[Docs] Add Chinese '用户指南' section and translate user guide to Chinese #476
Description
Background
The English User Guide section has been migrated as per PR #472.
Tasks
- Add a new "用户指南" (User Guide) section in the Chinese documentation part of the website, mirroring the structure of the English version.
- Translate all User Guide documentation (added in add user guide from main repository #472) from English into Chinese and integrate into the new section.
- Ensure that the layout and navigation for the Chinese documentation matches the English version.
Acceptance Criteria
- A dedicated "用户指南" section exists in the Chinese docs.
- All related content is fully translated (not copied) and correctly placed.
- Consistent navigation between EN/CH User Guide sections.