支持客服入口按业务场景分流到客服分组

联系客服支持 scene（general/mohong），按用户与场景复用会话；摸大红入口走摸大红分组选人。

frontend/src/features/chats/api/chats.ts

@@ -14,6 +14,8 @@ export interface ChatParticipant {
   joined_at: string
 }
 
+export type SupportScene = 'general' | 'mohong'
+
 export interface ChatConversation {
   id: number
   order_id: number | null
@@ -24,6 +26,7 @@ export interface ChatConversation {
   latest_handoff_status?: string
   latest_refund_status?: string
   type: string
+  support_scene?: string
   title: string
   status: string
   role: 'renter' | 'owner' | 'support' | 'customer' | 'admin'
@@ -39,6 +42,19 @@ export interface ChatConversation {
   updated_at: string
 }
 
+/** 根据当前路由推断客服场景：摸大红页 → mohong，其它 → general */
+export function resolveSupportScene(path: string): SupportScene {
+  if (
+    path === '/mohong' ||
+    path.startsWith('/mohong/') ||
+    path === '/m/mohong' ||
+    path.startsWith('/m/mohong/')
+  ) {
+    return 'mohong'
+  }
+  return 'general'
+}
+
 export interface AdminChatCounts {
   ownership?: Record<string, number>
   stages?: Record<string, number>
@@ -97,8 +113,10 @@ export async function fetchOrderChat(orderId: number) {
   return data.data
 }
 
-export async function ensureSupportChat() {
-  const { data } = await apiClient.post<ApiResponse<ChatConversation>>('/chats/support')
+export async function ensureSupportChat(scene: SupportScene | string = 'general') {
+  const { data } = await apiClient.post<ApiResponse<ChatConversation>>('/chats/support', {
+    scene: scene || 'general',
+  })
   return data.data
 }