ci: upgrade GitHub Actions to Node 24–compatible versions

[AmintaCCCP]

变更内容

升级 CI workflow 中的 GitHub Actions 版本，解决 Node.js 20 弃用警告：

• actions/checkout@v4 → @v5
• actions/setup-node@v4 → @v5
• actions/upload-artifact@v4 → @v5（3处）
• actions/download-artifact@v4 → @v5

背景

GitHub Actions runner 将于 2026年6月2日 默认使用 Node.js 24 运行 JavaScript actions，2026年9月16日 移除 Node.js 20 支持。v5 版本的 actions 已适配 Node.js 24。

参考：https://github.blog/changelog/2025-09-19-deprecation-of-node-20-on-github-actions-runners/

Summary by CodeRabbit

• Chores
  • Updated CI build workflow: refreshed action versions, upgraded Node runtime to v24, and standardized artifact upload/download across platforms for build and release jobs.
• Note
  • No user-facing changes; purely maintenance to build infrastructure. Build and release steps remain functionally unchanged.

[coderabbitai]

📝 Walkthrough

Walkthrough

The build-desktop workflow updates GitHub Actions: actions/checkout@v6, actions/setup-node@v6 (Node 22 → 24), actions/upload-artifact@v7 in build jobs, and actions/download-artifact@v8 in the release job.

Changes

Workflow Actions Upgrade

Layer / File(s)	Summary
Setup actions upgrade .github/workflows/build-desktop.yml	actions/checkout and actions/setup-node upgraded to @v6; Node version changed from 22 to 24.
Build artifact upload upgrades .github/workflows/build-desktop.yml	Windows, macOS, and Linux artifact upload steps updated from actions/upload-artifact@v4 to @v7.
Release artifact download upgrade .github/workflows/build-desktop.yml	Release job artifact download updated from actions/download-artifact@v4 to @v8.

Estimated code review effort

🎯 3 (Moderate) | ⏱️ ~20 minutes

Poem

🐰
I nibbled YAML lines at dawn's soft glow,
Bumped Node to twenty-four and watched it grow,
Uploads now sail on v7 waves,
Downloads fetch with v8-bright braves,
A joyful rabbit hops, "CI, let's go!"

🚥 Pre-merge checks | ✅ 5

✅ Passed checks (5 passed)

Check name	Status	Explanation
Description Check	✅ Passed	Check skipped - CodeRabbit’s high-level summary is enabled.
Docstring Coverage	✅ Passed	No functions found in the changed files to evaluate docstring coverage. Skipping docstring coverage check.
Linked Issues check	✅ Passed	Check skipped because no linked issues were found for this pull request.
Out of Scope Changes check	✅ Passed	Check skipped because no linked issues were found for this pull request.
Title check	✅ Passed	The title accurately summarizes the main change: upgrading GitHub Actions to versions compatible with Node.js 24, which matches the primary objective of the pull request.

_{✏️ Tip: You can configure your own custom pre-merge checks in the settings.}

✨ Finishing Touches

📝 Generate docstrings

• Create stacked PR
• Commit on current branch

🧪 Generate unit tests (beta)

• Create PR with unit tests
• Commit unit tests in branch fix/node-24-actions-deprecation

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[coderabbitai]

Actionable comments posted: 1

🤖 Prompt for all review comments with AI agents

Verify each finding against current code. Fix only still-valid issues, skip the
rest with a brief reason, keep changes minimal, and validate.

Inline comments:
In @.github/workflows/build-desktop.yml:
- Line 23: The workflow upgrade to actions/checkout@v5 (and
actions/setup-node@v5) requires runner v2.327.1+ and may change caching
behavior; update your CI environment to use a runner version >= v2.327.1,
confirm or pin the runner in the workflow, and verify caching for setup-node by
either removing the explicit cache: 'npm' or confirming package.json has a
packageManager field so the new automatic caching behaves as expected; reference
the actions used (actions/checkout@v5, actions/setup-node@v5), the required
runner version (v2.327.1), the packageManager field in package.json, and the
explicit cache: 'npm' setting when making these changes.

🪄 Autofix (Beta)

Fix all unresolved CodeRabbit comments on this PR:

• Push a commit to this branch (recommended)
• Create a new PR with the fixes

---

ℹ️ Review info

⚙️ Run configuration

Configuration used: defaults

Review profile: CHILL

Plan: Pro

Run ID: e41d30d3-e610-4d39-a23d-0da2de55a80a

📥 Commits

Reviewing files that changed from the base of the PR and between b5a3593 and ded7b80.

📒 Files selected for processing (1)

• .github/workflows/build-desktop.yml

[AmintaCCCP]

已修复 CodeRabbit 审计问题

Actions 版本升级到最新稳定版（v5 仍然触发 Node.js 20 警告）：

• actions/checkout@v5 → @v6
• actions/setup-node@v5 → @v6
• actions/upload-artifact@v5 → @v7
• actions/download-artifact@v5 → @v8

Node.js 版本：node-version 从 '22' 更新到 '24'

其他说明：

• Runner 使用 *-latest 标签，GitHub 已自动更新到 v2.327.1+
• package.json 无 packageManager 字段，cache: 'npm' 设置不受影响