Muna Server 0.0.23

• Added compute_architecture to heartbeat node status, so the control plane can discover which models have implementations for the node's GPUs.
• Added devices to heartbeat goal descriptors: the node loads the model's engine on the given GPUs, and reloads it when the assignment changes.
• Added policy to heartbeat goal descriptors, the per-model inputs to the local lease-weight solver.
• Added device_ids and build to heartbeat model status.
• Updated device-lease weights to be solved locally every second from live lease demand and each model's policy. Models without a policy are weighted equally.
• Updated the load-time VRAM measurement to cover only the model's assigned GPUs.
• Upgraded muna to 0.0.34.