fix(dashboard): correct overview data and states

backend/api/internal/logic/platform/dashboard/dashboard_test.go

@@ -1,8 +1,11 @@
 package dashboard
 
 import (
+	"regexp"
 	"testing"
 	"time"
+
+	"github.com/DATA-DOG/go-sqlmock"
 )
 
 func TestNamedStatusesUsesFallbackForUnknownStatus(t *testing.T) {
@@ -12,6 +15,24 @@ func TestNamedStatusesUsesFallbackForUnknownStatus(t *testing.T) {
 	}
 }
 
+func TestLoadPaymentChannelsUsesPaymentOrderChannelColumn(t *testing.T) {
+	_, mock := setupDashboardDatabase(t)
+	mock.ExpectQuery(regexp.QuoteMeta(
+		`SELECT channel AS name, COALESCE(SUM(amount), 0) AS value FROM "payment_order" WHERE (status = $1 AND payment_status = $2) AND "payment_order"."deleted_at" IS NULL GROUP BY "channel" ORDER BY value DESC`,
+	)).WithArgs(1, 23).WillReturnRows(
+		sqlmock.NewRows([]string{"name", "value"}).AddRow("wechat", int64(1200)),
+	)
+
+	var result []MetricSlice
+	if err := loadPaymentChannels(&result); err != nil {
+		t.Fatal(err)
+	}
+	if len(result) != 1 || result[0].Name != "wechat" || result[0].Value != 1200 {
+		t.Fatalf("payment channels = %#v", result)
+	}
+	assertDashboardMockExpectations(t, mock)
+}
+
 func TestFillRecentDaysIncludesMissingDays(t *testing.T) {
 	now := time.Date(2026, 7, 29, 12, 0, 0, 0, time.Local)
 	got := fillRecentDays([]dailyAggregate{{

backend/api/internal/logic/platform/dashboard/statistics.go

@@ -126,10 +126,7 @@ func GetDashboardOverview() (DashboardStatistics, error) {
 	}
 	result.ProductStatuses = namedStatuses(productStatuses, productStatusNames)
 
-	if err := impl.DBService.Model(&models.PaymentOrder{}).
-		Select("pay_channel AS name, COALESCE(SUM(amount), 0) AS value").
-		Where("status = ? AND payment_status = ?", common.StatusEnable, 23).
-		Group("pay_channel").Order("value DESC").Scan(&result.PaymentChannels).Error; err != nil {
+	if err := loadPaymentChannels(&result.PaymentChannels); err != nil {
 		return DashboardStatistics{}, err
 	}
 
@@ -144,6 +141,13 @@ func GetDashboardOverview() (DashboardStatistics, error) {
 	return result, nil
 }
 
+func loadPaymentChannels(result *[]MetricSlice) error {
+	return impl.DBService.Model(&models.PaymentOrder{}).
+		Select("channel AS name, COALESCE(SUM(amount), 0) AS value").
+		Where("status = ? AND payment_status = ?", common.StatusEnable, 23).
+		Group("channel").Order("value DESC").Scan(result).Error
+}
+
 func namedStatuses(rows []statusAggregate, names map[int]string) []MetricSlice {
 	result := make([]MetricSlice, 0, len(rows))
 	for _, row := range rows {