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/integration/persistence/test_sqlite_migration_backup.py

@@ -5,6 +5,7 @@ import logging
 import os
 import pathlib
 import sqlite3
+from contextlib import closing
 
 import pytest
 import sqlalchemy as sa
@@ -34,7 +35,7 @@ def _manifest_payloads(backup_directory) -> list[dict]:
 
 def _assert_verified_backup(payload: dict) -> None:
     backup_path = pathlib.Path(payload['backup_path'])
-    with sqlite3.connect(f'{backup_path.as_uri()}?mode=ro', uri=True) as connection:
+    with closing(sqlite3.connect(f'{backup_path.as_uri()}?mode=ro', uri=True)) as connection:
         assert connection.execute('PRAGMA quick_check').fetchall() == [('ok',)]
         assert connection.execute('SELECT version_num FROM alembic_version').fetchone()[0] == payload['source_revision']