fix: harden parallel release workflow

[ModerRAS]

Summary

• add workflow concurrency so overlapping release runs on the same ref are serialized
• pin the Backblaze B2 CLI version and update the workflow to use the v4 account clear command
• fail bridge marker lookup on B2 client errors and upgrade setup-python steps to v5

[coderabbitai]

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ℹ️ Review info

⚙️ Run configuration

Configuration used: defaults

Review profile: CHILL

Plan: Pro

Run ID: 41de0213-a170-4be3-97db-646905a34749

📥 Commits

Reviewing files that changed from the base of the PR and between da4b8c8 and 093abd3.

📒 Files selected for processing (2)

• .github/workflows/push.yml
• Docs/Build_and_Test_Guide.md

✨ Finishing Touches

🧪 Generate unit tests (beta)

• Create PR with unit tests
• Commit unit tests in branch fix/parallel-release-followups

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[github-actions]

🔍 PR检查报告

📋 检查概览

• PR: fix: harden parallel release workflow #314
• 分支: fix/parallel-release-followups → master
• 触发事件: pull_request
• 提交: c73467a

🧪 测试结果

平台	状态	详情
Ubuntu	🟢 成功	测试通过，产物已上传
Windows	🟢 成功	测试通过，产物已上传

📊 代码质量

• ✅ 代码格式化检查
• ✅ 安全漏洞扫描
• ✅ 依赖包分析
• ✅ 代码覆盖率收集

📁 测试产物

• 测试结果 artifacts 数量: 2
• 代码覆盖率已上传到Codecov

🔗 相关链接

• PR页面
• Actions日志

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此报告由GitHub Actions自动生成