A.3:1 - Intent

Establish a substrate-neutral way to say which system performed one dated world-side Work occurrence by enacting which U.Method, under which exact U.SystemRoleAssignment when assignment-bound attribution is needed, and which separately governed method-description, capability, work-to-change, evidence, or aggregation claims the current use additionally relies on—without self-magic and without blurring run-independent semantics, the occurrence, and an episteme that describes or asserts it. The pattern keeps the Transformer Quartet object families distinct; it does not require every change claim or Work assertion to carry all four. A.3.4 independently identifies an actual bounded change; that identification alone establishes no acting system, agency, role assignment, method, or work. A.3 builds directly on System-Role Kinds and Assignments (A.2) and the direct Work and episteme rules in A.15.1 and C.2.1 and is guarded by Strict Distinction (A.7) and Evidence Graph Referring (A.10).