wecomcli-manage-doc 是做什么的？
WeCom document management skill. Provides document creation, reading, and editing capabilities, supporting operations on WeCom documents (doc_type=3) and smart sheets (doc_type=10) via docid or document URL. Use cases: (1) Export full document content in Markdown format (asynchronous polling) (2) Create a new document or smart sheet (3) Overwrite document content with Markdown format. Trigger this skill when the user needs to view document content, create a new document, or edit the document body.