fix: recover first-run live config conflicts

tests/MBN_STOCK_WEBVIEW.LegacyWeb.Tests/LegacyFirstRunSetupNativeContractTests.cs

@@ -63,6 +63,7 @@ public sealed class LegacyFirstRunSetupNativeContractTests
 
         Assert.Contains("Cuts 폴더 선택", buttons);
         Assert.Contains("Res 폴더 선택", buttons);
+        Assert.Contains("기존 Live 설정 교체 후 다시 시도", buttons);
         Assert.DoesNotContain("INI 파일 선택", source, StringComparison.Ordinal);
         Assert.DoesNotContain("비밀번호", source, StringComparison.Ordinal);
         Assert.DoesNotContain("포트 입력", source, StringComparison.Ordinal);
@@ -124,6 +125,10 @@ public sealed class LegacyFirstRunSetupNativeContractTests
         var setup = File.ReadAllText(Path.Combine(
             AppRoot,
             "FirstRunSetupWindow.xaml.cs"));
+        var initializer = File.ReadAllText(Path.Combine(
+            RepositoryRoot,
+            "scripts",
+            "Initialize-ExistingDevelopmentPc.ps1"));
 
         Assert.Contains(
             "await RunVerifiedSetupAsync(",
@@ -178,13 +183,49 @@ public sealed class LegacyFirstRunSetupNativeContractTests
             setup,
             StringComparison.Ordinal);
         Assert.Contains(
-            "DrainOutputAsync(process.StandardOutput)",
+            "if (replaceLiveConfig)",
             setup,
             StringComparison.Ordinal);
         Assert.Contains(
-            "DrainOutputAsync(process.StandardError)",
+            "AddArgument(\"-ReplaceLiveConfig\")",
             setup,
             StringComparison.Ordinal);
+        Assert.DoesNotContain(
+            "AddArgument(\"-ReplaceRuntimeBinding\")",
+            setup,
+            StringComparison.Ordinal);
+        Assert.DoesNotContain(
+            "AddArgument(\"-ReplaceK3DPin\")",
+            setup,
+            StringComparison.Ordinal);
+        Assert.Contains(
+            "CaptureOutputTailAsync(process.StandardOutput)",
+            setup,
+            StringComparison.Ordinal);
+        Assert.Contains(
+            "CaptureOutputTailAsync(process.StandardError)",
+            setup,
+            StringComparison.Ordinal);
+        Assert.Contains(
+            "MaximumCapturedOutputCharacters = 16 * 1024",
+            setup,
+            StringComparison.Ordinal);
+        Assert.Contains(
+            "RunSetupFromUiAsync(replaceLiveConfig: false)",
+            setup,
+            StringComparison.Ordinal);
+        Assert.Contains(
+            "RunSetupFromUiAsync(replaceLiveConfig: true)",
+            setup,
+            StringComparison.Ordinal);
+        Assert.Contains(
+            "MBN_SETUP_LIVE_CONFIG_REPLACEMENT_REQUIRED",
+            setup,
+            StringComparison.Ordinal);
+        Assert.Contains(
+            "[MBN_SETUP_LIVE_CONFIG_REPLACEMENT_REQUIRED]",
+            initializer,
+            StringComparison.Ordinal);
         Assert.Contains(
             "loaded.Settings.SceneDirectory",
             setup,

tests/MBN_STOCK_WEBVIEW.LegacyWeb.Tests/LegacyRuntimeAssetDeploymentContractTests.cs

@@ -851,7 +851,7 @@ public sealed class LegacyRuntimeAssetDeploymentContractTests
             initializer,
             StringComparison.Ordinal);
         Assert.Contains(
-            "Existing Development Live files differ from the exact requested",
+            "[MBN_SETUP_LIVE_CONFIG_REPLACEMENT_REQUIRED]",
             initializer,
             StringComparison.Ordinal);