Fix dashboard UI: correct pending color (blue) and use host_status_summary metric

agent/src/agent.rs

@@ -156,14 +156,18 @@ impl Agent {
         debug!("Broadcasting all cached metrics via ZMQ");
 
         // Get all cached metrics from the metric manager
-        let cached_metrics = self.metric_manager.get_all_cached_metrics().await?;
+        let mut cached_metrics = self.metric_manager.get_all_cached_metrics().await?;
+
+        // Add the host status summary metric from status manager
+        let host_status_metric = self.host_status_manager.get_host_status_metric();
+        cached_metrics.push(host_status_metric);
 
         if cached_metrics.is_empty() {
             debug!("No cached metrics to broadcast");
             return Ok(());
         }
 
-        debug!("Broadcasting {} cached metrics", cached_metrics.len());
+        debug!("Broadcasting {} cached metrics (including host status summary)", cached_metrics.len());
 
         // Create and send message with all cached data
         let message = MetricMessage::new(self.hostname.clone(), cached_metrics);

agent/src/status/mod.rs

@@ -128,6 +128,21 @@ impl HostStatusManager {
         );
     }
 
+    /// Get the current host status as a metric for broadcasting to dashboard
+    pub fn get_host_status_metric(&self) -> Metric {
+        Metric {
+            name: "host_status_summary".to_string(),
+            value: cm_dashboard_shared::MetricValue::String(format!(
+                "Host aggregated from {} services", 
+                self.service_statuses.len()
+            )),
+            status: self.current_host_status,
+            timestamp: Utc::now().timestamp() as u64,
+            description: Some("Aggregated host status from all services".to_string()),
+            unit: None,
+        }
+    }
+
     /// Calculate the overall host status based on all service statuses
     fn calculate_host_status(&self) -> Status {
         if self.service_statuses.is_empty() {