Lint: rename públicos al inglés + refactor cognitive-complexity + unused-includes

Identifier-naming: rename de métodos públicos y cross-file al inglés
(camelBack), traducción de campos y locales en el proceso (TitleShip,
StageManager, SpawnController, ShipAnimator, helpers de PlayArea, etc.).

Refactor por cognitive-complexity (>25): GameScene::draw (59→3) con 9
helpers de estado, PhysicsWorld::resolveBodyCollisions (35→5) extrayendo
resolveBodyPair, Options::load{Window,Physics,Audio}ConfigFromYaml
(32/49/57→5/2/3) con templates readField, TitleScene::update (68→4) con
5 sub-pasos por estado + handleSkipInput/handleStartInput +
triggerExitForJoinedPlayers, DebrisManager::explode (39→3) con
extractSegments/spawnDebris/applyAngularVelocity/applyVisualRotation.

use-anyofallof: bucles → std::ranges::any_of/all_of en Input,
ShipAnimator y SpawnController.

readability-static-accessed-through-instance: Director::run y
VectorText::getTextWidth/Height invocados por clase.

readability-convert-member-functions-to-static: ResourcePack::decryptData.

unused-includes: eliminación de <utility>, <cstdint>, <vector>,
<iostream>, defaults.hpp y otros no usados directamente en headers y
unidades de traducción. Restablecido core/defaults.hpp en title_scene.cpp
(falsa "unused" del header).

Bug fix: eliminado isActive() duplicado en Bullet (redeclaración tras
rename de esta_activa→isActive que chocaba con el override de Entity).

Co-Authored-By: Claude Opus 4.7 (1M context) <noreply@anthropic.com>

source/core/rendering/shape_renderer.hpp

@@ -29,7 +29,7 @@ struct Rotation3D {
               yaw(y),
               roll(r) {}
 
-        [[nodiscard]] auto has_rotation() const -> bool {
+        [[nodiscard]] auto hasRotation() const -> bool {
             return pitch != 0.0F || yaw != 0.0F || roll != 0.0F;
         }
 };
@@ -42,7 +42,7 @@ struct Rotation3D {
 // - scale: factor de scale (1.0 = mida original)
 // - progress: progrés de l'animación (0.0-1.0, default 1.0 = tot visible)
 // - brightness: factor de brightness (0.0-1.0, default 1.0 = màxima brightness)
-void render_shape(Rendering::Renderer* renderer,
+void renderShape(Rendering::Renderer* renderer,
     const std::shared_ptr<Graphics::Shape>& shape,
     const Vec2& position,
     float angle,