- Create ConfigManager for save/load
- Save config to config.json
- Load config on startup
- Persist API key, model, base_url
- Fix config not saved issue
- Use password mode for API Key input (security)
- Fix input box display with proper CSS
- Fix message sending crash with safe handling
- Simplify message processing to avoid async issues
- Add error handling and user feedback
- Improve input field styling
- Remove Neo4j connection retry logic
- Use EmbeddedGraphDB with SQLite backend
- Update welcome message to show SQLite database
- No more Neo4j connection errors