Multilingual Frontend Boards with Auto-Translation

Description: Implement support for hosting multiple languages on user-facing boards and widgets so end users can view and contribute feedback in their preferred language. Problem: Global products today rely on manual translation or separate feedback instances per language, which fragments feedback, increases moderation overhead, and excludes many users. Without integrated multilingual support and automated translation, teams miss cross-language insights and have poor accessibility for non-English users. Benefit: Unified feedback hub across languages reduces fragmentation and manual work. Better inclusivity: users can view and submit feedback in their preferred language. Faster triage: auto-translated submissions let teams act on feedback regardless of language. Consistent experience across roadmap, changelog, widgets, and other feedback features. Key requirements: Customers can set up multiple boards/language variants (e.g., EN, DE, FR). Users see the board in their language automatically (based on locale) or can manually select a language. Feedback submissions are auto-translated between active languages, with a toggle to view original or translated text. All user-facing strings and UI content are fully translatable. Works seamlessly for roadmap, changelog, widget, and all feedback surfaces. Related considerations: Allow administrators to configure which languages are active and translation providers (native or AI-powered), and opt users in/out of auto-translation. Preserve original text and metadata; surface confidence scores for AI translations and provide edit tools for community/localization teams. Maintain mappings so votes, comments, and statuses sync across language variants to avoid duplication. This feature enables a truly global, inclusive feedback experience while removing manual translation overhead.