fix the booking and contract

apps/dashboard/src/app/sign-up/[[...sign-up]]/SignUpForm.tsx

@@ -6,6 +6,7 @@ import { usePathname, useRouter, useSearchParams } from "next/navigation";
 import { apiFetch } from "@/lib/api";
 import PublicShell from "@/components/layout/PublicShell";
 import { useDashboardI18n } from "@/components/I18nProvider";
+import { buildHomepageSignInPath } from "@/lib/dashboardPaths";
 import { websiteUrl } from "@/lib/urls";
 
 const DASHBOARD_LOGO_SRC = "/dashboard/rentaldrivego.png";
@@ -16,17 +17,17 @@ function notifyParent(message: Record<string, unknown>) {
 }
 
 function withAuthQuery(
-  path: string,
   params: { embedded: boolean; language: "en" | "fr" | "ar"; theme: string },
 ) {
-  const search = new URLSearchParams({
-    lang: params.language,
+  const href = buildHomepageSignInPath(undefined, {
+    locale: params.language,
     theme: params.theme,
   });
+  const url = new URL(href, "http://localhost");
 
-  if (params.embedded) search.set("embedded", "1");
+  if (params.embedded) url.searchParams.set("embedded", "1");
 
-  return `${path}?${search.toString()}`;
+  return `${url.pathname}${url.search}`;
 }
 
 export default function SignUpForm({
@@ -234,7 +235,7 @@ export default function SignUpForm({
     },
   }[preferredLanguage];
 
-  const signInHref = withAuthQuery("/sign-in", {
+  const signInHref = withAuthQuery({
     embedded,
     language: preferredLanguage,
     theme,