Regression Surface Budget

Regression Surface Budget treats every automated check as a recurring cost, not a one-time build. Each test you add to a client site keeps charging rent: it must be updated when markup shifts, when a third-party script changes, and when the framework version moves. Agencies on fixed-bid retainers feel this first, because the build invoice clears once while the upkeep lands every sprint. The discipline is to cap the surface deliberately. Visual feedback capture through BugHerd keeps client annotations cheap and human-readable, so you are not encoding every subjective note as a brittle assertion. Where automation does earn its keep, target revenue paths rather than cosmetic detail: Mystra exercises signup, email delivery, and Stripe checkout on each deploy, which is a small surface guarding the highest-value failure. CueCast adds recorded workflow replay without a code framework to maintain. Budget the surface, then spend it where breakage costs the client money.