The first-time setup picker only listed seven channels with bash
installers. Users wanting to install one of the other channels (matrix,
github, linear, webex, etc.) had no entry point from the picker and had
to know to run /add-<name> from Claude Code afterwards.
Add an "Other…" option that prompts for a free-text name, normalizes it
(accepts "matrix", "add-matrix", or "/add-matrix"), and prints a hint
telling the user to run /add-<name> from Claude Code after setup
finishes. The verify step's "What's left" panel already covers the
empty-channels case, so the user is not left thinking the channel was
wired.
Co-Authored-By: Claude Opus 4.7 (1M context) <noreply@anthropic.com>
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