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- 升级 ruff 至 v0.15.9 和 mypy 至 v1.20.0 以获取最新功能与修复 - 将两个文件中的多行条件表达式用括号包裹，以符合 PEP 8 并提高可读性
- 优化模块现在接受 Dict[str, DataFrame] 格式的多品种数据 - 为 run_grid_search 和 run_walk_forward 添加数据符号推断与校验 - 重构 walk-forward 切窗逻辑以使用统一时间轴，支持多品种时间对齐 - 改进 ML 验证配置的滚动训练触发逻辑，支持相对步长和测试窗口回退 - 确保训练信号在对应 bar 的 on_bar 回调后执行 - 添加相关单元测试验证多品种数据支持和训练调度行为
- 扩展网格搜索和WFO回测以支持多品种数据映射 - 为机器学习策略添加测试窗口配置选项 - 修复WFO回测中预热期过滤和DataFrame时间戳切片逻辑 - 添加相关单元测试验证多品种回测功能
- 为 QuantModel 添加 clone() 方法，支持为每个训练窗口创建独立副本 - 在策略事件处理中集成模型激活机制，新模型在下一根 bar 生效 - 新增 is_model_ready() 和 current_validation_window() 接口，供用户查询模型状态 - 更新示例代码和文档，说明兼容模式下的模型生命周期 - 修复测试用例以支持新的生命周期管理逻辑
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