feat: db table changes for churn email column

src/db/migrations/20250109140803_add_churn_prevention_email_sent.js

@@ -0,0 +1,25 @@
+/* This Source Code Form is subject to the terms of the Mozilla Public
+ * License, v. 2.0. If a copy of the MPL was not distributed with this
+ * file, You can obtain one at http://mozilla.org/MPL/2.0/. */
+
+/**
+ * @param { import("knex").Knex } knex
+ * @returns { Promise<void> }
+ */
+export function up (knex) {
+  return knex.schema.table("subscribers", table => {
+    table.boolean("churn_prevention_email_sent").defaultTo(false);
+    table.index("churn_prevention_email_sent");
+  });
+}
+
+/**
+ * @param { import("knex").Knex } knex
+ * @returns { Promise<void> }
+ */
+export function down (knex) {
+  return knex.schema.table("subscribers", table => {
+    table.dropIndex("churn_prevention_email_sent")
+    table.dropColumn("churn_prevention_email_sent");
+  });
+}

src/knex-tables.d.ts

@@ -152,6 +152,7 @@ declare module "knex/types/tables" {
     sign_in_count: null | number;
     email_addresses: SubscriberEmail[];
     first_broker_removal_email_sent: boolean;
+    churn_prevention_email_sent: boolean;
   }
   type SubscriberOptionalColumns = Extract<
     keyof SubscriberRow,
@@ -174,6 +175,7 @@ declare module "knex/types/tables" {
     | "onerep_profile_id"
     | "email_addresses"
     | "first_broker_removal_email_sent"
+    | "churn_prevention_email_sent"
   >;
   type SubscriberAutoInsertedColumns = Extract<
     keyof SubscriberRow,