diff --git a/sanguo_orchestrator/portfolio_worker.py b/sanguo_orchestrator/portfolio_worker.py
index 4e10c98..7ad2914 100644
--- a/sanguo_orchestrator/portfolio_worker.py
+++ b/sanguo_orchestrator/portfolio_worker.py
@@ -160,8 +160,9 @@ def _build_argv(
             "--min-commission", str(min_commission),
             "--slippage", str(slippage),
         ]
-        # NAS container: unified provider reads NAS authoritative data layer
-        # (dbbardata + parquet). VPS keeps default provider (cwd=_VPS_WORKDIR).
+        # 统一走 unified provider(方案A权威层 dbbardata+parquet):
+        # VPS 之前默认 local(仅 parquet)——指数点位只在 dbbardata,基准曲线恒空
+        # (2026-08-13 VPS 冒烟实测);unified 在 VPS 读本地库,已验证全链路 OK。
         if cwd == "/app":
             nas_provider_config = json.dumps({
                 "db_path": "/volume1/stock/sanguo_vnpy_v2/data_backup/quant_trading.db",
@@ -171,6 +172,8 @@ def _build_argv(
         elif provider_config:
             argv += ["--provider", "unified",
                      "--provider-config", json.dumps(provider_config)]
+        else:
+            argv += ["--provider", "unified"]
         return argv, cwd
 
     # Mac: SSH to VPS (remote cmd hand-built, no shlex.quote: POSIX single