重构板块资金流向页面：三层数据分离（缓存→排序→展示），切换 Tab 清空缓存，排序改为资金/涨幅，新增 error/empty 状态处理

- 缓存数据、排序数据、展示数据三层分离架构
- 切换板块时 queryClient.removeQueries 清空全部缓存
- 排序维度改为 mainNetInflow（资金）和 mainNetInflowPercent（涨幅）
- 卡片展示主力净流入金额 + 占比
- 新增加载骨架屏、请求失败重试、空数据提示等状态
- 资金流向明细条（超大单/大单/中单/小单）

Co-Authored-By: Claude <noreply@anthropic.com>

src/routes/sectors.tsx

@@ -1,29 +1,50 @@
 import { createFileRoute, Link } from "@tanstack/react-router";
 import { useMemo, useState } from "react";
-import { useQuery } from "@tanstack/react-query";
+import { useQuery, useQueryClient } from "@tanstack/react-query";
 import { fetchSectors, type SectorItem, type SectorType } from "@/lib/stock-api";
+import { formatMoney } from "@/lib/utils";
 import { Card, CardContent } from "@/components/ui/card";
-import { ArrowLeft, RefreshCw, ArrowDown, ArrowUp, TrendingUp, TrendingDown } from "lucide-react";
+import {
+  ArrowLeft,
+  RefreshCw,
+  ArrowDown,
+  ArrowUp,
+  TrendingUp,
+  TrendingDown,
+} from "lucide-react";
 
 export const Route = createFileRoute("/sectors")({
   component: SectorsPage,
 });
 
-/* ── Tabs：行业 / 概念 ── */
+/* ============================================================
+   Tab 定义：行业 / 概念
+   ============================================================ */
 const TABS: { key: SectorType; label: string }[] = [
   { key: "industry", label: "行业" },
   { key: "concept", label: "概念" },
 ];
 
-/* ── 排序维度 ── */
-type SortKey = "mainNetInflow" | "changePercent";
+/* ============================================================
+   排序维度
+   ============================================================ */
+type SortKey = "mainNetInflow" | "mainNetInflowPercent";
 
+const SORT_LABEL: Record<SortKey, string> = {
+  mainNetInflow: "资金",
+  mainNetInflowPercent: "涨幅",
+};
+
+/* ============================================================
+   页面组件
+   ============================================================ */
 function SectorsPage() {
+  const queryClient = useQueryClient();
   const [tab, setTab] = useState<SectorType>("industry");
   const [sortKey, setSortKey] = useState<SortKey>("mainNetInflow");
-  const [asc, setAsc] = useState(true);
+  const [asc, setAsc] = useState(false); // 默认降序
 
-  // 行业 / 概念 各自独立的 Query，数据完全隔离，杜绝来回切换时的合并
+  // ── 行业 / 概念各自独立 Query，缓存完全隔离 ──
   const industryQ = useQuery({
     queryKey: ["sectors", "industry"],
     queryFn: ({ signal }) => fetchSectors("industry", signal),
@@ -37,35 +58,57 @@ function SectorsPage() {
     retry: false,
   });
 
-  const { data = [], isLoading, isFetching, refetch } =
-    tab === "industry" ? industryQ : conceptQ;
+  // 当前激活的 tab 查询
+  const activeQuery = tab === "industry" ? industryQ : conceptQ;
+  const { isLoading, isFetching, isError, refetch } = activeQuery;
 
-  // 切换 tab 时强制重新请求，绕过 React Query 缓存和上游反代缓存，确保拿到对应类型的数据
-  const handleTab = (t: SectorType) => {
-    setTab(t);
-    (t === "industry" ? industryQ : conceptQ).refetch();
-  };
+  /* ═══════════════════════════════════════════════════════
+     三层数据分离：缓存 → 排序 → 展示
+     ═══════════════════════════════════════════════════════ */
 
-  const sorted = useMemo(() => {
+  // ① 缓存数据 — React Query 从后端拿到的原始数据
+  const cachedData: SectorItem[] = activeQuery.data ?? [];
+
+  // ② 排序数据 — 按当前排序规则在内存中重排
+  const sortedData = useMemo<SectorItem[]>(() => {
     const dir = asc ? 1 : -1;
-    return [...data].sort((a, b) => {
-      const av = sortKey === "mainNetInflow" ? a.mainNetInflow : a.changePercent ?? -Infinity;
-      const bv = sortKey === "mainNetInflow" ? b.mainNetInflow : b.changePercent ?? -Infinity;
+    return [...cachedData].sort((a, b) => {
+      const av =
+        sortKey === "mainNetInflow"
+          ? a.mainNetInflow
+          : (a.mainNetInflowPercent ?? -Infinity);
+      const bv =
+        sortKey === "mainNetInflow"
+          ? b.mainNetInflow
+          : (b.mainNetInflowPercent ?? -Infinity);
       return (bv - av) * dir;
     });
-  }, [data, sortKey, asc]);
+  }, [cachedData, sortKey, asc]);
 
