feat(aiot): 截图请求携带 rtsp_url，支持无 ROI 摄像头按需截图

截图 XADD 到 Redis Stream 时，通过 StreamProxyMapper 查询摄像头的
rtsp_url 并附带到请求中，供 Edge 对无 ROI（无常驻流）的摄像头
临时连接 RTSP 抓帧，解决"先截图才能画 ROI"的鸡生蛋问题。

Co-Authored-By: Claude Opus 4.6 <noreply@anthropic.com>

src/main/java/com/genersoft/iot/vmp/aiot/service/impl/AiScreenshotServiceImpl.java

@@ -3,6 +3,8 @@ package com.genersoft.iot.vmp.aiot.service.impl;
 import com.alibaba.fastjson2.JSON;
 import com.alibaba.fastjson2.JSONObject;
 import com.genersoft.iot.vmp.aiot.service.IAiScreenshotService;
+import com.genersoft.iot.vmp.streamProxy.bean.StreamProxy;
+import com.genersoft.iot.vmp.streamProxy.dao.StreamProxyMapper;
 import lombok.extern.slf4j.Slf4j;
 import org.springframework.beans.factory.annotation.Autowired;
 import org.springframework.beans.factory.annotation.Value;
@@ -42,6 +44,9 @@ public class AiScreenshotServiceImpl implements IAiScreenshotService {
     @Autowired
     private StringRedisTemplate stringRedisTemplate;
 
+    @Autowired
+    private StreamProxyMapper streamProxyMapper;
+
     @Value("${ai.screenshot.callback-url:}")
     private String callbackUrl;
 
@@ -83,6 +88,15 @@ public class AiScreenshotServiceImpl implements IAiScreenshotService {
             fields.put("callback_url", callbackUrl);
         }
 
+        // 查询 rtsp_url 放入请求，供 Edge 对无 ROI 摄像头临时连接截图
+        StreamProxy proxy = streamProxyMapper.selectByCameraCode(cameraCode);
+        if (proxy != null) {
+            String rtspUrl = proxy.getSrcUrl();
+            if (rtspUrl != null && !rtspUrl.isEmpty()) {
+                fields.put("rtsp_url", rtspUrl);
+            }
+        }
+
         try {
             MapRecord<String, String, String> record = MapRecord.create(SNAP_REQUEST_STREAM, fields);
             RecordId recordId = stringRedisTemplate.opsForStream().add(record);