feat: add localStorage persistence for battle result map

- Initialize `resultMap` from `localStorage` on component mount if data exists.
- Save updated `resultMap` back to `localStorage` when the component unmounts.
- Removed debug console.log statement for cleaner logs.

src/components/BattleTable.tsx

@@ -31,10 +31,20 @@ function BattleTable({
     score: '',
     name: '-',
   }], [list]);
-  const resultMap = useMemo(() => new Map<string, {
-    winer: string,
-    score: number,
-  }>(), []);
+  const resultMap = useMemo(() => {
+    const cache = localStorage.getItem('match-result-map');
+    const cacheEntries: [string, { winer: string, score: number }][] = cache ? Object.entries(JSON.parse(cache)) : [];
+    return new Map<string, {
+      winer: string,
+      score: number,
+    }>(cacheEntries);
+  }, []);
+  useEffect(() => {
+    return () => {
+      const cache = JSON.stringify(Object.fromEntries(resultMap.entries()));
+      localStorage.setItem('match-result-map', cache);
+    }
+  }, [resultMap]);
   const buildMatchGroupTable = useCallback((list: (BasePlayer | null)[]) => {
     const roundNum = list.length - 1;
     const dataList = cloneDeep(list);
@@ -57,7 +67,6 @@ function BattleTable({
       });
       return cloneDeep([left, right]);
     });
-    console.debug(roundTable);
     return roundTable.filter(Boolean);
   }, []);
   const [matchGroupTable, setMatchGroupTable] = useState<ReturnType<typeof buildMatchGroupTable>>([]);