Complete overhaul from single-admin to multi-role multi-org system:

- Auth: multi-user login from admin_users table with 9 roles
  (superadmin, admin, moderator, org_admin, org_manager,
  tournament_organizer, sponsor, charity, viewer)
- Permissions: granular permission matrix with org-scoping
- RuleEngine: event-driven workflow automation
- Users module: full CRUD for admin user management
- Workflows module: approval queue, automation rules, org requests
- Dashboard: role-aware with scoped data per role
- Sidebar: permission-filtered navigation per role
- Topbar: shows role badge next to username
- Login: supports all user types
Co-Authored-By: Claude Opus 4.6 <noreply@anthropic.com>

- Moved sidebar from left to right for proper RTL layout
- Added full customization panel at /branding with 20 live UI preferences:
  sidebar width, font size, card style, animation speed, accent color,
  table density, toast position, content width, sidebar style, border radius,
  time format, number format, reduce motion, high contrast, color blind modes,
  focus mode, sounds, auto save, page transitions, compact header
- All preferences persist in localStorage and apply instantly
- Added customization.css + customization.js engine
Co-Authored-By: Claude Opus 4.6 <noreply@anthropic.com>