WS-1687 - Personalised Topic Rail for Adaptive Experience (Data Fetching via NextJS)

[LilyL0u]

Resolves https://bbc.atlassian.net/browse/WS-1687 and https://bbc.atlassian.net/browse/WS-1688

Related to https://bbc.atlassian.net/browse/WS-1685

Summary

• Adds a PersonalisedContent component containing 4 Topics served based on the users header value for x-country. Tracking is enabled as a section view and per-link clicks with click tracking also added to the Topic as subheading link.

• Fetch the country-specific topic feed in the Next.js article handler and inject secondaryColumn.PersonalisedContent when x-country/x-bbc-edge-country matches the Mundo mapping. Slices to 4 summaries.

• Articles are configured to still render if a topic ID is invalid/missing and fails.

• Guard secondary data handling (secondaryData || {}) to avoid errors when secondaryColumn is absent.

• Light tests added/adjusted as appropriate

Chile Topic:

Mexico Topic:

Argentina Topic (x-country header setting shown):

Code changes

• See files changed

Developer Checklist

• UX
  • UX Criteria met (visual UX & screenreader UX)
• Accessibility
  • Accessibility Acceptance Criteria met
  • Accessibility swarm completed
  • Component Health updated
  • P1 accessibility bugs resolved
  • P2/P3 accessibility bugs planned (if not resolved)
• Security
  • Security issues addressed
  • Threat Model updated
• Documentation
  • Docs updated (runbook, READMEs)
• Testing
  • Feature tested on relevant environments
• Comms
  • Relevant parties notified of changes

Testing

• Manual Testing required?
  • Local (Ready-For-Test, Local)
  • Test (Ready-For-Test, Test)
  • Preview (Ready-For-Test, Preview)
  • Live (Ready-For-Test, Live)
• Manual Testing complete?
  • Local
  • Test
  • Preview
  • Live

Additional Testing Steps

1. List the steps required to test this PR.

Useful Links

• Coding Standards
• Repository use guidelines
• Add Links to useful resources related to this PR if applicable.