feat: implement terminal messenger with conversation management
- Add terminal-based messenger client connecting to Verint API endpoint
- Implement colorized output (blue for user input, green for assistant
responses)
- Add readline integration for arrow key navigation through input
history
- Implement conversation persistence with unique history files per
conversation ID
- Add conversation resume feature listing 5 most recent conversations
- Store and auto-load model names per conversation
- Display last 10 message exchanges when resuming conversations
- Log full conversation history (user + assistant messages) with
timestamps
- Simplify codebase by consolidating file operations into reusable
functions
- Fix Sscanf error handling for conversation selection
Features:
- Request/response handling with conversation context via
previous_response_id
- Three file types per conversation: .tmp (readline history), _log.txt
(full conversation), _meta.txt (model name)
- Automatic conversation ID assignment after first message
- Clean exit handling and proper resource cleanup
