[Feature Request] Add editor-style input controls (Select All, Delete All, cursor positioning)

Question

**Bug Description**
Please implement editor-style features such as Select All, Delete All, and the ability to place the cursor at a specific location, similar to Warp Terminal. That would be super helpful.

**Environment Info**
- Platform: darwin
- Terminal: WarpTerminal
- Version: 2.0.76
- Feedback ID: 5f9c5454-22f1-4441-931e-b61ac77afd05

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