Clean up k-wave files

Closes #435

Author: peterhollender

src/openlifu/sim/kwave_if.py

@@ -2,6 +2,7 @@
 
 import logging
 from copy import deepcopy
+from pathlib import Path
 from typing import List
 
 import numpy as np
@@ -222,6 +223,13 @@ def run_simulation(arr: xdc.Transducer,
                          coords=[pcoords[dim] for dim in ['t','x','y','z']],
                          attrs={'units':'Pa', 'long_name':'Pressure'})
 
+    # clean up temporary files created by k-wave
+    for filename in [simulation_options.input_filename, simulation_options.output_filename]:
+        try:
+            Path(filename).unlink(missing_ok=True)
+        except Exception as e:
+            logging.warning(f"Could not remove temporary file {filename}: {e}")
+
     ds = xa.Dataset(ds_dict)
     if return_kwave_outputs and return_kwave_inputs:
         return ds, output, inputs