Add Quick Use: Shift+RClick usable items when no other inventories open

Co-authored-by: Cursor <cursoragent@cursor.com>

QuickTransfer.cs

@@ -29,7 +29,7 @@ namespace QuickTransfer;
 [Serializable]
 public sealed class Configuration : IPluginConfiguration
 {
-    public int Version { get; set; } = 3;
+    public int Version { get; set; } = 4;
 
     public bool Enabled { get; set; } = true;
     // Default OFF (explicitly requested).
@@ -46,6 +46,8 @@ public sealed class Configuration : IPluginConfiguration
     public bool EnableVendorQuickSell { get; set; } = true;
     public bool AutoConfirmVendorSell { get; set; } = true;
 
+    public bool EnableQuickUse { get; set; } = true;
+
     public void Save() => Plugin.PluginInterface.SavePluginConfig(this);
 }
 
@@ -1392,16 +1394,15 @@ public sealed unsafe class Plugin : IDalamudPlugin
                 Configuration.Version = 3;
                 Configuration.Save();
             }
-            else if (Configuration.Version > 3)
+            else if (Configuration.Version < 4)
+            {
+                Configuration.Version = 4;
+                Configuration.Save();
+            }
+            else if (Configuration.Version > 4)
             {
                 // If the user downgrades, don't overwrite their config; just keep their stored values.
             }
-            else
-            {
-                // Version == 3: still ensure debug isn't accidentally on by default after updates.
-                // (User can re-enable it explicitly.)
-                // No auto-save here to avoid writing config every startup.
-            }
         }
         catch
         {