fix: 允许匿名兑换客户代登录授权码

auth/src/test/java/com/baiyue/auth/config/AuthSecurityConfigTest.java

@@ -0,0 +1,15 @@
+package com.baiyue.auth.config;
+
+import org.junit.jupiter.api.Test;
+
+import java.util.Arrays;
+
+import static org.junit.jupiter.api.Assertions.assertTrue;
+
+class AuthSecurityConfigTest {
+    @Test
+    void permitsAnonymousImpersonationCodeExchange() {
+        assertTrue(Arrays.asList(AuthSecurityConfig.PUBLIC_AUTH_ENDPOINTS)
+            .contains("/api/auth/impersonations/exchange"));
+    }
+}