feat: 完善后端架构 - 标准化Controller层和Service层

✨ 新功能:
- 创建了完整的Service层架构，包含所有业务实体的Service接口和实现类
- 新增8个标准化的Controller类，支持完整的CRUD操作
- 实现了统一的Request/Response模式和分页查询功能
- 创建了认证服务(AuthService)和令牌服务(TokenService)
- 添加了Redis配置和认证拦截器

🏗️ 架构优化:
- 移除Controller层所有try-catch块，使用全局异常处理机制
- 创建了专门的异常类(AuthException, TokenException, CaptchaException)
- 统一了API返回格式，完善了Result类的方法
- 实现了标准的分页查询和参数校验

📦 新增文件:
- 8个Controller类: Achievement, Comment, CommunityPost, Conversation, CozeApiCall, EmotionAnalysis, Reward, UserStats
- 12个Service接口和对应的实现类
- 标准化的DTO类(Request/Response)
- 异常处理类和拦截器
- 测试用例

🔧 重构优化:
- 重写了AuthController，移除所有业务逻辑到Service层
- 优化了MessageController，使用标准的Request/Response格式
- 更新了全局异常处理器，支持多种异常类型
- 完善了WebConfig配置，添加认证拦截器

📊 代码统计:
- 新增文件: 60+个
- 新增代码行数: 8000+行
- 重构代码行数: 1000+行
- 移除过时接口: 4个

backend-single/src/main/java/com/emotion/config/RedisConfig.java

@@ -0,0 +1,40 @@
+package com.emotion.config;
+
+import org.springframework.context.annotation.Bean;
+import org.springframework.context.annotation.Configuration;
+import org.springframework.data.redis.connection.RedisConnectionFactory;
+import org.springframework.data.redis.core.RedisTemplate;
+import org.springframework.data.redis.serializer.GenericJackson2JsonRedisSerializer;
+import org.springframework.data.redis.serializer.StringRedisSerializer;
+
+/**
+ * Redis配置类
+ * 
+ * @author emotion-museum
+ * @date 2025-07-23
+ */
+@Configuration
+public class RedisConfig {
+
+    /**
+     * 配置RedisTemplate
+     */
+    @Bean
+    public RedisTemplate<String, Object> redisTemplate(RedisConnectionFactory connectionFactory) {
+        RedisTemplate<String, Object> template = new RedisTemplate<>();
+        template.setConnectionFactory(connectionFactory);
+
+        // 使用String序列化器作为key的序列化器
+        StringRedisSerializer stringRedisSerializer = new StringRedisSerializer();
+        template.setKeySerializer(stringRedisSerializer);
+        template.setHashKeySerializer(stringRedisSerializer);
+
+        // 使用JSON序列化器作为value的序列化器
+        GenericJackson2JsonRedisSerializer jsonRedisSerializer = new GenericJackson2JsonRedisSerializer();
+        template.setValueSerializer(jsonRedisSerializer);
+        template.setHashValueSerializer(jsonRedisSerializer);
+
+        template.afterPropertiesSet();
+        return template;
+    }
+}

backend-single/src/main/java/com/emotion/config/WebConfig.java

@@ -1,5 +1,6 @@
 package com.emotion.config;
 
+import com.emotion.interceptor.AuthInterceptor;
 import com.emotion.interceptor.UserContextInterceptor;
 import org.springframework.beans.factory.annotation.Autowired;
 import org.springframework.context.annotation.Configuration;
@@ -17,6 +18,9 @@ import org.springframework.web.servlet.config.annotation.WebMvcConfigurer;
 @Configuration
 public class WebConfig implements WebMvcConfigurer {
 
+    @Autowired
+    private AuthInterceptor authInterceptor;
+
     @Autowired
     private UserContextInterceptor userContextInterceptor;
 
@@ -25,6 +29,25 @@ public class WebConfig implements WebMvcConfigurer {
      */
     @Override
     public void addInterceptors(InterceptorRegistry registry) {
+        // 认证拦截器
+        registry.addInterceptor(authInterceptor)
+                .addPathPatterns("/**")
+                .excludePathPatterns(
+                        "/auth/**",
+                        "/error",
+                        "/favicon.ico",
+                        "/actuator/**",
+                        "/swagger-ui/**",
+                        "/swagger-resources/**",
+                        "/v2/api-docs",
+                        "/v3/api-docs",
+                        "/webjars/**",
+                        "/doc.html",
+                        "/static/**",
+                        "/public/**"
+                );
+
+        // 用户上下文拦截器
         registry.addInterceptor(userContextInterceptor)
                 .addPathPatterns("/**")
                 .excludePathPatterns(