Function tail_logs_glob 

pub fn tail_logs_glob(
    pattern: &str,
    n: usize,
    level: Option<LogLevel>,
) -> Result<Vec<String>, String>

Tail the last n records across every file matching a glob pattern (e.g. /var/log/**/*.log), newest last, optionally keeping only records at or above level. Matched files are read in sorted path order and their records concatenated before the final n are taken; unparseable lines are skipped.

Errors

Returns an error string if the glob pattern is invalid, or if a matched path cannot be read (e.g. it resolves to a directory).