- Add language selector with English, French, and German translations - Fix API key help text to reference Letzshop Support team - Update shop slug input with URL prefix and clearer example - Fix step validation bug by adding db.commit() to all POST endpoints - Translate all form labels, buttons, and messages 🤖 Generated with [Claude Code](https://claude.com/claude-code) Co-Authored-By: Claude Opus 4.5 <noreply@anthropic.com>