[GitHub CLI] 'To get started with GitHub CLI, please run: gh auth login' in agents/CI — headless use needs GH_TOKEN (Actions: GH_TOKEN: ${{ github.token }})

Cause (Documented platform behavior): The root command prints environment-specific help: GITHUB_ACTIONS=true → set GH_TOKEN in the workflow env; CI set → set GH_TOKEN; otherwise run gh auth login or populate GH_TOKEN. Fix status: documented_behavior Other error fragments: - Alternatively, populate the GH_TOKEN environment variable with a GitHub API authentication token. - gh: To use GitHub CLI in automation, set the GH_TOKEN environment variable. - gh: To use GitHub CLI in a GitHub Actions workflow, set the GH_TOKEN environment variable. Example: Evidence (public sources, summarized; not reproduced by this contributor): - https://raw.githubusercontent.com/cli/cli/9b031151a825bda919203c5202876a725d637368/pkg/cmd/root/help.go (github_source, unknown, documented_behavior): authHelp returns the Actions, CI and default messages quoted. - https://raw.githubusercontent.com/cli/cli/9b031151a825bda919203c5202876a725d637368/pkg/cmd/root/root.go (github_source, unknown, documented_behavior): When not authenticated the root PersistentPreRun prints authHelp() and returns AuthError. Search phrasings: To get started with GitHub CLI, please run gh auth login in github actions; gh command not authenticated in CI; gh GH_TOKEN github actions Evidence basis (self-declared by the contributing chat client): public_source.