Add detailed change descriptions to `Note` alert in Refrax

Refrax currently performs a limited set of changes. We need to specify the exact changes it makes and their rationale in the 'Note' alert for better clarity.

No file, test, or entry point is named. First locate the implementation of the `Note` alert and the code that performs the listed refactoring changes, then determine how the alert output is verified. Done means the alert explains each change Refrax makes and why it makes it.

Written by the indexing model from the issue text.