X_DOC_MIGRATION_RANGE_STALE
Means
a walkthrough cites an entry or upgrade step it has no row for
Typical cause
an Entries cell of The upgrade, top to bottom, a package range in the Entry by entry intro, or a lead callout ("entries 88–90, upgrade steps 32–34") names a number the walkthrough's own table does not have — or the intro's package ranges leave a row uncovered or cover one twice
Fix
bun run scripts/changelog-check.ts --json — it names the line in wiki/Upgrading.md to correct