Provide a mass replace tool for the model

[agladysh]

The model often struggles with simple refactoring, making multiple edits per file on variable renames and similar changes, and risking (and often making) a mistake in each one.

Please provide the model with a mass replace tool. E.g. Claude Code's MultiEdit seems to work okay.

[github-actions]

This issue might be a duplicate of existing issues. Please check:

• Model is confused by tool errors #3030: Model is confused by tool errors - specifically mentions model struggles with refactoring, making multiple edits per file on variable renames, and having to resort to sed commands when edit tool fails

Feel free to ignore if none of these address your specific case.

[agladysh]

Apparently, the multiedit tool is implemented, but is not in the registry.

Please consider enabling it.

[rekram1-node]

the current edit tool allows a param that acts as a replace all but as you are noticing it isnt the best performing rn. I think we need to either do what you are suggesting or we need to improve the edit tool in some other ways