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* fix(provider): strip think tags for MiniMax-M3 and other OpenAI-compatible models MiniMax-M3 (and other OpenAI-compatible providers) emit chain-of-thought reasoning directly in the content field wrapped in tags, instead of using a separate reasoning_content field or the legacy CRETIRE_REASONING markers. The existing remove_think logic only handled CRETIRE_* tags, so think blocks leaked into user-visible output even when remove_think was enabled. - Add _ThinkStripState: a stateful filter that correctly handles tags split across streaming chunk boundaries. - Add _strip_think classmethod with regex patterns for both and CRETIRE_* tags. - Wire think_state into invoke_llm_stream so deltas are filtered before reaching the accumulator. - Add remove_think safety net in _StreamAccumulator so the final message from tool-call rounds also gets stripped. - Fix remove_think resolution to use defensive nested .get() so pipelines missing output.misc don't raise AttributeError. * fix(litellmchat): add missing _CLOSE_TAG class attribute on _ThinkStripState * fix(provider): handle think stripping across LiteLLM paths --------- Co-authored-by: WangCham <651122857@qq.com>