Update app.py

app.py

@@ -296,10 +296,14 @@ def generate_windows_from_selection(selected_indices, window_size, window_type):
     """Generate windows from selected residue indices"""
     if len(selected_indices) < window_size:
         return []
-    if len(selected_indices) == window_size:
-        return selected_indices
     
     windows = []
+
+    
+    if len(selected_indices) == window_size:
+        windows.append(selected_indices)
+        return windows
+        
     if window_type == "contiguous":
         # Only sliding windows
         for i in range(len(selected_indices) - window_size + 1):