step 2: banner_scene substituix doBanner() (piràmides 2-5) + helper playMusic compartit

source/core/system/director.cpp

@@ -20,6 +20,7 @@
 #include "game/modulegame.hpp"
 #include "game/modulesequence.hpp"
 #include "game/options.hpp"
+#include "scenes/banner_scene.hpp"
 #include "scenes/mort_scene.hpp"
 #include "scenes/scene.hpp"
 #include "scenes/scene_registry.hpp"
@@ -102,6 +103,11 @@ void Director::init() {
     // rebre aquests states.
     auto& registry = scenes::SceneRegistry::instance();
     registry.registerScene(100, [] { return std::make_unique<scenes::MortScene>(); });
+    // BannerScene cobreix les piràmides 2..5 (el vell doBanner decideix
+    // pel switch intern llegint info::ctx.num_piramide).
+    for (int p = 2; p <= 5; ++p) {
+        registry.registerScene(p, [] { return std::make_unique<scenes::BannerScene>(); });
+    }
 
     GameFiber::init(gameFiberEntry);
 }