_Benchmark_eval_200/T3_MEDIUM/internal/FCB-05811/layers.json b/FormulaCascade_Benchmark_eval_200/T3_MEDIUM/internal/FCB-05811/layers.json
new file mode 100644
index 0000000000000000000000000000000000000000..3ea385b445524328a72be68dc911dfa52d2f6d52
--- /dev/null
+++ b/FormulaCascade_Benchmark_eval_200/T3_MEDIUM/internal/FCB-05811/layers.json
@@ -0,0 +1,135 @@
+{
+  "dag_id": "dag_da983dc0f86c",
+  "file_id": "271707d1382025177-if-function-for-a-wrap-time-sheet-wrap-time-sheet",
+  "category": "single_sheet",
+  "surface_category": "single_sheet",
+  "effective_category": "single_sheet",
+  "depth": 2,
+  "quality": {
+    "chain_error_cells": 0,
+    "chain_external_cells": 0,
+    "is_clean": true
+  },
+  "layers": [
+    {
+      "layer_index": 1,
+      "new_pattern_groups": [
+        {
+          "region_ids": [
+            "rg_00039"
+          ],
+          "sheet": "Raw Data",
+          "col": "F",
+          "rows": [
+            4,
+            5,
+            6,
+            7,
+            8,
+            9,
+            10,
+            11,
+            12,
+            13,
+            14,
+            15,
+            16,
+            17,
+            18,
+            19,
+            20,
+            21,
+            22,
+            23,
+            24,
+            25,
+            26,
+            27,
+            28,
+            29,
+            30,
+            31,
+            32,
+            33,
+            34,
+            35,
+            36,
+            37,
+            38
+          ],
+          "row_ranges": "4-38",
+          "row_count": 35,
+          "pattern_id": "pf_0006",
+          "normalized_pattern": "=IFERROR((RANK([C-1,R],[$E,$4]:[$E,$38],1)),\"\")",
+          "sample_formula": "=IFERROR((RANK(E4,$E$4:$E$38,1)),\"\")"
+        }
+      ],
+      "new_eval_cells": 35,
+      "total_masked_cells": 35
+    },
+    {
+      "layer_index": 2,
+      "new_pattern_groups": [
+        {
+          "region_ids": [
+            "rg_00032"
+          ],
+          "sheet": "Raw Data",
+          "col": "E",
+          "rows": [
+            4,
+            5,
+            6,
+            7,
+            8,
+            9,
+            10,
+            11,
+            12,
+            13,
+            14,
+            15,
+            16,
+            17,
+            18,
+            19,
+            20,
+            21,
+            22,
+            23,
+            24,
+            25,
+            26,
+            27,
+            28,
+            29,
+            30,
+            31,
+            32,
+            33,
+            34,
+            35,
+            36,
+            37,
+            38
+          ],
+          "row_ranges": "4-38",
+          "row_count": 35,
+          "pattern_id": "pf_0003",
+          "normalized_pattern": "=VALUE([C-1,R])",
+          "sample_formula": "=VALUE(D4)"
+        }
+      ],
+      "new_eval_cells": 35,
+      "total_masked_cells": 70
+    }
+  ],
+  "sink": {
+    "region_id": "rg_00039",
+    "sheet": "Raw Data",
+    "col": "F",
+    "pattern_id": "pf_0006",
+    "row_count": 35,
+    "family_size": 35
+  }
+}
\ No newline at end of file
diff --git a/FormulaCascade_Benchmark_eval_200/T3_MEDIUM/internal/FCB-05811/mask_last.xlsx b/FormulaCascade_Benchmark_eval_200/T3_MEDIUM/internal/FCB-05811/mask_last.xlsx
new file mode 100644
index 0000000000000000000000000000000000000000..1a67e628c9464ab5a4384acc0703b823604446dc
Binary files /dev/null and b/FormulaCascade_Benchmark_eval_200/T3_MEDIUM/internal/FCB-05811/mask_last.xlsx differ
diff --git a/FormulaCascade_Benchmark_eval_200/T3_MEDIUM/internal/FCB-05811/nl_task.json b/FormulaCascade_Benchmark_eval_200/T3_MEDIUM/internal/FCB-05811/nl_task.json
new file mode 100644
index 0000000000000000000000000000000000000000..c6a95fd96fa2237c1c93b409e8981aeb548419f4
--- /dev/null
+++ b/FormulaCascade_Benchmark_eval_200/T3_MEDIUM/internal/FCB-05811/nl_task.json
@@ -0,0 +1,26 @@
+{
+  "task_id": "single_sheet__dag_da983dc0f86c",
