- Groups CRUD in sidebar (create, rename, change color, reorder, delete) - Collapsible group headers with color dots and server count - "Move to Group" context menu on servers - Group dropdown in ServerDialog (add/edit) - 17 i18n keys (EN/RU/ZH) - Search auto-expands groups - Cleaned up old release binaries Co-Authored-By: Claude Opus 4.6 <noreply@anthropic.com>