Improved Windows path support in the CLI

CLI version 0.4.20 makes file uploads work reliably on Windows, whether you run commands by hand or from a script.

🚀 What’s New

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• Wildcard patterns - files upload "C:\Photos\*.jpg" now uploads the matching files, even in shells that don’t expand wildcards (see upload guide).

🐛 Fixes

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• Windows folder uploads - uploading a folder like C:\Photos or a network path like \\server\share\images no longer reports “No files found”.
• Special characters in folder names - folders such as Photos [2024] now upload correctly on every platform.
• Trailing slashes - job download --output exports/ now saves into the folder on Windows instead of failing.