refactor: remove Subject field from Conversation model and related logic, replace with CustomerName

web/app/dashboard/conversation-monitor/_components/detail.tsx

@@ -249,7 +249,7 @@ export function ConversationDetailDialog({
       onOpenChange={onOpenChange}
       title={
         <div className="flex items-center gap-3">
-          <span>{currentConversation?.subject || "会话详情"}</span>
+          <span>{currentConversation?.customerName || "会话详情"}</span>
 
           <div>
             {statusMeta ? (

web/app/dashboard/conversation-monitor/page.tsx

@@ -597,7 +597,7 @@ export default function DashboardConversationsPage() {
     setActionLoadingId(item.id)
     try {
       await markConversationRead(item.id)
-      toast.success(`已标记已读：${item.subject || `#${item.id}`}`)
+      toast.success(`已标记已读：${item.customerName || `#${item.id}`}`)
       await loadConversations()
       if (detailItem?.id === item.id) {
         await refreshDetail()
@@ -613,7 +613,7 @@ export default function DashboardConversationsPage() {
     setActionLoadingId(item.id)
     try {
       await dispatchConversation(item.id)
-      toast.success(`已触发自动分配：${item.subject || `#${item.id}`}`)
+      toast.success(`已触发自动分配：${item.customerName || `#${item.id}`}`)
       await loadConversations()
       if (detailItem?.id === item.id) {
         await refreshDetail()
@@ -724,7 +724,7 @@ export default function DashboardConversationsPage() {
                     <TableRow key={item.id}>
                       <TableCell className="max-w-60">
                         <div className="min-w-0">
-                          <div className="font-medium">{item.subject || `会话 #${item.id}`}</div>
+                          <div className="font-medium">{item.customerName || `客户 #${item.customerId || item.id}`}</div>
                           <div className="mt-1 text-sm text-muted-foreground">
                             渠道ID：{item.channelId || "-"}
                           </div>
@@ -755,7 +755,7 @@ export default function DashboardConversationsPage() {
                           <DropdownMenu>
                             <DropdownMenuTrigger
                               render={<Button variant="outline" size="icon-sm" />}
-                              aria-label={`更多操作 ${item.subject || item.id}`}
+                              aria-label={`更多操作 ${item.customerName || item.id}`}
                             >
                               <MoreHorizontalIcon />
                             </DropdownMenuTrigger>

web/app/dashboard/conversations/_components/chat-panel.tsx

@@ -480,7 +480,7 @@ export function ChatPanel() {
             <DialogTitle>确认认领会话</DialogTitle>
             <DialogDescription>
               {conversation
-                ? `确认认领“${conversation.subject}”吗？认领后会话会进入我的列表。`
+                ? `确认认领“${conversation.customerName || `客户 #${conversation.customerId || conversation.id}`}”吗？认领后会话会进入我的列表。`
                 : "确认认领当前会话吗？"}
             </DialogDescription>
           </DialogHeader>

web/app/dashboard/conversations/_components/conversation-list.tsx

@@ -73,7 +73,7 @@ export function ConversationList({ onAfterSelect }: ConversationListProps) {
                     <div className="min-w-0 flex-1">
                       <div className="flex items-center gap-1.5">
                         <span className="min-w-0 flex-1 truncate font-medium text-sm leading-4">
-                          {conversation.subject}
+                          {conversation.customerName || `客户 #${conversation.customerId || conversation.id}`}
                         </span>
                         {conversation.agentUnreadCount > 0 ? (
                           <div className="flex size-4.5 shrink-0 items-center justify-center rounded-full bg-primary text-[10px] text-primary-foreground">

web/app/dashboard/conversations/page.tsx

@@ -272,7 +272,7 @@ export default function ConversationsPage() {
               <div className="min-w-0">
                 <div className="flex items-center gap-2">
                   <p className="min-w-0 truncate font-medium leading-tight">
-                    {conversation.subject}
+                    {conversation.customerName || `客户 #${conversation.customerId || conversation.id}`}
                   </p>
                   <span
                     className={`inline-flex shrink-0 items-center gap-1 rounded-full border px-2 text-[11px] ${
@@ -474,7 +474,7 @@ export default function ConversationsPage() {
           conversation
             ? {
                 id: conversation.id,
-                subject: conversation.subject,
+                customerName: conversation.customerName,
                 customerId: conversation.customerId ?? 0,
                 lastMessageSummary: conversation.lastMessageSummary,
                 currentAssigneeId: conversation.currentAssigneeId,

web/app/dashboard/tickets/_components/create-ticket-from-conversation-dialog.tsx

@@ -7,7 +7,7 @@ import { EditDialog } from "./edit"
 
 type ConversationSeed = {
   id: number
-  subject: string
+  customerName: string
   customerId?: number
   lastMessageSummary?: string
   currentAssigneeId?: number
@@ -28,7 +28,7 @@ export function CreateTicketFromConversationDialog({
 }: CreateTicketFromConversationDialogProps) {
   const initialValues = conversation
     ? {
-        title: conversation.subject || "",
+        title: conversation.customerName || "",
         description: conversation.lastMessageSummary || "",
         priority: 2,
         severity: 1,

web/app/dashboard/tickets/detail/page.tsx

@@ -880,7 +880,7 @@ export default function TicketDetailPage() {
                       {sourceConversation ? (
                         <SurfacePanel className="p-2.5">
                           <div className="text-sm font-medium">
-                            {sourceConversation.subject || "未命名会话"}
+                            {sourceConversation.customerName || "未命名客户"}
                           </div>
                           <div className="mt-2 flex flex-wrap gap-2 text-xs text-muted-foreground">
                             <span>

web/lib/api/admin.ts

@@ -109,7 +109,8 @@ export type ConversationParticipant = {
 export type AdminConversation = {
   id: number
   channelId: number
-  subject: string
+  customerId: number
+  customerName: string
   status: number
   serviceMode: number
   priority: number

web/lib/api/agent.ts

@@ -37,7 +37,7 @@ export type AgentConversation = {
   aiAgentId?: number
   channelId?: number
   customerId?: number
-  subject: string
+  customerName: string
   status: number
   serviceMode: number
   priority: number

web/lib/api/im.ts

@@ -34,7 +34,7 @@ export type ImConversationParticipant = {
 export type ImConversation = {
   id: number
   channelId: number
-  subject: string
+  customerName: string
   status: number
   serviceMode: number
   priority: number