Update app.py

app.py

@@ -575,6 +575,8 @@ def analyze_sequence_comparison(file1, file2, fasta1="", fasta2=""):
         # Generate visualizations
         heatmap_fig = plot_comparative_heatmap(
             shap_diff,
+            seq1_length=len1,
+            seq2_length=len2,
             title=f"SHAP Difference Heatmap (window: {smooth_window})"
         )
         heatmap_img = fig_to_image(heatmap_fig)