♻️ Add env variable validation

src/pages/api/trpc/[trpc].ts

@@ -1,5 +1,6 @@
 import { createNextApiHandler } from '@trpc/server/adapters/next';
 import Consola from 'consola';
+import { env } from '~/env';
 import { rootRouter } from '~/server/api/root';
 import { createTRPCContext } from '~/server/api/trpc';
 
@@ -8,7 +9,7 @@ export default createNextApiHandler({
   router: rootRouter,
   createContext: createTRPCContext,
   onError:
-    process.env.NODE_ENV === 'development'
+    env.NODE_ENV === 'development'
       ? ({ path, error }) => {
           Consola.error(`❌ tRPC failed on ${path ?? '<no-path>'}: ${error.message}`);
         }