docs: 全面重写出题批题后端对接指南 v2.0

- 新增 generate-smart 接口文档(含 ai_analysis 字段)
- 判断题返回 bool(true/false)格式说明
- 填空题二维数组答案格式详细说明
- 统一响应格式、状态码、错误码
- 5种题型批阅结果真实示例
- curl 调用示例、性能参考
- 基于生产服务器实测数据
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lacerate551
2026-06-30 10:33:55 +08:00
parent 2f7ee02b48
commit e40989eeab

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