- Use Tauri native theme APIs with Linux desktop preference support
- Fall back to WebView theme detection for startup and browser preview
- Add a follow-system option to both standard and beginner modes
- Persist preferences and handle resume events and async race conditions
- Add translations and theme behavior and UI regression tests
- Use credential-file terminology in Simplified and Traditional Chinese
- Highlight the Enable button for disabled credentials without dimming actions
- Add regression tests for terminology and button styling
- Replace transient toasts with dismissible, accessible inline notices
- Remove redundant success messages for toggles and clipboard actions
- Preserve list focus during background refreshes
- Remove duplicate English captions and localize onboarding content
- Complete Japanese translations and remove English fallback
- Preserve API field names, Token units, and raw reasoning-level values
- Add regression tests for operation feedback and localization
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