Finish preliminary email validation, merge user flow w saml/ldap

backend/src/db/migrations/20240426162819_user-alias-optional-username.ts

@@ -0,0 +1,11 @@
+import { Knex } from "knex";
+
+import { TableName } from "../schemas";
+
+export async function up(knex: Knex): Promise<void> {
+  await knex.schema.alterTable(TableName.UserAliases, (t) => {
+    t.string("username").nullable().alter();
+  });
+}
+
+export async function down(): Promise<void> {}

backend/src/db/schemas/user-aliases.ts

@@ -10,7 +10,7 @@ import { TImmutableDBKeys } from "./models";
 export const UserAliasesSchema = z.object({
   id: z.string().uuid(),
   userId: z.string().uuid(),
-  username: z.string(),
+  username: z.string().nullable().optional(),
   aliasType: z.string(),
   externalId: z.string(),
   emails: z.string().array().nullable().optional(),