[FEATURE] support mouse scrolling in tmux

Preflight Checklist

• [x] I have searched existing requests and this feature hasn't been requested yet
• [x] This is a single feature request (not multiple features)

Problem Statement

Currently, it's not possible to scroll up or down within a tmux session when using Claude, preventing you from viewing the complete terminal output.

<img width="1369" height="984" alt="Image" src="https://github.com/user-attachments/assets/afd7b45b-1aa4-4c5b-8d77-36104f8d8878" />

Proposed Solution

Increase relevant support.

Alternative Solutions

_No response_

Priority

High - Significant impact on productivity

Feature Category

CLI commands and flags

Use Case Example

_No response_

Additional Context

_No response_