diff --git a/sanguo_trader/shadow/__main__.py b/sanguo_trader/shadow/__main__.py
index 8c4a139..11d0d96 100644
--- a/sanguo_trader/shadow/__main__.py
+++ b/sanguo_trader/shadow/__main__.py
@@ -60,6 +60,15 @@ def main() -> int:
 
         run_auto_supervisor()
         return 0
+    if "--account" in sys.argv:
+        # 多账户 worker 不抢全局 solo 锁:全局锁全机只放行一个 worker,supervisor
+        # 多账户并存时其余全部"锁占用"优雅退出(VPS 2026-08-16 实录 40/41 反复
+        # rc=0,单账户时代从未暴露)。同账户防重复由 bullet_trade
+        # runtime/shadow_{aid} 实例锁兜底,supervisor children 表保证一账户一进程。
+        from .runner import run_shadow
+
+        run_shadow()
+        return 0
     lock = _acquire_lock()
     if lock is None:
         print("影子柜台已在运行(锁占用),本次启动退出。", flush=True)
diff --git a/tests/trader/test_shadow_lock_routing.py b/tests/trader/test_shadow_lock_routing.py
new file mode 100644
index 0000000..861298a
--- /dev/null
+++ b/tests/trader/test_shadow_lock_routing.py
@@ -0,0 +1,56 @@
+"""影子柜台 CLI 路由:--account worker 不抢全局 solo 锁(多账户并存的前提)。"""
+import sys
+
+import pytest
+
+
+def _run_main(monkeypatch, argv):
+    from sanguo_trader.shadow import __main__ as m
+
+    calls = {"lock": 0, "shadow": 0, "auto": 0}
+
+    def _no_lock():
+        calls["lock"] += 1
+        return object()
+
+    def _shadow(*a, **k):
+        calls["shadow"] += 1
+
+    def _auto(*a, **k):
+        calls["auto"] += 1
+
+    import sanguo_trader.shadow.runner as runner_mod
+    import sanguo_trader.shadow.supervisor as sup
+
+    monkeypatch.setattr(m, "_acquire_lock", _no_lock)
+    # main() 内 lazy import:patch 源模块而非 __main__
+    monkeypatch.setattr(runner_mod, "run_shadow", _shadow)
+    monkeypatch.setattr(sup, "run_auto_supervisor", _auto)
+    monkeypatch.setattr(sys, "argv", ["prog", *argv])
+    rc = m.main()
+    return rc, calls
+
+
+def test_account_worker_skips_global_lock(monkeypatch):
+    """--account N:多账户 worker 不碰全局锁(VPS 实录 40/41「锁占用」循环退出)。"""
+    rc, calls = _run_main(monkeypatch, ["--account", "41"])
+    assert rc == 0
+    assert calls["shadow"] == 1
+    assert calls["lock"] == 0  # 关键:不抢全局 solo 锁
+
+
+def test_solo_mode_still_locks(monkeypatch):
+    """无 --account 的 solo 模式维持全局锁(防双开)。"""
+    rc, calls = _run_main(monkeypatch, [])
+    assert rc == 0
+    assert calls["shadow"] == 1
+    assert calls["lock"] == 1
+
+
+def test_auto_mode_no_lock_no_shadow(monkeypatch):
+    """--auto 主管:既不抢锁也不起柜台。"""
+    rc, calls = _run_main(monkeypatch, ["--auto"])
+    assert rc == 0
+    assert calls["auto"] == 1
+    assert calls["lock"] == 0
+    assert calls["shadow"] == 0