Build → TestFlight without a Mac, from any platform.

• App Store Connect: builder auth apple, ios upload --wait, ios submit --testflight | --app-store, native Go client (no altool, no Transporter)
• ios release: build with the next build number from App Store Connect, upload, wait for processing, hand to TestFlight; ios build --submit
• Build profiles in builder.json, EAS-style: profiles.<name>.distribution (development, ad-hoc/internal, store, enterprise), derived configuration, env, defaultProfile
• Automatic signing: signing setup creates bundle IDs, certificates, devices (from MobAI or --device) and profiles through the App Store Connect API; one secret set per distribution; extension targets get their own profiles; missing sets are provisioned by ios build --profile
• Managed Expo projects: expo prebuild on the runner; the project's package manager (npm, yarn, pnpm, bun) and Node version are used
• TestFlight management: builder asc apps|builds|groups|testers|users
• Runner: export method follows the profile, signing settings set on the app target only (fixes every CocoaPods dynamic-framework project), 90-minute job timeout, runner errors shown locally, provider rejections shown with their reason

Existing repositories: run builder init once to refresh the workflow files.