Make SSH restrictions consistent and allow approved deployments

Problem

A user in Discord #help reported that Unsloth blocks the ssh command but allows SSH connections through Python libraries such as Paramiko

The restriction should apply consistently regardless of how the connection is made

Expected behavior

• Unapproved SSH connections are blocked across commands and Python libraries
• Users can explicitly approve access to a chosen server
• Approved access supports workflows such as asking Unsloth to deploy an application to that server