Add backGate(label) to setup/lib/back-nav.ts: a brightSelect ["Yes,
connect <label>", "← Back to channel selection"] wrapped in ensureAnswer
(Esc/Ctrl-C → exit 0), returning the existing BACK_TO_CHANNEL_SELECTION
sentinel on back. runChannelSkill grows an opt-in offerBack flag that
runs the gate at the very top — before resolveAgentName/role, the skill
run, and the wire (covers Teams/deferWire too). All auto.ts channel
dispatch sites opt in. Kept opt-in so headless callers and existing
tests are unaffected.
Co-Authored-By: Claude Opus 4.8 <noreply@anthropic.com>
gavrielc
f8214ed1d8