fix: dailyGains 类型精度 + 补 try/catch 与 theme-api 对齐

src/lib/core-stock-api.ts

@@ -4,7 +4,7 @@ import { getApiBaseUrl } from "@/lib/api-client";
 export interface ActiveCoreStock {
   stockCode: string;
   stockName: string;
-  dailyGains: Record<string, number>; // 日期 -> 当日涨幅
+  dailyGains: Record<string, number | null>; // 日期 -> 当日涨幅(可空)
   appearCount: number;
   lastAppear: string | null;
 }
@@ -33,15 +33,25 @@ export interface CoreStockHistoryResponse {
 /** 获取活跃核心股 + 最近10日涨幅矩阵 */
 export async function fetchActiveCoreStocks(): Promise<ActiveCoreStocksResponse> {
   const baseUrl = getApiBaseUrl();
-  const resp = await fetch(`${baseUrl}/api/core-stocks/active`, { method: "GET", cache: "no-store" });
-  if (!resp.ok) return { dates: [], stocks: [] };
-  return resp.json();
+  try {
+    const resp = await fetch(`${baseUrl}/api/core-stocks/active`, { method: "GET", cache: "no-store" });
+    if (!resp.ok) return { dates: [], stocks: [] };
+    return resp.json();
+  } catch (err) {
+    console.error("[core-stock-api] 获取活跃核心股失败:", err);
+    return { dates: [], stocks: [] };
+  }
 }
 
 /** 获取指定交易日核心股(含所属题材) */
 export async function fetchCoreStockHistory(date: string): Promise<CoreStockHistoryResponse | null> {
   const baseUrl = getApiBaseUrl();
-  const resp = await fetch(`${baseUrl}/api/core-stocks/history?date=${date}`, { method: "GET", cache: "no-store" });
-  if (!resp.ok) return null;
-  return resp.json();
+  try {
+    const resp = await fetch(`${baseUrl}/api/core-stocks/history?date=${date}`, { method: "GET", cache: "no-store" });
+    if (!resp.ok) return null;
+    return resp.json();
+  } catch (err) {
+    console.error("[core-stock-api] 获取核心股历史失败:", err);
+    return null;
+  }
 }