[sunerpy]

What and why

0.3.1 的发版候选（run 42733161564，job 129556020370）在安卓腿上失败：从 dl.google.com 读 androidx.window:window-core:1.5.1 的 POM 超时，Gradle 按默认的三次尝试后停用了 Google 仓库，构建失败；重跑一次后通过。

#241 只给 ci.yml 的 android job 加了 .github/scripts/prepare-gradle.sh（钉住 SHA-256 的 Gradle 发行包、每个仓库试八次、间隔从 2 s 翻倍），release-candidate.yml 的 bundle-android 没有。

• release-candidate.yml 的 bundle-android 在 pnpm install 之后、构建之前，经 .release-tooling 运行同一个脚本（受信的工具检出已包含 /.github/scripts/）。
• scripts/release/test_release_workflows.py：新增 GradleDownloads，检查 ci.yml 与 release-candidate.yml 都在 pnpm install 之后、scripts/build-android-rn.sh --unsigned 之前运行这个脚本。改之前它在 release-candidate.yml 上失败，改之后通过。

只改发版工作流和它的测试，不改产品代码，不发版（ci:）。

Verification

• python3 -m unittest discover -s scripts/release -p "test_release_workflows.py"：39 个测试通过；新测试改之前失败（'run: .release-tooling/.github/scripts/prepare-gradle.sh apps/mobile-rn' not found）
• test_fetch_pinned.py 通过，actionlint .github/workflows/release-candidate.yml 通过
• 下一次发版候选的安卓腿日志里出现 prepare-gradle: 一行（要等下一次发版）
• No real host name, token or key in the change (.github/scripts/check-no-production-hosts.sh)

Risk and rollback

只影响发版候选的安卓腿：多一步下载 Gradle 发行包（经 fetch-pinned.sh 核对摘要）并写 GRADLE_USER_HOME/gradle.properties 的两项重试设置，构建产物不变。回退就是还原这个提交。

[codecov]

Codecov Report

✅ All modified and coverable lines are covered by tests.

@@            Coverage Diff             @@
##             main     #245      +/-   ##
==========================================
- Coverage   93.56%   93.56%   -0.01%     
==========================================
  Files         489      489              
  Lines       85860    85860              
  Branches     4909     4909              
==========================================
- Hits        80332    80331       -1     
- Misses       4859     4860       +1     
  Partials      669      669              

Flag	Coverage Δ
rust	93.79% <ø> (-0.01%)	⬇️
web	92.39% <ø> (ø)

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see 10 files with indirect coverage changes

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