refactor: Replace hardcoded node paths with constants and remove ScoreComponent.

scripts/components/PlayerDeathComponent.cs

@@ -1,4 +1,5 @@
 using Godot;
+using Mr.BrickAdventures;
 using Mr.BrickAdventures.Autoloads;
 
 namespace Mr.BrickAdventures.scripts.components;
@@ -10,12 +11,12 @@ public partial class PlayerDeathComponent : Node2D
     [Export] public PackedScene DeathEffect { get; set; }
     [Export] public HealthComponent HealthComponent { get; set; }
     [Export] public Vector2 EffectScale { get; set; } = new Vector2(1.5f, 1.5f);
-    
+
     private GameManager _gameManager;
 
     public override void _Ready()
     {
-        _gameManager = GetNode<GameManager>("/root/GameManager");
+        _gameManager = GetNode<GameManager>(Constants.GameManagerPath);
         HealthComponent.Death += OnDeath;
     }
 
@@ -30,7 +31,7 @@ public partial class PlayerDeathComponent : Node2D
             effect.GlobalPosition = GlobalPosition;
             effect.Scale = EffectScale;
         }
-        
+
         _gameManager.RemoveLives(1);
         _gameManager.ResetCurrentSessionState();
     }