feat: add --direct-enter option to skip to world scene

Support a new CLI flag that launches the app directly into the world scene. If no IP is provided, it starts a local server on the specified port and connects to 127.0.0.1; otherwise it connects to the given IP. With this flag enabled, a port must be specified via -p. Also expose SceneManager::push as public so scenes can be pushed immediately when bypassing the normal menu flow.

include/Cubed/argument.hpp

@@ -13,5 +13,6 @@ struct Argument {
     std::optional<int> log_level;
     std::optional<bool> enable_filelog;
     std::optional<bool> enable_consolelog;
+    std::optional<bool> direct_enter;
 };
 } // namespace Cubed

include/Cubed/scene/scene_manager.hpp

@@ -36,6 +36,7 @@ public:
 
     App& app();
     WorldSceneParam& world_scene_param();
+    void push(SceneType type);
 
 private:
     enum class OperationType { PUSH, POP, CHANGE };
@@ -51,7 +52,7 @@ private:
     std::stack<std::unique_ptr<Scene>> m_scenes;
     void process_operation();
     void change(SceneType type);
-    void push(SceneType type);
+
     void pop(bool re_enter = true);
 
     std::unique_ptr<Scene> create_scene(SceneType);