Staging vs production drift check

Visual regressions are invisible until a user complains. Instead of clicking through both environments in two browser tabs, extract staging and production and let Dembrandt diff the design tokens. You get a drift score and an itemized list: which colors changed, which font sizes shifted, which spacing steps were added or removed. Run it before every promotion as a release gate, or on a schedule to catch slow drift. The same pattern works for any two environments: a feature branch against main, a white-label theme against the reference theme, or a redesign branch against the current live site.