fix:修复 ROI 多边形未传递及空 ROI 判断逻辑错误导致的离岗告警失效问题。

根本原因：
1. pipeline.py 中调用 register_algorithm 时未传入 roi_polygon，导致算法内 roi_polygon 为空
2. is_point_in_roi 函数在 roi_polygon 为空或点数 <3 时错误返回 True，使系统误判“有人在岗”
3. 因此即使 ROI 内无人，算法也永远不会进入离岗倒计时

修复措施：
- 在注册算法时正确传递 ROI 多边形坐标
- 修正 is_point_in_roi：当 ROI 无效时应返回 False（无人）
- 确保无检测框时仍能触发状态机超时逻辑

inference/pipeline.py

@@ -187,9 +187,9 @@ class InferencePipeline:
                 roi_id,
                 rule_type,
                 {
-                    "threshold_sec": roi_config.get("threshold_sec", 360),
-                    "confirm_sec": roi_config.get("confirm_sec", 30),
-                    "return_sec": roi_config.get("return_sec", 5),
+                    "threshold_sec": roi_config.get("threshold_sec", 300),
+                    "confirm_sec": roi_config.get("confirm_sec", 10),
+                    "return_sec": roi_config.get("return_sec", 30),
                 },
             )
 
@@ -217,22 +217,30 @@ class InferencePipeline:
         else:
             filtered_detections = detections
 
+        roi_detections: Dict[str, List[Dict]] = {}
         for detection in filtered_detections:
             matched_rois = detection.get("matched_rois", [])
             for roi_conf in matched_rois:
                 roi_id = roi_conf["roi_id"]
-                rule_type = roi_conf["rule"]
+                if roi_id not in roi_detections:
+                    roi_detections[roi_id] = []
+                roi_detections[roi_id].append(detection)
 
-                alerts = self.algo_manager.process(
-                    roi_id,
-                    str(camera_id),
-                    rule_type,
-                    [detection],
-                    datetime.now(),
-                )
+        for roi_config in roi_configs:
+            roi_id = roi_config["roi_id"]
+            rule_type = roi_config["rule"]
+            roi_dets = roi_detections.get(roi_id, [])
 
-                for alert in alerts:
-                    self._handle_alert(camera_id, alert, frame, roi_conf)
+            alerts = self.algo_manager.process(
+                roi_id,
+                str(camera_id),
+                rule_type,
+                roi_dets,
+                datetime.now(),
+            )
+
+            for alert in alerts:
+                self._handle_alert(camera_id, alert, frame, roi_config)
 
     def _handle_alert(
         self,