refactor(new-game): extract GameTypeStep and RaceToStep

Refs #30

- Add GameTypeStep.tsx and RaceToStep.tsx under src/components/new-game
- Replace inline components with imports in NewGame.tsx
- Pure refactor; behavior unchanged

src/components/new-game/RaceToStep.tsx

@@ -0,0 +1,111 @@
+import { h } from 'preact';
+import { useEffect, useState } from 'preact/hooks';
+import styles from '../NewGame.module.css';
+
+interface RaceToStepProps {
+  onNext: (raceTo: string | number) => void;
+  onCancel: () => void;
+  initialValue?: string | number;
+  gameType?: string;
+}
+
+export const RaceToStep = ({ onNext, onCancel, initialValue = '', gameType }: RaceToStepProps) => {
+  const quickPicks = [1, 2, 3, 4, 5, 6, 7, 8, 9];
+  const defaultValue = 5;
+  const [raceTo, setRaceTo] = useState<string | number>(initialValue !== '' ? initialValue : defaultValue);
+
+  useEffect(() => {
+    if ((initialValue === '' || initialValue === undefined) && raceTo !== defaultValue) {
+      setRaceTo(defaultValue);
+    }
+    if (initialValue !== '' && initialValue !== undefined && initialValue !== raceTo) {
+      setRaceTo(initialValue);
+    }
+  }, [gameType, initialValue, defaultValue]);
+
+  const handleQuickPick = (value: number) => {
+    const selected = value === 0 ? 'Infinity' : value;
+    setRaceTo(selected);
+    const raceToValue = selected === 'Infinity' ? Infinity : (parseInt(String(selected), 10) || 0);
+    onNext(raceToValue);
+  };
+
+  const handleInputChange = (e: Event) => {
+    const target = e.target as HTMLInputElement;
+    setRaceTo(target.value);
+  };
+
+  const handleSubmit = (e: Event) => {
+    e.preventDefault();
+    const raceToValue = raceTo === 'Infinity' ? Infinity : (parseInt(String(raceTo), 10) || 0);
+    onNext(raceToValue);
+  };
+
+  return (
+    <form className={styles['new-game-form']} onSubmit={handleSubmit} aria-label="Race To auswählen">
+      <div className={styles['screen-title']}>Race To auswählen</div>
+      <div className={styles['progress-indicator']} style={{ marginBottom: 24 }}>
+        <span className={styles['progress-dot']} />
+        <span className={styles['progress-dot']} />
+        <span className={styles['progress-dot']} />
+        <span className={styles['progress-dot']} />
+        <span className={styles['progress-dot'] + ' ' + styles['active']} />
+        <span className={styles['progress-dot']} />
+        <span className={styles['progress-dot']} />
+      </div>
+      <div className={styles['endlos-container']}>
+        <button
+          type="button"
+          className={`${styles['race-to-btn']} ${styles['endlos-btn']} ${raceTo === 'Infinity' ? styles.selected : ''}`}
+          onClick={() => handleQuickPick(0)}
+        >
+          Endlos
+        </button>
+      </div>
+      <div className={styles['race-to-selection']}>
+        {quickPicks.map(value => (
+          <button
+            key={value}
+            type="button"
+            className={`${styles['race-to-btn']} ${parseInt(String(raceTo), 10) === value ? styles.selected : ''}`}
+            onClick={() => handleQuickPick(value)}
+          >
+            {value}
+          </button>
+        ))}
+      </div>
+      <div className={styles['custom-race-to']}>
+        <input
+          type="number"
+          pattern="[0-9]*"
+          value={raceTo}
+          onInput={handleInputChange}
+          className={styles['name-input']}
+          placeholder="manuelle Eingabe"
+        />
+      </div>
+      <div className={styles['arrow-nav']} style={{ display: 'flex', justifyContent: 'space-between', alignItems: 'center', marginTop: 48 }}>
+        <button
+          type="button"
+          className={styles['arrow-btn']}
+          aria-label="Zurück"
+          onClick={onCancel}
+          style={{ fontSize: 48, width: 80, height: 80, borderRadius: '50%', background: '#222', color: '#fff', border: 'none', boxShadow: '0 2px 8px rgba(0,0,0,0.15)', cursor: 'pointer' }}
+        >
+          &#8592;
+        </button>
+        <button
+          type="submit"
+          className={styles['arrow-btn']}
+          aria-label="Weiter"
+          disabled={String(raceTo).trim() === ''}
+          style={{ fontSize: 48, width: 80, height: 80, borderRadius: '50%', background: '#222', color: '#fff', border: 'none', boxShadow: '0 2px 8px rgba(0,0,0,0.15)', cursor: 'pointer', opacity: String(raceTo).trim() === '' ? 0.5 : 1 }}
+        >
+          &#8594;
+        </button>
+      </div>
+    </form>
+  );
+};
+
+