fix(mining-admin): fetch mining records from mining-service

Update getUserMiningRecords to call mining-service API instead of
returning empty records. This enables the admin dashboard to display
actual user mining records.

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

backend/services/mining-admin-service/src/application/services/users.service.ts

@@ -1,4 +1,5 @@
-import { Injectable, NotFoundException } from '@nestjs/common';
+import { Injectable, NotFoundException, Logger } from '@nestjs/common';
+import { ConfigService } from '@nestjs/config';
 import { PrismaService } from '../../infrastructure/persistence/prisma/prisma.service';
 import { Prisma } from '@prisma/client';
 
@@ -20,7 +21,15 @@ export interface GetOrdersQuery {
 
 @Injectable()
 export class UsersService {
-  constructor(private readonly prisma: PrismaService) {}
+  private readonly logger = new Logger(UsersService.name);
+  private readonly miningServiceUrl: string;
+
+  constructor(
+    private readonly prisma: PrismaService,
+    private readonly configService: ConfigService,
+  ) {
+    this.miningServiceUrl = this.configService.get<string>('MINING_SERVICE_URL', 'http://localhost:3021');
+  }
 
   /**
    * 获取用户列表
@@ -423,8 +432,7 @@ export class UsersService {
   }
 
   /**
-   * 获取用户挖矿记录（从同步表获取概要）
-   * 注：详细流水需要调用 mining-service
+   * 获取用户挖矿记录（从 mining-service 获取）
    */
   async getUserMiningRecords(
     accountSequence: string,
@@ -441,33 +449,79 @@ export class UsersService {
     }
 
     const mining = user.miningAccount;
-    if (!mining) {
+    const emptySummary = {
+      accountSequence,
+      totalMined: '0',
+      availableBalance: '0',
+      frozenBalance: '0',
+      totalContribution: '0',
+    };
+
+    // 从 mining-service 获取挖矿记录
+    try {
+      const url = `${this.miningServiceUrl}/api/v2/mining/accounts/${accountSequence}/records?page=${page}&pageSize=${pageSize}`;
+      this.logger.log(`Fetching mining records from ${url}`);
+
+      const response = await fetch(url);
+      if (!response.ok) {
+        this.logger.warn(`Failed to fetch mining records: ${response.status}`);
+        return {
+          summary: mining ? {
+            accountSequence,
+            totalMined: mining.totalMined.toString(),
+            availableBalance: mining.availableBalance.toString(),
+            frozenBalance: mining.frozenBalance.toString(),
+            totalContribution: mining.totalContribution.toString(),
+          } : emptySummary,
+          records: [],
+          pagination: { page, pageSize, total: 0, totalPages: 0 },
+        };
+      }
+
+      const result = await response.json();
+      const recordsData = result.data || result;
+
+      // 格式化记录以匹配前端期望的格式
+      const records = (recordsData.data || []).map((r: any) => ({
+        id: r.id,
+        accountSequence,
+        distributionMinute: r.miningMinute,
+        contributionRatio: r.contributionRatio,
+        shareAmount: r.minedAmount,
+        priceSnapshot: r.secondDistribution,
+        createdAt: r.createdAt,
+      }));
+
       return {
-        summary: {
+        summary: mining ? {
           accountSequence,
-          totalMined: '0',
-          availableBalance: '0',
-          frozenBalance: '0',
-          totalContribution: '0',
+          totalMined: mining.totalMined.toString(),
+          availableBalance: mining.availableBalance.toString(),
+          frozenBalance: mining.frozenBalance.toString(),
+          totalContribution: mining.totalContribution.toString(),
+        } : emptySummary,
+        records,
+        pagination: {
+          page,
+          pageSize,
+          total: recordsData.total || 0,
+          totalPages: Math.ceil((recordsData.total || 0) / pageSize),
         },
+      };
+    } catch (error) {
+      this.logger.error('Failed to fetch mining records from mining-service', error);
+      return {
+        summary: mining ? {
+          accountSequence,
+          totalMined: mining.totalMined.toString(),
+          availableBalance: mining.availableBalance.toString(),
+          frozenBalance: mining.frozenBalance.toString(),
+          totalContribution: mining.totalContribution.toString(),
+        } : emptySummary,
         records: [],
         pagination: { page, pageSize, total: 0, totalPages: 0 },
       };
     }
-
-    return {
-      summary: {
-        accountSequence,
-        totalMined: mining.totalMined.toString(),
-        availableBalance: mining.availableBalance.toString(),
-        frozenBalance: mining.frozenBalance.toString(),
-        totalContribution: mining.totalContribution.toString(),
-      },
-      // 详细流水需要从 mining-service 获取
-      records: [],
-      pagination: { page, pageSize, total: 0, totalPages: 0 },
-      note: '详细挖矿记录请查看 mining-service',
-    };
   }
 
   /**