swarm-controller: export jobq state rollup as OTEL gauges

swarm-controller/src/main.rs

@@ -37,6 +37,7 @@ use utoipa_axum::{router::OpenApiRouter, routes};
 
 mod auth;
 mod forge;
+mod jobq_metrics;
 mod status;
 mod webhook;
 
@@ -916,6 +917,7 @@ async fn main() -> Result<()> {
         hive_jobq::resources::ResourceTable::new(),
     )));
     spawn_jobq_worker(Arc::clone(&jobq), deps);
+    jobq_metrics::spawn_exporter(Arc::clone(&jobq));
 
     // Same "log and carry on" shape as the queue/bridge/forge wiring above.
     // A controller that cannot hold a webhook secret still serves every