권한부여 및 정합성 검사 추가

backend/internal/handler/admin_handler_test.go

@@ -263,7 +263,17 @@ func TestAdminHandler_GetRPUsageDailyChecksTenantPermission(t *testing.T) {
 
 func TestAdminHandler_GetSystemStatsIncludesOverviewMetrics(t *testing.T) {
 	auditRepo := &fakeOverviewAuditRepo{count: 22}
-	h := &AdminHandler{AuditRepo: auditRepo}
+	h := &AdminHandler{
+		AuditRepo: auditRepo,
+		UserProjectionRepo: &fakeAdminUserProjectionRepo{
+			status: domain.UserProjectionStatus{
+				Name:           domain.UserProjectionNameKratos,
+				Status:         domain.UserProjectionStatusReady,
+				Ready:          true,
+				ProjectedUsers: 152,
+			},
+		},
+	}
 	app := fiber.New()
 	app.Get("/api/v1/admin/stats", h.GetSystemStats)
 
@@ -275,8 +285,10 @@ func TestAdminHandler_GetSystemStatsIncludesOverviewMetrics(t *testing.T) {
 	var body map[string]any
 	require.NoError(t, json.NewDecoder(resp.Body).Decode(&body))
 	require.Contains(t, body, "totalTenants")
+	require.Contains(t, body, "totalUsers")
 	require.Contains(t, body, "oidcClients")
 	require.Contains(t, body, "auditEvents24h")
+	require.Equal(t, float64(152), body["totalUsers"])
 	require.Equal(t, float64(22), body["auditEvents24h"])
 	require.Equal(t, time.UTC, auditRepo.since.Location())
 }