Fix the fucking first and last index selection logic

DD2Switcher/Program.cs

@@ -19,20 +19,25 @@ namespace DD2Switcher {
         public static void UntrackWindow(int index) {
             if (index >= 0 && index < NumProc) {
                 windows[index] = null;
-                // Compact the array by shifting non-null elements to the left
-                for (int i = index; i < NumProc - 1; i++) {
-                    windows[i] = windows[i + 1];
-                }
-                windows[NumProc - 1] = null;
 
                 // Update ActiveIndex if needed
                 if (ActiveIndex == index) {
                     ActiveIndex = -1;
-                } else if (ActiveIndex > index) {
-                    ActiveIndex--;
+                }
+
+                // Update first/last indices if needed
+                if (FirstIndex == index) {
+                    FirstIndex = -1;
+                }
+                if (LastIndex == index) {
+                    LastIndex = -1;
                 }
             }
         }
+
+        // Static properties for first/last selection persistence
+        public static int FirstIndex { get; set; } = -1;
+        public static int LastIndex { get; set; } = -1;
         private static int ActiveIndex = -1;
         private static bool AltPressed = false;