Function overlaps 

pub fn overlaps(
    file: &EditedFile,
    me_agent: &str,
    all: &[WorkFacts],
    now_ms: u64,
) -> Vec<Overlap>

Every other agent with file uncommitted, or edited in the last EDITED_WINDOW_MS. The editor itself (me_agent, by name in any channel, so its own other clones and instances too) is left out. One entry per agent, uncommitted first.