Implement miracle unlock management and update tooltip logic for MiracleButton

Scripts/Core/GameState.cs

@@ -7,7 +7,7 @@ namespace ParasiticGod.Scripts.Core;
 public class GameState
 {
     private readonly Dictionary<Stat, StatData> _stats = new();
-    private readonly Dictionary<string, MiracleDefinition> _miraclesInHand = new();
+    private readonly HashSet<string> _unlockedMiracleIds = [];
     
     public List<Buff> ActiveBuffs { get; } = [];
     
@@ -36,5 +36,7 @@ public class GameState
     
     public void Unsubscribe(Stat stat, Action<double> listener) => _stats[stat].OnChanged -= listener;
     
-    public Dictionary<string, MiracleDefinition> MiraclesInHand() => _miraclesInHand;
+    public bool IsMiracleUnlocked(string miracleId) => _unlockedMiracleIds.Contains(miracleId);
+    public void AddUnlockedMiracle(string miracleId) => _unlockedMiracleIds.Add(miracleId);
+    public void RemoveUnlockedMiracle(string miracleId) => _unlockedMiracleIds.Remove(miracleId);
 }