Qwen3.6 preserve_thinking in oMLX

<!-- SC_OFF --><div class="md"><p>I build context/harness optimization tooling, so provider-side serialization quirks actually matter to me. If you're optimizing over prompts, you

<!-- SC_OFF --><div class="md"><blockquote> <p>Wait, I need to be careful about the &quot;no_think&quot; tag in the system prompt. The system prompt says <code>/no_think</code>.

<table> <tr><td> <a href="https://www.reddit.com/r/LocalLLaMA/comments/1tbzr64/qwen36_just_stops/"> <img alt="qwen3.6 just stops"

<!-- SC_OFF --><div class="md"><p>Hi,</p> <p>I taught Computer Science for 30 years in a French School of Electrical Engineering, Computer Science Department.</p> <p>I recently

<!-- SC_OFF --><div class="md"><p>Hey folks, just a heads-up for anyone running Qwen3.6 through <code>llama-server</code>. I ran into an issue where the

<table> <tr><td> <a href="https://www.reddit.com/r/singularity/comments/1s7rcwr/qwen35_omni_qwens_latest_generation_of_fully/"> <img alt="Qwen3.5 Omni - Qwen’s latest generation

<!-- SC_OFF --><div class="md"><h1>Problem</h1> <p><code>llama-server</code> only handles <code>reasoning_effort: &quot;none&quot;</code> (disables thinking). All other values

<table> <tr><td> <a href="https://www.reddit.com/r/LocalLLaMA/comments/1t45m77/qwen_36_27b_looping_problem/"> <img alt="qwen 3.6 27B looping problem"