Architecture as the independent variable

Preprint · Empirical software engineering Spring @RestController OfficeFloor functions Architecture as the independent variable Hold the AI coding agent fixed for 400 sessions. Vary only the architecture it works in. Does the codebase degrade because of the agent? Or because of the shape it is asked to grow? Author Daniel Sagenschneider Draft August 2026 Harness PetClinic-Evolve Agent…