feat: add explicit GitHub repo creation flow#3

rogerchappel merged 2 commits intomainrogerchappel/stackforge:mainfrom

agent/stackforge-github-creation-flow-add-explicit-dry-run-first-gh-cli-integrrogerchappel/stackforge:agent/stackforge-github-creation-flow-add-explicit-dry-run-first-gh-cli-integrCopy head branch name to clipboard