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

Cargo.lock

@@ -270,7 +270,7 @@ checksum = "a1d728cc89cf3aee9ff92b05e62b19ee65a02b5702cff7d5a377e32c6ae29d8d"
 
 [[package]]
 name = "cm-dashboard"
-version = "0.1.54"
+version = "0.1.55"
 dependencies = [
  "anyhow",
  "chrono",
@@ -292,7 +292,7 @@ dependencies = [
 
 [[package]]
 name = "cm-dashboard-agent"
-version = "0.1.54"
+version = "0.1.55"
 dependencies = [
  "anyhow",
  "async-trait",
@@ -315,7 +315,7 @@ dependencies = [
 
 [[package]]
 name = "cm-dashboard-shared"
-version = "0.1.54"
+version = "0.1.55"
 dependencies = [
  "chrono",
  "serde",

agent/Cargo.toml

@@ -1,6 +1,6 @@
 [package]
 name = "cm-dashboard-agent"
-version = "0.1.54"
+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 = "0.1.54"
+version = "0.1.56"
 edition = "2021"
 
 [dependencies]

dashboard/src/ui/mod.rs

@@ -637,12 +637,15 @@ impl TuiApp {
             return;
         }
 
-        // Calculate worst-case status across all hosts
+        // Calculate worst-case status across all hosts (excluding offline)
         let mut worst_status = Status::Ok;
         for host in &self.available_hosts {
             let host_status = self.calculate_host_status(host, metric_store);
+            // Don't include offline hosts in status aggregation
+            if host_status != Status::Offline {
                 worst_status = Status::aggregate(&[worst_status, host_status]);
             }
+        }
 
         // Use the worst status color as background
         let background_color = Theme::status_color(worst_status);

shared/Cargo.toml

@@ -1,6 +1,6 @@
 [package]
 name = "cm-dashboard-shared"
-version = "0.1.54"
+version = "0.1.56"
 edition = "2021"
 
 [dependencies]