docs(site): 0.19 changelog (#842)

Author: quanru

apps/site/docs/en/changelog.mdx

@@ -2,6 +2,26 @@
 
 > For the complete changelog, please refer to: [Midscene Releases](https://github.com/web-infra-dev/midscene/releases)
 
+## v0.19.0 - Support for Getting Complete Execution Process Data
+
+### New API for Getting Midscene Execution Process Data
+
+Add the `_unstableLogContent` API to the agent. Get the execution process data of Midscene, including the time of each step, the AI tokens consumed, and the screenshot.
+
+The report is generated based on this data, which means you can customize your own report using this data.
+
+Read more: [API documentation](./API.mdx#agent_unstablelogcontent)
+
+### CLI Support for Adjusting Midscene Env Variable Priority
+
+By default, `dotenv` does not override the global environment variables in the `.env` file. If you want to override, you can use the `--dotenv-override` option.
+
+Read more: [Use YAML-based Automation Scripts](./automate-with-scripts-in-yaml.mdx#use-env-file-to-override-global-environment-variables)
+
+### Reduce Report File Size
+
+Reduce the size of the generated report by trimming redundant data, significantly reducing the report file size for complex pages. The typical report file size for complex pages has been reduced from 47.6M to 15.6M!
+
 ## v0.18.0 - enhanced reporting features
 
 🚀 Midscene has another update! It makes your testing and automation processes even more powerful:

apps/site/docs/zh/changelog.mdx

@@ -2,6 +2,26 @@
 
 > 完整更新日志请参考：[Midscene Releases](https://github.com/web-infra-dev/midscene/releases)
 
+## v0.19 - 支持获取完整的执行过程数据
+
+### 新增 API 获取 Midscene 执行过程数据
+
+为 agent 添加 `_unstableLogContent` API，即可获取 Midscene 执行过程数据，比如每个步骤的耗时、AI Tokens 消耗情况、页面截图等！
+
+对了，Midscene 的报告就是根据这份数据生成了，也就是说，使用这份数据，你甚至可以定制一个属于你自己的报告！
+
+详情请参考：[API 文档](./API.mdx#agent_unstablelogcontent)
+
+### CLI 新增参数支持调整 Midscene 环境变量优先级
+
+默认情况下，`dotenv` 不会覆盖 `.env` 文件中同名的全局环境变量。如果希望覆盖，你可以使用 `--dotenv-override` 选项。
+
+详情请参考：[使用 YAML 格式的自动化脚本](./automate-with-scripts-in-yaml.mdx#%E4%BD%BF%E7%94%A8-env-%E4%B8%AD%E7%9A%84%E7%8E%AF%E5%A2%83%E5%8F%98%E9%87%8F%E8%A6%86%E7%9B%96%E5%90%8C%E5%90%8D%E7%9A%84%E5%85%A8%E5%B1%80%E7%8E%AF%E5%A2%83%E5%8F%98%E9%87%8F)
+
+### 大幅减少报告文件大小
+
+裁剪生成的报告中冗余的数据，大幅减少复杂页面的报告文件大小，用户的典型复杂页面报告大小从 47.6M 减小到 15.6M！
+
 ## v0.18 - 回放报告功能增强
 
 🚀 Midscene 又有更新啦！为你带来高质量的 UI 自动化体验。