继续收紧 TypeScript：ClaimIdentity 契约与 flow 出口类型

- 新增 types/claim-identity，统一 ClaimIdentity / Payload / AdminSummary
- 导出 KuaishouCloudFlow、KuaishouFeifeiFlow 作为 normalize 出口
- 生产路径 JsonObject 统一从 types/json 导入，去掉 rebind as any
- 前后端 claimIdentity 类型字段对齐

apps/backend/src/services/fulfillment/kuaishou-feifei/index.ts

@@ -207,7 +207,28 @@ export async function syncKuaishouFeifeiTaskStatus(task: TaskRow) {
   return updatedTask || task
 }
 
-export function normalizeKuaishouFeifeiFlow(value: unknown) {
+/** normalizeKuaishouFeifeiFlow 出口类型 */
+export type KuaishouFeifeiFlow = {
+  flowType: 'kuaishou_feifei'
+  productCode: string
+  productName: string
+  platformOrderNo: string
+  orderNo: string
+  rechargeStatus: number
+  rechargeStatusLabel: string
+  rechargeResultMessage: string
+  claimUrl: string
+  consumeStatus: string
+  shortLink: ReturnType<typeof normalizeShortLinkPayload>
+  h5: {
+    entryUrl: string
+    rechargeUrl: string
+  }
+  lastSyncedAt: unknown
+  raw: unknown
+}
+
+export function normalizeKuaishouFeifeiFlow(value: unknown): KuaishouFeifeiFlow {
   const source = value && typeof value === 'object' && !Array.isArray(value)
     ? value as JsonObject
     : {}
@@ -270,7 +291,7 @@ export function resolveKuaishouFeifeiH5UrlWithTaskUid(
 }
 
 function mergeKuaishouFeifeiOrder(
-  flow: ReturnType<typeof normalizeKuaishouFeifeiFlow>,
+  flow: KuaishouFeifeiFlow,
   order: Awaited<ReturnType<typeof createKuaishouFeifeiOrder>>,
   patch: {
     platformOrderNo?: string
@@ -299,7 +320,7 @@ function mergeKuaishouFeifeiOrder(
 }
 
 function resolveKuaishouFeifeiDirectClaimUrl(
-  flow: ReturnType<typeof normalizeKuaishouFeifeiFlow>,
+  flow: KuaishouFeifeiFlow,
 ) {
   const h5ClaimUrl = flow.h5.rechargeUrl || flow.h5.entryUrl
   if (h5ClaimUrl) {