An AI-built application still depends on packages, services, and operating assumptions that change after delivery. A successful compilation does not tell you whether an update preserved the customer's business workflow. Map important dependencies to the paths they support. Keep reproducible versions and synthetic fixtures that exercise ordinary work and failures. Compare behavior before and after the change, including integration boundaries and recovery. When an update is deferred, record the reason and an owner to revisit it. Make maintenance responsibility and cost explicit in the service scope. Reliable updates need a repeatable business test path, not hope that generated code will continue working indefinitely. Original article explainer. AI-assisted conceptual illustration and neural narration; original synthesized music. Not a human recording or customer result.