#177 fix: SSH username with spaces + improved SSH error messages

[Anonymous]

Originally created by: kumaakh

Summary

• #144 fix(T1.3): Verify SSH username with spaces passes through intact — audit confirmed agent.username is never shell-interpolated in OS commands; it is passed directly to ssh2 ConnectConfig.username; added schema description noting spaces are allowed; adds unit tests for getSSHConfig and isContainedInWorkFolder
• #150 fix(T1.4): Improve SSH error messages in register_member — adds classifySshError() mapping ssh2 error codes to user-friendly guidance (auth failure, ECONNREFUSED, ETIMEDOUT/ENOTFOUND, OOB); applied in registerMember() at connection failure; verifies onboarding hook only fires on ✅ result; adds 9 unit tests

Test plan

• [ ] CI green (821 tests passing locally)
• [ ] register_member with username containing spaces connects successfully
• [ ] SSH auth failure gives a clear "check credentials" message instead of raw error code
• [ ] ECONNREFUSED gives a "check host/port" message

🤖 Generated with Claude Code

[Anonymous]

Ticket changed by: kumaakh

• status: open --> closed