- Add iftop as runtime dependency in package.nix and flake.nix
- Modify SystemMetrics to calculate network throughput (bytes/second)
- Track previous network stats in MQTT client state for throughput calculation
- Update Home Assistant discovery to show RX/TX throughput sensors
- Replace cumulative byte counters with real-time throughput metrics
- Add proper throughput calculation with time-based differentials
This provides much more useful real-time network monitoring compared
to ever-increasing cumulative byte counts.
🤖 Generated with [Claude Code](https://claude.ai/code)
Co-Authored-By: Claude <noreply@anthropic.com>
ryanandClaude
b8e7c48ecf