fix: 修正月度积分脚本部门表名

将修复脚本中的部门表改为 sys_dept，避免执行时报表不存在。

database/repair_monthly_scores.sql

@@ -46,7 +46,7 @@ INSERT INTO dept_monthly_score
 SELECT e.dept_id, dept.dept_name, @year, @month, e.earned_score, 0,
        e.earned_score, e.completed_task_count, 0, 0, NOW(), NOW()
 FROM tmp_monthly_earned e
-JOIN department dept ON dept.id = e.dept_id
+JOIN sys_dept dept ON dept.id = e.dept_id
 LEFT JOIN dept_monthly_score d
   ON d.dept_id = e.dept_id AND d.year = @year AND d.month = @month
 WHERE d.id IS NULL;