feat: align legacy operator and playout behavior

tests/MBN_STOCK_WEBVIEW.LegacyWeb.Tests/LegacyRuntimeStockCutMenuNativeContractTests.cs

@@ -0,0 +1,85 @@
+namespace MBN_STOCK_WEBVIEW.LegacyWeb.Tests;
+
+public sealed class LegacyRuntimeStockCutMenuNativeContractTests
+{
+    private static readonly string RepositoryRoot = FindRepositoryRoot();
+    private static readonly string MainWindow = File.ReadAllText(Path.Combine(
+        RepositoryRoot,
+        "src",
+        "MBN_STOCK_WEBVIEW.LegacyParityApp",
+        "MainWindow.xaml.cs"));
+
+    [Fact]
+    public void MainWindowUsesExternalThenPackagedCandidatesAndInjectsResolvedRows()
+    {
+        Assert.Contains(
+            "Environment.SpecialFolder.LocalApplicationData",
+            MainWindow,
+            StringComparison.Ordinal);
+        Assert.Contains("\"MBN_STOCK_WEBVIEW\"", MainWindow, StringComparison.Ordinal);
+        Assert.Contains("\"Res\"", MainWindow, StringComparison.Ordinal);
+        Assert.Contains("\"종목.ini\"", MainWindow, StringComparison.Ordinal);
+        Assert.Contains(
+            "LegacyRuntimeStockCutMenuLoader.ResolveFromCandidates(",
+            MainWindow,
+            StringComparison.Ordinal);
+        Assert.Contains("runtimeCutMenuOverridePath", MainWindow,
+            StringComparison.Ordinal);
+        Assert.Contains("AppContext.BaseDirectory", MainWindow, StringComparison.Ordinal);
+        Assert.Contains("cutRows: cutMenuComposition.Rows", MainWindow,
+            StringComparison.Ordinal);
+        Assert.DoesNotContain("Environment.CurrentDirectory", MainWindow,
+            StringComparison.Ordinal);
+        Assert.DoesNotContain("Directory.GetCurrentDirectory", MainWindow,
+            StringComparison.Ordinal);
+        Assert.DoesNotContain("MBN_STOCK_N", MainWindow, StringComparison.OrdinalIgnoreCase);
+        Assert.DoesNotContain("bin\\Debug\\Res\\종목.ini", MainWindow,
+            StringComparison.OrdinalIgnoreCase);
+    }
+
+    [Fact]
+    public void DatabaseInitializationErrorWinsOverTheSingleCutMenuFallbackWarning()
+    {
+        var errorBranch = MainWindow.IndexOf(
+            "if (initializationError is not null)",
+            StringComparison.Ordinal);
+        var warningBranch = MainWindow.IndexOf(
+            "else if (cutMenuComposition.WarningMessage is { } cutMenuWarning)",
+            errorBranch,
+            StringComparison.Ordinal);
+        var errorReport = MainWindow.IndexOf(
+            "_controller.ReportError(initializationError);",
+            errorBranch,
+            StringComparison.Ordinal);
+        var warningReport = MainWindow.IndexOf(
+            "_controller.ReportWarning(cutMenuWarning);",
+            warningBranch,
+            StringComparison.Ordinal);
+
+        Assert.True(errorBranch >= 0);
+        Assert.True(errorReport > errorBranch);
+        Assert.True(warningBranch > errorReport);
+        Assert.True(warningReport > warningBranch);
+        Assert.Equal(
+            warningReport,
+            MainWindow.LastIndexOf(
+                "_controller.ReportWarning(cutMenuWarning);",
+                StringComparison.Ordinal));
+    }
+
+    private static string FindRepositoryRoot()
+    {
+        var current = new DirectoryInfo(AppContext.BaseDirectory);
+        while (current is not null)
+        {
+            if (File.Exists(Path.Combine(current.FullName, "MBN_STOCK_WEBVIEW.sln")))
+            {
+                return current.FullName;
+            }
+
+            current = current.Parent;
+        }
+
+        throw new DirectoryNotFoundException("Repository root was not found.");
+    }
+}