T-413 added 'mcp' (among others) to kClideOwnedCommands, which the
composer unions onto the suggestion list (T-162) — '/m' now yields
[mcp, memory, model], so reaching 'model' takes two arrow-downs. The
test's intent (selection moves; Enter completes, never submits) is
unchanged.
Board: T-158 annotated — /usage is answerable headless on 2.1.175,
unblocking its upstream blocker (see T-415).
Co-Authored-By: Claude Fable 5 <noreply@anthropic.com>
jpmschweitzerandClaude Fable 5
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