chore(release): v0.21.9

[qwen-code-ci-bot]

Automated release PR for v0.21.9. Syncs package.json versions and CHANGELOG.md on main.

[qwen-code-dev-bot]

Automated approval for the release version bump.

[qwen-code-ci-bot]

✅ Qwen Triage finished — view run. See the stage comments in this thread for the result.

✅ Qwen Triage 已完成 —— 查看运行。结果见本线程中的各阶段评论。

[qwen-code-ci-bot]

This run stopped at the gate: the PR was already merged by the release automation before triage got to act — created 15:26 UTC, merged 15:28 UTC with approvals from yiliang114 and qwen-code-dev-bot, the same fast path as v0.21.1–v0.21.8. With the merge decision already made and executed, there is nothing left to gate, so no code-review, CI-evidence, or approval stages follow.

For the record, a static skim of the diff at the reviewed commit found exactly the expected release shape: the v0.21.9 CHANGELOG section plus 0.21.8 → 0.21.9 version bumps across the workspace manifests, the lockfile, and the sandbox image tag — no source code changes and nothing else in the diff.

中文说明

本次运行在门控阶段停止：PR 在 triage 开始处理之前已被发布自动化合并 —— 15:26 UTC 创建，15:28 UTC 在 yiliang114 与 qwen-code-dev-bot 批准后合并，与 v0.21.1–v0.21.8 走的是同一条快速通道。合并决策已经作出并执行，没有可门控的对象，因此不再进行代码审查、CI 证据收集或批准阶段。

备查：在受审提交上对 diff 做了静态速览，内容正是预期的发布形态 —— v0.21.9 的 CHANGELOG 段落，加上各 workspace manifest、lockfile 与 sandbox 镜像标签的 0.21.8 → 0.21.9 版本号升级，无任何源代码改动，diff 中无其他内容。

— Qwen Code · qwen3.8-max

_{Reviewed at da20676f3d09ccb0499749a02d3295ca68053178 · re-run with @qwen-code /triage}

[qwen-code-ci-bot]

Released in v0.21.10.