- Created internal/buildcfg package with DefaultCGO_ENABLED constant - Updated CGO_ENABLED handling to use buildcfg.DefaultCGO_ENABLED - Added original Go stdlib comment for release tags - Simplified toolTags usage by using it directly instead of wrapper function 🤖 Generated with [codeagent](https://github.com/qbox/codeagent) Co-authored-by: luoliwoshang <luoliwoshang@users.noreply.github.com>