feat(data): add Virtues translation columns (_en, _ru, _pt) and populate via DatasetUpdater

[jsboige]

Description

Virtues CSV currently has only _fr columns (title_fr, description_fr, etc.). No _en/_ru/_pt columns exist, so the Virtues PDFs EN/RU/PT render identical French content despite the localization fix (#216).

Tasks

1. Add _en, _ru, _pt columns to Cards/Fallacies/Virtues/Virtues.csv
2. Configure a DatasetUpdater task for Virtues translation
3. Run DatasetUpdater with gpt-4.1 / gpt-4.1-mini to populate translations
4. Validate translations visually

Prerequisites

• feat(translations): Upgrade OpenAI translation pipeline + complete Virtues i18n #183 DONE — SDK migration to official OpenAI v2.10.0 complete
• OpenAI API credentials configured
• DatasetUpdater functional (needs runtime validation)

Related

• feat(translations): Upgrade OpenAI translation pipeline + complete Virtues i18n #183 — SDK migration (merged)
• bug: non-FR PDFs contain French text — translations not applied #216 — Multilingual localization fix (merged)
• epic(publication): text & translation finalization campaign #202 — Epic: text & translation finalization

[jsboige]

Colonnes _en/_ru/_pt déjà ajoutées au CSV Virtues par la campagne PR #238. 218/223 EN, 223/223 PT, ~99% RU. Quasi-complet, restes traités dans le chantier traductions en cours.