fix(live/shadow): 实例锁第二层——按账户复制策略适配文件(live_3/live_5共用QMT账号被误判重复实例拒启);bullet_trade实例锁判重键=主机+strategy_path+broker+account_identity,同账号多策略是合法场景须路径互异 [vps]

sanguo_trader/shadow/runner.py

@@ -121,6 +121,24 @@ def _snapshot_loop(broker: Any, db: str, account_id: int,
             logger.warning("[shadow-snapshot] 落库失败 (account=%s): %s", account_id, exc)
 
 
+def _instance_adapter(account_id: str) -> Path:
+    """按账户复制一份策略适配文件(同 runner_live._instance_adapter)。
+
+    bullet_trade 实例锁按 strategy_path+broker_type+account_identity 判重;
+    多影子账户共用 ShadowBroker(同 identity)时须路径互异才不被判重复实例。
+    """
+    if not account_id:
+        return ADAPTER_FILE
+    dst = (Path(__file__).resolve().parents[2] / "runtime"
+           / f"shadow_{account_id}" / ADAPTER_FILE.name)
+    dst.parent.mkdir(parents=True, exist_ok=True)
+    if not dst.exists() or dst.read_text(encoding="utf-8") != \
+            ADAPTER_FILE.read_text(encoding="utf-8"):
+        import shutil
+        shutil.copyfile(ADAPTER_FILE, dst)
+    return dst
+
+
 def run_shadow(provider_config: Optional[Dict[str, Any]] = None) -> None:
     """装配 LiveEngine(影子 broker)并 run(阻塞)。"""
     from bullet_trade.core.live_engine import LiveEngine  # type: ignore
@@ -153,7 +171,7 @@ def run_shadow(provider_config: Optional[Dict[str, Any]] = None) -> None:
     )
 
     engine = LiveEngine(
-        ADAPTER_FILE,
+        _instance_adapter(cfg["account_id"]),
         broker_factory=lambda: broker,
         # 独立 runtime 目录:bullet_trade 单实例锁默认 ./runtime,
         # 影子与实盘并行(双轨§8)会互抢锁,按账户分目录隔离