perf(dashboard): 加载统计去掉对整个返回值的 JSON.stringify（数 MB 大对象在 webview 主线程序列化造成卡顿），loadStats 仅保留耗时 ms，中英文案同步

src/components/dashboard/DashboardPage.tsx

@@ -179,7 +179,7 @@ export function DashboardPage() {
           </div>
           {loadStats && !loading && (
             <span className="hidden text-[10px] text-content-muted sm:inline">
-              {t("loadStats", { ms: loadStats.ms, kb: loadStats.kb })}
+              {t("loadStats", { ms: loadStats.ms })}
             </span>
           )}
         </div>

src/hooks/useDashboard.ts

@@ -23,7 +23,7 @@ export function useDashboard() {
   const [loading, setLoading] = useState(false);
   const [error, setError] = useState<string | null>(null);
   /** Round-trip timing for the last get_summary call (user-perceived lag). */
-  const [loadStats, setLoadStats] = useState<{ ms: number; kb: number } | null>(null);
+  const [loadStats, setLoadStats] = useState<{ ms: number } | null>(null);
 
   const refresh = useCallback(async (force = false) => {
     setLoading(true);
@@ -35,10 +35,7 @@ export function useDashboard() {
         refresh: force,
       });
       setData(result);
-      setLoadStats({
-        ms: Math.round(performance.now() - start),
-        kb: Math.round(JSON.stringify(result).length / 1024),
-      });
+      setLoadStats({ ms: Math.round(performance.now() - start) });
     } catch (err) {
       const msg = err instanceof Error ? err.message : String(err);
       setError(msg);

src/i18n/en.ts

@@ -257,7 +257,7 @@ export const enTranslations: Record<TranslationKey, string> = {
   scanning: "Scanning…",
   refresh: "Refresh",
   refreshing: "Refreshing…",
-  loadStats: "Loaded in {ms} ms · {kb} KB payload",
+  loadStats: "Loaded in {ms} ms",
   refreshed: "Refreshed",
   cancel: "Cancel",
   confirmDeleteTitle: "Delete session forever?",

src/i18n/zh.ts

@@ -249,7 +249,7 @@ export const zhTranslations = {
   scanning: "扫描中…",
   refresh: "刷新",
   refreshing: "刷新中…",
-  loadStats: "加载 {ms} ms · 数据 {kb} KB",
+  loadStats: "加载 {ms} ms",
   refreshed: "已刷新",
   cancel: "取消",
   confirmDeleteTitle: "永久删除会话？",