[i18n] Settings sidebar menu not localized in Simplified Chinese

Description

In Codex Desktop, after setting the UI language to Simplified Chinese (简体中文), the left sidebar navigation menu in Settings still displays all items in English. This is inconsistent with other parts of the UI that are already translated.

Expected behavior

When the language is set to 简体中文, all UI strings including sidebar menu labels should display in Chinese.

Actual behavior

The following settings menu items remain in English despite the language being set to 简体中文:

• General, Profile, Appearance, Configuration, Personalization, Pets, Keyboard shortcuts, Account
• Computer use, Plugins, Browser, Hooks, Git, Environments, Worktrees, Archived chats

Meanwhile, other parts of the UI (e.g., top menu bar with 编辑/Help) show partial Chinese localization.

Steps to reproduce

1. Open Codex Desktop
2. Go to Settings
3. Set Language to 简体中文
4. Observe that the left sidebar navigation remains in English

Environment

• App: Codex Desktop
• OS: Windows
• System language: Simplified Chinese

Start by locating the Codex Desktop Settings sidebar menu labels and the Simplified Chinese localization resources. Reproduce the issue with the language set to 简体中文, then ensure all listed sidebar items use Chinese translations and verify the complete Settings sidebar in the Windows desktop app.