v0.9.4 - Connectivity, UI

• External API endpoints
• Streamable HTTP MCP A0 server
• A2A (Agent to Agent) protocol - server+client
• New notifications system
• New local terminal interface for stability
• Rate limiter integration to models
• Delayed memory recall
• Smarter autoscrolling in UI
• Action buttons in messages
• Multiple API keys support
• Tunnel URL QR code
• Download streaming
• Internal fixes and optimizations