Update version to 0.1.22 and fix system metric status calculation

- Fix /tmp usage status to use proper thresholds instead of hardcoded Ok status
- Fix wear level status to use configurable thresholds instead of hardcoded values
- Add dedicated tmp_status field to SystemWidget for proper /tmp status display
- Remove host-level hourglass icon during service operations
- Implement immediate service status updates after start/stop/restart commands
- Remove active users display and collection from NixOS section
- Fix immediate host status aggregation transmission to dashboard

dashboard/src/ui/widgets/system.rs

@@ -15,7 +15,6 @@ pub struct SystemWidget {
     // NixOS information
     nixos_build: Option<String>,
     config_hash: Option<String>,
-    active_users: Option<String>,
     agent_hash: Option<String>,
     
     // CPU metrics
@@ -33,6 +32,7 @@ pub struct SystemWidget {
     tmp_used_gb: Option<f32>,
     tmp_total_gb: Option<f32>,
     memory_status: Status,
+    tmp_status: Status,
     
     // Storage metrics (collected from disk metrics)
     storage_pools: Vec<StoragePool>,
@@ -66,7 +66,6 @@ impl SystemWidget {
         Self {
             nixos_build: None,
             config_hash: None,
-            active_users: None,
             agent_hash: None,
             cpu_load_1min: None,
             cpu_load_5min: None,
@@ -80,6 +79,7 @@ impl SystemWidget {
             tmp_used_gb: None,
             tmp_total_gb: None,
             memory_status: Status::Unknown,
+            tmp_status: Status::Unknown,
             storage_pools: Vec::new(),
             has_data: false,
         }
@@ -334,11 +334,6 @@ impl Widget for SystemWidget {
                         self.config_hash = Some(hash.clone());
                     }
                 }
-                "system_active_users" => {
-                    if let MetricValue::String(users) = &metric.value {
-                        self.active_users = Some(users.clone());
-                    }
-                }
                 "agent_version" => {
                     if let MetricValue::String(version) = &metric.value {
                         self.agent_hash = Some(version.clone());
@@ -390,6 +385,7 @@ impl Widget for SystemWidget {
                 "memory_tmp_usage_percent" => {
                     if let MetricValue::Float(usage) = metric.value {
                         self.tmp_usage_percent = Some(usage);
+                        self.tmp_status = metric.status.clone();
                     }
                 }
                 "memory_tmp_used_gb" => {
@@ -432,10 +428,6 @@ impl SystemWidget {
             Span::styled(format!("Agent: {}", agent_version_text), Typography::secondary())
         ]));
         
-        let users_text = self.active_users.as_deref().unwrap_or("unknown");
-        lines.push(Line::from(vec![
-            Span::styled(format!("Active users: {}", users_text), Typography::secondary())
-        ]));
 
         // CPU section
         lines.push(Line::from(vec![
@@ -472,7 +464,7 @@ impl SystemWidget {
             Span::styled("  └─ ", Typography::tree()),
         ];
         tmp_spans.extend(StatusIcons::create_status_spans(
-            self.memory_status.clone(),
+            self.tmp_status.clone(),
             &format!("/tmp: {}", tmp_text)
         ));
         lines.push(Line::from(tmp_spans));