- Add MESSAGE transaction type to router.py valid_types
- Add MESSAGE handling to state_transition.py (value=0, fee-only)
- Add GasType.MESSAGE to gas schedules
- Re-enable state root computation in poa.py
- Change SQLite journal_mode to WAL for corruption prevention
- Add chattr +C to setup.sh for Btrfs CoW prevention
- Bump version from 1.0 to 2.0 in OPENCLAW_AITBC_MASTERY_PLAN.md
- Add comprehensive workflow integration section with links to multi-node setup, operations, marketplace, and production workflows
- Document multi-chain runtime support (ait-testnet, ait-devnet) with shared database and chain-aware RPC
- Document hub/follower topology with island management and P2P network architecture
- Add new