fix(extensions,presets,workflows): resolve private GHES release assets via /api/v3#3157

mnriem merged 7 commits into

github:maingithub/spec-kit:mainfrom

HeroSizy:fix/3147-ghes-release-asset-downloadHeroSizy/spec-kit:fix/3147-ghes-release-asset-downloadCopy head branch name to clipboard