[BUG] Sidebar items not translated in Japanese (ja-JP) - "Pinned", "Recents", "Drag to pin" remain in English

Preflight Checklist

• [x] I have searched existing issues and this hasn't been reported yet
• [x] This is a single bug report (please file separate reports for different bugs)
• [x] I am using the latest version of Claude Code

What's Wrong?

Bug description

The sidebar items "Pinned", "Recents", and "Drag to pin" are not translated into Japanese, even though the app locale is set to ja-JP.

Steps to reproduce

1. Set macOS language to Japanese
2. Open Claude desktop app
3. Observe the sidebar

Expected behavior

Sidebar items should be displayed in Japanese

Actual behavior

Sidebar items remain in English

Environment

• App version: 1.4758.0
• OS: macOS (Japanese locale: ja-JP)

What Should Happen?

Sidebar items ("Pinned", "Recents", "Drag to pin") should be displayed in Japanese when the app locale is set to ja-JP.

Error Messages/Logs

Steps to Reproduce

1. Set macOS language to Japanese (ja-JP)
2. Open Claude desktop app
3. Observe the sidebar items

Claude Model

None

Is this a regression?

No, this never worked

Last Working Version

_No response_

Claude Code Version

1.4758.0

Platform

Anthropic API

Operating System

macOS

Terminal/Shell

Terminal.app (macOS)

Additional Information

_No response_