- Before </think>: tokens sent as delta.reasoning_content
- After </think>: tokens sent as delta.content
- Handles </think> split across token boundaries
- Clean <|im_start|>/<|im_end|>/<think>/</think> from streamed text
- Normal models (no thinking) send all as content as before
- Replaced manual prompt building with GGUF's chat template rendered through minijinja (Rust Jinja2 engine)
- Simplified template: removed multi-step tool detection, reasoning extraction (not needed at template level)
- Added reasoning_content separation: clean_text() returns (reasoning, answer) tuple
- Added reasoning_content field to ResponseMessage and SseDelta for OpenAI-compatible output
- Embedded template at build time via include_str! from templates/chat_template.jinja
- Built-in support for enable_thinking, tool_definitions, tool_calls, tool_response