- replace specific docker subnets with universal private ranges
- allow RPC from 10.0.0.0/8, 172.16.0.0/12, 192.168.0.0/16
- improve portability across different Docker/network setups
Rename the data directory from palladium-node-data/ to .palladium/
to align with Unix convention for application data directories.
This change makes the directory hidden by default and follows the
standard naming pattern used by blockchain nodes
