Babysit (single PR)

One invocation = one health pass over the single PR this branch is on (or the PR passed via --pr N): keep it mergeable, CI green, and review comments handled. Designed to be driven by /loop /babysit (dynamic mode). Do NOT nest another per-tick scheduler or PR-watching loop in the same session — two schedulers would fight over the session's single wakeup.

You are already on the PR's branch (that is the whole premise), so fixes happen directly in this worktree — no git worktree add, no temp checkout.

Drafts are in scope: you invoked this on the PR you are sitting on, so it works the PR whether or not it is a draft (isDraft is reported so you can call it out). The never-rewrite-history rule below still holds regardless.

Scan first (one read-only command)

Start every tick with the bundled scanner. It does all the deterministic data-gathering so you spend tokens on fixes, not on fetching and parsing: