feat(#1014): rename manager agent root→ruth across all crates + frontend

hive-sh4re/src/lib.rs

@@ -571,7 +571,6 @@ pub enum Response {
     /// live in `docs/conventions.md::Agent metadata`.
     AgentMeta {
         name: String,
-        role: String,
         #[serde(default = "default_true")]
         running: bool,
         #[serde(default, skip_serializing_if = "Option::is_none")]

hive-sh4re/src/priv_proto.rs

@@ -8,9 +8,9 @@ use serde::{Deserialize, Serialize};
 /// Default socket path for the privileged helper.
 pub const PRIV_SOCK: &str = "/run/hive/priv.sock";
 
-/// Manager container name. Used by `hive-priv` to skip the `h-` prefix
-/// and by `hive-c0re` for identity checks.
-pub const MANAGER_NAME: &str = "root";
+/// Manager logical agent name. The manager's system container name is
+/// `h-ruth` (same `h-` prefix convention as every other agent).
+pub const MANAGER_NAME: &str = "ruth";
 
 /// Sub-agent container prefix. System container name = `h-<agent_name>`.
 pub const AGENT_PREFIX: &str = "h-";