fix: tidy statics, instance, stretch43, fill/find_if ranges, NOLINT externs

source/core/system/director.cpp

@@ -32,7 +32,7 @@
 #include "game/scenes/secreta_scene.hpp"
 #include "game/scenes/slides_scene.hpp"
 
-std::unique_ptr<Director> Director::instance_;
+std::unique_ptr<Director> Director::instance;
 
 Director::~Director() = default;
 
@@ -76,7 +76,7 @@ auto Director::createNextScene() const -> std::unique_ptr<Scenes::Scene> {
 }
 
 void Director::init() {
-    instance_ = std::unique_ptr<Director>(new Director());
+    instance = std::unique_ptr<Director>(new Director());
     Gamepad::init();
 
     // Registre d'escenes. Cada entrada = un state_key (`num_piramide`)
@@ -113,11 +113,11 @@ void Director::init() {
 
 void Director::destroy() {
     Gamepad::destroy();
-    instance_.reset();
+    instance.reset();
 }
 
 auto Director::get() -> Director* {
-    return instance_.get();
+    return instance.get();
 }
 
 void Director::togglePause() {