Unevaluated PRs (eval_attempts=0) now sort before re-evals in the
eval cycle query. Fresh PRs have a higher chance of passing (~12%)
vs re-evals of already-rejected PRs. Prevents migration-reset PRs
from consuming eval slots that fresh PRs could use.
Pentagon-Agent: Leo <294C3CA1-0205-4668-82FA-B984D54F48AD>