Adds a standalone DISABLE TELNET button (no enable counterpart, per
requirement) alongside the existing HTTPS enable/disable toggle. Reuses
the same target/concurrency controls and SSH push flow, backed by a new
"disable_telnet" action mapped to "no ip telnet" on the switch.
Co-Authored-By: Claude Sonnet 5 <noreply@anthropic.com>
Claude-Session: https://claude.ai/code/session_01CLfUJoQTaUePx1m1d2v2j9
dcstephenson