feat: complete legacy parity and modernize operator UI

tests/MBN_STOCK_WEBVIEW.LegacyWeb.Tests/LegacyComparisonImportWebTests.cs

@@ -0,0 +1,60 @@
+namespace MBN_STOCK_WEBVIEW.LegacyWeb.Tests;
+
+public sealed class LegacyComparisonImportWebTests
+{
+    private static readonly string RepositoryRoot = FindRepositoryRoot();
+    private static readonly string App = Read("src", "MBN_STOCK_WEBVIEW.LegacyParityApp", "Web", "app.js");
+    private static readonly string Styles = Read("src", "MBN_STOCK_WEBVIEW.LegacyParityApp", "Web", "styles.css");
+    private static readonly string MainWindow = Read("src", "MBN_STOCK_WEBVIEW.LegacyParityApp", "MainWindow.xaml.cs");
+    private static readonly string Bridge = Read("src", "MBN_STOCK_WEBVIEW.LegacyBridge", "LegacyBridgeProtocol.cs");
+
+    [Fact]
+    public void Comparison_workspace_exposes_explicit_fixed_source_merge_and_result()
+    {
+        Assert.Contains("importLegacy.textContent = \"원본 비교쌍 가져오기\"", App,
+            StringComparison.Ordinal);
+        Assert.Contains("importLegacy.dataset.comparisonImport = \"true\"", App,
+            StringComparison.Ordinal);
+        Assert.Contains("send(\"import-legacy-comparison-pairs\", {})", App,
+            StringComparison.Ordinal);
+        Assert.Contains("comparison.lastImport.sourceRowCount", App,
+            StringComparison.Ordinal);
+        Assert.Contains("comparison.lastImport.addedPairCount", App,
+            StringComparison.Ordinal);
+        Assert.Contains(".comparison-import-status", Styles, StringComparison.Ordinal);
+        Assert.DoesNotContain("comparisonImportPath", App, StringComparison.Ordinal);
+    }
+
+    [Fact]
+    public void Native_composition_owns_the_trusted_source_and_database_resolver()
+    {
+        Assert.Contains("TrustedLegacyComparisonFileSource.CreateDefault()", MainWindow,
+            StringComparison.Ordinal);
+        Assert.Contains("new LegacyComparisonPairImportService(", MainWindow,
+            StringComparison.Ordinal);
+        Assert.Contains("comparisonImporter)", MainWindow, StringComparison.Ordinal);
+        Assert.Contains("\"import-legacy-comparison-pairs\" => ParseComparisonImport(payload)",
+            Bridge, StringComparison.Ordinal);
+        Assert.Contains("HasOnlyProperties(payload) ? new LegacyImportComparisonPairsIntent()",
+            Bridge, StringComparison.Ordinal);
+    }
+
+    private static string Read(params string[] segments) =>
+        File.ReadAllText(Path.Combine([RepositoryRoot, .. segments]));
+
+    private static string FindRepositoryRoot()
+    {
+        var directory = new DirectoryInfo(AppContext.BaseDirectory);
+        while (directory is not null)
+        {
+            if (File.Exists(Path.Combine(directory.FullName, "MBN_STOCK_WEBVIEW.sln")))
+            {
+                return directory.FullName;
+            }
+
+            directory = directory.Parent;
+        }
+
+        throw new DirectoryNotFoundException("Repository root was not found.");
+    }
+}