refactor(#2285): drop coordinator 1:1 path accessors, callers use paths:: directly

hive-c0re/src/bin/hivectl.rs

@@ -1048,7 +1048,7 @@ fn human_bytes(n: u64) -> String {
 /// "needs root" error fixes that first-run footgun, where running a
 /// privileged verb without sudo reported as a missing agent.
 fn agent_exists(name: &str) -> Result<bool> {
-    let root = Coordinator::agent_state_root(name);
+    let root = hive_c0re::paths::agent_state_dir(name);
     match root.try_exists() {
         Ok(found) => Ok(found),
         Err(e) if e.kind() == std::io::ErrorKind::PermissionDenied => bail!(