Drop the default MUI info-blue alert in favour of a neutral panel: theme-driven action.hover background, divider border, secondary text colour and no icon. Reads as a quiet aside instead of a status message.
## Changes
- Removed the "Register here" link from the login page — it misled users into thinking public registration was open.
- Added redirect from /login to /register when no super admin exists (initial setup).
- Added an info alert on the register page clarifying the page is only for initial setup; additional users are invited from team settings. Hidden for the invite-token flow.
- Extracted shared useSuperAdminRedirect hook to dedupe identical fetch/redirect logic across Login and Register.
## Benefits
- Clearer UX: login page no longer suggests self-registration is available post-setup.
- Correct routing on fresh installs: users land on the registration page instead of a login page they can't use.
- Fix tooltip background using non-existent tertiary.background
property by switching to tertiary.main
- Fix Check component text color inheritance for noHighlightText
by adding color: inherit to inner Typography
- Add translation wrapper for validation error messages in PasswordPanel
- Add translation wrapper for validation error messages in ProfilePanel
Replace custom SVG icons and @mui/icons-material with lucide-react for consistent,
lightweight icon management across the application.
## Changes
- Add lucide-react package and remove @mui/icons-material
- Create theme-aware Icon wrapper component with color resolution
- Create iconMap.js for legacy icon name mappings
- Migrate 64 components to use new Icon component
- Remove 74 unused SVG files from assets/icons/
## Benefits
- Consistent icon API across the application
- Smaller bundle size with tree-shakeable imports
- Theme-aware color support via MUI theme paths
- Simpler maintenance with single icon library