add AuthType col to Sends table, change Emails col length to 4000, and run migrations

util/Migrator/DbScripts/2025-12-18_00_SendAuthType.sql

@@ -0,0 +1,6 @@
+IF COL_LENGTH('[dbo].[Send]', 'AuthType') IS NULL
+BEGIN
+ALTER TABLE [dbo].[Send]
+    ADD [AuthType] TINYINT NULL;
+END
+GO

util/Migrator/DbScripts/2025-12-18_01_SendEmailsLength.sql

@@ -0,0 +1,11 @@
+IF EXISTS (
+    SELECT *
+    FROM INFORMATION_SCHEMA.COLUMNS
+    WHERE COLUMN_NAME = 'Emails' AND
+        DATA_TYPE = 'NVARCHAR (1024)' AND
+        TABLE_NAME = 'Send')
+BEGIN
+    ALTER TABLE [dbo].[Send]
+    ALTER COLUMN [Emails] NVARCHAR (4000) NULL
+END
+GO