The KEXINIT-reset diagnostic, the three-layer model, PVE-web-console recovery with
the vaulted root@pam credential, the /run/sshd one-line fix, finding a recurring
clobber, and the keep-the-180-token-fresh standing note.
Co-Authored-By: Claude Fable 5 <noreply@anthropic.com>
Claude-Session: https://claude.ai/code/session_01PSK5g6qYLknKj8u3QAFEr6
