feat(i18n): integrate internationalization into sidebar, title bar, and settings components

- Added useI18n hook to Sidebar and TitleBar components for translation support.
- Updated sidebar navigation items to use translation keys instead of hardcoded labels.
- Enhanced TitleBar buttons with localized titles for minimize, maximize, and close actions.
- Expanded i18n constants to include new namespaces for sidebar and login.
- Implemented translation messages for sidebar, settings, and login components in English, Chinese, and Japanese.
- Refactored Knowledge and Skills pages to utilize useLocale for locale management.
- Updated Login page to display localized text for form labels, placeholders, and error messages.
- Enhanced Account and General settings panels with localized titles and descriptions.
- Modified SettingMenu to use translation keys for menu items.

src/pages/Knowledge/copy.ts

@@ -1,5 +1,4 @@
-import { useEffect, useState } from 'react';
-import { getLocale, i18n } from '../../i18n';
+import { useLocale } from '../../i18n';
 import type { LanguageCode } from '../../types/runtime';
 
 type Primitive = string | number;
@@ -216,9 +215,7 @@ function createKnowledgeTranslate(locale: LanguageCode): KnowledgeTranslate {
 }
 
 export function useKnowledgeCopy(): KnowledgeTranslate {
-  const [locale, setLocale] = useState<LanguageCode>(getLocale());
-
-  useEffect(() => i18n.subscribe(setLocale), []);
+  const locale = useLocale();
 
   return createKnowledgeTranslate(locale);
 }