feat(launcher): stabilize prepared content updates

src/AcDream.App/RuntimeOptions.cs

@@ -116,6 +116,12 @@ public sealed record RuntimeOptions(
     /// <see cref="LoginCommands"/>, milliseconds.</summary>
     int LoginCommandDelayMs)
 {
+    public string? PreparedAssetOverlayPath { get; init; }
+
+    public uint? PreparedAssetBaseRecipeVersion { get; init; }
+
+    public uint? PreparedAssetEffectiveRecipeVersion { get; init; }
+
     /// <summary>
     /// Build options from the process environment. Used by
     /// <c>Program.cs</c> at startup.
@@ -272,6 +278,12 @@ public sealed record RuntimeOptions(
         {
             PreparedAssetPath = NullIfEmpty(content?.PreparedAssetPath)
                 ?? baseOptions.PreparedAssetPath,
+            PreparedAssetOverlayPath =
+                NullIfEmpty(content?.PreparedAssetOverlayPath),
+            PreparedAssetBaseRecipeVersion =
+                content?.PreparedAssetBaseRecipeVersion,
+            PreparedAssetEffectiveRecipeVersion =
+                content?.PreparedAssetEffectiveRecipeVersion,
             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.