v0.3.0

• Add independent openarm_video package and video extra, with passive imports,
  configurable RGB/OpenNI2 sources, timestamped frames, device leases, reconnect
  lifecycle, and explicit software-only simulation.
• Add openarm-runtime video, packaged four-view assets, Safari-compatible finite
  JPEG/PNG requests and raw millimetre-depth download. The vendor SDK and machine
  configuration remain outside the package.
• Fix depth/profile test path comparisons on macOS and let Linux/macOS CI jobs
  complete independently.