post:
  operationId: listStationCountries
  summary: List countries for Create Station
  description: |
    Returns the full list of countries available for the Country dropdown
    in the Create Station form. No request body is required.
  tags: [masterData]
  responses:
    "200":
      description: Countries returned directly.
      content:
        application/json:
          schema:
            $ref: "../../components.yaml#/components/schemas/ListStationCountriesResponse"
          example:
            items:
              - country_id: "MX"
                country_name: "Mexico"
              - country_id: "US"
                country_name: "United States"
    "400":
      $ref: "../../components.yaml#/components/responses/Failure"