+  "prompt_en": "On the Raw Data sheet, the WRAP TIME RANK section is tracking agents for HR ranking work, with visible fields such as Agents, Points, TB, HEALTH, JANUARY, Performance, and Rank. Please fill in the missing entries in the Rank column for the agent rows, specifically Raw Data!F4:F38. The related performance fields on the sheet need to be in place before the Rank entries make sense, so keep the completed rows consistent with the visible Raw Data layout. Save the completed workbook as an .xlsx file.",
+  "prompt_cn": "在“Raw Data”工作表中，“WRAP TIME RANK”部分用于人力资源相关的坐席排名整理，表里能看到 Agents、Points、TB、HEALTH、JANUARY、Performance 和 Rank 等字段。请补全坐席行中 Rank 列缺失的内容，位置是 Raw Data!F4:F38。表中的相关绩效字段需要先保持完整，Rank 列的内容才会对应得上，所以请让补好的行与 Raw Data 中可见的表格内容保持一致。请将完成后的工作簿保存为 .xlsx 文件。",
+  "quality_notes": "The prompt is minimal and business-framed, references only visible sheet names and headers, identifies the target Rank column and range, mentions the natural dependency without explaining any operation, and avoids formulas or answer values.",
+  "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": 34.9,
+  "attempt": 1
+}
\ No newline at end of file
diff --git a/FormulaCascade_Benchmark_eval_200/T3_MEDIUM/internal/FCB-05811/release_qc.json b/FormulaCascade_Benchmark_eval_200/T3_MEDIUM/internal/FCB-05811/release_qc.json
new file mode 100644
index 0000000000000000000000000000000000000000..0cf19e62fb93061dfe8477ba11b8be9e0efaeabb
--- /dev/null
+++ b/FormulaCascade_Benchmark_eval_200/T3_MEDIUM/internal/FCB-05811/release_qc.json
@@ -0,0 +1,58 @@
+{
+  "binary": true,
+  "binary_reason": "CORRECT — mask is clean, formulas are valid, and the E→F dependency chain is inferable from visible adjacent Value/Rank column patterns.",
+  "D1": {
+    "score": 5,
+    "reason": "All 70 contract cells are real cells within Raw Data!E4:F38, and the diff summary shows exactly 70 truly masked cells with no extra masking and no unmasked contract cells. The formula_cache_missing entries are expected openpyxl artifacts. Visible adjacent Value/Rank exemplars exist in H/I, K/L, etc., but they do not invalidate the task; they provide intended structural clues rather than masking leakage outside the contract."
+  },
+  "D2": {
+    "score": 5,
+    "reason": "The ground-truth formulas are consistent and deterministic: E cells compute VALUE(Drow), and F cells rank each E value ascending over $E$4:$E$38 with IFERROR handling. The cached ranks shown are consistent with the visible increasing time/value sequence, including the 1900-date serial values for durations beyond 24 hours."
+  },
+  "D3": {
+    "score": 4,
+    "reason": "The prompt clearly identifies the final target range Raw Data!F4:F38 and the Rank column. It also hints that related performance/value fields must be in place, but it does not explicitly name Raw Data!E4:E38 as the prerequisite range, so the chain requirement is slightly implicit."
+  },
+  "D4": {
+    "score": 5,
+    "reason": "Using only mask_last.xlsx and the NL prompt, the task is reconstructible. The masked E column is headed Value and sits between the visible time/performance column D and the masked Rank column F. Adjacent sections show the same structure: G/H/I, J/K/L, M/N with visible formulas such as H=VALUE(G) and I=RANK(H,$H$4:$H$38,1). Thus the solver has visible root evidence for both needed patterns: E should convert D via VALUE, and F should rank E over E4:E38 ascending. The chain order E before F is also evident from the column headers and neighboring exemplars.",
+    "d4_type": "ok"
+  },
+  "D5": {
+    "score": 4,
+    "reason": "The source spreadsheet appears formula-consistent, with no indicated circular references, broken formulas, or corrupted dependency chains. Headers and repeated section layout are mostly meaningful. Minor quality issues include some sparse/blank agent names, anonymized or odd headers such as D3=[Person_4], and somewhat unusual time/date representations for durations over 24 hours, but these do not break the task."
