重构项目模块结构，更新pom.xml文件，统一模块命名为简洁形式，移除冗余依赖，优化依赖管理。新增子模块支持，提升项目可维护性和可扩展性。

backend/auth/api/pom.xml

@@ -0,0 +1,25 @@
+<?xml version="1.0" encoding="UTF-8"?>
+<project xmlns="http://maven.apache.org/POM/4.0.0"
+         xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"
+         xsi:schemaLocation="http://maven.apache.org/POM/4.0.0 http://maven.apache.org/xsd/maven-4.0.0.xsd">
+  <modelVersion>4.0.0</modelVersion>
+  <parent>
+    <groupId>com.emotionmuseum</groupId>
+    <artifactId>auth</artifactId>
+    <version>1.0.0</version>
+    <relativePath>../pom.xml</relativePath>
+  </parent>
+  <artifactId>auth-api</artifactId>
+  <name>auth-api</name>
+  <dependencies>
+    <dependency>
+      <groupId>org.springframework.cloud</groupId>
+      <artifactId>spring-cloud-starter-openfeign</artifactId>
+    </dependency>
+    <dependency>
+      <groupId>com.emotionmuseum</groupId>
+      <artifactId>common</artifactId>
+      <version>${project.version}</version>
+    </dependency>
+  </dependencies>
+</project>

backend/auth/api/src/main/java/com/emotionmuseum/auth/api/client/AuthClient.java

@@ -0,0 +1,14 @@
+package com.emotionmuseum.auth.api.client;
+
+import com.emotionmuseum.common.result.Result;
+import org.springframework.cloud.openfeign.FeignClient;
+import org.springframework.web.bind.annotation.GetMapping;
+
+@FeignClient(name = "auth")
+public interface AuthClient {
+
+	@GetMapping("/auth/health")
+	Result<Boolean> health();
+}
+
+