wake: come back up

Read .claude/skills/cool-down/SKILL.md and follow its "Waking up" section. That is this
skill's whole content. Each rule there carries its own Waking note, so the way back up sits
beside the rule it undoes and the two cannot drift apart.

Three things this skill adds:

Only the operator wakes a session, in their own words. "Carry on" or "resume" is enough, and
so are /do-next and /iterate, which cannot do their job while cool-down is on and so run this
skill first. Silence is not consent, an idle hour is not consent, and a green PR is not consent.

The steps run in order, because each depends on the one before. If any cannot be completed,
say which and why and stay cool.

Waking ends with /board, as cooling down does, and the same four-line report: agents,
branches, board, next. If waking takes longer than 60 minutes, render at that point anyway and
carry on.

If cool-down is not on (no marker under ## In flight in NEXT.md), say so and do nothing.