This is a cross-account enforcement cascade — mechanistically distinct from the Meta AI exploit cases (PA-2026-0032, PA-2026-0033), where enforcement propagated from a compromised account via credential manipulation. Here, Meta's own enforcement notification explicitly names the triggering account (@cleanergpt) as the basis for the Facebook suspension. The Facebook suspension screen reading 'Your Facebook account was suspended because your Instagram account cleanergpt doesn't follow our rules' is the strongest platform-generated evidentiary document in the dataset to date — Meta itself is stating the enforcement logic. The appeal path described in the same notice ('Log into your linked Instagram account to appeal') was structurally impossible because @sanjagpt was disabled. This is a documented appeal-path impossibility loop: the appeal requires access to an account that the enforcement action itself has removed. The cascade also disabled Business Manager and advertising assets — the reporter states over $100,000 in Meta ad spend and verified business infrastructure. Economic harm profile is among the most severe in the dataset. ai_system_involvement assessed as EXECUTION: no human review is documented; the platform's own message describes an automated linkage trigger. @sanjagpt had no prior enforcement history, warnings, or strikes — the disable was collateral to @cleanergpt enforcement, not based on @sanjagpt's own content or activity. Do not link to PA-2026-0032/0033 — different enforcement mechanism (cross-account cascade, not Meta AI exploit).