Stop treating login/save-progress as a 48-character email limit.

The overlay was failing Zod on preset method-card support text attached with the draft; raise that cap, allow RFC-length emails, and drop Back to home from the overlay.

Co-authored-by: Cursor <cursoragent@cursor.com>

app/contexts/AuthModalContext.tsx

@@ -8,10 +8,8 @@ import {
   useState,
   type ReactNode,
 } from "react";
-import Link from "next/link";
 import Login from "../components/modals/Login";
 import LoginForm from "../components/modals/Login/LoginForm";
-import { useTranslation } from "./MessagesContext";
 
 export type AuthModalLoginVariant = "default" | "saveProgress";
 
@@ -34,7 +32,6 @@ const AuthModalContext = createContext<AuthModalContextValue | null>(null);
 export function AuthModalProvider({ children }: { children: ReactNode }) {
   const [open, setOpen] = useState(false);
   const [opts, setOpts] = useState<OpenLoginOptions>({});
-  const t = useTranslation("pages.login");
 
   const openLogin = useCallback((o?: OpenLoginOptions) => {
     setOpts(o ?? {});
@@ -62,15 +59,6 @@ export function AuthModalProvider({ children }: { children: ReactNode }) {
         backdropVariant={backdropVariant}
         usePortal
         ariaLabelledBy="login-modal-heading"
-        belowCard={
-          <Link
-            href="/"
-            className="text-small-paragraph text-[var(--color-content-invert-tertiary,#2d2d2d)] text-center hover:opacity-90"
-            onClick={() => closeLogin()}
-          >
-            {t("backToHome")}
-          </Link>
-        }
       >
         <LoginForm
           variant={opts.variant ?? "default"}