- Add comprehensive README with wiring diagram, CLI reference, and examples
- Fix supply VISA timeout during sweeps: read supply/load before meter wait,
add retry wrapper for instrument queries, keepalive ping during auto-range
- Fix load_setpoint not recorded in voltage sweep CSV
- Add load current sweep command (sweep-load)
- Increase HIOKI auto-range wait to 30 retries x 2s
Co-Authored-By: Claude Opus 4.6 <noreply@anthropic.com>
