MockPoseEstimationInterface: hardcoded names in add_to_nwbfile prevent multi-camera testing

[h-mayorquin]

Summary

MockPoseEstimationInterface.add_to_nwbfile uses hardcoded names for the device, skeleton, and container, making it impossible to call it multiple times on the same NWBFile to simulate multi-camera setups. This was discovered while trying to use the mock in nwb-video-widgets#16.

Details

get_metadata correctly derives unique names from self.pose_estimation_metadata_key:

device_name = f"Camera{container_name}"
skeleton_name = f"Skeleton{container_name}"

But add_to_nwbfile ignores this and hardcodes:

• Device name: "MockCamera" (line 935)
• Skeleton name: "MockSkeleton" (line 939)
• Container name: "MockPoseEstimation" (line 962)

This means creating two interfaces with different keys and calling add_to_nwbfile on the same NWBFile fails due to duplicate device/skeleton names.

context:

• nwb-video-widgets#16: attempted to use MockPoseEstimationInterface but had to fall back to custom fixtures due to this limitation.