Community Qwen 3.5 Jinja template fixes tool calling

This template is a massive quality-of-life upgrade for the open-weights community, proving that fixing broken local models is often a prompt engineering problem, not a weights problem. It bypasses infinite loop bugs in LM Studio by allowing users to hard-disable thinking for specific turns via invisible tags, natively supports Qwen's XML-based tool calling, dynamically maps 'developer' roles, and is fully multimodal-ready.