chore(build): complete unsigned macOS packaging

backend/internal/config/config.go

@@ -4,6 +4,7 @@ import (
 	"fmt"
 	"os"
 	"path/filepath"
+	goruntime "runtime"
 	"strings"
 
 	"gopkg.in/yaml.v3"
@@ -406,7 +407,7 @@ func DefaultConfig() *Config {
 		},
 		Browser: BrowserConfig{
 			UserDataRoot:           "data",
-			DefaultFingerprintArgs: []string{"--fingerprint-brand=Chrome", "--fingerprint-platform=windows"},
+			DefaultFingerprintArgs: defaultFingerprintArgsForOS(goruntime.GOOS),
 			DefaultLaunchArgs:      []string{"--disable-sync", "--no-first-run"},
 			DefaultProxy:           "",
 			StartReadyTimeoutMs:    3000,
@@ -445,6 +446,17 @@ func DefaultConfig() *Config {
 	}
 }
 
+func defaultFingerprintArgsForOS(goos string) []string {
+	platform := "windows"
+	switch strings.ToLower(strings.TrimSpace(goos)) {
+	case "darwin":
+		platform = "mac"
+	case "linux":
+		platform = "linux"
+	}
+	return []string{"--fingerprint-brand=Chrome", "--fingerprint-platform=" + platform}
+}
+
 // Save 保存配置到文件
 func (c *Config) Save(configPath string) error {
 	data, err := yaml.Marshal(c)

backend/internal/config/config_test.go

@@ -3,6 +3,7 @@ package config
 import (
 	"os"
 	"path/filepath"
+	"runtime"
 	"testing"
 )
 
@@ -74,6 +75,42 @@ browser: {}
 	}
 }
 
+func TestDefaultFingerprintArgsForOS(t *testing.T) {
+	t.Parallel()
+
+	tests := map[string]string{
+		"windows": "--fingerprint-platform=windows",
+		"linux":   "--fingerprint-platform=linux",
+		"darwin":  "--fingerprint-platform=mac",
+		"freebsd": "--fingerprint-platform=windows",
+	}
+
+	for goos, want := range tests {
+		got := defaultFingerprintArgsForOS(goos)
+		if len(got) != 2 {
+			t.Fatalf("%s: unexpected args length: got=%v", goos, got)
+		}
+		if got[1] != want {
+			t.Fatalf("%s: platform arg mismatch: got=%q want=%q", goos, got[1], want)
+		}
+	}
+}
+
+func TestDefaultConfigUsesCurrentOSFingerprintPlatform(t *testing.T) {
+	t.Parallel()
+
+	cfg := DefaultConfig()
+	want := defaultFingerprintArgsForOS(runtime.GOOS)
+	if len(cfg.Browser.DefaultFingerprintArgs) != len(want) {
+		t.Fatalf("默认指纹参数数量不符: got=%v want=%v", cfg.Browser.DefaultFingerprintArgs, want)
+	}
+	for i := range want {
+		if cfg.Browser.DefaultFingerprintArgs[i] != want[i] {
+			t.Fatalf("默认指纹参数不符: got=%v want=%v", cfg.Browser.DefaultFingerprintArgs, want)
+		}
+	}
+}
+
 func TestLoadPreservesExplicitConfig(t *testing.T) {
 	t.Parallel()