Use npx @backstage/create-app to launch a local IDP. Register an existing GitHub repository to the Backstage Software Catalog.
The Golden Path Template:
Write a template.yaml for Backstage. The UI should ask the developer for a Project Name. When submitted, Backstage should automatically create a new GitHub repository, inject a boilerplate Python application into it, and inject the GitHub Actions DevSecOps pipeline you built in Phase 3.