PR loop

Arm a recurring pass of respond-to-comments over one PR, and disarm it once two consecutive passes find nothing new.

Two entry points. /pr-loop tick <PR> is the internal one the timer fires — if the first argument is tick, skip to Tick.

Arm

1. Resolve the PR

In order, stop at the first that works:

1. A PR number given as an argument.
2. gh pr view --json number -q .number — the PR for the current branch.
3. A PR created earlier in this conversation.
4. None of the above: create one with the pr-description skill, then use its number.