diff --git a/scripts/nas_sync/sync_valuation_daily.sh b/scripts/nas_sync/sync_valuation_daily.sh
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+++ b/scripts/nas_sync/sync_valuation_daily.sh
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+#!/bin/bash
+# NAS 端：每日同步 VPS valuation + financial_abstract（ak-eod 每日 --force 全量重写这俩）。
+#
+# 设计（2026-07-31 实测）：
+# - ak-eod 19:00 用 --force 每日全量重写 valuation/financial_abstract（估值随股价每日变）
+# - bsdtar --newer 按 mtime 增量不可行（VPS 慢盘 stat 11070 文件 >60s）
+# - python tarfile 全打包只 read 内容不 stat，实测 9.5s/1.1GB → scp 单 tar → 解包
+#
+# 调度：ak-eod 19:00 跑完（~21:30）后延迟跑（22:00 或挂 id=2 次日 3:00）。
+# per-date 类（dragon_tiger 等）走 sync_parquet_daily.sh；weekly per-stock（northbound 等）走 sync_parquet.sh 周日全量。
+set -u
+
+KEY=/var/services/homes/admin/.ssh/id_ed25519_nas
+VPS=Administrator@49.232.102.198
+ROOT=/volume1/stock/sanguo_vnpy_v2
+DATA=$ROOT/data
+STAGE=$ROOT/data_backup/_staging
+LOG=$ROOT/data_backup/valuation_daily.log
+
+VPS_TAR='C:\sanguo_vnpy_v2\data\_sync_val.tar'
+VPS_TAR_SCP='C:/sanguo_vnpy_v2/data/_sync_val.tar'
+
+TS=$(date '+%F %T')
+mkdir -p "$STAGE"
+echo "=== $TS valuation+financial_abstract daily ===" >> "$LOG"
+
+# VPS: python tarfile 打包（绕 bsdtar 命令解析/慢盘 stat 坑）
+ssh -i "$KEY" -o StrictHostKeyChecking=no "$VPS" "C:\Python310\python.exe -X utf8 -" <<'PY' >> "$LOG" 2>&1
+import tarfile, os
+base = r'C:\sanguo_vnpy_v2\data'
+out = base + r'\_sync_val.tar'
+with tarfile.open(out, 'w') as t:
+    for d in ['valuation', 'financial_abstract']:
+        t.add(os.path.join(base, 'static', d), arcname='static/' + d)
+print(f'PACK size={os.path.getsize(out)/1024/1024:.1f}MB')
+PY
+
+# scp tar 到 NAS + 解包
+if scp -i "$KEY" -o StrictHostKeyChecking=no "$VPS:$VPS_TAR_SCP" "$STAGE/_sync_val.tar" >> "$LOG" 2>&1; then
+  tar -xf "$STAGE/_sync_val.tar" -C "$DATA" >> "$LOG" 2>&1
+  echo "[$(date '+%T')] valuation daily DONE" >> "$LOG"
+else
+  echo "[$(date '+%T')] valuation daily FAIL (scp)" >> "$LOG"
+fi
+
+# 清理（NAS 本地 tar + VPS 临时 tar）
+rm -f "$STAGE/_sync_val.tar"
+ssh -i "$KEY" -o StrictHostKeyChecking=no "$VPS" "del \"$VPS_TAR\"" >> "$LOG" 2>&1