Professional DOCX document creation, editing, and formatting using OpenXML SDK (.NET). Three pipelines: (A) create new documents from scratch, (B) fill/edit content in existing documents, (C) apply template formatting with XSD validation gate-check. MUST use this skill whenever the user wants to produce, modify, or format a Word document — including when they say "write a report", "draft a proposal", "make a contract", "fill in this form", "reformat to match this template", or any task whose final output is a .docx file. Even if the user doesn't mention "docx" explicitly, if the task implies a printable/formal document, use this skill.

使用 OpenXML SDK (.NET) 进行专业的 DOCX 文档创建、编辑与格式化。包含三个流程：(A) 从零创建新文档，(B) 在现有文档中填充或编辑内容，(C) 应用模板格式并进行 XSD 验证检查。每当用户需要生成、修改或格式化 Word 文档时，必须使用本技能——包括用户说“撰写报告”“起草提案”“制作合同”“填写此表单”“重新格式化以匹配此模板”等所有最终输出为 .docx 文件的任务。即使用户未明确提及“docx”，只要任务隐含需要生成可打印或正式文档，也应使用此技能。