fix(CompanyOverview): 修复 React Strict Mode 下骨架屏闪现问题

- 移除所有 hooks 中的 finally 块，避免请求取消时错误更新状态
- 添加 hasLoaded 状态追踪首次加载完成
- CanceledError 时直接返回，不更新任何状态
- 使用派生 isLoading 状态确保骨架屏正确显示

修复的 hooks:
- useShareholderData.ts
- useManagementData.ts
- useAnnouncementsData.ts
- useDisclosureData.ts
- useBasicInfo.ts

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

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

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

@@ -34,12 +34,16 @@ export const useDisclosureData = (options: UseDisclosureDataOptions): UseDisclos
   const { stockCode, enabled = true } = options;
 
   const [disclosureSchedule, setDisclosureSchedule] = useState<DisclosureSchedule[]>([]);
-  const [loading, setLoading] = useState(false);
+  const [loading, setLoading] = useState(true);
   const [error, setError] = useState<string | null>(null);
+  const [hasLoaded, setHasLoaded] = useState(false);
 
   useEffect(() => {
     // 只有 enabled 且有 stockCode 时才请求
-    if (!enabled || !stockCode) return;
+    if (!enabled || !stockCode) {
+      setLoading(false);
+      return;
+    }
 
     const controller = new AbortController();
 
@@ -58,12 +62,17 @@ export const useDisclosureData = (options: UseDisclosureDataOptions): UseDisclos
         } else {
           setError("加载披露日程数据失败");
         }
+        setLoading(false);
+        setHasLoaded(true);
       } catch (err: any) {
-        if (err.name === "CanceledError") return;
+        // 请求被取消时，不更新任何状态
+        if (err.name === "CanceledError") {
+          return;
+        }
         logger.error("useDisclosureData", "loadData", err, { stockCode });
         setError("网络请求失败");
-      } finally {
         setLoading(false);
+        setHasLoaded(true);
       }
     };
 
@@ -71,5 +80,7 @@ export const useDisclosureData = (options: UseDisclosureDataOptions): UseDisclos
     return () => controller.abort();
   }, [stockCode, enabled]);
 
-  return { disclosureSchedule, loading, error };
+  const isLoading = loading || (enabled && !hasLoaded && !error);
+
+  return { disclosureSchedule, loading: isLoading, error };
 };