fix(dashboard): useDashboard 加请求世代校验 — 快速连续切换时间范围时并发 get_summary 响应可能乱序返回导致标签与数据错位；参照 useUsageQuery 的 genRef 模式丢弃过期响应（data/loadStats/error/loading 全部受保护），卸载时使世代失效

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

@@ -1,4 +1,4 @@
-import { useCallback, useEffect, useState } from "react";
+import { useCallback, useEffect, useRef, useState } from "react";
 import { invoke } from "@tauri-apps/api/core";
 import type { SummaryResult } from "../types/dashboard";
 
@@ -23,9 +23,12 @@ 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);
+  // Generation counter: stale responses (superseded range / unmounted) are dropped.
+  const genRef = useRef(0);
 
   const refresh = useCallback(async (force = false) => {
+    const gen = ++genRef.current;
     setLoading(true);
     setError(null);
     const start = performance.now();
@@ -34,16 +37,15 @@ export function useDashboard() {
         range,
         refresh: force,
       });
+      if (genRef.current !== gen) return;
       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) {
+      if (genRef.current !== gen) return;
       const msg = err instanceof Error ? err.message : String(err);
       setError(msg);
     } finally {
-      setLoading(false);
+      if (genRef.current === gen) setLoading(false);
     }
   }, [range]);
 
@@ -51,6 +53,13 @@ export function useDashboard() {
     refresh();
   }, [refresh]);
 
+  // Ignore late responses after unmount.
+  useEffect(() => {
+    return () => {
+      genRef.current += 1;
+    };
+  }, []);
+
   const changeRange = useCallback((next: DashboardRange) => {
     setRange(next);
     try {

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？",