fix(hooks): 添加 AbortController 解决竞态条件问题

在以下 Hook 中添加请求取消逻辑，防止快速切换股票时旧数据覆盖新数据：
- useBasicInfo
- useShareholderData
- useManagementData
- useBranchesData
- useAnnouncementsData
- useDisclosureData
- useStockQuoteData

修复前：stockCode 变化时，旧请求可能后返回，覆盖新数据
修复后：cleanup 时取消旧请求，确保数据一致性

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

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

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

@@ -1,7 +1,7 @@
 // src/views/Company/components/CompanyOverview/hooks/useAnnouncementsData.ts
 // 公告数据 Hook - 用于公司公告 Tab
 
-import { useState, useEffect, useCallback } from "react";
+import { useState, useEffect } from "react";
 import { logger } from "@utils/logger";
 import axios from "@utils/axiosConfig";
 import type { Announcement } from "../types";
@@ -26,33 +26,38 @@ export const useAnnouncementsData = (stockCode?: string): UseAnnouncementsDataRe
   const [loading, setLoading] = useState(false);
   const [error, setError] = useState<string | null>(null);
 
-  const loadData = useCallback(async () => {
+  useEffect(() => {
     if (!stockCode) return;
 
-    setLoading(true);
-    setError(null);
+    const controller = new AbortController();
 
-    try {
-      const { data: result } = await axios.get<ApiResponse<Announcement[]>>(
-        `/api/stock/${stockCode}/announcements?limit=20`
-      );
+    const loadData = async () => {
+      setLoading(true);
+      setError(null);
 
-      if (result.success) {
-        setAnnouncements(result.data);
-      } else {
-        setError("加载公告数据失败");
+      try {
+        const { data: result } = await axios.get<ApiResponse<Announcement[]>>(
+          `/api/stock/${stockCode}/announcements?limit=20`,
+          { signal: controller.signal }
+        );
+
+        if (result.success) {
+          setAnnouncements(result.data);
+        } else {
+          setError("加载公告数据失败");
+        }
+      } catch (err: any) {
+        if (err.name === "CanceledError") return;
+        logger.error("useAnnouncementsData", "loadData", err, { stockCode });
+        setError("网络请求失败");
+      } finally {
+        setLoading(false);
       }
-    } catch (err) {
-      logger.error("useAnnouncementsData", "loadData", err, { stockCode });
-      setError("网络请求失败");
-    } finally {
-      setLoading(false);
-    }
-  }, [stockCode]);
+    };
 
-  useEffect(() => {
     loadData();
-  }, [loadData]);
+    return () => controller.abort();
+  }, [stockCode]);
 
   return { announcements, loading, error };
 };