refactor: enhance GameStateStore integration and improve skill management

Autoloads/GameStateStore.cs

@@ -143,7 +143,7 @@ public partial class GameStateStore : Node
     }
 
     /// <summary>
-    /// Unlocks a skill in the session.
+    /// Unlocks a skill in the session (lost on death, committed on level complete).
     /// </summary>
     public void UnlockSkillInSession(SkillData skill)
     {
@@ -151,6 +151,30 @@ public partial class GameStateStore : Node
             Session.SkillsUnlocked.Add(skill);
     }
 
+    /// <summary>
+    /// Permanently unlocks a skill directly in player state (bypasses session, e.g. console commands).
+    /// </summary>
+    public void UnlockSkillPermanently(SkillData skill)
+    {
+        if (!Player.UnlockedSkills.Contains(skill))
+            Player.UnlockedSkills.Add(skill);
+    }
+
+    /// <summary>
+    /// Removes a permanently unlocked skill from player state by name.
+    /// </summary>
+    public void RemoveUnlockedSkill(string skillName)
+    {
+        for (int i = 0; i < Player.UnlockedSkills.Count; i++)
+        {
+            if (Player.UnlockedSkills[i].Name == skillName)
+            {
+                Player.UnlockedSkills.RemoveAt(i);
+                return;
+            }
+        }
+    }
+
     /// <summary>
     /// Commits session skills to player state.
     /// </summary>
@@ -179,6 +203,26 @@ public partial class GameStateStore : Node
 
     #endregion
 
+    #region Statistics Operations
+
+    public void IncrementStat(string name, int amount = 1)
+    {
+        if (Player.Statistics.TryGetValue(name, out var current))
+            Player.Statistics[name] = current + amount;
+        else
+            Player.Statistics[name] = amount;
+    }
+
+    public void SetStat(string name, int value) => Player.Statistics[name] = value;
+
+    public int GetStat(string name) =>
+        Player.Statistics.TryGetValue(name, out var value) ? value : 0;
+
+    public System.Collections.Generic.Dictionary<string, int> GetAllStats() =>
+        new(Player.Statistics);
+
+    #endregion
+
     #region Reset Operations
 
     /// <summary>