test_display.py 363 -> 204, with the supply maths and its display going
to test_supply_levels.py. test_usb_query.py 328 -> 126, with the retry
and sequencing tests going to test_usb_query_sequence.py.
That removed the last reader of the six _supply names through display,
so display.py's __all__ shrinks to the two public entry points and the
stale comment about tests reaching them there is gone. Checked by grep
across python_pkg and an import-time attribute probe, not by the suite.
The first run after the usb_query split reported 393: TestParsePagecount
sat between the two moved classes and travelled with them. Fixed.
Pass count is 402 before and after.
Co-Authored-By: Claude Opus 5 (1M context) <noreply@anthropic.com>
Claude-Session: https://claude.ai/code/session_011w2Pj4Ek3ZNMQVYcFHgXDY