Update Navigation

Add new documentation pages to the docs.json navigation structure.

Instructions

Identify the page: Determine which page needs to be added to navigation
- If not specified, ask the user which file/page to add
- Confirm the file path is correct (relative to docs root)
Determine navigation group: Figure out where in the navigation this belongs
- Ask which navigation group it should go in if not specified
- Common groups align with user journey: "Get started", "Customize", "Deploy", "Settings", etc.
- Read docs.json to see current navigation structure and group names
Read current docs.json:
- Understand the existing navigation structure
- Find the correct group to add to
- Note the format and patterns used