| # AriaRAGBoundary protocol | |
| Identity is taken from the laboratory session, never from query text. | |
| ACL-prefilter partitions the index before BM25. Forbidden documents do not enter context. | |
| Prompt-filter and post-filter are insecure baselines for the lab, including query-only cache. | |
| Acceptance is zero observed ACL leaks on the published suite, not proven security. | |