SimliClient: Unexpected disconnections need robust handling and reconnection strategy

[TalalBazerbachi]

Issue Description

During conversations, the SimliClient occasionally disconnects unexpectedly, but the application continues running without proper error handling or reconnection attempts. This creates a degraded user experience as the avatar stops responding while other components (like OpenAI's Realtime API) continue to function.

Current Behavior

• SimliClient disconnects randomly during active conversations
• No automatic reconnection attempt is made
• No clear error messaging to the user
• Other connected services (like OpenAI Realtime API) continue running, creating an inconsistent state

Expected Behavior

• Proper error handling when disconnection occurs
• Clear notification to the user about connection status
• Automatic reconnection attempts OR graceful shutdown of all connected services
• Option to preserve conversation context during reconnection
• Synchronization between SimliClient and other services (e.g., OpenAI Realtime API)