diff --git a/furniture-3d-system/prisma/migrations/20261008100000_add_product_archive_replacement_rule/migration.sql b/furniture-3d-system/prisma/migrations/20261008100000_add_product_archive_replacement_rule/migration.sql
new file mode 100644
index 00000000..a1460bf5
--- /dev/null
+++ b/furniture-3d-system/prisma/migrations/20261008100000_add_product_archive_replacement_rule/migration.sql
@@ -0,0 +1,25 @@
+-- 简尚「替换款管理」换货规则表（商品SABC打标「同款商品编码」依赖）。
+-- 历史遗留：该表一直没进 migrations（本地用 db push 建过），正式环境用 migrate deploy 时缺失，
+-- 导致同款商品编码全部为空。这里补上建表语句，生产/本地都可重复执行。
+CREATE TABLE IF NOT EXISTS "SupplyChainProductArchiveReplacementRule" (
+  "id"              TEXT NOT NULL,
+  "sourceId"        INTEGER NOT NULL,
+  "sku"             TEXT NOT NULL,
+  "replaceSku"      TEXT NOT NULL DEFAULT '',
+  "replaceType"     INTEGER NOT NULL DEFAULT 0,
+  "isSwapping"      INTEGER NOT NULL DEFAULT 0,
+  "differentPoints" TEXT NOT NULL DEFAULT '',
+  "creator"         TEXT NOT NULL DEFAULT '',
+  "sourceCreatedAt" TIMESTAMP(6),
+  "syncedAt"        TIMESTAMP(6) NOT NULL DEFAULT CURRENT_TIMESTAMP,
+  CONSTRAINT "SupplyChainProductArchiveReplacementRule_pkey" PRIMARY KEY ("id")
+);
+
+CREATE UNIQUE INDEX IF NOT EXISTS "SupplyChainProductArchiveReplacementRule_sourceId_key"
+  ON "SupplyChainProductArchiveReplacementRule" ("sourceId");
+
+CREATE INDEX IF NOT EXISTS "SupplyChainProductArchiveReplacementRule_sku_idx"
+  ON "SupplyChainProductArchiveReplacementRule" ("sku");
+
+CREATE INDEX IF NOT EXISTS "SupplyChainProductArchiveReplacementRule_replaceSku_idx"
+  ON "SupplyChainProductArchiveReplacementRule" ("replaceSku");
diff --git a/furniture-3d-system/prisma/schema.prisma b/furniture-3d-system/prisma/schema.prisma
index 6dfe0264..4ed3838d 100644
--- a/furniture-3d-system/prisma/schema.prisma
+++ b/furniture-3d-system/prisma/schema.prisma
@@ -1095,6 +1095,24 @@ model SupplyChainProductArchiveDepartmentSnapshot {
   @@index([generatedAt])
 }
 
+/// 简尚「替换款管理」换货规则：sku = 原编码（老），replaceSku = 替换编码（新）。
+/// 商品SABC打标的「同款商品编码（业绩&费比合并计算）」与业绩合并都依赖这张表。
+model SupplyChainProductArchiveReplacementRule {
+  id              String    @id
+  sourceId        Int       @unique
+  sku             String
+  replaceSku      String    @default("")
+  replaceType     Int       @default(0)
+  isSwapping      Int       @default(0)
+  differentPoints String    @default("")
+  creator         String    @default("")
+  sourceCreatedAt DateTime? @db.Timestamp(6)
+  syncedAt        DateTime  @default(now()) @db.Timestamp(6)
+
+  @@index([sku])
+  @@index([replaceSku])
+}
+
 model SupplyChainProductArchiveSource {
   id              String                    @id @default(cuid())
   archiveId       String
diff --git a/furniture-3d-system/scripts/install-product-replacement-rule-sync-timer.sh b/furniture-3d-system/scripts/install-product-replacement-rule-sync-timer.sh
new file mode 100644
index 00000000..8dd549c9
--- /dev/null
+++ b/furniture-3d-system/scripts/install-product-replacement-rule-sync-timer.sh
@@ -0,0 +1,71 @@
+#!/usr/bin/env bash
+set -euo pipefail
+
+# Installs the daily sync timer for the JST replacement rules table
+# (rpt.pm_replacementManage -> SupplyChainProductArchiveReplacementRule).
+# The SABC same-product-code merge depends on this table being fresh,
+# so the default schedule runs before the 09:00 SABC tag reconciliation.
+
+BASE="${FURNITURE_PROD_BASE:-/opt/furniture-3d-system-prod}"
+SERVICE_NAME="${PRODUCT_REPLACEMENT_RULE_SYNC_SERVICE_NAME:-furniture-product-replacement-rule-sync}"
+APP_ROOT="$BASE/current/furniture-3d-system"
+SHARED="$BASE/shared"
+APP_ENV="$SHARED/.env"
+SERVICE_FILE="/etc/systemd/system/$SERVICE_NAME.service"
+TIMER_FILE="/etc/systemd/system/$SERVICE_NAME.timer"
+SCHEDULE="${PRODUCT_REPLACEMENT_RULE_SYNC_SCHEDULE:-*-*-* 07:40:00 Asia/Shanghai}"
+RANDOMIZED_DELAY_SEC="${PRODUCT_REPLACEMENT_RULE_SYNC_RANDOMIZED_DELAY_SEC:-5min}"
+
+if [ "$(id -u)" -ne 0 ]; then
+  echo "This installer must run as root." >&2
+  exit 1
+fi
+
+if [ ! -d "$APP_ROOT" ]; then
+  echo "Missing app root: $APP_ROOT" >&2
+  exit 1
+fi
+
+if [ ! -f "$APP_ENV" ]; then
+  echo "Missing app env: $APP_ENV" >&2
+  exit 1
+fi
+
+if command -v systemd-analyze >/dev/null 2>&1; then
+  systemd-analyze calendar "$SCHEDULE" >/dev/null
+fi
+
+cat >"$SERVICE_FILE" <<EOF
+[Unit]
+Description=Sync JST replacement rules into SupplyChainProductArchiveReplacementRule
+After=network-online.target
+Wants=network-online.target
+
+[Service]
+Type=oneshot
+WorkingDirectory=$APP_ROOT
+Environment=NODE_ENV=production
+EnvironmentFile=$APP_ENV
+ExecStart=/bin/bash -lc 'set -euo pipefail; cd "$APP_ROOT"; ./node_modules/.bin/tsx scripts/sync-product-replacement-rules.ts --apply --confirm=sync-product-replacement-rules'
+TimeoutStartSec=1h
+StandardOutput=journal
+StandardError=journal
+EOF
+
+cat >"$TIMER_FILE" <<EOF
+[Unit]
+Description=Sync JST replacement rules once a day
+
+[Timer]
+OnCalendar=$SCHEDULE
+Persistent=true
+RandomizedDelaySec=$RANDOMIZED_DELAY_SEC
+Unit=$SERVICE_NAME.service
+
+[Install]
+WantedBy=timers.target
+EOF
+
+systemctl daemon-reload
+systemctl enable --now "$SERVICE_NAME.timer"
+systemctl list-timers --all "$SERVICE_NAME.timer" --no-pager