fix(inbounds): refresh client rows live over websocket

Two bugs combined to leave per-client traffic / remained / all-time
columns stuck at stale numbers while only the inbound-level row and
the online badge refreshed:

1. Backend (xray + node sync traffic jobs) only included the per-client
   array in the client_stats broadcast when activeEmails / touched
   was non-empty. Cycles with no client deltas — or any node sync that
   failed to fetch a snapshot — shipped only the inbound summary, so
   the frontend had nothing to merge for clients. Replaced both code
   paths with a single GetAllClientTraffics() snapshot per cycle; the
   broadcast now always carries the full client list.

2. Frontend mutated dbInbound.clientStats[i] in place. DBInbound is a
   plain class instance (not wrapped in reactive()), so Vue could not
   see the field-level changes and ClientRowTable's statsMap computed
   stayed cached forever. Added a statsVersion tick bumped on every
   merge and read inside statsMap so the computed re-evaluates and the
   template pulls fresh up/down/allTime/expiryTime each push.

Removed the now-dead emailSet helper from node_traffic_sync_job and
the activeEmails filter from xray_traffic_job.

web/service/inbound.go

@@ -3322,6 +3322,20 @@ func (s *InboundService) GetActiveClientTraffics(emails []string) ([]*xray.Clien
 	return traffics, nil
 }
 
+// GetAllClientTraffics returns the full set of client_traffics rows so the
+// websocket broadcasters can ship a complete snapshot every cycle. The old
+// delta-only path (GetActiveClientTraffics on activeEmails) silently dropped
+// the per-client section whenever no client moved bytes in the cycle or a
+// node sync failed, leaving client rows in the UI stuck at stale numbers.
+func (s *InboundService) GetAllClientTraffics() ([]*xray.ClientTraffic, error) {
+	db := database.GetDB()
+	var traffics []*xray.ClientTraffic
+	if err := db.Model(xray.ClientTraffic{}).Find(&traffics).Error; err != nil {
+		return nil, err
+	}
+	return traffics, nil
+}
+
 type InboundTrafficSummary struct {
 	Id      int   `json:"id"`
 	Up      int64 `json:"up"`