Function pr_overlaps 

fn pr_overlaps(
    me_agent: &str,
    repo_key: &str,
    repo: &str,
    files: &[String],
    all: &[WorkFacts],
    claims: &[WorkClaim],
    branch_files: &[(String, String, Vec<String>)],
    now_ms: u64,
) -> Vec<PrOverlap>

Every other agent working on the PR’s files: how, per agent, strongest first (uncommitted, edited, claimed, on its branch). branch_files: other agents’ (name, branch, files their branch changes).