修复微信扫码区服识别

backend/internal/modules/listing/external_upload.go

@@ -382,10 +382,11 @@ func buildExternalListingTitle(rank string, insurance string, hafCoinM float64,
 
 func serverRegionFromLoginMethod(value string) string {
 	value = strings.TrimSpace(value)
+	normalized := strings.ToLower(value)
 	switch {
-	case strings.Contains(value, "微信"):
+	case strings.Contains(value, "微信"), strings.HasPrefix(normalized, "vx"), strings.HasPrefix(normalized, "wx"):
 		return "微信"
-	case strings.Contains(strings.ToLower(value), "steam"):
+	case strings.Contains(normalized, "steam"):
 		return "Steam"
 	default:
 		return "QQ"

backend/internal/modules/listing/service_test.go

@@ -566,6 +566,28 @@ func TestExternalAccountToCreateRequestMapsUploadFields(t *testing.T) {
 	}
 }
 
+func TestServerRegionFromLoginMethod(t *testing.T) {
+	tests := []struct {
+		name        string
+		loginMethod string
+		want        string
+	}{
+		{name: "QQ账号密码", loginMethod: "QQ账号密码", want: "QQ"},
+		{name: "微信扫码", loginMethod: "微信扫码", want: "微信"},
+		{name: "VX扫码", loginMethod: "VX扫码", want: "微信"},
+		{name: "小写WX扫码", loginMethod: "wx扫码", want: "微信"},
+		{name: "Steam", loginMethod: "Steam令牌", want: "Steam"},
+	}
+
+	for _, tt := range tests {
+		t.Run(tt.name, func(t *testing.T) {
+			if got := serverRegionFromLoginMethod(tt.loginMethod); got != tt.want {
+				t.Fatalf("serverRegionFromLoginMethod(%q) = %q, want %q", tt.loginMethod, got, tt.want)
+			}
+		})
+	}
+}
+
 func TestExternalAccountToCreateRequestSeparatesPureCoinAndExtraItems(t *testing.T) {
 	req := externalAccountToCreateRequest("客服1", 1772526103000, ExternalAccountData{
 		LoginMethod: "QQ账号密码",