Changed
- 🌍 i18n for tool servers, browser, and web settings. Replaced all remaining hardcoded English strings in the Tool Servers, Web/Browser, and admin panels with translation keys. Added ~60 new keys per locale across all 10 languages (de, en, es, fr, ja, ko, pt-BR, ru, zh-CN, zh-TW).
- 🎨 General settings layout refactor. Reorganised the General settings panel into a scrollable layout with grouped sections (Notifications, Updates, Message Queue). Webhook URL input is now full-width with a hint instead of an inline save button. The save button now shows a loading/saving state.
- 🖱️ Scrollbar-on-hover utility. Added a
.scrollbar-hoverCSS class that hides scrollbar thumbs until the user hovers, reducing visual clutter in scrollable panels.