Add eval-200 summary

FormulaCascade_Benchmark_eval_200/eval200_summary_v2.json

@@ -0,0 +1,46 @@
+{
+  "total": 200,
+  "seed": 42,
+  "version": "v2",
+  "improvements": [
+    "All tasks: verdict=RELEASE only (no HOLD)",
+    "All tasks: total>=26, D3>=3, D4>=3",
+    "T2_HARD: total_masked<=2000 (removed extreme outliers)",
+    "T1_FRONTIER depth=2: total_masked>=50",
+    "T4_STANDARD: depth-stratified (depth=2:70%, 3-4:20%, 5+:10%)"
+  ],
+  "tier": {
+    "T1_FRONTIER": 50,
+    "T2_HARD": 50,
+    "T3_MEDIUM": 50,
+    "T4_STANDARD": 50
+  },
+  "verdict": {
+    "RELEASE": 200
+  },
+  "cross_sheet": 100,
+  "single_sheet": 100,
+  "domain": {
+    "general": 35,
+    "finance": 34,
+    "sales": 31,
+    "data_analysis": 28,
+    "education": 19,
+    "operations": 19,
+    "hr": 17,
+    "engineering": 17
+  },
+  "formula_family": {
+    "arithmetic": 68,
+    "conditional": 42,
+    "aggregation": 39,
+    "lookup": 33,
+    "ranking": 6
+  },
+  "qc_score": {
+    "mean": 27.3,
+    "median": 27.0,
+    "min": 26,
+    "max": 29
+  }
+}