feat: add authentication token handling for design persistence

server/api/designs.post.ts

@@ -27,6 +27,9 @@ export default defineEventHandler(async (event) => {
     });
   }
 
+  // Extract the authorization token from the incoming request
+  const authHeader = getHeader(event, "authorization");
+
   const payload = {
     designId: body.designId,
     templateId: body.templateId,
@@ -43,6 +46,7 @@ export default defineEventHandler(async (event) => {
     const result = await $fetch("/designs", {
       baseURL: backendUrl,
       method: "POST",
+      headers: authHeader ? { Authorization: authHeader } : {},
       body: payload,
     });