[BUG] `claude://cowork/new` deeplink not working for multiple files

Preflight Checklist

• [x] I have searched existing issues and this hasn't been reported yet
• [x] This is a single bug report (please file separate reports for different bugs)
• [x] I am using the latest version of Claude Code

What's Wrong?

When adding multiple files with a deeplink, Claude tries to add a single file that looks like this:

["path/to/file1","path/to/file2"]

Seems like the array parsing part is missing.

What Should Happen?

Separate files should be attached as context.

Error Messages/Logs

Steps to Reproduce

Launch open claude://cowork/new?file=<file1_path>&file=<file2_path> in the terminal (replace <file1_path>/<file2_path> with an absolute path to different files)

Claude Model

None

Is this a regression?

Yes, this worked in a previous version

Last Working Version

1.9659.2

Claude Code Version

1.12603.1 (3df4fd)

Platform

AWS Bedrock

Operating System

macOS

Terminal/Shell

Terminal.app (macOS)

Additional Information

_No response_