File Tagging Regression: Case-Sensitive Filename Matching Breaks Existing Functionality

Question

**Bug Description**
There is a regression when tagging files. The file name must match exactly and be case-sensitive. It used to work before, but now you have to type the file name exactly for it to find it.

**Environment Info**
- Platform: darwin
- Terminal: cursor
- Version: 1.0.69
- Feedback ID: 0c3c36ca-982d-4180-82e0-9c6b3fc45088

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