perf(cost-center): 优化总览刷新查询与加载占位

apps/backend/src/services/cost-center/cost-center-overview-service.ts

@@ -89,12 +89,11 @@ export async function getAdminCostCenterOverview(params: { scope?: string } = {}
         (
           SELECT COUNT(*)::int
           FROM cost_exceptions ce
+          JOIN order_items oi ON oi.id = ce.order_item_id
           WHERE ce.status = 'open'
             AND (
               $1::text IS NULL
-              OR ce.order_item_id IN (
-                SELECT oi.id FROM order_items oi WHERE COALESCE(oi.fulfillment_channel, CASE WHEN oi.fulfillment_status = 'archived' THEN 'archived' ELSE 'pending' END) = $1
-              )
+              OR COALESCE(oi.fulfillment_channel, CASE WHEN oi.fulfillment_status = 'archived' THEN 'archived' ELSE 'pending' END) = $1
             )
         ) AS open_exception_count,
         (

apps/backend/src/services/cost-center/cost-center.test.ts

@@ -298,6 +298,16 @@ test('人工客服筛选排除已有其他主渠道的旧 man 商品', () => {
   assert.ok(sql.includes('BTRIM(live_channel.internal_sku) = BTRIM(p.canonical_name)'))
 })
 
+test('成本中心总览异常统计必须走异常表关联，不能全表扫描订单项子查询', async () => {
+  const { readFile } = await import('node:fs/promises')
+  const source = await readFile(
+    new URL('./cost-center-overview-service.ts', import.meta.url),
+    'utf8',
+  )
+  assert.ok(source.includes('JOIN order_items oi ON oi.id = ce.order_item_id'))
+  assert.ok(!source.includes('ce.order_item_id IN ('))
+})
+
 test('tpv: 商品来源归为第三方卡券', async () => {
   const { productSourceOf } = await import('./cost-center-mappers.js')
   const assert = (await import('node:assert/strict')).default