Corregge l'accesso all'env Worker per Astro 6.

Sostituisce locals.runtime.env con import da cloudflare:workers, ripristinando contatti e newsletter.

Co-authored-by: Cursor <cursoragent@cursor.com>

src/lib/newsletter.ts

@@ -1,6 +1,7 @@
 /**
  * Shared helpers for newsletter API routes (Cloudflare Worker / Astro).
  */
+import { env as workerEnv } from 'cloudflare:workers';
 
 export type RuntimeEnv = Record<string, unknown>;
 
@@ -19,20 +20,9 @@ export type NewsletterSubscriber = {
   unsubscribed_at: string | null;
 };
 
-export function getRuntimeEnv(locals: unknown): RuntimeEnv {
-  if (
-    locals &&
-    typeof locals === 'object' &&
-    'runtime' in locals &&
-    locals.runtime &&
-    typeof locals.runtime === 'object' &&
-    'env' in locals.runtime &&
-    locals.runtime.env &&
-    typeof locals.runtime.env === 'object'
-  ) {
-    return locals.runtime.env as RuntimeEnv;
-  }
-  return {};
+/** Astro v6+: use `cloudflare:workers` env (locals.runtime.env was removed). */
+export function getRuntimeEnv(_locals?: unknown): RuntimeEnv {
+  return workerEnv as unknown as RuntimeEnv;
 }
 
 export function readEnv(name: string, runtimeEnv: RuntimeEnv): string {