This improves the user experience by automatically filling the email field

and preventing users from changing the email they were invited with.

- Update invite link generation to include email parameter in URL
- Modify signup form to pre-fill and lock email field when provided via invite
- Update invite page and status card to preserve email through redirect chain
- Ensure existing invite URLs continue to work without breaking changes

src/app/auth/signup/page.tsx

@@ -11,7 +11,10 @@ import { getTranslations } from "next-intl/server";
 export const dynamic = "force-dynamic";
 
 export default async function Page(props: {
-    searchParams: Promise<{ redirect: string | undefined }>;
+    searchParams: Promise<{ 
+        redirect: string | undefined;
+        email: string | undefined;
+    }>;
 }) {
     const searchParams = await props.searchParams;
     const getUser = cache(verifySession);
@@ -69,6 +72,7 @@ export default async function Page(props: {
                 redirect={redirectUrl}
                 inviteToken={inviteToken}
                 inviteId={inviteId}
+                emailParam={searchParams.email}
             />
 
             <p className="text-center text-muted-foreground mt-4">