fix(article): return readers to the page they opened the article from

[EagleFox31]

Correction

• Replaces hardcoded /${locale}/posts back link with a reusable, accessible <ArticleBackLink>.
• A persistent client-side navigation context remembers an in-app previous page and uses browser Back (including scroll restoration).
• If opened in a new tab or via a same-site hard navigation, falls back to the validated, same-origin referrer.
• If coming from search engines, social networks or pasted URLs, returns to the same-language homepage instead of leaving Trigenys Insight.
• Rejects external, foreign-language, and self-referential return targets.
• Adds FR/EN unit coverage; leaves Article JSON-LD breadcrumb hierarchy unchanged.

Tests

pnpm test:unit, pnpm lint, TypeScript checks through Quality GitHub workflow.

Manual QA after release

1. FR homepage → article → Retour => homepage
2. Tech & IA / other rubric → article => originating rubric
3. Open external share link/new tab => Trigenys homepage, not external site
4. EN homepage → EN article => English homepage
5. Native browser back behavior remains unchanged.

[vercel]

The latest updates on your projects. Learn more about Vercel for GitHub.

Project	Deployment	Actions	Updated
trigenys-insight	Ready	Preview	Oct 14, 2026 8:20am UTC