Backend:
- Add ProviderStatus* constants (pending/paid/success/failed/refunded)
- Add DefaultLoadBalanceStrategy, ConfigKeyPublishableKey constants
- GetBasePaymentType: use Type* constants instead of raw strings
- Webhook handler: use payment.Type* for provider keys, extract
webhookLogTruncateLen constant
- All 4 providers: replace status string literals with ProviderStatus*
Frontend:
- All catch blocks: add `: unknown` type annotation
- stores/payment.ts: replace `any` with proper type for plan parsing
- PaymentProviderDialog: replace `as any` with `as SelectOption[]`
erio
c016bdba13