fix: primary node failover

public/view-models.js

@@ -13,7 +13,8 @@ class ClusterViewModel extends ViewModel {
             error: null,
             expandedCards: new Map(),
             activeTabs: new Map(), // Store active tab for each node
-            lastUpdateTime: null
+            lastUpdateTime: null,
+            onlineNodes: 0
         });
         
         // Initialize cluster status after a short delay to allow components to subscribe
@@ -39,10 +40,16 @@ class ClusterViewModel extends ViewModel {
             const response = await window.apiClient.getClusterMembers();
             console.log('ClusterViewModel: Got response:', response);
             
+            const members = response.members || [];
+            const onlineNodes = Array.isArray(members)
+                ? members.filter(m => m && m.status === 'active').length
+                : 0;
+            
             // Use batch update to preserve UI state
             this.batchUpdate({
-                members: response.members || [],
-                lastUpdateTime: new Date().toISOString()
+                members: members,
+                lastUpdateTime: new Date().toISOString(),
+                onlineNodes: onlineNodes
             }, { preserveUIState: true });
             
             // Restore expanded cards and active tabs