[Feature Request] Localize configuration sidebar and Windows tray menu (Simplified Chinese)

[Tomclanc]

Request

Please make the configuration sidebar and Windows tray menu follow the selected Sunshine locale, including Simplified Chinese (zh).

Observed in v2026.906.222525

With locale set to zh, the configuration page is partly translated (search box, Save button and many settings), but its sidebar still shows English titles: General, Input, Audio/Video, Network, Config Files, Advanced and the encoder categories.

The bundled configuration page defines these tab names as literal English strings. The Windows tray labels in src/system_tray.cpp are also literal English strings, with a comment noting they currently use the project's English source strings. Examples include Open Sunshine, Donate, Restart, Quit, and Virtual HID Driver license actions/status text.

Suggested approach

• Route sidebar titles through the existing Web UI translation system rather than hardcoding a single language.
• Make tray labels and dynamic status/action text use the selected locale, with an English fallback for missing translations.
• Keep vendor/product names such as NVIDIA NVENC and Intel QuickSync, but translate the surrounding category text.
• Suggested zh titles: 常规, 输入, 音频／视频, 网络, 配置文件, 高级, 软件编码器; tray actions: 打开 Sunshine, 捐赠, 重启, 退出.

I locally replaced the 13 sidebar labels for personal use and verified the saved resource; I did not rebuild or translate the native tray binary. My notes are at https://github.com/Tomclanc/Sunshine-Personal-Patches and explicitly recommend upstream for other users. A proper upstream locale-aware implementation would be preferable to maintaining this local patch.

I searched existing issues for sidebar/localization/tray translation and did not find a matching request. Thank you for maintaining Sunshine.

[ReenigneArcher]

Thanks for pushing this issue. Will be fixed by LizardByte/Sunshine#5688

Localization will need to occur on Crowdin, after the PR is merged.