Investigate ssh2 not supporting ed25519 keys

[AlephNotation]

Problem

The ssh2 library appears to have issues with ed25519 keys. This needs investigation to understand the root cause and potential workarounds.

Context

• ssh2 is used for SSH connections to Vers VMs
• ed25519 is a modern, secure key type that many users prefer
• Users with ed25519 keys may experience connection failures

Tasks

• Reproduce the issue with ed25519 keys
• Check ssh2 library documentation and issues for known limitations
• Investigate if newer versions of ssh2 have better support
• Document workarounds (e.g., using RSA keys instead)
• Consider alternative SSH libraries if needed

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