What happens when the tools change under us?

The tools underneath a commercial system now change every few months whether anyone asked them to: features move, defaults reset, something is renamed, an update quietly switches a behaviour the workflow depended on. Left alone, each of those is a small breakage that somebody works around, and the workarounds are how a clean system decays into the spreadsheet it replaced. The monthly check treats the tools as part of the month: what changed, what that breaks next month if ignored, and what needs adjusting so the team keeps working the same way. Most months that is nothing or nearly nothing; occasionally it is real work, and catching it inside the month is the difference between an adjustment and a rebuild. The team's routine is the thing being protected; the software is allowed to churn underneath it.