+  },
+  "D6": {
+    "score": 4,
+    "reason": "The NL description is reasonably natural as a workplace request about completing HR ranking data, though it includes explicit cell references and phrasing like 'visible fields' and 'completed rows consistent with the visible Raw Data layout,' which makes it somewhat benchmark-like."
+  },
+  "total": 27,
+  "verdict": "RELEASE",
+  "verdict_reason": "High-quality task: clean masking, correct ground truth, sufficient visible evidence for the two-step Value-to-Rank chain, and only minor prompt/source-data naturalness issues.",
+  "frontier_hardness": {
+    "score": 2,
+    "reason": "This is a short single-sheet depth-2 chain with two simple formula patterns. Adjacent visible sections provide clear exemplars for VALUE and RANK formulas, and there are no cross-sheet dependencies or hidden constants. A frontier model should likely solve it reliably, though it still must infer and fill the prerequisite E column before the final F ranks.",
+    "fail_reason": "easy",
+    "is_valid_hardness": false
+  },
+  "_prompt_chars": 44993,
+  "_timing_load_workbooks": 0.27,
+  "_timing_context": 0.01,
+  "_timing_api": 47.81,
+  "local_difficulty": {
+    "difficulty_score": 41.0,
+    "difficulty": "medium",
+    "depth": 2,
+    "total_masked": 70,
+    "is_cross_sheet": false,
+    "unique_patterns": 2,
+    "avg_complexity": 4,
+    "cross_refs": 0,
+    "visible_exemplar_ratio": 0.028
+  },
+  "task_id": "single_sheet__dag_da983dc0f86c",
+  "elapsed": 48.1,
+  "publish_decision": "YES",
+  "release_tier": "GOLD",
+  "hard_block_reasons": []
+}
\ No newline at end of file
diff --git a/FormulaCascade_Benchmark_eval_200/T3_MEDIUM/internal/FCB-05811/src.xlsx b/FormulaCascade_Benchmark_eval_200/T3_MEDIUM/internal/FCB-05811/src.xlsx
new file mode 100644
index 0000000000000000000000000000000000000000..77d71784ce560dd1ba09023cc3b8f9cfa0f8fdee
Binary files /dev/null and b/FormulaCascade_Benchmark_eval_200/T3_MEDIUM/internal/FCB-05811/src.xlsx differ
diff --git a/FormulaCascade_Benchmark_eval_200/T3_MEDIUM/internal/FCB-05811/target_contract.json b/FormulaCascade_Benchmark_eval_200/T3_MEDIUM/internal/FCB-05811/target_contract.json
new file mode 100644
index 0000000000000000000000000000000000000000..dee26a4ac60cb07cae57e4a58f6810f917339837
--- /dev/null
+++ b/FormulaCascade_Benchmark_eval_200/T3_MEDIUM/internal/FCB-05811/target_contract.json
@@ -0,0 +1,119 @@
+{
+  "task_id": "single_sheet__dag_da983dc0f86c",
+  "category": "single_sheet",
+  "depth": 2,
+  "final_target": {
+    "regions": [
+      {
+        "sheet": "Raw Data",
+        "column": "F",
+        "column_header": "Rank",
+        "cell_range": "F4:F38",
+        "cell_count": 35,
+        "rows": [
+          4,
+          5,
+          6,
+          7,
+          8,
+          9,
+          10,
+          11,
+          12,
+          13,
+          14,
+          15,
+          16,
+          17,
+          18,
+          19,
+          20,
+          21,
+          22,
+          23,
+          24,
+          25,
+          26,
+          27,
+          28,
+          29,
+          30,
+          31,
+          32,
+          33,
+          34,
+          35,
+          36,
+          37,
+          38
+        ],
+        "first_row_label": "[Person_2]",
+        "last_row_label": ""
+      }
+    ],
+    "cell_count": 35,
+    "formula_families": [
+      "conditional"
+    ]
+  },
+  "prerequisite_steps": [
