refactor(db): 修复异步连接池无界增长，并完成 SQLAlchemy 2.0 迁移与分层归位 (#6320)

tests/test_subscribe_chain.py

@@ -333,7 +333,7 @@ def _load_subscribe_chain_class():
 
     db_model_module.Subscribe = _SubscribeModel
 
-    subscribe_oper_module = ensure_module("app.db.subscribe_oper", types.ModuleType("app.db.subscribe_oper"))
+    subscribe_oper_module = ensure_module("app.db.oper.subscribe", types.ModuleType("app.db.oper.subscribe"))
 
     class _SubscribeOper:
         def update(self, *args, **kwargs):
@@ -354,9 +354,9 @@ def _load_subscribe_chain_class():
     subscribe_oper_module.SubscribeOper = _SubscribeOper
 
     simple_oper_modules = {
-        "app.db.downloadhistory_oper": "DownloadHistoryOper",
-        "app.db.site_oper": "SiteOper",
-        "app.db.systemconfig_oper": "SystemConfigOper",
+        "app.db.oper.downloadhistory": "DownloadHistoryOper",
+        "app.db.oper.site": "SiteOper",
+        "app.db.oper.systemconfig": "SystemConfigOper",
     }
     for module_name_key, class_name in simple_oper_modules.items():
         module = ensure_module(module_name_key, types.ModuleType(module_name_key))
@@ -3325,12 +3325,13 @@ class SubscribeProgressConsolidationTest(TestCase):
         chain = SubscribeChain()
         chain.obtain_images = lambda **_kwargs: None
 
-        class _SubscribeOper:
-            def add(self, **kwargs):
-                added.append(kwargs)
-                return 41, None
+        # 落库入口已迁到 app/application/subscribe.py，链路层的接缝是 add_subscribe；
+        # 截在这里拿到的就是链路交给写入路径的原始字段，正是本用例要断言的总集数
+        def _add_subscribe(**kwargs):
+            added.append(kwargs)
+            return 41, None
 
-        with patch.object(module, "SubscribeOper", return_value=_SubscribeOper()), patch.object(
+        with patch.object(module, "add_subscribe", _add_subscribe), patch.object(
             module,
             "eventmanager",
             eventmanager,