Fix hub store.go: log unchecked json.Unmarshal errors, GetInfraBackupMeta error handling

hub/internal/store/store.go

@@ -123,7 +123,9 @@ func (s *Store) GetNotificationPrefs(customerID string) (*NotificationPrefs, err
 	}
 
 	var events []string
-	json.Unmarshal([]byte(eventsJSON), &events)
+	if err := json.Unmarshal([]byte(eventsJSON), &events); err != nil {
+		s.logger.Printf("[WARN] Corrupt enabled_events JSON for %s: %v", customerID, err)
+	}
 
 	return &NotificationPrefs{
 		CustomerID:    customerID,
@@ -214,7 +216,9 @@ func (s *Store) SaveReport(customerID string, reportJSON []byte) error {
 			Status string `json:"status"`
 		} `json:"health"`
 	}
-	json.Unmarshal(reportJSON, &parsed)
+	if err := json.Unmarshal(reportJSON, &parsed); err != nil {
+		s.logger.Printf("[WARN] Cannot parse report fields for denormalization: %v", err)
+	}
 
 	var backupSnapshot *string
 	if parsed.Backup.LastSnapshot != nil {
@@ -283,7 +287,9 @@ func (s *Store) GetCustomers() ([]CustomerSummary, error) {
 		var report struct {
 			CustomerName string `json:"customer_name"`
 		}
-		json.Unmarshal([]byte(c.ReportJSON), &report)
+		if err := json.Unmarshal([]byte(c.ReportJSON), &report); err != nil {
+			s.logger.Printf("[WARN] Cannot parse customer_name from report JSON for %s: %v", c.CustomerID, err)
+		}
 		c.CustomerName = report.CustomerName
 
 		// Parse disk summary
@@ -447,7 +453,9 @@ func (s *Store) GetInfraBackupMeta(customerID string) (*InfraBackupMeta, error)
 			Mounts []json.RawMessage `json:"mounts"`
 		} `json:"disk_layout"`
 	}
-	if json.Unmarshal([]byte(backupJSON), &parsed) == nil {
+	if err := json.Unmarshal([]byte(backupJSON), &parsed); err != nil {
+		s.logger.Printf("[WARN] Failed to parse infra backup metadata for %s: %v", customerID, err)
+	} else {
 		meta.StackCount = len(parsed.DeployedStacks)
 		meta.DiskCount = len(parsed.DiskLayout.Mounts)
 	}
@@ -499,7 +507,8 @@ func parseDiskSummary(reportJSON string) string {
 			Percent float64 `json:"percent"`
 		} `json:"storage"`
 	}
-	json.Unmarshal([]byte(reportJSON), &report)
+	// ignore parse errors — show "–" on failure
+	json.Unmarshal([]byte(reportJSON), &report) //nolint:errcheck
 
 	var parts []string
 	for _, s := range report.Storage {