BU74 AAI-06 Engineering Settlement Surfaces in Agentic AI Codebase Settlement Surface, Persistent Knowledge Ledger, and Small-Ontology Closure Samples

This paper develops BU74 AAI-06|Engineering Settlement Surfaces in Agentic AI as the sixth file in the B_U-based Agentic AI series. Its central claim is that Agentic AI reliability does not come from faster generation, larger models, or more autonomous execution, but from engineering settlement surfaces that keep objects, interfaces, states, verification, feedback, cost, and responsibility within the same operational world. The paper examines three engineering samples. First, the codebase settlement surface shows why bad code becomes more expensive in the AI era. Shared design concepts, ubiquitous language, stable interfaces, deep modules, static types, tests, and fast feedback are reclassified as the…