[Feature] Add Simplified Chinese localization to PearOS Settings

[blackrion]

Description

On pearOS NiceC0re 26.8 (Arch Linux-based, KDE Plasma, Wayland), the system language and KDE locale are set to Simplified Chinese, but the PearOS Settings application is still displayed entirely in English.

Environment:

• pearOS NiceC0re 26.8
• system-settings 26.7.0-1
• Application: systemsettings1
• LANG=zh_CN.UTF-8
• LANGUAGE=zh_CN

Steps to reproduce

1. Set the system and KDE locale to Simplified Chinese (zh_CN).
2. Launch the PearOS Settings application (systemsettings1).
3. Inspect the sidebar and search box.

Actual behavior

The interface remains in English, including:

• Search
• Network
• Battery
• General
• Accessibility
• Appearance
• Menu Bar
• Pear Intelligence & Piri
• Desktop and Dock
• Displays
• Wallpaper
• Spotlight
• Notifications
• Sound

Expected behavior

The Settings application should follow the system/KDE zh_CN locale, or provide a language selector, and display Simplified Chinese translations.

Initial technical investigation

systemsettings1 is PearOS\x27s custom Qt/QML Settings application using the PearOSSettings QML module. In the upstream pearos-settings-app/qml/Main.qml, the navigation labels and search text appear to be literal English strings rather than translatable strings such as qsTr(). The source tree also does not appear to contain an application-specific Chinese translation catalog or translation resources.

This suggests that the issue is not caused by an incorrect system locale, but by missing i18n/l10n support in the PearOS Settings application.

Suggested implementation:

• Add Qt Linguist / Qt Quick translation support, for example by marking user-facing strings with qsTr();
• Add at least a zh_CN translation catalog;
• Keep English as the default fallback language;
• Install the generated translation resources in the built package and include them in CI/package builds.

Thank you for maintaining pearOS.