pub fn replace_lines(
project: &ProjectRoot,
relative_path: &str,
start_line: usize,
end_line: usize,
new_content: &str,
) -> Result<(String, ApplyEvidence)>pub fn replace_lines(
project: &ProjectRoot,
relative_path: &str,
start_line: usize,
end_line: usize,
new_content: &str,
) -> Result<(String, ApplyEvidence)>