refactor(defaults): renombra VELOCITAT/CANVI_ANGLE/MAX_BALES a anglès

source/game/scenes/game_scene.hpp

@@ -67,7 +67,7 @@ class GameScene final : public Scene {
     std::array<Enemy, Constants::MAX_ORNIS> enemies_;
     // 6 balas: P1=[0,1,2], P2=[3,4,5]. El cast a size_t evita la
     // widening conversion implícita que detecta clang-tidy.
-    std::array<Bullet, static_cast<std::size_t>(Constants::MAX_BALES) * 2> bullets_;
+    std::array<Bullet, static_cast<std::size_t>(Constants::MAX_BULLETS) * 2> bullets_;
     std::array<float, 2> hit_timer_per_player_;  // Death timers per player (seconds)
 
     // Lives and game over system