feat(admin): 新增后台财务看板与财务明细

frontend/src/app/AppRouter.tsx

@@ -93,6 +93,11 @@ const AdminDisputesPage = lazy(() =>
     default: module.AdminDisputesPage,
   }))
 )
+const AdminFinancePage = lazy(() =>
+  import('@/features/admin/AdminFinancePage').then(module => ({
+    default: module.AdminFinancePage,
+  }))
+)
 const AdminLayout = lazy(() =>
   import('@/layouts/AdminLayout').then(module => ({ default: module.AdminLayout }))
 )
@@ -101,7 +106,6 @@ const AdminSectionPlaceholder = lazy(() =>
 )
 
 const adminSections: Array<{ path: string; title: string; description: string }> = [
-  { path: 'finance', title: '财务看板', description: '查看收入、退款、结算与资金趋势。' },
   { path: 'distribution/sites', title: '分销站点', description: '管理分站、规则、结算与站点钱包。' },
   { path: 'announcements', title: '公告管理', description: '维护主站与分站公告。' },
   { path: 'system-configs', title: '系统配置', description: '维护首页、发布、订单与支付配置。' },
@@ -144,6 +148,7 @@ export function AppRouter() {
             <Route path="users" element={<AdminUsersPage />} />
             <Route path="withdrawals" element={<AdminWithdrawalsPage />} />
             <Route path="disputes" element={<AdminDisputesPage />} />
+            <Route path="finance" element={<AdminFinancePage />} />
             {adminSections.map(section => (
               <Route
                 key={section.path}