fix(reporting-service): 修复面对面结算数据解包问题

wallet-service 返回 { success, data, timestamp } 包装格式，
getOfflineSettlementSummary 需要用 response.data.data 解包才能获取真正的数据。

🤖 Generated with [Claude Code](https://claude.com/claude-code)

Co-Authored-By: Claude Opus 4.5 <noreply@anthropic.com>

backend/services/reporting-service/src/infrastructure/external/wallet-service/wallet-service.client.ts

@@ -94,6 +94,43 @@ export interface AllSystemAccountsLedgerResponse {
   }>;
 }
 
+// [2026-01-06] 新增：手续费归集账户汇总响应类型
+export interface FeeCollectionSummaryResponse {
+  accountSequence: string;
+  accountBalance: number;
+  totalAmount: number;
+  totalCount: number;
+  breakdown: Array<{
+    feeType: string;
+    amount: number;
+    count: number;
+  }>;
+  byMonth: Array<{
+    month: string;
+    amount: number;
+    count: number;
+  }>;
+}
+
+// [2026-01-06] 新增：手续费归集流水条目
+export interface FeeCollectionEntryDTO {
+  id: string;
+  feeType: string;
+  amount: number;
+  refOrderId: string | null;
+  memo: string | null;
+  createdAt: string;
+}
+
+// [2026-01-06] 新增：手续费归集流水列表响应
+export interface FeeCollectionEntriesResponse {
+  entries: FeeCollectionEntryDTO[];
+  total: number;
+  page: number;
+  pageSize: number;
+  totalPages: number;
+}
+
 @Injectable()
 export class WalletServiceClient {
   private readonly logger = new Logger(WalletServiceClient.name);
@@ -111,6 +148,7 @@ export class WalletServiceClient {
 
   /**
    * 获取面对面结算统计汇总
+   * [2026-01-06] 修复：wallet-service 返回 { success, data, timestamp } 包装格式，需要解包
    */
   async getOfflineSettlementSummary(params?: {
     startDate?: string;
@@ -125,10 +163,11 @@ export class WalletServiceClient {
       this.logger.debug(`[getOfflineSettlementSummary] 请求: ${url}`);
 
       const response = await firstValueFrom(
-        this.httpService.get<OfflineSettlementSummary>(url),
+        this.httpService.get<{ success: boolean; data: OfflineSettlementSummary; timestamp: string }>(url),
       );
 
-      return response.data;
+      // wallet-service 返回 { success, data, timestamp } 包装格式
+      return response.data.data;
     } catch (error) {
       this.logger.error(`[getOfflineSettlementSummary] 失败: ${error.message}`);
       // 返回默认值，不阻塞报表
@@ -220,4 +259,70 @@ export class WalletServiceClient {
       };
     }
   }
+
+  // [2026-01-06] 新增：获取手续费归集账户汇总统计
+  /**
+   * 获取手续费归集账户汇总统计
+   * 统计 S0000000006 账户收到的所有提现手续费
+   */
+  async getFeeCollectionSummary(): Promise<FeeCollectionSummaryResponse> {
+    try {
+      const url = `${this.baseUrl}/api/v1/wallets/statistics/fee-collection-summary`;
+      this.logger.debug(`[getFeeCollectionSummary] 请求: ${url}`);
+
+      const response = await firstValueFrom(
+        this.httpService.get<FeeCollectionSummaryResponse>(url),
+      );
+
+      return response.data;
+    } catch (error) {
+      this.logger.error(`[getFeeCollectionSummary] 失败: ${error.message}`);
+      return {
+        accountSequence: 'S0000000006',
+        accountBalance: 0,
+        totalAmount: 0,
+        totalCount: 0,
+        breakdown: [],
+        byMonth: [],
+      };
+    }
+  }
+
+  /**
+   * 获取手续费归集账户流水明细
+   */
+  async getFeeCollectionEntries(params?: {
+    page?: number;
+    pageSize?: number;
+    feeType?: string;
+    startDate?: string;
+    endDate?: string;
+  }): Promise<FeeCollectionEntriesResponse> {
+    try {
+      const queryParams = new URLSearchParams();
+      if (params?.page) queryParams.append('page', params.page.toString());
+      if (params?.pageSize) queryParams.append('pageSize', params.pageSize.toString());
+      if (params?.feeType) queryParams.append('feeType', params.feeType);
+      if (params?.startDate) queryParams.append('startDate', params.startDate);
+      if (params?.endDate) queryParams.append('endDate', params.endDate);
+
+      const url = `${this.baseUrl}/api/v1/wallets/statistics/fee-collection-entries?${queryParams.toString()}`;
+      this.logger.debug(`[getFeeCollectionEntries] 请求: ${url}`);
+
+      const response = await firstValueFrom(
+        this.httpService.get<FeeCollectionEntriesResponse>(url),
+      );
+
+      return response.data;
+    } catch (error) {
+      this.logger.error(`[getFeeCollectionEntries] 失败: ${error.message}`);
+      return {
+        entries: [],
+        total: 0,
+        page: 1,
+        pageSize: params?.pageSize ?? 50,
+        totalPages: 0,
+      };
+    }
+  }
 }