Enhance less view to consistently expand tabs

[lykhvar]

For better review consistency, we should ensure tab characters are expanded to a fixed number of spaces when using less.

Problem:
Currently, the rendering of tab characters depends on the user's local environment. This can cause inconsistent code alignment, making diffs harder to read and review accurately.

Proposed Solution:
Add the -x or --tabs= flag to the less command to enforce a standard tab width.

This was suggested by @dgl in PR #22