Fix rotation bug

Author: Marius1311

src/cellmapper/model/evaluate.py

@@ -292,6 +292,8 @@ def plot_confusion_matrix(
             ax.xaxis.tick_top()
             ax.xaxis.set_label_position("top")
             ax.set_title("")  # Remove title to avoid overlap
+            # Rotate labels to point outward (opposite direction from bottom)
+            plt.setp(ax.get_xticklabels(), rotation=90, ha="left", va="center")
 
         # Add annotation color bars if colors are available
         if show_annotation_colors and labels is not None: