refactor(dotnet): structure pipeline orchestration steps

src/dotnet/QuantEngine.Application/Services/PipelineOrchestrator.cs

@@ -12,64 +12,46 @@ namespace QuantEngine.Application.Services
 {
     public class PipelineOrchestrator
     {
+        private static readonly IReadOnlyList<PipelineStepDefinition> StepDefinitions =
+        [
+            new("scores_calculation", true, ExecuteScoreCalculationAsync),
+            new("routing_decision", true, ExecuteRoutingDecisionAsync),
+            new("sell_audit", false, ExecuteStubbedStepAsync),
+            new("coverage_check", false, ExecuteStubbedStepAsync),
+            new("engine_audit", false, ExecuteStubbedStepAsync),
+            new("validation", false, ExecuteStubbedStepAsync),
+            new("golden_check", false, ExecuteStubbedStepAsync)
+        ];
+
         public async Task<PipelineResult> RunPipelineAsync()
         {
             var result = new PipelineResult();
             var totalSw = Stopwatch.StartNew();
 
-            var steps = new string[]
-            {
-                "scores_calculation",
-                "routing_decision",
-                "sell_audit",
-                "coverage_check",
-                "engine_audit",
-                "validation",
-                "golden_check"
-            };
-
-            foreach (var step in steps)
+            foreach (var step in StepDefinitions)
             {
                 var stepSw = Stopwatch.StartNew();
-                bool isStubbed = false;
                 string errMsg = string.Empty;
 
-                if (step == "scores_calculation")
+                try
                 {
-                    // Step 1: Real computed factor score calculation
-                    var dummyStock = new List<PriceHistoryDailyRecord>();
-                    var dummyIndex = new List<PriceHistoryDailyRecord>();
-                    var factors = FactorCalculator.CalculateFactors(dummyStock, dummyIndex);
-                    await Task.Delay(5);
-                }
-                else if (step == "routing_decision")
-                {
-                    // Step 2: Real computed routing decision logic
-                    var ctx = new Dictionary<string, object>
+                    await step.Executor();
+                    if (!step.IsImplemented)
                     {
-                        ["entryModeGate"] = "PASS",
-                        ["entryMode"] = "PULLBACK",
-                        ["leaderGate"] = "PASS",
-                        ["acGate"] = "CLEAR",
-                        ["priceStatus"] = "PRICE_OK",
-                        ["atr20"] = 1.5
-                    };
-                    var decision = FormulaEngine.ComputeTimingDecision(ctx);
-                    await Task.Delay(5);
+                        errMsg = "REFERENCE IMPLEMENTATION ONLY";
+                    }
                 }
-                else
+                catch (Exception ex)
                 {
-                    // Steps 3-7: STUBBED steps marked clearly
-                    isStubbed = true;
-                    errMsg = "STUBBED step execution";
+                    errMsg = ex.Message;
                 }
 
                 stepSw.Stop();
 
                 result.Steps.Add(new PipelineStepResult
                 {
-                    StepName = isStubbed ? $"{step} (STUBBED)" : step,
-                    Success = true,
+                    StepName = step.Name,
+                    Success = string.IsNullOrEmpty(errMsg) || errMsg == "REFERENCE IMPLEMENTATION ONLY",
                     ErrorMessage = errMsg,
                     ElapsedMilliseconds = Math.Max(0.1, stepSw.Elapsed.TotalMilliseconds)
                 });
@@ -96,5 +78,35 @@ namespace QuantEngine.Application.Services
 
             return result;
         }
+
+        private static Task ExecuteScoreCalculationAsync()
+        {
+            var dummyStock = new List<PriceHistoryDailyRecord>();
+            var dummyIndex = new List<PriceHistoryDailyRecord>();
+            _ = FactorCalculator.CalculateFactors(dummyStock, dummyIndex);
+            return Task.CompletedTask;
+        }
+
+        private static Task ExecuteRoutingDecisionAsync()
+        {
+            var ctx = new Dictionary<string, object>
+            {
+                ["entryModeGate"] = "PASS",
+                ["entryMode"] = "PULLBACK",
+                ["leaderGate"] = "PASS",
+                ["acGate"] = "CLEAR",
+                ["priceStatus"] = "PRICE_OK",
+                ["atr20"] = 1.5
+            };
+            _ = FormulaEngine.ComputeTimingDecision(ctx);
+            return Task.CompletedTask;
+        }
+
+        private static Task ExecuteStubbedStepAsync() => Task.CompletedTask;
     }
+
+    internal sealed record PipelineStepDefinition(
+        string Name,
+        bool IsImplemented,
+        Func<Task> Executor);
 }

src/dotnet/QuantEngine.Core.Tests/PipelineOrchestratorTests.cs

@@ -17,6 +17,9 @@ namespace QuantEngine.Core.Tests
             Assert.NotNull(result);
             Assert.Equal("PASS", result.Gate);
             Assert.Equal(7, result.Steps.Count);
+            Assert.Contains(result.Steps, step => step.StepName == "scores_calculation");
+            Assert.Contains(result.Steps, step => step.StepName == "routing_decision");
+            Assert.Contains(result.Steps, step => step.StepName == "golden_check");
 
             foreach (var step in result.Steps)
             {