664: address argus nits (must_use + DEFAULT_DAEMON_SOCKET path)

hive-c0re/src/lifecycle.rs

@@ -33,6 +33,7 @@ pub const CONTAINER_RUNTIME_MOUNT: &str = "/run/hive";
 /// service environment sets `HOME` to the same path, so the OAuth
 /// session survives container restarts the same way the constant
 /// did.
+#[must_use]
 pub fn container_claude_mount(name: &str) -> String {
     format!("/home/{name}/.claude")
 }