Wire SMS registration, forgot password, and one-time login.

Connect business and customer login pages to login-otp and reset-password, and document the auth flows in project context.

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

apps/business/src/components/Header.tsx

@@ -87,7 +87,6 @@ export function Header() {
           <button className={styles.menuBtn} aria-label={t('header.toggleMenu')}>
             <Menu size={22} />
           </button>
-          <h1 className={styles.title}>{t('header.title')}</h1>
         </div>
 
         <div className={styles.right}>