Update design doc and implementation plan to reflect that the actual Cyrillic mappings use simplified transliterations for backward compatibility with existing Umbraco URLs: - Щ→"Sh" (not "Shch") - Ц→"F" (not "Ts") 🤖 Generated with [Claude Code](https://claude.com/claude-code) Co-Authored-By: Claude <noreply@anthropic.com>