chore: standardize

lib/env.ts

@@ -1,5 +1,9 @@
 import { z } from "zod";
-import { validateMintelEnv, mintelEnvSchema } from "@mintel/next-utils";
+import {
+  validateMintelEnv,
+  mintelEnvSchema,
+  withMintelRefinements,
+} from "@mintel/next-utils";
 
 /**
  * Environment variable schema.
@@ -10,20 +14,25 @@ import { validateMintelEnv, mintelEnvSchema } from "@mintel/next-utils";
  * - Logging
  * - Analytics
  */
-export const envSchema = z.object({
-  ...mintelEnvSchema,
-
+const envExtension = {
   // Project specific overrides or additions
   AUTH_COOKIE_NAME: z.string().default("mb_gatekeeper_session"),
 
   INFRA_DIRECTUS_URL: z.string().url().optional(),
   INFRA_DIRECTUS_TOKEN: z.string().optional(),
-});
+};
+
+/**
+ * Full schema including Mintel base and refinements
+ */
+export const envSchema = withMintelRefinements(
+  z.object(mintelEnvSchema).extend(envExtension),
+);
 
 /**
  * Validated environment object.
  */
-export const env = validateMintelEnv(envSchema.shape);
+export const env = validateMintelEnv(envExtension);
 
 /**
  * For legacy compatibility with existing code.