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+-- 修复平台默认/学校默认任务分配的 module 存了中文任务名的问题。
+--
+-- 现象:task_allocation 里 class_id='999999999'(平台默认)与 class_id LIKE 'SCHOOL_DEFAULT:%'
+-- (学校默认,由 initializeSchoolDefault 从平台默认复制而来)的 module 存的是中文任务展示名
+-- (如"行业需求分析-蛋糕指数"),而所有消费方(任务评阅 taskReview、学生端实训任务解析等)
+-- 都用 module 匹配 training_task.task_key(英文标识),一条都匹配不上。
+-- 表现为:没有班级级任务分配的教学班,任务评阅页实训项目/实训任务下拉为空、学生列表为 0,
+-- 学生端实训列表为空;有班级级分配的教学班(班级管理/实训任务管理保存过)不受影响。
+--
+-- 执行前先备份:
+--   CREATE TABLE task_allocation_bak_20261016 AS
+--   SELECT * FROM task_allocation
+--   WHERE class_id='999999999' OR class_id LIKE 'SCHOOL_DEFAULT:%';
+--
+-- 判定是否需要执行:
+--   SELECT a.module FROM task_allocation a
+--   LEFT JOIN training_task t ON t.task_key = a.module
+--   WHERE (a.class_id='999999999' OR a.class_id LIKE 'SCHOOL_DEFAULT:%') AND t.id IS NULL;
+-- 查出中文任务名即需要修复。
+
+-- 1) 平台默认:以 training_task 为基线重建(24 个启用任务;综合实训默认停用,由各班发布后参与)
+DELETE FROM task_allocation WHERE class_id = '999999999';
+INSERT INTO task_allocation (id, class_id, school_id, module, disabled_status, sort)
+SELECT UUID(), '999999999', '999999999', task_key,
+       CASE WHEN task_key = 'comprehensive-case-training' THEN 1 ELSE 0 END,
+       sort
+FROM training_task
+WHERE enabled = 1;
+
+-- 2) 学校默认:逐个学校执行(把 <SCHOOL_ID> 替换为实际学校ID后运行;
+--    已确认无问题的学校跳过。学校清单:
+--    SELECT DISTINCT school_id FROM school_class WHERE class_type='TEACHING';)
+-- DELETE FROM task_allocation WHERE class_id = CONCAT('SCHOOL_DEFAULT:', '<SCHOOL_ID>');
+-- INSERT INTO task_allocation (id, class_id, school_id, module, disabled_status, sort)
+-- SELECT UUID(), CONCAT('SCHOOL_DEFAULT:', '<SCHOOL_ID>'), '<SCHOOL_ID>', task_key,
+--        CASE WHEN task_key = 'comprehensive-case-training' THEN 1 ELSE 0 END,
+--        sort
+-- FROM training_task
+-- WHERE enabled = 1;