The client menu gains "Kick Client from Channel", "Kick Client from
Server" and "Ban Client", each asking for a reason first. Kicks use a
shared prompt that enforces the protocol's 40-character limit; the ban
dialog adds a duration, whose unit dropdown ends in "Permanent" — the
zero-length ban the server understands.
Co-Authored-By: Claude Opus 5 <noreply@anthropic.com>
