hive-c0re/hivectl/hive-agent: pause as a job-queue DAG node (closes #3056)

hivectl/src/cli.rs

@@ -465,7 +465,12 @@ pub enum AgentCmd {
     /// up while it burns no tokens. Inbox messages queue unacked and the
     /// backlog drains on `resume`. Sticky: it survives a restart, and
     /// pausing a stopped agent makes it come up paused.
-    Pause,
+    Pause {
+        /// Return immediately after the pause DAG is queued instead of
+        /// waiting for the harness to acknowledge it.
+        #[arg(long)]
+        no_wait: bool,
+    },
     /// Resume this paused agent — it drains whatever queued up while parked.
     Resume,
     /// Start this EXISTING agent container. Fails immediately if `name`