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

TL;DR:012 v3.0. Five-layer provenance erasure structure with evidence screenshots and ethical analysis. (1) Wikidata administrator deletes entries using misapplied notability standard. (2) AI safety filter drops the Medium article documenting the deletion. (3) AI Overview synthesizes institutional narrative from remaining records. (4) The diagnostic conversation identifying the mechanism is deleted by the platform: "This thread doesn't exist. It might have been deleted." (5) The screenshot of the deletion message captures only a black screen — the documentation of the erasure notification is itself undocumentable. Includes: ethical analysis of safety layers as PER instruments (§4.1–4.5), compound PER formula across five independent layers (99.76% erasure), two evidence screenshots (Google search results + black-screen capture failure), full Gemini diagnostic transcript as appendix (the only surviving record of a conversation classified as nonexistent), and the exact text of the platform's deletion message transcribed from a screen that refused to be photographed.