feat(render): implement Campaign AR and terrain fidelity

src/AcDream.App/UI/RetailUiRuntime.cs

@@ -224,7 +224,11 @@ public sealed record OptionsRuntimeBindings(
     Func<DisplaySettings> LoadDisplay,
     Action<DisplaySettings> SaveDisplay,
     Func<AudioSettings> LoadAudio,
-    Action<AudioSettings> SaveAudio);
+    Action<AudioSettings> SaveAudio,
+    Func<IReadOnlyList<Layout.ConfigOptionsPageController.RenderPackChoice>>?
+        LoadRenderPackChoices = null,
+    Func<long>? LoadRenderPackCatalogRevision = null,
+    Func<string?>? LoadRenderPackFailureNotice = null);
 
 /// <summary>
 /// Campaign FA slice FA3: the social panel's (Friends/Allegiance/
@@ -2884,7 +2888,18 @@ public sealed class RetailUiRuntime : IDisposable
                     // silently clobber CH6's filter/opacity edits with a
                     // stale snapshot the next time either surface saves.
                     LoadChat: () => _bindings.Chat.Store?.LoadChat() ?? ChatSettings.Default,
-                    SaveChat: chat => _bindings.Chat.Store?.SaveChat(chat)),
+                    SaveChat: chat => _bindings.Chat.Store?.SaveChat(chat))
+                {
+                    RenderPacks = _bindings.Options.LoadRenderPackChoices is { } load
+                        ? new Layout.ConfigOptionsPageController.RenderPackBindings(load)
+                        {
+                            LoadRevision =
+                                _bindings.Options.LoadRenderPackCatalogRevision,
+                            LoadFailureNotice =
+                                _bindings.Options.LoadRenderPackFailureNotice,
+                        }
+                        : null,
+                },
                 // #378: the eight Config-tab dropdown menus need the SAME
                 // sprite/font resolvers every other retail-menu consumer
                 // (ChatWindowController's channel menu, VendorUiController's