diff --git a/src/AcDream.App/RuntimeOptions.cs b/src/AcDream.App/RuntimeOptions.cs
index 91772711..155cd8ba 100644
--- a/src/AcDream.App/RuntimeOptions.cs
+++ b/src/AcDream.App/RuntimeOptions.cs
@@ -245,6 +245,14 @@ public sealed record RuntimeOptions(
             PreparedAssetPath = NullIfEmpty(content?.PreparedAssetPath)
                 ?? baseOptions.PreparedAssetPath,
             LiveMode = true,
+            // Campaign LA gate round 2: a session-config launch IS a product
+            // launch — the retail UI is the shipped UI, not a dev option.
+            // ACDREAM_RETAIL_UI remains the opt-in for env-var dev launches,
+            // but the launcher strips ACDREAM_* from children (LA11 isolation),
+            // so inheriting the env default here shipped a client with world
+            // rendering and NO interface at all — the guiSelect flow's
+            // character screen included.
+            RetailUi = true,
             LiveHost = session.Endpoint.Host,
             LivePort = session.Endpoint.Port,
             LiveUser = session.Account,
diff --git a/tests/AcDream.App.Tests/Configuration/RuntimeOptionsSessionConfigTests.cs b/tests/AcDream.App.Tests/Configuration/RuntimeOptionsSessionConfigTests.cs
index ceba50ad..7fafe02f 100644
--- a/tests/AcDream.App.Tests/Configuration/RuntimeOptionsSessionConfigTests.cs
+++ b/tests/AcDream.App.Tests/Configuration/RuntimeOptionsSessionConfigTests.cs
@@ -59,6 +59,11 @@ public sealed class RuntimeOptionsSessionConfigTests
         Assert.Equal(["PluginA", "PluginB"], options.Plugins);
         Assert.Equal(["/tell x, hi"], options.LoginCommands);
         Assert.Equal(900, options.LoginCommandDelayMs);
+        // Gate round 2: a session-config launch is a product launch — the
+        // retail UI must be ON even though the env func above returns null
+        // for everything (the launcher strips ACDREAM_* from children, so
+        // env inheritance here shipped a client with no interface at all).
+        Assert.True(options.RetailUi);
     }
 
     [Fact]