Function format_file_group

atomic-agent/src/record/message.rs:340–348

Format a group of files with a verb prefix. - 1-3 files: `"Add src/main.rs, Cargo.toml, lib.rs"` - 4+ files: `"Add src/main.rs, Cargo.toml (+2 more)"`

(verb: &str, files: &[String])

/// - 1-3 files: `"Add src/main.rs, Cargo.toml, lib.rs"`
/// - 4+ files:  `"Add src/main.rs, Cargo.toml (+2 more)"`
pub(crate) fn format_file_group(verb: &str, files: &[String]) -> String {
    match files.len() {
        0 => String::new(),
        1 => format!("{} {}", verb, files[0]),
        2 => format!("{} {}, {}", verb, files[0], files[1]),
        3 => format!("{} {}, {}, {}", verb, files[0], files[1], files[2]),
        n => format!("{} {}, {} (+{} more)", verb, files[0], files[1], n - 2),
    }
}

/// Truncate a prompt to the given maximum length, adding "..." if needed.
pub(crate) fn truncate_prompt(prompt: &str, max_len: usize) -> String {