hivectl: migrate dag_progress to hive-jobq-wire's generic GraphNode

hive-host-sock/src/lib.rs

@@ -214,6 +214,14 @@ pub enum HostRequest {
     /// `hivectl`'s wait/progress loop. A multi-step op is a single DAG
     /// (its whole graph in `nodes`). Result: [`HostResponse::dags`].
     QueueDag { id: u64 },
+    /// Fetch one job-queue DAG's container node plus its live subtree, as
+    /// generic `hive-jobq-wire` nodes — `hivectl`'s wait/progress loop.
+    /// Sibling of [`Self::QueueDag`]: same DAG, same
+    /// `id` (the container's own node id, what `queued_dags` already
+    /// carries), through the generic projection instead of the typed
+    /// `DagView`/`NodeView` (kept for `QueueDag`'s other consumer,
+    /// `/api/state.rebuild_queue`). Result: [`HostResponse::nodes`].
+    QueueNodes { id: u64 },
     /// List pending approval requests.
     Pending,
     /// Approve a pending request by id; the action runs immediately.
@@ -539,6 +547,15 @@ pub struct HostResponse {
     /// been evicted from the queue's history tail.
     #[serde(default, skip_serializing_if = "Option::is_none")]
     pub dags: Option<Vec<jobs::DagView>>,
+    /// `QueueNodes` result — the requested DAG's container node plus its
+    /// live subtree, as generic `hive-jobq-wire` nodes. `None` for every
+    /// other request kind. An empty `Vec` means `id` names no live DAG in
+    /// the graph (today: an unknown id — see `JobQueue::dag_nodes`'s doc
+    /// comment for why a *completed* DAG's nodes don't vanish the same way
+    /// `QueueDag`'s do); callers should read the root node's `state` for
+    /// terminality, not emptiness.
+    #[serde(default, skip_serializing_if = "Option::is_none")]
+    pub nodes: Option<Vec<hive_jobq_wire::GraphNode>>,
     /// Free-form operator-facing output lines the client prints verbatim
     /// (one per line). Carries results a request produced daemon-side that
     /// have no structured home — e.g. a freshly-minted matrix token, a
@@ -639,6 +656,17 @@ impl HostResponse {
         }
     }
 
+    /// `QueueNodes` result — the polled DAG's container + subtree, as
+    /// generic wire nodes.
+    #[must_use]
+    pub fn nodes(nodes: Vec<hive_jobq_wire::GraphNode>) -> Self {
+        Self {
+            ok: true,
+            nodes: Some(nodes),
+            ..Self::default()
+        }
+    }
+
     /// A success carrying operator-facing output lines the client prints
     /// verbatim — the result shape for the `Matrix*` provisioning requests.
     #[must_use]