Verify that virtual node creation uses the bf-195o design for realistic
geometry placement. The implementation is complete:
- API handler assigns spread positions for nodes created at (0,0,0)
- Registry bridge reassigns positions for nodes at default origin (0,0,1)
- Both use DefaultNodePositions() with grid layout and height diversity
- Positions properly sync to PosX/PosY/PosZ fields in the registry
No code changes required — the implementation was already complete
from prior work on bf-195o and the registry bridge architecture.
Co-Authored-By: Claude <noreply@anthropic.com>
