$ patch -o /tmp/bridge_broken.py packs/variance-bridge/skills/revenue-bridge/scripts/bridge.py examples/ch09/fixtures/no-decline.patch
patching file /tmp/bridge_broken.py (read from packs/variance-bridge/skills/revenue-bridge/scripts/bridge.py)
$ python3 /tmp/bridge_broken.py --input data/interstationary/customers_fy24_fy25.csv --output /tmp/run/output/bridge.json
error: bridge does not reconcile; do not report these figures
exit 3
$ python3 -c "import json; print(json.load(open('/tmp/run/output/bridge.json'))['identity'])"
{'ok': False, 'lhs': '11681700.00', 'cy': '11238378.00'}
