fix(clients): preserve ClientRecord on inbound delete + filter Attached inbounds to multi-client protocols

Replace the global orphan sweep in setRemoteTrafficLocked with a
per-inbound diff cleanup: only delete a ClientRecord whose email
disappeared from a snap-tracked inbound (i.e. a node-side delete).
Inbounds that vanished entirely from the snap (e.g. admin deleted
the inbound on master) aren't iterated, so a client whose last
attachment came from that inbound is now left alone instead of
being deleted alongside the inbound.

ClientFormModal and ClientBulkAddModal now filter the Attached
inbounds dropdown to protocols that actually support multiple
clients: shadowsocks, vless, vmess, trojan, hysteria, hysteria2,
and portfallback (which routes through VLESS settings).

Co-Authored-By: Claude Opus 4.7 <noreply@anthropic.com>

frontend/src/pages/clients/ClientBulkAddModal.vue

@@ -72,8 +72,14 @@ const delayedExpireDays = computed({
   set: (days) => { form.expiryTime = -86400000 * (days || 0); },
 });
 
+const MULTI_CLIENT_PROTOCOLS = new Set([
+  'shadowsocks', 'vless', 'vmess', 'trojan', 'hysteria', 'hysteria2', 'portfallback',
+]);
+
 const inboundOptions = computed(() =>
-  (props.inbounds || []).map((ib) => ({
+  (props.inbounds || [])
+    .filter((ib) => MULTI_CLIENT_PROTOCOLS.has(ib.protocol))
+    .map((ib) => ({
       label: `${ib.remark || `#${ib.id}`} · ${ib.protocol}:${ib.port}`,
       value: ib.id,
     })),

frontend/src/pages/clients/ClientFormModal.vue

@@ -85,8 +85,14 @@ function gbToBytes(gb) {
   return Math.round(gb * 1024 * 1024 * 1024);
 }
 
+const MULTI_CLIENT_PROTOCOLS = new Set([
+  'shadowsocks', 'vless', 'vmess', 'trojan', 'hysteria', 'hysteria2', 'portfallback',
+]);
+
 const inboundOptions = computed(() =>
-  (props.inbounds || []).map((ib) => ({
+  (props.inbounds || [])
+    .filter((ib) => MULTI_CLIENT_PROTOCOLS.has(ib.protocol))
+    .map((ib) => ({
       label: `${ib.remark || `#${ib.id}`} · ${ib.protocol}:${ib.port}`,
       value: ib.id,
       title: `${ib.remark || ''} (${ib.protocol}:${ib.port})`,

web/service/inbound.go

@@ -1277,6 +1277,11 @@ func (s *InboundService) setRemoteTrafficLocked(nodeID int, snap *runtime.Traffi
 		}
 	}
 
+	type oldSet struct {
+		inboundID int
+		emails    map[string]struct{}
+	}
+	var perInboundOld []oldSet
 	for _, snapIb := range snap.Inbounds {
 		if snapIb == nil {
 			continue
@@ -1285,6 +1290,19 @@ func (s *InboundService) setRemoteTrafficLocked(nodeID int, snap *runtime.Traffi
 		if !ok {
 			continue
 		}
+		var oldEmailsRows []string
+		if err := tx.Table("clients").
+			Joins("JOIN client_inbounds ON client_inbounds.client_id = clients.id").
+			Where("client_inbounds.inbound_id = ?", c.Id).
+			Pluck("email", &oldEmailsRows).Error; err == nil {
+			oldEmails := make(map[string]struct{}, len(oldEmailsRows))
+			for _, e := range oldEmailsRows {
+				if e != "" {
+					oldEmails[e] = struct{}{}
+				}
+			}
+			perInboundOld = append(perInboundOld, oldSet{inboundID: c.Id, emails: oldEmails})
+		}
 
 		clients, gcErr := s.GetClients(snapIb)
 		if gcErr != nil {
@@ -1310,21 +1328,41 @@ func (s *InboundService) setRemoteTrafficLocked(nodeID int, snap *runtime.Traffi
 		}
 	}
 
-	var orphanEmails []string
+	for _, old := range perInboundOld {
+		var stillAttached []string
 		if err := tx.Table("clients").
-		Joins("LEFT JOIN client_inbounds ON client_inbounds.client_id = clients.id").
+			Joins("JOIN client_inbounds ON client_inbounds.client_id = clients.id").
-		Where("client_inbounds.client_id IS NULL").
+			Where("client_inbounds.inbound_id = ?", old.inboundID).
-		Pluck("clients.email", &orphanEmails).Error; err != nil {
+			Pluck("email", &stillAttached).Error; err != nil {
-		logger.Warning("setRemoteTraffic: orphan sweep query failed:", err)
+			continue
-	} else if len(orphanEmails) > 0 {
-		if err := tx.Where("email IN ?", orphanEmails).Delete(&model.ClientRecord{}).Error; err != nil {
-			logger.Warning("setRemoteTraffic: orphan sweep delete ClientRecord failed:", err)
 		}
-		if err := tx.Where("email IN ?", orphanEmails).Delete(&xray.ClientTraffic{}).Error; err != nil {
+		stillSet := make(map[string]struct{}, len(stillAttached))
-			logger.Warning("setRemoteTraffic: orphan sweep delete ClientTraffic failed:", err)
+		for _, e := range stillAttached {
+			stillSet[e] = struct{}{}
+		}
+		for email := range old.emails {
+			if _, kept := stillSet[email]; kept {
+				continue
+			}
+			var attachmentCount int64
+			if err := tx.Table("client_inbounds").
+				Joins("JOIN clients ON clients.id = client_inbounds.client_id").
+				Where("clients.email = ?", email).
+				Count(&attachmentCount).Error; err != nil {
+				continue
+			}
+			if attachmentCount > 0 {
+				continue
+			}
+			if err := tx.Where("email = ?", email).Delete(&model.ClientRecord{}).Error; err != nil {
+				logger.Warning("setRemoteTraffic: delete ClientRecord", email, "failed:", err)
+			}
+			if err := tx.Where("email = ?", email).Delete(&xray.ClientTraffic{}).Error; err != nil {
+				logger.Warning("setRemoteTraffic: delete ClientTraffic", email, "failed:", err)
 			}
 			structuralChange = true
 		}
+	}
 
 	if err := tx.Commit().Error; err != nil {
 		return false, err