Rozsirenie analytiky: login event, prepinac vsetci/prihlaseni, plny nazov krajiny

Pageview beacony uz neposielaju player_id z klienta (nedovereny vstup na
neautentifikovanom endpointe) -- prihlasenie sa eviduje server-side ako
event "login" (aj z registracie), s player_id skutocneho uctu. Admin
dashboard dostal prepinac scope vsetci/prihlaseni, ktory konzistentne
pocita grafy aj tabulky (kazdy login samostatne, navstevnicky den pre
anonymnu navstevnost). PageView.country teraz uklada cely anglicky nazov
krajiny namiesto ISO kodu (potrebna zmena schemy). Pridane sledovanie
klikov na "Pravidla hry" aj z GameList.

Co-Authored-By: Claude Sonnet 5 <noreply@anthropic.com>

frontend/src/pages/GameList.tsx

@@ -2,6 +2,7 @@ import { useState } from 'react';
 import { useNavigate } from 'react-router-dom';
 import { useGameStore } from '../store/gameStore';
 import { emit, socket, setAuthToken } from '../lib/socket';
+import { trackEvent } from '../lib/track';
 import NameModal from '../components/NameModal';
 import RulesModal from '../components/RulesModal';
 
@@ -12,6 +13,11 @@ export default function GameList() {
   const [showCreate, setShowCreate] = useState(false);
   const [showRules, setShowRules] = useState(false);
 
+  const handleShowRules = () => {
+    setShowRules(true);
+    trackEvent('rules_view');
+  };
+
   const handleLogout = () => {
     localStorage.removeItem('bridzik_token');
     localStorage.removeItem('bridzik_player');
@@ -85,7 +91,7 @@ export default function GameList() {
       </button>
 
       <button
-        onClick={() => setShowRules(true)}
+        onClick={handleShowRules}
         className="w-full py-2 rounded-xl border border-gold/20 text-sm text-green-score hover:border-gold/50 transition-colors"
       >
         Pravidlá hry