review: full assessment of nxos_config.rs network module

[adolago]

Summary

The NX-OS network module (src/modules/network/nxos_config.rs) was only partially reviewed during the beta readiness audit due to file size. The NxApiTransport and SSH transport implementations need a complete review.

What needs review

1. Full execute() implementation quality
2. NX-API (JSON-RPC) transport error handling
3. SSH transport command injection prevention
4. Check mode support completeness
5. Unit test coverage adequacy

Acceptance criteria

• Full code review completed
• Any identified issues filed as separate issues
• Module rated READY or issues tracked for resolution

Priority

Medium