Port qwen_backend.py pattern to minimax_backend.py as a new
OpenAI-compatible urllib-based backend. Includes:
- BASE_URL defaulting to https://api.minimax.chat/v1
- API_KEY, TIMEOUT_SECONDS, MAX_TOKENS, TEMPERATURE env vars
- ENABLE_THINKING support (MiniMax thinking mode)
- configure_minimax_chat() runtime configurator
- chat_target() and chat_target_messages() functions
- TokenTracker integration and get_token_summary()
- set_target_deployment() support
- Default model: MiniMax/MiniMax-Text-01
Declan Murphy
d224d425f9