feat(inbounds): support Unix domain socket path in Listen field (#4429)

UDS listen already worked for proxying (the listen string is passed to xray verbatim and port 0 is accepted), and the Go sub/link layer already ignores the bind listen. The only gap was the frontend resolveAddr, which would put a socket-path listen into share/sub links (e.g. vless://uuid@/run/xray/x.sock:0). resolveAddr now treats a path-style listen (starting with / or @) as having no client-reachable address and falls back to hostOverride/hostname. Adds a test and a Listen-field help hint across all locales.

web/service/client.go

@@ -245,10 +245,7 @@ func (s *ClientService) SyncInbound(tx *gorm.DB, inboundId int, clients []model.
 			if incoming.CreatedAt > 0 && (row.CreatedAt == 0 || incoming.CreatedAt < row.CreatedAt) {
 				row.CreatedAt = incoming.CreatedAt
 			}
-			preservedUpdatedAt := row.UpdatedAt
-			if incoming.UpdatedAt > preservedUpdatedAt {
-				preservedUpdatedAt = incoming.UpdatedAt
-			}
+			preservedUpdatedAt := max(incoming.UpdatedAt, row.UpdatedAt)
 			row.UpdatedAt = preservedUpdatedAt
 			if err := tx.Save(row).Error; err != nil {
 				return err