web-next: rename-character/customize-character por SumUp + renombrado de rutas

- /rename-character y /customize-character: renombrar/personalizar pagados por SumUp
  (getRenamePrice/getCustomizePrice). SumUp ahora es service-aware: columna
  home_stripelog.service; createSumUpCheckout guarda service+character;
  fulfillSumUpCheckout despacha a la acción del servicio (.char rename/customi) o,
  sin service, acredita PD. [service]/checkout acepta provider:'sumup';
  PaidServiceForm acepta provider+confirmText; service-success maneja el return SumUp.
  Se eliminan las antiguas /rename y /customize (Stripe).
- /revive-character (comparte ReviveServiceContent); se elimina /revive.
- Renombres de ruta + todos sus enlaces:
  /account -> /my-account, /recruit -> /recruit-a-friend, /unstuck -> /unstuck-character.
  (/select-account y /api/account/* intactos.)

Co-Authored-By: Claude Opus 4.8 (1M context) <noreply@anthropic.com>

web-next/components/ServiceBox.tsx

@@ -18,10 +18,10 @@ export async function ServiceBox({
     <div className="box-content">
       <div className="title-box-content">
         <h2>{heading ?? t('info')}</h2>
-        <Link className="back-to-account" href="/account">
+        <Link className="back-to-account" href="/my-account">
           {t('back')}
         </Link>
-        <Link className="back-to-account-responsive" href="/account">
+        <Link className="back-to-account-responsive" href="/my-account">
           {t('backShort')}
         </Link>
       </div>