refactor(usage): improve manual cache data repair feedback

src/i18n/ja.ts

@@ -192,6 +192,7 @@ export const jaOverrides = {
   'usage.dataManagement.scanned': 'スキャン件数',
   'usage.dataManagement.repaired': '修復件数',
   'usage.dataManagement.backup': 'バックアップ',
+  'usage.dataManagement.success': '履歴キャッシュデータの処理が完了しました。{repaired} 件を修復しました。',
   'usage.trend.title': 'リクエストと Token の推移',
   'usage.trend.description': 'システムのローカル時刻ごとに集計',
   'usage.token.title': 'Token の内訳',

src/i18n/locales/en.ts

@@ -192,6 +192,7 @@ export const en: Record<MessageKey, string> = {
   'usage.dataManagement.scanned': 'Scanned',
   'usage.dataManagement.repaired': 'Repaired',
   'usage.dataManagement.backup': 'Backup file',
+  'usage.dataManagement.success': 'Historical cache data processing completed. {repaired} records repaired.',
   'usage.trend.title': 'Request and Token Trend',
   'usage.trend.description': 'Grouped by local system hour',
   'usage.token.title': 'Token Breakdown',

src/i18n/locales/zh-CN.ts

@@ -190,6 +190,7 @@ export const zhCN = {
   'usage.dataManagement.scanned': '扫描记录',
   'usage.dataManagement.repaired': '修复记录',
   'usage.dataManagement.backup': '备份文件',
+  'usage.dataManagement.success': '历史缓存数据处理完成，已修复 {repaired} 条记录。',
   'usage.trend.title': '请求与 Token 趋势',
   'usage.trend.description': '按系统本地小时聚合',
   'usage.token.title': 'Token 构成',

src/pages/UsageRecordsPage.tsx

@@ -749,18 +749,23 @@ function UsageDataManagementView() {
           <span>{t('usage.dataManagement.actionDescription')}</span>
         </div>
         <button type="button" className="primary-button" onClick={() => void repair()} disabled={running}>
-          <Wrench size={15} />
           {running ? t('usage.dataManagement.running') : t('usage.dataManagement.run')}
         </button>
       </div>
 
       {error ? <div className="management-alert error">{error}</div> : null}
       {result ? (
-        <div className="usage-data-management-result">
+        <>
+          <div className="management-alert success">
+            <ShieldCheck size={16} aria-hidden="true" />
+            <span>{t('usage.dataManagement.success', { repaired: result.repaired })}</span>
+          </div>
+          <div className="usage-data-management-result">
           <div><span>{t('usage.dataManagement.scanned')}</span><strong>{result.scanned.toLocaleString()}</strong></div>
           <div><span>{t('usage.dataManagement.repaired')}</span><strong>{result.repaired.toLocaleString()}</strong></div>
           <div><span>{t('usage.dataManagement.backup')}</span><strong title={result.backupPath ?? undefined}>{result.backupPath ?? '—'}</strong></div>
-        </div>
+          </div>
+        </>
       ) : null}
     </section>
   );