fix(mq-starter-redis-stream): 毒消息日志 ERROR 只留摘要，完整堆栈降到 DEBUG

反序列化失败的毒消息按条 ACK 丢弃时，原来整段堆栈打进 ERROR，刷屏淹没有效告警；
改为 ERROR 一行摘要（key + 异常类型 + message），堆栈保留在 DEBUG 供深挖，附护栏单测。

Co-Authored-By: Claude Fable 5 <noreply@anthropic.com>

mq-starter-redis-stream/src/main/java/com/njcn/mq/driver/redis/RedisStreamMqDriver.java

@@ -101,7 +101,10 @@ public class RedisStreamMqDriver implements MqDriver {
             String json = MessageCodec.decodeBody(fields.get(StreamMessageConstant.F_ENC), fields.get(StreamMessageConstant.F_BODY));
             payload = JSON.parseObject(json, sub.getPayloadType());
         } catch (Exception poison) {
-            log.error("[mq-redis] 消息反序列化失败，按毒消息 ACK 丢弃 key={}", fields.get(StreamMessageConstant.F_KEY), poison);
+            String key = fields.get(StreamMessageConstant.F_KEY);
+            log.error("[mq-redis] 消息反序列化失败，按毒消息 ACK 丢弃 key={} type={} message={}",
+                    key, poison.getClass().getSimpleName(), poison.getMessage());
+            log.debug("[mq-redis] 消息反序列化失败堆栈 key={}", key, poison);
             return true; // 毒消息直接 ACK，不卡队列
         }
         MqMessage msg = MqMessage.of(fields.get(StreamMessageConstant.F_KEY), fields.get(StreamMessageConstant.F_TAG), payload);

mq-starter-redis-stream/src/test/java/com/njcn/mq/driver/redis/RedisStreamMqDriverPoisonLogTest.java

@@ -0,0 +1,82 @@
+package com.njcn.mq.driver.redis;
+
+import ch.qos.logback.classic.Level;
+import ch.qos.logback.classic.Logger;
+import ch.qos.logback.classic.spi.ILoggingEvent;
+import ch.qos.logback.core.read.ListAppender;
+import com.njcn.middle.stream.constant.StreamMessageConstant;
+import com.njcn.mq.spi.MqSubscription;
+import org.junit.jupiter.api.AfterEach;
+import org.junit.jupiter.api.BeforeEach;
+import org.junit.jupiter.api.Test;
+import org.slf4j.LoggerFactory;
+
+import java.lang.reflect.Method;
+import java.util.HashMap;
+import java.util.List;
+import java.util.Map;
+import java.util.stream.Collectors;
+
+import static org.junit.jupiter.api.Assertions.*;
+
+class RedisStreamMqDriverPoisonLogTest {
+
+    private final ListAppender<ILoggingEvent> logAppender = new ListAppender<>();
+    private Logger logger;
+    private Level originalLevel;
+
+    @BeforeEach
+    void attachAppender() {
+        logger = (Logger) LoggerFactory.getLogger(RedisStreamMqDriver.class);
+        originalLevel = logger.getLevel();
+        logger.setLevel(Level.DEBUG);
+        logAppender.start();
+        logger.addAppender(logAppender);
+    }
+
+    @AfterEach
+    void detachAppender() {
+        logger.detachAppender(logAppender);
+        logger.setLevel(originalLevel);
+    }
+
+    @Test
+    void poisonMessage_logsErrorSummaryAndDebugStackTrace() throws Exception {
+        RedisStreamMqDriver driver = new RedisStreamMqDriver(null, null, null);
+        MqSubscription sub = MqSubscription.builder()
+                .tag("*")
+                .payloadType(String.class)
+                .listener(msg -> fail("poison message must not reach listener"))
+                .build();
+
+        Map<String, String> fields = new HashMap<>();
+        fields.put(StreamMessageConstant.F_KEY, "poison-1");
+        fields.put(StreamMessageConstant.F_TAG, "");
+        fields.put(StreamMessageConstant.F_ENC, "plain");
+        fields.put(StreamMessageConstant.F_BODY, "new");
+
+        Method dispatch = RedisStreamMqDriver.class.getDeclaredMethod("dispatch", MqSubscription.class, Map.class, int.class);
+        dispatch.setAccessible(true);
+
+        Object ack = dispatch.invoke(driver, sub, fields, 3);
+
+        assertEquals(Boolean.TRUE, ack, "poison message should still be ACKed");
+        List<ILoggingEvent> errors = events(Level.ERROR);
+        assertEquals(1, errors.size());
+        ILoggingEvent error = errors.get(0);
+        assertNull(error.getThrowableProxy(), "ERROR summary should not print a stack trace by default");
+        assertTrue(error.getFormattedMessage().contains("key=poison-1"));
+        assertTrue(error.getFormattedMessage().contains("type=JSONException"));
+        assertTrue(error.getFormattedMessage().contains("message="));
+
+        List<ILoggingEvent> debugs = events(Level.DEBUG);
+        assertEquals(1, debugs.size());
+        assertNotNull(debugs.get(0).getThrowableProxy(), "DEBUG log should retain the stack trace for deep diagnosis");
+    }
+
+    private List<ILoggingEvent> events(Level level) {
+        return logAppender.list.stream()
+                .filter(e -> e.getLevel() == level)
+                .collect(Collectors.toList());
+    }
+}