Add auto-connect on system startup functionality

[parfenovvs]

Summary

Implement auto-connect functionality that automatically establishes VPN connection on system startup or network changes.

Features

Auto-Connect Modes

• System startup: Connect when system boots
• Network change: Connect when network interface comes up
• User login: Connect when user logs into desktop session
• Manual trigger: Enable/disable auto-connect per session

Configuration Options

# Enable auto-connect
mbvpn auto-connect enable --server us-east-01
mbvpn auto-connect enable --quick-connect

# Configure auto-connect settings
mbvpn auto-connect set --delay 10s
mbvpn auto-connect set --retry-attempts 3
mbvpn auto-connect set --on-network-change

# Check status
mbvpn auto-connect status

System Integration

Systemd Service (Linux)

[Unit]
Description=MBVPN Auto-Connect
After=network-online.target
Wants=network-online.target

[Service]
Type=oneshot
User=mbvpn
ExecStart=/usr/local/bin/mbvpn auto-connect start
RemainAfterExit=yes

[Install]
WantedBy=multi-user.target

NetworkManager Integration

• Hook into NetworkManager events
• React to network interface changes
• Handle VPN-over-VPN scenarios

Configuration Format

# In ~/.config/mbvpn/config.yml
auto_connect:
  enabled: true
  mode: "quick-connect"  # or specific server
  server: "us-east-01"
  triggers:
    - "system-startup"
    - "network-change"
  delay: "10s"
  retry_attempts: 3
  require_kill_switch: true

Implementation Details

• Create systemd user service files
• Handle privilege escalation for VPN operations
• Implement network change detection
• Add robust error handling and logging
• Consider security implications

Security Considerations

• Run with minimal required privileges
• Secure storage of auto-connect preferences
• Handle failed auto-connect gracefully
• Audit logging for auto-connect events

Priority

🚀 Priority 2 (2-3 weeks)

Labels

• enhancement
• priority-2
• automation
• system-integration