完善模块间依赖

src/main.cpp

@@ -1,10 +1,20 @@
 #include "engine/core/game_app.h"
+#include "engine/scene/scene_manager.h"
+#include "game/scene/title_scene.h"
 #include <spdlog/spdlog.h>
 
+void setupInitialScene(engine::scene::SceneManager& scene_manager) {
+    // GameApp在调用run方法之前，先创建并设置初始场景
+    auto title_scene = std::make_unique<game::scene::TitleScene>(scene_manager.getContext(), scene_manager);
+    scene_manager.requestPushScene(std::move(title_scene));
+}
+
+
 int main(int /* argc */, char* /* argv */[]) {
     spdlog::set_level(spdlog::level::off);
 
     engine::core::GameApp app;
+    app.registerSceneSetup(setupInitialScene);
     app.run();
     return 0;
 }