🧩 [Task]: dotbit模块迁移到nestjs框架

[T8840]

任务内容 Task Details

1. dotbit模块迁移到nestjs框架
2. API相关调试正常

交付物 (选填) Deliverables

截止期限 (选填) Deadline (optional)

No response

检查清单 Checklist:

• 我已经在右侧选择 effort 标签，标注估计工作量 I have selected the effort label on the right side to estimate the work done.
• 如果需求相对急迫 (2 周内)，请在右侧选择 priority 标签 For urgent requests (within 2 weeks), please select the priority label on the right.
• 我了解没有依照格式提交需求清单，将会被关闭 I understand that improperly formatted product backlog may be closed without explanation.