Add order-delivered to Live Preview support

Matches the backend's new opt-in review/follow-up email type.

Co-Authored-By: Claude Sonnet 5 <noreply@anthropic.com>

app/email-preview/[type]/page.tsx

@@ -18,6 +18,7 @@ const VALID_TYPES: EmailTemplateType[] = [
   "order-returned",
   "order-tracking-added",
   "order-tracking-corrected",
+  "order-delivered",
 ];
 
 const STATUS_TYPE_FALLBACK_HEADING: Record<string, string> = {
@@ -27,6 +28,7 @@ const STATUS_TYPE_FALLBACK_HEADING: Record<string, string> = {
   "order-returned": "Deine Retoure wurde bearbeitet",
   "order-tracking-added": "Hier ist deine Sendungsnummer",
   "order-tracking-corrected": "Korrigierte Sendungsnummer",
+  "order-delivered": "Dein Paket ist angekommen",
 };
 
 // Entered exclusively via EmailTemplates.ts's admin.livePreview.url (a

app/lib/emailTemplates.ts

@@ -315,6 +315,7 @@ export const ORDER_STATUS_EMAIL_ICON: Record<string, string> = {
   "order-returned": "✓",
   "order-tracking-added": "📦",
   "order-tracking-corrected": "📦",
+  "order-delivered": "★",
 };
 
 export function renderOrderStatusHtml(

app/lib/payload.ts

@@ -819,7 +819,8 @@ export type EmailTemplateType =
   | "order-return-requested"
   | "order-returned"
   | "order-tracking-added"
-  | "order-tracking-corrected";
+  | "order-tracking-corrected"
+  | "order-delivered";
 
 type PayloadEmailTemplate = {
   type: EmailTemplateType;