revert: use @Noerrors + @ts-expect-error for strict layout twoslash

declare module triggers V8 segfaults in Twoslash's sandboxed compiler.
Revert to the stable approach: @Noerrors suppresses the unresolvable
path alias error, and @ts-expect-error annotates the intentional
type error with a descriptive comment.

Author: yamcodes

apps/www/content/docs/nextjs/layouts/strict.mdx

@@ -278,20 +278,30 @@ Import `env` from the client file (`env/client.ts`). The boundary protection wor
 1. **TypeScript Type Safety**: If you import `env` from the client file and try to access a server-side variable (like `DATABASE_URL`), you will get a TypeScript compilation error because it is not defined in the client-safe schema:
 
 ```ts title="src/app/client-component.ts" twoslash
-// @errors: 2339
-// @filename: nextjs-env.d.ts
-declare module "@/env/client" {
-	export const env: {
-		NEXT_PUBLIC_API_URL: string;
-		NODE_ENV: "development" | "production" | "test";
-	};
-}
+// @noErrors
+// @filename: /env/internal/shared.ts
+import { type } from "@arkenv/nextjs/shared";
+/**
+ * @internal 🛑 INTERNAL SCHEMA ONLY.
+ * Do not import this directly. Import `env` from `./client` or `./server` instead.
+ */
+export const SharedSchema = type({ NODE_ENV: "'development' | 'production' | 'test'" });
+
+// @filename: /env/client.ts
+import arkenv from "@arkenv/nextjs/client";
+import { SharedSchema } from "./internal/shared";
+export const env = arkenv(
+	{ NEXT_PUBLIC_API_URL: "string" },
+	{ extends: [SharedSchema], runtimeEnv: { NEXT_PUBLIC_API_URL: "https://api.example.com", NODE_ENV: "development" } }
+);
+
 // @filename: /client-component.ts
 // ---cut---
 import { env } from "@/env/client";
 
 export function ClientComponent() {
 	const api = env.NEXT_PUBLIC_API_URL;
+	// @ts-expect-error DATABASE_URL is not defined in client env
 	const db = env.DATABASE_URL;
 
 	return `API URL: ${api}`;

apps/www/content/docs/nuxt/layouts/strict.mdx

@@ -236,19 +236,25 @@ Import `env` from the client file (`env/client.ts`). The boundary protection wor
 1. **TypeScript type safety**: If you import `env` from the client file and try to access a server-side variable (like `DATABASE_URL`), you will get a TypeScript compilation error because it is not defined in the client-safe schema:
 
 ```ts title="pages/index.ts" twoslash
-// @errors: 2339
-// @filename: nuxt-env.d.ts
-declare module "~~/env/client" {
-	export const env: {
-		NUXT_PUBLIC_API_URL: string;
-		NODE_ENV: "development" | "production" | "test";
-	};
-}
+// @noErrors
+// @filename: env/internal/shared.ts
+import { type } from "@arkenv/nuxt/shared";
+export const SharedSchema = type({
+	NODE_ENV: "'development' | 'production' | 'test' = 'development'",
+});
+// @filename: env/client.ts
+import arkenv from "@arkenv/nuxt/client";
+import { SharedSchema } from "./internal/shared";
+export const env = arkenv(
+	{ NUXT_PUBLIC_API_URL: "string = 'https://api.example.com'" },
+	{ extends: [SharedSchema] },
+);
 // @filename: pages/index.ts
 // ---cut---
 import { env } from "~~/env/client";
 
 const api = env.NUXT_PUBLIC_API_URL;
+// @ts-expect-error DATABASE_URL is not defined in client env
 const db = env.DATABASE_URL;
 ```