Unknown controller support

runtime/include/controller_mapping_wizard.h

@@ -0,0 +1,21 @@
+#pragma once
+
+#include <SDL3/SDL_events.h>
+
+// Press-to-bind setup for joysticks SDL either doesn't recognize as gamepads or
+// recognizes with a mapping that lacks the analog stick (e.g. raphnet adapters).
+// The wizard produces a standard SDL gamepad mapping, applies it live, and
+// persists it to gamecontrollerdb.txt in the user data directory.
+namespace controller_mapping_wizard {
+
+void LoadPersistedMappings();
+void HandleSdlEvent(const SDL_Event& event);
+
+// Lists devices that need setup inside the controller settings menu.
+void DrawSetupList();
+// Draws the wizard window when active; call once per overlay frame.
+void Draw();
+
+bool IsActive();
+
+} // namespace controller_mapping_wizard