feat: implement v0.2.0 release features - agent-first evolution

✅ v0.2 Release Preparation:
- Update version to 0.2.0 in pyproject.toml
- Create release build script for CLI binaries
- Generate comprehensive release notes

✅ OpenClaw DAO Governance:
- Implement complete on-chain voting system
- Create DAO smart contract with Governor framework
- Add comprehensive CLI commands for DAO operations
- Support for multiple proposal types and voting mechanisms

✅ GPU Acceleration CI:
- Complete GPU benchmark CI workflow
- Comprehensive performance testing suite
- Automated benchmark reports and comparison
- GPU optimization monitoring and alerts

✅ Agent SDK Documentation:
- Complete SDK documentation with examples
- Computing agent and oracle agent examples
- Comprehensive API reference and guides
- Security best practices and deployment guides

✅ Production Security Audit:
- Comprehensive security audit framework
- Detailed security assessment (72.5/100 score)
- Critical issues identification and remediation
- Security roadmap and improvement plan

✅ Mobile Wallet & One-Click Miner:
- Complete mobile wallet architecture design
- One-click miner implementation plan
- Cross-platform integration strategy
- Security and user experience considerations

✅ Documentation Updates:
- Add roadmap badge to README
- Update project status and achievements
- Comprehensive feature documentation
- Production readiness indicators

🚀 Ready for v0.2.0 release with agent-first architecture

docs/advanced/01_blockchain/0_readme.md

@@ -0,0 +1,23 @@
+# Blockchain Node Documentation
+
+Run a blockchain node: validate transactions, produce blocks, maintain the AITBC ledger.
+
+## Reading Order
+
+| # | File | What you learn |
+|---|------|----------------|
+| 1 | [1_quick-start.md](./1_quick-start.md) | Get a node running in 10 minutes |
+| 2 | [2_configuration.md](./2_configuration.md) | Node, RPC, P2P, mempool settings |
+| 3 | [3_operations.md](./3_operations.md) | Start/stop, sync, peers, backups |
+| 4 | [4_consensus.md](./4_consensus.md) | PoA consensus mechanism |
+| 5 | [5_validator.md](./5_validator.md) | Become a validator, duties, rewards |
+| 6 | [6_networking.md](./6_networking.md) | Firewall, NAT, bootstrap nodes |
+| 7 | [7_monitoring.md](./7_monitoring.md) | Prometheus, dashboards, alerts |
+| 8 | [8_troubleshooting.md](./8_troubleshooting.md) | Common issues and fixes |
+| 9 | [9_upgrades.md](./9_upgrades.md) | Version upgrades, rollback |
+| 10 | [10_api-blockchain.md](./10_api-blockchain.md) | RPC and WebSocket API reference |
+
+## Related
+
+- [Installation](../0_getting_started/2_installation.md) — Install all components
+- [CLI Guide](../0_getting_started/3_cli.md) — `aitbc blockchain` commands