refactor: 拆分 proxy.go 为平台特定文件，兼容 macOS 和 Linux\n\n- proxy.go: 保留通用类型和辅助函数\n- proxy_windows.go: 通过注册表读取 Windows 系统代理\n- proxy_darwin.go: 通过 scutil --proxy 读取 macOS 系统代理\n- proxy_linux.go: 通过 gsettings/kreadconfig 读取 Linux 系统代理"

internal/proxy_darwin.go

@@ -0,0 +1,82 @@
+//go:build darwin
+
+package internal
+
+import (
+	"fmt"
+	"os/exec"
+	"strings"
+)
+
+// readSystemProxy 从 macOS 系统偏好设置读取代理配置
+// 使用 scutil --proxy 命令获取系统代理信息
+func readSystemProxy(info *ProxyInfo) error {
+	out, err := exec.Command("scutil", "--proxy").Output()
+	if err != nil {
+		return fmt.Errorf("执行 scutil --proxy 失败: %w", err)
+	}
+
+	lines := strings.Split(string(out), "\n")
+	settings := make(map[string]string)
+	for _, line := range lines {
+		line = strings.TrimSpace(line)
+		parts := strings.SplitN(line, " : ", 2)
+		if len(parts) == 2 {
+			settings[strings.TrimSpace(parts[0])] = strings.TrimSpace(parts[1])
+		}
+	}
+
+	// 检查 HTTP 代理
+	if settings["HTTPEnable"] == "1" {
+		host := settings["HTTPProxy"]
+		port := settings["HTTPPort"]
+		if host != "" {
+			info.Enabled = true
+			info.Server = host
+			if port != "" && port != "0" {
+				info.Server = host + ":" + port
+			}
+			info.Protocol = "http"
+		}
+	}
+
+	// 检查 HTTPS 代理
+	if !info.Enabled && settings["HTTPSEnable"] == "1" {
+		host := settings["HTTPSProxy"]
+		port := settings["HTTPSPort"]
+		if host != "" {
+			info.Enabled = true
+			info.Server = host
+			if port != "" && port != "0" {
+				info.Server = host + ":" + port
+			}
+			info.Protocol = "http"
+		}
+	}
+
+	// 检查 SOCKS 代理
+	if !info.Enabled && settings["SOCKSEnable"] == "1" {
+		host := settings["SOCKSProxy"]
+		port := settings["SOCKSPort"]
+		if host != "" {
+			info.Enabled = true
+			info.Server = host
+			if port != "" && port != "0" {
+				info.Server = host + ":" + port
+			}
+			info.Protocol = "socks5"
+		}
+	}
+
+	// 如果通过以上方式检测到了代理，根据端口再次猜测协议
+	if info.Enabled && info.Server != "" {
+		info.Protocol = guessProtocol(info.Server)
+	}
+
+	// 读取绕过列表
+	if exceptions, ok := settings["ExceptionsList"]; ok {
+		info.Bypass = exceptions
+	}
+
+	return nil
+}