Contract Review Workspaces in 2026: 3-Layer Retrieval Recovery Ledger

Recent sources outline retrieval architecture designs for healthcare appointment assistants and legal contract review workspaces, emphasizing tenant isolation to prevent cross‑tenant data leakage. They propose starting with a shared physical index and mandatory tenant predicates, then moving high‑risk partitions to dedicated indexes after evaluation, balancing index cost, authorization scope, and auditability.