[FEATURE] Make TCP server bind address configurable

## Feature Description

Currently the bind address is hard coded to 127.0.0.1. If Claude Code is executed inside a container for example it cannot reach the websocket server.

## Use Case

Describe the context or use case for this feature. How would it benefit you and others?

Some companies such as the company I currently work for do not allow running Claude Code locally and enforce running it inside containers. Adding this configuration will allow using the plugin in such cases

## Proposed Solution

Adding bind_address to the plugin config and replacing the hard coded value. Default will remain 127.0.0.1 for security reasons.