[Bug] Claude Desktop hangs during research with large source collection (329+ sources)

Question

**Bug Description**
My Claude Chat research in the desktop application is stuck now for several times for 90 minutes with 329 sources since 80 minutes. This is a bug. I tried it several times today. I am on the latest Claude desktop version and using 3.7 Opus.

**Environment Info**
- Platform: darwin
- Terminal: Apple_Terminal
- Version: 2.1.112
- Feedback ID: b6367c0b-aca1-4624-81cd-d984dd9d6a3d

**Errors**
```json
[]
```