perf(hooks): 使用 useRef 缓存加载状态，避免 Tab 切换重复请求

- 使用 useRef 替代 useState 跟踪 hasLoaded 状态
- Tab 切换回来时保持数据缓存，不重新发起请求
- stockCode 变化时重置加载状态，确保新股票正常加载
- useAnnouncementsData 支持 refreshKey 强制刷新

🤖 Generated with [Claude Code](https://claude.com/claude-code)

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

src/views/Company/components/CompanyOverview/hooks/useDisclosureData.ts

@@ -1,7 +1,7 @@
 // src/views/Company/components/CompanyOverview/hooks/useDisclosureData.ts
 // 披露日程数据 Hook - 用于工商信息 Tab
 
-import { useState, useEffect } from "react";
+import { useState, useEffect, useRef } from "react";
 import { logger } from "@utils/logger";
 import axios from "@utils/axiosConfig";
 import type { DisclosureSchedule } from "../types";
@@ -36,7 +36,10 @@ export const useDisclosureData = (options: UseDisclosureDataOptions): UseDisclos
   const [disclosureSchedule, setDisclosureSchedule] = useState<DisclosureSchedule[]>([]);
   const [loading, setLoading] = useState(true);
   const [error, setError] = useState<string | null>(null);
-  const [hasLoaded, setHasLoaded] = useState(false);
+  // 使用 ref 跟踪是否已加载，避免 Tab 切换时重复请求
+  const hasLoadedRef = useRef(false);
+  // 记录上次加载的 stockCode，stockCode 变化时需要重新加载
+  const lastStockCodeRef = useRef<string | undefined>(undefined);
 
   useEffect(() => {
     // 只有 enabled 且有 stockCode 时才请求
@@ -45,6 +48,18 @@ export const useDisclosureData = (options: UseDisclosureDataOptions): UseDisclos
       return;
     }
 
+    // stockCode 变化时重置加载状态
+    if (lastStockCodeRef.current !== stockCode) {
+      hasLoadedRef.current = false;
+      lastStockCodeRef.current = stockCode;
+    }
+
+    // 如果已经加载过数据，不再重新请求（Tab 切换回来时保持缓存）
+    if (hasLoadedRef.current) {
+      setLoading(false);
+      return;
+    }
+
     const controller = new AbortController();
 
     const loadData = async () => {
@@ -63,7 +78,7 @@ export const useDisclosureData = (options: UseDisclosureDataOptions): UseDisclos
           setError("加载披露日程数据失败");
         }
         setLoading(false);
-        setHasLoaded(true);
+        hasLoadedRef.current = true;
       } catch (err: any) {
         // 请求被取消时，不更新任何状态
         if (err.name === "CanceledError") {
@@ -72,7 +87,7 @@ export const useDisclosureData = (options: UseDisclosureDataOptions): UseDisclos
         logger.error("useDisclosureData", "loadData", err, { stockCode });
         setError("网络请求失败");
         setLoading(false);
-        setHasLoaded(true);
+        hasLoadedRef.current = true;
       }
     };
 
@@ -80,7 +95,7 @@ export const useDisclosureData = (options: UseDisclosureDataOptions): UseDisclos
     return () => controller.abort();
   }, [stockCode, enabled]);
 
-  const isLoading = loading || (enabled && !hasLoaded && !error);
+  const isLoading = loading || (enabled && !hasLoadedRef.current && !error);
 
   return { disclosureSchedule, loading: isLoading, error };
 };