feat(dotnet): migrate core formulas, deploy tools, and blazor admin web app to .NET 10

src/dotnet/QuantEngine.Core/Domain/ProfitLockCalculator.cs

@@ -0,0 +1,66 @@
+using System;
+
+namespace QuantEngine.Core.Domain
+{
+    public class ProfitLockResult
+    {
+        public string RatchetStage { get; set; } = "NORMAL";
+        public double? AutoTrailingStop { get; set; }
+        public string TpLadderAction { get; set; } = "적용 안함";
+        public bool ApexSuperActive { get; set; }
+    }
+
+    public static class ProfitLockCalculator
+    {
+        public static string ClassifyProfitLockStage(double profitPct)
+        {
+            if (profitPct >= 60) return "APEX_SUPER";
+            if (profitPct >= 40) return "APEX_TRAILING";
+            if (profitPct >= 30) return "PROFIT_LOCK_30";
+            if (profitPct >= 20) return "PROFIT_LOCK_20";
+            if (profitPct >= 10) return "PROFIT_LOCK_10";
+            if (profitPct >= 0) return "BREAKEVEN_RATCHET";
+            return "NORMAL";
+        }
+
+        public static ProfitLockResult ComputeTrailingStop(
+            double profitPct,
+            double highestClose,
+            double atr20,
+            double? ratchetStop,
+            double averageCost)
+        {
+            string stage = ClassifyProfitLockStage(profitPct);
+            double baseStop = ratchetStop ?? averageCost;
+            double? trailingStop = null;
+            string tpAction = "적용 안함";
+
+            if (stage == "APEX_SUPER")
+            {
+                double raw = highestClose - 1.2 * atr20;
+                trailingStop = KrxTickNormalizer.NormalizeTick(Math.Max(baseStop, raw));
+                tpAction = "강제 10% 익절 권고";
+            }
+            else if (stage == "APEX_TRAILING")
+            {
+                double raw = highestClose - 1.5 * atr20;
+                trailingStop = KrxTickNormalizer.NormalizeTick(Math.Max(baseStop, raw));
+                tpAction = "부분익절 검토";
+            }
+            else if (stage == "PROFIT_LOCK_30" || stage == "PROFIT_LOCK_20")
+            {
+                double raw = highestClose - 2.0 * atr20;
+                trailingStop = KrxTickNormalizer.NormalizeTick(Math.Max(baseStop, raw));
+                tpAction = "래칫 유지";
+            }
+
+            return new ProfitLockResult
+            {
+                RatchetStage = stage,
+                AutoTrailingStop = trailingStop,
+                TpLadderAction = tpAction,
+                ApexSuperActive = stage == "APEX_SUPER"
+            };
+        }
+    }
+}