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refactor(payment): inline payment flow, mobile support, renewal modal

Replace dialog-based payment with inline state flow (select → paying/stripe).
- PaymentStatusPanel replaces QR dialog for scan-to-pay
- StripePaymentInline replaces Stripe popup
- Subscription confirm as inline card instead of modal
- Payment button color follows payment method
- Renewal modal with URL parameter navigation (?tab=subscription&group=123)
- Mobile auto-redirect for H5 payment
- AmountInput uses global min/max instead of per-method
- Tab auto-hides during payment
- Restore CNY (¥) currency for upstream compatibility