feat: in-platform migration tooling for Vault policies + scaffolding

backend/src/db/migrations/20251013104547_add-in-platform-external-migration.ts

@@ -0,0 +1,28 @@
+import { Knex } from "knex";
+
+import { TableName } from "../schemas";
+import { createOnUpdateTrigger, dropOnUpdateTrigger } from "../utils";
+
+export async function up(knex: Knex): Promise<void> {
+  if (!(await knex.schema.hasTable(TableName.ExternalMigrationConfig))) {
+    await knex.schema.createTable(TableName.ExternalMigrationConfig, (t) => {
+      t.uuid("id", { primaryKey: true }).defaultTo(knex.fn.uuid());
+      t.uuid("orgId").notNullable();
+      t.foreign("orgId").references("id").inTable(TableName.Organization).onDelete("CASCADE");
+      t.string("platform").notNullable();
+
+      t.uuid("connectionId");
+      t.foreign("connectionId").references("id").inTable(TableName.AppConnection);
+
+      t.timestamps(true, true, true);
+      t.unique(["orgId", "platform"]);
+    });
+
+    await createOnUpdateTrigger(knex, TableName.ExternalMigrationConfig);
+  }
+}
+
+export async function down(knex: Knex): Promise<void> {
+  await knex.schema.dropTableIfExists(TableName.ExternalMigrationConfig);
+  await dropOnUpdateTrigger(knex, TableName.ExternalMigrationConfig);
+}