Menu
Postman Doc: https://documenter.getpostman.com/view/20499442/[merchant-collection-id]

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API: List Menus
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    GET /merchant/api/v1/domains/:domain_id/menus

API: Create / Update / Delete Menu
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    POST /merchant/api/v1/domains/:domain_id/menus
    PATCH /merchant/api/v1/domains/:domain_id/menus/:id
    DELETE /merchant/api/v1/domains/:domain_id/menus/:id

Description: Menus represent navigation structures. Items can be nested and reference pages, collections, or external URLs. Changes update CDN cache and navigation rendering.

Request example:
    {
        "name": "Main Menu",
        "items": [ { "title": "Home", "type": "page", "ref": "home" } ]
    }

Response: 200 OK with menu object

Flow Sequence (List):
    # Step 1: Validate Token and Domain
    # Step 2: Fetch menus from CMS/navigation service
    GET /api/navigation/menus?domain_id=:domain_id [Navigation Service]

Flow Sequence (Create/Update/Delete):
    # Step 1: Validate Token and Permissions
    # Step 2: Persist change in Navigation Service
    POST/PATCH/DELETE /api/navigation/menus [Navigation Service]
    # Step 3: Invalidate CDN and cache for navigation
    POST /api/cdn/invalidate [CDN Service]
    POST /api/cache/invalidate [Caching Service]