fix(#977): add MANAGER_CONTAINER=h-root, migrate root container name

hive-c0re/src/agent_sockets.rs

@@ -13,8 +13,6 @@ use std::path::{Path, PathBuf};
 
 use anyhow::{Context, Result};
 
-use crate::lifecycle::MANAGER_NAME;
-
 const HOST_SOCKETS_PATH: &str = "/var/lib/hyperhive/agent-sockets.json";
 
 /// Host-side parent directory holding per-agent socket subdirs. The
@@ -217,6 +215,7 @@ pub fn spawn_poll() {
 #[cfg(test)]
 mod tests {
     use super::*;
+    use crate::lifecycle::MANAGER_NAME;
 
     #[test]
     fn socket_path_for_uses_subdir_layout() {