Phase 1 stub — country article (depth 4)

vitalite-apres-40-ans

Article rendering layer coming in Phase 3 (will reuse the existing article component, parameterized by country + sub_hub).

{
  "route": "c/[country]/[pillar]/[sub_hub]/[slug]",
  "public_url": "/ci/vitalite-masculine/stress-fatigue-homme/vitalite-apres-40-ans",
  "country_code": "ci",
  "pillar_id": "vitalite-masculine",
  "sub_hub": "stress-fatigue-homme",
  "article_slug": "vitalite-apres-40-ans"
}