修复 API 500 响应泄露内部错误细节

src/lib/api.test.ts

@@ -98,7 +98,7 @@ describe("apiHandler", () => {
     const res = await handler(req, mockCtx);
     const data = await res.json();
     expect(res.status).toBe(500);
-    expect(data.error).toBe("操作失败 [Error: unexpected]");
+    expect(data.error).toBe("操作失败，请稍后重试");
     consoleSpy.mockRestore();
   });
 });

src/lib/api.ts

@@ -60,9 +60,11 @@ export function apiHandler(handler: RouteHandler): RouteHandler {
           { status: 409 },
         );
       }
-      const detail = e instanceof Error ? `${e.name}: ${e.message}` : String(e);
       console.error(`[API ${req.method} ${req.nextUrl.pathname}]`, e);
-      return NextResponse.json({ error: `操作失败 [${detail}]` }, { status: 500 });
+      return NextResponse.json(
+        { error: "操作失败，请稍后重试" },
+        { status: 500 },
+      );
     }
   };
 }