chore(logging): 降噪 PDD 同步与发单消费者常态日志

将无新单/全跳过的处理完成日志降到 debug，并压缩 decisions 详情，避免 app 日志被按日切碎。

Co-authored-by: Cursor <cursoragent@cursor.com>

apps/backend/src/services/platforms/pdd/pdd-sync-service.ts

@@ -25,7 +25,7 @@ import {
 import { findExistingPlatformOrderIds } from '../../../repositories/order-repo.js'
 import { notifyPddCookieExpired } from '../../notification/domain-notifications.js'
 import { upsertOrderFromSource } from '../../order/order-service.js'
-import { logError, logInfo, logWarn } from '../../../utils/logger.js'
+import { logDebug, logError, logInfo, logWarn } from '../../../utils/logger.js'
 
 export interface SyncStoreOrdersOptions {
   pageNumber?: number | undefined
@@ -44,6 +44,8 @@ export interface SyncStoreResult {
   total: number
   fetchedCount: number
   upsertedCount: number
+  /** 本轮判定为库内未见过的新单数量（用于日志降噪，不等于 upsert 次数）。 */
+  newOrderCount: number
   ignoredCount: number
   failedCount: number
   pagesFetched: number
@@ -108,6 +110,7 @@ export async function syncStoreOrders(
       total: 0,
       fetchedCount: 0,
       upsertedCount: 0,
+      newOrderCount: 0,
       ignoredCount: 0,
       failedCount: 0,
       pagesFetched: 0,
@@ -136,6 +139,7 @@ export async function syncStoreOrders(
   let totalReported = 0
   let totalFetched = 0
   let totalUpserted = 0
+  let totalNewOrders = 0
   let totalIgnored = 0
   let totalFailed = 0
 
@@ -179,6 +183,7 @@ export async function syncStoreOrders(
 
       const existingCountOnPage = existingOrderSns.size
       const newCountOnPage = pageOrderSns.length - existingCountOnPage
+      totalNewOrders += Math.max(0, newCountOnPage)
 
       const doUpsert = options.upsertFn || upsertOrderFromSource
 
@@ -205,7 +210,9 @@ export async function syncStoreOrders(
         }
       }
 
-      logInfo(
+      // 本页无新单时降到 debug，避免每 20s 一轮把日志打满。
+      const pageLog = newCountOnPage > 0 || totalFailed > 0 ? logInfo : logDebug
+      pageLog(
         '[pdd-sync]',
         `店铺 ${shopName} 第 ${currentPage} 页处理完成 (本页拉取: ${items.length}, 新单: ${newCountOnPage}, 库中已有: ${existingCountOnPage})`,
         {
@@ -269,12 +276,15 @@ export async function syncStoreOrders(
       totalOrders: totalReported,
     }).catch(() => null)
 
-    logInfo('[pdd-sync]', `店铺 ${shopName} 同步完成 (共拉取 ${pagesFetched} 页)`, {
+    // 仅「真正新单 / 失败 / 多页回填」打 info；常态触达旧单后停页的空跑降到 debug。
+    const storeDoneLog = totalNewOrders > 0 || totalFailed > 0 || pagesFetched > 1 ? logInfo : logDebug
+    storeDoneLog('[pdd-sync]', `店铺 ${shopName} 同步完成 (共拉取 ${pagesFetched} 页)`, {
       shopId,
       total: totalReported,
       pagesFetched,
       fetchedCount: totalFetched,
       upsertedCount: totalUpserted,
+      newOrderCount: totalNewOrders,
       ignoredCount: totalIgnored,
       failedCount: totalFailed,
     })
@@ -285,6 +295,7 @@ export async function syncStoreOrders(
       total: totalReported,
       fetchedCount: totalFetched,
       upsertedCount: totalUpserted,
+      newOrderCount: totalNewOrders,
       ignoredCount: totalIgnored,
       failedCount: totalFailed,
       pagesFetched,
@@ -319,6 +330,7 @@ export async function syncStoreOrders(
       total: totalReported,
       fetchedCount: totalFetched,
       upsertedCount: totalUpserted,
+      newOrderCount: totalNewOrders,
       ignoredCount: totalIgnored,
       failedCount: totalFailed,
       pagesFetched,