refactor: remove toast notifications from game detail

- Delete Toast component and styles
- Remove all toast usage from GameDetail

Simplifies UX and eliminates transient notifications.

Refs #26

src/components/GameDetail.tsx

@@ -1,7 +1,6 @@
 import { h } from 'preact';
 import { useState } from 'preact/hooks';
 import styles from './GameDetail.module.css';
-import Toast from './Toast';
 import type { Game, EndlosGame } from '../types/game';
 
 interface GameDetailProps {
@@ -18,23 +17,11 @@ interface GameDetailProps {
  * Game detail view for a single game.
  */
 const GameDetail = ({ game, onFinishGame, onUpdateScore, onUpdateGame, onUndo, onForfeit, onBack }: GameDetailProps) => {
-  const [toast, setToast] = useState<{ show: boolean; message: string; type: 'success' | 'error' | 'info' }>({ 
-    show: false, 
-    message: '', 
-    type: 'info' 
-  });
-
   if (!game) return null;
 
-  const showToast = (message: string, type: 'success' | 'error' | 'info' = 'info') => {
-    setToast({ show: true, message, type });
-  };
-
   const handleScoreUpdate = (playerIndex: number, change: number) => {
     onUpdateScore(playerIndex, change);
-    const playerName = [game.player1, game.player2, game.player3][playerIndex - 1];
-    const action = change > 0 ? 'Punkt hinzugefügt' : 'Punkt abgezogen';
-    showToast(`${action} für ${playerName}`, 'success');
+    // Silent update; toast notifications removed
   };
 
 
@@ -108,7 +95,6 @@ const GameDetail = ({ game, onFinishGame, onUpdateScore, onUpdateGame, onUndo, o
             className="btn btn--secondary" 
             onClick={() => {
               onUndo();
-              showToast('Letzte Aktion rückgängig gemacht', 'info');
             }}
             aria-label="Rückgängig"
           >
@@ -117,12 +103,6 @@ const GameDetail = ({ game, onFinishGame, onUpdateScore, onUpdateGame, onUndo, o
         )}
         <button className="btn" disabled={isCompleted} onClick={onFinishGame} aria-label={isCompleted ? 'Abgeschlossen' : 'Spiel beenden'}>{isCompleted ? 'Abgeschlossen' : 'Spiel beenden'}</button>
       </div>
-      <Toast 
-        show={toast.show} 
-        message={toast.message} 
-        type={toast.type} 
-        onClose={() => setToast({ show: false, message: '', type: 'info' })} 
-      />
     </div>
   );
 };