Unify staff recruitment work table collation

sql/migration/2026-04-22-fix-staff-recruitment-work-collation.sql

@@ -0,0 +1,7 @@
+-- 修复员工招聘历史工作经历表排序规则漂移
+-- 目标：
+-- 1. 将 ccdi_staff_recruitment_work 统一为 utf8mb4 / utf8mb4_general_ci。
+-- 2. 消除与 ccdi_staff_recruitment 在 recruit_id 关联时的排序规则冲突。
+
+ALTER TABLE `ccdi_staff_recruitment_work`
+    CONVERT TO CHARACTER SET utf8mb4 COLLATE utf8mb4_general_ci;