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[![Review Change Stack](https://storage.googleapis.com/coderabbit_public_assets/review-stack-in-coderabbit-ui.svg)](https://app.coderabbit.ai/change-stack/ArcReel/ArcReel/pull/1115?utm_source=github_walkthrough&utm_medium=github&utm_campaign=change_stack)

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No actionable comments were generated in the recent review. 🎉

<details>
<summary>ℹ️ Recent review info</summary>

<details>
<summary>⚙️ Run configuration</summary>

**Configuration used**: Organization UI

**Review profile**: ASSERTIVE

**Plan**: Pro Plus

**Run ID**: `e82c03d5-8695-42b4-864a-6470071ae5f4`

</details>

<details>
<summary>📥 Commits</summary>

Reviewing files that changed from the base of the PR and between 0310cbb50228987e370eb76982dcf5c8d00c625c and f879673332d10feae5817f1c188f1e3fccd6c352.

</details>

<details>
<summary>📒 Files selected for processing (1)</summary>

* `frontend/src/components/pages/settings/AboutSection.tsx`

</details>

</details>

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<details>
<summary>📝 Walkthrough</summary>

## Walkthrough

设置页诊断日志下载改为点击后延迟回收 Blob URL，并新增测试验证回收时序、ObjectURL 创建次数及下载文件名。

### Changes

**诊断日志下载**

|Layer / File(s)|Summary|
|---|---|
|**延迟回收 Blob URL 与下载验证** <br> `frontend/src/components/pages/settings/AboutSection.tsx`, `frontend/src/components/pages/settings/AboutSection.test.tsx`|`URL.revokeObjectURL` 延迟至下一个宏任务执行；测试覆盖非同步回收、ObjectURL 创建次数及返回文件名对应的下载属性。|

**Estimated code review effort:** 2 (Simple) | ~10 minutes

**Poem**

> 小兔轻点下载键，  
> Blob 月亮暂不眠。  
> 定时器响再归还，  
> 文件名稳稳落地面。  
> 测试胡萝卜，咔嚓甜！

</details>

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<details>
<summary>🚥 Pre-merge checks | ✅ 4 | ❌ 1</summary>

### ❌ Failed checks (1 warning)

|     Check name     | Status     | Explanation                                                                          | Resolution                                                                         |
| :----------------: | :--------- | :----------------------------------------------------------------------------------- | :--------------------------------------------------------------------------------- |
| Docstring Coverage | ⚠️ Warning | Docstring coverage is 0.00% which is insufficient. The required threshold is 80.00%. | Write docstrings for the functions missing them to satisfy the coverage threshold. |

<details>
<summary>✅ Passed checks (4 passed)</summary>

|         Check name         | Status   | Explanation                                              |
| :------------------------: | :------- | :------------------------------------------------------- |
|         Title check        | ✅ Passed | 标题简洁且准确概括了诊断日志下载因过早回收 Blob 而失败的修复。                       |
|      Description check     | ✅ Passed | 包含问题背景、主要改动、验证结果和已知限制，但未按模板提供“范围”、“验收清单”与“已知 defer”分节。   |
|     Linked Issues check    | ✅ Passed | 代码修改与 `#1040` 目标一致：延迟 revokeObjectURL 并补充测试，解决部分浏览器下载静默失败。 |
| Out of Scope Changes check | ✅ Passed | 未见明显超出 `#1040` 范围的改动，新增测试和异常回收逻辑都与诊断日志下载修复直接相关。            |

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<details>
<summary>✨ Finishing Touches</summary>

<details>
<summary>📝 Generate docstrings</summary>

- [ ] <!-- {"checkboxId": "7962f53c-55bc-4827-bfbf-6a18da830691"} --> Create stacked PR
- [ ] <!-- {"checkboxId": "3e1879ae-f29b-4d0d-8e06-d12b7ba33d98"} --> Commit on current branch

</details>
<details>
<summary>🧪 Generate unit tests (beta)</summary>

- [ ] <!-- {"checkboxId": "f47ac10b-58cc-4372-a567-0e02b2c3d479", "radioGroupId": "utg-output-choice-group-4955791502"} -->   Create PR with unit tests
- [ ] <!-- {"checkboxId": "6ba7b810-9dad-11d1-80b4-00c04fd430c8", "radioGroupId": "utg-output-choice-group-4955791502"} -->   Commit unit tests in branch `issue/1040`

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