perf: 收敛后端资源与健康检查开销

- 缩小模块扫描范围并显式注册各业务模块自动配置

- 增加可配置线程池、MQ 连接池与消费线程池，降低默认资源占用

- 将 RAG 与分析库中间件探活下沉到健康检查并增加短缓存

- 补齐文档向量库生命周期释放与 SSE 断连清理

easyflow-commons/easyflow-common-audio/src/main/java/tech/easyflow/common/audio/config/AudioThreadPoolProperties.java

@@ -0,0 +1,30 @@
+package tech.easyflow.common.audio.config;
+
+import org.springframework.boot.context.properties.ConfigurationProperties;
+
+/**
+ * 音频模块线程池配置。
+ */
+@ConfigurationProperties(prefix = "easyflow.thread-pool.scheduler")
+public class AudioThreadPoolProperties {
+
+    private int poolSize = 4;
+
+    /**
+     * 获取调度线程池大小。
+     *
+     * @return 调度线程池大小
+     */
+    public int getPoolSize() {
+        return poolSize;
+    }
+
+    /**
+     * 设置调度线程池大小。
+     *
+     * @param poolSize 调度线程池大小
+     */
+    public void setPoolSize(int poolSize) {
+        this.poolSize = poolSize;
+    }
+}

easyflow-commons/easyflow-common-audio/src/main/java/tech/easyflow/common/audio/socket/SchedulingConfig.java

@@ -1,19 +1,38 @@
 package tech.easyflow.common.audio.socket;
 
+import org.springframework.boot.context.properties.EnableConfigurationProperties;
 import org.springframework.context.annotation.Bean;
 import org.springframework.context.annotation.Configuration;
 import org.springframework.scheduling.TaskScheduler;
 import org.springframework.scheduling.annotation.EnableScheduling;
 import org.springframework.scheduling.concurrent.ThreadPoolTaskScheduler;
+import tech.easyflow.common.audio.config.AudioThreadPoolProperties;
 
 @Configuration
 @EnableScheduling
+@EnableConfigurationProperties(AudioThreadPoolProperties.class)
 public class SchedulingConfig {
 
+    private final AudioThreadPoolProperties properties;
+
+    /**
+     * 创建音频调度配置。
+     *
+     * @param properties 音频调度线程池配置
+     */
+    public SchedulingConfig(AudioThreadPoolProperties properties) {
+        this.properties = properties;
+    }
+
+    /**
+     * 创建调度线程池。
+     *
+     * @return 调度线程池
+     */
     @Bean
     public TaskScheduler taskScheduler() {
         ThreadPoolTaskScheduler scheduler = new ThreadPoolTaskScheduler();
-        scheduler.setPoolSize(10);
+        scheduler.setPoolSize(properties.getPoolSize());
         scheduler.setThreadNamePrefix("scheduled-task-");
         scheduler.setDaemon(true);
         scheduler.initialize();