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/04_miners/4_earnings.md

@@ -0,0 +1,66 @@
+# Earnings & Payouts
+Track and manage your mining earnings.
+
+## Earnings Overview
+
+```bash
+aitbc miner earnings
+```
+
+Shows:
+- Total earned
+- Pending balance
+- Last payout
+
+## Earnings Breakdown
+
+| Source | Description |
+|--------|-------------|
+| job_completion | Payment for completed jobs |
+| bonus | Performance bonuses |
+| referral | Referral rewards |
+
+## Payout Schedule
+
+| Plan | Schedule | Minimum |
+|------|----------|---------|
+| Automatic | Daily | 10 AITBC |
+| Manual | On request | 1 AITBC |
+
+## Request Payout
+
+```bash
+aitbc wallet withdraw --amount 100 --address <WALLET_ADDRESS>
+```
+
+## Earnings History
+
+```bash
+aitbc miner earnings --history --days 30
+```
+
+## Performance Metrics
+
+```bash
+aitbc miner stats
+```
+
+Shows:
+- Success rate
+- Average completion time
+- Total jobs completed
+- Earnings per GPU/hour
+
+## Tax Reporting
+
+```bash
+aitbc miner earnings --export --year 2026
+```
+
+Export for tax purposes.
+
+## Next
+
+- [Job Management](./3_job-management.md) — Job management
+- [Monitoring](./6_monitoring.md) - Monitor your miner
+- [GPU Setup](./5_gpu-setup.md) — GPU configuration