feat/kanban v2

[katherinehhh]

Note This is a template for submitting a new feature. Use the bug fix template if you're submitting a bug fix pull request by adding template=bug_fix.md to your pull request URL.

Description (需求描述)

支持关系字段作为分组字段

Motivation (需求背景)

Explain the reason for adding or modifying this feature.

Key changes (关键改动）

Provide a technically detailed description of the key changes made.

• Frontend (前端)
• Backend (后端)

Test plan (测试计划)

Suggestions (测试建议)

Provide any suggestions or recommendations for improvements in the testing plan.

Underlying risk (潜在风险)

Identify any potential risks or issues that may arise from the new feature or modification.

Showcase (结果展示）

Including any screenshots of the new feature or modification.

[katherinehhh]

Link T-30

[height[bot]]

This pull request has been linked to 1 task:

• T-30 看板支持关系字段 (unlink task)

💡Tip: Add "Close T-30" to the pull request title or description, to a commit message, or in a comment to mark this task as "Done" when the pull request is merged.