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/beginner/03_clients/4_wallet.md

@@ -0,0 +1,78 @@
+# Wallet Management
+
+Manage your AITBC wallet and tokens.
+
+## Create Wallet
+
+```bash
+aitbc wallet create --name my-wallet
+```
+
+Save the seed phrase securely!
+
+## Import Wallet
+
+```bash
+aitbc wallet import --seed "your seed phrase words"
+```
+
+## View Balance
+
+```bash
+aitbc wallet balance
+```
+
+### Detailed Balance
+
+```bash
+aitbc wallet balance --detailed
+```
+
+Shows:
+- Available balance
+- Pending transactions
+- Locked tokens
+
+## Send Tokens
+
+```bash
+aitbc wallet send --to <ADDRESS> --amount 100
+```
+
+### With Memo
+
+```bash
+aitbc wallet send --to <ADDRESS> --amount 100 --memo "Payment for job"
+```
+
+## Transaction History
+
+```bash
+aitbc wallet history
+```
+
+### Filter
+
+```bash
+aitbc wallet history --type sent
+aitbc wallet history --type received
+```
+
+## Security
+
+### Backup Wallet
+
+```bash
+aitbc wallet export --output wallet.json
+```
+
+### Change Password
+
+```bash
+aitbc wallet change-password
+```
+
+## Next
+
+- [5_pricing-billing.md](./5_pricing-billing.md) — Cost structure and invoices
+- [CLI Guide](../0_getting_started/3_cli.md) — Full CLI reference