Update package.json repository fields to npm monorepo standard

[Copilot]

The repository fields in package.json files were using non-standard format without the git+https:// protocol prefix and missing the directory field for the monorepo package.

Changes

• Root package.json: Updated repository URL to use git+https:// prefix
• bnf/package.json: Updated repository URL to git+https:// prefix and added "directory": "bnf" field

This follows the npm official format for monorepo packages:

{
  "repository": {
    "type": "git",
    "url": "git+https://github.com/USTC-KnowledgeComputingLab/ds.git",
    "directory": "bnf"
  }
}

Original prompt

---

This section details on the original issue you should resolve

<issue_title>bnf下面的package.json的repo需要更新</issue_title>
<issue_description>chatgpt说:

对象形式（最推荐，最标准）
{
"repository": {
"type": "git",
"url": "https://github.com/username/repo.git"
}
}

说明：

type: 一般是 "git"

url: 你的仓库地址，推荐写成完整的 .git URL
（也可以写 SSH：git@github.com:username/repo.git）

也支持加 "directory" 用于 monorepo：

{
"repository": {
"type": "git",
"url": "https://github.com/username/repo.git",
"directory": "packages/my-lib"
}
}

看起来需要加个directory</issue_description>

Comments on the Issue (you are @copilot in this section)

• Fixes bnf下面的package.json的repo需要更新 #86

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[Copilot]

Pull request overview

This PR updates the repository field configuration in package.json files to follow npm best practices for monorepo structures. The changes add the git+https:// prefix to repository URLs and include a directory field for the monorepo package, aligning with npm's official documentation for proper repository metadata.

• Updated repository URLs to use the explicit git+https:// protocol prefix
• Added directory field to bnf/package.json to properly indicate its location within the monorepo structure

Reviewed changes

Copilot reviewed 2 out of 2 changed files in this pull request and generated no comments.

File	Description
package.json	Added git+https:// prefix to repository URL for explicit git protocol specification
bnf/package.json	Added git+https:// prefix to repository URL and included directory field to properly identify the package location in the monorepo

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