- Sort extensions by install order (HebrewLanguage first, then deps)
- Grey out extensions with missing dependencies (show lock icon + "נדרש: X")
- Checkbox selection for batch install with progress indicator
- "בחר הכל" button to select all installable extensions
- Server returns dependencies + install_order in customer API
Co-Authored-By: Claude Opus 4.6 (1M context) <noreply@anthropic.com>