refactor(defaults): centralitza constants de bullet, ship, enemy, hud i notifier

source/game/entities/bullet.cpp

@@ -16,12 +16,6 @@
 #include "core/types.hpp"
 #include "game/constants.hpp"
 
-namespace {
-    // Velocidad escalar de las balas (px/s). Conserva el feel del Pascal original
-    // (7 px/frame × 20 FPS = 140 px/s).
-    constexpr float BULLET_SPEED = 140.0F;
-}  // namespace
-
 Bullet::Bullet(Rendering::Renderer* renderer)
     : Entity(renderer) {
     // Brightness específico para balas
@@ -80,7 +74,7 @@ void Bullet::disparar(const Vec2& position, float angle, uint8_t owner_id) {
     body_.angle = angle;
     const float DIR_X = std::cos(angle - (Constants::PI / 2.0F));
     const float DIR_Y = std::sin(angle - (Constants::PI / 2.0F));
-    body_.velocity = Vec2{.x = DIR_X * BULLET_SPEED, .y = DIR_Y * BULLET_SPEED};
+    body_.velocity = Vec2{.x = DIR_X * Defaults::Game::BULLET_SPEED, .y = DIR_Y * Defaults::Game::BULLET_SPEED};
     body_.angular_velocity = 0.0F;
     body_.clearAccumulators();