Function write

core/tests/test_agent_dir_convention.rs:12–16

Write `content` to `dir/rel`, creating parent dirs.

(dir: &Path, rel: &str, content: &str)

/// Write `content` to `dir/rel`, creating parent dirs.
fn write(dir: &Path, rel: &str, content: &str) {
    let path = dir.join(rel);
    fs::create_dir_all(path.parent().unwrap()).unwrap();
    fs::write(path, content).unwrap();
}

/// A realistic agent dir exercising every sub-convention at once.
fn build_full_agent_dir() -> tempfile::TempDir {