Summary

• Add a Go CLI standards section to STANDARDS.md.
• Recommend Cobra as the default framework for non-trivial Go CLIs while allowing tiny stdlib-only tools.
• Clarify that Go binaries do not use base-wrapper; Base should orchestrate them through manifests, basectl test, and basectl run.
• Document Go CLI behavior expectations for stdout/stderr, JSON, destructive actions, exit codes, context, and validation.
• Record the standards update in the changelog.

Validation

• git diff --check
• LC_ALL=C grep -n '[^ -~]' STANDARDS.md CHANGELOG.md || true\n- rg -n "Go CLI Standards|Cobra|base-go-cli|Go binaries are compiled|basectl test <project>|go test ./\\.\\.|Go CLI guidance" STANDARDS.md CHANGELOG.md\n\nDocs-only change; local runtime tests were not run.\n\nCloses Add Go CLI guidance to Base standards #414