GET /v1/countries

curl -X GET "https://jday-api.jday.workers.dev/v1/countries" \
  -H "Authorization: Bearer jday_live_xxx" \
  -H "Accept: application/json"

{
  "countries": [
    {
      "code": "US",
      "name": "United States",
      "weekend_days": [6, 7],
      "timezone": "America/New_York",
      "region_support": true,
      "regions": [
        { "code": "CA", "name": "California" },
        { "code": "NY", "name": "New York" }
      ],
      "notes": []
    },
    {
      "code": "ZA",
      "name": "South Africa",
      "weekend_days": [6, 7],
      "timezone": "Africa/Johannesburg",
      "region_support": false,
      "regions": [],
      "notes": []
    }
  ]
}