fix the errors in dashboard

apps/dashboard/src/app/sign-in/[[...sign-in]]/SignInPageClient.tsx

@@ -117,11 +117,19 @@ export default function SignInPageClient({ embedded = false }: { embedded?: bool
       changed = true
     }
 
+    // useSearchParams() can return empty params during hydration without a Suspense boundary.
+    // Always preserve embedded=1 when the component was server-rendered as embedded so
+    // the router.replace doesn't strip it and trigger an unintended redirect.
+    if (embedded && params.get('embedded') !== '1') {
+      params.set('embedded', '1')
+      changed = true
+    }
+
     if (!changed) return
 
     const nextQuery = params.toString()
     router.replace(nextQuery ? `${pathname}?${nextQuery}` : pathname, { scroll: false })
-  }, [language, pathname, router, searchParams, theme])
+  }, [embedded, language, pathname, router, searchParams, theme])
 
   useEffect(() => {
     const currentPath = window.location.pathname + (window.location.search || '')