Redesign login UI, add theme toggle, refactor user update

- Redesigned login page with two-panel layout and branding
- Added HexaDistro logo and theme toggle to sidebar/header
- Refactored user update: roles via update endpoint, removed assignRole API/controller
- Extended UpdateUserRequest for username, role, password changes
- UserService.UpdateAsync syncs changes with AuthHex, with rollback
- Stock balances client dedupes by itemId-locationId
- Middleware matcher excludes static assets from auth checks
- Improved localStorage clearing for user context
- Added lucide-react for icons
- Minor UI/code cleanups for consistency and UX

distribution_fe/middleware.ts

@@ -19,5 +19,5 @@ export function middleware(request: NextRequest) {
 }
 
 export const config = {
-  matcher: ['/((?!_next/static|_next/image|favicon.ico).*)'],
+  matcher: ['/((?!_next/static|_next/image|favicon.ico|.*\\.(?:png|jpg|jpeg|gif|svg|webp|ico|woff2?|ttf|otf)$).*)'],
 }