fixed all tests

libs/core/config/src/index.ts

@@ -24,3 +24,26 @@ export function createAppConfig<T>(
 ): ConfigManager<T> {
   return new ConfigManager<T>(options);
 }
+
+// Export utilities
+export {
+  SecretValue,
+  secret,
+  isSecret,
+  isSecretEnvVar,
+  COMMON_SECRET_PATTERNS,
+  redactSecrets,
+  wrapSecretEnvVars,
+  secretSchema,
+  secretStringSchema
+} from './utils/secrets';
+
+export {
+  checkRequiredEnvVars,
+  createStrictSchema,
+  formatValidationResult,
+  mergeSchemas,
+  validateConfig,
+  validateCompleteness,
+  type ValidationResult
+} from './utils/validation';