Qwen Code v0.4.0-nightly.20251209.a6a57233

## What's Changed * fix: prefer UTF-8 encoding for shell output on Windows when detected by @xuewenjie123 in https://github.com/QwenLM/qwen-code/pull/1157 ## New Contributors * @xuewenjie123 made their first contribution in https://github.com/QwenLM/qwen-code/pull/1157 **Full Changelog**: https://github.com/QwenLM/qwen-code/compare/v0.4.0...v0.4.0-nightly.20251209.a6a57233