feat(node-sync): push global client usage to nodes for display and local enforcement

A client attached to several panels has one aggregated row on each
master, but a node only ever saw its local share: the node UI
under-reported usage, and the node kept serving a client whose
cross-panel total had already exceeded its quota — the master's disable
push doesn't kill established connections unless the node restarts xray
itself.

Masters now push their aggregated per-client counters to each node from
NodeTrafficSyncJob (throttled, scoped to the clients that node hosts).
The node stores them in the new client_global_traffics side table keyed
by (masterGuid, email), overwritten on every push so a master-side
reset propagates, and:

- overlays max(local, pushed) onto UI read paths (slim inbound list,
  inbound detail, clients list, WS stats, per-email lookups). The full
  /panel/api/inbounds/list stays un-overlaid on purpose: it doubles as
  the traffic snapshot masters poll, and overlaying it would corrupt
  every master's delta accounting;
- trips disableInvalidClients when any master's pushed total exceeds
  the client's quota, so the existing RestartXrayOnClientDisable flow
  disconnects the client locally;
- clears the side rows on traffic reset, auto-renew, and client
  delete, keeping a renewed quota window clean.

Supersedes #5204, which folded pushed globals into client_traffics and
compensated with read-back baselines — that double-counted first-sight
emails and could not work with several masters sharing one node.

internal/web/service/inbound.go

@@ -82,6 +82,9 @@ func (s *InboundService) GetInboundsSlim(userId int) ([]*model.Inbound, error) {
 	// so the list's depleted/expiring badges see every client; the UUID/SubId
 	// enrichment stays skipped. Must run before slimming strips the settings.
 	s.backfillClientStats(db, inbounds)
+	// Slim feeds the panel UI only (masters poll the full list), so the badge
+	// math may see the cross-panel totals a master pushed.
+	s.overlayInboundsClientStats(db, inbounds)
 	for _, ib := range inbounds {
 		ib.Settings = slimSettingsClients(ib.Settings)
 	}
@@ -571,6 +574,7 @@ func (s *InboundService) GetInboundDetail(id int) (*model.Inbound, error) {
 		return nil, err
 	}
 	s.enrichClientStats(db, []*model.Inbound{inbound})
+	s.overlayInboundsClientStats(db, []*model.Inbound{inbound})
 	return inbound, nil
 }