fix: include matured affiliate quota in admin overview

backend/internal/repository/affiliate_repo_test.go

@@ -0,0 +1,15 @@
+package repository
+
+import (
+	"strings"
+	"testing"
+
+	"github.com/stretchr/testify/require"
+)
+
+func TestAffiliateUserOverviewSQLIncludesMaturedFrozenQuota(t *testing.T) {
+	query := strings.Join(strings.Fields(affiliateUserOverviewSQL), " ")
+
+	require.Contains(t, query, "ua.aff_quota + COALESCE(matured.matured_frozen_quota, 0)")
+	require.Contains(t, query, "frozen_until <= NOW()")
+}