Add exclude_email_metrics configuration option

- Add exclude_email_metrics field to AgentConfig for filtering email notifications
- Metrics matching excluded names skip notification processing but still appear in dashboard
- Optional field with serde(default) for backward compatibility
- Bump version to 0.1.56

agent/Cargo.toml

@@ -1,6 +1,6 @@
 [package]
 name = "cm-dashboard-agent"
-version = "0.1.55"
+version = "0.1.56"
 edition = "2021"
 
 [dependencies]

agent/src/agent.rs

@@ -201,6 +201,12 @@ impl Agent {
     async fn process_metrics(&mut self, metrics: &[Metric]) -> bool {
         let mut status_changed = false;
         for metric in metrics {
+            // Filter excluded metrics from email notification processing only
+            if self.config.exclude_email_metrics.contains(&metric.name) {
+                debug!("Excluding metric '{}' from email notification processing", metric.name);
+                continue;
+            }
+            
             if self.host_status_manager.process_metric(metric, &mut self.notification_manager).await {
                 status_changed = true;
             }
@@ -226,6 +232,7 @@ impl Agent {
         format!("v{}", env!("CARGO_PKG_VERSION"))
     }
 
+
     async fn handle_commands(&mut self) -> Result<()> {
         // Try to receive commands (non-blocking)
         match self.zmq_handler.try_receive_command() {

agent/src/config/mod.rs

@@ -17,6 +17,9 @@ pub struct AgentConfig {
     pub notifications: NotificationConfig,
     pub status_aggregation: HostStatusConfig,
     pub collection_interval_seconds: u64,
+    /// List of metric names to exclude from email notifications
+    #[serde(default)]
+    pub exclude_email_metrics: Vec<String>,
 }
 
 /// ZMQ communication configuration

dashboard/Cargo.toml

@@ -1,6 +1,6 @@
 [package]
 name = "cm-dashboard"
-version = "0.1.55"
+version = "0.1.56"
 edition = "2021"
 
 [dependencies]

shared/Cargo.toml

@@ -1,6 +1,6 @@
 [package]
 name = "cm-dashboard-shared"
-version = "0.1.55"
+version = "0.1.56"
 edition = "2021"
 
 [dependencies]