Add Private Web3 Development SDK with Built-in VPN for Windows

[Copilot]

Overview

This PR transforms the Nextcloud All-in-One project into a comprehensive Private Web3 Development SDK with built-in VPN protection, specifically designed for privacy-focused blockchain application development on Windows.

🚀 New Features

🛡️ Privacy & Security

• WireGuard VPN Container: Built-in VPN protection for all development traffic
• DNS over HTTPS: Privacy-focused DNS resolution using Cloudflare DoH
• Network Isolation: All containers communicate through isolated Docker networks
• Encrypted Traffic: All development activities routed through VPN tunnel

🔧 Web3 Development Environment

• Complete Toolchain: Hardhat, Truffle, Ganache, Foundry pre-installed
• Smart Contract Development: Ready-to-use Solidity development environment
• Local Blockchain: Ganache for testing and development
• JavaScript Libraries: Web3.js, Ethers.js, OpenZeppelin contracts included
• Sample Contracts: Privacy-focused smart contract templates

🪟 Windows SDK Package

• PowerShell Scripts: start-sdk.ps1 with advanced error handling and status checks
• Batch Scripts: start-sdk.bat for simple one-click deployment
• Windows Optimization: Docker volume mapping for Windows file system
• Data Persistence: Local data storage in C:\web3-sdk-data

📁 New Components

Containers

• Containers/vpn/: WireGuard VPN container with automatic key generation
• Containers/web3-dev/: Complete Web3 development environment

Windows SDK

• windows-sdk/: Complete Windows deployment package
  • start-sdk.ps1: Advanced PowerShell deployment script
  • start-sdk.bat: Simple batch file for quick start
  • windows-compose.yaml: Windows-optimized Docker Compose configuration
  • README.md: Comprehensive Windows setup guide

Documentation

• DEVELOPER_GUIDE.md: Complete developer documentation with examples
• .env.example: Environment configuration template
• Installation & Validation Scripts: Automated setup and testing

🔧 Enhanced Configuration

Main Compose File

services:
  web3-vpn:          # WireGuard VPN for privacy
  web3-dev:          # Web3 development environment
  nextcloud-aio-mastercontainer:  # Enhanced with Web3 integration

Privacy Features

• All development traffic encrypted through VPN
• No telemetry or data collection
• Secure key management with runtime generation
• Optional Nextcloud integration for secure file storage

🎯 Usage

Quick Start (Windows)

cd windows-sdk
start-sdk.bat

Advanced Usage (PowerShell)

./start-sdk.ps1 -Action start
./start-sdk.ps1 -Action status
./start-sdk.ps1 -Action stop

Access Points

• VPN Dashboard: https://localhost:8443
• Web3 Development: http://localhost:8545
• Nextcloud (Optional): https://localhost:443

🧪 Testing & Validation

Included Test Scripts

• verify-sdk.sh: Quick validation of all components
• test-sdk.sh: Comprehensive test suite
• validate-sdk.sh: Original validation script

Example Development Workflow

# Connect to development environment
docker exec -it web3-sdk-dev bash

# Test blockchain connection
npx hardhat console --network development

# Deploy sample contract
npx hardhat run scripts/deploy.js

📚 Documentation

Comprehensive Guides

• Windows SDK README: Step-by-step Windows setup
• Developer Guide: Complete development workflow documentation
• Installation Scripts: Automated setup for Linux environments

Sample Code

• Smart Contract Templates: Privacy-focused Solidity contracts
• Hardhat Configuration: Pre-configured for development
• Package.json: All necessary Web3 dependencies

🔒 Security Considerations

Privacy by Design

• All development traffic encrypted
• VPN kill switch protection
• No external data collection
• Secure credential management

Best Practices

• Automatic security updates for containers
• Isolated development environment
• Encrypted local storage options
• Regular security audit capabilities

🎉 Benefits

1. Complete Privacy: Built-in VPN ensures all development is private
2. Windows Optimized: Native Windows support with PowerShell integration
3. Developer Friendly: Pre-configured environment with all necessary tools
4. Production Ready: Secure foundation for Web3 application development
5. Easy Deployment: One-command setup and management

🔧 Technical Details

Container Architecture

Host System
├── VPN Container (WireGuard)
├── Web3 Dev Container (Node.js + Tools)
└── Nextcloud AIO (Optional Storage)

Network Security

• Private Docker network isolation
• VPN-encrypted external communication
• DNS over HTTPS for privacy
• Firewall rules automatically configured

This enhancement maintains full backward compatibility with existing Nextcloud AIO functionality while adding comprehensive Web3 development capabilities with privacy-first design principles.

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