feat(provider): support Codex subscriptions with ChatGPT sign-in (#2513)

* feat(provider): support Codex subscriptions with ChatGPT sign-in

* style: format Codex live integration test

* fix(provider): preserve Codex identity in temporary model tests

* fix(web): portal provider selector without dialog overflow

* fix(web): allow native scrolling in provider dropdown

* fix(provider): surface safe Codex quota and upstream errors

* fix(web): provide reliable Codex copy feedback in dialogs

* feat(provider): confirm cascade deletion from edit dialog

* fix(persistence): discard connections after failed commit

* fix(web): polish provider loading and confirmation motion

---------

Co-authored-by: dadachann <185672915+dadachann@users.noreply.github.com>

tests/unit_tests/api/http/service/test_tenant_resource_isolation.py

@@ -20,6 +20,7 @@ from langbot.pkg.entity.persistence.model import LLMModel, ModelProvider
 from langbot.pkg.entity.persistence.pipeline import LegacyPipeline
 from langbot.pkg.entity.persistence.workspace import Workspace
 from langbot.pkg.workspace.errors import WorkspaceNotFoundError
+from langbot.pkg.persistence.mgr import PersistenceManager
 
 
 pytestmark = pytest.mark.asyncio
@@ -28,15 +29,10 @@ WORKSPACE_A = '00000000-0000-0000-0000-00000000000a'
 WORKSPACE_B = '00000000-0000-0000-0000-00000000000b'
 
 
-class _PersistenceManager:
+class _PersistenceManager(PersistenceManager):
     def __init__(self, engine):
-        self.engine = engine
-
-    async def execute_async(self, *args, **kwargs):
-        async with self.engine.connect() as connection:
-            result = await connection.execute(*args, **kwargs)
-            await connection.commit()
-            return result
+        super().__init__(SimpleNamespace())
+        self.db = SimpleNamespace(get_engine=lambda: engine)
 
     @staticmethod
     def serialize_model(model, data, masked_columns=None):