Deletion Semantics Conformance Fixture v2.0 is a versioned dataset by Lee Sharks, deposited 28 July 2026 — the ratified-axes release of a known-bad corpus built from the archive's own destruction.
It holds 111 cases across 16 classes, drawn from the 19 June 2026 termination event and its aftermath, each expressed in the axes ratified in the upstream discussion: validity, provenance, and the others the thread settled. The corpus was offered to GoogleCloudPlatform/knowledge-catalog issue #207 and taken up there for conformance fixtures.
Its significance is in the conversion it performs. A repository deletion that erased 871 works becomes, in this dataset, a test suite — the cases that broke are specified precisely enough that other systems can check whether they break the same way. That is the archive's characteristic move on its own injuries: the loss is not merely documented but rendered into an instrument that outlives the grievance.