2025.10.1 small improvements

• IMPROVEMENT Automatically restore missing structure files
• IMPROVEMENT More robust CSV formatting in downloads
• IMPROVEMENT Direct users to log in if not authorised
• IMPROVEMENT Clearer staging warning message with link to production
• BUG Fix private targets showing up in wrong list

What's Changed

• f/e & b/e -> 2025.10.1 by @mwinokan in #124

Full Changelog: 2025.09.2...2025.10.1