fix: allow safe fresh-clone DryRun builds

src/MBN_STOCK_WEBVIEW.Playout/Configuration/PlayoutOptionsLoader.cs

@@ -22,8 +22,17 @@ public static class PlayoutOptionsLoader
     public static PlayoutOptions Load(
         string? path = null,
         string? operatorSceneDirectory = null,
-        string? operatorBackgroundDirectory = null)
+        string? operatorBackgroundDirectory = null,
+        bool forceSafeDryRun = false)
     {
+        // Source-only builds are for code/UI review on machines without the
+        // approved runtime tree. Do not consume a previous machine-local playout
+        // profile or process override in that build flavor.
+        if (forceSafeDryRun)
+        {
+            return new PlayoutOptions();
+        }
+
         var options = LoadJson(path ?? DefaultPath);
         ApplyOperatorAssetOverrides(
             options,