[FEATURE] Support making selections in other panels when user input is required for the next step

Thank you to the author and this plugin for bringing me back to the embrace of neovim. 😆

## Feature Description

Support making selections in other panels when user input is required for the next step

## Use Case

When the cursor is on another panel, Claude asks me to make a choice. Now I need to focus the cursor on the panel where Claude Code is located. After making the choice, I need to return to the original panel's position. Therefore, I hope to input my decision without focusing on the Claude Code panel.

No files, tests, or entry points are named. Start by tracing how this Neovim plugin handles Claude Code prompts that require user input, then determine how selections could be accepted without moving focus from another panel. Done means a user can respond from the original panel and retain its cursor position.

Written by the indexing model from the issue text.