Wraps SharedMemoryConnector: CUDA tensor leaves are exported with
torch.multiprocessing reduce_tensor + an inter-process CUDA event, rebuilt and
cloned by the consumer, released by the producer after an ack file appears.
CPU leaves and metadata keep the shm path. Registered as "CudaIpcConnector";
deploy/qwen3_tts_cuda_ipc.yaml selects it for the talker->code2wav hop.
Adoption in the edge profile is measurement-gated (hop latency bench).
Co-Authored-By: Claude Fable 5.1 <noreply@anthropic.com>