update

backend/internal/handler/instance.go

@@ -159,17 +159,20 @@ func TestConnection(c *gin.Context) {
 	}
 
 	result := testDBConnectionFull(&instance)
-	// Update version & cluster_mode in DB if detected
+	// Keep the persisted list status in sync with an explicit connection test.
 	updates := map[string]interface{}{}
+	if result.Success {
+		updates["status"] = "connected"
+	} else {
+		updates["status"] = "error"
+	}
 	if result.Success && result.Version != "" {
 		updates["version"] = result.Version
 	}
 	if instance.DBType == "redis" {
 		updates["cluster_mode"] = result.ClusterMode
 	}
-	if len(updates) > 0 {
-		model.DB.Model(&model.Instance{}).Where("id = ?", instance.ID).Updates(updates)
-	}
+	model.DB.Model(&model.Instance{}).Where("id = ?", instance.ID).Updates(updates)
 	if result.Success {
 		c.JSON(http.StatusOK, gin.H{"success": true, "message": result.Message, "version": result.Version, "cluster_mode": result.ClusterMode})
 	} else {