fix: close business flow regressions

backend/api/internal/logic/gas/delivery_account_test.go

@@ -0,0 +1,31 @@
+package gas
+
+import (
+	"strings"
+	"testing"
+
+	"github.com/DATA-DOG/go-sqlmock"
+	"gorm.io/driver/postgres"
+	"gorm.io/gorm"
+)
+
+func TestScopedDeliveryAccountsQualifiesJoinedStatusColumn(t *testing.T) {
+	connection, _, err := sqlmock.New()
+	if err != nil {
+		t.Fatalf("create SQL mock: %v", err)
+	}
+	t.Cleanup(func() { _ = connection.Close() })
+	databaseService, err := gorm.Open(postgres.New(postgres.Config{Conn: connection}), &gorm.Config{DryRun: true})
+	if err != nil {
+		t.Fatalf("open GORM database: %v", err)
+	}
+
+	statement := scopedDeliveryAccounts(databaseService, 42).
+		Find(&[]struct{}{}).Statement.SQL.String()
+	if !strings.Contains(statement, "delivery_account.status <>") {
+		t.Fatalf("joined query must qualify delivery account status, got: %s", statement)
+	}
+	if strings.Contains(statement, "WHERE status <>") {
+		t.Fatalf("joined query contains ambiguous status column: %s", statement)
+	}
+}