Wire admin payment_order_prefix into order number generation (with 32-char
cap for gateways), make 查看 open a full order-detail modal with
status-aware footer actions, keep type badge top-left only, and right-align
unpaid list actions with countdown on the left.
Refresh orders.css for embedded user-center layout: segmented status
tabs, stat tiles, card hierarchy, action pills, after-sale list, and
dark mode; light HTML polish for title and empty state.
Register UC panel tab=orders with full order list/actions UI; route
aksrt_get_orders_page_url and /orders template to profile?tab=orders;
enqueue order assets when the UC orders tab is active.
kate522