chore: add migration file

backend/src/db/migrations/20250204025010_app-connections-and-secret-syncs-unique-constraint.ts

@@ -0,0 +1,23 @@
+import { Knex } from "knex";
+
+import { TableName } from "@app/db/schemas";
+
+export async function up(knex: Knex): Promise<void> {
+  await knex.schema.alterTable(TableName.AppConnection, (t) => {
+    t.unique(["orgId", "name"]);
+  });
+
+  await knex.schema.alterTable(TableName.SecretSync, (t) => {
+    t.unique(["projectId", "name"]);
+  });
+}
+
+export async function down(knex: Knex): Promise<void> {
+  await knex.schema.alterTable(TableName.AppConnection, (t) => {
+    t.dropUnique(["orgId", "name"]);
+  });
+
+  await knex.schema.alterTable(TableName.SecretSync, (t) => {
+    t.dropUnique(["projectId", "name"]);
+  });
+}