Merge branch 'main' into feature/distribution-system

合入 main 的推广追踪（adtracking）模块，并解决与分销业务的 8 处冲突。

冲突解决原则：两边的字段、菜单与路由全部保留，不删任何一方。

后端：
- model/order.go：保留分销字段注释块，追加 SourceTrackCode
- model/user.go：追加 RegisterTrackCode；TokenVersion 默认值保持 1
  （与本库 users.token_version 列默认值一致）
- auth/repository.go：两处建号结构体同时写入 RegisterTrackCode 与 TokenVersion
- order/dto.go：OrderDTO 同时暴露 distribution_site_id 与 source_track_code；
  CreateRequest 同时接受 distribution_site_code 与 track_code
- order/presenter.go：同时映射 DistributionSiteID 与 SourceTrackCode

前端：
- orders/api/orders.ts：createOrder 同时携带 distribution_site_code 与 track_code
- layouts/AdminLayout.vue：分销管理菜单组与推广追踪菜单组并列保留
- router/adminRoutes.ts：分销 4 条路由与 tracking-links 路由并列保留

迁移：feature 侧 000064-000067 已在前一提交顺延为 000065-000068，
为 main 的 000064_ad_tracking 让号，合并后编号 000063→000068 连续无重复。

frontend/src/features/admin/api/adTracking.ts

@@ -0,0 +1,110 @@
+import { apiClient } from '@/shared/api/client'
+import type { ApiResponse } from '@/shared/types/types'
+
+export interface TrackingLinkItem {
+  id: number
+  name: string
+  code: string
+  channel_type: string
+  target_url: string
+  short_url: string
+  status: 'active' | 'disabled'
+  cost_cent: number
+  notes: string
+  created_by: number
+  created_at: string
+  updated_at: string
+
+  click_pv: number
+  click_uv: number
+  click_ip: number
+  register_count: number
+  order_count: number
+  paid_order_count: number
+  paid_gmv_cent: number
+  conversion_rate: number
+}
+
+export interface TrackingOverviewStats {
+  total_links: number
+  active_links: number
+  total_pv: number
+  total_uv: number
+  total_ip: number
+  total_registers: number
+  total_orders: number
+  total_paid_orders: number
+  total_paid_gmv_cent: number
+
+  today_pv: number
+  today_uv: number
+  today_registers: number
+  today_orders: number
+  today_paid_gmv_cent: number
+}
+
+export interface ListTrackingLinksParams {
+  keyword?: string
+  channel_type?: string
+  status?: string
+  page?: number
+  page_size?: number
+}
+
+export interface CreateTrackingLinkPayload {
+  name: string
+  code: string
+  channel_type?: string
+  target_url?: string
+  cost_cent?: number
+  notes?: string
+}
+
+export interface UpdateTrackingLinkPayload {
+  name: string
+  channel_type?: string
+  target_url?: string
+  cost_cent?: number
+  notes?: string
+}
+
+export async function fetchTrackingOverview(): Promise<TrackingOverviewStats> {
+  const { data } = await apiClient.get<ApiResponse<TrackingOverviewStats>>(
+    '/admin/tracking-links/overview'
+  )
+  return data.data
+}
+
+export async function fetchTrackingLinks(
+  params: ListTrackingLinksParams
+): Promise<{ items: TrackingLinkItem[]; total: number }> {
+  const { data } = await apiClient.get<ApiResponse<{ items: TrackingLinkItem[]; total: number }>>(
+    '/admin/tracking-links',
+    { params }
+  )
+  return data.data
+}
+
+export async function createTrackingLink(
+  payload: CreateTrackingLinkPayload
+): Promise<TrackingLinkItem> {
+  const { data } = await apiClient.post<ApiResponse<TrackingLinkItem>>(
+    '/admin/tracking-links',
+    payload
+  )
+  return data.data
+}
+
+export async function updateTrackingLink(
+  id: number,
+  payload: UpdateTrackingLinkPayload
+): Promise<void> {
+  await apiClient.put(`/admin/tracking-links/${id}`, payload)
+}
+
+export async function updateTrackingLinkStatus(
+  id: number,
+  status: 'active' | 'disabled'
+): Promise<void> {
+  await apiClient.put(`/admin/tracking-links/${id}/status`, { status })
+}

frontend/src/features/admin/components/AssignPermissionsDialog.vue

@@ -112,6 +112,7 @@ const resourceLabels: Record<string, string> = {
   role: '角色管理',
   system_config: '系统配置',
   audit_log: '审计日志',
+  ad_tracking: '推广追踪',
 }
 </script>