10,000-example SFT mixture for Qwen3.6-27B. Train on mixture_think.jsonl — every
assistant turn carries a think block, which the trainer's preserve-thinking gate requires.
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experiment
90/10-by-examples SFT mixture: 9,000 spec-filtered Table-2 instruction rows + 1,000 difficult-advice documents drawn evenly across all 9 constitution traits
