同步当前架构和数据 (2026-06-11)

- 训练脚本: train_v2.py + llm_chat_improved.py
- API生成: api_correction.py
- 高温多样化: regenerate_all_high_temp.py
- 每日数据生成: daily_data_gen.py
- 数据: xiaoli_train_v2.json(40776条) + vocab_v2.json
- 蒸馏问题: exam_distill_questions等
- Web服务: web_server.py + chat.html
- 新增 .gitignore 排除旧版文件

xiaoli_valid_v2.json

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+version https://git-lfs.github.com/spec/v1
+oid sha256:c445541e8aaefe41ef3223ec0f83988acf5e282a52f34d13f8560e551615a2d2
+size 327442