Initial release of kdocs-hot-trend

- Registers the "金山文档" skill for organizing public document and product page information.
- Supports retrieval and summarization of public share pages, template libraries, and product information.
- Excludes any account operations or bypassing of permissions; works only with publicly available pages.
- Extracts key metadata such as title, author, update time, summaries, and links.
- Emphasizes compliance with platform and information security regulations.