pub fn classify(prompt: &str) -> &'static strExpand description
Classify a prompt for the legacy DeepSeek candidate pair.
Uses a simple scoring system:
- Strong complex keyword: +3
- Medium complex keyword: +1
- Simple keyword: -1
- Prompt length > 500 chars: +2, > 200 chars: +1
- Contains code fence or backtick: +1
- Contains a file path: +1
- Multi-line (> 5 newlines): +1
Total ≥ 2 → PRO_MODEL, else → FLASH_MODEL.