+    {
+      "layer": 2,
+      "regions": [
+        {
+          "sheet": "Raw Data",
+          "column": "E",
+          "column_header": "Value",
+          "cell_range": "E4:E38",
+          "cell_count": 35,
+          "rows": [
+            4,
+            5,
+            6,
+            7,
+            8,
+            9,
+            10,
+            11,
+            12,
+            13,
+            14,
+            15,
+            16,
+            17,
+            18,
+            19,
+            20,
+            21,
+            22,
+            23,
+            24,
+            25,
+            26,
+            27,
+            28,
+            29,
+            30,
+            31,
+            32,
+            33,
+            34,
+            35,
+            36,
+            37,
+            38
+          ],
+          "first_row_label": "[Person_2]",
+          "last_row_label": ""
+        }
+      ],
+      "cell_count": 35
+    }
+  ],
+  "total_prerequisite_cells": 35,
+  "total_masked_cells": 70,
+  "ratio_total_vs_final": 2.0,
+  "sheets_involved": [
+    "Raw Data"
+  ]
+}
\ No newline at end of file
diff --git a/FormulaCascade_Benchmark_eval_200/T3_MEDIUM/internal/FCB-05811/task_meta.json b/FormulaCascade_Benchmark_eval_200/T3_MEDIUM/internal/FCB-05811/task_meta.json
new file mode 100644
index 0000000000000000000000000000000000000000..9b1bacfaa821641b1c2dd1f4923d26b4fc33bdaf
--- /dev/null
+++ b/FormulaCascade_Benchmark_eval_200/T3_MEDIUM/internal/FCB-05811/task_meta.json
@@ -0,0 +1,55 @@
+{
+  "fcb_id": "FCB-05811",
+  "task_id": "single_sheet__dag_da983dc0f86c",
+  "tier": "T3_MEDIUM",
+  "category": "single_sheet",
+  "depth": 2,
+  "total_masked": 70,
+  "is_cross_sheet": false,
+  "prompt_en": "On the Raw Data sheet, the WRAP TIME RANK section is tracking agents for HR ranking work, with visible fields such as Agents, Points, TB, HEALTH, JANUARY, Performance, and Rank. Please fill in the missing entries in the Rank column for the agent rows, specifically Raw Data!F4:F38. The related performance fields on the sheet need to be in place before the Rank entries make sense, so keep the completed rows consistent with the visible Raw Data layout. Save the completed workbook as an .xlsx file.",
+  "prompt_cn": "在“Raw Data”工作表中，“WRAP TIME RANK”部分用于人力资源相关的坐席排名整理，表里能看到 Agents、Points、TB、HEALTH、JANUARY、Performance 和 Rank 等字段。请补全坐席行中 Rank 列缺失的内容，位置是 Raw Data!F4:F38。表中的相关绩效字段需要先保持完整，Rank 列的内容才会对应得上，所以请让补好的行与 Raw Data 中可见的表格内容保持一致。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": 5,
+    "D5": 4,
+    "D6": 4,
+    "frontier_hardness": 2,
+    "local_difficulty": 41.0
+  },
+  "source_file_id": "271707d1382025177-if-function-for-a-wrap-time-sheet-wrap-time-sheet",
+  "inferred_domain": "hr",
+  "domain_confidence": 0.25,
+  "sheet_profiles": [
+    {
+      "name": "Scale",
+      "used_range": "A2:J348",
+      "row_count": 347,
+      "col_count": 10,
+      "has_header": false,
+      "title_hint": "Scale",
+      "header_info": null
+    },
+    {
+      "name": "Rankings",
+      "used_range": "A1:AP35",
+      "row_count": 35,
+      "col_count": 42,
+      "has_header": false,
+      "title_hint": "Rankings",
+      "header_info": null
+    },
+    {
+      "name": "Raw Data",
+      "used_range": "A1:O38",
+      "row_count": 38,
+      "col_count": 15,
+      "has_header": false,
+      "title_hint": "Raw Data",
+      "header_info": null
+    }
+  ]
+}
\ No newline at end of file