fix: 修复 TensorRT bindings 问题

- tensorrt_engine.py 添加 pycuda 支持
- CUDA 上下文和流管理
- _is_in_working_hours 支持字符串格式

algorithms.py

@@ -49,14 +49,39 @@ class LeavePostAlgorithm:
     def _is_in_working_hours(self, dt: Optional[datetime] = None) -> bool:
         if not self.working_hours:
             return True
+        
+        import json
+        
+        working_hours = self.working_hours
+        if isinstance(working_hours, str):
+            try:
+                working_hours = json.loads(working_hours)
+            except:
+                return True
+        
+        if not working_hours:
+            return True
+        
         dt = dt or datetime.now()
         current_minutes = dt.hour * 60 + dt.minute
-        for period in self.working_hours:
-            start_minutes = period["start"][0] * 60 + period["start"][1]
-            end_minutes = period["end"][0] * 60 + period["end"][1]
+        for period in working_hours:
+            start_str = period["start"] if isinstance(period, dict) else period
+            end_str = period["end"] if isinstance(period, dict) else period
+            start_minutes = self._parse_time_to_minutes(start_str)
+            end_minutes = self._parse_time_to_minutes(end_str)
             if start_minutes <= current_minutes < end_minutes:
                 return True
         return False
+    
+    def _parse_time_to_minutes(self, time_str: str) -> int:
+        """将时间字符串转换为分钟数"""
+        if isinstance(time_str, int):
+            return time_str
+        try:
+            parts = time_str.split(":")
+            return int(parts[0]) * 60 + int(parts[1])
+        except:
+            return 0
 
     def _check_detection_in_roi(self, detection: Dict, roi_id: str) -> bool:
         matched_rois = detection.get("matched_rois", [])