Remove generated scaffold artifacts and add to .gitignore

Co-authored-by: chefgs <7605658+chefgs@users.noreply.github.com>

Author: Copilot

.github/workflows/devops-os-complete.yml

@@ -17,3 +17,13 @@ docs/test-report.html
 hugo-docs/public/
 hugo-docs/resources/
 hugo-docs/.hugo_build.lock
+
+# Scaffold-generated output files (created by `python -m cli.devopsos scaffold *`)
+.gitlab-ci.yml
+Jenkinsfile
+argocd/
+sre/
+
+# GHA workflow generated by scaffold (not the repo's own CI workflows)
+# Only exclude the scaffold-generated workflow name to avoid masking real CI files
+.github/workflows/devops-os-complete.yml