feat: use optimistic updates for system proxy toggle

src/components/shared/proxy-control-switches.tsx

@@ -8,11 +8,10 @@ import {
 } from '@mui/icons-material'
 import { Box, Typography, alpha, useTheme } from '@mui/material'
 import { useLockFn } from 'ahooks'
-import React, { useCallback, useRef } from 'react'
+import React, { useCallback, useRef, useState } from 'react'
 import { useTranslation } from 'react-i18next'
 
 import { DialogRef, Switch, TooltipIcon } from '@/components/base'
-import { GuardState } from '@/components/setting/mods/guard-state'
 import { SysproxyViewer } from '@/components/setting/mods/sysproxy-viewer'
 import { TunViewer } from '@/components/setting/mods/tun-viewer'
 import { useServiceInstaller } from '@/hooks/use-service-installer'
@@ -42,6 +41,7 @@ interface SwitchRowProps {
 
 /**
  * 抽取的子组件：统一的开关 UI
+ * active = 真实状态OS/配置 乐观更新
  */
 const SwitchRow = ({
   label,
@@ -55,6 +55,24 @@ const SwitchRow = ({
   highlight,
 }: SwitchRowProps) => {
   const theme = useTheme()
+  const [checked, setChecked] = useState(active)
+  const pendingRef = useRef(false)
+
+  if (pendingRef.current) {
+    if (active === checked) pendingRef.current = false
+  } else if (checked !== active) {
+    setChecked(active)
+  }
+
+  const handleChange = (_: React.ChangeEvent, value: boolean) => {
+    pendingRef.current = true
+    setChecked(value)
+    onToggle(value).catch((err: any) => {
+      pendingRef.current = false
+      onError?.(err)
+    })
+  }
+
   return (
     <Box
       sx={{
@@ -92,15 +110,12 @@ const SwitchRow = ({
         {extraIcons}
       </Box>
 
-      <GuardState
-        value={active}
-        valueProps="checked"
-        onCatch={onError}
-        onFormat={(_, v) => v}
-        onGuard={onToggle}
-      >
-        <Switch edge="end" disabled={disabled} />
-      </GuardState>
+      <Switch
+        edge="end"
+        disabled={disabled}
+        checked={checked}
+        onChange={handleChange}
+      />
     </Box>
   )
 }

src/hooks/use-system-proxy-state.ts

@@ -1,4 +1,4 @@
-import { useLockFn } from 'ahooks'
+import { useRef } from 'react'
 import useSWR, { mutate } from 'swr'
 import { closeAllConnections } from 'tauri-plugin-mihomo-api'
 
@@ -36,28 +36,31 @@ export const useSystemProxyState = () => {
     }
   })()
 
-  const toggleSystemProxy = useLockFn(async (enabled: boolean) => {
-    mutateVerge({ ...verge, enable_system_proxy: enabled }, false)
+  // "最后一次生效"模式：快速连续点击时，只执行最终状态
+  const pendingRef = useRef<boolean | null>(null)
+  const busyRef = useRef(false)
 
-    const updateProxyStatus = async () => {
-      await new Promise((resolve) => setTimeout(resolve, enabled ? 20 : 10))
-      await mutate('getSystemProxy')
-      await mutate('getAutotemProxy')
-    }
+  const toggleSystemProxy = async (enabled: boolean) => {
+    mutateVerge({ ...verge, enable_system_proxy: enabled }, false)
+    pendingRef.current = enabled
+
+    if (busyRef.current) return
+    busyRef.current = true
 
     try {
-      if (!enabled && verge?.auto_close_connection) {
-        await closeAllConnections()
+      while (pendingRef.current !== null) {
+        const target = pendingRef.current
+        pendingRef.current = null
+        if (!target && verge?.auto_close_connection) {
+          await closeAllConnections().catch(() => {})
+        }
+        await patchVerge({ enable_system_proxy: target })
       }
-      await patchVerge({ enable_system_proxy: enabled })
-      await updateProxyStatus()
-    } catch (error) {
-      console.warn('[useSystemProxyState] toggleSystemProxy failed:', error)
-      mutateVerge({ ...verge, enable_system_proxy: !enabled }, false)
-      await updateProxyStatus()
-      throw error
+    } finally {
+      busyRef.current = false
+      await Promise.all([mutate('getSystemProxy'), mutate('getAutotemProxy')])
     }
-  })
+  }
 
   return {
     indicator,