git-repo-workflow-hygiene

Check and normalize git repository workflow, GitHub HTTPS authentication preflight, and local artifact or secret hygiene. Use when a git-tracked repository should be classified into a clear workflow model such as external upstream fork, user-owned origin, or local-only development; when deciding whether local artifacts belong in `.git/info/exclude` instead of tracked `.gitignore`; when deciding how to handle secret-bearing files; or when GitHub operations should verify GitHub CLI availability, `gh` authentication, and GitHub CLI credential-helper setup before proceeding.