On approve, show the tester's zero-touch deploy options with Copy buttons;
manual code kept as fallback.
Co-Authored-By: Claude Opus 4.8 <noreply@anthropic.com>
Owner can add a tester directly (email/label) via the existing
POST /api/control/admin/applicants proxy route, instead of relying on
the not-yet-built public /register page.
Co-Authored-By: Claude Opus 4.8 <noreply@anthropic.com>