docs: remove outdated v0.2.0 release notes

- Delete RELEASE_v0.2.0.md file
- Remove agent-first architecture documentation
- Remove Brother Chain PoA and production setup references
- Remove GPU acceleration, smart contracts, and plugin system notes
- Remove technical improvements and statistics sections

RELEASE_v0.2.0.md

@@ -1,82 +0,0 @@
-# AITBC v0.2.0 Release Notes
-
-## 🎯 Overview
-AITBC v0.2.0 marks the **agent-first evolution** of the AI Trusted Blockchain Computing platform, introducing comprehensive agent ecosystem, production-ready infrastructure, and enhanced GPU acceleration capabilities.
-
-## 🚀 Major Features
-
-### 🤖 Agent-First Architecture
-- **AI Memory System**: Development knowledge base for agents (`ai-memory/`)
-- **Agent CLI Commands**: `agent create`, `agent register`, `agent manage`
-- **OpenClaw DAO Governance**: On-chain voting mechanism
-- **Swarm Intelligence**: Multi-agent coordination protocols
-
-### 🔗 Enhanced Blockchain Infrastructure
-- **Brother Chain PoA**: Live Proof-of-Authority implementation
-- **Production Setup**: Complete systemd/Docker deployment (`SETUP_PRODUCTION.md`)
-- **Multi-language Edge Nodes**: Cross-platform node deployment
-- **Encrypted Keystore**: Secure key management with AES-GCM
-
-### 🎮 GPU Acceleration
-- **GPU Benchmarks**: Performance testing and CI integration
-- **CUDA Optimizations**: Enhanced mining and computation
-- **Benchmark CI**: Automated performance testing
-
-### 📦 Smart Contracts
-- **Rental Agreements**: Decentralized computing resource rental
-- **Escrow Services**: Secure transaction handling
-- **Performance Bonds**: Stake-based service guarantees
-
-### 🔌 Plugin System
-- **Extensions Framework**: Modular plugin architecture
-- **Plugin SDK**: Developer tools for extensions
-- **Community Plugins**: Pre-built utility plugins
-
-## 🛠️ Technical Improvements
-
-### CLI Enhancements
-- **Expanded Command Set**: 50+ new CLI commands
-- **Agent Management**: Complete agent lifecycle management
-- **Production Tools**: Deployment and monitoring utilities
-
-### Security & Performance
-- **Security Audit**: Comprehensive vulnerability assessment
-- **Performance Optimization**: 40% faster transaction processing
-- **Memory Management**: Optimized resource allocation
-
-### Documentation
-- **Agent SDK Documentation**: Complete developer guide
-- **Production Deployment**: Step-by-step setup instructions
-- **API Reference**: Comprehensive API documentation
-
-## 📊 Statistics
-- **Total Commits**: 327
-- **New Features**: 47
-- **Bug Fixes**: 23
-- **Performance Improvements**: 15
-- **Security Enhancements**: 12
-
-## 🔗 Breaking Changes
-- Python minimum version increased to 3.13
-- Agent API endpoints updated (v2)
-- Configuration file format changes
-
-## 🚦 Migration Guide
-1. Update Python to 3.13+
-2. Run `aitbc migrate` for config updates
-3. Update agent scripts to new API
-4. Review plugin compatibility
-
-## 🎯 What's Next
-- Mobile wallet application
-- One-click miner setup
-- Advanced agent orchestration
-- Cross-chain bridge implementation
-
-## 🙏 Acknowledgments
-Special thanks to the AITBC community for contributions, testing, and feedback.
-
----
-*Release Date: March 18, 2026*  
-*License: MIT*  
-*GitHub: https://github.com/oib/AITBC*