Fix pattern border normalization

space_app/board_utils.py

@@ -130,9 +130,6 @@ def normalize_pattern_board(board_ascii: str) -> str:
     normalized: list[str] = [*clue_lines]
     border_iter = iter(border_lines)
 
-    if border_lines:
-        normalized.append(next(border_iter))
-
     for content in content_lines:
         pieces = content.split("|")
         if len(pieces) < 3: