- Add /balance/top-up route for payment method selection
- Add /balance/top-up/:methodId route for amount entry and payment
- Remove TopUpModal component (619 lines)
- Simplify InsufficientBalancePrompt to use navigate instead of modals
- Support ?amount and ?returnTo query params for cross-page data flow
- Fix nav isActive to highlight Balance on sub-routes
- Remove unused MainButton platform abstraction
- Increase toast accent opacity for better visibility
- Toast: use solid bg-dark-800 background instead of transparent gradient
- Toast: increase border opacity for better visibility
- Tariffs: allow deletion even with active subscriptions (shows warning)
- Add confirmDeleteWithSubscriptions translation to all locales