Introduced the ReceiverAuthState class to encapsulate and manage the authentication state for receivers within an envelope. This class tracks the current authentication response and envelope key, provides methods to update or clear the state, and exposes a Changed event to notify UI components of state transitions, enabling reactive UI updates during the authentication flow.
Introduces a LocalizationService that loads all localized strings from the API and exposes them via an indexer, emulating IStringLocalizer behavior. The service supports language switching, formatting, and notifies consumers on language changes. Supported languages are provided as a static list for UI use. Designed for scoped DI in Blazor components.
