feat(statistics): 恢复榴莲树认种数量趋势图表

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

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

backend/services/wallet-service/prisma/schema.prisma

@@ -367,6 +367,58 @@ model ProcessedEvent {
   @@index([processedAt])
 }
 
+// ============================================
+// 系统账户转出订单表
+// 用于记录从系统账户(S开头/区域账户)转出到用户账户的订单
+// ============================================
+model SystemWithdrawalOrder {
+  id              BigInt   @id @default(autoincrement()) @map("order_id")
+  orderNo         String   @unique @map("order_no") @db.VarChar(50)
+
+  // 转出方(系统账户)
+  fromAccountSequence String  @map("from_account_sequence") @db.VarChar(20)  // 系统账户序列号
+  fromAccountName     String  @map("from_account_name") @db.VarChar(100)     // 系统账户名称
+
+  // 接收方(用户账户)
+  toAccountSequence String  @map("to_account_sequence") @db.VarChar(20)      // 用户充值ID
+  toUserId          BigInt  @map("to_user_id")                               // 用户ID
+  toUserName        String? @map("to_user_name") @db.VarChar(100)            // 用户姓名
+  toAddress         String  @map("to_address") @db.VarChar(100)              // 用户区块链地址
+
+  // 金额
+  amount    Decimal @map("amount") @db.Decimal(20, 8)
+  chainType String  @default("KAVA") @map("chain_type") @db.VarChar(20)
+
+  // 交易信息
+  txHash    String? @map("tx_hash") @db.VarChar(100)
+
+  // 状态: PENDING -> FROZEN -> BROADCASTED -> CONFIRMED / FAILED
+  status       String  @default("PENDING") @map("status") @db.VarChar(20)
+  errorMessage String? @map("error_message") @db.VarChar(500)
+
+  // 操作者
+  operatorId   String  @map("operator_id") @db.VarChar(100)
+  operatorName String? @map("operator_name") @db.VarChar(100)
+
+  // 备注
+  memo String? @map("memo") @db.Text
+
+  // 时间戳
+  frozenAt      DateTime? @map("frozen_at")
+  broadcastedAt DateTime? @map("broadcasted_at")
+  confirmedAt   DateTime? @map("confirmed_at")
+  createdAt     DateTime  @default(now()) @map("created_at")
+
+  @@map("system_withdrawal_orders")
+  @@index([fromAccountSequence])
+  @@index([toAccountSequence])
+  @@index([toUserId])
+  @@index([status])
+  @@index([txHash])
+  @@index([operatorId])
+  @@index([createdAt])
+}
+
 // ============================================
 // 线下结算扣减记录表
 // 记录哪些 REWARD_SETTLED 流水已被"线下结算"扣减过

backend/services/wallet-service/src/domain/value-objects/ledger-entry-type.enum.ts

@@ -19,4 +19,6 @@ export enum LedgerEntryType {
   UNFREEZE = 'UNFREEZE',
   SYSTEM_ALLOCATION = 'SYSTEM_ALLOCATION',  // 系统账户分配
   FEE_COLLECTION = 'FEE_COLLECTION',        // 手续费归集
+  SYSTEM_TRANSFER_OUT = 'SYSTEM_TRANSFER_OUT',  // 系统账户转出（从系统账户转到用户）
+  SYSTEM_TRANSFER_IN = 'SYSTEM_TRANSFER_IN',    // 系统账户转入（用户收到系统账户的转账）
 }

frontend/admin-web/src/app/(dashboard)/statistics/page.tsx

@@ -39,6 +39,8 @@ function formatAmount(amount: string): string {
 export default function StatisticsPage() {
   // [2026-01-04] 新增：主Tab切换 - 数据统计 vs 系统账户
   const [mainTab, setMainTab] = useState<'statistics' | 'system-accounts'>('statistics');
+  // 趋势图时间维度
+  const [trendPeriod, setTrendPeriod] = useState<'day' | 'week' | 'month' | 'quarter' | 'year'>('day');
 
   // [2026-01-06] 新增：认种统计数据状态
   const [plantingStats, setPlantingStats] = useState<PlantingGlobalStats | null>(null);
@@ -149,6 +151,25 @@ export default function StatisticsPage() {
                 )}
               </div>
             </section>
+
+            {/* 榴莲树认种数量趋势 */}
+            <section className={styles.statistics__card}>
+              <div className={styles.statistics__cardHeader}>
+                <b className={styles.statistics__cardTitle}>榴莲树认种数量趋势</b>
+                <div className={styles.statistics__periodTabs}>
+                  {(['day', 'week', 'month', 'quarter', 'year'] as const).map((period) => (
+                    <button
+                      key={period}
+                      className={cn(styles.statistics__periodTab, trendPeriod === period && styles['statistics__periodTab--active'])}
+                      onClick={() => setTrendPeriod(period)}
+                    >
+                      {period === 'day' ? '日' : period === 'week' ? '周' : period === 'month' ? '月' : period === 'quarter' ? '季度' : '年度'}
+                    </button>
+                  ))}
+                </div>
+              </div>
+              <div className={styles.statistics__chartArea}>Chart Placeholder</div>
+            </section>
           </>
         )}
       </div>