Maven 构建排查：settings.xml、镜像、代理与证书
沿着 settings.xml 一条线查清 Maven 下载与认证问题。
Roxi Team
Practical networking and developer-tooling notes.
NuGet Restore Troubleshooting: Config Inheritance, Source Mapping and Caches
Why dotnet restore fails and how to find the nuget.config that is really in effect.
Cargo 依赖下载排查：索引、crate 与 Git 依赖
三层拆解 cargo build 卡住或拉取失败的原因。