Add some UI

.claude/docs/architecture.md

@@ -13,10 +13,11 @@ Never instantiate these — access only via the global handle.
 | `OVERWORLD` | Map switching with threaded loading |
 | `COOKING` | Cooking mini-game lifecycle |
 | `SAVE` | Persistence (stub) |
+| `SETTINGS` | Runtime settings — `invertCameraX:bool`, `invertCameraY:bool` |
 | `QUEST` | Quest management (stub) |
 | `CUTSCENE` | Cutscene global (stub) |
 | `DialogueManager` | godot_dialogue_manager v3.10.4 — parses and steps through `.dialogue` files |
-| `UI` | Root UI accessor — `UI.TEXTBOX`, `UI.DEBUG_MENU` |
+| `UI` | Root UI accessor — `UI.TEXTBOX`, `UI.DEBUG_MENU`, `UI.GAME_MENU` |
 
 ## Scene Graph
 
@@ -24,7 +25,7 @@ Never instantiate these — access only via the global handle.
 RootScene (Node3D)
   └─ overworld / battle / cooking / initial   ← one shown at a time
 RootUI (Control, always visible)
-  └─ VNTextbox, DebugMenu
+  └─ VNTextbox, DebugMenu, PauseMenu, GameMenu
 ```
 
 `RootScene` listens to `SCENE.sceneChanged` and shows/hides the correct sub-tree.