- Add server-side translation for menu labels using user's preferred_language - Replace hardcoded sidebar template with dynamic rendering from menu API - Remove hardcoded section/page mappings in favor of menu discovery - Fix locale file structure (move menu keys to top level to avoid double-nesting) - Sidebar now fully driven by /admin/menu-config/render/admin API endpoint Co-Authored-By: Claude Opus 4.5 <noreply@anthropic.com>