## Summary
- Add listening ports widget to server stats, similar to ss -tulnp output
- Backend collector supports ss with netstat fallback for older systems
- Shows TCP/UDP port counts, listening addresses, states, and process names
## Test plan
- [ ] Enable ports widget on a host and verify it displays listening ports
- [ ] Test on system with ss command
- [ ] Test fallback on system without ss (uses netstat)
> Reopened from #457 due to base branch change
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Summary
Test plan