fix: prevent content overflow on right side of screen

Fixes #23

- Added overflow-x-hidden to body in root layout as defensive measure
- Changed table containers from overflow-hidden to overflow-x-auto
  in admin/players page and RankingsClient (3 tables)
- Added min-w-0 and overflow-hidden to Navigation flex containers
  to prevent links from pushing content off screen
- Added flex-shrink-0 to EuchreCamp wordmark link

src/app/admin/players/page.tsx

@@ -258,7 +258,7 @@ export default function AdminPlayersPage() {
           </div>
 
           {/* Player Table */}
-          <div className="bg-white shadow rounded-lg overflow-hidden">
+          <div className="bg-white shadow rounded-lg overflow-x-auto">
             <table className="min-w-full divide-y divide-gray-200">
               <thead className="bg-gray-50">
                 <tr>