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/app/[locale]/select-account/SelectAccountForm.tsx

@@ -27,7 +27,7 @@ export function SelectAccountForm({ accounts }: { accounts: GameAccount[] }) {
         body: JSON.stringify({ accountId: id }),
       })
       const data: { success?: boolean } = await res.json()
-      if (data.success) router.push('/account')
+      if (data.success) router.push('/my-account')
       else {
         setError(t('error'))
         setBusy(null)