Go

• Use latest Go version (verify, don't assume). Build with -ldflags="-s -w"
• Check modernity: go run golang.org/x/tools/gopls/internal/analysis/modernize/cmd/modernize@latest -fix -test ./...
• Copy golangci config: $HOME/git/sammcj/mcp-devtools/.golangci.yml
• Idiomatic Go: explicit error handling, early returns, small interfaces, composition, defer for cleanup, table-driven tests