gate each deploy on a swarm build of the agent from internal/meta

swarm-queue-client/src/agent_closures.rs

@@ -0,0 +1,19 @@
+//! The connection side of the per-agent closure KV bucket. The bucket's names
+//! and stored type are `swarm_wire::agent_closures`.
+
+/// Open the closures bucket for writing, creating it if nothing has yet.
+///
+/// **Controller-side only.** `history: 1`: a reader wants the latest build.
+#[cfg(feature = "kv")]
+pub async fn open_or_create(
+    client: &async_nats::Client,
+) -> Result<async_nats::jetstream::kv::Store, crate::Error> {
+    let js = async_nats::jetstream::new(client.clone());
+    crate::kv::open_or_create(
+        &js,
+        swarm_wire::agent_closures::BUCKET,
+        "agent-closures",
+        "The latest system closure the swarm builder built for each agent".to_owned(),
+    )
+    .await
+}