diff --git a/bioflow_service/app/context.py b/bioflow_service/app/context.py
index acef6fd..cb880a8 100644
--- a/bioflow_service/app/context.py
+++ b/bioflow_service/app/context.py
@@ -168,7 +168,7 @@ async def init_context(db_path: str | None = None) -> Context:
         from .services.bioflow.extension_exec import ExtensionExecConfig, ExtensionExecutor as RealExecutor
         cfg = ExtensionExecConfig()
         real = RealExecutor(cfg)
-        store = ext_mod.active_store()
+        store = ext_mod.get_store()
         if store is not None:
             ext_mod.inject_real_executor(real, store)
             logger.info("extension executor wired (image suffix=%s)", cfg.docker_tag_suffix)
diff --git a/bioflow_service/app/services/bioflow/extensions.py b/bioflow_service/app/services/bioflow/extensions.py
index 52fa937..9918318 100644
--- a/bioflow_service/app/services/bioflow/extensions.py
+++ b/bioflow_service/app/services/bioflow/extensions.py
@@ -525,8 +525,10 @@ class ExtensionStore:
         ))
 
         executor = self.executor or ExtensionExecutor()
-        if isinstance(executor, ExtensionExecutor) and type(executor) is ExtensionExecutor:
-            # 占位执行器（Dev-B 未接入）：明确 503 语义，绝不伪装成 trial_failed 触发修复循环
+        if isinstance(executor, ExtensionExecutor) and executor._real is None:
+            # 占位执行器（未注入真实执行器）：明确 503 语义，
+            # 绝不伪装成 trial_failed 触发修复循环。
+            # 注意:TL 接线后的适配器也是 ExtensionExecutor 实例,但 _real 已注入。
             raise ExtensionRunError(
                 "扩展执行器未接入（extension_exec.py 由 Dev-B 实现；"
                 "接口签名见 extensions.ExtensionExecutor）"