Add i18n table links

[hupf]

Closes these issues:
https://gitlab.lindas.admin.ch/bafu/bafu-visualize/visualization-tool/-/issues/106
https://gitlab.lindas.admin.ch/bafu/bafu-visualize/visualize/-/issues/765

This PR extends the links attributes of table diagrams such that a language-specific base URL can be defined (currently it is only possible to define a single base URL across all languages). As implemented, there is no fallback mechanism between languages; if a language has no base URL defined, the column won't be linked. Previous chart configs with a base URL defined, will be migrated, such that this URL will be used for each language.

How to test

• Prior to this change, create a chart diagram for the "Federal Councillors, Party, Canton, Terms" cube, enable the "Enable links" option and define a "Base URL" then choose the "Name" column as source and target column. The name column in the table should now have a link.
• Then with this change, open the previously created chart. The name column should still have the link (also if you switch the language).
• Additionally, with the change, create a new chart and define per language base URLs. The name column should have the language-specific link, depending on the currently active language.

---

• I added a CHANGELOG entry
• I made a self-review of my own code
• I wrote tests for the changes (if applicable)
• I wrote configurator and chart config migrations (if applicable)

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Project	Deployment	Actions	Updated (UTC)
visualization-tool	Ready	Preview, Comment	May 12, 2026 8:49am