List published legal documents (no auth).

GET /legal?format=api
HTTP 200 OK
Allow: GET, HEAD, OPTIONS
Content-Type: application/json
Vary: Accept

{
    "data": [
        {
            "id": 1,
            "slug": "privacy-policy",
            "title": "Privacy Policy",
            "version": "1.0",
            "effective_date": "2026-07-07",
            "is_published": true,
            "updated_at": "2026-07-07T08:55:01.486596+00:00"
        },
        {
            "id": 2,
            "slug": "terms-of-service",
            "title": "Terms of Service",
            "version": "1.0",
            "effective_date": "2026-07-07",
            "is_published": true,
            "updated_at": "2026-07-07T08:55:01.493185+00:00"
        }
    ]
}