+  // ③ 展示数据 — 最终渲染的数据集（当前即排序数据，后续可加分页截断）
+  const displayData = sortedData;
+
+  // ── 切换板块：清空全部缓存 + 重新获取 ──
+  const handleTab = (t: SectorType) => {
+    if (t === tab) return;
+    setTab(t);
+    // 移除所有板块缓存，切换后对应的 useQuery 会自动 refetch
+    queryClient.removeQueries({ queryKey: ["sectors"] });
+  };
+
+  // ── 切换排序 ──
   const toggleSort = (key: SortKey) => {
-    if (key === sortKey) setAsc((v) => !v);
-    else {
+    if (key === sortKey) {
+      setAsc((v) => !v);
+    } else {
       setSortKey(key);
-      setAsc(false);
+      setAsc(false); // 切新维度默认降序
     }
   };
 
   return (
     <div className="min-h-screen bg-background">
-      {/* 顶栏 */}
+      {/* ── 顶栏 ── */}
       <header className="sticky top-0 z-10 bg-background/95 backdrop-blur border-b">
         <div className="max-w-5xl mx-auto px-4 h-12 flex items-center justify-between">
           <div className="flex items-center gap-3">
@@ -77,13 +120,16 @@ function SectorsPage() {
           <button
             onClick={() => refetch()}
             className="text-muted-foreground hover:text-foreground transition-colors"
+            title="刷新"
           >
-            <RefreshCw className={`h-4 w-4 ${isFetching ? "animate-spin" : ""}`} />
+            <RefreshCw
+              className={`h-4 w-4 ${isFetching ? "animate-spin" : ""}`}
+            />
           </button>
         </div>
       </header>
 
-      {/* Tab 切换：行业 / 概念 */}
+      {/* ── Tab 切换 ── */}
       <div className="max-w-5xl mx-auto px-4 mt-4">
         <div className="flex gap-1 bg-muted rounded-lg p-1">
           {TABS.map((t) => (
@@ -102,31 +148,65 @@ function SectorsPage() {
         </div>
       </div>
 
-      {/* 排序切换 */}
+      {/* ── 排序切换 + 统计 ── */}
       <div className="max-w-5xl mx-auto px-4 mt-3 flex items-center justify-between">
         <p className="text-[10px] text-muted-foreground">
-          共 {sorted.length} 个板块 · {tab === "industry" ? "行业" : "概念"}
+          共 {cachedData.length} 个板块
+          {isFetching && (
+            <span className="ml-1 text-[10px] text-muted-foreground/60">
+              · 刷新中…
+            </span>
+          )}
         </p>
         <div className="flex gap-0.5 text-xs border rounded-md overflow-hidden">
-          <SortButton label="资金流入" active={sortKey === "mainNetInflow"} asc={asc} onClick={() => toggleSort("mainNetInflow")} />
-          <SortButton label="涨幅%" active={sortKey === "changePercent"} asc={asc} onClick={() => toggleSort("changePercent")} />
+          {(Object.keys(SORT_LABEL) as SortKey[]).map((key) => (
+            <button
+              key={key}
+              onClick={() => toggleSort(key)}
+              className={`px-2.5 py-1 flex items-center gap-0.5 transition-colors ${
+                sortKey === key
+                  ? "bg-primary text-primary-foreground"
+                  : "text-muted-foreground hover:text-foreground"
+              }`}
+            >
+              {SORT_LABEL[key]}
+              {sortKey === key &&
+                (asc ? <ArrowUp className="h-3 w-3" /> : <ArrowDown className="h-3 w-3" />)}
+            </button>
+          ))}
         </div>
       </div>
 
