import json
from pathlib import Path
p=Path('/tmp/lead-32693-r2/capture-1/project/notebook.ipynb')
n=json.loads(p.read_text())
for c in n['cells']:
 if c['cell_type']=='code':c['outputs'].append({'output_type':'display_data','metadata':{},'data':{'text/html':['<p>Synthetic saved HTML output</p>']}})
p.write_text(json.dumps(n))