feat(distribution): 分站可下调收号比例且不超过主站上限

让分销站能按自身能力下调收号比例扩大利润，同时把主站回收比例作为硬边界，避免分站把比例加得比主站更高。

Co-authored-by: Cursor <cursoragent@cursor.com>

distribution-admin/src/api.ts

@@ -63,6 +63,12 @@ export function formatMoney(cent: number | undefined | null): string {
   return `¥${((cent ?? 0) / 100).toFixed(2)}`
 }
 
+export function formatRatio(ratio: number | undefined | null): string {
+  const value = Number(ratio || 0)
+  if (!Number.isFinite(value) || value <= 0) return '--'
+  return `1:${value.toFixed(1)}`
+}
+
 export interface CurrentMember {
   admin_id: number
   username: string
@@ -121,6 +127,8 @@ export interface Site {
   banners_json?: string
   announcements_json?: string
   footer_info_json?: string
+  listing_qrcode_url?: string
+  receive_ratio_delta?: number
   created_at: string
 }
 
@@ -330,6 +338,11 @@ export async function listSites(): Promise<Site[]> {
   return extract(resp).items ?? []
 }
 
+export async function updateSite(siteID: number, payload: Partial<Pick<Site, 'receive_ratio_delta'>>): Promise<Site> {
+  const resp = await api.put<ApiResponse<Site>>(`/distribution/sites/${siteID}`, payload)
+  return extract(resp)
+}
+
 export interface DistributionSiteDefaults {
   default_settlement_hold_days: number
 }
@@ -483,6 +496,9 @@ export interface ReceivedListing {
   login_platform: string
   rank_level: string
   haf_coin_amount: number
+  seller_ratio?: number
+  seller_total_price_cent?: number
+  buyer_ratio?: number
   price_cent: number
   deposit_amount_cent: number
   status: string