{"ok":true,"fn":"media-notify-email","env_ready":true,"missing_keys":[],"hint":"Environment OK. POST with Authorization: Bearer <supabase_access_token> to copy media + send email. Safe test: GKZ_MEDIA_NOTIFY_DRY_RUN=true and GKZ_NOTIFICATION_REDIRECT_TO to your inbox (skips library insert; subject [GKZ dry run])."}