try to bug fix trimeshing simplification

app.py

@@ -112,7 +112,8 @@ def generate_3d_model(depth, image_path, focallength_px):
     print("Original mesh - vertices: {}, faces: {}".format(len(mesh.vertices), len(mesh.faces)))
 
     # 1. Mesh simplification
-    mesh = mesh.simplify_quadratic_decimation(target_percent=0.8)
+    target_faces = int(len(mesh.faces) * 0.8)  # Simplify to 80% of original faces
+    mesh = mesh.simplify_quadric_decimation(face_count=target_faces)
     print("After simplification - vertices: {}, faces: {}".format(len(mesh.vertices), len(mesh.faces)))
 
     # 2. Remove small disconnected components