-      {/* 卡片列表 */}
+      {/* ── 内容区 ── */}
       <div className="max-w-5xl mx-auto px-4 mt-3 pb-8">
+        {/* 加载骨架 */}
         {isLoading ? (
           <div className="grid grid-cols-2 sm:grid-cols-3 md:grid-cols-4 lg:grid-cols-5 gap-3">
             {Array.from({ length: 20 }).map((_, i) => (
-              <div key={i} className="animate-pulse rounded-xl bg-muted h-32" />
+              <div key={i} className="animate-pulse rounded-xl bg-muted h-40" />
             ))}
           </div>
-        ) : sorted.length === 0 ? (
-          <div className="text-center py-16 text-sm text-muted-foreground">暂无数据</div>
+        ) : isError ? (
+          /* 请求失败 */
+          <div className="flex flex-col items-center gap-3 py-20">
+            <p className="text-sm text-muted-foreground">数据加载失败</p>
+            <button
+              onClick={() => refetch()}
+              className="text-xs text-primary hover:underline"
+            >
+              点击重试
+            </button>
+          </div>
+        ) : cachedData.length === 0 ? (
+          /* 数据为空 */
+          <div className="text-center py-20 text-sm text-muted-foreground">
+            暂无{tab === "industry" ? "行业" : "概念"}板块数据
+          </div>
         ) : (
+          /* 板块卡片网格 */
           <div className="grid grid-cols-2 sm:grid-cols-3 md:grid-cols-4 lg:grid-cols-5 gap-3">
-            {sorted.map((item) => (
-              <SectorBlock key={item.code} item={item} />
+            {displayData.map((item) => (
+              <SectorCard key={item.code} item={item} />
             ))}
           </div>
         )}
@@ -135,83 +215,27 @@ function SectorsPage() {
   );
 }
 
-function SortButton({
-  label,
-  active,
-  asc,
-  onClick,
-}: {
-  label: string;
-  active: boolean;
-  asc: boolean;
-  onClick: () => void;
-}) {
-  return (
-    <button
-      onClick={onClick}
-      className={`px-2.5 py-1 flex items-center gap-0.5 transition-colors ${
-        active ? "bg-primary text-primary-foreground" : "text-muted-foreground hover:text-foreground"
-      }`}
-    >
-      {label}
-      {active && (asc ? <ArrowUp className="h-3 w-3" /> : <ArrowDown className="h-3 w-3" />)}
-    </button>
-  );
-}
-
-/* ── 数值格式化 ── */
-function formatInflow(val: number | null | undefined): string {
+/* ============================================================
+   数值格式化
+   ============================================================ */
+function fmt(val: number | null | undefined, digits = 2): string {
   if (val == null) return "--";
-  const abs = Math.abs(val);
-  if (abs >= 1e8) return (val / 1e8).toFixed(2) + "亿";
-  if (abs >= 1e4) return (val / 1e4).toFixed(0) + "万";
-  return val.toFixed(0);
+  return val.toFixed(digits);
 }
 
-/* ── 资金流向横条 ── */
-function FundFlowBar({ value, maxAbs }: { value: number | null | undefined; maxAbs: number }) {
-  if (value == null) return null;
-  const pct = maxAbs > 0 ? (value / maxAbs) * 100 : 0;
-  const isPos = value >= 0;
-  return (
-    <div className="flex items-center gap-1">
-      <div className="flex-1 h-1.5 rounded-full bg-muted overflow-hidden">
-        <div
-          className={`h-full rounded-full transition-all ${
-            isPos ? "bg-red-500/60" : "bg-green-500/60"
-          }`}
-          style={{ width: `${Math.min(Math.abs(pct), 100)}%`, marginLeft: isPos ? "50%" : undefined }}
-        />
-      </div>
-      <span
-        className={`text-[10px] font-medium tabular-nums w-14 text-right ${
-          isPos ? "text-red-500" : "text-green-500"
-        }`}
-      >
-        {formatInflow(value)}
-      </span>
-    </div>
-  );
-}
-
-/* ── 单个板块卡片 ── */
-function SectorBlock({ item }: { item: SectorItem }) {
-  const inflow = item.mainNetInflow;
-  const isPositive = inflow >= 0;
+/* ============================================================
+   板块卡片
+   ============================================================ */
+function SectorCard({ item }: { item: SectorItem }) {
   const change = item.changePercent;
-  const maxAbs = Math.max(
-    Math.abs(item.mainNetInflow),
-    Math.abs(item.superLargeInflow ?? 0),
-    Math.abs(item.largeInflow ?? 0),
-    Math.abs(item.mediumInflow ?? 0),
-    Math.abs(item.smallInflow ?? 0),
-    1,
-  );
+  const inflow = item.mainNetInflow;
+  const inflowIsPos = inflow >= 0;
+  const inflowPct = item.mainNetInflowPercent;
 
