.4062073974432528:9b9cbda9dfad4f01a5d6cc2d29fa1663_69edc37876b23b934f810ba1.69edc4dc76b23b934f810ba5.69edc4db0a1bff46c4e150c6:Trae CN.T(2026/4/26 15:55:08)

[CGW516]

新增商机阶段变更历史记录功能，包括前后端接口实现和前端展示

• 后端添加阶段变更历史记录服务
• 前端在商机详情抽屉中展示阶段变更时间线
• 修改阶段更新逻辑以记录变更历史

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