Removed public methods `FetchEmailUidsAsync` and `FetchEmailByUidAsync` from `LimilabsImapEmailService` to simplify the public API.
Refactored `FetchEmailUidsAsync` into a private static helper method that operates directly on an `Imap` instance.
Removed exception handling logic specific to the removed methods. These changes aim to encapsulate email fetching functionality and streamline the service's design.