Extends pyisolate process isolation with wheel-based dependency
management, sandbox mode policy, and compatibility fixes validated
against DA3 as the first complex isolated custom node.
- Add sandbox_mode policy (required/disabled) with COMFY_HOST_POLICY_PATH
env override for host security configuration
- Plumb cuda_wheels config and standardize child environment detection
- Add PLY, NPZ, File3D, VIDEO serializers for core save nodes
- Register isolated extension web directories on host side
(sandbox_mode=disabled) for frontend JS widget serving
- Capture ACCEPT_ALL_INPUTS from child node class to prevent
@classproperty trigger on proxy class
- Serialize NodeOutput with ui/expand/block_execution through JSON-RPC
- Cherry-pick V3 python_module metadata fix (e4592190)
- Remove improperly committed cache artifacts
