feat(M08-B): 补保洁员绩效排行

backend/src/cleaning/cleaning-task-repository.ts

@@ -146,6 +146,8 @@ interface ManagerMemberStatsRow extends RowDataPacket {
   cleanerUserId: string;
   cleanerName: string;
   taskCount: number;
+  completedTaskCount: number;
+  rejectedTaskCount: number;
   pendingSettlementCents: number | null;
   settledRewardCents: number | null;
 }
@@ -920,6 +922,8 @@ export class CleaningTaskRepository {
     const [memberRows] = await this.pool.execute<ManagerMemberStatsRow[]>(
       `SELECT m.user_id AS cleanerUserId, u.nickname AS cleanerName,
               COUNT(DISTINCT m.task_id) AS taskCount,
+              SUM(CASE WHEN t.status IN ('COMPLETED', 'SETTLED') THEN 1 ELSE 0 END) AS completedTaskCount,
+              SUM(CASE WHEN t.status = 'REJECTED' THEN 1 ELSE 0 END) AS rejectedTaskCount,
               COALESCE(SUM(CASE
                 WHEN m.removed_at IS NULL AND m.settled_at IS NULL AND t.status IN ('SUBMITTED', 'COMPLETED')
                 THEN m.reward_cents ELSE 0 END), 0) AS pendingSettlementCents,
@@ -1450,6 +1454,8 @@ function publicManagerStatistics(
       cleanerUserId: String(row.cleanerUserId),
       cleanerName: row.cleanerName,
       taskCount: Number(row.taskCount),
+      completedTaskCount: Number(row.completedTaskCount ?? 0),
+      rejectedTaskCount: Number(row.rejectedTaskCount ?? 0),
       pendingSettlementCents: Number(row.pendingSettlementCents ?? 0),
       settledRewardCents: Number(row.settledRewardCents ?? 0)
     })),