pub fn summarize_refs(
updated: &[String],
effective_backup_refs: &[String],
github_branches: &[String],
) -> StringExpand description
Build the per-ref summary block printed to the hook’s stdout after a push — one line per pushed ref (in receive order) showing which durable tiers it reached.
Every pushed ref lands on the host (NAS). A ref additionally shows “encrypted
S3” when it matches the effective backup_refs, and “GitHub” when its branch
is among the mirror’s configured branches. ✓ marks a ref that went beyond
NAS; ○ marks a NAS-only ref. The ref column is left-aligned and padded to
the longest pushed ref name (min 14).