refactor(includes): convertir includes relativos a absolutos

- escena_joc.hpp: 7 includes cambiados de ../ a rutas absolutas
- pre-commit hook: añadir validación de includes relativos
- Bloquea commits con includes tipo #include "../foo.hpp"
- Coherencia con CMakeLists.txt (include_directories desde source/)

source/game/escenes/escena_joc.hpp

@@ -11,18 +11,18 @@
 #include <cstdint>
 #include <memory>
 
-#include "../constants.hpp"
-#include "../effects/debris_manager.hpp"
-#include "../effects/gestor_puntuacio_flotant.hpp"
-#include "../entities/bala.hpp"
-#include "../entities/enemic.hpp"
-#include "../entities/nau.hpp"
-#include "../stage_system/stage_manager.hpp"
 #include "core/graphics/vector_text.hpp"
 #include "core/rendering/sdl_manager.hpp"
 #include "core/system/context_escenes.hpp"
 #include "core/system/game_config.hpp"
 #include "core/types.hpp"
+#include "game/constants.hpp"
+#include "game/effects/debris_manager.hpp"
+#include "game/effects/gestor_puntuacio_flotant.hpp"
+#include "game/entities/bala.hpp"
+#include "game/entities/enemic.hpp"
+#include "game/entities/nau.hpp"
+#include "game/stage_system/stage_manager.hpp"
 
 // Game over state machine
 enum class EstatGameOver {