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Common utility and validation helpers for iuvc projects
iuvc
runCommand(commandInput, options)：异步执行命令，返回 ok/code/stdout/stderrrunCommandOrThrow(commandInput, options)：异步执行命令，失败直接抛错runCommandSync(commandInput, options)：同步执行命令，返回结构化执行结果iuvc-utils.js 作为对外统一导出入口，其他工具模块不应反向依赖该文件。validate.js 仅保留纯校验逻辑，不依赖外部函数或其他业务模块。validate.js。iuvc-utils.js 中统一导出。