- Increase account privacy in logs

- Improve book download retry

InternalUtilities/Account.cs

@@ -93,5 +93,11 @@ namespace InternalUtilities
 		}
 
 		public override string ToString() => $"{AccountId} - {Locale?.Name ?? "[empty]"}";
+
+		public string MaskedLogEntry => @$"AccountId={mask(AccountId)}|AccountName={mask(AccountName)}|Locale={Locale?.Name ?? "[empty]"}";
+		private static string mask(string str)
+			=> str is null ? "[null]"
+			: str == string.Empty ? "[empty]"
+			: str.ToMask();
 	}
 }

InternalUtilities/UNTESTED/AudibleApiActions.cs

@@ -32,7 +32,7 @@ namespace InternalUtilities
 		{
 			Serilog.Log.Logger.Information("GetApiAsync. {@DebugInfo}", new
 			{
-				AccountId = account?.AccountId.ToMask() ?? "[empty]",
+				Account = account?.MaskedLogEntry ?? "[null]",
 				LocaleName = account?.Locale?.Name
 			});
 			return EzApiCreator.GetApiAsync(