feat: 添加数据脱敏过滤器

[mannix-lei]

What

Implemented a data masking filter to protect sensitive user information before sending DOM data to the LLM.

• Added maskSensitiveData utility function in src/dom/index.ts.
• Integrated masking into flatTreeToString to sanitize:
  • HTML attribute values
  • Interactive element text content
  • Plain text nodes
• Supported patterns:
  • Mobile phone numbers (CN)
  • Email addresses
  • ID card numbers (CN)
  • Bank card numbers

Type

• Bug fix
• Feature / Improvement
• Refactor
• Documentation
• Website
• Demo / Testing
• Breaking change

Testing

• Tested in modern browsers
• No console errors
• Types/doc added

Closes #(issue)

Requirements / 要求

• I have read and follow the Code of Conduct and Contributing Guide . / 我已阅读并遵守行为准则。

What

Implemented a data masking filter to protect sensitive user information before sending DOM data to the LLM.

• Added maskSensitiveData utility function in src/dom/index.ts.
• Integrated masking into flatTreeToString to sanitize:
  • HTML attribute values
  • Interactive element text content
  • Plain text nodes
• Supported patterns:
  • Mobile phone numbers (CN)
  • Email addresses
  • ID card numbers (CN)
  • Bank card numbers

Type

• Bug fix
• Feature / Improvement
• Refactor
• Documentation
• Website
• Demo / Testing
• Breaking change

Testing

• Tested in modern browsers
• No console errors
• Types/doc added

Closes #(issue)

Requirements / 要求

• I have read and follow the Code of Conduct and Contributing Guide . / 我已阅读并遵守行为准则。

[CLAassistant]

All committers have signed the CLA.

[gaomeng1900]

Thanks so much for taking the time to contribute! 🙌

I just merged a refactor that moves the DOM module into a separate package (@page-agent/page-controller), which unfortunately will cause some merge conflicts with your PR.

Also, I think it's better to keep data-masking rules out of the core lib and make it configurable.

I'll set up a PR soon to add a configurable data masking API. Once that's in, it'd be super helpful if you could add your rules as an example in the document page.