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>

lib/create/isValidCreateFlowSaveEmail.ts

@@ -1,4 +1,5 @@
-const EMAIL_MAX_LEN = 254;
+/** RFC 5321 max mailbox length (no angle brackets). */
+export const EMAIL_MAX_LEN = 254;
 
 /** Pragmatic check for the create-flow “save progress” email field (draft + footer enablement). */
 export function isValidCreateFlowSaveEmail(value: unknown): boolean {