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

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

@@ -0,0 +1,42 @@
+using System;
+
+namespace QuantEngine.Core.Domain
+{
+    public class PullbackTriggerResult
+    {
+        public string PullbackEntryVerdict { get; set; } = "ABOVE_PULLBACK_ZONE";
+        public string PullbackState { get; set; } = "BLOCKED";
+        public double PullbackEntryTriggerPrice { get; set; }
+        public double PullbackUpperBand { get; set; }
+    }
+
+    public static class PullbackTriggerCalculator
+    {
+        public static PullbackTriggerResult ComputePullbackTrigger(double close, double ma20, double atr20)
+        {
+            double triggerPrice = KrxTickNormalizer.NormalizeTick(ma20 - 0.5 * atr20);
+            double upperBand = ma20 * 1.03;
+            string verdict;
+            string state;
+
+            if (close <= upperBand)
+            {
+                verdict = "PULLBACK_ZONE";
+                state = "PASS";
+            }
+            else
+            {
+                verdict = "ABOVE_PULLBACK_ZONE";
+                state = "BLOCKED";
+            }
+
+            return new PullbackTriggerResult
+            {
+                PullbackEntryVerdict = verdict,
+                PullbackState = state,
+                PullbackEntryTriggerPrice = triggerPrice,
+                PullbackUpperBand = KrxTickNormalizer.NormalizeTick(upperBand)
+            };
+        }
+    }
+}