Sheet mirror safety and inventory truth
back-office
What's new
A read-collapse guard blocks a reconcile when a tab reads far below its live baseline, an empty-read guard stops a tab reading zero rows from archiving its whole mirror, an in-flight lock prevents overlapping syncs staling each other, and a cell-count gate stopped large sheets from exhausting memory.
Impact
Written after these failures happened to a real customer, not before. A sync that looks wrong now stops instead of committing.
Upgrade
No action required. Suvi deployments are managed, so this reached your instance automatically.