fix: preserve billing response shape

components/billing-manager.tsx

@@ -20,6 +20,7 @@ import {
   X
 } from "lucide-react";
 import { billingUnitLabel, formatBillingAmount } from "@/lib/billing";
+import { parseAdminBillingPayload, parseMemberBillingPayload } from "@/lib/client/billing-api";
 import { pulseFeedback, revealChildren, runScopedMotion } from "@/lib/ui/motion";
 import type { BillingAccountConfig, BillingParameterDimension, BillingParameterTier, BillingPriceRule, OrganizationWallet } from "@/lib/types";
 
@@ -161,8 +162,9 @@ export function BillingManager({ isSuperAdmin }: { isSuperAdmin: boolean }) {
     try {
       if (isSuperAdmin) {
         const adminResponse = await fetch("/api/admin/billing", { cache: "no-store" });
-        const adminPayload = await readApiPayload<AdminPayload>(adminResponse);
-        if (!adminResponse.ok) throw new Error(adminPayload.error || "读取超管计费数据失败");
+        const rawAdminPayload = await readApiPayload<AdminPayload>(adminResponse);
+        if (!adminResponse.ok) throw new Error(rawAdminPayload.error || "读取超管计费数据失败");
+        const adminPayload = parseAdminBillingPayload(rawAdminPayload);
         setAdmin(adminPayload);
         setBilling(buildAdminBillingPayload(adminPayload));
         setAccountDraft({ ...emptyAccountDraft, ...adminPayload.billingAccount });
@@ -172,8 +174,9 @@ export function BillingManager({ isSuperAdmin }: { isSuperAdmin: boolean }) {
         }));
       } else {
         const billingResponse = await fetch("/api/billing", { cache: "no-store" });
-        const billingPayload = await readApiPayload<BillingPayload>(billingResponse);
-        if (!billingResponse.ok) throw new Error(billingPayload.error || "读取计费数据失败");
+        const rawBillingPayload = await readApiPayload<BillingPayload>(billingResponse);
+        if (!billingResponse.ok) throw new Error(rawBillingPayload.error || "读取计费数据失败");
+        const billingPayload = parseMemberBillingPayload(rawBillingPayload);
         setBilling(billingPayload);
       }
     } catch (nextError) {
@@ -324,7 +327,7 @@ async function readApiPayload<T extends Record<string, unknown>>(response: Respo
   } catch {
     return {
       error: response.status >= 500
-        ? "计费服务返回了服务器错误，请检查服务端日志，并确认已执行 npm run db:migrate。"
+        ? "计费服务返回了服务器错误，请检查 Go API 状态和服务端日志。"
         : `服务器返回了无效响应（HTTP ${response.status}）。`
     } as T & { error?: string };
   }