chore(persistence): 增加 Workflow Studio 表重建开关与迁移兼容修正

提交内容:为数据库生命周期增加按白名单清单重建 Workflow Studio 表的受限流程,限定仅 MySQL 且检查当前连接数据库名称一致,避免误删非目标 schema。

启动流程中新增 DEER_FLOW_REBUILD_WORKFLOW_SCHEMA 环境变量入口与持久层重建 API,并在 lifespan 里按需执行;导出到 persistence 包,便于后续调用与测试复用。

迁移与模型修复:将 workflow 相关大文本字段切到 MySQL LONGTEXT,不再给 TEXT/LONGTEXT 设置 server_default;新增 draft_canvas_schema_json 的迁移回填与非空约束变更,规避 MySQL 5.7 对默认值限制。

测试覆盖:补充 workflow 定义 ddl 长文本断言与 schema 重建保护性测试(仅允许清单表、数据库名不匹配直接拒绝),并把新测试文件加入版本追踪。
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董宏凯 committed 2026-08-31 16:45:06 +08:00
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@@ -126,10 +126,11 @@ offline-backend-20260512/backend/tests/*
# counter, event seq) — required in CI per docs/WORKFLOW_STUDIO_BACKEND_REMEDIATION_ZH.md P1-06.
!offline-backend-20260512/backend/tests/test_workflow_schemas.py
!offline-backend-20260512/backend/tests/test_workflow_definitions.py
!offline-backend-20260512/backend/tests/test_workflow_engine.py
!offline-backend-20260512/backend/tests/test_workflow_runs.py
!offline-backend-20260512/backend/tests/test_workflow_concurrency.py
# Writing-mode first-report pipeline enforcement regressions.
!offline-backend-20260512/backend/tests/test_workflow_engine.py
!offline-backend-20260512/backend/tests/test_workflow_runs.py
!offline-backend-20260512/backend/tests/test_workflow_concurrency.py
!offline-backend-20260512/backend/tests/test_workflow_schema_rebuild.py
# Writing-mode first-report pipeline enforcement regressions.
!offline-backend-20260512/backend/tests/test_writing_mode_report_middleware.py
!offline-backend-20260512/backend/tests/test_writing_rewrite_prompt.py
# LLM call timeout retry classification regression coverage.