修复板块切换数据合并：禁止 API 响应缓存（反代按 path 忽略 query 导致两个 tab 数据相同）

src/lib/stock-api.ts

@@ -468,7 +468,7 @@ export async function fetchSectors(type: SectorType, signal?: AbortSignal): Prom
   const url = `${baseUrl}/api/sectors?type=${type}`;
 
   try {
-    const resp = await fetch(url, { method: "GET", signal });
+    const resp = await fetch(url, { method: "GET", signal, cache: "no-store" });
     if (!resp.ok) return [];
     const result: SectorResponse = await resp.json();
     return result.data || [];