Auto-fix is not present

I suggest adding a fix() method to the Defect interface, which will return data about a possible fix for the defect. I propose using a format similar to CodeAction from the LSP protocol. This format supports both simple fixes within a single file and structural changes, such as adding or removing files. By using this format, we can easily integrate the linter into our LSP server. Also, I think it won't be difficult to add support for this data in the eoc

It might make sense to directly include the lsp4j library in our project since it’s lightweight(less than a megabyte) and contains all the necessary classes for working with codeAction

Example usage of lsp4j

CodeAction codeAction = new CodeAction();
codeAction.setEdit(
    new WorkspaceEdit(
        Map.of(
            "./test.txt",
            List.of(
                new TextEdit(
                    new Range(
                        new Position(1, 1),
                        new Position(1, 1)
                    ),
                    "test"
                )
            )
        )
    )
);

Start with the Defect interface and inspect how defects are represented and consumed in this repository. Read the linked CodeAction format, then review the eo-vscode server and eoc references to understand the intended integration points. Done means the proposed fix data can represent both single-file edits and structural workspace changes, with the integration boundaries agreed and covered by tests.