Vouch request: nkch1k

[nkch1k]

What do you want to work on?

Hey! I'd like to work on issue number #4209: VM sandbox that was never stopped ends in Error after a gateway restart, and the only way out is deleting it.

• My understanding: on first launch, the VM driver saves a random token - after a restart, the gateway sends its own ID, and the driver rejects the mismatch.
• The change: make the first launch save the gateway's ID, handle sandboxes created before the fix, and add a regression test.

Why this change?

I personally work with the same setup, so it affects me, but more than that, I enjoy this project, and in the future, I'd like to continue contributing in sandboxes/policy areas

Checklist

• I wrote this request myself (not AI-generated)
• I have read CONTRIBUTING.md