修正帧数统计错误，流量统计错误的问题

确认显示帧数策略有效

SHH.CameraSdk/Controllers/CamerasController.cs

@@ -280,4 +280,19 @@ public class CamerasController : ControllerBase
             UseGrayscale = dto.UseGrayscale
         };
     }
+
+    /// <summary>
+    /// [新增] 查询某台设备的当前流控策略
+    /// </summary>
+    [HttpGet("{id}/subscriptions")]
+    public IActionResult GetSubscriptions(long id)
+    {
+        var device = _manager.GetDevice(id);
+        if (device == null) return NotFound();
+
+        // 调用刚才在 FrameController 写的方法
+        var subs = device.Controller.GetCurrentRequirements();
+
+        return Ok(subs);
+    }
 }