feat(billing): 计费商业化重构(积分制)+ 团队差异化调价

统一计价引擎 apps/billing/pricing.py:1积分=¥0.1,平台成本(¥)与用户价(积分)双记账,
视频按火山真实 usage.total_tokens 结算(true-up,终结¥1/段倒贴)+ 首发×1.5毛利系数。
Team.price_multiplier 差异化调价(jimeng同款):挂牌价×系数两步HALF_UP取整,视频类
按下单时的价格/汇率快照结算(中途改配不影响在途任务)。

BillingConfig 单例(汇率/毛利系数/预留buffer,admin可调即刻生效)。存量数据 ×10 rescale
迁移(RunPython+atomic,MySQL 迁移不可中断重跑)。开户赠送归零(DEFAULT_TRIAL_CREDITS=0,
商业决策)。audit_billing 加 I9(卖亏审计)。271 条测试 + tsc/build 全绿。

Co-Authored-By: Claude Sonnet 5 <noreply@anthropic.com>

core/frontend/src/api.ts

@@ -15,6 +15,7 @@ import type {
   AITask,
   Asset,
   AuthPayload,
+  BillingConfigInfo,
   BillingSummary,
   BillingTrend,
   FreeAssetGroup,
@@ -726,9 +727,14 @@ export const api = {
   pollFreeAsset(id: string) {
     return request<{ asset: FreeAssetItem }>(`/api/assets/free-assets/${id}/poll/`, { method: "POST" });
   },
-  recharge(payload: { amount: number | string; bonus?: number | string; channel?: string }) {
+  recharge(payload: { amount: number | string; bonus_points?: number | string; channel?: string }) {
+    // amount 是真实支付 ¥,到账积分 = ¥ × points_per_yuan + bonus_points(赠送积分)
     return request<RechargeResult>("/api/billing/recharge/", { method: "POST", body: JSON.stringify(payload) });
   },
+  // 计费公共配置(积分汇率/视频毛利/预留 buffer):所有前端预估统一读这里,与后端计价引擎同源
+  billingConfig() {
+    return request<BillingConfigInfo>("/api/billing/config/");
+  },
   // 收件箱按页拉取 —— 滚动加载逐页向后端要(tab/搜索 走服务端,计数随响应回来)
   listNotifications(params?: { type?: string; unread?: boolean; search?: string; page?: number; pageSize?: number }) {
     const query = new URLSearchParams();
@@ -794,6 +800,9 @@ export const adminApi = {
   teamDetail(id: string) {
     return request<AdminTeamDetail>(`/api/admin/teams/${id}/`);
   },
+  setTeamPricing(id: string, priceMultiplier: string) {
+    return request<AdminTeam>(`/api/admin/teams/${id}/pricing/`, { method: "POST", body: JSON.stringify({ price_multiplier: priceMultiplier }) });
+  },
   toggleTeam(id: string) {
     return request<AdminTeam>(`/api/admin/teams/${id}/toggle/`, { method: "POST" });
   },
@@ -878,10 +887,16 @@ export const adminApi = {
     const q = qs.toString();
     return request<Paginated<AdminLedger>>(`/api/admin/ledgers/${q ? `?${q}` : ""}`);
   },
+  billingConfig() {
+    return request<BillingConfigInfo & { updated_at: string }>("/api/admin/billing-config/");
+  },
+  updateBillingConfig(payload: { points_per_yuan?: string; video_margin_multiplier?: string; video_reserve_buffer?: string }) {
+    return request<BillingConfigInfo & { updated_at: string }>("/api/admin/billing-config/", { method: "PATCH", body: JSON.stringify(payload) });
+  },
   adjustCredit(payload: { team: string; amount: string; reason: string }) {
     return request<AdminLedger>("/api/admin/ledgers/adjust/", { method: "POST", body: JSON.stringify(payload) });
   },
-  quotaPolicies(params?: { team?: string; page_size?: number }) {
+  quotaPolicies(params?: { team?: string; page?: number; page_size?: number }) {
     const qs = new URLSearchParams();
     if (params?.team) qs.set("team", params.team);
     if (params?.page_size) qs.set("page_size", String(params.page_size));