Two-way diff view like opencode

### Describe the feature or problem you'd like to solve

A two way diff view is often much more helpfull to see what has changed

### Proposed solution

Provide a 2-way diff view implementation like opencode has. Could be configurable for user to decide if they want current view or 2-way diff.

### Example prompts or workflows

_No response_

### Additional context

_No response_