How can Blazor applications reliably back up and restore form validation state?

Blazor applications need to keep form validation state when users leave a page or refresh, so that error messages and field statuses reappear on return. The difficulty is choosing a storage location—client‑side storage such as sessionStorage, a scoped service, or a cascading value—that survives component disposals without leaking memory. Asynchronous validation and dynamically generated fields add complexity to serialization, raising concerns about preserving object references and handling version changes. Developers also wonder whether to centralize backup/restore logic in a dedicated validation service or to scatter it across component lifecycle events.

Which storage approach reliably preserves validation data across disposals while avoiding memory leaks? How can complex validation state be serialized and deserialized without losing referential integrity? Should the backup/restore mechanism be encapsulated in a reusable service or tied to component events?