Adjust Pan external URL to match June 2026 archive site

[twalsh-ebi]

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Description

This PR would update the code to generate Pan Compara URLs, introducing a special case for linking between Ensembl June 2026 archive sites.

Views affected

This would affect any Pan Compara view with links to Ensembl sister sites.

In the following examples, within a sandbox page, clicking on links for Ensembl sites other than Plants leads to a June 2026 archive site. From the corresponding June 2026 archive page, clicking on such a link leads to the new Ensembl site:

• Pan Compara gene tree of A. thaliana gene AT1G07820 : sandbox vs June 2026 archive
• Pan Compara orthologues for A. thaliana gene AT1G07820 : sandbox vs June 2026 archive
• Pan Compara orthologues for Rice gene RPL5 : sandbox vs June 2026 archive

Possible complications

No complications expected, as changes should only have an effect on Ensembl June 2026 archive sites.

Merge conflicts

None detected.

Related JIRA Issues (EBI developers only)

• N/A