   return (
     <Card className="rounded-xl hover:shadow-md transition-shadow">
-      <CardContent className="p-3 space-y-2">
-        {/* 板块名称 */}
+      <CardContent className="p-3 space-y-1.5">
+        {/* 板块名称 + 代码 */}
         <div className="flex items-center justify-between gap-1">
           <p className="text-sm font-medium truncate" title={item.name}>
             {item.name}
@@ -231,38 +255,112 @@ function SectorBlock({ item }: { item: SectorItem }) {
                 change >= 0 ? "text-red-500" : "text-green-500"
               }`}
             >
-              {change >= 0 ? <TrendingUp className="h-3 w-3" /> : <TrendingDown className="h-3 w-3" />}
+              {change >= 0 ? (
+                <TrendingUp className="h-3 w-3" />
+              ) : (
+                <TrendingDown className="h-3 w-3" />
+              )}
               {change >= 0 ? "+" : ""}
-              {change.toFixed(2)}%
+              {fmt(change)}%
             </span>
           ) : (
             <span className="text-xs text-muted-foreground">--</span>
           )}
-          <span className="text-[10px] text-muted-foreground">{formatInflow(item.turnover)}</span>
-        </div>
-
-        {/* 主力净流入 + 明细 */}
-        <div className="pt-1.5 border-t border-border/40">
-          <div className="flex items-center justify-between mb-1">
-            <span className="text-[10px] text-muted-foreground">主力净流入</span>
-            <span
-              className={`text-xs font-bold tabular-nums ${
-                isPositive ? "text-red-500" : "text-green-500"
-              }`}
-            >
-              {isPositive ? "+" : ""}
-              {formatInflow(inflow)}
+          <span className="text-[10px] text-muted-foreground">
+            {formatMoney(item.turnover)}
           </span>
         </div>
 
-          <div className="space-y-0.5">
-            <FundFlowBar value={item.superLargeInflow} maxAbs={maxAbs} />
-            <FundFlowBar value={item.largeInflow} maxAbs={maxAbs} />
-            <FundFlowBar value={item.mediumInflow} maxAbs={maxAbs} />
-            <FundFlowBar value={item.smallInflow} maxAbs={maxAbs} />
+        {/* 分割线 */}
+        <hr className="border-border/40" />
+
+        {/* 主力净流入金额 + 占比 */}
+        <div className="flex items-center justify-between">
+          <span className="text-[10px] text-muted-foreground">主力净流入</span>
+          <div className="flex items-center gap-2">
+            <span
+              className={`text-xs font-bold tabular-nums ${
+                inflowIsPos ? "text-red-500" : "text-green-500"
+              }`}
+            >
+              {inflow >= 0 ? "+" : ""}
+              {formatMoney(inflow)}
+            </span>
+            {inflowPct != null && (
+              <span
+                className={`text-[10px] tabular-nums ${
+                  inflowIsPos ? "text-red-500/70" : "text-green-500/70"
+                }`}
+              >
+                {inflow >= 0 ? "+" : ""}
+                {fmt(inflowPct)}%
+              </span>
+            )}
           </div>
         </div>
+
+        {/* 资金流向明细条 */}
+        <FundFlowBreakdown item={item} />
       </CardContent>
     </Card>
   );
 }
+
+/* ============================================================
+   资金流向明细 — 超大单 / 大单 / 中单 / 小单
+   ============================================================ */
+const FLOW_LABELS = [
+  { key: "superLargeInflow" as const, label: "超大单" },
+  { key: "largeInflow" as const, label: "大单" },
+  { key: "mediumInflow" as const, label: "中单" },
+  { key: "smallInflow" as const, label: "小单" },
+];
+
+function FundFlowBreakdown({ item }: { item: SectorItem }) {
+  // 取所有流量的最大绝对值做归一化
+  const maxAbs = Math.max(
+    Math.abs(item.mainNetInflow),
+    Math.abs(item.superLargeInflow ?? 0),
+    Math.abs(item.largeInflow ?? 0),
+    Math.abs(item.mediumInflow ?? 0),
+    Math.abs(item.smallInflow ?? 0),
+    1,
+  );
+
+  return (
+    <div className="space-y-0.5">
+      {FLOW_LABELS.map((f) => {
+        const val = item[f.key];
+        if (val == null) return null;
+        const pct = maxAbs > 0 ? (Math.abs(val) / maxAbs) * 100 : 0;
+        const isPos = val >= 0;
+        return (
+          <div key={f.key} className="flex items-center gap-1.5">
+            <span className="text-[9px] text-muted-foreground w-6 shrink-0 text-right">
+              {f.label}
+            </span>
+            <div className="flex-1 h-1 rounded-full bg-muted overflow-hidden relative">
+              <div
+                className={`h-full rounded-full transition-all ${
+                  isPos ? "bg-red-500/60 ml-1/2" : "bg-green-500/60"
+                }`}
+                style={{
+                  width: `${Math.min(pct, 100)}%`,
+                  marginLeft: isPos ? "50%" : undefined,
+                  marginRight: isPos ? undefined : `${100 - Math.min(pct, 100)}%`,
+                }}
+              />
+            </div>
+            <span
+              className={`text-[9px] font-medium tabular-nums w-14 text-right shrink-0 ${
+                isPos ? "text-red-500" : "text-green-500"
+              }`}
+            >
+              {formatMoney(val)}
+            </span>
+          </div>
+        );
+      })}
+    </div>
+  );
+}