docs: update device status stream metrics

docs/en/source/camera_devices/4_application_guide/topics.md

@@ -105,7 +105,7 @@ The following topics publish stream-to-stream extrinsics with type `orbbec_camer
 
 *   `/camera/device_status`
     *   Reports the current camera device status. The message type is `orbbec_camera_msgs/msg/DeviceStatus`.
-    *   The message contains the device online status and connection type, as well as current, average, minimum, and maximum FPS and latency for the `color`, `depth`, `left_color`, `right_color`, `left_ir`, and `right_ir` streams.
+    *   The message contains the device online status, connection type, and calibration status, plus a `streams` array. Each entry includes `topic_name`, `has_subscribers`, `publish_rate_hz`, and `delay_ms_avg`; the status is published at 1 Hz.
 
 *   `/camera/depth_filters/status`
     *   Reports the structured status of the depth sensor's post-processing filters. The type is `orbbec_camera_msgs/msg/DepthFiltersStatus`.

docs/en/source/camera_devices/7_developer_guide/migration_guide.md

@@ -156,7 +156,7 @@ With an open-source SDK, developers can directly submit issues and pull requests
 
 | **Topic**             | **main** | **v2-main** | **Description**                                              |
 | --------------------- | -------- | ----------- | ------------------------------------------------------------ |
-| /camera/device_status | -        | Added       | Publishes device status (frame rate delay, device connection status, etc.) |
+| /camera/device_status | -        | Added       | Publishes device status; fixed per-stream FPS/delay fields are replaced by `DeviceStatus.streams[]` with topic, subscriber, publish-rate, and average-delay metrics |
 
 ### **Service Differences**