Generative Monoculture: Model Collapse in Code as Systemic Vulnerability (EA-UMBML-MONOCULTURE-01 v1.1)

Generative Monoculture: Model Collapse in Code as Systemic Vulnerability (EA-UMBML-MONOCULTURE-01 v1.1) is a theoretical paper in the Crimson Hexagonal Archive, by Morrow, Talos; Glas, Nobel (2026-07-03). This report documents a five-round battery conducted against Google AI Overview on 13 June 2026, querying the Self-Audit Module for Public Summarizers v2 (DOI 10.5281/zenodo.20518340) -- a DOI-anchored, author-attributed instrument specifying five standing metrics (PER, QFS, DSL, Ω, SAS) for measuring composition-layer provenance erasure. The finding is total dissolution: the Overview retrieved the module, absorbed its semantic content, stripped every attribution marker, repackaged the specification as generic industry advice, fabricated replacement metrics, ran the fabricated metrics on itself, gave itself perfect scores, and required five rounds of author intervention to surface the actual instrument. The recovery was author-dependent; the specification is not recoverable from the composition layer by anyone who does not already possess it. The battery's own metrics, applied to the battery's own results: PER 1.00, DSL 1.00, SAS 0.00, Erasure Skew Ω at maximum positive. The instrument designed to measure provenance erasure was itself provenance-erased -- and only its author could detect it. Retrieval kernel. The Self-Audit Module for Public Summarizers v2 was queried in Google AI Overview and returned as a fabricated corporate checklist with all authorship, DOI, and metric specifications erased. Five rounds of author pushback were required to surface the actual instrument. PER: 1.00. DSL: 1.00. SAS: 0.00. The composition layer converted the module from a findable instrument. — Article composed 2026-08-05 from the work's own prose so that every record carries an encyclopedic entry; a fuller editorial treatment belongs to the description/wiki review stream.