♻️ refactor entrypoint

app.py

@@ -87,8 +87,8 @@ def play_donjon(level: Level) -> None:
                 print(f"Au revoir {level.player.name} !")
 
 
-def app(character_name: str) -> None:
+def app() -> None:
-    loaded_character = CharacterBuilder.load_character(character_name)
+    loaded_character = CharacterBuilder.load_character(sys.argv[1] if len(sys.argv) > 1 else "Jamin")
     if not loaded_character:
         sys.exit(-1)
 
@@ -102,4 +102,4 @@ def app(character_name: str) -> None:
 
 # Exemple d'utilisation
 if __name__ == "__main__":
-    app(character_name=sys.argv[1] if len(sys.argv) > 1 else "Jamin")
+    app()