[Bug] Localization issue: mixed Chinese and English UI

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Localization issue: mixed Chinese and English UI

When running the current release on a macOS system set to Simplified Chinese, some parts of the UI are translated but other parts still appear in English.

What seems to be happening

This does not look like a missing zh-Hans.lproj issue. The app already ships with Chinese localization, but some UI strings are not fully wired into the localization system.

Root causes found

• Some SwiftUI views still use hardcoded English strings directly.
• Some user-facing strings are missing from en.lproj/Localizable.strings.
• Some localization keys do not exactly match the strings used in code.
• Some reusable components render plain String values instead of localized keys.
• Some dynamic labels use inline interpolation instead of stable format-string keys.

Examples

• Your Mac is clean vs Your Mac is clean!
• freed vs freed up
• Empty-state text like No Orphaned Files or No leftover files from uninstalled apps were found.
• Sidebar / toolbar labels such as Home, Applications, Installed Apps, Orphaned Files

Suggested fix

• Move all user-facing UI text into en.lproj/Localizable.strings
• Make SwiftUI views consistently use localized keys
• Replace interpolated UI text with format-string keys
• Audit shared components to ensure they preserve localization
• Add a localization consistency check before release

This should prevent mixed-language UI in future releases.