modify: 网关拆为独立包 chongming-gateway（源码迁出到 utils/gateway，打包只留 plugins.mbank）

test/test_stream_e2e_zenoh.py

@@ -26,7 +26,7 @@ import zenoh
 
 REPO_ROOT = Path(__file__).resolve().parent.parent
 sys.path.insert(0, str(REPO_ROOT / "utils" / "worker" / "src"))
-sys.path.insert(0, str(REPO_ROOT / "src"))
+sys.path.insert(0, str(REPO_ROOT / "gateway" / "src"))
 
 # ---- 网关依赖隔离（同 test_stream_gateway）：桩掉 chongming 包链与 chongming_cache ----
 _pkg = types.ModuleType("chongming")
@@ -43,7 +43,7 @@ _cache_stub.DistributedLock = object  # worker_manager 顶层导入（本测试
 for mod in (_pkg, _app, _core, _logger_stub, _cache_stub):
     sys.modules[mod.__name__] = mod
 
-_wm_path = REPO_ROOT / "src" / "chongming" / "app" / "core" / "worker_manager.py"
+_wm_path = REPO_ROOT / "gateway" / "src" / "chongming" / "app" / "core" / "worker_manager.py"
 _spec = importlib.util.spec_from_file_location(
     "chongming.app.core.worker_manager", _wm_path
 )