- Projects CRUD API + invite members
- Task recurrence (daily/weekly/monthly) with auto-creation
- Group time zones + GPS locations settings
- i18n fallback fix (no more undefined labels)
- UX: action buttons in one row
- Chat/Calendar: relative API URLs
- DB: task_assignments, projects tables, recurrence column
Co-Authored-By: Claude Opus 4.6 (1M context) <noreply@anthropic.com>