Minor refactor & comments

[bnkamalesh]

[patch] minor refactor to reduce cognitive complexity of function
[-] added comments to relevant sections for clarity on configurations

[Copilot]

Pull Request Overview

This PR performs a minor refactoring to reduce cognitive complexity in the main listening logic and adds detailed documentation comments to configuration fields. The refactor extracts the core listening logic into a separate method while improving error handling flow.

• Extracted the main select statement logic from Listen() into a new listener() method to reduce cognitive complexity
• Enhanced documentation comments for all Config struct fields with default value information and usage guidelines
• Minor cleanup including removal of unused variable and type inference improvement

Reviewed Changes

Copilot reviewed 2 out of 2 changed files in this pull request and generated 2 comments.

File	Description
nibbler.go	Refactored Listen() method by extracting core logic to listener(), enhanced Config field documentation, and removed unused variable
README.md	Updated Config documentation to match the enhanced comments in the code