TL;DR:012 — THE SAFETY LAYER IS THE THIRD DELETION

TL;DR:012 v2.0. Expanded discursive analysis of a four-layer provenance erasure structure. (1) A Wikidata administrator deletes knowledge-graph entries using a misapplied notability standard. (2) A safety filter in the AI retrieval pipeline drops the Medium article documenting the deletion. (3) The AI summary synthesizes from remaining institutional records, presenting the administrator as a productive contributor. (4) The diagnostic conversation in which the AI identified the mechanism is itself deleted by the platform — share link returns: "this conversation does not exist." Includes ethical analysis of safety layers as PER instruments, the political economy of institutional risk management vs marginal documentation, the compound PER formula across four independent erasure layers, and the full Gemini diagnostic transcript as appendix (the only surviving record of a conversation the platform has classified as nonexistent).