fix(#948): pre-enqueue topology-sorted cascades on meta-update approval

hive-c0re/src/actions.rs

@@ -64,15 +64,30 @@ pub async fn approve(coord: Arc<Coordinator>, id: i64) -> Result<()> {
             // dashboard can show *which* inputs are about to bump.
             let inputs: Vec<String> =
                 serde_json::from_str(&approval.commit_ref).unwrap_or_default();
-            coord.rebuild_queue.enqueue_full(
+            let parent_id = coord.rebuild_queue.enqueue_full(
                 crate::rebuild_queue::QueueKind::MetaUpdate,
                 approval.agent.clone(),
                 crate::rebuild_queue::QueueSource::Approval,
                 format!("approval #{id} meta input update"),
                 None,
-                inputs,
+                inputs.clone(),
                 Some(id),
             );
+            // Pre-enqueue cascade rebuilds in topological order so
+            // agents depending on updated inputs are rebuilt after the
+            // lock bump, matching the dashboard post_meta_update path.
+            let cascade_agents =
+                crate::rebuild_queue::meta_update_cascade_agents(&inputs).await;
+            let cascade_reason = format!("approval #{id} meta input cascade");
+            for name in cascade_agents {
+                coord.rebuild_queue.enqueue(
+                    crate::rebuild_queue::QueueKind::Rebuild,
+                    name,
+                    crate::rebuild_queue::QueueSource::MetaUpdate,
+                    cascade_reason.clone(),
+                    Some(parent_id),
+                );
+            }
             coord.emit_rebuild_queue_snapshot();
             Ok(())
         }