Filter monitoring targets by is_enabled flag instead of hardcoded name

Author: NikolayS

cli/bin/postgres-ai.ts

@@ -503,8 +503,8 @@ targets
         return;
       }
 
-      // Filter out demo placeholder
-      const filtered = instances.filter((inst) => inst.name && inst.name !== "target-database");
+      // Filter out disabled instances (e.g., demo placeholders)
+      const filtered = instances.filter((inst) => inst.name && inst.is_enabled !== false);
 
       if (filtered.length === 0) {
         console.log("No monitoring targets configured");

instances.yml

@@ -2,7 +2,7 @@
   conn_str: postgresql://monitor:monitor_pass@target-db:5432/target_database
   preset_metrics: full
   custom_metrics:
-  is_enabled: true
+  is_enabled: false
   group: default
   custom_tags:
     env: demo