refactor(#2591): hivectl derives DagView label + roll-up state from nodes

hivectl/dag_progress.rs was reading the now-removed DagView.kind/state.
Derive both from the node set via the shared DagView::rollup_state() +
DagView::label() helpers (added to hive-sh4re). Timestamps are DateTime<Utc>
now — elapsed calcs compare in unix seconds. Dropped the live step display
(step left the wire). Test fixtures updated to the slim shape.

hive-sh4re/src/jobs.rs

@@ -192,4 +192,32 @@ impl DagView {
             State::Done
         }
     }
+
+    /// A short human label for the DAG, derived from its node kinds — the
+    /// shared replacement for the old `Template` wire string now that the kind
+    /// isn't sent. Priority-ordered so the most distinctive node wins (an
+    /// approval deploy reads as "deploy" even though it also rebuilds). Purely
+    /// cosmetic (progress/queue display); consumers that need exactness inspect
+    /// the node kinds directly.
+    #[must_use]
+    pub fn label(&self) -> &'static str {
+        let has = |k: &str| self.nodes.iter().any(|n| n.kind == k);
+        if has("approval_deploy") {
+            "deploy"
+        } else if has("meta_lock") {
+            "meta-update"
+        } else if has("create") || has("provision") {
+            "spawn"
+        } else if has("swap") || has("prebuild") || has("post_swap") {
+            "rebuild"
+        } else if has("write_perm_file") {
+            "perm-change"
+        } else if has("signal") || has("drain") {
+            "graceful"
+        } else if has("set_wanted") || has("stop_for_update") {
+            "power"
+        } else {
+            "reconcile"
+        }
+    }
 }