@tanstack/ai-persistence

Implement the MessageStore, RunStore, InterruptStore, MetadataStore contracts for @tanstack/ai-persistence against any database. defineAIPersistence, composePersistence overrides, critical invariants (full-replace saveThread, optional loadThread limit/before hint, insert-if-absent createOrResume and interrupt create), authorize thread access, runPersistenceConformance testkit. Use whenever you need server persistence — the package ships contracts, not a backend for your database.