feat(主题): 添加settingTheme字段以增强主题切换功能

在ThemeProvider中添加settingTheme字段，用于在Sidebar组件中显示当前主题状态。这样用户可以更直观地了解当前主题设置

src/renderer/src/components/app/Sidebar.tsx

@@ -35,7 +35,7 @@ const Sidebar: FC = () => {
   const { t } = useTranslation()
   const navigate = useNavigate()
   const { sidebarIcons } = useSettings()
-  const { theme, toggleTheme } = useTheme()
+  const { theme, settingTheme, toggleTheme } = useTheme()
   const { pinned } = useMinapps()
 
   const onEditUser = () => UserPopup.show()
@@ -87,7 +87,10 @@ const Sidebar: FC = () => {
             <QuestionCircleOutlined />
           </Icon>
         </Tooltip>
-        <Tooltip title={t('settings.theme.title')} mouseEnterDelay={0.8} placement="right">
+        <Tooltip
+          title={t('settings.theme.title') + ': ' + t(`settings.theme.${settingTheme}`)}
+          mouseEnterDelay={0.8}
+          placement="right">
           <Icon theme={theme} onClick={() => toggleTheme()}>
             {theme === 'dark' ? (
               <i className="iconfont icon-theme icon-dark1" />

src/renderer/src/context/ThemeProvider.tsx

@@ -5,11 +5,13 @@ import React, { createContext, PropsWithChildren, useContext, useEffect, useStat
 
 interface ThemeContextType {
   theme: ThemeMode
+  settingTheme: ThemeMode
   toggleTheme: () => void
 }
 
 const ThemeContext = createContext<ThemeContextType>({
   theme: ThemeMode.light,
+  settingTheme: ThemeMode.light,
   toggleTheme: () => {}
 })
 
@@ -55,7 +57,11 @@ export const ThemeProvider: React.FC<ThemeProviderProps> = ({ children, defaultT
     }
   })
 
-  return <ThemeContext.Provider value={{ theme: _theme, toggleTheme }}>{children}</ThemeContext.Provider>
+  return (
+    <ThemeContext.Provider value={{ theme: _theme, settingTheme: theme, toggleTheme }}>
+      {children}
+    </ThemeContext.Provider>
+  )
 }
 
 export const useTheme = () => useContext(ThemeContext)